Channel status information transmission
AI/ML-based models optimize CSI transmission resources to reduce overhead and enhance resource utilization in wireless communications systems.
Patent Information
- Application Number
- PCT/CN2024/141149
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-10-16
AI Technical Summary
The overhead of channel status information (CSI) transmission in wireless communications systems is high, necessitating enhancements to reduce resource utilization.
Implementing artificial intelligence/machine learning (AI/ML)-based models for determining transmission resources of uplink control information (UCI) associated with CSI, including CSI generation and joint source and channel coding, to optimize resource allocation and reduce overhead.
The AI/ML-based approach reduces CSI transmission overhead by efficiently determining and utilizing transmission resources, thereby improving resource utilization and communication efficiency.
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Figure CN2024141149_16102025_PF_FP_ABST
Abstract
Description
CHANNEL STATUS INFORMATION TRANSMISSIONTECHNICAL FIELD
[0001] The present disclosure relates to wireless communications, and more specifically to a user equipment (UE) , a base station, a core network entity, processors, and methods for channel status information (CSI) transmission.BACKGROUND
[0002] A wireless communications system may include one or multiple network communication devices, such as base stations, which may be otherwise known as an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology. Each network communication devices, such as a base station may support wireless communications for one or multiple user communication devices, which may be otherwise known as user equipment (UE) , or other suitable terminology. The wireless communications system may support wireless communications with one or multiple user communication devices by utilizing resources of the wireless communication system (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) . Additionally, the wireless communications system may support wireless communications across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) radio access technology, among other suitable radio access technologies beyond 5G (e.g., sixth generation (6G) ) .
[0003] CSI is determined by the UE based on the downlink channel state information reference signal (CSI-RS) and is used to indicate the gNB about the downlink channel conditions, aiding in link adaptation. CSI may be transmitted as part of uplink control information (UCI) . UCI may be transmitted from the UE to the gNB using either the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUSCH) . Considering the overhead of CSI is very large, enhancements on CSI transmission are still needed.SUMMARY
[0004] The present disclosure relates to methods, apparatuses, and systems that support CSI transmission. By determining a transmission resource for UCI associated with at least one CSI generated by an artificial intelligence / machine learning (AI / ML) -based model, a scheme for AI / ML-based CSI transmission is supported, thus reducing the resource overhead for CSI transmission.
[0005] In a first aspect of the solution, a UE determines a transmission resource for uplink control information (UCI) , wherein the UCI is associated with at least one first channel status information (CSI) generated by a first artificial intelligence / machine learning (AI / ML) -based model. The UE transmits, to a network entity, the UCI on the transmission resource.
[0006] In some implementations of the method and apparatuses described herein, the first AI / ML-based model comprises at least one of the following: a CSI generation model for CSI compression; or a CSI generation model for joint source and channel coding (JSCC) .
[0007] In some implementations of the method and apparatuses described herein, the transmission resource comprises one of the following: a physical uplink control channel (PUCCH) transmission resource; or a physical uplink shared channel (PUSCH) transmission resource.
[0008] Some implementations of the method and apparatuses described herein may further include: determining first at least one transmission resource for the at least one first CSI; determining second at least one transmission resource for at least one second UCI, wherein the first at least one transmission resource is overlapped with the second at least one transmission resource; and determining the UCI based on the at least one first CSI and the at least one second UCI, wherein the at least one second UCI comprises at least one of the following: hybrid automatic repeat request-acknowledgement (HARQ-ACK) information; scheduling request (SR) information; or at least one second CSI.
[0009] In some implementations of the method and apparatuses described herein, the UCI comprises: the at least one first CSI, and one or more second UCIs among the at least one second UCI excluding the at least one second CSI.
[0010] In some implementations of the method and apparatuses described herein, the at least one second CSI and the at least one first CSI are associated with different CSI quantities. The UCI comprises: the at least one first CSI, and the at least one second UCI.
[0011] In some implementations of the method and apparatuses described herein, one or more second CSIs among the at least one second CSI and one or more first CSIs among the at least one first CSI are associated with the same CSI quantities. The UCI comprises one of the following: the at least one first CSI and the at least one second UCI excluding the one or more second CSIs; or the at least one second UCI and the at least one first CSI excluding the one or more first CSIs.
[0012] In some implementations of the method and apparatuses described herein, the UCI comprises one of the following: the at least one first CSI; or the at least one second UCI.
[0013] Some implementations of the method and apparatuses described herein may further include: generating at least one further second CSI based on channel information associated with the at least one first CSI, wherein the UCI comprises the at least one second UCI and the generated at least one further second CSI.
[0014] In some implementations of the method and apparatuses described herein, the transmission resource for the UCI is a PUCCH resource determined at least based on a first parameter for the at least one first CSI.
[0015] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI. Some implementations of the method and apparatuses described herein may further include one of the following: determining a resource set based on the first parameter for the at least one first CSI, wherein the transmission resource is comprised in the resource set; or determining the transmission resource based on the first parameter for the at least one first CSI.
[0016] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI and one or more second UCIs. Some implementations of the method and apparatuses described herein may further include one of the following: determining a resource set based on the first parameter for the at least one first CSI and an information bit length of the one or more second UCIs, wherein the transmission resource is comprised in the resource set; or determining the transmission resource based on the first parameter for the at least one first CSI and an information bit length of the one or more second UCIs; or determining a resource set group based on the first parameter for the at least one first CSI, and determining a resource set among the resource set group based on an information bit length of the one or more second UCIs, wherein the transmission resource is comprised in the resource set; or determining a resource set group based on an information bit length of the one or more second UCIs, and determining a resource set among the resource set group based on the first parameter for the at least one first CSI, wherein the transmission resource is comprised in the resource set.
[0017] Some implementations of the method and apparatuses described herein may further include: determining at least one PUCCH resource set for transmissions of first CSIs, wherein the transmission resource is comprised in the at least one PUCCH resource set, and the UCI comprises the at least one first CSI.
[0018] In some implementations of the method and apparatuses described herein, the at least one PUCCH resource set is associated with one of the following: transmissions of first CSIs only; or transmissions of first CSIs multiplexed with transmissions second UCIs; or transmissions of first CSIs.
[0019] Some implementations of the method and apparatuses described herein may further include: encode each part among at least one part of channel information separately based on the first AI / ML-based model, wherein the at least one first CSI comprises at least one encoded part of the channel information.
[0020] In some implementations of the method and apparatuses described herein, each part comprises one of the following: respective channel information for a subband; respective channel information for a CSI report; or respective channel information for a sub-CSI report configuration.
[0021] Some implementations of the method and apparatuses described herein may further include: determining a rate matching output sequence length for the at least one first CSI; and performing a rate matching on at least one encoded output of the first AI / ML-based model based on the rate matching output sequence length.
[0022] Some implementations of the method and apparatuses described herein may further include: determining a rate matching output sequence length for the at least one first CSI; and determining a number of coded bits associated with at least one encoded output of the first AI / ML-based model based on the rate matching output sequence length, wherein the number of coded bits associated with each encoded output is equal to the rate matching output sequence length divided by the number of first CSIs among the at least one first CSI.
[0023] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI, and the transmission resource comprises a PUCCH resource, wherein the rate matching output sequence length for the at least one first CSI is determined based on a size of the PUCCH resource.
[0024] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI, and the transmission resource comprises a PUCCH resource, wherein the rate matching output sequence length for the at least one first CSI is determined based on a size of the PUCCH resource and a modulation order of the transmission resource.
[0025] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI and one or more second UCIs, the transmission resource comprises a PUCCH resource, and the rate matching output sequence length for the at least one first CSI is a first rate matching output sequence length. Some implementations of the method and apparatuses described herein may further include: determining a second rate matching output sequence length for the one or more second UCIs based on a size of the PUCCH resource and the first rate matching output sequence length.
[0026] In some implementations of the method and apparatuses described herein, the first rate matching output sequence length is determined based on: a size of the PUCCH resource, a configured maximum PUCCH coding rate, a first parameter for the at least one first CSI, and a modulation order of the PUCCH resource.
[0027] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI and one or more second UCIs, the transmission resource comprises a PUCCH resource, and the rate matching output sequence length for the at least one first CSI is a first rate matching output sequence length. Some implementations of the method and apparatuses described herein may further include: determining a second rate matching output sequence length for the one or more second UCIs, wherein the first rate matching output sequence length is determined based on a size of the PUCCH resource and the second rate matching output sequence length.
[0028] In some implementations of the method and apparatuses described herein, the first rate matching output sequence length is determined based on: a size of the PUCCH resource, the second rate matching output sequence length, and a modulation order of the PUCCH resource.
[0029] In some implementations of the method and apparatuses described herein, the second rate matching output sequence length is determined based on: a size of the PUCCH resource, a configured maximum PUCCH coding rate, an information bit length of the one or more second UCIs, a number of cyclic redundancy check (CRC) bits for encoding information for the one or more second UCIs, and a modulation order of the PUCCH resource.
[0030] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI, and the transmission resource comprises a PUSCH resource, wherein the rate matching output sequence length for the at least one first CSI is determined based on a number of coded modulation symbols for the at least one first CSI.
[0031] In some implementations of the method and apparatuses described herein, the number of coded modulation symbols for the at least one first CSI is determined based on: a first parameter for the at least one first CSI; a higher layer parameter scaling associated with first CSI transmission; and a beta offset associated with first CSI transmission.
[0032] Some implementations of the method and apparatuses described herein may further include: determining a number of coded modulation symbols for the at least one first CSI based on a first parameter for the at least one first CSI.
[0033] In some implementations of the method and apparatuses described herein, the UCI further comprises one or more second UCIs. Some implementations of the method and apparatuses described herein may further include: determining respective numbers of coded modulation symbols for the one or more second UCIs based on the number of coded modulation symbols for the at least one first CSI.
[0034] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI. Some implementations of the method and apparatuses described herein may further include: determining respective numbers of coded modulation symbols for the one or more second UCIs. The number of coded modulation symbols for the at least one first CSI is determined based on: the respective numbers of coded modulation symbols for the one or more second UCIs; a first parameter for the at least one first CSI; a higher layer parameter scaling associated with first CSI transmission; and a beta offset associated with first CSI transmission.
[0035] In some implementations of the method and apparatuses described herein, the first parameter comprises one of the following: a number of coded bits associated with at least one encoded output of the first AI / ML-based model; a number of coded bits associated with at least one encoded output of the first AI / ML-based model and a scaling factor; a number of bits associated with at least one output of the first AI / ML-based model; a number of bits associated with at least one output of the first AI / ML-based model and a scaling factor; a predefined bit length value; a bit length value indicated by the network entity; a number of bits associated with at least one input of the first AI / ML-based model; or a number of bits associated with at least one input of the first AI / ML-based model and a scaling factor.
[0036] In some implementations of the method and apparatuses described herein, the number of coded bits associated with the at least one encoded output of the first AI / ML-based model is associated with a matrix dimension of the at least one encoded output and a modulation order of the transmission resource.
[0037] In some implementations of the method and apparatuses described herein, the scaling factor is predefined or configured by the network entity.
[0038] In some implementations of the method and apparatuses described herein, a first encoded output among the at least one encoded output is rate matched to a part rate matching output sequence length, wherein the part rate matching output sequence length is equal to the rate matching output sequence length divided by the number of first CSIs among the at least one first CSI.
[0039] In some implementations of the method and apparatuses described herein, the part rate matching output sequence length is larger than the number of coded bits associated with the first encoded output, at least one most important bit of the first encoded output is repeated.
[0040] In some implementations of the method and apparatuses described herein, the part rate matching output sequence length is smaller than a number of coded bits associated with the first encoded output, at least one least important bit of the first encoded output is punctured.
[0041] In some implementations of the method and apparatuses described herein, location information of the at least one most important bit or the at least one least important bit is predefined.
[0042] Some implementations of the method and apparatuses described herein may further include one of the following: transmitting, to the network entity, location information of the at least one most important bit or the at least one least important bit; or receiving, , from the network entity, location information of the at least one most important bit or the at least one least important bit.
[0043] In some implementations of the method and apparatuses described herein, the at least one most important bit of the first encoded output comprises first at least one bit of the first encoded output, and the at least one least important bit of the first encoded output comprises last at least one bit of the first encoded output.
[0044] In some implementations of the method and apparatuses described herein, the at least one most important bit of the first encoded output comprises last at least one bit of the first encoded output, and the at least one least important bit of the first encoded output comprises first at least one bit of the first encoded output
[0045] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI and second CSI comprising CSI part 1 and CSI part 2. Some implementations of the method and apparatuses described herein may further include: mapping at least one coded bit for the at least one first CSI to the transmission resource before at least one coded bit for the CSI part 2; and wherein the mapping of the at least one coded bit for the at least one first CSI is before or after at least one coded bit for the CSI part 1.
[0046] In a second aspect of the solution, a network entity determines a transmission resource for uplink control information (UCI) , wherein the UCI comprises associated with at least one first channel status information (CSI) generated by a first artificial intelligence / machine learning (AI / ML) -based model; receives, from a user equipment (UE) , the UCI on the transmission resource; and decodes the at least one first CSI using a second AI / ML-based model.
[0047] In some implementations of the method and apparatuses described herein, the first AI / ML-based model comprises at least one of the following: a CSI generation model for CSI compression; or a CSI generation model for joint source and channel coding.
[0048] In some implementations of the method and apparatuses described herein, the second AI / ML-based model comprises at least one of the following: a CSI reconstruction model for CSI decompression; or a CSI reconstruction model for joint source and channel decoding.
[0049] In some implementations of the method and apparatuses described herein, the transmission resource comprises one of the following: a physical uplink control channel (PUCCH) transmission resource; or a physical uplink shared channel (PUSCH) transmission resource.
[0050] Some implementations of the method and apparatuses described herein may further include: determining first at least one transmission resource for the at least one first CSI; and determining second at least one transmission resource for at least one second UCI, wherein the first at least one transmission resource is overlapped with the second at least one transmission resource, wherein the at least one second UCI comprises at least one of the following: hybrid automatic repeat request-acknowledgement (HARQ-ACK) information; scheduling request (SR) information; or at least one second CSI.
[0051] In some implementations of the method and apparatuses described herein, the UCI comprises: the at least one first CSI, and one or more second UCIs among the at least one second UCI excluding the at least one second CSI.
[0052] In some implementations of the method and apparatuses described herein, the at least one second CSI and the at least one first CSI are associated with different CSI quantities, and the UCI comprises: the at least one first CSI, and the at least one second UCI.
[0053] In some implementations of the method and apparatuses described herein, one or more second CSIs among the at least one second CSI and one or more first CSIs among the at least one first CSI are associated with the same CSI quantities, and the UCI comprises one of the following: the at least one first CSI and the at least one second UCI excluding the one or more second CSIs; or the at least one second UCI and the at least one first CSI excluding the one or more first CSIs.
[0054] In some implementations of the method and apparatuses described herein, the UCI comprises one of the following: the at least one first CSI; or the at least one second UCI.
[0055] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one second UCI and at least one further second CSI, wherein the at least one further second CSI is generated based on channel information associated with the at least one first CSI.
[0056] In some implementations of the method and apparatuses described herein, the transmission resource for the UCI is a PUCCH resource determined at least based on a first parameter for the at least one first CSI.
[0057] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI. Some implementations of the method and apparatuses described herein may further include one of the following: determining a resource set based on the first parameter for the at least one first CSI, wherein the transmission resource is comprised in the resource set; or determining the transmission resource based on the first parameter for the at least one first CSI.
[0058] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI and one or more second UCIs. Some implementations of the method and apparatuses described herein may further include one of the following: determining a resource set based on the first parameter for the at least one first CSI and an information bit length of the one or more second UCIs, wherein the transmission resource is comprised in the resource set; or determining the transmission resource based on the first parameter for the at least one first CSI and an information bit length of the one or more second UCIs; or determining a resource set group based on the first parameter for the at least one first CSI, and determining a resource set among the resource set group based on an information bit length of the one or more second UCIs, wherein the transmission resource is comprised in the resource set; or determining a resource set group based on an information bit length of the one or more second UCIs, and determining a resource set among the resource set group based on the first parameter for the at least one first CSI, wherein the transmission resource is comprised in the resource set.
[0059] Some implementations of the method and apparatuses described herein may further include: determining at least one PUCCH resource set for transmissions of first CSIs, wherein the transmission resource is comprised in the at least one PUCCH resource set, and the UCI comprises the at least one first CSI.
[0060] In some implementations of the method and apparatuses described herein, the at least one PUCCH resource set is associated with one of the following: transmissions of first CSIs only; or transmissions of first CSIs multiplexed with transmissions second UCIs; or transmissions of first CSIs.
[0061] Some implementations of the method and apparatuses described herein may further include: decode each part among at least one part of channel information separately based on the second AI / ML-based model, wherein the at least one first CSI comprises at least one encoded part of the channel information.
[0062] In some implementations of the method and apparatuses described herein, each part comprises one of the following: respective channel information for a subband; respective channel information for a CSI report; or respective channel information for a sub-CSI report configuration.
[0063] Some implementations of the method and apparatuses described herein may further include: determining a rate matching output sequence length for the at least one first CSI; and performing a de-rate matching on the at least one first CSI based on the rate matching output sequence length.
[0064] Some implementations of the method and apparatuses described herein may further include: determining a rate matching output sequence length for the at least one first CSI; and determining a number of coded bits associated with at least one encoded output of the first AI / ML-based model based on the rate matching output sequence length, wherein the number of coded bits associated with each encoded output is equal to the rate matching output sequence length divided by the number of first CSIs among the at least one first CSI.
[0065] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI, and the transmission resource comprises a PUCCH resource, wherein the rate matching output sequence length for the at least one first CSI is determined based on a size of the PUCCH resource.
[0066] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI, and the transmission resource comprises a PUCCH resource, wherein the rate matching output sequence length for the at least one first CSI is determined based on a size of the PUCCH resource and a modulation order of the transmission resource.
[0067] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI and one or more second UCIs, the transmission resource comprises a PUCCH resource, and the rate matching output sequence length for the at least one first CSI is a first rate matching output sequence length. Some implementations of the method and apparatuses described herein may further include: determining a second rate matching output sequence length for the one or more second UCIs based on a size of the PUCCH resource and the first rate matching output sequence length.
[0068] In some implementations of the method and apparatuses described herein, the first rate matching output sequence length is determined based on: a size of the PUCCH resource, a configured maximum PUCCH coding rate, a first parameter for the at least one first CSI, and a modulation order of the PUCCH resource.
[0069] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI and one or more second UCIs, the transmission resource comprises a PUCCH resource, and the rate matching output sequence length for the at least one first CSI is a first rate matching output sequence length. Some implementations of the method and apparatuses described herein may further include: determining a second rate matching output sequence length for the one or more second UCIs, wherein the first rate matching output sequence length is determined based on a size of the PUCCH resource and the second rate matching output sequence length.
[0070] In some implementations of the method and apparatuses described herein, the first rate matching output sequence length is determined based on: a size of the PUCCH resource, the second rate matching output sequence length, and a modulation order of the PUCCH resource.
