CN117015049A - Method and user equipment for physical channel reception and physical channel transmission - Google Patents

Method and user equipment for physical channel reception and physical channel transmission Download PDF

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Publication number
CN117015049A
CN117015049A CN202310490691.7A CN202310490691A CN117015049A CN 117015049 A CN117015049 A CN 117015049A CN 202310490691 A CN202310490691 A CN 202310490691A CN 117015049 A CN117015049 A CN 117015049A
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CN
China
Prior art keywords
tci
transmission configuration
field
configuration indicator
control information
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CN202310490691.7A
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Chinese (zh)
Inventor
罗立中
李建民
陈仁贤
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Acer Inc
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Acer Inc
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Publication date
Priority claimed from US18/302,797 external-priority patent/US20230362930A1/en
Application filed by Acer Inc filed Critical Acer Inc
Publication of CN117015049A publication Critical patent/CN117015049A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • H04L1/0063—Single parity check
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method and user equipment for physical downlink shared channel reception and physical uplink control channel transmission are provided. The method comprises the following steps: receiving first downlink control information; obtaining a code point from the first field in response to the first field being included in the first downlink control information, wherein the code point is associated with a selection of the at least one transmission configuration indicator state; and receiving a physical downlink shared channel according to the first downlink control information.

Description

Method and user equipment for physical channel reception and physical channel transmission
Technical Field
The present disclosure relates to wireless communication technology, and more particularly, to a method and User Equipment (UE) for physical downlink shared channel (physical downlink shared channel; PDSCH) reception and physical uplink control channel (physical uplink control channel; PUCCH) transmission.
Background
Fig. 1 shows a schematic diagram of a unified transmission configuration indicator (transmission configuration indicator; TCI) framework on a single transmission reception point (transmission reception point; TRP) use case. If the UE is served by a single TRP (single-TRP; S-TRP), the same Downlink (DL) beam or Uplink (UL) beam (i.e., the beam to which TCI state #x is applied) may be used for a channel, signal or component carrier (component carrier; CC) between the TRP and the UE so that signaling overhead between the TRP and the UE may be reduced. The beam between the TRP and the UE may be updated by a beam update mechanism or a fast beam update mechanism based on downlink control information (downlink control information; DCI).
FIG. 2 shows a schematic diagram of a unified TCI framework over a multi-TRP (M-TRP) use case. The 3GPP 5G New Radio (NR) release 18 specifies an extension of the unified TCI framework in release 17 for indicating multiple DL or ULTCI states. If the UE is served by an M-TRP including a first TRP and a second TRP as shown in fig. 2, the same first DL beam or first UL beam (i.e., the beam to which TCI state #x is applied) may be used for a first subset of channels, signals, or CCs between the first TRP and the UE. Similarly, the same second DL beam or second UL beam (i.e., the beam to which TCI state #y is applied) may be used for a second subset of channels, signals or CCs between the second TRP and the UE.
Although a UE may be served by two or more beams from different TRPs, for a UE the S-TRP and M-TRP use cases of PDSCH/PUCCH scheduling should be considered according to, for example, scheduling flexibility and/or channel quality.
Disclosure of Invention
The present disclosure is directed to a method and UE for PDSCH reception and PUCCH transmission. The present disclosure provides a way to perform PDSCH/PUCCH scheduling for UEs served by M-TRP or S-TRP.
The present disclosure is directed to a method for physical downlink shared channel reception, suitable for a communication device, wherein the method comprises: receiving first downlink control information; obtaining a code point from the first field in response to the first field being included in the first downlink control information, wherein the code point is associated with a selection of the at least one transmission configuration indicator state; and receiving a physical downlink shared channel according to the first downlink control information.
The present disclosure is directed to a method for physical uplink control channel transmission, suitable for a communication device, wherein the method comprises: receiving first downlink control information; obtaining a code point from the first field in response to the first field being included in the first downlink control information, wherein the code point is associated with a selection of the at least one transmission configuration indicator state; and transmitting a physical uplink control channel according to the first downlink control information.
The present disclosure is directed to a user equipment for physical downlink shared channel reception, comprising: a transceiver; and a processor. The processor is coupled to the transceiver, wherein the processor is configured to: receiving first downlink control information via a transceiver; obtaining a code point from the first field in response to the first field being included in the first downlink control information, wherein the code point is associated with a selection of the at least one transmission configuration indicator state; and receiving, via the transceiver, a physical downlink shared channel according to the first downlink control information.
The present disclosure is directed to a user equipment for physical uplink control channel transmission, comprising: a transceiver; and a processor. The processor is coupled to the transceiver, wherein the processor is configured to: receiving first downlink control information via a transceiver; obtaining a code point from the first field in response to the first field being included in the first downlink control information, wherein the code point is associated with a selection of the at least one transmission configuration indicator state; and transmitting, via the transceiver, a physical uplink control channel according to the first downlink control information.
Based on the above description, the present disclosure provides a method of implicitly or explicitly instructing a UE to apply one or more specific TCI states for PDSCH reception or PUCCH transmission in order to reduce signaling overhead between a Base Station (BS) and the UE.
In order that the foregoing will be more readily understood, several embodiments of the drawings are described in detail below.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the disclosure and, together with the description, serve to explain the principles of the disclosure.
FIG. 1 shows a schematic diagram of a unified TCI framework on an S-TRP use case;
FIG. 2 shows a schematic diagram of a unified TCI framework on an M-TRP use case;
fig. 3 shows a schematic diagram of DCI generation according to one embodiment of the present disclosure;
fig. 4 illustrates a table of beam reports and CSI reports according to one embodiment of the present disclosure;
fig. 5 shows a schematic diagram of MAC CEs and DCIs for PDSCH reception according to one embodiment of the present disclosure;
fig. 6 shows a schematic diagram of a TCI field in DCI for PDSCH reception according to one embodiment of the present disclosure;
fig. 7 illustrates an antenna port indication table for an antenna port field in DCI for PDSCH reception according to one embodiment of the present disclosure;
Fig. 8 illustrates an antenna port indication table having antenna port fields of values "9 to 12" in DCI for PDSCH reception according to one embodiment of the present disclosure;
fig. 9 illustrates a schematic diagram of PDSCH reception based on TCI state according to one embodiment of the present disclosure;
fig. 10 illustrates a schematic diagram of PDSCH reception based on two TCI states according to one embodiment of the present disclosure;
fig. 11 shows a schematic diagram of PRI-based PUCCH transmission according to one embodiment of the present disclosure;
fig. 12 shows a schematic diagram of PRI-based PUCCH transmission according to one embodiment of the present disclosure;
fig. 13 illustrates a schematic diagram of PDSCH reception based on default TCI state according to one embodiment of the present disclosure;
fig. 14 shows a schematic diagram of unified beam pointing by DCI without DL allocation according to one embodiment of the present disclosure;
fig. 15 and 16 illustrate diagrams of unified beam pointing by DCI with DL allocation according to one embodiment of the present disclosure;
FIG. 17 illustrates a schematic diagram of an improvement of a unified TCI framework according to one embodiment of the disclosure;
fig. 18 illustrates a schematic diagram of a unified beam indication of a unified TCI framework in accordance with one embodiment of the present disclosure;
FIG. 19 illustrates a schematic diagram of TCI state subset selection in accordance with one embodiment of the present disclosure;
FIG. 20 illustrates a schematic diagram of flexible TCI state selection in accordance with one embodiment of the present disclosure;
FIG. 21 illustrates a schematic diagram of explicit TCI state selection in accordance with one embodiment of the present disclosure;
FIG. 22 illustrates a schematic diagram of explicit TCI state selection based on code points in accordance with one embodiment of the present disclosure;
fig. 23 illustrates a schematic diagram of implicit TCI state selection based on antenna port fields in accordance with one embodiment of the present disclosure;
FIG. 24 illustrates a table of preconfigured associations according to one embodiment of the present disclosure;
fig. 25 illustrates a schematic diagram of implicit TCI state selection based on values of antenna port fields, according to one embodiment of the present disclosure;
FIG. 26 illustrates a schematic diagram of implicit TCI status selection embedded in DCI with CRC parity bit scrambling, according to one embodiment of the disclosure;
fig. 27 shows a schematic diagram of DCI generation according to one embodiment of the present disclosure;
FIG. 28 illustrates a schematic diagram of implicit TCI state selection based on TCI fields in accordance with one embodiment of the present disclosure;
FIG. 29 illustrates a schematic diagram of implicit TCI state selection for a predetermined code point based on a TCI field in accordance with one embodiment of the present disclosure;
FIGS. 30 and 31 illustrate schematic diagrams of implicit TCI state selection for predetermined code points based on TCI fields according to one embodiment of the disclosure;
fig. 32 illustrates a schematic diagram of MAC CE-based implicit TCI state selection in accordance with one embodiment of the present disclosure;
fig. 33 illustrates a table of associations between fields in a MAC CE and TCI fields in DCI according to one embodiment of the present disclosure;
fig. 34 shows a schematic diagram of an implicit TCI state selection for PDSCH reception based on MAC CE according to one embodiment of the present disclosure;
FIG. 35 illustrates a schematic diagram of the functionality of a TCI state according to one embodiment of the disclosure;
FIG. 36 illustrates a schematic diagram of a TCI state for L1-based beam update, according to one embodiment of the disclosure;
fig. 37 shows a schematic diagram of TCI states for scheduled PDSCH reception in accordance with an embodiment of the present disclosure;
FIG. 38 illustrates a schematic diagram of L1-based beam update, according to one embodiment of the present disclosure;
fig. 39 shows a schematic diagram of TCI states for scheduled PDSCH reception and L1-based beam update in accordance with an embodiment of the present disclosure;
fig. 40 shows a table of new fields of DCI according to one embodiment of the present disclosure;
FIG. 41 illustrates a schematic diagram of TCI state subset selection in accordance with one embodiment of the present disclosure;
FIG. 42 illustrates a schematic diagram of flexible TCI state selection in accordance with one embodiment of the disclosure;
fig. 43 shows a schematic diagram of flexible TCI state selection for PUCCH transmission according to one embodiment of the present disclosure;
FIGS. 44 and 45 illustrate diagrams of explicit TCI state selection based on code points according to one embodiment of the present disclosure;
fig. 46 illustrates a schematic diagram of implicit TCI state selection based on antenna port fields in accordance with one embodiment of the present disclosure;
FIG. 47 illustrates a table of preconfigured associations according to one embodiment of the present disclosure;
FIG. 48 illustrates a schematic diagram of implicit TCI status selection embedded in DCI with CRC parity bit scrambling, according to one embodiment of the disclosure;
fig. 49 shows a schematic diagram of DCI generation according to one embodiment of the present disclosure;
FIG. 50 illustrates a schematic diagram of implicit TCI state selection based on TCI fields in accordance with one embodiment of the present disclosure;
FIG. 51 illustrates a schematic diagram of implicit TCI state selection for a predetermined code point based on a TCI field in accordance with one embodiment of the present disclosure;
FIG. 52 illustrates a schematic diagram of implicit TCI state selection for a predetermined code point based on a TCI field in accordance with one embodiment of the present disclosure;
FIG. 53 illustrates a schematic diagram of MAC CE-based implicit TCI state selection according to one embodiment of the present disclosure;
fig. 54 shows a table of associations between fields in MAC CEs and TCI fields in DCIs according to one embodiment of the present disclosure;
fig. 55 illustrates a schematic diagram of PRI field-based implicit TCI state selection in accordance with one embodiment of the present disclosure;
fig. 56 illustrates a table of associations between TCI fields, PUCCH resources indicated by PRI fields, and TCI states applied to PUCCH transmissions, according to one embodiment of the present disclosure;
FIG. 57 illustrates a schematic diagram of the functionality of a TCI state according to one embodiment of the disclosure;
fig. 58 shows a schematic diagram of implicit TCI state determination based on one or more TCI states applied to a scheduled PDSCH in accordance with an embodiment of the present disclosure;
FIG. 59 illustrates a schematic diagram of a conflict of one or more TCI states in accordance with one embodiment of the present disclosure;
fig. 60 illustrates a schematic diagram of PDSCH reception based on one or more default TCI states in accordance with an embodiment of the present disclosure;
fig. 61 shows a flowchart of a method for PDSCH reception according to one embodiment of the present disclosure;
fig. 62 shows a flowchart of a method for PUCCH transmission according to one embodiment of the present disclosure;
Fig. 63 shows a schematic diagram of a communication device 100 according to one embodiment of the present disclosure.
Description of the reference numerals
100: a communication device;
110: a processor;
120: a storage medium;
130: a transceiver;
s611, S612, S613, S621, S622, S623: and (3) step (c).
