CN113141231A

CN113141231A - Transmission method and corresponding device

Info

Publication number: CN113141231A
Application number: CN202010130313.4A
Authority: CN
Inventors: 张飒; 王轶; 付景兴; 孙霏菲
Original assignee: Beijing Samsung Telecommunications Technology Research Co Ltd; Samsung Electronics Co Ltd
Current assignee: Beijing Samsung Telecom R&D Center; Beijing Samsung Telecommunications Technology Research Co Ltd; Samsung Electronics Co Ltd
Priority date: 2020-01-17
Filing date: 2020-02-28
Publication date: 2021-07-20

Abstract

The present disclosure provides a method performed by a first transceiving node in a wireless communication system and a corresponding first transceiving node, wherein the method comprises: receiving first information from a second transceiving node; determining second information of a first priority and a first time unit for transmitting the second information of the first priority based on the first information; determining second information of a second priority and a second time unit for transmitting the second information of the second priority based on the first information; and the second information of the first priority comprises hybrid automatic repeat request-acknowledgement (HARQ-ACK) information of the first priority, and when the first time unit and the second time unit conflict, the second information to be sent is determined according to the HARQ-ACK information of the first priority.

Description

Transmission method and corresponding device

Technical Field

The present invention relates to the field of mobile communications technologies, and in particular, to a transmission method and a corresponding device.

Background

With the rapid development of the information industry, especially the growing demand from the mobile internet and internet of things (IoT), the future mobile communication technology is challenged with unprecedented challenges. As reported by the International Telecommunications Union (ITU) under ITU-R M [ imt. beam 2020. transfic ], it is expected that by 2020, mobile TRAFFIC will increase nearly 1000 times and the number of user equipment connections will also exceed 170 billion compared to 2010 (4G era), and as the vast number of IoT devices gradually permeates into mobile communication networks, the number of connected devices will be more dramatic. To address this unprecedented challenge, the communications industry and academia have developed extensive fifth generation mobile communications technology (5G) research, facing the 2020. Future 5G frameworks and overall goals are currently discussed in ITU's report ITU-R M [ imt.vision ], wherein the 5G demand landscape, application scenarios and various important performance indicators are specified. For the new requirements in 5G, ITU's report ITU-R M [ imt. user TECHNOLOGY TRENDS ] provides information related to the technical trend for 5G, aiming at solving significant problems of significant improvement of system throughput, consistency of user experience, scalability to support IoT, latency, energy efficiency, cost, network flexibility, support of emerging services, and flexible spectrum utilization. In 3GPP, work on the first phase of 5G is already in progress. To support more flexible scheduling, the 3GPP decides to support variable Hybrid Automatic Repeat request-Acknowledgement (HARQ-ACK) feedback delay in 5G. In an existing Long Term Evolution (LTE) system, an uplink transmission Time of receiving HARQ-ACK from downlink data is fixed, for example, in a Frequency Division Duplex (FDD) system, a Time delay is 4 subframes, and in a Time Division Duplex (TDD) system, an HARQ-ACK feedback Time delay is determined for a corresponding downlink subframe according to uplink and downlink configuration. In a 5G system, whether FDD or TDD, the uplink time unit for which HARQ-ACK can be fed back is variable for a certain downlink time unit (e.g., downlink timeslot, or downlink mini-timeslot). For example, the HARQ-ACK feedback delay may be dynamically indicated through physical layer signaling, or different HARQ-ACK delays may be determined according to different services or user capabilities and other factors.

The 3GPP defines three major directions of a 5G application scenario, namely eMBB (mobile broadband enhancement), mtc (large-scale internet of things, more called mass machine type communication), URLLC (ultra-high reliable ultra-low latency communication). The eMBB scene is mainly used for pursuing the extremely consistent communication experience among people for further improving the performance of user experience and the like on the basis of the existing mobile broadband service scene. mMTC and URLLC are application scenarios of the Internet of things, but the respective emphasis points are different: mMTC is mainly information interaction between people and objects, and URLLC mainly embodies the communication requirements between the objects. The eMBBs and URLLC of the 5G adopt a joint networking mode to support both URLLC services and eMBBs in the same cell. Because URLLC traffic may be sparse traffic, compared with URLLC single-network, eMBB and URLLC joint-network may improve system spectrum efficiency. When the system has the URLLC service, the URLLC service is preferentially scheduled, and when the system has no URLLC service or the resource occupied by the URLLC service is less, the eMBB service can be scheduled. At present, when a URLLC service and an eMBB service conflict, data and/or control information of the URLLC service may be preferentially transmitted, at this time, the performance of the eMBB service may be lost, and how to optimize transmission of the data and control information of the eMBB service is urgent to solve.

Disclosure of Invention

The present invention is provided to solve at least the above problems and to provide at least the following advantages.

According to an aspect of the invention, there is provided a method performed by a first transceiving node in a wireless communication system, comprising: receiving first information from a second transceiving node; determining second information of a first priority and a first time unit for transmitting the second information of the first priority based on the first information; determining second information of a second priority and a second time unit for transmitting the second information of the second priority based on the first information; and the second information of the first priority comprises hybrid automatic repeat request-acknowledgement (HARQ-ACK) information of the first priority, and when the first time unit and the second time unit conflict, the second information to be sent is determined according to the HARQ-ACK information of the first priority.