[0071] In some implementations of the method and apparatuses described herein, the second rate matching output sequence length is determined based on: a size of the PUCCH resource, a configured maximum PUCCH coding rate, an information bit length of the one or more second UCIs, a number of cyclic redundancy check (CRC) bits for encoding information for the one or more second UCIs, and a modulation order of the PUCCH resource.
[0072] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI, and the transmission resource comprises a PUSCH resource, wherein the rate matching output sequence length for the at least one first CSI is determined based on a number of coded modulation symbols for the at least one first CSI.
[0073] In some implementations of the method and apparatuses described herein, the number of coded modulation symbols for the at least one first CSI is determined based on:a first parameter for the at least one first CSI; a higher layer parameter scaling associated with first CSI transmission; and a beta offset associated with first CSI transmission.
[0074] Some implementations of the method and apparatuses described herein may further include: determining a number of coded modulation symbols for the at least one first CSI based on a first parameter for the at least one first CSI.
[0075] In some implementations of the method and apparatuses described herein, the UCI further comprises one or more second UCIs. Some implementations of the method and apparatuses described herein may further include: determining respective numbers of coded modulation symbols for the one or more second UCIs based on the number of coded modulation symbols for the at least one first CSI.
[0076] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI. Some implementations of the method and apparatuses described herein may further include: determining respective numbers of coded modulation symbols for the one or more second UCIs. The number of coded modulation symbols for the at least one first CSI is determined based on: the respective numbers of coded modulation symbols for the one or more second UCIs; a first parameter for the at least one first CSI; a higher layer parameter scaling associated with first CSI transmission; and a beta offset associated with first CSI transmission.
[0077] In some implementations of the method and apparatuses described herein, the first parameter comprises one of the following: a number of coded bits associated with at least one encoded output of the first AI / ML-based model; a number of coded bits associated with at least one encoded output of the first AI / ML-based model and a scaling factor; a number of bits associated with at least one output of the first AI / ML-based model; a number of bits associated with at least one output of the first AI / ML-based model and a scaling factor; a predefined bit length value; a bit length value indicated by the network entity; a number of bits associated with at least one input of the first AI / ML-based model; or a number of bits associated with at least one input of the first AI / ML-based model and a scaling factor.
[0078] In some implementations of the method and apparatuses described herein, the number of coded bits associated with the at least one encoded output of the first AI / ML-based model is associated with a matrix dimension of the at least one encoded output and a modulation order of the transmission resource.
[0079] In some implementations of the method and apparatuses described herein, the scaling factor is predefined or configured by the network entity.
[0080] In some implementations of the method and apparatuses described herein, a first encoded output among the at least one encoded output is rate matched to a part rate matching output sequence length, wherein the part rate matching output sequence length is equal to the rate matching output sequence length divided by the number of first CSIs among the at least one first CSI.
[0081] In some implementations of the method and apparatuses described herein, the part rate matching output sequence length is larger than a number of coded bits associated with the first encoded output, at least one most important bit of the first encoded output is repeated.
[0082] In some implementations of the method and apparatuses described herein, the part rate matching output sequence length is smaller than a number of coded bits associated with the first encoded output, at least one least important bit of the first encoded output is punctured.
[0083] In some implementations of the method and apparatuses described herein, location information of the at least one most important bit or the at least one least important bit is predefined.
[0084] Some implementations of the method and apparatuses described herein may further include one of the following: receiving, , from the UE, location information of the at least one most important bit or the at least one least important bit; or transmitting, to the UE, location information of the at least one most important bit or the at least one least important bit.
[0085] In some implementations of the method and apparatuses described herein, the at least one most important bit of the first encoded output comprises first at least one bit of the first encoded output, and the at least one least important bit of the first encoded output comprises last at least one bit of the first encoded output.
[0086] In some implementations of the method and apparatuses described herein, the at least one most important bit of the first encoded output comprises last at least one bit of the first encoded output, and the at least one least important bit of the first encoded output comprises first at least one bit of the first encoded output
[0087] In some implementations of the method and apparatuses described herein, the UCI comprises the at least one first CSI and second CSI comprising CSI part 1 and CSI part 2, and wherein at least one coded bit for the at least one first CSI is mapped to the transmission resource before at least one coded bit for the CSI part 2; and wherein the mapping of the at least one coded bit for the at least one first CSI is before or after at least one coded bit for the CSI part 1.BRIEF DESCRIPTION OF THE DRAWINGS
[0088] FIG. 1A illustrates an example of a wireless communications system that supports CSI transmission in accordance with aspects of the present disclosure.
[0089] FIG. 1B illustrates an example scheme of PUCCH resource set determination for UCI transmission.
[0090] FIG. 1C illustrates an example procedure of transmitting UCI on a PUCCH resource.
[0091] FIG. 1D illustrates an example procedure of transmitting UCI on a PUSCH resource.
[0092] FIG. 1E illustrates an example of an inference procedure for CSI compression associated with aspects of the present disclosure.
[0093] FIG. 1F illustrates an example of a joint CSI compression and channel coding procedure associated with aspects of the present disclosure.
[0094] FIG. 2 illustrates an example of a signalling procedure of CSI transmission in accordance with aspects of the present disclosure.
[0095] FIG. 3 illustrates an example scheme of PUCCH resource set determination for UCI transmission in accordance with aspects of the present disclosure.
[0096] FIG. 4 illustrates an example procedure of multiplexing JSCC-encoded CSI bits on a PUSCH resource in accordance with aspects of the present disclosure.
[0097] FIG. 5A illustrates an example procedure of determining a rate matching output sequence length for JSCC-encoded CSI to be multiplexed with legacy UCI on a PUCCH resource in accordance with aspects of the present disclosure.
[0098] FIG. 5B illustrates another example procedure of determining a rate matching output sequence length for JSCC-encoded CSI to be multiplexed with legacy UCI on a PUCCH resource in accordance with aspects of the present disclosure.
[0099] FIG. 6A illustrates an example scheme of rate matching of JSCC-encoded CSI bits in accordance with aspects of the present disclosure.
[0100] FIG. 6B illustrates another example scheme of rate matching of JSCC-encoded CSI bits in accordance with aspects of the present disclosure.
[0101] FIG. 7 illustrates an example procedure of adjustment on JSCC encoding in accordance with aspects of the present disclosure.
[0102] FIG. 8 illustrates an example of a device that supports CSI transmission in accordance with aspects of the present disclosure.
[0103] FIG. 9 illustrates an example of a processor that supports CSI transmission in accordance with aspects of the present disclosure.
[0104] FIGS. 10 through 11 illustrate flowcharts of methods that support CSI transmission in accordance with aspects of the present disclosure.DETAILED DESCRIPTION
[0105] Principles of the present disclosure will now be described with reference to some embodiments. It is to be understood that these embodiments are described only for the purpose of illustration and help those skilled in the art to understand and implement the present disclosure, without suggesting any limitation as to the scope of the disclosure. The disclosure described herein may be implemented in various manners other than the ones described below.
[0106] In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skills in the art to which this disclosure belongs.
[0107] References in the present disclosure to “one embodiment, ” “an example embodiment, ” “an embodiment, ” “some embodiments, ” and the like indicate that the embodiment (s) described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment (s) . Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
[0108] It shall be understood that although the terms “first” and “second” or the like may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could also be termed as a second element, and similarly, a second element could also be termed as a first element, without departing from the scope of embodiments. As used herein, the term “and / or” includes any and all combinations of one or more of the listed terms.
[0109] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a” , “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” , “comprising” , “has” , “having” , “includes” and / or “including” , when used herein, specify the presence of stated features, elements, and / or components etc., but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof.
[0110] As used herein, the term “communication network” refers to a network following any suitable communication standards, such as, 5G new radio (NR) , long term evolution (LTE) , LTE-advanced (LTE-A) , wideband code division multiple access (WCDMA) , high-speed packet access (HSPA) , narrow band internet of things (NB-IoT) , and so on. Further, the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, and / or any other protocols either currently known or to be developed in the future. Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will also be future type communication technologies and systems in which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned systems.
[0111] As used herein, the term “network device” generally refers to a node in a communication network via which a terminal device can access the communication network and receive services therefrom. The network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , a radio access network (RAN) node, an evolved NodeB (eNodeB or eNB) , a NR NB (also referred to as a gNB) , a remote radio unit (RRU) , a radio header (RH) , an infrastructure device for a V2X (vehicle-to-everything) communication, a transmission and reception point (TRP) , a reception point (RP) , a remote radio head (RRH) , a relay, an integrated access and backhaul (IAB) node, a low power node such as a femto BS, a pico BS, and so forth, depending on the applied terminology and technology.
[0112] As used herein, the term “terminal device” generally refers to any end device that may be capable of wireless communications. By way of example rather than a limitation, a terminal device may also be referred to as a communication device, a user equipment (UE) , an end user device, a subscriber station (SS) , an unmanned aerial vehicle (UAV) , a portable subscriber station, a mobile station (MS) , or an access terminal (AT) . The terminal device may include, but is not limited to, a mobile phone, a cellular phone, a smart phone, a voice over IP (VoIP) phone, a wireless local loop phone, a tablet, a wearable terminal device, a personal digital assistant (PDA) , a portable computer, a desktop computer, an image capture terminal device such as a digital camera, a gaming terminal device, a music storage and playback appliance, a vehicle-mounted wireless terminal device, a wireless endpoint, a mobile station, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , a USB dongle, a smart device, wireless customer-premises equipment (CPE) , an internet of things (loT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device (for example, a remote surgery device) , an industrial device (for example, a robot and / or other wireless devices operating in an industrial and / or an automated processing chain contexts) , a consumer electronics device, a device operating on commercial and / or industrial wireless networks, and the like. In the following description, the terms: “terminal device, ” “communication device, ” “terminal, ” “user equipment” and “UE, ” may be used interchangeably.
[0113] Aspects of the present disclosure are described in the context of a wireless communications system. FIG. 1A illustrates an example of a wireless communications system 100 that supports CSI compression accordance with aspects of the present disclosure. The wireless communications system 100 may include one or more network entities 102 (also referred to as network equipment (NE) ) , one or more UEs 104, a core network 106, and a packet data network 108. The wireless communications system 100 may support various radio access technologies. In some implementations, the wireless communications system 100 may be a 4G network, such as an LTE network or an LTE-advanced (LTE-A) network. In some other implementations, the wireless communications system 100 may be a 5G network, such as an NR network. In other implementations, the wireless communications system 100 may be a combination of a 4G network and a 5G network, or other suitable radio access technology including institute of electrical and electronics engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20. The wireless communications system 100 may support radio access technologies beyond 5G. Additionally, the wireless communications system 100 may support technologies, such as time division multiple access (TDMA) , frequency division multiple access (FDMA) , or code division multiple access (CDMA) , etc.
[0114] The one or more network entities 102 may be dispersed throughout a geographic region to form the wireless communications system 100. One or more of the network entities 102 described herein may be or include or may be referred to as a network node, a base station, a network element, a radio access network (RAN) , a base transceiver station, an access point, a NodeB, an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology. A network entity 102 and a UE 104 may communicate via a communication link 110, which may be a wireless or wired connection. For example, a network entity 102 and a UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) over a Uu interface.
[0115] A network entity 102 may provide a geographic coverage area 112 for which the network entity 102 may support services (e.g., voice, video, packet data, messaging, broadcast, etc. ) for one or more UEs 104 within the geographic coverage area 112. For example, a network entity 102 and a UE 104 may support wireless communication of signals related to services (e.g., voice, video, packet data, messaging, broadcast, etc. ) according to one or multiple radio access technologies. In some implementations, a network entity 102 may be moveable, for example, a satellite associated with a non-terrestrial network. In some implementations, different geographic coverage areas 112 associated with the same or different radio access technologies may overlap, but the different geographic coverage areas 112 may be associated with different network entities 102. Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0116] The one or more UEs 104 may be dispersed throughout a geographic region of the wireless communications system 100. A UE 104 may include or may be referred to as a mobile device, a wireless device, a remote device, a remote unit, a handheld device, or a subscriber device, or some other suitable terminology. In some implementations, the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples. Additionally, or alternatively, the UE 104 may be referred to as an internet-of-things (IoT) device, an internet-of-everything (IoE) device, or machine-type communication (MTC) device, among other examples. In some implementations, a UE 104 may be stationary in the wireless communications system 100. In some other implementations, a UE 104 may be mobile in the wireless communications system 100.
[0117] The one or more UEs 104 may be devices in different forms or having different capabilities. Some examples of UEs 104 are illustrated in FIG. 1A. A UE 104 may be capable of communicating with various types of devices, such as the network entities 102, other UEs 104, or network equipment (e.g., the core network 106, the packet data network 108, a relay device, an integrated access and backhaul (IAB) node, or another network equipment) , as shown in FIG. 1A. Additionally, or alternatively, a UE 104 may support communication with other network entities 102 or UEs 104, which may act as relays in the wireless communications system 100.
[0118] A UE 104 may also be able to support wireless communication directly with other UEs 104 over a communication link 114. For example, a UE 104 may support wireless communication directly with another UE 104 over a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular-V2X deployments, the communication link 114 may be referred to as a sidelink. For example, a UE 104 may support wireless communication directly with another UE 104 over a PC5 interface.
[0119] A network entity 102 may support communications with the core network 106, or with another network entity 102, or both. For example, a network entity 102 may interface with the core network 106 through one or more backhaul links 116 (e.g., via an S1, N2, N2, or another network interface) . The network entities 102 may communicate with each other over the backhaul links 116 (e.g., via an X2, Xn, or another network interface) . In some implementations, the network entities 102 may communicate with each other directly (e.g., between the network entities 102) . In some other implementations, the network entities 102 may communicate with each other or indirectly (e.g., via the core network 106) . In some implementations, one or more network entities 102 may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC) . An ANC may communicate with the one or more UEs 104 through one or more other access network transmission entities, which may be referred to as a radio heads, smart radio heads, or transmission-reception points (TRPs) .
[0120] In some implementations, a network entity 102 may be configured in a disaggregated architecture, which may be configured to utilize a protocol stack physically or logically distributed among two or more network entities 102, such as an integrated access backhaul (IAB) network, an open radio access network (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) . For example, a network entity 102 may include one or more of a CU, a DU, a radio unit (RU) , a RAN intelligent controller (RIC) (e.g., a near-real time RIC (Near-RT RIC) , a non-real time RIC (Non-RT RIC) ) , a service management and orchestration (SMO) system, or any combination thereof.
[0121] An RU may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 102 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 102 may be located in distributed locations (e.g., separate physical locations) . In some implementations, one or more network entities 102 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0122] Split of functionality between a CU, a DU, and an RU may be flexible and may support different functionalities depending upon which functions (e.g., network layer functions, protocol layer functions, baseband functions, radio frequency functions, and any combinations thereof) are performed at a CU, a DU, or an RU. For example, a functional split of a protocol stack may be employed between a CU and a DU such that the CU may support one or more layers of the protocol stack and the DU may support one or more different layers of the protocol stack. In some implementations, the CU may host upper protocol layer (e.g., a layer 3 (L3) , a layer 2 (L2) ) functionality and signaling (e.g., radio resource control (RRC) , service data adaption protocol (SDAP) , packet data convergence protocol (PDCP) ) . The CU may be connected to one or more DUs or RUs, and the one or more DUs or RUs may host lower protocol layers, such as a layer 1 (L1) (e.g., physical (PHY) layer) or an L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160.
[0123] Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU and an RU such that the DU may support one or more layers of the protocol stack and the RU may support one or more different layers of the protocol stack. The DU may support one or multiple different cells (e.g., via one or more RUs) . In some implementations, a functional split between a CU and a DU, or between a DU and an RU may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU, a DU, or an RU, while other functions of the protocol layer are performed by a different one of the CU, the DU, or the RU) .
[0124] A CU may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU may be connected to one or more DUs via a midhaul communication link (e.g., F1, F1-c, F1-u) , and a DU may be connected to one or more RUs via a fronthaul communication link (e.g., open fronthaul (FH) interface) . In some implementations, a midhaul communication link or a fronthaul communication link may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 102 that are in communication via such communication links.
[0125] The core network 106 may support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions. The core network 106 may be an evolved packet core (EPC) , or a 5G core (5GC) , which may include a control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management functions (AMF) ) and a user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a packet data network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . In some implementations, the control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signal bearers, etc. ) for the one or more UEs 104 served by the one or more network entities 102 associated with the core network 106.
[0126] The core network 106 may communicate with the packet data network 108 over one or more backhaul links 116 (e.g., via an S1, N2, N2, or another network interface) . The packet data network 108 may include an application server 118. In some implementations, one or more UEs 104 may communicate with the application server 118. A UE 104 may establish a session (e.g., a protocol data unit (PDU) session, or the like) with the core network 106 via a network entity 102. The core network 106 may route traffic (e.g., control information, data, and the like) between the UE 104 and the application server 118 using the established session (e.g., the established PDU session) . The PDU session may be an example of a logical connection between the UE 104 and the core network 106 (e.g., one or more network functions of the core network 106) .
[0127] In the wireless communications system 100, the network entities 102 and the UEs 104 may use resources of the wireless communications system 100 (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) ) to perform various operations (e.g., wireless communications) . In some implementations, the network entities 102 and the UEs 104 may support different resource structures. For example, the network entities 102 and the UEs 104 may support different frame structures. In some implementations, such as in 4G, the network entities 102 and the UEs 104 may support a single frame structure. In some other implementations, such as in 5G and among other suitable radio access technologies, the network entities 102 and the UEs 104 may support various frame structures (i.e., multiple frame structures) . The network entities 102 and the UEs 104 may support various frame structures based on one or more numerologies.
[0128] One or more numerologies may be supported in the wireless communications system 100, and a numerology may include a subcarrier spacing and a cyclic prefix. A first numerology (e.g., μ=0) may be associated with a first subcarrier spacing (e.g., 15 kHz) and a normal cyclic prefix. In some implementations, the first numerology (e.g., μ=0) associated with the first subcarrier spacing (e.g., 15 kHz) may utilize one slot per subframe. A second numerology (e.g., μ=1) may be associated with a second subcarrier spacing (e.g., 30 kHz) and a normal cyclic prefix. A third numerology (e.g., μ=2) may be associated with a third subcarrier spacing (e.g., 60 kHz) and a normal cyclic prefix or an extended cyclic prefix. A fourth numerology (e.g., μ=3) may be associated with a fourth subcarrier spacing (e.g., 120 kHz) and a normal cyclic prefix. A fifth numerology (e.g., μ=4) may be associated with a fifth subcarrier spacing (e.g., 240 kHz) and a normal cyclic prefix.
[0129] A time interval of a resource (e.g., a communication resource) may be organized according to frames (also referred to as radio frames) . Each frame may have a duration, for example, a 10 millisecond (ms) duration. In some implementations, each frame may include multiple subframes. For example, each frame may include 10 subframes, and each subframe may have a duration, for example, a 1 ms duration. In some implementations, each frame may have the same duration. In some implementations, each subframe of a frame may have the same duration.