Detailed Description
Abbreviations in this disclosure are defined as follows:
abbreviation full scale
ACK acknowledgement
CC component carrier
CDM code division multiplexing
CG configuration authorization
CRC cyclic redundancy check
CS configuration scheduling
CSI-RS channel state information reference signal
CORESET control resource set
DCI downlink control information
DM-RS demodulation reference signal
DL downlink
DRX discontinuous reception
FDRA frequency domain resource allocation
TDRA time domain resource allocation
gNodeB next generation node B
HARQ hybrid automatic repeat request
ID identity
MAC medium access control
MAC CE MAC control element
MCS modulation coding scheme
MIMO multiple input multiple output
mTRP (M-TRP) multiple TRP
NR new radio
PDCCH physical downlink control channel
PDSCH physical downlink shared channel
PUCCH physical uplink control channel
PUSCH physical uplink shared channel
QCL quasi co-location
RNTI radio network temporary identifier
RRC radio resource control
RS reference signal
RX beam reception beam
SRS sounding reference signal
SS search space
SSB synchronization signal block
SSBRI synchronization signal block resource indicator
SPS semi-persistent scheduling
sTRP (S-TRP) single TRP
TCI transport configuration indicator
TRP transmission receiving point
Tx beam transmission beam
UE user equipment
UL uplink
WID work item description
RI rank indicator
PMI precoder matrix indicator
CQI channel quality indicator
TB transport block
SFN single frequency network
TDM time domain multiplexing
BWP bandwidth part
RV redundancy version
NDI new data indicator
L1 layer one
A-CSI-RS aperiodic CSI-RS
The RS in the present disclosure may include DLRS and/or UL RS.
DL RS configurations in the present disclosure may include: the method includes, but is not limited to, a DM-RS group index, a DM-RS resource index, a DM-RS port, a CSI-RS resource set index, a CSI-RS resource set, a CSI-RS resource index, a CSI-RS resource, a CSI-RS port index, a CSI-RS port, an SSB resource set index, an SSB resource set, an SSB resource index, an SSB resource, an SSB port index, or an SSB port.
UL RS configuration in this disclosure may include: the DM-RS group, DM-RS group index, DM-RS resource index, DM-RS port, RACH group index, RACH resource index, SRS resource set, SRS resource index, SRS resource, SRS port index, or SRS port, but is not limited thereto.
CSI-RSI in the present disclosure may comprise: the CSI-RS resource set index, CSI-RS resource set, CSI-RS resource index, CSI-RS resource, CSI-RS port index, or CSI-RS port is not limited thereto.
SSBs in the present disclosure may comprise: the SSB resource set index, SSB resource set, SSB resource index, SSB resource, SSB port index, or SSB port, but is not limited thereto.
The SRS in the present disclosure may include: the SRS resource set index, SRS resource set, SRS resource index, SRS resource, SRS port index, or SRS port is not limited thereto.
The beams in the present disclosure may include: antennas, antenna ports, antenna elements, antenna groups, antenna port groups, antenna element groups, spatial domain filters, reference signal resources, TCI states, or QCL hypotheses, but are not limited thereto. For example, the first beam may be represented as a first antenna port or a first group of antenna ports or a first spatial domain filter. For example, the first beam direction may be represented as a QCL hypothesis or a spatial domain filter.
The spatial filter in the present disclosure may include: a spatial Rx filter or a spatial Tx filter.
The spatial Rx filter in the present disclosure may include an Rx beam, spatial Rx parameters, spatial domain receive filter, or panel, but is not limited thereto.
The spatial Tx filter in the present disclosure may include: tx beams, spatial Tx parameters, spatial domain transmission filters, or panels, but are not limited thereto.
TRP in the present disclosure may comprise: BS, cell, serving cell, gndeb, panel, unlicensed cell, unlicensed serving cell, unlicensed TRP, gNodeB, eNodeB, or eNB, but is not limited thereto.
The search space cluster group (search space set group; SSSG) in the present disclosure may include: search space group (search space group; SSG), CORESET, CORESETpoolIndex or CORESET group, but are not limited thereto.
Configuration authorization in this disclosure may include: the configuration grant or configurable GrantConfigIndex, but is not limited thereto.
The SPS configuration in the present disclosure may include, but is not limited to, SPS-ConfigIndex.
The code points in this disclosure may include: index, value, or identity, but is not limited thereto.
The PDSCH antenna port in the present disclosure may include: the DM-RS port of PDSCH is not limited thereto.
The index or identity in this disclosure may include: coresetpoolndex, TRP ID or panel ID, but is not limited thereto.
In the present disclosure, a UE may be configured with at least one of the following for multi-TRP operation: the coresetpoolndex set, TRP set, or panel set, but is not limited thereto.
The L1-based beam update in this disclosure may include: unified beam update, common beam update, or unified TCI framework, but is not limited thereto.
PDSCH in this disclosure may also refer to: PUSCH, DL allocation, SPS scheduling, configuration grant, but is not limited thereto.
The communication apparatus in the present disclosure may be represented by a UE or BS (e.g., a gmodeb), but is not limited thereto.
Combinations of embodiments disclosed in the present disclosure are not to be excluded. All steps in each embodiment may not be performed in a step-by-step fashion. Embodiments in the present disclosure may be applied to unlicensed band, licensed band, non-DRX mode, or power saving, but are not limited thereto.
Fig. 3 shows a schematic diagram of DCI (e.g., format 1_1 or 1_2) generation according to one embodiment of the present disclosure. Error detection may be provided for DCI transmission by CRC. Assuming that the DCI contains bit stream { a 0 ,a 1 ,a 2 ,a 3 ,…,a A -1}. BS may generate bit stream { a by appending a plurality of CRC parity bits to bit stream { a } 0 ,a 1 ,a 2 ,a 3 ,…,a A-1 ' come toPerforming CRC attachment on DCI to produce bitstream { b } 0 ,b 1 ,b 2 ,b 3 ,…,b K-1 A plurality of CRC parity bits may include, for example, 24 bits (i.e., CRC length=24). After the CRC attachment, the BS may scramble the DCI with the CRC parity bits according to the corresponding RNTI as shown in equation (1) in order to generate the bit stream { c 0 ,c 1 ,c 2 ,c 3 ,…,c K-1 Bit stream { c }, wherein 0 ,c 1 ,c 2 ,c 3 ,…,c K-1 Is a DCI with CRC parity bits scrambled with a corresponding RNTI, and x rnti,i The ith bit of RNTI.
After the UE receives DCI from the BS, the UE may perform CRC on the DCI according to the RNTI. Specifically, the UE may descramble the scrambling bits of the DCI according to the corresponding RNTI so as to obtain the DCI with the parity bits. After that, the UE may perform CRC on the DCI with the parity bits.
Fig. 4 illustrates a table of beam reports and CSI reports according to one embodiment of the present disclosure. The UE may perform beam reporting to the BS. The beam reports may be used to find the location of the UE or to establish a beam channel between the UE and the BS. The BS may obtain location specific information, such as CRI or L1 reference signal received power (L1 reference signal received power; L1-RSRP), from the beam report. The beam reports may affect transmissions between the BS and the UE (e.g., depending on the mobility or beamwidth of the UE) over a long or medium term. On the other hand, the UE may perform CSI reporting on the BS based on the established beam channel. CSI reports may be used to maximize throughput of transmissions between the BS and the UE (e.g., for PDSCH scheduling). The BS may obtain quality specific information, such as RI, PMI, or CQI, from the CSI report. CSI reporting may affect transmissions between the BS and the UE in a short period of time (e.g., due to fast fading).
Fig. 5 shows a schematic diagram of MAC CEs and DCIs for PDSCH reception according to one embodiment of the present disclosure. The MAC CE may contain a field Ci and a corresponding reserved field (R field). Field C i Can be associated with a TCI State ID preconfigured to a UE i,1 Associated, and may indicate that the TCI state ID is contained i,2 Whether or not octets of (i) are present in the MAC CE, where i may be an index of the code point of the TCI field. If field C i Set to "0", then contains the TCI state ID i,2 May not be present in the MAC CE. If field Ci is set to "1", then it contains the TCI State ID i,2 Can exist in the MAC CE. The DCI may include a TCI field. TCI State ID i,j The jth TCI state indicated by the ith code point in the TCI field may be represented, where i may be an index of the code point of the TCI field.
Fig. 6 shows a schematic diagram of a TCI field in DCI for PDSCH reception according to one embodiment of the present disclosure. The UE may receive the scheduled PDSCH according to one or more TCI states indicated by the TCI field in DCI #1, where DCI #1 is associated with a DL allocation. The DM-RS port of the scheduled PDSCH may be quasi co-located with the TCI state indicated by the TCI field. For example, if the code point of the TCI field is "00", the UE may apply TCI state #x and TCI state #y for PDSCH reception, wherein TCI state #x and TCI state #y are used to receive PDSCH data from different TRPs, respectively. If the code point of the TCI field is "01", the UE may apply TCI state #x for PDSCH reception. If the code point of the TCI field is "10", the UE may apply the TCI state #y for PDSCH reception. PDSCH scheduling between M-TRP and S-TRP by BS or UE may be allowed according to scheduling flexibility or CSI reporting (e.g., including RI, PMI, or CQI).
Fig. 7 illustrates an antenna port indication table for an antenna port field in DCI for PDSCH reception according to one embodiment of the present disclosure. The UE may receive the scheduled PDSCH according to one or more antenna ports indicated by an antenna port field in the DCI, where the DCI may be used for PDSCH demodulation. Specifically, the table includes a value, a number of one or more DM-RS CDM groups, and an association between one or more DM-RS ports. The UE may store the table in advance. After the UE receives the DCI, the UE may obtain a value from an antenna port field of the DCI. The UE may apply one or more DM-RS ports associated with the values for PDSCH demodulation. Values of "0 to 8" of the antenna port field may be used for an S-TRP use case, and values of "9 to 12" of the antenna port field may be used for an S-TRP use case or an M-TRP use case.
Fig. 8 illustrates an antenna port indication table having antenna port fields of values of "9 to 12" in DCI for PDSCH reception, wherein the table may be stored in advance in a UE, according to one embodiment of the present disclosure. Assume that the TCI field in DCI indicates that the UE applies two TCI states (i.e., a first TCI state and a second TCI state) for PDSCH reception, and that the antenna port field in DCI indicates to the UE multiple DM-RS ports within different CDM groups. The UE may determine a relationship between the first TCI state, the second TCI state, and the plurality of antenna ports according to a pre-stored table. For example, if the value of the antenna port field in the DCI is "9", the UE may apply the first TCI state using DM-RS port 0 and DM-RS port 1, and the UE may apply the second TCI state using DM-RS port 2. In other words, if the value of the antenna port field is "9", the UE may determine (according to a pre-stored table) that DM-RS port 0 and DM-RS port 1 belong to one CDM group corresponding to a first TCI state, and DM-RS port 2 belongs to another CDM group corresponding to a second TCI state.
Fig. 9 illustrates a schematic diagram of PDSCH reception based on TCI state according to one embodiment of the present disclosure. The TCI field in dci#1 may indicate one TCI state of the UE. For example, if the code point of the TCI field in dci#1 is set to "01", the UE may apply TCI state #x for PDSCH reception. The UE may determine that the DM-RS port for PDSCH reception is quasi co-located with TCI state #x. The repetition number corresponding to the multiple slot level PDSCH transmission occasions may be indicated by the TDRA field in DCI #1 or may be configured by an RRC message. The UE may apply the TCI state #x on one or more slots of the PDSCH transmission occasion according to the repetition number. For example, if the repetition number indicated by the TDRA field is "4", the UE may apply the TCI state #x on four slot-level PDSCH transmission occasions.
Fig. 10 illustrates a schematic diagram of PDSCH reception based on two TCI states according to one embodiment of the present disclosure. The TCI field in dci#1 may indicate two TCI states of the UE. For example, if the code point of the TCI field in dci#1 is set to "00", the UE may apply TCI state #x and TCI state #y for PDSCH reception. The repetition number corresponding to the multiple slot level PDSCH transmission occasions may be indicated by the TDRA field in DCI #1 or may be configured by an RRC message. If the repetition number is greater than 1 (e.g., 4 slots), the UE may apply the TCI state #x or TCI state #y on each of the PDSCH transmission occasions according to a cyclic mapping or sequential mapping. If the UE uses cyclic mapping, the two TCI states may be applied to two adjacent PDSCH transmission occasions, respectively. For example, the TCI state #x may be applied to the first and third slots of the PDSCH transmission occasion, and the TCI state #y may be applied to the second and fourth slots of the PDSCH transmission occasion. If the UE uses sequential mapping, the two TCI states may be applied to two groups of PDSCH transmission time slots, respectively, where each group may include one or more consecutive PDSCH transmission occasions. For example, the TCI state #x may be applied to the first and second slots of the PDSCH transmission occasion, and the TCI state #y may be applied to the third and fourth slots of the PDSCH transmission occasion.
Fig. 11 shows a schematic diagram of PRI-based PUCCH transmission according to one embodiment of the present disclosure. The PRI in DCI #1 may indicate one spatial setting of the UE, where the spatial setting may be a spatial setting activated via a MAC CE. The UE may apply spatial setup for PUCCH transmission. For example, the PRI in DCI #1 may indicate a first spatial setting of the UE. The repetition number corresponding to the plurality of slot level PUCCH transmission occasions may be configured by the RRC message. The UE may apply a first spatial setting on one or more slots of the PUCCH transmission occasion according to the repetition number. For example, if the repetition number configured by the RRC message is "4", the UE may apply the first spatial setting on four slot level PUCCH transmission occasions.