[0130] Additionally or alternatively, a time interval of a resource (e.g., a communication resource) may be organized according to slots. For example, a subframe may include a number (e.g., quantity) of slots. The number of slots in each subframe may also depend on the one or more numerologies supported in the wireless communications system 100. For instance, the first, second, third, fourth, and fifth numerologies (i.e., μ=0, μ=1, μ=2, μ=3, μ=4) associated with respective subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may utilize a single slot per subframe, two slots per subframe, four slots per subframe, eight slots per subframe, and 16 slots per subframe, respectively. Each slot may include a number (e.g., quantity) of symbols (e.g., OFDM symbols) . In some implementations, the number (e.g., quantity) of slots for a subframe may depend on a numerology. For a normal cyclic prefix, a slot may include 14 symbols. For an extended cyclic prefix (e.g., applicable for 60 kHz subcarrier spacing) , a slot may include 12 symbols. The relationship between the number of symbols per slot, the number of slots per subframe, and the number of slots per frame for a normal cyclic prefix and an extended cyclic prefix may depend on a numerology. It should be understood that reference to a first numerology (e.g., μ=0) associated with a first subcarrier spacing (e.g., 15 kHz) may be used interchangeably between subframes and slots.
[0131] Additionally or alternatively, a time interval of a resource (e.g., a communication resource) may be organized according to symbols.
[0132] In the wireless communications system 100, an electromagnetic (EM) spectrum may be split, based on frequency or wavelength, into various classes, frequency bands, frequency channels, etc. By way of example, the wireless communications system 100 may support one or multiple operating frequency bands, such as frequency range designations FR1 (410 MHz –7.125 GHz) , FR2 (24.25 GHz –52.6 GHz) , FR3 (7.125 GHz –24.25 GHz) , FR4 (52.6 GHz –114.25 GHz) , FR4a or FR4-1 (52.6 GHz –71 GHz) , and FR5 (114.25 GHz –300 GHz) . In some implementations, the network entities 102 and the UEs 104 may perform wireless communications over one or more of the operating frequency bands. In some implementations, FR1 may be used by the network entities 102 and the UEs 104, among other equipment or devices for cellular communications traffic (e.g., control information, data) . In some implementations, FR2 may be used by the network entities 102 and the UEs 104, among other equipment or devices for short-range, high data rate capabilities.
[0133] FR1 may be associated with one or multiple numerologies (e.g., at least three numerologies) . For example, FR1 may be associated with a first numerology (e.g., μ=0) , which includes 15 kHz subcarrier spacing; a second numerology (e.g., μ=1) , which includes 30 kHz subcarrier spacing; and a third numerology (e.g., μ=2) , which includes 60 kHz subcarrier spacing. FR2 may be associated with one or multiple numerologies (e.g., at least 2 numerologies) . For example, FR2 may be associated with a third numerology (e.g., μ=2) , which includes 60 kHz subcarrier spacing; and a fourth numerology (e.g., μ=3) , which includes 120 kHz subcarrier spacing.
[0134] A CSI may include various quantities, such as channel quality indicator (CQI) , rank indicator (RI) , precoding matrix indicator (PMI) , layer 1 signal-to-interference-plus-noise ratio (L1-SINR) , and layer 1 reference signal received power (L1-RSRP) . The CSI may be transmitted from the UE to the gNB as part of UCI. UCI may include elements such as hybrid automatic repeat request acknowledgement (HARQ-ACK) , scheduling request (SR) , CSI, configured grant UCI (CG-UCI) , and uplink time offset UCI (UTO-UCI) , among others. UCI may be transmitted on either a PUCCH resource or a PUSCH resource. Herein after, some aspects related to UCI transmissions on a PUCCH resource and on a PUSCH resource will be introduced respectively.
[0135] UCI types reported in a PUCCH include HARQ-ACK information, SR, link recovery request (LRR) , and CSI. A UE may multiplex DL HARQ-ACK information, with or without SR, and CSI report (s) in a same PUCCH resource if the UE is configured with simultaneousHARQ-ACK-CSI; otherwise, the UE drops the CSI report (s) and includes only DL HARQ-ACK information, with or without SR, in the PUCCH resource.
[0136] One or multiple UCI types may be transmitted in a UL slot or sub-slot. The UE may determine the PUCCH resource to use based on the UCI information bits that should be fed back in that slot / sub-slot and the indication from the gNB. FIG. 1B illustrates an example scheme of PUCCH resource determination for UCI transmission. As shown in FIG. 1B, four PUCCH resource sets may be configured, and the UE may select one from the four configured PUCCH resource set based on the number of UCI information bits to be transmitted. The UE may determine the PUCCH resource from the PUCCH resource set based on an indication received from the gNB.
[0137] As an example, if the UE is to transmit OUCI UCI information bits, that include HARQ-ACK information bits, the UE determines a PUCCH resource set as follows: - a first set of PUCCH resources with pucch-ResourceSetId = 0, if OUCI≤2 including 1 or 2 HARQ-ACK information bits and a positive or negative SR on one SR transmission occasion if transmission of HARQ-ACK information and SR occurs simultaneously, or - a second set of PUCCH resources with pucch-ResourceSetId = 1, if provided by higher layers, if 2<OUCI≤N2 where N2 is equal to maxPayloadSize if maxPayloadSize is provided for the PUCCH resource set with pucch-ResourceSetId = 1; otherwise N2 is equal to 1706, or - a third set of PUCCH resources with pucch-ResourceSetId = 2, if provided by higher layers, if N2<OUCI≤N3 where N3 is equal to maxPayloadSize if maxPayloadSize is provided for the PUCCH resource set with pucch-ResourceSetId = 2; otherwise N3 is equal to 1706, or - a fourth set of PUCCH resources with pucch-ResourceSetId = 3, if provided by higher layers, if N3<OUCI≤1706.
[0138] In addition, multiple CSI reports may be transmitted on a same PUCCH resource. Each CSI report may be configured for wideband or sub-band. For a sub-band configuration, a CSI is provided for each sub-band.
[0139] For ease of understanding, the terms used herein as denoted as follows: - OACK is a total number of HARQ-ACK information bits, if any. - OSR is a total number of SR bits. OSR=0 if there is no scheduling request bit; otherwise, as described in Clause 9.2.5.1 of 3GPP specification TS 38.213. - where OCSI-part1, n is a number of Part 1 CSI report bits for CSI report with priority value n, OCSI-part2, n is a number of Part 2 CSI report bits, if any, for CSI report with priority value n, and is a number of CSI reports that include overlapping CSI reports. - OCRC=OCRC, CSI-part1+OCRC, CSI-part2, where OCRC, CSI-part1 is a number of CRC bits, if any, for encoding HARQ-ACK, SR and Part 1 CSI report bits and OCRC, CSI-part2 is a number of CRC bits, if any, for encoding Part 2 CSI report bits. - r is a code rate given by maxCodeRate as in Table 9.2.5.2-1 of 3GPP specification TS 38.213. - is a number of PRBs provided by nrofPRBs; otherwise, if nrofPRBs is not provided, - for PUCCH format 2 or, if the PUCCH resource with PUCCH format 2 includes an orthogonal cover code with length provided by occ-Length, for PUCCH format 3 or, if the PUCCH resource with PUCCH format 3 includes an orthogonal cover code with length provided by occ-Length, for PUCCH format 4, where is a number of subcarriers per resource block. - is equal to a number of PUCCH symbols for PUCCH format 2 provided by nrofSymbols in PUCCH-format2. For PUCCH format 3 or for PUCCH format 4, is equal to a number of PUCCH symbols for PUCCH format 3 or equal to a number of PUCCH symbols for PUCCH format 4 provided by nrofSymbols in PUCCH-format3 or nrofSymbols in PUCCH-format4, respectively, after excluding a number of symbols used for DM-RS transmission for PUCCH format 3 or for PUCCH format 4, respectively. - Qm=1 if pi / 2-BPSK is the modulation scheme and Qm=2 if QPSK is the modulation scheme as indicated by pi2BPSK for PUCCH format 3 or PUCCH format 4. For PUCCH format 2, Qm=2.
[0140] For transmitting the UCI on a PUCCH resource, the following procedure may be used: (1) UCI bit sequence generation; (2) code block segmentation and CRC attachment; (3) channel coding of UCI; (4) rate matching; (5) code block concatenation; and (6) multiplexing of coded UCI bits to PUCCH. FIG. 1C illustrates an example procedure of transmitting UCI on a PUCCH resource.
[0141] The UCI bit sequence generation procedure is to determine the information bits of the UCI, including HARQ-ACK, CSI part 1 and part 2, and CG-UCI. The output of this procedure is a0, a1, a2, a3, ..., aA-1, where A is the payload size.
[0142] In the code block segmentation and CRC attachment procedure, for UCI, the initial bit sequence may be divided into one or two code blocks (CBs) . If the payload size A ≥12, code block segmentation and CRC attachment is performed according to following procedure. If (A≥360 and E≥1088) or if A≥1013, Iseg=1; otherwise Iseg=0, where E is the rate matching output sequence length as given in rate matching session. The code block segmentation may be implemented as follows:
[0143] If 12≤A≤19, 6-bit CRC is added, If A ≥20, 11-bit CRC is added.
[0144] In the channel coding of UCI procedure, each code block may be encoded by polar coding or by channel coding of small block lengths according to the payload size of the code block.
[0145] For UCI encoded by polar code, information bits are delivered to the channel coding block. The information bits are denoted by where r is the code block number, and Kr is the number of bits in code block number r. The total number of code blocks is denoted by C and each code block is individually encoded.
[0146] For UCI encoded by channel coding of small block lengths, information bits are delivered to the channel coding block. They are denoted by c0, c1, c2, c3, ..., cK-1, where K is the number of bits. Assuming there are only one code block, then the information bits are encoded. Then after encoding, the bits are denoted by d0, d1, d2, d3, ..., dN-1, where N is the number of coded bits. If there are multiple CBs, then after encoding, the bits are denoted by where Nr is the number of coded bits in code block number r.
[0147] In the rate matching procedure, as explained above, according to the number of UCI information bits, a PUCCH resource may be determined to transmit the UCI information. And for that PUCCH resource with PUCCH formats 2 / 3 / 4, the total rate matching output sequence length Etot is given by Table 6.3.1.4-1 of 3GPP specification TS 38.212 as shown below. Table 6.3.1.4-1: Total rate matching output sequence length Etot
[0148] Wherein and are the number of symbols carrying UCI for PUCCH formats 2 / 3 / 4, respectively; and are the number of PRBs that are determined by the UE for PUCCH formats 2 / 3 / 4 transmission respectively; and and are the spreading factors for PUCCH format 2, PUCCH format 3, and PUCCH format 4, respectively.
[0149] The input bit sequence to rate matching is where r is the code block number, and Nr is the number of coded bits in code block number r.
[0150] For UCI encoded by Polar code, the output bit sequence length EUCI for each UCI is determined based on Table 6.3.1.4.1-1 of 3GPP specification TS 38.212 as shown below. Table 6.3.1.4.1-1: Rate matching output sequence length EUCI wherein: - OACK is the number of bits for HARQ-ACK for transmission on the current PUCCH; - OSR is the number of bits for SR for transmission on the current PUCCH; - OCSI-part1 is the number of bits for CSI part 1 for transmission on the current PUCCH; - OCSI-part2 is the number of bits for CSI part 2 for transmission on the current PUCCH; - if A≥360, L=11 ; otherwise, L is the number of CRC bits determined, where A equals OCSI-part1 for "CSI (CSI of two parts) " , equals OACK+OCSI-part1 for "HARQ-ACK, CSI (CSI of two parts) " , and equals OACK+OSR+OCSI-part1 for "HARQ-ACK, SR, CSI (CSI of two parts) ; - is the configured maximum PUCCH coding rate.
[0151] The rate matching procedure includes sub-block interleaving, bit selection, and interleaving of coded bits. The bit selection procedure is performed according to following procedure by setting IBIL=1 and the rate matching output sequence length to where CUCI is the number of code blocks for UCI determined.
[0152] The bit sequence after the sub-block interleaver y0, y1, y2, ..., yN-1 is written into a circular buffer of length N.
[0153] Denoting by E the rate matching output sequence length, the bit selection output bit sequence ek, k=0, 1, 2, ..., E-1, is generated as follows:
[0154] The output bit sequence after rate matching is denoted as where Er is the length of rate matching output sequence in code block number r. Then, the coded blocks after rate matching is connected so as to transmit in the PUCCH resource.
[0155] For UCI encoded by small block length, the input bit sequence to rate matching is d0, d1, d2, ..., dN-1. The output bit sequence after rate matching is denoted as f0, f1, f2, ..., fE-1, where E is the rate matching output sequence length. The bit sequence f0, f1, f2, ..., fE-1 is obtained by the following: for k=0 to E-1 fk=dk mod N; end for
[0156] If a UE transmits a PUSCH over multiple slots and the UE would transmit a PUCCH with HARQ-ACK and / or CSI information over a single slot that overlaps with the PUSCH transmission in one or more slots of the multiple slots, and the PUSCH transmission in the one or more slots fulfills the predefined conditions for multiplexing the HARQ-ACK and / or CSI information, the UE multiplexes the HARQ-ACK and / or CSI information in the PUSCH transmission in the one or more slots, and does not transmit SR.
[0157] For transmitting the UCI on a PUSCH resource, the following procedure may be used: (1) UCI bit sequence generation; (2) code block segmentation and CRC attachment; (3) channel coding of UCI; (4) rate matching; (5) code block concatenation; and (6) multiplexing of coded UCI bits to PUSCH. FIG. 1D illustrates an example procedure of transmitting UCI on a PUSCH resource.
[0158] The UCI bit sequence generation procedure in transmitting a UCI on a PUCCH resource is similar to the UCI bit sequence generation procedure in transmitting a UCI on a PUSCH resource and details thereof will be omitted.
[0159] The code block segmentation and CRC attachment procedure in transmitting a UCI on a PUCCH resource is similar to the code block segmentation and CRC attachment procedure in transmitting a UCI on a PUSCH resource and details thereof will be omitted.
[0160] The channel coding of UCI procedure in transmitting a UCI on a PUCCH resource is similar to the channel coding of UCI procedure in transmitting a UCI on a PUSCH resource and details thereof will be omitted.
[0161] The rate matching procedure in transmitting a UCI on a PUCCH resource is similar to the rate matching procedure in transmitting a UCI on a PUSCH resource and differ in how to determine the output of rate matching sequence output bit sequence length EUCI.
[0162] For UCI encoded by Polar code, for HARQ-ACK transmission on PUSCH not using repetition type B with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as Q′ACK, is determined as follows: where: - OACK is the number of HARQ-ACK bits; - if OACK ≥360, LACK=11; otherwise LACK is the number of CRC bits for HARQ- ACK determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - if the DCI format scheduling the PUSCH transmission includes a CBGTI field indicating that the UE shall not transmit the r-th code block, Kr=0; otherwise, Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured by higher layer parameter scaling; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission.
[0163] For HARQ-ACK transmission on PUSCH not using repetition type B with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as Q′ACK, is determined as follows: where: - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0164] For HARQ-ACK transmission on an actual repetition of a PUSCH with repetition Type B with UL-SCH, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as Q′ACK, is determined as follows: where: - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission assuming a nominal repetition without segmentation, and is the total number of OFDM symbols in a nominal repetition of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH assuming a nominal repetition without segmentation, - for any OFDM symbol that does not carry DMRS of the PUSCH assuming a nominal repetition without segmentation, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission assuming a nominal repetition without segmentation; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the actual repetition of the PUSCH transmission, and is the total number of OFDM symbols in the actual repetition of the PUSCH transmission, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the actual repetition of the PUSCH transmission, - for any OFDM symbol that does not carry DMRS of the actual repetition of the PUSCH transmission, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the actual repetition of the PUSCH transmission; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0165] For HARQ-ACK transmission on PUSCH without UL-SCH, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as Q′ACK, is determined as follows: where: - QACK is the number of HARQ-ACK bits; - if OACK ≥360, LACK=11; otherwise LACK is the number of CRC bits for HARQ- ACK defined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission; - R is the code rate of the PUSCH, determined according to Clause 6.1.4.1 of [6, TS38.214] ; - Qm is the modulation order of the PUSCH; - α is configured by higher layer parameter scaling.
[0166] The input bit sequence to rate matching is where r is the code block number, and Nr is the number of coded bits in code block number r.
[0167] Rate matching is performed according to Clause 5.4.1 of 3GPP specification TS 38.212 by setting IBIL=1 and the rate matching output sequence length to where - CUCI is the number of code blocks for UCI determined according to Clause 5.2.1 of 3GPP specification TS 38.212; - NL is the number of transmission layers of the PUSCH; - Qm is the modulation order of the PUSCH; - EUCI=NL·Q′ACK·Qm.
[0168] The output bit sequence after rate matching is denoted as where Er is the length of rate matching output sequence in code block number r.
[0169] For UCI encoded by Polar code, for CSI part 1 transmission on PUSCH not using repetition type B with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for CSI part 1 transmission, denoted as Q′CSI-part1, is determined as follows: where: - OCSI-1 is the number of bits for CSI part 1; - if OCSI-1≥360, LCSI-1=11; otherwise LCSI-1 is the number of CRC bits for CSI part 1 determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - if the DCI format scheduling the PUSCH transmission includes a CBGTI field indicating that the UE shall not transmit the r-th code block, Kr=0; otherwise, Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - Q′ACK / CG-UCI=Q′ACK if HARQ-ACK is present for transmission on the same PUSCH with UL-SCH and without CG-UCI, where Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK transmitted on the PUSCH as defined in clause 6.3.2.4.1.1 of 3GPP specification TS 38.212 if number of HARQ-ACK information bits is more than 2, and if the number of HARQ-ACK information bits is no more than 2 bits, where is the number of reserved resource elements for potential HARQ-ACK transmission in OFDM symbol l, for in the PUSCH transmission, defined in Clause 6.2.7 of 3GPP specification TS 38.212; or - Q′ACK / CG-UCI=Q′ACK if both HARQ-ACK and CG-UCI are present on the same PUSCH with UL-SCH, where Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK and CG-UCI transmitted on the PUSCH as defined in clause 6.3.2.4.1.5 of 3GPP specification TS 38.212; or - Q′ACK / CG-UCI=Q′CG-UCI if CG-UCI is present on the same PUSCH with UL- SCH and without HARQ-ACK, where Q′CG-UCI is the number of coded modulation symbols per layer for CG-UCI transmitted on the PUSCH as defined in clause 6.3.2.4.1.4 of 3GPP specification TS 38.212; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured by higher layer parameter scaling.
[0170] For CSI part 1 transmission on PUSCH not using repetition type B with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for CSI part 1 transmission, denoted as Q′CSI-part1, is determined as follows: where: - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the CSI part 1 transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the CSI part 1 transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0171] For CSI part 1 transmission on an actual repetition of a PUSCH with repetition Type B with UL-SCH, the number of coded modulation symbols per layer for CSI part 1 transmission, denoted as Q′CSI-part1, is determined as follows: where: - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission assuming a nominal repetition without segmentation, and is the total number of OFDM symbols in a nominal repetition of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH assuming a nominal repetition without segmentation, - for any OFDM symbol that does not carry DMRS of the PUSCH assuming a nominal repetition without segmentation, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission assuming a nominal repetition without segmentation; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the actual repetition of the PUSCH transmission, and is the total number of OFDM symbols in the actual repetition of the PUSCH transmission, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the actual repetition of the PUSCH transmission, - for any OFDM symbol that does not carry DMRS of the actual repetition of the PUSCH transmission, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the actual repetition of the PUSCH transmission; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0172] For CSI part 1 transmission on PUSCH without UL-SCH, the number of coded modulation symbols per layer for CSI part 1 transmission, denoted as Q′CSI-part1, is determined as follows: if there is CSI part 2 to be transmitted on the PUSCH, else end if where: - OCSI-1 is the number of bits for CSI part 1; - if OCSI-1≥360, LCSI-1=11; otherwise LCSI-1 is the number of CRC bits for CSI part 1 determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK transmitted on the PUSCH if number of HARQ-ACK information bits is more than 2, and if the number of HARQ-ACK information bits is no more than 2 bits, where is the number of reserved resource elements for potential HARQ-ACK transmission in OFDM symbol l, for in the PUSCH transmission, defined in Clause 6.2.7 of 3GPP specification TS 38.212; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - R is the code rate of the PUSCH, determined according to Clause 6.1.4.1 of [6, TS38.214] ; - Qm is the modulation order of the PUSCH.
[0173] The input bit sequence to rate matching is where r is the code block number, and Nr is the number of coded bits in code block number r.
[0174] Rate matching is performed according to Clause 5.4.1 of 3GPP specification TS 38.212 by setting IBIL=1 and the rate matching output sequence length to where: - CUCI is the number of code blocks for UCI determined according to Clause 5.2.1 of 3GPP specification TS 38.212; - NL is the number of transmission layers of the PUSCH; - Qm is the modulation order of the PUSCH; - EUCI=UL·Q′CSI, 1·Qm..
[0175] The output bit sequence after rate matching is denoted as where Er is the length of rate matching output sequence in code block number r.
[0176] For UCI encoded by Polar code, for CSI part 2 transmission on PUSCH not using repetition type B with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for CSI part 2 transmission, denoted as Q′CSI-part2, is determined as follows: where: - OCSI-2 is the number of bits for CSI part 2; - if OCSI-2≥360, LCSI-2=11; otherwise LCSI-2 is the number of CRC bits for CSI part 2 determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - if the DCI format scheduling the PUSCH transmission includes a CBGTI field indicating that the UE shall not transmit the r-th code block, Kr=0; otherwise, Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - Q′ACK / CG-UCI=Q′ACK if HARQ-ACK is present for transmission on the same PUSCH with UL-SCH and without CG-UCI, where Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK transmitted on the PUSCH as defined in clause 6.3.2.4.1.1 of 3GPP specification TS 38.212 if number of HARQ-ACK information bits is more than 2, and Q′ACK=0 if the number of HARQ-ACK information bits is 1 or 2 bits; or - Q′ACK / CG-UCI=Q′ACK if both HARQ-ACK and CG-UCI are present on the same PUSCH with UL-SCH, where Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK and CG-UCI transmitted on the PUSCH as defined in clause 6.3.2.4.1.5 of 3GPP specification TS 38.212; or - Q′ACK / CG-UCI=Q′CG-UCI if CG-UCI is present on the same PUSCH with UL- SCH and without HARQ-ACK, where Q′CG-UCI is the number of coded modulation symbols per layer for CG-UCI transmitted on the PUSCH as defined in clause 6.3.2.4.1.4 of 3GPP specification TS 38.212; - Q′CSI-1 is the number of coded modulation symbols per layer for CSI part 1 transmitted on the PUSCH; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - ɑ is configured by higher layer parameter scaling.
[0177] For CSI part 2 transmission on PUSCH not using repetition type B with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for CSI part 2 transmission, denoted as Q′CSI-part2, is determined as follows: where: - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the CSI part 2 transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the CSI part 2 transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0178] For CSI part 2 transmission on an actual repetition of a PUSCH with repetition Type B with UL-SCH, the number of coded modulation symbols per layer for CSI part 2 transmission, denoted as Q′CSI-part2, is determined as follows: where: - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission assuming a nominal repetition without segmentation, and is the total number of OFDM symbols in a nominal repetition of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH assuming a nominal repetition without segmentation, - for any OFDM symbol that does not carry DMRS of the PUSCH assuming a nominal repetition without segmentation, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission assuming a nominal repetition without segmentation; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the actual repetition of the PUSCH transmission, and is the total number of OFDM symbols in the actual repetition of the PUSCH transmission, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the actual repetition of the PUSCH transmission, - for any OFDM symbol that does not carry DMRS of the actual repetition of the PUSCH transmission, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the actual repetition of the PUSCH transmission; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0179] For CSI part 2 transmission on PUSCH without UL-SCH, the number of coded modulation symbols per layer for CSI part 2 transmission, denoted as Q′CSI-part2, is determined as follows: where: - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK transmitted on the PUSCH if number of HARQ-ACK information bits is more than 2, and Q′ACK=0 if the number of HARQ-ACK information bits is 1 or 2 bits; - Q′CSI-1 is the number of coded modulation symbols per layer for CSI part 1 transmitted on the PUSCH; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH,
[0180] The input bit sequence to rate matching is where r is the code block number, and Nr is the number of coded bits in code block number r.
[0181] Rate matching is performed according to Clause 5.4.1 of 3GPP specification TS 38.212 by setting IBIL=1 and the rate matching output sequence length to where: - CUCI is the number of code blocks for UCI determined according to Clause 5.2.1 of 3GPP specification TS 38.212; - NL is the number of transmission layers of the PUSCH; - Qm is the modulation order of the PUSCH; - EUCI=NL·Q′CSI, 2·Qm.
[0182] For UCI encoded by Polar code, for CG-UCI transmission on PUSCH with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for CG-UCI transmission, denoted as Q′CG-UCI, is determined as follows: where: - OCG-UCI is the number of CG-UCI bits; - LCG-UCI is the number of CRC bits for CG-UCI determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured by higher layer parameter scaling; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission.
[0183] For CG-UCI transmission on PUSCH with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for CG-UCI transmission, denoted as Q′CG-UCI, is determined as follows: where: - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the CG-UCI transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the CG-UCI transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission of TB processing over multiple slots in the slot with the CG-UCI transmission; - and all the other notations in the formula are defined the same as for PUSCH with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0184] The input bit sequence to rate matching is where r is the code block number, and Nr is the number of coded bits in code block number r.
[0185] Rate matching is performed according to Clause 5.4.1 of 3GPP specification TS 38.212 by setting IBIL=1 and the rate matching output sequence length to where: - CUCI is the number of code blocks for UCI determined according to Clause 5.2.1 of 3GPP specification TS 38.212; - NL is the number of transmission layers of the PUSCH; - Qm is the modulation order of the PUSCH; - EUCI=NL·Q′CG-UCI·Qm.
[0186] For UCI encoded by Polar code, for HARQ-ACK and CG-UCI transmission on PUSCH with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for HARQ-ACK and CG-UCI transmission, denoted as Q′ACK, is determined as follows: where: - OACK is the number of HARQ-ACK bits; - OCG-UCI is the number of CG-UCI bits; - if OACK+OCG-UCI>360, LACK=11; otherwise LACK is the number of CRC bits for HARQ-ACK and CG-UCI determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured by higher layer parameter scaling; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission.
[0187] For HARQ-ACK and CG-UCI transmission on PUSCH with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for HARQ-ACK and CG-UCI transmission, denoted as Q′ACK, is determined as follows: where: - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK and CG-UCI transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK and CG-UCI transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK and CG-UCI transmission; - and all the other notations in the formula are defined the same as for PUSCH with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0188] The input bit sequence to rate matching is where r is the code block number, and Nr is the number of coded bits in code block number r.
[0189] Rate matching is performed according to Clause 5.4.1 of 3GPP specification TS 38.212 by setting IBIL=1 and the rate matching output sequence length to where: - CUCI is the number of code blocks for UCI determined according to Clause 5.2.1 of 3GPP specification TS 38.212; - NL is the number of transmission layers of the PUSCH; - Qm is the modulation order of the PUSCH; - EUCI=NL·Q′ACK·Qm.
[0190] The output bit sequence after rate matching is denoted as where Er is the length of rate matching output sequence in code block number r.
[0191] For UCI encoded by channel coding of small block lengths, for HARQ-ACK transmission on PUSCH, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as Q′ACK, is determined as above, by setting the number of CRC bits L=0.
[0192] For UCI encoded by channel coding of small block lengths, for CSI part 1 transmission on PUSCH, the number of coded modulation symbols per layer for CSI part 1 transmission, denoted as Q′CSI, 1, is determined according to above, by setting the number of CRC bits L=0.
[0193] For UCI encoded by channel coding of small block lengths, for CSI part 2 transmission on PUSCH, the number of coded modulation symbols per layer for CSI part 2 transmission, denoted as Q′CSI, 2, is determined according to above.
[0194] For UCI encoded by channel coding of small block lengths, for CG-UCI transmission on PUSCH, the number of coded modulation symbols per layer for CG-UCI transmission, denoted as Q′CG-UCI, is determined according to above, by setting the number of CRC bits LCG-UCI=0.
[0195] For UCI encoded by channel coding of small block lengths, for HARQ-ACK and CG-UCI transmission on PUSCH, the number of coded modulation symbols per layer for HARQ-ACK and CG-UCI transmission, denoted as Q′ACK, is determined according to above, by setting the number of CRC bits LACK=0.
[0196] The code block concatenation procedure consists of sequentially concatenating the rate matching outputs for the different code blocks. In the multiplexing of coded UCI bits to PUSCH, HARQ-ACK is mapped from the first symbol after the first DMRS, then CSI part 1 is mapped from the first symbol of PUSCH, then CSI part 2 is mapped.
[0197] As mentioned above, a legacy UCI is generated through a series of processes including source encoding, channel coding, and modulation. In the source encoding process, the raw information of legacy UCI, such as HARQ-ACK / NACK, SR, CSI, etc., is converted into a bit sequence suitable for channel transmission. In the channel coding process, the bit sequence output from source encoding is then mapped to specific code bitsduring the channel coding process. Depending on the selected channel coding scheme, such as polar code, redundancy bits are added to the data to form the coded bits. Additionally, rate matching is performed (if necessary) based on the UCI load and the resource allocation of PUSCH / PUCCH to ensure that the encoded data fits the specific transmission resources. The modulation process converts the coded bits sequence into a signal waveform suitable for transmission over the wireless channel. For example, the coded bits sequence is mapped to modulation symbols according to the modulation scheme; then OFDM symbols are formed by adding a cyclic prefix and performing Inverse Fast Fourier Transform (IFFT) are carried out to form the OFDM symbols; finally, the OFDM symbols are mapped onto subcarriers to create the final wireless signal for transmission over the physical channel.
[0198] Hereinbefore, the transmission schemes for legacy UCI are illustrated. The CSI in the legacy UCI may be referred to as legacy CSI. Hereinafter, some aspects regarding a new type of CSI will be discussed.
[0199] CSI compression and semantic communication are currently under development, with potential applications in AI use cases. The fundamental goal of CSI compression is to reduce feedback overhead and improve system performance by utilizing two-sided AI / ML models for compressing and reconstructing CSI. The two-sided AI / ML models consist of an AI / ML-based CSI generation part and an AI / ML-based CSI reconstruction part. The CSI generation part generates CSI feedback information, while the CSI reconstruction part reconstructs the CSI from the received CSI feedback information. At least for inference, the CSI generation part is located at the UE side, and the CSI reconstruction part is located at the gNB side.
[0200] FIG. 1E illustrates an example of an inference procedure for CSI compression associated with aspects of the present disclosure. For generating the input of CSI generation model, some further pre-processing on the measured channel may be applied; for the output of the CSI reconstruction model, some further post-processing may also be applied. Besides CSI feedback of quantization output, there may also be other CSI / PMI related information transmitted. FIG. 1E is merely an example of the CSI compression inference procedure. Other examples are possible, e.g., merging quantization / de-quantization into the inference for CSI generation / reconstruction in CSI generation model / CSI reconstruction model, respectively.
[0201] Examples of AI / ML model inputs for the CSI generation part and outputs for the CSI reconstruction part may include raw channel matrices (e.g., with dimensions Tx, Rx, and frequency unit) or a precoding matrix. After quantization, a PMI may be determined as the CSI to be fed back to the gNB, which is transmitted over PUCCH or PUSCH.
[0202] Semantic communication, under development in 6G, aims to overcome “Shannon’s trap” by identifying and utilizing the meaning of messages in Internet communication. This approach extracts semantic information from text, images, video, or audio, thus reducing the use of available time / frequency resources. Leveraging neural networks at both the transmitter and receiver, semantic communication can improve performance in low SINR regions.
[0203] Joint source and channel coding (JSCC) , a key technology in the semantic domain, can further enhance performance. In the context of CSI, compression can be seen as source encoding. Using JSCC in CSI compression (i.e., applying a single AI / ML model for both source and channel encoding) can significantly improve CSI compression gains. FIG. 1F illustrates an example of a joint CSI compression and channel coding procedure associated with aspects of the present disclosure. In the example shown in FIG. 1F, the joint encoder / decoder part may be realized by an AI / ML model. FIG. 1F is merely an example of the joint CSI compression and channel coding procedure. Other examples are possible, e.g., the modulation may be included in the joint encoder to solve the quantization error problem.
[0204] The input of the joint encoder may include raw channel matrix, or precoding matrix, or even CSI-RS signals. The output of the joint encoder may be a new type of CSI (e.g., a new type of PMI) that has been encoded using an AI / ML model, and without the need for the legacy channel coding. As used herein, the new type of CSI may be referred to as “AI / ML-based CSI” . The term “AI / ML-based CSI” may refer to CSI processed or encoded using an AI / ML model (e.g., in FIGS. 1E or 1F or other AI / ML use cases) and may be used interchangeably with other terms such as “compressed CSI” “JSCC-CSI” or “JSCC-encoded CSI” and so on.
[0205] Considering the above, enhancements on CSI transmission are needed, particularly in the following aspects.
[0206] In a first aspect, PUCCH resource to be used for a legacy UCI feedback is determined based on the number of initial information bits before encoding. However, for the new CSI type, the number of initial bits before encoding may not be known, as the input to the joint encoder could include raw channel matrices, precoding matrices, or CSI-RS signals. How to determine the appropriate PUCCH resource allocation in such cases requires further investigation.
[0207] In a second aspect, in legacy systems, a UCI bit sequence is divided into two code blocks before channel coding when the number of initial information bits is greater than or equal to 12. However, for the new CSI type, the input before encoding is a matrix, precoding matrices, or CSI-RS signals, making the code block segmentation difficult. Even if the input is converted into bits as the input, directly dividing it into two code blocks could destroy the correlation between CSI. Therefore, the code block segmentation methods s need to be developed for encoding the new CSI types.
[0208] In a third aspect, after encoding by the AI / ML model, in the rate matching procedure, the first or last bits are dropped if the available transmission resource is insufficient for transmitting the encoded bits. However, certain important bits after JSCC encoding may be crucial for decoding accuracy, and dropping them could significantly affect the decoding result. It is important to explore how to perform rate matching while ensuring that important bits are not discarded, and the encoded bits fit within the available transmission resources.
[0209] In a fourth aspect, whether the new type of CSI and legacy UCI (e.g., legacy CSI, HARQ-ACK, SR) should be multiplexed in the same PUCCH or PUSCH resource should be considered. If the new type of CSI and legacy UCI are multiplexed in the same PUCCH or PUSCH resource, how to allocation of resources for both types of UCI needs to be designed.
[0210] In view of the above, embodiments of the present disclosure propose a solution supporting transmitting AI / ML-based CSI. Embodiments of the present disclosure will be described with reference to FIGS. 2-7 in various aspects regarding how to generate the transmitted bits for AI / ML-based CSI and how to multiplex the AI / ML-based CSI with legacy UCI.
[0211] FIG. 2 illustrates an example of signalling procedure 200 for CSI transmission in accordance with aspects of the present disclosure. For the purpose of discussion, the procedure 200 will be described with reference to FIG. 1A, and the procedure 200 may involve a UE 104 and a network entity 102 as shown in FIG. 1A. The network entity may be implemented as a base station. It is to be understood that the steps and the order of the steps in FIG. 2 are merely for illustration, and not for limitation. It is to be understood that procedure 200 may further include additional blocks not shown and / or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
[0212] As shown in FIG. 2, the UE 104 determines (202) a transmission resource for a UCI 208. The UCI 208 is associated with at least one first CSI generated by a first AI / ML-based model. The at least one first CSI is produced or encoded by an AI / ML model and may be referred to as at least one AI / ML-based CSI. Similarly, the base station 102 determines (204) the transmission resource for the UCI 208. The UE 104 transmits (206) the UCI 208 on the transmission resource to the base station 102. Accordingly, the base station 102 receives (210) the UCI 208 on the transmission resource from the UE 104 and decodes (212) the at least one AI / ML-based CSI from the UCI 208 using a second AI / ML-based model. In this way, a scheme for AI / ML-based CSI transmission is supported, thus reducing the resource overhead for CSI transmission.
[0213] In some embodiments, the first AI / ML-based model may include a CSI generation model for CSI compression. The second AI / ML-based model may include a CSI reconstruction model for CSI decompression. Alternatively or additionally, the first AI / ML-based model may include a CSI generation model for joint source and channel coding (JSCC) . The second AI / ML-based model may include a CSI reconstruction model for joint source and channel decoding. With the CSI generation model for JSCC, no separate channel coding procedure is needed before the CSI is transmitted.
[0214] The AI / ML-based models on the base station side and UE side are designed to ensure encoding-decoding compatibility. Some embodiments of the present disclosure will be illustrated focusing on the encoding process of the AI / ML-based model on the UE side. The decoding process on the base station side follows a corresponding scheme, based on similar principles, and thus its detailed description is omitted. It should be understood that the decoding process on the base station side based on similar principles is within the scope of the disclosure.
[0215] In some embodiments, the transmission resource may include a PUCCH transmission resource. Alternatively, the transmission resource may include a PUSCH transmission resource. For example, the UE 104 determines a PUCCH resource or a PUSCH resource used for transmitting the UCI 208.
[0216] In some embodiments, the UE 104 may determine first at least one transmission resource for the at least one AI / ML-based CSI, and determine second at least one transmission resource for at least one second UCI. In some implementations, the at least one second UCI may include at least one of the following: HARQ-ACK information; SR information; or at least one second CSI. The at least one second UCI may be implemented as at least one legacy UCI, and the at least one second CSI may be implemented as at least one legacy CSI. If the first at least one transmission resource is overlapped with the second at least one transmission resource, the UE 104 may determine the UCI 208 based on the at least one AI / ML-based CSI and the at least one second UCI. For example, the UE 104 may determine whether the AL / ML-based CSI and the legacy UCI should be transmitted together in a same UCI transmitted in a same resource.