Fig. 12 shows a schematic diagram of PRI-based PUCCH transmission according to one embodiment of the present disclosure. The PRI in DCI #1 may indicate two spatial settings of the UE, where the two spatial settings may be spatial settings activated via a MAC CE. The UE may apply two spatial settings for PUCCH transmission. For example, the PRI in DCI #1 may indicate a first spatial setting and a second spatial setting of the UE. The repetition number corresponding to the plurality of slot level PUCCH transmission occasions may be configured by the RRC message. If the repetition number is greater than 1 (e.g., 4 slots), the UE may apply a first spatial setting or a second spatial setting on each of the PUCCH transmission occasions according to a cyclic mapping or a sequential mapping. If the UE uses cyclic mapping, two spatial settings may be applied to two neighboring PUCCH transmission opportunities, respectively. For example, the first spatial setting may be applied to the first slot and the third slot of the PUCCH transmission occasion. If the UE uses sequential mapping, then the two spatial settings may be applied to two PUCCH transmission time groups, respectively, where each group may include one or more consecutive PUCCH transmission occasions. For example, a first spatial setting may be applied to a first slot and a second slot of a PUCCH transmission occasion, and a second spatial setting may be applied to a third slot and a fourth slot of the PUCCH transmission occasion.
In an M-TRP transmission scheme, one or more TCI states may be applied to intra-slot repetition (e.g., PDSCH transmission occasions in a slot). Assume that the UE is configured by a higher layer parameter repetition scheme and is indicated one or more DM-RS ports within one CDM group via an antenna port field of the DCI. The number of PDSCH transmission occasions may be derived from the number of TCI states indicated by the TCI field of the scheduling DCI. For example, if the TCI field of the DCI indicates two states (e.g., a first TCI state and a second TCI state), the UE may expect to receive two PDSCH transmission occasions, where the first TCI state may be applied to the first PDSCH transmission occasion and the second TCI state may be applied to the second PDSCH transmission occasion. The second PDSCH transmission occasion may have the same number of symbols as the first PDSCH transmission occasion.
In an M-TRP transmission scheme, one or more TCI states may be applied for inter-slot repetition (e.g., PDSCH transmission occasions in different slots). Assuming that the UE is configured by a higher layer parameter repetition number in PDSCH-timedomainresource allocation, the UE may expect to have one or more TCI states (e.g., two TCI states) indicated by the code point of the TCI field in the DCI. The UE may also expect to obtain information from the time domain resource allocation field and the antenna port field of the DCI. The time domain resource allocation field may indicate an entry containing a reportiionnumber in PDSCH-timedomainresource allocation. The antenna port field may indicate one or more DM-RS ports within one CDM group. If the TCI field indicates two TCI states, the UE may expect to receive multiple slot level PDSCH transmission opportunities for the same TB, where the two TCI states are used on multiple PDSCH transmission opportunities in the repetition number consecutive slots. If the TCI field indicates one TCI state, the UE may expect to receive multiple slot level PDSCH transmission occasions of the same TB, where one TCI state is used on multiple PDSCH transmission occasions in recurring number consecutive slots.
In an M-TRP transmission scheme, one or more TCI states may be applied for inter-slot repetition. Assuming that the UE is configured by higher layer parameters PDSCH-config, where PDSCH-config indicates at least one entry containing a repetition number in PDSCH-timedomainresource allocation, the UE may expect to have one or more TCI states (e.g., two TCI states) indicated by the code point of the TCI field in the DCI. The UE may also expect to obtain information from the time domain resource allocation field and the antenna port field in the DCI. The time domain resource allocation field may indicate an entry containing a reportiionnumber in PDSCH-timedomainresource allocation. The antenna port field may indicate one or more DM-RS ports within one CDM group. If the TCI field indicates two TCI states, the UE may apply the first TCI state to the first PDSCH transmission occasion. The UE may apply the second TCI state to the second PDSCH transmission occasion when the value indicated by the repetition number in PDSCH-timedomainresource allocation is equal to two. The UE may be further configured to enable cyclomapping or sequentialMapping in tciMapping when the value indicated by the repetition number in PDSCH-timedomainresource allocation is greater than two. When cyclics mapping is enabled, the first and second TCI states may be applied to the first and second PDSCH transmission occasions, respectively, and the same TCI state mapping mode may continue to the remaining PDSCH transmission occasions. When sequentialMapping is enabled, a first TCI state may be applied to the first PDSCH transmission occasion and the second PDSCH transmission occasion, a second TCI state may be applied to the third PDSCH transmission occasion and the fourth PDSCH transmission occasion, and the same TCI state mapping pattern may continue to the remaining PDSCH transmission occasions.
Regarding space division multiplexing (space division multiplexing; SDM), the TCI state to be applied may be determined by the UE according to the corresponding antenna port. Assuming that the UE is configured by a higher layer parameter repetition number in PDSCH-timedomainresource allocation, the UE may expect to have multiple TCI states (e.g., two TCI states) indicated by the code point of the TCI field in the DCI. The UE may also expect to obtain information from an antenna port field of the DCI, where the antenna port field may indicate multiple DM-RS ports within two different CDM groups. If an entry containing a reportiionnumber in PDSCH-timedomainresource allocation is not indicated by DCI (e.g., time domain resource allocation), then the UE may determine from the antenna port indication table that the first TCI state may correspond to a CDM group of antenna ports and the second TCI state may correspond to another CDM group of antenna ports.
Regarding SFN-SDM, when a UE configures SFN scheme epdsch with a setting of "SFN scheme a" and the UE indicates that there are two TCI states in a code point of a TCI field in DCI scheduling PDSCH, the UE may assume that one or more DM-RS ports of PDSCH may be quasi co-located with DL-RS of the two TCI states. When the UE configures sfn scheme pdch with the set "sfn scheme b" and the UE indicates that there are two TCI states in the code point of the TCI field in the DCI scheduling the PDSCH, the UE may assume that one or more DM-RS ports of the PDSCH may be quasi-co-located with DL-RS of the two TCI states, except for the quasi-co-location parameter (e.g., doppler shift or doppler dispersion) of the second indicated TCI state.
Fig. 13 illustrates a schematic diagram of PDSCH reception based on default TCI state according to one embodiment of the present disclosure. The default TCI state may be indicated by a list of code points configured to the UE via the MAC CE, where the list may include one or more code points indicating one TCI state and one or more code points indicating two TCI states. The UE may determine a time offset between reception of the DCI and a corresponding PDSCH according to the DCI. If the time offset is less than a threshold (e.g., time for decoding DCI), the UE may determine to apply two default TCI states for PDSCH reception from the list. In particular, the default TCI state may be indicated by a lowest code point among a plurality of code points of the TCI field, wherein each of the plurality of code points indicates two different TCI states. For example, the UE may respond to code point "1" as multiple code points indicating two different TCI states (e.g., code point "1"And code point "3"), the determination of the default TCI state may be the TCI state ID indicated by code point "1" of the TCI field 1,1 And TCI State ID 1,2 。
In one embodiment, if the UE is configured with enabletwodufaulttci-States and at least one TCI code point indicates two TCI States, the UE may assume that a DM-RS port of a PDSCH or PDSCH transmission occasion of the serving cell may be quasi co-located with one or more RSs, wherein the one or more RSs are associated with one or more QCL parameters associated with one or more TCI States and the one or more TCI States correspond to a lowest code point among the TCI code points containing two different TCI States.
In one embodiment, when the UE is configured by or has a higher layer parameter repetition scheme set to "tdmdschema" and the offset between reception of the DCI and the first PDSCH transmission occasion is less than a threshold timeduration forqcl, the mapping relationship between the TCI state and the PDSCH transmission occasion (including the first PDSCH transmission occasion) may be indicated by the lowest code point among a plurality of code points of the TCI field, wherein each of the plurality of code points may indicate two different TCI states for PDSCH reception. The lowest code point may be associated with a selection of a plurality of activated TCI states in a time slot corresponding to the first PDSCH transmission occasion. In this case, if the PDSCH DM-RS and the PDCCH DM-RS overlap in at least one symbol, and "QCL-type" in the two TCI states corresponding to the lowest code point is different from "QCL-type" in the PDCCH DM-RS, the UE may be expected to prioritize PDCCH reception associated with CORESET. That is, the UE may consider the following rules: the priority of the TCI state for PDCCH reception is higher than that of the TCI state for PDSCH reception. The same rules may also apply for the in-band CA case (e.g., when PDSCH and CORESET are in different component carriers).
Fig. 14 shows a schematic diagram of unified beam indication by DCI without DL allocation according to one embodiment of the present disclosure. In step 1, the TCI state list may be configured to the UE by an RRC message. For example, the RRC message may configure a TCI state pool to the UE, where the TCI state pool may include TCI state #0, TCI state #1, TCI state #2 … … TCI state #n. In step 2, one or more TCI states may be activated by the MAC CE. For example, TCI state #x, TCI state #y, TCI state #w, and TCI state #z in the TCI state pool may be activated by the MAC CE. In step 3, the unified beam may be indicated by DCI without DL allocation. For example, assume TCI state #x is a TCI state currently applied by the UE, where TCI state #x may be indicated by a previous DCI, where the previous DCI may be defined as a DCI preceding DCI #1 in the present disclosure. That is, the reception of the previous DCI precedes the reception of dci#1. The TCI field of dci#1 may indicate TCI state #y to the UE. After a time period (e.g., time for beam application), the TCI state of the UE application may switch from TCI state #x to TCI state #y.
Fig. 15 and 16 illustrate diagrams of unified beam pointing by DCI with DL allocation according to one embodiment of the present disclosure. If the TCI state (e.g., TCI state #y) indicated by dci#1 having DL allocation is different from the TCI state (e.g., TCI state #x) indicated by previous DCI, as shown in fig. 15, the TCI state (e.g., TCI state #y) indicated by dci#1 may be applied for unified beam update. The DM-RS port of the scheduled PDSCH may be quasi co-located with the TCI state indicated by the previous DCI. If the TCI state indicated by DCI #1 with DL allocation is equal to the TCI state indicated by the previous DCI (e.g., TCI state #x), as shown in fig. 16, the UE may not perform uniform beam update. The DM-RS port of the scheduled PDSCH may be quasi co-located with the TCI state indicated by the previous DCI. The parameter BeamAppTime shown in fig. 15 may represent the time for beam application.
Fig. 17 illustrates a schematic diagram of an improvement of a unified TCI framework according to one embodiment of the present disclosure. Regarding improvement 1, the tci field may be applied to unified beam update. That is, the TCI field in the scheduling DCI may not be applied to the scheduled PDSCH. For example, the TCI state #y indicated by dci#1 may be applied to unified beam update. The TCI state #x indicated by the previous DCI may be applied to the PDSCH scheduled by dci#1. Regarding improvement 2, if the TCI state (e.g., TCI state #y) indicated by dci#1 with DL assignment is different from the TCI state (e.g., TCI state #x) indicated by the previous DCI, then the execution of the unified beam update by the UE may be triggered. With respect to improvement 3, the ue may receive PDSCH scheduled by dci#1 according to the TCI state (e.g., TCI state #x) indicated by the previous DCI. That is, the UE may not receive the PDSCH scheduled by dci#1 according to the TCI state (e.g., TCI state #y) indicated by the TCI field of dci#1.
Fig. 18 illustrates a schematic diagram of a unified beam indication of a unified TCI framework in accordance with one embodiment of the present disclosure. In step 1, the TCI state list may be configured to the UE by an RRC message. For example, the RRC message may configure a TCI state pool to the UE, where the TCI state pool may include TCI state #0, TCI state #1, TCI state #2 … … TCI state #n. In step 2, one or more TCI states may be activated by the MAC CE. For example, the TCI state #a in the TCI state pool may be activated by the MAC CE 0 TCI state #b 0 TCI state #c 0 And TCI state #d 0 For DL transmission. TCI state #a in the state pool may be activated by MAC CETCI 1 TCI state #b 1 TCI state #c 1 And TCI state #d 1 For UL transmissions. In step 3, one or more unified beams may be indicated by the DCI. For example, assume TCI state #a 0 TCI state for the UE currently applied to DL transmission, and TCI state #a 0 TCI state currently applied for UL transmission for UE. The TCI field of dci#1 may indicate TCI state #a to the UE 1 And TCI state #b 1 . After a period of time (e.g., time for beam application), the TCI state that the UE applies to DL transmissions may be from TCI state #a 0 Switch to TCI state #a 1 And the TCI state of the UE applied to UL transmissions may be derived from TCI state #b 0 Switch to TCI state #b 1 . Note that the same beam (TCI state #a 0 Or TCI state #b 0 ) Can be used for a plurality of DL channels/signals/CCs and the same beam (TCI state #a) 1 Or TCI state #b 1 ) Can be used for multiple UL channels/signals/CCs.
In one embodiment, the UE may be configured with a TCI-State configuration list (via higher layer parameters, e.g., PDSCH-Config) and a TCI-State ID, where the TCI-State ID may contain information of the source RS. The TCI-State configuration list and TCI-State ID may be used by the UE to receive reference signals quasi co-located with the DM-RS of the PDSCH, the DM-RS of the PDCCH in the CC, or the CSI-RS. In some cases, the TCI-State configuration list and TCI-State ID may be used by the UE to determine UL Tx spatial filters for dynamic grants, PUSCH based on configuration grants, PUCCH resources, or SRS, if applicable.
In one embodiment, the UE may receive an activation command via the MAC CE, wherein the activation command is to map the TCI state and/or the TCI state pair. The TCI state of the DL channel/signal may be mapped to a code point of the TCI field of the DCI, and the TCI state of the UL channel/signal may be mapped to another code point of the TCI field of the DCI. The TCI field may be used for one or a set of CC/DL BWP. The TCI field may be used for one or a set of CC/UL BWP, if applicable.
In one embodiment, a UE having an activated TCI State configuration with a TCI-State ID may receive DCI (e.g., format 1_1/1_2), where the DCI may provide an indicated TCI State corresponding to the configured TCI-State ID. DCI (e.g., format 1_1/1_2) may or may not have DL allocation. If the DCI (e.g., format 1_1/1_2) does not have a DL assignment, then the UE may assume that RNTI (e.g., CS-RNTI) may be used to scramble the CRC of the DCI and the value of the DCI field may be set as follows: RV field = all "1"; MCS field = all "1"; ndi= "0"; FDRA type 0 field = all "0"; FDRA type 1 field = all "1"; or dynamicSwitch = all "0".
In one embodiment, it is assumed that the UE has transmitted the last symbol of the PUCCH with HARQ-ACK information corresponding to the current DCI or the PDSCH scheduled by the current DCI, where the DCI indicates the TCI state and has no DL allocation. If the TCI State indicated by the current DCI is different from the TCI State indicated by the previous DCI, the TCI State indicated by the current DCI with the TCI-State ID may be applied for a time period (e.g., time for beam application), where the time period may be one or more symbols after the last symbol of the PUCCH. Both the first slot and the symbol corresponding to the time period (e.g., time for beam application) may be determined on the carrier with the smallest subcarrier space (SCS) among the plurality of carriers to which the TCI state is applied. The UE may assume that the indicated TCI State with TCI-State ID is for both DL and UL, either DL only or UL only.
In one embodiment, if the UE is configured with a TCI State with a TCI-State ID for UL, the UE may perform PUSCH transmission corresponding to type 1 configuration grant, type 2 configuration grant, or dynamic grant according to a spatial relationship associated with an RS for determining UL tx spatial filters or with an RS configured with a QCL type, wherein the QCL type is set to "typeD" of the indicated TCI State with the TCI-State ID.
In one embodiment, spatial settings for PUCCH transmissions performed by the UE may be provided by the indicated TCI state.
In one embodiment, if a TCI status ID is provided to the UE, then the DM-RS antenna ports for PDCCH reception in CORESET (other than CORESET with index 0) may be associated with only a set of UE specific search spaces (UE-specific search space; USS) and/or a set of type 3PDCCH common search spaces (common search space; CSS), and the DM-RS antenna ports for PDSCH repetition scheduled by DCI format provided by PDCCH reception in CORESET may be quasi-co-located with the reference signal provided by the indicated TCI status.
Fig. 19 illustrates a schematic diagram of TCI state subset selection according to one embodiment of the present disclosure. The UE may receive the scheduled PDSCH according to one or more TCI states indicated by the previous DCI. That is, the UE may not receive the scheduled PDSCH according to one or more TCI states indicated by the TCI field in DCI # 1. Although the UE may be served by 2 beams, the UE should consider PDSCH scheduling between the M-TRP scheme and the S-TRP scheme according to scheduling flexibility and/or channel quality between the UE and the BS, for example.
FIG. 20 illustrates a schematic diagram of flexible TCI state selection according to one embodiment of the disclosure. For the unified TCI framework, dynamic PDSCH scheduling between the S-TRP scheme and the M-TRP scheme may be supported. The UE may determine or select one or more TCI states for receiving the scheduled PDSCH based on the scheduling DCI (e.g., DCI # 1) and/or one or more applied TCI states indicated by previous DCI (e.g., TCI state #x and/or TCI state #y).
FIG. 21 illustrates a schematic diagram of explicit TCI state selection in accordance with one embodiment of the present disclosure. One or more TCI states (e.g., TCI state #x and TCI state #y) may be indicated to the UE by a previous DCI (e.g., by a TCI field in a DCI preceding DCI # 1), where the one or more TCI states may be TCI states applied by the UE when DCI #1 is received. The UE may receive dci#1 with a new field (e.g., TCI select field) for TCI state selection. Specifically, if the TCI selection field is included in dci#1, the UE determines a selection of one or more TCI states indicated by the previous DCI according to the TCI selection field of dci#1. After that, the UE may receive PDSCH scheduled by dci#1 according to the selection of one or more TCI states indicated by dci#1.
In one embodiment, PDSCH scheduled by dci#1 corresponds to semi-persistent scheduling.
Fig. 22 illustrates a schematic diagram of explicit TCI state selection based on code points according to one embodiment of the present disclosure. The code point of the TCI selection field in DCI #1 received by the UE may be associated with the selection of one or more TCI states indicated by the previous DCI (e.g., by the TCI field in the previous DCI). For example, assume that TCI state #x and TCI state #y are indicated to the UE by the previous DCI. If the TCI selection field is included in DCI #1 received by the UE, the UE may obtain a selection from the TCI selection field and may apply one or more TCI states indicated by the previous DCI to the DM-RS according to the selection. If the code point of the TCI selection field in dci#1 is "00", the UE may apply TCI state #x and TCI state #y to one or more DM-RS ports and may receive PDSCH scheduled by dci#1 according to the one or more DM-RS ports. If the code point of the TCI selection field in DCI #1 is "01", the UE may apply TCI state #x to one or more DM-RS ports and may receive PDSCH scheduled by DCI #1 according to the one or more DM-RS ports. If the code point of the TCI selection field in DCI #1 is "10", the UE may apply TCI state #y to one or more DM-RS ports and may receive PDSCH scheduled by DCI #1 according to the one or more DM-RS ports. Code point "11" of the TCI select field in DCI #1 may be reserved for other purposes.
Fig. 23 illustrates a schematic diagram of implicit TCI state selection based on an antenna port field according to one embodiment of the present disclosure. In one embodiment, implicit TCI state selection may be applied in response to the TCI selection field not being included in the scheduling DCI (e.g., dci#1 (format 1_1/1_2)). In particular, the UE may determine one or more TCI states to apply from one or more TCI states indicated by a previous DCI (e.g., by a TCI field in the previous DCI) according to a preconfigured association between the one or more TCI states indicated by the previous DCI and the one or more DM-RS ports. One or more DM-RS ports may be indicated by an antenna port field of dci#1 (format 1_1/1_2). The UE may receive PDSCH scheduled by DCI #1 through one or more DM-RS ports, where the one or more DM-RS ports correspond to one or more TCI states indicated by previous DCI. One or more TCI states (or one or more DM-RS ports corresponding to one or more TCI states) indicated by the previous DCI may be applied for DL allocation in a time period starting from the last symbol of the PDCCH. In one embodiment, the pre-configured association may be configured to the UE via an RRC message.
FIG. 24 illustrates a table of preconfigured associations according to one embodiment of the present disclosure. Fig. 25 illustrates a schematic diagram of implicit TCI state selection based on values of antenna port fields, according to one embodiment of the present disclosure. Each of the DM-RS ports indicated by the antenna port field may be associated with one or more TCI states indicated by a previous DCI, as shown in the table. The antenna port field may represent one or more DM-RS ports of a single-user MIMO (SU-MIMO) communication system or a multi-user MIMO (MU-MIMO) communication system. For example, if the value of the antenna port field is one of "0" to "2" and "9" to "15", the antenna port field may represent one or more DM-RS ports of the SU-MIMO communication system. If the value of the antenna port field is one of "3" to "8", the antenna port field may represent one or more DM-RS ports of the MU-MIMO communication system.
For example, if the value of the antenna port field is "10", the UE may determine from the table that DM-RS port 0 through DM-RS port 3 are associated with a first TCI state (e.g., TCI state #x) indicated by the previous DCI. Thus, the UE may apply the TCI state #x to the DM-RS port 0 to DM-RS port 3, and may receive the PDSCH scheduled by the DCI #1 through the DM-RS port 0 to DM-RS port 3. For another example, if the value of the antenna port field is "14", the UE may determine from the table that DM-RS port 0 through DM-RS port 3 are associated with a second TCI state (e.g., TCI state #y) indicated by the previous DCI. Thus, the UE may apply the TCI state #y to the DM-RS port 0 to DM-RS port 3, and may receive the PDSCH scheduled by the DCI #1 through the DM-RS port 0 to DM-RS port 3. For another example, if the value of the antenna port field is "15", the UE may determine from the table that DM-RS port 0 through DM-RS port 3 are associated with a first TCI state (e.g., TCI state #x) and a second TCI state (e.g., TCI state #y) indicated by the previous DCI. Thus, the UE may apply the TCI state #x and the TCI state #y to the DM-RS ports 0 to 3 and may receive the PDSCH scheduled by the DCI #1 through the DM-RS ports 0 to 3.
Fig. 26 shows a schematic diagram of implicit TCI state selection embedded in DCI with CRC parity bit scrambling, according to one embodiment of the present disclosure. Fig. 27 shows a schematic diagram of DCI (e.g., format 1_1/1_2) generation according to one embodiment of the present disclosure. In one embodiment, implicit TCI state selection may be applied in response to the TCI selection field not being included in the scheduling DCI (e.g., DCI # 1).
Assuming that the DCI contains bit stream { a 0 ,a 1 ,a 2 ,a 3 ,…,a A-1 }. BS may generate bit stream { a by appending a plurality of CRC parity bits to bit stream { a } 0 ,a 1 ,a 2 ,a 3 ,…,a A-1 Performing CRC attachment on DCI to produce bit stream { b } 0 ,b 1 ,b 2 ,b 3 ,…,b K-1 A plurality of CRC parity bits may include, for example, 24 bits (i.e., CRC length=24). After CRC attachment, if a unified TCI framework is applicable, the BS may scramble the DCI with CRC parity bits according to the corresponding RNTI and TCI status selection mask as shown in equation (2) to generate the bit stream { c) 0 ,c 1 ,c 2 ,c 3 ,…,c K-1 Bit stream { c }, wherein 0 ,c 1 ,c 2 ,c 3 ,…,c K-1 Is DCI with CRC parity bits scrambled with corresponding RNTI and TCI status selection masks, x rnti,i Is the ith bit of RNTI, and x TS,i The ith bit of the mask is selected for the TCI state. On the other hand, if the unified TCI framework is not applicable, the BS may scramble the DCI with CRC parity bits according to the corresponding RNTI as shown in equation (3) in order to generate the bit stream { c } 0 ,c 1 ,c 2 ,c 3 ,…,c K-1 Bit stream { c }, wherein 0 ,c 1 ,c 2 ,c 3 ,…,c K-1 Is a DCI with CRC parity bits scrambled with a corresponding RNTI, and x rnti,i The ith bit of RNTI.
After the UE receives DCI (e.g., DCI #1 with DL allocation) from the BS, the UE may perform CRC on the DCI according to the RNTI and/or TCI state selection mask, where the TCI state selection mask corresponds to one or more TCI states indicated by previous DCI. If the unified frame is applicable, the TCI status selection mask is used to perform CRC, and if the unified frame is not applicable, the TCI status mask is not used to perform CRC. The UE may descramble the scrambling bits of dci#1 according to the RNTI and/or TCI status selection mask to obtain DCI with parity bits. After that, the UE may perform CRC on the DCI with the parity bits. If the unified frame is applicable and the CRC is successful, the UE may apply one or more TCI states corresponding to the TCI state selection mask to one or more DM-RS ports and may receive the PDSCH scheduled by DCI #1 through the one or more DM-RS ports.
For example, the UE may descramble the scrambling bits of dci#1 according to TCI state selection mask <0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0> to obtain DCI with parity bits. After that, the UE may perform CRC on the DCI with the parity bits. If the CRC is successful, the UE may apply a first TCI state (e.g., TCI state #x) corresponding to TCI state selection mask <0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0> to one or more DM-RS ports and may receive the PDSCH scheduled by DCI#1 through the one or more DM-RS ports. For another example, the UE may descramble the scrambling bits of dci#1 according to TCI state selection mask <0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1> to obtain DCI with parity bits. After that, the UE may perform CRC on the DCI with the parity bits. If the CRC is successful, the UE may apply a second TCI state (e.g., TCI state #y) corresponding to TCI state selection mask <0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1> to one or more DM-RS ports and may receive the PDSCH scheduled by DCI#1 through the one or more DM-RS ports. For another example, the UE may descramble the scrambling bits of dci#1 according to TCI state selection mask <0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0> to obtain DCI with parity bits. After that, the UE may perform CRC on the DCI with the parity bits. If the CRC is successful, the UE may apply a first TCI state (e.g., TCI state #x) and a second TCI state (e.g., TCI state #y) corresponding to TCI state selection mask <0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0> to one or more DM-RS ports and may receive the PDSCH scheduled by DCI#1 through the one or more DM-RS ports.