[0217] In some implementations, the UCI 208 may include the at least one AI / ML-based CSI, and one or more legacy UCIs among the at least one legacy UCI excluding the at least one legacy CSI. In other words, the AL / ML-based CSI may be multiplexed with legacy UCI except legacy CSI, e.g., HARQ-ACK and SR. For example, HARQ-ACK and SR may be transmitted together with the AL / ML-based CSI on a same resource, but the legacy CSI may not be transmitted together with the AL / ML-based CSI on a same resource.
[0218] In some implementations, the at least one legacy CSI and the at least one AI / ML-based CSI are associated with different CSI quantities. The UCI 208 may include the at least one AI / ML-based CSI and the at least one legacy UCI. In other words, the AL / ML-based CSI may be multiplexed with legacy CSI if they include different quantities. For example, the AL / ML-based CSI may include PMI, and the legacy CSI may include CQI or RI. If the AL / ML-based CSI and legacy CSI include the same quantity, one of them should be dropped when overlapping. In some implementations, if one or more legacy CSIs among the at least one legacy CSI and one or more AI / ML-based CSIs among the at least one AI / ML-based CSI are associated with the same CSI quantities, the UCI 208 may include the at least one AI / ML-based CSI and the at least one legacy UCI excluding the one or more legacy CSIs. For example, an AI / ML-based PMI may have a higher priority than the legacy PMI. If the resource for the AL / ML-based CSI and the resource for the legacy UCI including the legacy PMI are overlapping, the legacy PMI is dropped. Alternatively, if one or more legacy CSIs among the at least one legacy CSI and one or more AI / ML-based CSIs among the at least one AI / ML-based CSI are associated with the same CSI quantities, the UCI 208 may the at least one legacy UCI and the at least one AI / ML-based CSI excluding the one or more AI / ML-based CSIs. For example, an AI / ML-based PMI may have a lower priority than the legacy PMI. If the resource for the AL / ML-based CSI and the resource for the legacy UCI including the legacy PMI are overlapping, the AI / ML-based PMI is dropped. The priorities of the legacy CSI and the AI / ML-based CSI may be predefined or network configured.
[0219] In some implementations, the UCI 208 may include the at least one AI / ML-based CSI. The at least one legacy UCI is not included in the UCI 208. For example, the AL / ML-based CSI may not be multiplexed with legacy UCI, and the AL / ML-based CSI has a higher priority than the legacy UCI. If the resource for the AL / ML-based CSI and the resource for the legacy UCI are overlapping, then the legacy UCI is dropped. Alternatively, the UCI 208 may include the at least one legacy UCI. The at least one AI / ML-based CSI is not included in the UCI 208. For example, the AL / ML-based CSI may not be multiplexed with legacy UCI, and the AL / ML-based CSI has a lower priority than the legacy UCI. If the resource for the AL / ML-based CSI and the resource for the legacy UCI are overlapping, then the AL / ML-based UCI is dropped. The priorities of the legacy UCI and the AI / ML-based CSI may be predefined or network configured.
[0220] In some implementations, the UE 104 may generate at least one further legacy CSI based on channel information associated with the at least one AI / ML-based CSI. The UCI 208 may include the at least one legacy UCI and the generated at least one further legacy CSI. For example, the AL / ML-based CSI may not be multiplexed with legacy UCI. If the resource for the new type of CSI is overlapped with the legacy HARQ-ACK or SR, the new type of CSI is fallback to legacy CSI, thus using legacy channel encoding method to generate the target CSI.
[0221] In some embodiments, the UE 104 may determine at least one PUCCH resource set for UCI transmissions. The transmission resource is comprised in the at least one PUCCH resource set.
[0222] Alternatively, the UE 104 may determine at least one PUCCH resource set for transmissions of AI / ML-based CSIs. The transmission resource is comprised in the at least one PUCCH resource set, and the UCI 208 may include the at least one AI / ML-based CSI. In other words, at least one PUCCH resource set may be configured for transmitting AI / ML-based CSI (s) separate from the PUCCH resource set configured for transmitting legacy UCI. The specific PUCCH resource sets should be used when there is AI / ML-based CSI (s) to be transmitted.
[0223] In some implementations, the at least one PUCCH resource set is associated with transmissions of AI / ML-based CSIs only. In other words, the UE may determine the PUCCH resource from one or multiple PUCCH resource sets configured for transmitting AI / ML-based CSI (s) only. The PUCCH resource sets should be used when there is only AI / ML-based CSI (s) to be transmitted in a time unit.
[0224] In some implementations, the at least one PUCCH resource set is associated with transmissions of AI / ML-based CSIs multiplexed with transmissions legacy UCIs. In other words, the UE may determine the PUCCH resource from one or multiple PUCCH resource sets configured for transmitting AI / ML-based CSI (s) multiplexed with legacy UCI. The PUCCH resource sets should be used when there is AI / ML-based CSI (s) multiplexed with legacy UCI to be transmitted in a time unit.
[0225] In some implementations, the at least one PUCCH resource set is associated with transmissions of AI / ML-based CSIs. In other words, the UE may determine the PUCCH resource from one or multiple PUCCH resource sets configured for transmitting AI / ML-based CSI (s) or AI / ML-based CSI (s) multiplexed with legacy UCI. The PUCCH resource sets should be used when there is at least AI / ML-based CSI (s) (e.g., only AI / ML-based CSI (s) , or AI / ML-based CSI (s) multiplexed with legacy UCI) to be transmitted in a time unit.
[0226] In some embodiments, the transmission resource for the UCI 208 is a PUCCH resource determined at least based on a first parameter for the at least one AI / ML-based CSI. For example, the UE 104 determines a PUCCH resource used for transmitting the UCI 208 according to a parameter N.
[0227] In some implementations, the first parameter may include a number of bits associated with at least one output of the first AI / ML-based model. For example, the first AI / ML-based model may be a CSI generation model for CSI compression. The output of the first AI / ML-based model is processed by channel encoding and modulation as legacy UCI. The parameter N may be the number of information bits after the AI / ML model processing. The UE 104 determines a PUCCH resource used for transmitting the UCI 208 based on the output information bit N.
[0228] In some implementations, the first parameter may include a number of coded bits associated with at least one encoded output of the first AI / ML-based model. In other words, the parameter N may be the number of coded CSI bits of the at least one AI / ML-based CSI. In some implementations, the number of coded bits associated with the at least one encoded output of the first AI / ML-based model may be associated with a matrix dimension of the at least one encoded output and a modulation order of the transmission resource. In some examples, the output of the encoded AL / ML model may be a matrix, then the number of coded CSI bits may be determined according to the matrix. Assuming the Matrix dimensions of the AL / ML model output is W, then the number of coding bits of an AI / ML-based CSI is W*Qm, wherein Qm is the modulation order of the transmission resource. Or Assuming the parameters in the Matrix of the AL / ML model output is W, then the number of coding bits of an AI / ML-based CSI is W. The UE 104 determines a PUCCH resource used for transmitting the UCI 208 at least based on the number N of coded CSI bits of the at least one AI / ML-based CSI. In some implementations, the first parameter may include a number of bits associated with at least one input of the first AI / ML-based model. In other words, the parameter N may be the number of information bits before AI / ML model processing. For example, the UE 104 determines a PUCCH resource used for transmitting the UCI 208 based on the initial information bit N.
[0229] In some implementations, the first parameter may include a number of bits associated with at least one output of the first AI / ML-based model and a scaling factor. In some implementations, the scaling factor is predefined or configured by the base station 102. For example, the first AI / ML-based model may be a CSI generation model for CSI compression. The output of the first AI / ML-based model is processed by channel encoding and modulation as legacy UCI. The parameter N may be the number of information bits after the AI / ML model processing and the scaling factor is γ. The UE 104 determines a PUCCH resource used for transmitting the UCI 208 based on the output information bit N and the scaling factor γ. The scaling factor γ may be configured by the base station 102 or predefined.
[0230] In some implementations, the first parameter may include a number of coded bits associated with at least one encoded output of the first AI / ML-based model and a scaling factor. In some implementations, the number of coded bits associated with the at least one encoded output of the first AI / ML-based model may be associated with a matrix dimension of the at least one encoded output and a modulation order of the transmission resource. In some implementations, the scaling factor is predefined or configured by the base station 102. For example, the number of coded CSI bits of the at least one AI / ML-based CSI is N and the scaling factor is γ. The UE 104 determines a PUCCH resource used for transmitting the UCI 208 at least based on the number N of coded CSI bits of the at least one AI / ML-based CSI and the scaling factor γ. The scaling factor γ may be configured by the base station 102 or predefined.
[0231] In some implementations, the first parameter may include a predefined bit length value. For example, the bit length for each AI / ML-based CSI report is predefined as P, then if there are k AI / ML-based CSI reports in a resource, the total length of indicated bit length for the at least one AI / ML-based CSI report is N=k*P. The UE 104 determines a PUCCH resource used for transmitting the UCI 208 at least based on the parameter N=k*P.
[0232] In some implementations, the first parameter may include a bit length value indicated by the base station 102. For example, the network entity 102 may indicate the indicated bit length P for each AI / ML-based CSI report, then if there are k AI / ML-based CSI reports in a resource, the total length of indicated bit length for the at least one AI / ML-based CSI report is N=k*P. The UE 104 determines a PUCCH resource used for transmitting the UCI 208 at least based on the parameter N=k*P.
[0233] In some implementations, the first parameter may include a number of bits associated with at least one input of the first AI / ML-based model. In other words, the parameter N may be the number of information bits before AI / ML model processing. For example, the UE 104 determines a PUCCH resource used for transmitting the UCI 208 based on the initial information bit N.
[0234] In some implementations, the first parameter may include a number of bits associated with at least one input of the first AI / ML-based model and a scaling factor. In some implementations, the scaling factor is predefined or configured by the base station 102. In other words, the number of initial information bits before AI / ML model processing may be N and the scaling factor is γ. The UE 104 determines a PUCCH resource used for transmitting the UCI 208 at least based on the number N of initial information bits before AI / ML model processing and the scaling factor γ. The scaling factor γ may be configured by the base station 102 or predefined.
[0235] In some embodiments, the UCI 208 may include the at least one AI / ML-based CSI. In some implementations, the UE 104 may determine a resource set based on the first parameter for the at least one AI / ML-based CSI. The transmission resource is comprised in the resource set. Alternatively, the UE 104 may determine the transmission resource based on the first parameter for the at least one AI / ML-based CSI.
[0236] For example, if only AI / ML-based CSI (s) is transmitted in the UCI 208, assuming the coded / output bit length of AI / ML-based CSI (s) is N, then N is used for determining the PUCCH resource. In another example, if only AI / ML-based CSI (s) is transmitted in the UCI 208, assuming the coded / output bit length is N, and the scaling factor γ, then N*γ is used for determining the PUCCH resource. In a further example, if only AI / ML-based CSI (s) is transmitted in the UCI 208, assuming the indicated / predefined bit length of AI / ML-based CSI (s) is N, then N is used for determining the PUCCH resource. The UE 104 may determine one resource set from multiple resource sets or determine one resource from multiple resources according to N or N*γ.
[0237] In some embodiments, the UCI 208 may include the at least one AI / ML-based CSI and one or more legacy UCIs. For example, if both AI / ML-based CSI (s) and legacy UCI (s) should be transmitted in the PUCCH resource, assuming the coded / output (or predefined / indicated) bit length of AI / ML-based CSI (s) is N, and the information bit of legacy UCI (s) is O, then N and O is used for determining the PUCCH resource. In another example, if both AI / ML-based CSI (s) and legacy UCI (s) should be transmitted in the PUCCH resource, assuming the coded / output (or predefined / indicated) bit length of AI / ML-based CSI (s) is N, and the scaling factor is predefined or configured as γ, and the information bit of legacy UCI (s) is O, then N*γ and O is used for determining the PUCCH resource.
[0238] In some implementations, the UE 104 may determine a resource set based on the first parameter for the at least one AI / ML-based CSI and an information bit length of the one or more legacy UCIs. The transmission resource is comprised in the resource set. For example, the UE 104 may determine one resource set from multiple resource sets according to N+O or N*γ+O.
[0239] In some implementations, the UE 104 may determine the transmission resource based on the first parameter for the at least one AI / ML-based CSI and an information bit length of the one or more legacy UCIs. For example, the UE 104 may determine one resource from multiple resources according to N+O or N*γ+O.
[0240] In some implementations, the UE 104 may determine a resource set group based on the first parameter for the at least one AI / ML-based CSI, and determine a resource set among the resource set group based on an information bit length of the one or more legacy UCIs. The transmission resource is comprised in the resource set. For example, the UE 104 may determine one PUCCH resource set group according to N or N*γ, and then determine a PUCCH resource set from the PUCCH resource set group according to O. FIG. 3 illustrates an example scheme of PUCCH resource set determination for UCI transmission in accordance with aspects of the present disclosure. In the example in FIG. 3, the four configured PUCCH resource sets are divided into two PUCCH resource set groups. JSCC-encoded CSI, HARQ and SR are to be transmitted in one resource. The UE may determine one PUCCH resource set group according to the coded (or predefined / indicated) bit length of JSCC-encoded CSI, and determine one PUCCH resource set from the PUCCH resource set group based on the initial bit number of HARQ and SR.
[0241] In some implementations, the UE 104 may determine a resource set group based on an information bit length of the one or more legacy UCIs, and determine a resource set among the resource set group based on the first parameter for the at least one AI / ML-based CSI. The transmission resource is comprised in the resource set. For example, the UE 104 may determine one PUCCH resource set group according to O, and then determine a PUCCH resource set from the PUCCH resource set group according to N or N*γ. For example, if JSCC-encoded CSI, HARQ and SR are to be transmitted in one resource, the UE may determine one PUCCH resource set group according to the initial bit number of HARQ and SR, and determine one PUCCH resource set from the PUCCH resource set group based on the coded (or predefined / indicated) bit length of JSCC-encoded CSI.
[0242] In some embodiments, the UE 104 may encode each part among at least one part of channel information separately based on the first AI / ML-based model. The at least one AI / ML-based CSI may include at least one encoded part of the channel information. In some implementations, each part may include respective channel information for a subband. Alternatively, each part may include respective channel information for a CSI report. Alternatively, each part may include respective channel information for a sub-CSI report configuration. In other words, the UE 104 may encode each part of the channel information separately. The channel information may include C (one or multiple) parts. Each part is corresponding to a channel information for each sub band, or each part is corresponding to a channel information for each CSI report, or each part is corresponding to a channel information for each sub-CSI report configuration.
[0243] In some embodiments, the UE 104 may determine a number of coded modulation symbols for the at least one AI / ML-based CSI based on a first parameter for the at least one AI / ML-based CSI. In other words, for AI / ML-based CSI transmission on PUSCH, the number of coded modulation symbols for AI / ML-based CSI transmission may be determined according to parameter N. In some implementations, the first parameter may include a number of bits associated with at least one output of the first AI / ML-based model. Alternatively, the first parameter may include a number of coded bits associated with at least one encoded output of the first AI / ML-based model. Alternatively, the first parameter may include a number of bits associated with at least one output of the first AI / ML-based model and a scaling factor. Alternatively, the first parameter may include a number of coded bits associated with at least one encoded output of the first AI / ML-based model and a scaling factor. Alternatively, the first parameter may include a predefined bit length value. Alternatively, the first parameter may include a bit length value indicated by the base station 102. Alternatively, the first parameter may include a number of bits associated with at least one input of the first AI / ML-based model. Alternatively, the first parameter may include a number of bits associated with at least one input of the first AI / ML-based model and a scaling factor. For example, for AI / ML-based CSI transmission on PUSCH, the number of coded modulation symbols Q′jscc-csi may be determined as: Q′jscc-csi=N or Q′jscc-csi=N / Qm, wherein N is the first parameter. No rate matching for AI / ML-based CSI is needed, because the output of the AI / ML encoder model is equal to the coded bits. FIG. 4 illustrates an example procedure of multiplexing JSCC-encoded CSI bits on a PUSCH resource in accordance with aspects of the present disclosure. The OFDM symbols occupied by the JSCC-encoded CSI is determined by the output sequence length of the AI / ML encoder model, thus no matching for the output of the AI / ML encoder model is needed.
[0244] In some examples, the UCI 208 further may include one or more legacy UCIs, and the UE 104 may determine respective numbers of coded modulation symbols for the one or more legacy UCIs based on the number of coded modulation symbols for the at least one AI / ML-based CSI. In other words, if the AI / ML-based CSI is multiplexed with legacy UCI, the number of coded modulation symbols for legacy UCI may be determined according to the number of coded modulation symbols for AI / ML-based CSI. The rate matching output sequence length for legacy UCI may be determined based on the number of coded modulation symbols for legacy UCI.
[0245] In a specific example, for UCI encoded by Polar code, for HARQ-ACK transmission on PUSCH not using repetition type B with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as Q′ACK, is determined as follows: where: - OACK is the number of HARQ-ACK bits; - if OACK≥360, LACK=11; otherwise LACK is the number of CRC bits for HARQ- ACK determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - if the DCI format scheduling the PUSCH transmission includes a CBGTI field indicating that the UE shall not transmit the r-th code block, Kr=0; otherwise, Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured by higher layer parameter scaling; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission.
[0246] For HARQ-ACK transmission on PUSCH not using repetition type B with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as Q′ACK, is determined as follows: where: - - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0247] For HARQ-ACK transmission on an actual repetition of a PUSCH with repetition Type B with UL-SCH, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as Q′ACK, is determined as follows: where: - - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission assuming a nominal repetition without segmentation, and is the total number of OFDM symbols in a nominal repetition of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH assuming a nominal repetition without segmentation, - for any OFDM symbol that does not carry DMRS of the PUSCH assuming a nominal repetition without segmentation, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission assuming a nominal repetition without segmentation; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the actual repetition of the PUSCH transmission, and is the total number of OFDM symbols in the actual repetition of the PUSCH transmission, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the actual repetition of the PUSCH transmission, - for any OFDM symbol that does not carry DMRS of the actual repetition of the PUSCH transmission, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the actual repetition of the PUSCH transmission; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0248] For HARQ-ACK transmission on PUSCH without UL-SCH, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as Q′ACK, is determined as follows: where: - OACK is the number of HARQ-ACK bits; - if OACK≥360, LACK=11; otherwise LACK is the number of CRC bits for HARQ- ACK defined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; ; - - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, -l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission; - R is the code rate of the PUSCH; - Qm is the modulation order of the PUSCH; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - α is configured by higher layer parameter scaling.
[0249] For HARQ-ACK, the input bit sequence to rate matching is where r is the code block number, and Nr is the number of coded bits in code block number r. Rate matching is performed according to Clause 5.4.1 of 3GPP specification TS 38.212 by setting IBIL=1 and the rate matching output sequence length to where CUCI is the number of code blocks determined according to Clause 5.2.1 of 3GPP specification TS 38.212; NL is the number of transmission layers of the PUSCH; Qm is the modulation order of the PUSCH; EUCI=NL·Q′ACK·Qm. The output bit sequence after rate matching is denoted as where Er is the length of rate matching output sequence in code block number r.