In one embodiment, the association between the TCI state selection mask and the one or more TCI states may be configured to the UE via an RRC message.
Fig. 28 illustrates a schematic diagram of implicit TCI state selection based on TCI fields, according to one embodiment of the present disclosure. In one embodiment, implicit TCI state selection may be applied in response to the TCI selection field not being included in the scheduling DCI (e.g., DCI # 1). In particular, the UE may determine one or more TCI states to apply from one or more TCI states indicated by a previous DCI (e.g., by a TCI field in a previous DCI) according to the TCI field in DCI # 1. The UE may apply the determined one or more TCI states to one or more DM-RS ports and may receive PDSCH scheduled by dci#1 through the one or more DM-RS ports.
Fig. 29 illustrates a schematic diagram of implicit TCI state selection based on predetermined code points of TCI fields, according to one embodiment of the present disclosure. In one embodiment, implicit TCI state selection may be applied in response to the TCI selection field not being included in the scheduling DCI (e.g., dci#1 (format 1_1/1_2)). Assume that TCI state #x and TCI state #y are indicated to the UE by the previous DCI. The UE may obtain a code point for the TCI field in DCI #1, where the code point may be associated with the selection of one TCI state indicated by the previous DCI. If the code point of the TCI field is a predetermined code point "110", the UE may apply a first TCI state (e.g., TCI state #x) indicated by the previous DCI to one or more DM-RS ports and may receive the PDSCH scheduled by dci#1 through the one or more DM-RS ports. If the code point of the TCI field is a predetermined code point "111", the UE may apply a second TCI state (e.g., TCI state #y) indicated by the previous DCI to one or more DM-RS ports and may receive the PDSCH scheduled by dci#1 through the one or more DM-RS ports.
In one embodiment, the association between the predetermined code point of the TCI field and the selection of the TCI state indicated by the previous DCI may be configured to the UE by an RRC message.
Fig. 30 and 31 illustrate schematic diagrams of implicit TCI state selection based on predetermined code points of TCI fields, according to one embodiment of the present disclosure. In one embodiment, implicit TCI state selection may be applied in response to the TCI selection field not being included in the scheduling DCI (e.g., dci#1 (format 1_1/1_2)). Assume that TCI state #x and TCI state #y are indicated to the UE by the previous DCI. The UE may obtain a code point for the TCI field in DCI #1, where the code point may be associated with a selection of one or more TCI states indicated by a previous DCI. If the code point of the TCI field is a predetermined code point, the UE may determine or select one TCI state corresponding to the predetermined code point from one or more TCI states indicated by the previous DCI. The UE may apply the selected TCI state to one or more DM-RS ports and may receive PDSCH scheduled by dci#1 through the one or more DM-RS ports. If the code point of the TCI field is not the predetermined code point, the UE may apply one or more TCI states indicated by the previous DCI to one or more DM-RS ports, and the UE may receive the PDSCH scheduled by DCI #1 through the one or more DM-RS ports. In one embodiment, the association between the predetermined code point of the TCI field and the selection of the TCI state indicated by the previous DCI may be configured to the UE by an RRC message.
For example, the predetermined code point of the TCI field may include a predetermined code point "110" and a predetermined code point "111". If the code point of the TCI field is a predetermined code point "110", the UE may apply a first TCI state (e.g., TCI state #x) indicated by the previous DCI to one or more DM-RS ports and may receive the PDSCH scheduled by dci#1 through the one or more DM-RS ports. If the code point of the TCI field is a predetermined code point "111", the UE may apply a second TCI state (e.g., TCI state #y) indicated by the previous DCI to one or more DM-RS ports and may receive the PDSCH scheduled by dci#1 through the one or more DM-RS ports. If the code point of the TCI field is a code point other than the predetermined code point "110" and code point "111", the UE may apply the first TCI state and the second TCI state (e.g., TCI state #x and TCI state #y) indicated by the previous DCI to one or more DM-RS ports and may receive the PDSCH scheduled by dci#1 through the one or more DM-RS ports.
Fig. 32 illustrates a schematic diagram of MAC CE-based implicit TCI state selection in accordance with one embodiment of the present disclosure. In one embodiment, implicit TCI state selection may be applied in response to the TCI selection field not being included in the scheduling DCI (e.g., dci#1 (format 1_1/1_2)). Assume that TCI state #x and TCI state #y are indicated to the UE by the previous DCI. The UE may obtain a code point for the TCI field in DCI #1, where the code point may be associated with a selection of one or more TCI states indicated by a previous DCI. The functionality of the selected TCI state may be determined by the UE from the MAC CE. Fig. 33 illustrates a table of associations between fields in a MAC CE and TCI fields in DCI (e.g., DCI # 1), where the table of associations is configurable to a UE via, for example, an RRC message, according to one embodiment of the present disclosure. The MAC CE may contain field C i And corresponding field D i . The field Ci may be associated with a first TCI state (e.g., TCI state #w, TCI state #x, or TCI state #y as shown in the table) preconfigured to the UE, and may indicate whether an octet containing a second TCI state (e.g., TCI state #z or TCI state #y as shown in the table) preconfigured to the UE is present in the field D of the MAC CE i Where i may be the index of the code point of the TCI field. If field C i Set to "0", thatOctets containing the second TCI state may not be present in field D of the MAC CE i Is a kind of medium. If field C i Set to "1", then an octet containing the second TCI state may be present in field D of the MAC CE i Is a kind of medium. Field D i The functionality of the ith code point of the TCI field may be indicated. If field D i Set to "0", then one or more TCI states corresponding to the ith code point of the TCI field may be used for L1 based beam update. If field D i Set to "1", then one or more TCI states corresponding to the ith code point of the TCI field may be used for scheduled PDSCH reception.
For example, if the UE obtains the first code point of the TCI field (i.e., code point "00"), the UE may respond to field D 0 The TCI state #w and TCI state #z are determined by being set to "0" for beam update based on L1. For example, if the UE obtains the second code point of the TCI field (i.e., code point "01"), the UE may respond to field D 1 Set to "1" and determine TCI state #x and TCI state #y for scheduled PDSCH reception. If the UE obtains the third code point of the TCI field (i.e., code point "10"), the UE may respond to field D 2 Set to "1" and determine TCI state #x for scheduled PDSCH reception. If the UE obtains the fourth code point of the TCI field (i.e., code point "11"), the UE may respond to field D 3 Set to "1" and determine TCI state #y for scheduled PDSCH reception.
As shown in fig. 34, fig. 34 shows a schematic diagram of an implicit TCI state selection for PDSCH reception based on MAC CE according to one embodiment of the present disclosure. The UE may obtain the code point of the TCI field in DCI # 1. If the code point of the TCI field is set to "01", the UE may apply the TCI state #x and the TCI state #y to one or more DM-RS ports and may receive the PDSCH scheduled by the DCI #1 through the one or more DM-RS ports. If the code point of the TCI field is set to "10", the UE may apply the TCI state #x to one or more DM-RS ports and may receive the PDSCH scheduled by the dci#1 through the one or more DM-RS ports. If the code point of the TCI field is set to "11", the UE may apply the TCI state #y to one or more DM-RS ports and may receive the PDSCH scheduled by the dci#1 through the one or more DM-RS ports.
Fig. 35 shows a schematic diagram of the functionality of the TCI state according to one embodiment of the present disclosure. The TCI state (e.g., TCI state #y) indicated by the TCI field of the scheduled DCI (e.g., dci#1) may be used for scheduled PDSCH reception or for L1-based beam update. In other words, the functionality of TCI state #y may be switched between scheduled PDSCH reception and L1 based beam update. If the TCI state #y is used for scheduled PDSCH reception, the UE may apply the TCI state #y to one or more DM-RS ports and may receive the PDSCH scheduled by DCI #1 through the one or more DM-RS ports. If TCI state #y is used for L1-based beam update, the UE may apply TCI state #y to the channel/signal/CC after a time period (e.g., beamAppTime), which may start from an ACK corresponding to the PDSCH scheduled by dci#1.
Fig. 36 shows a schematic diagram of TCI states for L1-based beam updating according to one embodiment of the present disclosure. The UE may receive dci#1 with a TCI field and a new field (e.g., a functional handover field). The UE may determine functionality of one or more TCI states from the code point of the functionality switch field, where the one or more TCI states may be associated with the code point of the TCI field. If the code point of the functionality switch field is set to "00," the UE may determine that one or more TCI states corresponding to the TCI field are available for L1-based beam update. Thus, the UE may apply one or more TCI states to the channel/signal/CC after a time period (e.g., beamAppTime), where the time period may begin with an ACK corresponding to DCI #1 (or PDSCH scheduled by DCI # 1).
Fig. 37 shows a schematic diagram of TCI states for scheduled PDSCH reception according to one embodiment of the present disclosure. The UE may receive dci#1 with a TCI field and a new field (e.g., a functional handover field). The UE may determine functionality of one or more TCI states from the functionality switch field, where the one or more TCI states may be associated with code points of the TCI field. If the code point of the functionality switch field is set to "01," the UE may determine that one or more TCI states corresponding to the TCI field are available for scheduled PDSCH reception. Thus, the UE may apply one or more TCI states to one or more DM-RS ports and may receive PDSCH scheduled by dci#1 through the one or more DM-RS ports. The UE may not expect the one or more TCI states indicated by the TCI field in DCI #1 to be different from the applied one or more TCI states indicated by the previous DCI.
Fig. 38 shows a schematic diagram of L1-based beam updating according to one embodiment of the present disclosure. Suppose that the UE is served by trp#1 and trp#2 via TCI state #x and TCI state #y, respectively. If the UE moves from the coverage of TCI state #x and TCI state #y to the coverage of TCI state #y only, the UE may receive a scheduled DCI (e.g., dci#1) indicating a TCI state (e.g., TCI state #y) for an L1-based beam update, wherein the L1-based beam update may switch the TCI state applied by the UE from TCI state #x and TCI state #y to TCI state #y. The UE may be at a point in time T 0 Thereafter, TCI state #y is applied, in which time point T 0 May be a time period (e.g., beamAppTime) starting from ACK #1 corresponding to DCI #1. The applied TCI state #y may be used, for example, to receive PDSCH scheduled by dci#2, where dci#2 is later than dci#1.
Fig. 39 shows a schematic diagram of TCI states for scheduled PDSCH reception and L1-based beam update in accordance with one embodiment of the present disclosure. The UE may receive dci#1 with a TCI field and a new field (e.g., a functional handover field). The UE may determine functionality of one or more TCI states from the functionality switch field, where one or more TCI states (e.g., TCI state #y) may be associated with code points of the TCI field. If the code point of the functionality switch field is set to "10", the UE may determine that the TCI state #y corresponding to the TCI field is available for scheduled PDSCH reception and L1-based beam update. The UE may apply the TCI state #y to one or more DM-RS ports and may receive the PDSCH scheduled by the dci#1 through the one or more DM-RS ports. The UE may not expect the one or more TCI states indicated by the TCI field in DCI #1 to be different from the applied one or more TCI states indicated by the previous DCI. On the other hand, the UE may apply TCI state #y to the channel/signal/CC after a time period (e.g., beamAppTime), where the time period may start from an ACK corresponding to dci#1 (or PDSCH scheduled by dci#1).
Fig. 40 shows a table of new fields of DCI according to one embodiment of the present disclosure. The UE may receive DCI with a TCI field and a new field (e.g., a functionality switch field). The UE may determine functionality of one or more TCI states from the functionality switch field, where the one or more TCI states may be associated with code points of the TCI field. If the code point of the functionality switch field is set to "0," the UE may determine that one or more TCI states corresponding to the TCI field are available for L1-based beam update. If the code point of the functionality switch field is set to "1," the UE may determine that one or more TCI states corresponding to the TCI field are available for L1-based beam update and scheduled PDSCH reception.
In one embodiment, the UE may expect the number of applied TCI states indicated by the previous DCI to be equal to two. The UE may not expect the number of applied TCI states indicated by the previous DCI to be equal to one.
FIG. 41 illustrates a schematic diagram of TCI state subset selection in accordance with one embodiment of the present disclosure. The UE may transmit PUCCH with HARQ-ACK corresponding to the scheduled PDSCH according to a spatial setting, where the spatial setting may be provided by one or more fixed TCI states (e.g., TCI state #x and TCI state #y) indicated by the previous DCI. The UE may not transmit PUCCH with HARQ-ACK according to the spatial setup activated by the MAC CE.
In one embodiment, PUCCH corresponds to a scheduled PDSCH before PUCCH, and PDSCH scheduled by dci#1 corresponds to semi-persistent scheduling.