[0250] For UCI encoded by Polar code, for CSI part 1 transmission on PUSCH not using repetition type B with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for CSI part 1 transmission, denoted as Q′CSI-1, is determined as follows: where: - OCSI-1 is the number of bits for CSI part 1; - if OCSI-1≥360, LCSI-1=11; otherwise LCSI-1 is the number of CRC bits for CSI part 1 determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - if the DCI format scheduling the PUSCH transmission includes a CBGTI field indicating that the UE shall not transmit the r-th code block, Kr=0; otherwise, Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - Q′ACK / CG-UCI=Q′ACK if HARQ-ACK is present for transmission on the same PUSCH with UL-SCH and without CG-UCI, where Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK transmitted on the PUSCH as defined in clause 6.3.2.4.1.1 of 3GPP specification TS 38.212 if number of HARQ-ACK information bits is more than 2, and if the number of HARQ-ACK information bits is no more than 2 bits, where is the number of reserved resource elements for potential HARQ-ACK transmission in OFDM symbol l, for in the PUSCH transmission, defined in Clause 6.2.7 of 3GPP specification TS 38.212; or - Q′ACK / CG-UCI=Q′ACK if both HARQ-ACK and CG-UCI are present on the same PUSCH with UL-SCH, where Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK and CG-UCI transmitted on the PUSCH; or - Q′ACK / CG-UCI=Q′CG-UCI if CG-UCI is present on the same PUSCH with UL- SCH and without HARQ-ACK, where Q′CG-UCI is the number of coded modulation symbols per layer for CG-UCI transmitted on the PUSCH; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured by higher layer parameter scaling.
[0251] For CSI part 1 transmission on PUSCH not using repetition type B with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for CSI part 1 transmission, denoted as Q′CSI-1, is determined as follows: where: - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the CSI part 1 transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the CSI part 1 transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0252] For CSI part 1 transmission on an actual repetition of a PUSCH with repetition Type B with UL-SCH, the number of coded modulation symbols per layer for CSI part 1 transmission, denoted as Q′CSI-1, is determined as follows: where: - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission assuming a nominal repetition without segmentation, and is the total number of OFDM symbols in a nominal repetition of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH assuming a nominal repetition without segmentation, - for any OFDM symbol that does not carry DMRS of the PUSCH assuming a nominal repetition without segmentation, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission assuming a nominal repetition without segmentation; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the actual repetition of the PUSCH transmission, and is the total number of OFDM symbols in the actual repetition of the PUSCH transmission, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the actual repetition of the PUSCH transmission, - for any OFDM symbol that does not carry DMRS of the actual repetition of the PUSCH transmission, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the actual repetition of the PUSCH transmission; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0253] For CSI part 1 transmission on PUSCH without UL-SCH, the number of coded modulation symbols per layer for CSI part 1 transmission, denoted as Q′CSI-1, is determined as follows: if there is CSI part 2 to be transmitted on the PUSCH, else end if where: - OCSI-1 is the number of bits for CSI part 1; - if OCSI-1≥360, LCSI-1=11; otherwise LCSI-1 is the number of CRC bits for CSI part 1 determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK transmitted on the PUSCH if number of HARQ-ACK information bits is more than 2, and if the number of HARQ-ACK information bits is no more than 2 bits, where is the number of reserved resource elements for potential HARQ-ACK transmission in OFDM symbol l, for in the PUSCH transmission, defined in Clause 6.2.7 of 3GPP specification TS 38.212; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - R is the code rate of the PUSCH; - Qm is the modulation order of the PUSCH.
[0254] For CSI part 1, the input bit sequence to rate matching is where r is the code block number, and Nr is the number of coded bits in code block number r. Rate matching is performed according to Clause 5.4.1 of 3GPP specification TS 38.212 by setting IBIL=1 and the rate matching output sequence length to where CUCI is the number of code blocks determined according to Clause 5.2.1 of 3GPP specification TS 38.212; NL is the number of transmission layers of the PUSCH; Qm is the modulation order of the PUSCH; EUCI=NL·Q′CSI, 1·Qm. The output bit sequence after rate matching is denoted as where Er is the length of rate matching output sequence in code block number r.
[0255] For UCI encoded by Polar code, for CSI part 2 transmission on PUSCH not using repetition type B with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for CSI part 2 transmission, denoted as Q′CSI-2, is determined as follows: where: - OCSI-2 is the number of bits for CSI part 2; - if OCSI-2≥360, LCSI-2=11; otherwise LCSI-2 is the number of CRC bits for CSI part 2 determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - if the DCI format scheduling the PUSCH transmission includes a CBGTI field indicating that the UE shall not transmit the r-th code block, Kr=0; otherwise, Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - Q′ACK / CG-UCI=Q′ACK if HARQ-ACK is present for transmission on the same PUSCH with UL-SCH and without CG-UCI, where Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK transmitted on the PUSCH as defined in clause 6.3.2.4.1.1 of 3GPP specification TS 38.212 if number of HARQ-ACK information bits is more than 2, and Q′ACK=0 if the number of HARQ-ACK information bits is 1 or 2 bits; or - Q′ACK / CG-UCI=Q′ACK if both HARQ-ACK and CG-UCI are present on the same PUSCH with UL-SCH, where Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK and CG-UCI transmitted on the PUSCH; or - Q′ACK / CG-UCI=Q′CG-UCI if CG-UCI is present on the same PUSCH with UL- SCH and without HARQ-ACK, where Q′CG-UCI is the number of coded modulation symbols per layer for CG-UCI transmitted on the PUSCH; - Q′ACK / CG-UCI=Q′CG-UCI if CG-UCI is present on the same PUSCH with UL- SCH and without HARQ-ACK, where Q′CG-UCI is the number of coded modulation symbols per layer for CG-UCI transmitted on the PUSCH; - Q′CSI-1 is the number of coded modulation symbols per layer for CSI part 1 transmitted on the PUSCH; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol I, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured by higher layer parameter scaling.
[0256] For CSI part 2 transmission on PUSCH not using repetition type B with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for CSI part 2 transmission, denoted as Q′CSI-2, is determined as follows: where: - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the CSI part 2 transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the CSI part 2 transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0257] For CSI part 2 transmission on an actual repetition of a PUSCH with repetition Type B with UL-SCH, the number of coded modulation symbols per layer for CSI part 2 transmission, denoted as Q′CSI-2, is determined as follows: where: - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission assuming a nominal repetition without segmentation, and is the total number of OFDM symbols in a nominal repetition of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH assuming a nominal repetition without segmentation, - for any OFDM symbol that does not carry DMRS of the PUSCH assuming a nominal repetition without segmentation, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission assuming a nominal repetition without segmentation; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the actual repetition of the PUSCH transmission, and is the total number of OFDM symbols in the actual repetition of the PUSCH transmission, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the actual repetition of the PUSCH transmission, - for any OFDM symbol that does not carry DMRS of the actual repetition of the PUSCH transmission, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the actual repetition of the PUSCH transmission; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0258] For CSI part 2 transmission on PUSCH without UL-SCH, the number of coded modulation symbols per layer for CSI part 2 transmission, denoted as Q′CSI-2, is determined as follows: where: - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK transmitted on the PUSCH if number of HARQ-ACK information bits is more than 2, and Q′ACK=0 if the number of HARQ-ACK information bits is 1 or 2 bits; - Q′CSI-1 is the number of coded modulation symbols per layer for CSI part 1 transmitted on the PUSCH; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH,
[0259] For CSI part 2, the input bit sequence to rate matching is where r is the code block number, and Nr is the number of coded bits in code block number r. Rate matching is performed according to Clause 5.4.1 of 3GPP specification TS 38.212 by setting IBIL=1 and the rate matching output sequence length to where CUCI is the number of code blocks determined according to Clause 5.2.1 of 3GPP specification TS 38.212; NL is the number of transmission layers of the PUSCH; Qm is the modulation order of the PUSCH; EUCI=NL·Q′CSI, 2·Qm. The output bit sequence after rate matching is denoted as where Er is the length of rate matching output sequence in code block number r.
[0260] For UCI encoded by Polar code, for CG-UCI transmission on PUSCH with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for CG-UCI transmission, denoted as Q′CG-UCI, is determined as follows: where: - OCG-UCI is the number of CG-UCI bits; - LCG-UCI is the number of CRC bits for CG-UCI determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured by higher layer parameter scaling; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission.
[0261] For CG-UCI transmission on PUSCH with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for CG-UCI transmission, denoted as Q′CG-UCI, is determined as follows: where: - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the CG-UCI transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the CG-UCI transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission of TB processing over multiple slots in the slot with the CG-UCI transmission; - and all the other notations in the formula are defined the same as for PUSCH with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0262] For CG-UCI, the input bit sequence to rate matching is where r is the code block number, and Nr is the number of coded bits in code block number r. Rate matching is performed according to Clause 5.4.1 of 3GPP specification TS 38.212 by setting IBIL=1 and the rate matching output sequence length to where CUCI is the number of code blocks determined according to Clause 5.2.1 of 3GPP specification TS 38.212; NL is the number of transmission layers of the PUSCH; Qm is the modulation order of the PUSCH; EUCI=NL·Q′CG-UCI·Qm. The output bit sequence after rate matching is denoted as where Er is the length of rate matching output sequence in code block number r.
[0263] For UCI encoded by Polar code, for HARQ-ACK and CG-UCI transmission on PUSCH with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for HARQ-ACK and CG-UCI transmission, denoted as Q′ACK, is determined as follows: where: - OACK is the number of HARQ-ACK bits; - OCG-UCI is the number of CG-UCI bits; - if OACK+OCG-UCI>360, LACK=11; otherwise LACK is the number of CRC bits for HARQ-ACK and CG-UCI determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured by higher layer parameter scaling; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission.
[0264] For HARQ-ACK and CG-UCI transmission on PUSCH with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for HARQ-ACK and CG-UCI transmission, denoted as Q′ACK, is determined as follows: where: - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK and CG-UCI transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK and CG-UCI transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK and CG-UCI transmission; - and all the other notations in the formula are defined the same as for PUSCH with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0265] In some embodiments, the UE 104 may determine a rate matching output sequence length for the at least one AI / ML-based CSI. Some example implementations for determining the rate matching output sequence length EUCI are illustrated as below. It should be understood that other methods for determining the rate matching output sequence length EUCI are also possible.
[0266] In some implementations, the UCI 208 may include the at least one AI / ML-based CSI, and the transmission resource may include a PUCCH resource. The rate matching output sequence length for the at least one AI / ML-based CSI may be determined based on a size of the PUCCH resource.
[0267] In a specific example, for the AI / ML-based CSI only transmission on PUCCH, the rate matching output sequence length EUCI may be determined as EUCI=Etot. The Etot may be determined according to the size of PUCCH and may be implemented based on Table 1 shown as below: Table 1: Total rate matching output sequence length Etot
[0268] In another specific example, for the AI / ML-based CSI only transmission on PUCCH, the rate matching output sequence length EUCI may be determined as EUCI=Etot1. The Etot1 may be determined according to the size of PUCCH and may be implemented based on Table 2 or Table 3 shown as below: Table 2: Total rate matching output sequence length Etot1 Table 3: Total rate matching output sequence length Etot1
[0269] In some implementations, the UCI 208 may include the at least one AI / ML-based CSI, and the transmission resource may include a PUCCH resource. The rate matching output sequence length for the at least one AI / ML-based CSI may be determined based on a size of the PUCCH resource and a modulation order of the transmission resource. In a specific example, for the AI / ML-based CSI only transmission on PUCCH, the rate matching output sequence length EUCI may be determined as EUCI=Etot / Qm. The Etot may be determined according to the size of PUCCH and may be implemented based on Table 1, and Qm is the modulation order of the PUCCH resource.
[0270] In some implementations, the UCI 208 may include the at least one AI / ML-based CSI and one or more legacy UCIs, the transmission resource may include a PUCCH resource, and the rate matching output sequence length for the at least one AI / ML-based CSI is a first rate matching output sequence length. The UE 104 may determine the first rate matching output sequence length at least based on the first parameter for the at least one AI / ML-based CSI. In some implementations, the first parameter may include a number of bits associated with at least one output of the first AI / ML-based model. Alternatively, the first parameter may include a number of coded bits associated with at least one encoded output of the first AI / ML-based model. Alternatively, the first parameter may include a number of bits associated with at least one output of the first AI / ML-based model and a scaling factor. Alternatively, the first parameter may include a number of coded bits associated with at least one encoded output of the first AI / ML-based model and a scaling factor. Alternatively, the first parameter may include a predefined bit length value. Alternatively, the first parameter may include a bit length value indicated by the base station 102. Alternatively, the first parameter may include a number of bits associated with at least one input of the first AI / ML-based model. Alternatively, the first parameter may include a number of bits associated with at least one input of the first AI / ML-based model and a scaling factor.
[0271] In some implementations, the UE 104 may determine a second rate matching output sequence length for the one or more legacy UCIs based on a size of the PUCCH resource and the first rate matching output sequence length for the at least one AI / ML-based CSI. In other words, if AI / ML-based CSI (s) and legacy UCI are multiplexed in one time unit, the UE 104 may first determine the rate matching output sequence length for the AI / ML-based CSI (s) , and then determine the rate matching output sequence length for the legacy UCI based on the rate matching output sequence length for the AI / ML-based CSI (s) . FIG. 5A illustrates an example procedure of determining a rate matching output sequence length for JSCC-encoded CSI to be multiplexed with legacy UCI on a PUCCH resource in accordance with aspects of the present disclosure. The rate matching output sequence length EJSCC-CSI for JSCC-encoded CSI is first determined based on the total rate matching output sequence length Etot, and the rate matching output sequence length for legacy UCI is determined based on EJSCC-CSI and Etot.
[0272] In some examples, the first rate matching output sequence length may be determined based on a size of the PUCCH resource, a configured maximum PUCCH coding rate, a first parameter for the at least one AI / ML-based CSI, and a modulation order of the PUCCH resource. In a specific example, for the AI / ML-based CSI (s) multiplexed with legacy UCI on PUCCH, the rate matching output sequence length EUCI for AI / ML-based CSI (s) may be determined as one of the following: or
[0273] The rate matching output sequence length EUCI for legacy UCI may be determined as: wherein: - N is the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) , or the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) multiplexed by a scaling factor; - Qm is the modulation order of the PUCCH; - is the configured maximum PUCCH coding rate; and - Etot is the total rate matching output sequence length e.g., determined based on Table 1, Table 2 or Table 3.
[0274] In some implementations, the UE 104 may determine a second rate matching output sequence length for the one or more legacy UCIs. The first rate matching output sequence length for the at least one AI / ML-based CSI may be determined based on a size of the PUCCH resource and the second rate matching output sequence length. In other words, if AI / ML-based CSI (s) and legacy UCI are multiplexed in one time unit, the UE 104 may first determine the rate matching output sequence length for the legacy UCI, and then determine the rate matching output sequence length for the AI / ML-based CSI (s) based on the rate matching output sequence length for the legacy UCI. FIG. 5B illustrates another example procedure of determining a rate matching output sequence length for JSCC-encoded CSI to be multiplexed with legacy UCI on a PUCCH resource in accordance with aspects of the present disclosure. The rate matching output sequence length Elegacy-UCI for legacy UCI is first determined based on the total rate matching output sequence length Etot, and the rate matching output sequence length for JSCC-encoded CSI is determined based on Elegacy-UCI and Etot.
[0275] In some examples, the first rate matching output sequence length may be determined based on a size of the PUCCH resource, the second rate matching output sequence length, and a modulation order of the PUCCH resource. In some examples, the second rate matching output sequence length may be determined based on a size of the PUCCH resource, a configured maximum PUCCH coding rate, an information bit length of the one or more legacy UCIs, a number of cyclic redundancy check (CRC) bits for encoding information for the one or more legacy UCIs, and a modulation order of the PUCCH resource. In a specific example, for the AI / ML-based CSI (s) multiplexed with legacy UCI on PUCCH, the rate matching output sequence length EUCI for legacy UCI may be determined as:
[0276] The rate matching output sequence length EUCI for AI / ML-based CSI (s) may be determined as one of the following: or wherein: - O is the number of information bits of legacy UCI which is to transmitted together with AI / ML-based CSI (s) in a same resource; - N is the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) , or the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) multiplexed by a scaling factor; - Qm is the modulation order of the PUCCH; - is the configured maximum PUCCH coding rate; and - Etot is the total rate matching output sequence length e.g., determined based on Table 1, Table 2 or Table 3.
[0277] In some embodiments, the UCI 208 may include the at least one AI / ML-based CSI, and the transmission resource may include a PUSCH resource. The rate matching output sequence length for the at least one AI / ML-based CSI is determined based on a number of coded modulation symbols for the at least one AI / ML-based CSI. In other words, for AI / ML-based CSI transmission on PUSCH, the number of coded modulation symbols Q′jscc-csi may be determined according to the PUSCH, and the rate matching output sequence length EUCI may be determined based on the number of coded modulation symbols Q′jscc-csi as: EUCI=L*Q′jscc-csi*Qm or EUCI=L*Q′jscc-csi.
[0278] In some implementations, the number of coded modulation symbols for the at least one AI / ML-based CSI may be determined based on a first parameter for the at least one AI / ML-based CSI; a higher layer parameter scaling associated with AI / ML-based CSI transmission; and a beta offset associated with AI / ML-based CSI transmission. In some examples, the UCI 208 further may include one or more legacy UCIs, and the UE 104 may determine respective numbers of coded modulation symbols for the one or more legacy UCIs based on the number of coded modulation symbols for the at least one AI / ML-based CSI. In other words, the number of coded modulation symbols for legacy UCI may be determined according to the number of coded modulation symbols for AI / ML-based CSI.
[0279] In a specific example, for UCI encoded by Polar code, for AI / ML-based CSI transmission on PUSCH not using repetition type B with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for AI / ML-based CSI transmission, denoted as Q′jscc-csi, is determined as follows: where: - N is the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) , or the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) multiplexed by a scaling factor; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - if the DCI format scheduling the PUSCH transmission includes a CBGTI field indicating that the UE shall not transmit the r-th code block, Kr=0; otherwise, Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured for AI / ML-based CSI by higher layer parameter scaling.
[0280] For AI / ML-based CSI transmission on PUSCH not using repetition type B with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for AI / ML-based CSI transmission, denoted as Q′jscc-csi, is determined as follows: where: - N is the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) , or the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) multiplexed by a scaling factor; - - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0281] For AI / ML-based CSI transmission on an actual repetition of a PUSCH with repetition Type B with UL-SCH, the number of coded modulation symbols per layer for AI / ML-based CSI transmission, denoted as Q′jscc-csi, is determined as follows: where: - N is the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) , or the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) multiplexed by a scaling factor; - - α is configured for AI / ML-based CSI by higher layer parameter scaling; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission assuming a nominal repetition without segmentation, and is the total number of OFDM symbols in a nominal repetition of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH assuming a nominal repetition without segmentation, - for any OFDM symbol that does not carry DMRS of the PUSCH assuming a nominal repetition without segmentation, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission assuming a nominal repetition without segmentation; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the actual repetition of the PUSCH transmission, and is the total number of OFDM symbols in the actual repetition of the PUSCH transmission, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the actual repetition of the PUSCH transmission, - for any OFDM symbol that does not carry DMRS of the actual repetition of the PUSCH transmission, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the actual repetition of the PUSCH transmission; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0282] For AI / ML-based CSI transmission on PUSCH without UL-SCH, the number of coded modulation symbols per layer for AI / ML-based CSI transmission, denoted as Q′jscc-csi, is determined as follows: where: - N is the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) , or the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) multiplexed by a scaling factor; - - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - R is the code rate of the PUSCH; - Qm is the modulation order of the PUSCH; - α is configured for AI / ML-based CSI by higher layer parameter scaling.
[0283] In some implementations, and α may be separately configured for AI / ML-based CSI.
[0284] For UCI encoded by Polar code, for HARQ-ACK transmission on PUSCH not using repetition type B with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as Q′ACK, is determined as follows: where: - OACK is the number of HARQ-ACK bits; - if OACK≥360, LACK=11; otherwise LACK is the number of CRC bits for HARQ- ACK determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - if the DCI format scheduling the PUSCH transmission includes a CBGTI field indicating that the UE shall not transmit the r-th code block, Kr=0; otherwise, Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured by higher layer parameter scaling; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission.
[0285] For HARQ-ACK transmission on PUSCH not using repetition type B with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as Q′ACK, is determined as follows: where: - - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0286] For HARQ-ACK transmission on an actual repetition of a PUSCH with repetition Type B with UL-SCH, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as Q′ACK, is determined as follows: where: - - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission assuming a nominal repetition without segmentation, and is the total number of OFDM symbols in a nominal repetition of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH assuming a nominal repetition without segmentation, - for any OFDM symbol that does not carry DMRS of the PUSCH assuming a nominal repetition without segmentation, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission assuming a nominal repetition without segmentation; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the actual repetition of the PUSCH transmission, and is the total number of OFDM symbols in the actual repetition of the PUSCH transmission, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the actual repetition of the PUSCH transmission, - for any OFDM symbol that does not carry DMRS of the actual repetition of the PUSCH transmission, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the actual repetition of the PUSCH transmission; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0287] For HARQ-ACK transmission on PUSCH without UL-SCH, the number of coded modulation symbols per layer for HARQ-ACK transmission, denoted as Q′ACK, is determined as follows: where: - OACK is the number of HARQ-ACK bits; - if OACK≥360, LACK=11; otherwise LACK is the number of CRC bits for HARQ- ACK defined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; ; - - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission; - R is the code rate of the PUSCH; - Qm is the modulation order of the PUSCH; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - α is configured by higher layer parameter scaling.
[0288] For HARQ-ACK, the input bit sequence to rate matching is where r is the code block number, and Nr is the number of coded bits in code block number r. Rate matching is performed according to Clause 5.4.1 of 3GPP specification TS 38.212 by setting IBIL=1 and the rate matching output sequence length to where CUCI is the number of code blocks determined according to Clause 5.2.1 of 3GPP specification TS 38.212; NL is the number of transmission layers of the PUSCH; Qm is the modulation order of the PUSCH; EUCI=NL·Q′ACK·Qm. The output bit sequence after rate matching is denoted as where Er is the length of rate matching output sequence in code block number r.
[0289] For UCI encoded by Polar code, for CSI part 1 transmission on PUSCH not using repetition type B with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for CSI part 1 transmission, denoted as Q′CSI-1, is determined as follows: where: - OCSI-1 is the number of bits for CSI part 1; - if OCSI-1≥360, LCSI-1=11; otherwiseLCSI-1 is the number of CRC bits for CSI part 1 determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - if the DCI format scheduling the PUSCH transmission includes a CBGTI field indicating that the UE shall not transmit the r-th code block, Kr=0; otherwise, Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - Q′ACK / CG-UCI=Q′ACK if HARQ-ACK is present for transmission on the same PUSCH with UL-SCH and without CG-UCI, where Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK transmitted on the PUSCH as defined in clause 6.3.2.4.1.1 of 3GPP specification TS 38.212 if number of HARQ-ACK information bits is more than 2, and if the number of HARQ-ACK information bits is no more than 2 bits, where is the number of reserved resource elements for potential HARQ-ACK transmission in OFDM symbol l, for in the PUSCH transmission, defined in Clause 6.2.7 of 3GPP specification TS 38.212; or - Q′ACK / CG-UCI=Q′ACK if both HARQ-ACK and CG-UCI are present on the same PUSCH with UL-SCH, where Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK and CG-UCI transmitted on the PUSCH; or - Q′ACK / CG-UCI=Q′CG-UCI if CG-UCI is present on the same PUSCH with UL- SCH and without HARQ-ACK, where Q′CG-UCI is the number of coded modulation symbols per layer for CG-UCI transmitted on the PUSCH; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured by higher layer parameter scaling.
[0290] For CSI part 1 transmission on PUSCH not using repetition type B with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for CSI part 1 transmission, denoted as Q′CSI-1, is determined as follows: where: - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the CSI part 1 transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the CSI part 1 transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0291] For CSI part 1 transmission on an actual repetition of a PUSCH with repetition Type B with UL-SCH, the number of coded modulation symbols per layer for CSI part 1 transmission, denoted as Q′CSI-1, is determined as follows: where: - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission assuming a nominal repetition without segmentation, and is the total number of OFDM symbols in a nominal repetition of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH assuming a nominal repetition without segmentation, - for any OFDM symbol that does not carry DMRS of the PUSCH assuming a nominal repetition without segmentation, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission assuming a nominal repetition without segmentation; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the actual repetition of the PUSCH transmission, and is the total number of OFDM symbols in the actual repetition of the PUSCH transmission, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the actual repetition of the PUSCH transmission, - for any OFDM symbol that does not carry DMRS of the actual repetition of the PUSCH transmission, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the actual repetition of the PUSCH transmission; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0292] For CSI part 1 transmission on PUSCH without UL-SCH, the number of coded modulation symbols per layer for CSI part 1 transmission, denoted as Q′CSI-1, is determined as follows: if there is CSI part 2 to be transmitted on the PUSCH, else end if where: - OCSI-1 is the number of bits for CSI part 1; - if OCSI-1≥360, LCSI-1=11; otherwise LCSI-1 is the number of CRC bits for CSI part 1 determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK transmitted on the PUSCH if number of HARQ-ACK information bits is more than 2, and if the number of HARQ-ACK information bits is no more than 2 bits, where is the number of reserved resource elements for potential HARQ-ACK transmission in OFDM symbol l, for in the PUSCH transmission, defined in Clause 6.2.7 of 3GPP specification TS 38.212; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - R is the code rate of the PUSCH; - Qm is the modulation order of the PUSCH.
[0293] For CSI part 1, the input bit sequence to rate matching is where r is the code block number, and Nr is the number of coded bits in code block number r. Rate matching is performed according to Clause 5.4.1 of 3GPP specification TS 38.212 by setting IBIL=1 and the rate matching output sequence length to where CUCI is the number of code blocks for determined according to Clause 5.2.1 of 3GPP specification TS 38.212; NL is the number of transmission layers of the PUSCH; Qm is the modulation order of the PUSCH; EUCI=NL·Q′CSI,1·Qm. The output bit sequence after rate matching is denoted as where Er is the length of rate matching output sequence in code block number r.
[0294] For UCI encoded by Polar code, for CSI part 2 transmission on PUSCH not using repetition type B with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for CSI part 2 transmission, denoted as Q′CSI-2, is determined as follows: where: - OCSI-2 is the number of bits for CSI part 2; - if OCSI-2≥360, LCSI-2=11; otherwise LCSI-2 is the number of CRC bits for CSI part 2 determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - if the DCI format scheduling the PUSCH transmission includes a CBGTI field indicating that the UE shall not transmit the r-th code block, Kr=0; otherwise, Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - Q′ACK / CG-UCI=Q′ACK if HARQ-ACK is present for transmission on the same PUSCH with UL-SCH and without CG-UCI, where Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK transmitted on the PUSCH as defined in clause 6.3.2.4.1.1 of 3GPP specification TS 38.212 if number of HARQ-ACK information bits is more than 2, and Q′ACK=0 if the number of HARQ-ACK information bits is 1 or 2 bits; or - Q′ACK / CG-UCI=Q′ACK if both HARQ-ACK and CG-UCI are present on the same PUSCH with UL-SCH, where Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK and CG-UCI transmitted on the PUSCH; or - Q′ACK / CG-UCI=Q′CG-UCI if CG-UCI is present on the same PUSCH with UL- SCH and without HARQ-ACK, where Q′CG-UCI is the number of coded modulation symbols per layer for CG-UCI transmitted on the PUSCH; - Q′ACK / CG-UCI=Q′CG-UCI if CG-UCI is present on the same PUSCH with UL- SCH and without HARQ-ACK, where Q′CG-UCI is the number of coded modulation symbols per layer for CG-UCI transmitted on the PUSCH; - Q′CSI-1 is the number of coded modulation symbols per layer for CSI part 1 transmitted on the PUSCH; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol I, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured by higher layer parameter scaling.
[0295] For CSI part 2 transmission on PUSCH not using repetition type B with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for CSI part 2 transmission, denoted as Q′CSI-2, is determined as follows: where: - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the CSI part 2 transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the CSI part 2 transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0296] For CSI part 2 transmission on an actual repetition of a PUSCH with repetition Type B with UL-SCH, the number of coded modulation symbols per layer for CSI part 2 transmission, denoted as Q′CSI-2, is determined as follows: where: - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission assuming a nominal repetition without segmentation, and is the total number of OFDM symbols in a nominal repetition of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH assuming a nominal repetition without segmentation, - for any OFDM symbol that does not carry DMRS of the PUSCH assuming a nominal repetition without segmentation, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission assuming a nominal repetition without segmentation; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the actual repetition of the PUSCH transmission, and is the total number of OFDM symbols in the actual repetition of the PUSCH transmission, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the actual repetition of the PUSCH transmission, - for any OFDM symbol that does not carry DMRS of the actual repetition of the PUSCH transmission, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the actual repetition of the PUSCH transmission; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0297] For CSI part 2 transmission on PUSCH without UL-SCH, the number of coded modulation symbols per layer for CSI part 2 transmission, denoted as Q′CSI-2, is determined as follows: where: - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - Q′ACK is the number of coded modulation symbols per layer for HARQ-ACK transmitted on the PUSCH if number of HARQ-ACK information bits is more than 2, and Q′ACK=0 if the number of HARQ-ACK information bits is 1 or 2 bits; - Q′CSI-1 is the number of coded modulation symbols per layer for CSI part 1 transmitted on the PUSCH; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH,
[0298] For CSI part 2, the input bit sequence to rate matching is where r is the code block number, and Nr is the number of coded bits in code block number r. Rate matching is performed according to Clause 5.4.1 of 3GPP specification TS 38.212 by setting IBIL=1 and the rate matching output sequence length to where CUCI is the number of code blocks determined according to Clause 5.2.1 of 3GPP specification TS 38.212; NL is the number of transmission layers of the PUSCH; Qm is the modulation order of the PUSCH; EUCI=NL·Q′CSI, 2·Qm. The output bit sequence after rate matching is denoted as where Er is the length of rate matching output sequence in code block number r.
[0299] For UCI encoded by Polar code, for CG-UCI transmission on PUSCH with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for CG-UCI transmission, denoted as Q′CG-UCI, is determined as follows: where: - OCG-UCI is the number of CG-UCI bits; - LCG-UCI is the number of CRC bits for CG-UCI determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured by higher layer parameter scaling; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission.
[0300] For CG-UCI transmission on PUSCH with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for CG-UCI transmission, denoted as Q′CG-UCI, is determined as follows: where: - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the CG-UCI transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the CG-UCI transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission of TB processing over multiple slots in the slot with the CG-UCI transmission; - and all the other notations in the formula are defined the same as for PUSCH with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0301] For CG-UCI, the input bit sequence to rate matching is where r is the code block number, and Nr is the number of coded bits in code block number r. Rate matching is performed according to Clause 5.4.1 of 3GPP specification TS 38.212 by setting IBIL=1 and the rate matching output sequence length to where CUCI is the number of code blocks determined according to Clause 5.2.1 of 3GPP specification TS 38.212; NL is the number of transmission layers of the PUSCH; Qm is the modulation order of the PUSCH; EUCI=NL·Q′CG-UCI·Qm. The output bit sequence after rate matching is denoted as where Er is the length of rate matching output sequence in code block number r.
[0302] For UCI encoded by Polar code, for HARQ-ACK and CG-UCI transmission on PUSCH with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for HARQ-ACK and CG-UCI transmission, denoted as Q′ACK, is determined as follows: where: - OACK is the number of HARQ-ACK bits; - OCG-UCI is the number of CG-UCI bits; - if OACK+OCG-UCI>360, LACK=11; otherwise LACK is the number of CRC bits for HARQ-ACK and CG-UCI determined according to Clause 6.3.1.2.1 of 3GPP specification TS 38.212; - - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured by higher layer parameter scaling; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission.
[0303] For HARQ-ACK and CG-UCI transmission on PUSCH with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for HARQ-ACK and CG-UCI transmission, denoted as Q′ACK, is determined as follows: where: - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK and CG-UCI transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK and CG-UCI transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - Q′jscc-csi is the number of coded modulation symbols per layer for AI / ML- based CSI transmitted on the PUSCH; - l0 is the symbol index of the first OFDM symbol that does not carry DMRS of the PUSCH, after the first DMRS symbol (s) , in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK and CG-UCI transmission; - and all the other notations in the formula are defined the same as for PUSCH with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0304] In some implementations, the UCI 208 may include the at least one AI / ML-based CSI. The UE 104 may determine respective numbers of coded modulation symbols for the one or more legacy UCIs. The number of coded modulation symbols for the at least one AI / ML-based CSI may be determined based on the respective numbers of coded modulation symbols for the one or more legacy UCIs; a first parameter for the at least one AI / ML-based CSI; a higher layer parameter scaling associated with AI / ML-based CSI transmission; and a beta offset associated with AI / ML-based CSI transmission. In other words, the number of coded modulation symbols for AI / ML-based CSI may be determined according to the number of coded modulation symbols for legacy UCI.
[0305] In a specific example, for UCI encoded by Polar code, for AI / ML-based CSI transmission on PUSCH not using repetition type B with UL-SCH and if numberOfSlotsTBoMS is not present in the resource allocation table, or if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is equal to 1, the number of coded modulation symbols per layer for AI / ML-based CSI transmission, denoted as Q′jscc-csi, is determined as follows: where: - N is the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) , or the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) multiplexed by a scaling factor; - - Q′legacy UCI is the number of coded modulation symbols per layer for legacy UCI transmitted on the PUSCH; - CUL-SCH is the number of code blocks for UL-SCH of the PUSCH transmission; - if the DCI format scheduling the PUSCH transmission includes a CBGTI field indicating that the UE shall not transmit the r-th code block, Kr=0; otherwise, Kr is the r-th code block size for UL-SCH of the PUSCH transmission; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - α is configured for AI / ML-based CSI by higher layer parameter scaling.
[0306] For AI / ML-based CSI transmission on PUSCH not using repetition type B with UL-SCH, and if numberOfSlotsTBoMS is present in the resource allocation table and the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI is larger than 1, the number of coded modulation symbols per layer for AI / ML-based CSI transmission, denoted as Q′jscc-csi, is determined as follows: where: - N is the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) , or the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) multiplexed by a scaling factor; - - Q′legacy UCI is the number of coded modulation symbols per layer for legacy UCI transmitted on the PUSCH; - Ns is the value of numberOfSlotsTBoMS in the row indicated by the Time domain resource assignment field in DCI; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission of TB processing over multiple slots in the slot with the HARQ-ACK transmission and is the total number of OFDM symbols of the PUSCH in the slot, including all OFDM symbols used for DMRS; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0307] For AI / ML-based CSI transmission on an actual repetition of a PUSCH with repetition Type B with UL-SCH, the number of coded modulation symbols per layer for AI / ML-based CSI transmission, denoted as Q′jscc-csi, is determined as follows: where: - N is the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) , or the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) multiplexed by a scaling factor; - - Q′legacy UCIis the number of coded modulation symbols per layer for legacy UCI transmitted on the PUSCH; - α is configured for AI / ML-based CSI by higher layer parameter scaling; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission assuming a nominal repetition without segmentation, and is the total number of OFDM symbols in a nominal repetition of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH assuming a nominal repetition without segmentation, - for any OFDM symbol that does not carry DMRS of the PUSCH assuming a nominal repetition without segmentation, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission assuming a nominal repetition without segmentation; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the actual repetition of the PUSCH transmission, and is the total number of OFDM symbols in the actual repetition of the PUSCH transmission, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the actual repetition of the PUSCH transmission, - for any OFDM symbol that does not carry DMRS of the actual repetition of the PUSCH transmission, where is the number of subcarriers in OFDM symbol l that carries PTRS, in the actual repetition of the PUSCH transmission; - and all the other notations in the formula are defined the same as for PUSCH not using repetition type B and if numberOfSlotsTBoMS is not present in the resource allocation table.
[0308] For AI / ML-based CSI transmission on PUSCH without UL-SCH, the number of coded modulation symbols per layer for AI / ML-based CSI transmission, denoted as Q′jscc-csi, is determined as follows: where: - N is the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) , or the coded / indicated / predefined bit length of AI / ML-based CSI (s) or initial information bits associated with the AI / ML-based CSI (s) multiplexed by a scaling factor; - - Q′legacy UCI is the number of coded modulation symbols per layer for legacy UCI transmitted on the PUSCH; - is the scheduled bandwidth of the PUSCH transmission, expressed as a number of subcarriers; - is the number of subcarriers in OFDM symbol l that carries PTRS, in the PUSCH transmission; - is the number of resource elements that may be used for transmission of UCI in OFDM symbol l, for in the PUSCH transmission and is the total number of OFDM symbols of the PUSCH, including all OFDM symbols used for DMRS; - for any OFDM symbol that carries DMRS of the PUSCH, - for any OFDM symbol that does not carry DMRS of the PUSCH, - R is the code rate of the PUSCH; - Qm is the modulation order of the PUSCH; - α is configured for AI / ML-based CSI by higher layer parameter scaling.
[0309] In some implementations, and α may be separately configured for AI / ML-based CSI.
[0310] In some embodiments, the UE 104 may determine a rate matching output sequence length for the at least one AI / ML-based CSI, and perform a rate matching on at least one encoded output of the first AI / ML-based model based on the rate matching output sequence length. In other words, the UE 104 may determine the rate matching output sequence length EUCI based on the size of the PUCCH or PUSCH resource, and the output bits of the AI / ML model are rate matched according to the rate matching output sequence length EUCI. In some implementations, a first encoded output among the at least one encoded output may be rate matched to a part rate matching output sequence length, and the part rate matching output sequence length is equal to the rate matching output sequence length divided by the number of AI / ML-based CSIs among the at least one AI / ML-based CSI. For example, assuming there are C parts of AI / ML-based CSI to be transmitted in a resource, then for each part, the Mr output bits of the AI / ML encoder model for part r are rate matched according to Er=EUCI / C, wherein Er is the rate matching output sequence length for part r.