Fig. 42 shows a schematic diagram of flexible TCI state selection for PUCCH transmission according to one embodiment of the present disclosure. For the unified TCI framework, dynamic PUCCH scheduling between the S-TRP scheme and the M-TRP scheme may be supported. The UE may determine or select one or more TCI states for transmitting the PUCCH according to the scheduling DCI (e.g., DCI # 1) and/or one or more TCI states indicated by a previous DCI (e.g., TCI state #x and/or TCI state #y). For example, a first slot level PUCCH transmission occasion may be transmitted by the UE via TCI state #x and a second slot level PUCCH transmission occasion may be transmitted by the UE via TCI state #y. For another example, the first slot level PUCCH transmission occasion and the second slot level PUCCH transmission occasion may be transmitted by the UE via TCI state #x. For another example, the first slot level PUCCH transmission occasion and the second slot level PUCCH transmission occasion may be transmitted by the UE via TCI state #y.
Fig. 43 shows a schematic diagram of flexible TCI state selection for PUCCH transmission according to one embodiment of the present disclosure. For the unified TCI framework, dynamic PUCCH scheduling between the S-TRP scheme and the M-TRP scheme may be supported. The UE may determine or select one or more TCI states for transmitting the PUCCH according to the scheduling DCI (e.g., DCI # 1) and/or one or more TCI states indicated by a previous DCI (e.g., TCI state #x and/or TCI state #y). PUCCH resources may be simultaneously transmitted through two TCI states (e.g., TCI state #x and TCI state #y) having the same time/frequency resource. For example, the first slot level PUCCH transmission occasion may be transmitted by the UE via TCI state #x, TCI state #y, or TCI state #x and TCI state #y.
Fig. 44 and 45 illustrate diagrams of explicit TCI state selection based on code points according to one embodiment of the present disclosure. The code point of the new field (e.g., TCI select field) in DCI #1 received by the UE may be associated with the selection of one or more TCI states indicated by the previous DCI (e.g., by the TCI field in the previous DCI). For example, assume that TCI state #x and TCI state #y are indicated to the UE by the previous DCI. If the TCI selection field is included in DCI #1 received by the UE, the UE may obtain a selection from the TCI selection field and may apply one or more TCI states indicated by the previous DCI to the spatial settings according to the selection. The UE may transmit PUCCH through spatial setup, wherein PUCCH resources may be indicated to the UE through a physical uplink control channel resource indicator (physical uplink control channel resource indicator; PRI) field of dci#1. For example, if the code point of the TCI selection field in dci#1 is "00", the UE may apply TCI state #x and TCI state #y to spatial settings, and may transmit PUCCH indicated by the PRI field according to the spatial settings. If the code point of the TCI selection field in dci#1 is "01", the UE may apply TCI state #x to a spatial setting and may transmit PUCCH indicated by the PRI field according to the spatial setting. If the code point of the TCI selection field in dci#1 is "10", the UE may apply TCI state #y to a spatial setting and may transmit PUCCH indicated by the PRI field according to the spatial setting.
Fig. 46 illustrates a schematic diagram of implicit TCI state selection based on an antenna port field according to one embodiment of the present disclosure. In one embodiment, implicit TCI state selection may be applied in response to the TCI selection field not being included in the scheduling DCI (e.g., dci#1 (format 1_1/1_2)). In particular, the UE may determine one or more TCI states to apply from one or more TCI states indicated by a previous DCI (e.g., by a TCI field in the previous DCI) according to a preconfigured association between the one or more TCI states indicated by the previous DCI and the one or more DM-RS ports. One or more DM-RS ports may be indicated by an antenna port field of dci#1 (format 1_1/1_2). The UE may transmit the PUCCH scheduled by DCI #1 through one or more DM-RS ports (or spatial settings) corresponding to one or more TCI states indicated by the previous DCI. One or more TCI states (or one or more DM-RS ports corresponding to one or more TCI states) indicated by the previous DCI may be applied for DL allocation in a time period starting from the last symbol of the PDCCH. In one embodiment, the pre-configured association may be configured to the UE via an RRC message.
FIG. 47 illustrates a table of preconfigured associations according to one embodiment of the present disclosure. Each of the DM-RS ports indicated by the antenna port field may be associated with one or more TCI states indicated by a previous DCI, as shown in the table. For example, if the value of the antenna port field is "10", the UE may determine from the table that DM-RS port 0 through DM-RS port 3 are associated with a first TCI state (e.g., TCI state #x) indicated by the previous DCI. Thus, the UE may apply the TCI state #x to the DM-RS port 0 to the DM-RS port 3, and may transmit the PUCCH through the DM-RS port 0 to the DM-RS port 3. For another example, if the value of the antenna port field is "14", the UE may determine from the table that DM-RS port 0 through DM-RS port 3 are associated with a second TCI state (e.g., TCI state #y) indicated by the previous DCI. Thus, the UE may apply the TCI state #y to the DM-RS port 0 to the DM-RS port 3, and may transmit the PUCCH through the DM-RS port 0 to the DM-RS port 3. For another example, if the value of the antenna port field is "15", the UE may determine from the table that DM-RS port 0 through DM-RS port 3 are associated with a first TCI state (e.g., TCI state #x) and a second TCI state (e.g., TCI state #y) indicated by the previous DCI. Thus, the UE may apply TCI status #x and TCI status #y to DM-RS ports 0 to 3 and transmit PUCCH through DM-RS ports 0 to 3.
Fig. 48 shows a schematic diagram of implicit TCI state selection embedded in DCI with CRC parity bit scrambling, according to one embodiment of the present disclosure. Fig. 49 shows a schematic diagram of DCI (e.g., format 1_1/1_2) generation according to one embodiment of the present disclosure. In one embodiment, implicit TCI state selection may be applied in response to the TCI selection field not being included in the scheduling DCI (e.g., DCI # 1).
Assuming that the DCI contains bit stream { a 0 ,a 1 ,a 2 ,a 3 ,…,a A-1 }. BS may generate bit stream { a by appending a plurality of CRC parity bits to bit stream { a } 0 ,a 1 ,a 2 ,a 3 ,…,a A-1 Performing CRC attachment on DCI to produce bit stream { b } 0 ,b 1 ,b 2 ,b 3 ,…,b K-1 A plurality of CRC parity bits may include, for example, 24 bits (i.e., CRC length=24). After the CRC attachment, if the unified TCI framework is applicable, the BS may scramble the DCI with the CRC parity bits according to the corresponding RNTI and TCI status selection mask as shown in equation (4) in order to generate the bit stream { c } 0 ,c 1 ,c 2 ,c 3 ,…,c K-1 Bit stream { c }, wherein 0 ,c 1 ,c 2 ,c 3 ,…,c K-1 Is DCI with CRC parity bits scrambled with corresponding RNTI and TCI status selection masks, x rnti,i Is the ith bit of RNTI, and x TS,i The ith bit of the mask is selected for the TCI state. On the other hand, if the unified TCI framework is not applicable, the BS may scramble the DCI with CRC parity bits according to the corresponding RNTI as shown in equation (5) in order to generate the bit stream { c } 0 ,c 1 ,c 2 ,c 3 ,…,c K-1 Bit stream { c }, wherein 0 ,c 1 ,c 2 ,c 3 ,…,c K-1 Is a bit with CRC parity scrambled with a corresponding RNTIDCI of (x) rnti,i The ith bit of RNTI.
After the UE receives DCI (e.g., DCI #1 with DL allocation) from the BS, the UE may perform CRC on the DCI according to the RNTI and/or TCI state selection mask, where the TCI state selection mask corresponds to one or more TCI states indicated by previous DCI. If the unified frame is applicable, the TCI status selection mask is used to perform CRC, and if the unified frame is not applicable, the TCI status mask is not used to perform CRC. The UE may descramble the scrambling bits of dci#1 according to the RNTI and/or TCI status selection mask to obtain DCI with parity bits. After that, the UE may perform CRC on the DCI with the parity bits. If the unified frame applies and the CRC is successful, the UE may apply one or more TCI states corresponding to the TCI state selection mask to the spatial setup and may transmit the PUCCH through the spatial setup, where the PUCCH may be indicated by the PRI field in DCI # 1.
For example, the UE may descramble the scrambling bits of dci#1 according to TCI state selection mask <0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0> to obtain DCI with parity bits. After that, the UE may perform CRC on the DCI with the parity bits. If the CRC is successful, the UE may apply a first TCI state (e.g., TCI state #x) corresponding to TCI state selection mask <0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0> to the spatial setup, and may transmit a PUCCH through the spatial setup, where the PUCCH may be indicated by a PRI field in DCI # 1. For another example, the UE may descramble the scrambling bits of dci#1 according to TCI state selection mask <0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1> to obtain DCI with parity bits. After that, the UE may perform CRC on the DCI with the parity bits. If the CRC is successful, the UE may apply a second TCI state (e.g., TCI state #y) corresponding to TCI state selection mask <0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1> to the spatial setup, and may transmit the PUCCH through the spatial setup, where the PUCCH may be indicated by the PRI field in DCI # 1. For another example, the UE may descramble the scrambling bits of dci#1 according to TCI state selection mask <0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0> to obtain DCI with parity bits. After that, the UE may perform CRC on the DCI with the parity bits. If the CRC is successful, the UE may apply a first TCI state (e.g., TCI state #x) and a second TCI state (e.g., TCI state #y) corresponding to TCI state selection mask <0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0> to the spatial setup, and may transmit the PUCCH through the spatial setup, where the PUCCH may be indicated by a PRI field in DCI#1.
In one embodiment, the association between the TCI state selection mask and the one or more TCI states may be configured to the UE via an RRC message.
Fig. 50 illustrates a schematic diagram of implicit TCI state selection based on TCI fields, according to one embodiment of the present disclosure. In one embodiment, implicit TCI state selection may be applied in response to the TCI selection field not being included in the scheduling DCI (e.g., DCI # 1). In particular, the UE may determine one or more TCI states to apply from one or more TCI states indicated by a previous DCI (e.g., by a TCI field in a previous DCI) according to the TCI field in DCI # 1. The UE may apply the determined one or more TCI states to the spatial setup and may transmit a PUCCH through the spatial setup, where the PUCCH may be indicated by a PRI field in DCI # 1.
Fig. 51 illustrates a schematic diagram of implicit TCI state selection based on predetermined code points of TCI fields, according to one embodiment of the present disclosure. In one embodiment, implicit TCI state selection may be applied in response to the TCI selection field not being included in the scheduling DCI (e.g., dci#1 (format 1_1/1_2)). Assume that TCI state #x and TCI state #y are indicated to the UE by the previous DCI. The UE may obtain a code point for the TCI field in DCI #1, where the code point may be associated with the selection of one TCI state indicated by the previous DCI. If the code point of the TCI field is a predetermined code point "10", the UE may apply a first TCI state (e.g., TCI state #x) indicated by the previous DCI to the spatial setup, and may transmit the PUCCH through the spatial setup, wherein the PUCCH may be indicated by the PRI field in DCI # 1. If the code point of the TCI field is a predetermined code point "11", the UE may apply a second TCI state (e.g., TCI state #y) indicated by the previous DCI to the spatial setup, and may transmit the PUCCH through the spatial setup, wherein the PUCCH may be indicated by the PRI field in dci#1.
In one embodiment, the association between the predetermined code point of the TCI field and the selection of the TCI state indicated by the previous DCI may be configured to the UE by an RRC message.
Fig. 52 illustrates a schematic diagram of implicit TCI state selection based on predetermined code points of TCI fields, according to one embodiment of the present disclosure. In one embodiment, implicit TCI state selection may be applied in response to the TCI selection field not being included in the scheduling DCI (e.g., dci#1 (format 1_1/1_2)). Assume that TCI state #x and TCI state #y are indicated to the UE by the previous DCI. The UE may obtain a code point for the TCI field in DCI #1, where the code point may be associated with a selection of one or more TCI states indicated by a previous DCI.
If the code point of the TCI field is a predetermined code point, the UE may determine or select one TCI state corresponding to the predetermined code point from one or more TCI states indicated by the previous DCI. The UE may apply the selected TCI state to the spatial setup and may transmit the PUCCH through the spatial setup, where the PUCCH may be indicated by the PRI field in DCI # 1. If the code point of the TCI field is not a predetermined code point, the UE may apply one or more TCI states indicated by the previous DCI to the spatial setup, and may transmit a PUCCH through the spatial setup, wherein the PUCCH may be indicated by the PRI field in DCI # 1. In one embodiment, the association between the predetermined code point of the TCI field and the selection of the TCI state indicated by the previous DCI may be configured to the UE by an RRC message.