[0311] In some implementations, if the part rate matching output sequence length is larger than the number of coded bits associated with the first encoded output, at least one most important bit of the first encoded output is repeated. Alternatively, if the part rate matching output sequence length is smaller than a number of coded bits associated with the first encoded output, at least one least important bit of the first encoded output is punctured. FIGS. 6A and 6B illustrate example schemes of rate matching of JSCC-encoded CSI bits in accordance with aspects of the present disclosure. In the example of FIG. 6A, Er-Mr important bits of AI / ML-based CSI part r are repeated. In the example of FIG. 6A, Mr-Er unimportant bits of AI / ML-based CSI part r are punctured.
[0312] In some examples, location information of the at least one most important bit or the at least one least important bit is predefined. In other words, the important bit's location for AI / ML-based CSI is predefined. Alternatively, the UE 104 may transmit, to the base station 102, location information of the at least one most important bit or the at least one least important bit. In other words, the UE may report the location of important or unimportant bits of AI / ML-based CSI. Alternatively, the UE 104 may receive, from the base station 102, location information of the at least one most important bit or the at least one least important bit. In other words, the important bit's location for AI / ML-based CSI is configured. The location of important bits or unimportant bits may thus be known by the base station for decoding. A specific implementation of the rate matching for a AI / ML-based CSI part r may follow:
[0313] In some examples, the at least one most important bit of the first encoded output may include first at least one bit of the first encoded output, and the at least one least important bit of the first encoded output may include last at least one bit of the first encoded output. In other words, the important bits for a AI / ML-based CSI part are assumed to be the first few bits after AL / ML encoding, and the unimportant bits for a AI / ML-based CSI part are assumed to be the last few bits after AL / ML encoding. A specific implementation of the rate matching for a AI / ML-based CSI part r may follow:
[0314] In some examples, the at least one most important bit of the first encoded output may include last at least one bit of the first encoded output, and the at least one least important bit of the first encoded output may include first at least one bit of the first encoded output. In other words, the important bits for a AI / ML-based CSI part are assumed to be the last few bits after AL / ML encoding, and the unimportant bits for a AI / ML-based CSI part are assumed to be the first few bits after AL / ML encoding. A specific implementation of the rate matching for a AI / ML-based CSI part r may follow:
[0315] In some embodiments, the UE 104 may determine a rate matching output sequence length for the at least one AI / ML-based CSI, and determines a number of coded bits associated with at least one encoded output of the first AI / ML-based model based on the rate matching output sequence length. For example, the number of coded bits associated with each encoded output may be equal to the rate matching output sequence length divided by the number of AI / ML-based CSIs among the at least one AI / ML-based CSI. In other words, the UE 104 may determine the number of output bits of the AI / ML encoder model according the rate matching output sequence length. The output bits number of the AI / ML encoder model for each part of the C parts is determined by EUCI / C. FIG. 7 illustrates an example procedure of adjustment on JSCC encoding in accordance with aspects of the present disclosure. As shown in FIG. 7, the output bits of the JSCC-CSI encoding model may be adjusted according to the rate matching sequence output length EUCI. The output bit number Mr of the JSCC-CSI encoding model for CSI part r among C CSI parts may be adjusted to be Er=EUCI / C.
[0316] In some embodiments, the UCI 208 may include the at least one AI / ML-based CSI and legacy CSI comprising CSI part 1 and CSI part 2. The UE 104 may map at least one coded bit for the at least one AI / ML-based CSI to the transmission resource before at least one coded bit for the CSI part 2. The mapping of the at least one coded bit for the at least one AI / ML-based CSI is before or after at least one coded bit for the CSI part 1. In other words, the UE may transmit the AI / ML-based CSI on the PUCCH or PUSCH resource. For AI / ML-based CSI mapping on PUSCH resource, it may be mapped to PUSCH resource before / after legacy CSI part 1, but before CSI-part 2.
[0317] FIG. 8 illustrates an example of a device 800 that supports CSI transmission in accordance with aspects of the present disclosure. The device 800 may be an example of a UE 104 or a base station 102 as described herein. The device 800 may support wireless communication with one or more network entities 102, UEs 104, or any combination thereof. The device 800 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 802, a memory 804, a transceiver 806, and, optionally, an I / O controller 808. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
[0318] The processor 802, the memory 804, the transceiver 806, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. For example, the processor 802, the memory 804, the transceiver 806, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
[0319] In some implementations, the processor 802, the memory 804, the transceiver 806, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure. In some implementations, the processor 802 and the memory 804 coupled with the processor 802 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 802, instructions stored in the memory 804) .
[0320] For example, the processor 802 may support wireless communication at the device 800 in accordance with examples as disclosed herein. The processor 802 may be configured to operable to support a means for determining a transmission resource for uplink control information (UCI) , wherein the UCI is associated with at least one first channel status information (CSI) generated by a first artificial intelligence / machine learning (AI / ML) -based model; and a means for transmitting, to a network entity, the UCI on the transmission resource.
[0321] In another example, the processor 802 may support wireless communication at the device 800 in accordance with examples as disclosed herein. The processor 802 may be configured to operable to support a means for determining a transmission resource for uplink control information (UCI) , wherein the UCI comprises associated with at least one first channel status information (CSI) generated by a first artificial intelligence / machine learning (AI / ML) -based model; a means for receiving, from a user equipment (UE) , the UCI on the transmission resource; and a means for decoding the at least one first CSI using a second AI / ML-based model.
[0322] The processor 802 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) . In some implementations, the processor 802 may be configured to operate a memory array using a memory controller. In some other implementations, a memory controller may be integrated into the processor 802. The processor 802 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 804) to cause the device 800 to perform various functions of the present disclosure.
[0323] The memory 804 may include random access memory (RAM) and read-only memory (ROM) . The memory 804 may store computer-readable, computer-executable code including instructions that, when executed by the processor 802 cause the device 800 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some implementations, the code may not be directly executable by the processor 802 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some implementations, the memory 804 may include, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0324] The I / O controller 808 may manage input and output signals for the device 800. The I / O controller 808 may also manage peripherals not integrated into the device M02. In some implementations, the I / O controller 808 may represent a physical connection or port to an external peripheral. In some implementations, the I / O controller 808 may utilize an operating system such as or another known operating system. In some implementations, the I / O controller 808 may be implemented as part of a processor, such as the processor 806. In some implementations, a user may interact with the device 800 via the I / O controller 808 or via hardware components controlled by the I / O controller 808.
[0325] In some implementations, the device 800 may include a single antenna 810. However, in some other implementations, the device 800 may have more than one antenna 810 (i.e., multiple antennas) , including multiple antenna panels or antenna arrays, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 806 may communicate bi-directionally, via the one or more antennas 810, wired, or wireless links as described herein. For example, the transceiver 806 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 806 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 810 for transmission, and to demodulate packets received from the one or more antennas 810. The transceiver 806 may include one or more transmit chains, one or more receive chains, or a combination thereof.
[0326] A transmit chain may be configured to generate and transmit signals (e.g., control information, data, packets) . The transmit chain may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) . The transmit chain may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium. The transmit chain may also include one or more antennas 810 for transmitting the amplified signal into the air or wireless medium.
[0327] A receive chain may be configured to receive signals (e.g., control information, data, packets) over a wireless medium. For example, the receive chain may include one or more antennas 810 for receive the signal over the air or wireless medium. The receive chain may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal. The receive chain may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receive chain may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
[0328] FIG. 9 illustrates an example of a processor 900 that supports CSI transmission in accordance with aspects of the present disclosure. The processor 900 may be an example of a processor configured to perform various operations in accordance with examples as described herein. The processor 900 may include a controller 902 configured to perform various operations in accordance with examples as described herein. The processor 900 may optionally include at least one memory 904, such as L1 / L2 / L3 cache. Additionally, or alternatively, the processor 900 may optionally include one or more arithmetic-logic units (ALUs) 906. One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
[0329] The processor 900 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein. The processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 900) or other memory (e.g., random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .
[0330] The controller 902 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 900 to cause the processor 900 to support various operations of a base station in accordance with examples as described herein. For example, the controller 902 may operate as a control unit of the processor 900, generating control signals that manage the operation of various components of the processor 900. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
[0331] The controller 902 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 904 and determine subsequent instruction (s) to be executed to cause the processor 900 to support various operations in accordance with examples as described herein. The controller 902 may be configured to track memory address of instructions associated with the memory 904. The controller 902 may be configured to decode instructions to determine the operation to be performed and the operands involved. For example, the controller 902 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 900 to cause the processor 900 to support various operations in accordance with examples as described herein. Additionally, or alternatively, the controller 902 may be configured to manage flow of data within the processor 900. The controller 902 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 900.
[0332] The memory 904 may include one or more caches (e.g., memory local to or included in the processor 900 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementation, the memory 904 may reside within or on a processor chipset (e.g., local to the processor 900) . In some other implementations, the memory 904 may reside external to the processor chipset (e.g., remote to the processor 900) .
[0333] The memory 904 may store computer-readable, computer-executable code including instructions that, when executed by the processor 900, cause the processor 900 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. The controller 902 and / or the processor 900 may be configured to execute computer-readable instructions stored in the memory 904 to cause the processor 900 to perform various functions. For example, the processor 900 and / or the controller 902 may be coupled with or to the memory 904, and the processor 900, the controller 902, and the memory 904 may be configured to perform various functions described herein. In some examples, the processor 900 may include multiple processors and the memory 904 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.
[0334] The one or more ALUs 906 may be configured to support various operations in accordance with examples as described herein. In some implementation, the one or more ALUs 906 may reside within or on a processor chipset (e.g., the processor 900) . In some other implementations, the one or more ALUs 906 may reside external to the processor chipset (e.g., the processor 900) . One or more ALUs 906 may perform one or more computations such as addition, subtraction, multiplication, and division on data. For example, one or more ALUs 906 may receive input operands and an operation code, which determines an operation to be executed. One or more ALUs 906 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 906 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 906 to handle conditional operations, comparisons, and bitwise operations.
[0335] For example, the processor 900 may support wireless communication in accordance with examples as disclosed herein. The processor 900 may be configured to or operable to support a means for determining a transmission resource for uplink control information (UCI) , wherein the UCI is associated with at least one first channel status information (CSI) generated by a first artificial intelligence / machine learning (AI / ML) -based model; and a means for transmitting, to a network entity, the UCI on the transmission resource.
[0336] In another example, the processor 900 may support wireless communication in accordance with examples as disclosed herein. The processor 900 may be configured to or operable to support a means for determining a transmission resource for uplink control information (UCI) , wherein the UCI comprises associated with at least one first channel status information (CSI) generated by a first artificial intelligence / machine learning (AI / ML) -based model; a means for receiving, from a user equipment (UE) , the UCI on the transmission resource; and a means for decoding the at least one first CSI using a second AI / ML-based model.
[0337] FIG. 10 illustrates a flowchart of a method 1000 that supports CSI transmission in accordance with aspects of the present disclosure. The operations of the method 1000 may be implemented by a device or its components as described herein. For example, the operations of the method 1000 may be performed by the UE 104 as described herein. In some implementations, the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
[0338] At 1005, the method may include determining a transmission resource for uplink control information (UCI) , wherein the UCI is associated with at least one first channel status information (CSI) generated by a first artificial intelligence / machine learning (AI / ML) -based model. The operations of 1005 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1005 may be performed by a device as described with reference to FIG. 1A.
[0339] At 1010, the method may include transmitting, to a network entity, the UCI on the transmission resource. The operations of 1010 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1010 may be performed by a device as described with reference to FIG. 1A.
[0340] FIG. 11 illustrates a flowchart of a method 1100 that supports CSI transmission in accordance with aspects of the present disclosure. The operations of the method 1100 may be implemented by a device or its components as described herein. For example, the operations of the method 1100 may be performed by the base station 104 as described herein. In some implementations, the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
[0341] At 1105, the method may include determining a transmission resource for uplink control information (UCI) , wherein the UCI comprises associated with at least one first channel status information (CSI) generated by a first artificial intelligence / machine learning (AI / ML) -based model. The operations of 1105 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1105 may be performed by a device as described with reference to FIG. 1A.
[0342] At 1110, the method may include receiving, from a user equipment (UE) , the UCI on the transmission resource. The operations of 1110 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1110 may be performed by a device as described with reference to FIG. 1A.
[0343] At 1115, the method may include decoding the at least one first CSI using a second AI / ML-based model. The operations of 1115 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1115 may be performed by a device as described with reference to FIG. 1A.
[0344] It should be noted that the methods described herein describes possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0345] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed with a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
[0346] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0347] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
[0348] As used herein, including in the claims, an article “a” before an element is unrestricted and understood to refer to “at least one” of those elements or “one or more” of those elements. The terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable. As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” or “one or both of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on”shall be construed in the same manner as the phrase “based at least in part on. Further, as used herein, including in the claims, a “set” may include one or more elements.
[0349] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A user equipment (UE) , comprising:a processor; anda transceiver coupled to the processor,wherein the processor is configured to:determine a transmission resource for uplink control information (UCI) , wherein the UCI is associated with at least one first channel status information (CSI) generated by a first artificial intelligence / machine learning (AI / ML) -based model; andtransmit, to a network entity via the transceiver, the UCI on the transmission resource.2.The UE of claim 1, wherein the first AI / ML-based model comprises at least one of the following:a CSI generation model for CSI compression; ora CSI generation model for joint source and channel coding (JSCC) .3.The UE of claim 1, wherein the transmission resource comprises one of the following:a physical uplink control channel (PUCCH) transmission resource; ora physical uplink shared channel (PUSCH) transmission resource.4.The UE of claim 1, wherein the processor is further configured to:determine first at least one transmission resource for the at least one first CSI;determine second at least one transmission resource for at least one second UCI, wherein the first at least one transmission resource is overlapped with the second at least one transmission resource; anddetermine the UCI based on the at least one first CSI and the at least one second UCI,wherein the at least one second UCI comprises at least one of the following:hybrid automatic repeat request-acknowledgement (HARQ-ACK) information;scheduling request (SR) information; orat least one second CSI.5.The UE of claim 4, wherein the UCI comprises:the at least one first CSI, andone or more second UCIs among the at least one second UCI excluding the at least one second CSI.6.The UE of claim 4, wherein the at least one second CSI and the at least one first CSI are associated with different CSI quantities, and the UCI comprises:the at least one first CSI, andthe at least one second UCI.7.The UE of claim 4, wherein one or more second CSIs among the at least one second CSI and one or more first CSIs among the at least one first CSI are associated with the same CSI quantities, and the UCI comprises one of the following:the at least one first CSI and the at least one second UCI excluding the one or more second CSIs; orthe at least one second UCI and the at least one first CSI excluding the one or more first CSIs.8.The UE of claim 4, wherein the UCI comprises one of the following:the at least one first CSI; orthe at least one second UCI.9.The UE of claim 4, wherein the processor is further configured to:generate at least one further second CSI based on channel information associated with the at least one first CSI, wherein the UCI comprises the at least one second UCI and the generated at least one further second CSI.10.The UE of claim 1, wherein the transmission resource for the UCI is a PUCCH resource determined at least based on a first parameter for the at least one first CSI.11.The UE of claim 10, wherein the UCI comprises the at least one first CSI, and the processor is further configured to one of the following:determine a resource set based on the first parameter for the at least one first CSI, wherein the transmission resource is comprised in the resource set; ordetermine the transmission resource based on the first parameter for the at least one first CSI.12.The UE of claim 10, wherein the UCI comprises the at least one first CSI and one or more second UCIs, and the processor is further configured to one of the following:determine a resource set based on the first parameter for the at least one first CSI and an information bit length of the one or more second UCIs, wherein the transmission resource is comprised in the resource set; ordetermine the transmission resource based on the first parameter for the at least one first CSI and an information bit length of the one or more second UCIs; ordetermine a resource set group based on the first parameter for the at least one first CSI, and determine a resource set among the resource set group based on an information bit length of the one or more second UCIs, wherein the transmission resource is comprised in the resource set; ordetermine a resource set group based on an information bit length of the one or more second UCIs, and determine a resource set among the resource set group based on the first parameter for the at least one first CSI, wherein the transmission resource is comprised in the resource set.13.The UE of claim 10, wherein the processor is further configured to:determine at least one PUCCH resource set for transmissions of first CSIs,wherein the transmission resource is comprised in the at least one PUCCH resource set, and the UCI comprises the at least one first CSI,wherein the at least one PUCCH resource set is associated with one of the following:transmissions of first CSIs only; ortransmissions of first CSIs multiplexed with transmissions second UCIs; ortransmissions of first CSIs.14.The UE of claim 1, wherein the processor is further configured to:determine a rate matching output sequence length for the at least one first CSI; anddetermine a number of coded bits associated with at least one encoded output of the first AI / ML-based model based on the rate matching output sequence length,wherein the number of coded bits associated with each encoded output is equal to the rate matching output sequence length divided by the number of first CSIs among the at least one first CSI.15.The UE of claim 1, wherein the processor is further configured to:determine a number of coded modulation symbols for the at least one first CSI based on a first parameter for the at least one first CSI.16.The UE of claim 10 or 15, wherein the first parameter comprises one of the following:a number of coded bits associated with at least one encoded output of the first AI / ML-based model;a number of coded bits associated with at least one encoded output of the first AI / ML-based model and a scaling factor;a number of bits associated with at least one output of the first AI / ML-based model;a number of bits associated with at least one output of the first AI / ML-based model and a scaling factor;a predefined bit length value;a bit length value indicated by the network entity;a number of bits associated with at least one input of the first AI / ML-based model; ora number of bits associated with at least one input of the first AI / ML-based model and a scaling factor.17.The UE of claim 16, wherein the number of coded bits associated with the at least one encoded output of the first AI / ML-based model is associated with a matrix dimension of the at least one encoded output and a modulation order of the transmission resource.18.A network entity, comprising:a processor; anda transceiver coupled to the processor,wherein the processor is configured to:determine a transmission resource for uplink control information (UCI) , wherein the UCI comprises associated with at least one first channel status information (CSI) generated by a first artificial intelligence / machine learning (AI / ML) -based model;receive, from a user equipment (UE) via the transceiver, the UCI on the transmission resource; anddecode the at least one first CSI using a second AI / ML-based model.19.A method performed by a user equipment, the method comprising:determining a transmission resource for uplink control information (UCI) , wherein the UCI is associated with at least one first channel status information (CSI) generated by a first artificial intelligence / machine learning (AI / ML) -based model; andtransmitting, to a network entity, the UCI on the transmission resource.20.A method performed by a network entity, the method comprising:determining a transmission resource for uplink control information (UCI) , wherein the UCI comprises associated with at least one first channel status information (CSI) generated by a first artificial intelligence / machine learning (AI / ML) -based model;receiving, from a user equipment (UE) , the UCI on the transmission resource; anddecoding the at least one first CSI using a second AI / ML-based model.
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