For example, the predetermined code point of the TCI field may include a predetermined code point "10" and a predetermined code point "11". If the code point of the TCI field is a predetermined code point "10", the UE may apply a first TCI state (e.g., TCI state #x) indicated by the previous DCI to the spatial setup, and may transmit the PUCCH through the spatial setup, wherein the PUCCH may be indicated by the PRI field in DCI # 1. If the code point of the TCI field is a predetermined code point "11", the UE may apply a second TCI state (e.g., TCI state #y) indicated by the previous DCI to the spatial setup, and may transmit the PUCCH through the spatial setup, wherein the PUCCH may be indicated by the PRI field in dci#1. If the code point of the TCI field is a code point other than the predetermined code point "10" and code point "11", the UE may apply the first TCI state and the second TCI state (e.g., TCI state #x and TCI state #y) indicated by the previous DCI to the spatial setup, and may transmit the PUCCH through the spatial setup, wherein the PUCCH may be indicated by the PRI field in DCI # 1.
Fig. 53 illustrates a schematic diagram of MAC CE-based implicit TCI state selection in accordance with one embodiment of the present disclosure. In one embodiment, implicit TCI state selection may be applied in response to the TCI selection field not being included in the scheduling DCI (e.g., dci#1 (format 1_1/1_2)). Assume that TCI state #x and TCI state #y are indicated to the UE by the previous DCI. The UE may obtain a code point for the TCI field in DCI #1, where the code point may be associated with a selection of one or more TCI states indicated by a previous DCI. The functionality of the selected TCI state may be determined by the UE from the MAC CE. Fig. 54 illustrates a table of associations between fields in a MAC CE and TCI fields in DCI (e.g., DCI # 1) according to one embodiment of the present disclosure.
The MAC CE may contain field C i And corresponding field D i . The field Ci may be associated with a first TCI state (e.g., TCI state #w, TCI state #x, or TCI state #y as shown in the table) preconfigured to the UE, and may indicate whether an octet containing a second TCI state (e.g., TCI state #z or TCI state #y as shown in the table) preconfigured to the UE is present in the field D of the MAC CE i Where i may be the index of the code point of the TCI field. If field C i Set to "0", then the octet containing the second TCI state may not be present in field D of the MAC CE i Is a kind of medium. If field C i Set to "1", then an octet containing the second TCI state may be present in field D of the MAC CE i Is a kind of medium. Field D i The functionality of the ith code point of the TCI field may be indicated. If field D i Set to "0", then one or more TCI states corresponding to the ith code point of the TCI field are availableAnd updating the beam based on L1. If field D i Set to "1", then one or more TCI states corresponding to the i-th code point of the TCI field may be used for PUCCH transmission, where PUCCH transmission may be indicated by the PRI field of dci#1.
For example, regarding the code point of the TCI field corresponding to index 0 (i.e., code point "00"), the UE may respond to field D 0 The TCI state #w and TCI state #z are determined by being set to "0" for beam update based on L1. Regarding the code point of the TCI field corresponding to index 1 (i.e., code point "01"), the UE may respond to field D 1 Set to "1" and determine TCI state #x and TCI state #y for PUCCH transmission. Regarding the code point of the TCI field corresponding to index 2 (i.e., code point "10"), the UE may respond to field D 2 Set to "1" and determine TCI state #x for PUCCH transmission. Regarding the code point of the TCI field corresponding to index 3 (i.e., code point "11"), the UE may respond to field D 3 Set to "1" and determine TCI state #y for PUCCH transmission.
Fig. 55 illustrates a schematic diagram of PRI field-based implicit TCI state selection in accordance with one embodiment of the present disclosure. Fig. 56 illustrates a table of associations between TCI fields, PUCCH resources indicated by PRI fields, and TCI states applied to PUCCH transmissions, according to one embodiment of the present disclosure. In one embodiment, implicit TCI state selection may be applied in response to the TCI selection field not being included in the scheduling DCI (e.g., dci#1 (format 1_1/1_2)). Assume that TCI state #x and TCI state #y are indicated to the UE by the previous DCI. The UE may obtain a code point for the TCI field in DCI #1, where the code point may be associated with a selection of one or more TCI states indicated by a previous DCI. One or more TCI states corresponding to code points may be applied by the UE to reception of PDSCH scheduled by dci#1. One or more TCI states applied to the PDSCH may also be applied to transmission of PUCCH with HARQ-ACK corresponding to the PDSCH.
Specifically, a table of associations between the TCI field in dci#1, the PUCCH resources indicated by the PRI field in dci#1, and one or more TCI states applied to PUCCH transmissions (e.g., a table as illustrated in fig. 56) may be preconfigured to the UE via an RRC message. After the UE receives the DCI #1,the UE may determine the selection of one or more TCI states indicated by the previous DCI from a table associated with the TCI field and the PRI field in DCI # 1. The UE may obtain a spatial setting of the PUCCH from the selection and may transmit the PUCCH according to the spatial setting. For example, if the code point of the TCI field is set to "000", the UE may determine that the first TCI state indicated by the previous DCI is applied to PUCCH resource #a 0 Wherein PUCCH resource #A 0 May be one of a plurality of PUCCH resources indicated by the PRI field in dci#1. The UE may obtain a spatial setting corresponding to the first TCI state and may transmit the allocation to PUCCH resource #a according to the spatial setting 0 Is a data of (a) a data of (b). For another example, if the code point of the TCI field is set to "001", the UE may determine that the second TCI state indicated by the previous DCI is applied to PUCCH resource #a 1 Wherein PUCCH resource #A 1 May be one of a plurality of PUCCH resources indicated by the PRI field in dci#1. The UE may obtain a spatial setting corresponding to the second TCI state and may transmit the allocation to PUCCH resource #a according to the spatial setting 1 Is a data of (a) a data of (b).
Fig. 57 shows a schematic diagram of the functionality of the TCI state according to one embodiment of the present disclosure. The TCI state indicated by the TCI field of the scheduled DCI (e.g., dci#1) may be used for PUCCH transmission indicated by the PRI field of dci#1 or for L1-based beam update. In other words, the functionality of the TCI state may be switched between PUCCH transmission and L1 based beam update. If the TCI state is used for PUCCH transmission, the UE may apply the TCI state to spatial setup and may transmit PUCCH through the spatial setup. If the TCI state is used for L1-based beam update, the UE may apply the TCI state to the channel/signal/CC after a time period (e.g., time for beam application). The UE may not expect the one or more TCI states indicated by the TCI field in DCI #1 to be different from the applied one or more TCI states indicated by the previous DCI.
The UE may receive dci#1 with a TCI field and a new field (e.g., a functional handover field). The UE may determine functionality of one or more TCI states from the code point of the functionality switch field, where the one or more TCI states may be associated with the code point of the TCI field. If the code point of the functionality switch field is set to "00," the UE may determine that one or more TCI states corresponding to the TCI field are available for L1-based beam update. Thus, the UE may apply one or more TCI states to the channel/signal/CC after a time period. If the code point of the functionality switch field is set to "01", the UE may determine that one or more TCI states corresponding to the TCI field are available for PUCCH transmission indicated by the PRI field in dci#1. Thus, the UE may apply one or more TCI states to the spatial setup and may transmit PUCCH through the spatial setup. If the code point of the functional handover field is set to "10", the UE may determine that one or more TCI states corresponding to the TCI field are available for PUCCH transmission and L1-based beam update.
Fig. 58 shows a schematic diagram of implicit TCI state determination based on one or more TCI states applied to a scheduled PDSCH in accordance with an embodiment of the present disclosure. In one embodiment, the implicit TCI status determination may be applied in response to the TCI selection field not being included in the scheduling DCI (e.g., dci#1 (format 1_1/1_2)). Assume that one or more TCI states (e.g., TCI state #x or TCI state #y) are applied by the UE for PDSCH reception. The UE may apply one or more TCI states to the spatial setup and may transmit a PUCCH through the spatial setup, where the PUCCH may correspond to a scheduled PDSCH preceding the PUCCH. PDSCH may correspond to semi-persistent scheduling.
FIG. 59 illustrates a schematic diagram of a conflict of one or more TCI states, according to one embodiment of the disclosure. Suppose that the UE is from time point T 0 Application of the TCI state #x and TCI state #y previously indicated by dci#1 is started. The UE may determine a time offset between reception of dci#2 and PDSCH scheduled by dci#2 from dci#2. If the time offset is less than a threshold (e.g., time for decoding DCI # 2), the UE may apply one or more default TCI states to one or more DM-RS ports, where the one or more DM-RS ports may be quasi co-located with one or more reference signals in terms of one or more quasi co-location parameters. The UE may receive PDSCH scheduled by dci#2 through one or more DM-RS ports.
In one embodiment, the UE may obtain a list of multiple code points of the TCI field from, for example, a MAC CE, wherein each of the multiple code points may indicate two different TCI states. For example, if the code point of the TCI field is set to "0," the code point may indicate two different TCI states including TCI state #a and TCI state #b. If the code point of the TCI field is set to "1," the code point may indicate two different TCI states including TCI state #x and TCI state #y. The UE may determine that the one or more default TCI states may be TCI states corresponding to a lowest code point among a plurality of code points on the list. For example, the UE may determine that the one or more default TCI states may be TCI state #a and TCI state #b corresponding to code point "0". Since the default TCI state #a and the default TCI state #b are different from the TCI state #x and the TCI state #y previously indicated by the dci#1, collision for PDSCH reception may occur.
Fig. 60 illustrates a schematic diagram of PDSCH reception based on one or more default TCI states, according to one embodiment of the present disclosure. Suppose that the UE is from time point T 0 Application of the TCI state #x and TCI state #y previously indicated by dci#1 is started. The UE may determine a time offset between reception of dci#2 and PDSCH scheduled by dci#2 from dci#2. If the time offset is less than a threshold (e.g., time for decoding DCI # 2), the UE may apply one or more default TCI states to one or more DM-RS ports, where the one or more DM-RS ports may be quasi co-located with one or more reference signals in terms of one or more quasi co-location parameters. The UE may receive PDSCH scheduled by dci#2 through one or more DM-RS ports.
In one embodiment, the one or more default TCI states may be TCI states indicated by a previous DCI (e.g., DCI # 1) or applied TCI states of a unified TCI framework (i.e., TCI states activated when a UE receives a PDSCH scheduled by DCI # 2).
In one embodiment, multiple IDs of CORESET may be configured to the UE. The one or more default TCI states may be active TCI states corresponding to the CORESET having the lowest ID of the CORESET, where CORESET may be the CORESET for the most recent slot of PDSCH reception.
The default TCI state may be used by the UE for a-CSI-RS reception. In one embodiment, the default TCI state may be the TCI state indicated by the previous DCI (e.g., DCI # 1) or the applied TCI state of the unified TCI framework. In one embodiment, multiple IDs of CORESET may be configured to the UE. The default TCI state may be an active TCI state corresponding to the CORESET having the lowest ID of the CORESET, where CORESET may be the CORESET of the latest slot for PDSCH reception. If there are two active TCI states corresponding to CORESET with the lowest ID, then the UE may use one of the two active TCI states for A-CSI-RS reception.
Fig. 61 shows a flowchart of a method for PDSCH reception according to one embodiment of the present disclosure. In step S611, the first downlink control information is received. In step S612, a code point is obtained from the first field in response to the first field being included in the first downlink control information, wherein the code point is associated with a selection of the at least one transmission configuration indicator state. In step S613, a physical downlink shared channel is received according to the first downlink control information.
Fig. 62 shows a flowchart of a method for PUCCH transmission according to one embodiment of the present disclosure. In step S621, first downlink control information is received. In step S622, in response to the first field being included in the first downlink control information, a code point is obtained from the first field, wherein the code point is associated with a selection of the at least one transmission configuration indicator state. In step S623, a physical uplink control channel is transmitted according to the first downlink control information.
Fig. 63 shows a schematic diagram of a communication device 100 according to one embodiment of the present disclosure, wherein the communication device 100 may comprise, for example, a BS or a UE. The method as shown in fig. 1-62 may be implemented by a communication device 100. The communication device 100 may include a processor 110, a storage medium 120, and a transceiver 130.
The processor 110 is, for example, a graphics processing unit (graphics processing unit; GPU), an image signal processor (image signal processor; ISP), an image processing unit (image processing unit; IPU), a central processing unit (central processing unit; CPU), another programmable general purpose or special purpose micro control unit (micro control unit; MCU), a microprocessor, a digital signal processor (digital signal processor; DSP), a programmable controller, a special application specific integrated circuit (application specific integrated circuit; ASIC), an arithmetic logic unit (arithmetic logic unit; ALU), a complex programmable logic device (complex programmable logic device; CPLD), a field programmable gate array (field programmable gate array; FPGA) or other similar components, or a combination of the foregoing components. The processor 110 may be coupled to a storage medium 120 and a transceiver 130, and may access and execute a plurality of modules and various applications stored in the storage medium 120.
The storage medium 120 is, for example, any type of fixed or removable random access memory (random access memory; RAM), read-only memory (ROM), flash memory, hard Disk Drive (HDD), solid state hard disk (solid state drive; SSD), or the like, or a combination of the foregoing, and is configured to store a plurality of modules or various applications that are executable by the processor 110.
Transceiver 130 may be configured to transmit or receive wired/wireless signals. Transceiver 130 may also perform operations such as low noise amplification, impedance matching, frequency mixing, up-or down-conversion, filtering, amplification, and the like. Transceiver 130 may include one or more digital-to-analog (D/a) converters or analog-to-digital (a/D) converters configured to convert from an analog signal format to a digital signal format during uplink signal processing and from a digital signal format to an analog signal format during downlink signal processing. Transceiver 130 may include an antenna array that may include one or more antennas that transmit and receive omni-directional antenna beams or directional antennas.
In summary, the present disclosure provides a method of implicitly or explicitly instructing a UE to apply one or more specific TCI states for PDSCH reception or PUCCH transmission. The TCI selection field may be included in DCI received by the UE, and the UE may determine a TCI state to be applied according to the TCI selection field. If the TCI selection field is not included in the received DCI, the UE may determine the TCI state to apply according to an implicit indication, including but not limited to: the TCI field in the DCI, the antenna port field in the DCI, the CRC check result of the DCI, an indication from a previous DCI, a default TCI, or a set of control resources configured to the UE. Since the base station may indicate the TCI state to be applied to the UE without sending additional signaling to the UE, signaling overhead between the base station and the UE may be reduced.

Claims (41)

1. A method for physical downlink shared channel reception, adapted for a communication device, the method comprising:
receiving first downlink control information;
obtaining a code point from a first field in response to the first field being included in the first downlink control information, wherein the code point is associated with a selection of at least one transmission configuration indicator state; and
and receiving the physical downlink shared channel according to the first downlink control information.
2. The method for physical downlink shared channel reception according to claim 1, wherein the step of receiving the physical downlink shared channel according to the first downlink control information comprises:
responsive to the code point being a first code point, applying a first transmission configuration indicator state of the at least one transmission configuration indicator state to a demodulation reference signal port according to the selection; and
the physical downlink shared channel is received through the demodulation reference signal port.
3. The method for physical downlink shared channel reception according to claim 2, wherein the step of receiving the physical downlink shared channel according to the first downlink control information comprises:
Responsive to the code point being a second code point, applying a second one of the at least one transmission configuration indicator states to the demodulation reference signal port according to the selection; and
the physical downlink shared channel is received through the demodulation reference signal port.
4. The method for physical downlink shared channel reception according to claim 1, wherein the step of receiving the physical downlink shared channel according to the first downlink control information comprises:
responsive to the code point being a third code point, applying a first transmission configuration indicator state and a second transmission configuration indicator state of the at least one transmission configuration indicator state to a demodulation reference signal port according to the selection; and
the physical downlink shared channel is received through the demodulation reference signal port.
5. The method for physical downlink shared channel reception according to claim 1, wherein the at least one transmission configuration indicator status is indicated to the communication device by a transmission configuration indicator field.
6. The method for physical downlink shared channel reception as recited in claim 5, further comprising:
Second downlink control information is received, wherein the at least one transmission configuration indicator status is indicated by the transmission configuration indicator field of the second downlink control information.
7. The method for physical downlink shared channel reception as recited in claim 6, wherein
The reception of the second downlink control information precedes the reception of the first downlink control information.
8. The method for physical downlink shared channel reception as recited in claim 5, further comprising:
determining the at least one transmission configuration indicator state from the transmission configuration indicator field in response to the first field not being included in the first downlink control information;
applying the at least one transmission configuration indicator state to a demodulation reference signal port; and
the physical downlink shared channel is received through the demodulation reference signal port.
9. The method for physical downlink shared channel reception as recited in claim 5, further comprising:
applying a first transmission configuration indicator state of the at least one transmission configuration indicator state to a demodulation reference signal port in response to the first field not being included in the first downlink control information; and
The physical downlink shared channel is received through the demodulation reference signal port.
10. The method for physical downlink shared channel reception as recited in claim 5, further comprising:
applying a first transmission configuration indicator state and a second transmission configuration indicator state of the at least one transmission configuration indicator state to a demodulation reference signal port in response to the first field not being included in the first downlink control information; and
the physical downlink shared channel is received through the demodulation reference signal port.
11. The method for physical downlink shared channel reception of claim 1, further comprising:
a second selection of the at least one transmission configuration indicator state is determined from a physical uplink control channel resource indicator field of the first downlink control information.
12. The method for physical downlink shared channel reception as recited in claim 11, further comprising:
obtaining a spatial setting of a physical uplink control channel from the second selection; and
and transmitting the physical uplink control channel according to the space setting.
13. The method for physical downlink shared channel reception as recited in claim 12, wherein
The physical uplink control channel is transmitted with a hybrid automatic repeat request acknowledgement corresponding to the physical downlink shared channel.
14. The method for physical downlink shared channel reception according to claim 1, wherein the step of receiving the physical downlink shared channel according to the first downlink control information comprises:
determining a time offset between the first downlink control information and the physical downlink shared channel according to the first downlink control information;
determining, in response to the time offset being less than a threshold, that a demodulation reference signal port of the physical downlink shared channel is quasi co-located with at least one reference signal in terms of at least one quasi co-located parameter, wherein the quasi co-located parameter is associated with a default transmission configuration indicator state; and
the physical downlink shared channel is received through the demodulation reference signal port.
15. The method for physical downlink shared channel reception of claim 14, further comprising:
obtaining a list of a plurality of code points from a medium access control element, wherein each of the plurality of code points indicates two different transmission configuration indicator states, wherein
The default transmission configuration indicator state is a transmission configuration indicator state corresponding to a lowest code point among the plurality of code points.
16. The method for physical downlink shared channel reception as recited in claim 14, wherein
The default transmission configuration indicator state is the at least one transmission configuration indicator state.
17. The method for physical downlink shared channel reception of claim 16, further comprising:
second downlink control information is received, wherein the default transmission configuration indicator state is the at least one transmission configuration indicator state indicated by the second downlink control information.
18. The method for physical downlink shared channel reception according to claim 14, wherein the default transmission configuration indicator state is a transmission configuration indicator state that is activated when the physical downlink shared channel is received.
19. The method for physical downlink shared channel reception according to claim 14, wherein the default transmission configuration indicator state is a transmission configuration indicator state corresponding to a set of control resources configured to the communication device.
20. The method for physical downlink shared channel reception of claim 1, further comprising:
determining a first transmission configuration indicator state of the at least one transmission configuration indicator state according to a pre-configured association between the first transmission configuration indicator state and a demodulation reference signal port in response to the first field not being included in the first downlink control information, wherein the demodulation reference signal port is indicated by an antenna port field of the first downlink control information; and
the physical downlink shared channel is received through the demodulation reference signal port.
21. The method for physical downlink shared channel reception of claim 1, further comprising:
performing a cyclic redundancy check on the first downlink control information by a first mask in response to the first field not being included in the first downlink control information, wherein the first mask corresponds to a first transmission configuration indicator state of the at least one transmission configuration indicator state;
applying the first transmission configuration indicator state to a demodulation reference signal port in response to the cyclic redundancy check being successful; and
The physical downlink shared channel is received through the demodulation reference signal port.
22. The method for physical downlink shared channel reception as recited in claim 21, wherein the step of performing the cyclic redundancy check on the first downlink control information with the first mask comprises:
descrambling the scrambled bits of the first downlink control information to obtain the first downlink control information with parity bits; and
the cyclic redundancy check is performed on the first downlink control information having the parity bit.
23. The method for physical downlink shared channel reception according to claim 1, wherein the physical downlink shared channel corresponds to semi-persistent scheduling.
24. A method for physical uplink control channel transmission, adapted for a communication device, the method comprising:
receiving first downlink control information;
obtaining a code point from a first field in response to the first field being included in the first downlink control information, wherein the code point is associated with a selection of at least one transmission configuration indicator state; and
And transmitting the physical uplink control channel according to the first downlink control information.
25. The method for physical uplink control channel transmission according to claim 24, wherein the step of transmitting the physical uplink control channel according to the first downlink control information comprises:
responsive to the code point being a first code point, applying a first transmission configuration indicator state of the at least one transmission configuration indicator state to a spatial setting according to the selection; and
transmitting the physical uplink control channel through the spatial setup.
26. The method for physical uplink control channel transmission according to claim 25, wherein the step of transmitting the physical uplink control channel according to the first downlink control information comprises:
responsive to the code point being a second code point, applying a second one of the at least one transmission configuration indicator states to the spatial setting according to the selection; and
transmitting the physical uplink control channel through the spatial setup.
27. The method for physical uplink control channel transmission according to claim 24, wherein the step of transmitting the physical uplink control channel according to the first downlink control information comprises:
Responsive to the code point being a second code point, applying a first transmission configuration indicator state and a second transmission configuration indicator state of the at least one transmission configuration indicator state to a spatial setting according to the selection; and
transmitting the physical uplink control channel through the spatial setup.
28. The method for physical uplink control channel transmission of claim 24, wherein
The at least one transmission configuration indicator state is indicated to the communication device by a transmission configuration indicator field.
29. The method for physical uplink control channel transmission of claim 28, further comprising:
second downlink control information is received, wherein the at least one transmission configuration indicator status is indicated to the communication device by the transmission configuration indicator field through the second downlink control information.
30. The method for physical uplink control channel transmission of claim 24, further comprising:
determining a first transmission configuration indicator state of the at least one transmission configuration indicator state according to a pre-configured association between the first transmission configuration indicator state and a demodulation reference signal port in response to the first field not being included in the first downlink control information, wherein the demodulation reference signal port is indicated by an antenna port field of the first downlink control information; and
Transmitting the physical uplink control channel through the first transmission configuration indicator state.
31. The method for physical uplink control channel transmission of claim 24, further comprising:
performing a cyclic redundancy check on the first downlink control information by a first mask in response to the first field not being included in the first downlink control information, wherein the first mask corresponds to a first transmission configuration indicator state of the at least one transmission configuration indicator state;
responsive to the cyclic redundancy check being successful, applying the first transmission configuration indicator state to a spatial setting; and
transmitting the physical uplink control channel through the spatial setup.
32. The method for physical uplink control channel transmission according to claim 31, wherein the step of performing the cyclic redundancy check on the first downlink control information with the first mask comprises:
descrambling the scrambled bits of the first downlink control information to obtain the first downlink control information with parity bits; and
the cyclic redundancy check is performed on the first downlink control information having the parity bit.
33. The method for physical uplink control channel transmission of claim 24, further comprising:
determining the at least one transmission configuration indicator state from a transmission configuration indicator field in response to the first field not being included in the first downlink control information;
applying a first transmission configuration indicator state to the spatial setting; and
transmitting the physical uplink control channel through the spatial setup.
34. The method for physical uplink control channel transmission of claim 24, further comprising:
responsive to the first field not being included in the first downlink control information, applying a first transmission configuration indicator state of the at least one transmission configuration indicator state to a spatial setting; and
transmitting the physical uplink control channel through the spatial setup.
35. The method for physical uplink control channel transmission of claim 24, further comprising:
responsive to the first field not being included in the first downlink control information, applying a first transmission configuration indicator state and a second transmission configuration indicator state of the at least one transmission configuration indicator state to a spatial setting; and
Transmitting the physical uplink control channel through the spatial setup.
36. The method for physical uplink control channel transmission of claim 24, further comprising:
the selection of the at least one transmission configuration indicator state is determined from a physical uplink control channel resource indicator field of the first downlink control information in response to the first field not being included in the first downlink control information.
37. The method for physical uplink control channel transmission of claim 36, further comprising:
obtaining a spatial setting of a physical uplink control channel from the at least one transmission configuration indicator state; and
and transmitting the physical uplink control channel according to the space setting.
38. The method for physical uplink control channel transmission of claim 24, further comprising:
a physical downlink shared channel is received in accordance with the first downlink control information prior to transmission of the physical uplink control channel.
39. The method for physical uplink control channel transmission of claim 38, wherein the physical downlink shared channel corresponds to semi-persistent scheduling.
40. A user equipment for physical downlink shared channel reception, comprising:
a transceiver; and
a processor coupled to the transceiver, wherein the processor is configured to:
receiving first downlink control information via the transceiver;
obtaining a code point from a first field in response to the first field being included in the first downlink control information, wherein the code point is associated with a selection of at least one transmission configuration indicator state; and
the physical downlink shared channel is received via the transceiver according to the first downlink control information.
41. A user equipment for physical uplink control channel transmission, comprising:
a transceiver; and
a processor coupled to the transceiver, wherein the processor is configured to:
receiving first downlink control information via the transceiver;
obtaining a code point from a first field in response to the first field being included in the first downlink control information, wherein the code point is associated with a selection of at least one transmission configuration indicator state; and
the physical uplink control channel is transmitted via the transceiver according to the first downlink control information.
CN202310490691.7A 2022-05-05 2023-05-04 Method and user equipment for physical channel reception and physical channel transmission Pending CN117015049A (en)

Applications Claiming Priority (3)

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US63/338,460 2022-05-05
US18/302,797 US20230362930A1 (en) 2022-05-05 2023-04-19 Method and user equipment for reception of physical downlink shared channel and transmission of physical uplink control channel
US18/302,797 2023-04-19

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CN117015049A true CN117015049A (en) 2023-11-07

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