According to an embodiment of the present disclosure, the first information comprises data and/or control information, the data comprising at least one of a transport block, a group of code blocks or a code block; and/or the second information comprises at least one of data, HARQ-ACK information, channel state information, CSI, or scheduling request, SR, information.

According to an embodiment of the present disclosure, the first priority is higher than the second priority, or the first priority is equal to the second priority.

According to an embodiment of the present disclosure, determining the transmitted second information according to the HARQ-ACK information of the first priority includes: and determining the sent second information according to whether the number of the data and/or the control information which are decoded in error and contained in the HARQ-ACK information of the first priority is larger than or equal to a first threshold or not, or according to whether the number of the Negative Acknowledgement (NACK) bits in the HARQ-ACK codebook contained in the HARQ-ACK information of the first priority is larger than or equal to a second threshold or not.

According to an embodiment of the present disclosure, the first threshold is a non-negative integer and the second threshold is a non-negative integer.

According to the embodiment of the present disclosure, when the number of erroneously decoded data and/or control information contained in the HARQ-ACK information of the first priority is greater than or equal to a first threshold, or the number of NACK bits in the HARQ-ACK codebook contained in the HARQ-ACK information of the first priority is greater than or equal to a second threshold, determining that the transmitted second information includes one of the following manners: determining to transmit the second information of the first priority, and determining to simultaneously transmit the second information of the first priority and the second information of the second priority.

According to the embodiment of the present disclosure, when the number of erroneously decoded data and/or control information contained in the HARQ-ACK information of the first priority is greater than or equal to a first threshold, or the number of NACK bits in the HARQ-ACK codebook contained in the HARQ-ACK information of the first priority is greater than or equal to a second threshold, determining that the transmitted second information includes one of the following manners: determining to transmit second information of a second priority, determining to simultaneously transmit the second information of the first priority and the second information of the second priority, and determining to simultaneously transmit the second information of the second priority and the compressed HARQ-ACK information of the first priority.

According to an embodiment of the disclosure, the compressed first priority HARQ-ACK information comprises one of: the number of bits of the codebook of HARQ-ACK information of the first priority, and the X least significant bits of the number of bits of the codebook of HARQ-ACK information of the first priority are added to the ACK of 1 bit in a bundled manner.

According to the embodiment of the present disclosure, the simultaneous transmission is implemented in a multiplexing manner, a set of offsets beta-offset related to the multiplexing manner is specified through a higher layer signaling configuration or a protocol, and an index of the set of offsets beta-offset is dynamically indicated through downlink control information DCI.

According to an embodiment of the present disclosure, when it is determined to transmit the second information of the second priority, the HARQ-ACK information of the first priority is not transmitted or the transmission of the HARQ-ACK information of the first priority is delayed.

According to an embodiment of the present disclosure, further comprising: and when the first time unit and the second time unit conflict, determining the time unit for sending the second information according to the second information with the first priority, wherein the time unit is the first time unit and/or the second time unit.

According to an embodiment of the present disclosure, at least one of the following is provided by a predefined manner: determining a manner of the transmitted second information, the first threshold or the second threshold, and including, by a predefined manner, at least one of: by protocol specification, by higher layer signaling configuration, or by DCI dynamic indication.

According to another aspect of the present invention, there is provided a first transceiving node comprising: a transceiver configured to receive and transmit signals; and at least one processor coupled with the transceiver and configured to perform a method according to an embodiment of the invention.

According to the invention, when the HARQ-ACK information of the first priority conflicts with the uplink data and/or the control information, the uplink data and/or the control information which is transmitted preferentially is selected according to the HARQ-ACK information of the first priority, so that the effective utilization of the uplink control channel resources is ensured.

Drawings

Various embodiments of the present invention are shown in the drawings. The embodiments herein will be better understood from the following description with reference to the accompanying drawings, in which:

fig. 1 is a flowchart of an uplink transmission method according to an embodiment of the present disclosure;

fig. 2 is a flow chart of a transmission method according to another embodiment of the present disclosure;

fig. 3 is a flow chart of a transmission method according to another embodiment of the present disclosure;

fig. 4 is a flow chart of a transmission method according to another embodiment of the present disclosure;

fig. 5 is a flow chart of a transmission method according to another embodiment of the present disclosure; and

fig. 6 is a block diagram of a transceiving node performing a transmission method according to another embodiment of the present disclosure.

Detailed Description

The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of embodiments of the invention defined by the claims and their equivalents. Various specific details are included to aid understanding, but these are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements or components, these elements or components should not be limited by these terms. These terms are only used to distinguish one element or component from another element or component, and do not define any content, level, order, arrangement, orientation, time, importance, or the like, of the elements or components.

It will be understood that a feature, function, step, operation, portion, component, element, or any combination thereof described in any one embodiment of the present disclosure may be substituted for or combined with a feature, function, step, operation, portion, component, element, or any combination thereof described in another embodiment.

Fig. 1 is a flow chart of a transmission method according to an embodiment of the present disclosure.

In the present invention, the first transceiving node may be a UE (User Equipment), and the second transceiving node may be a BS (Base Station). In the following examples, the first transceiving node is illustrated by, but not limited to, a UE and the second transceiving node is illustrated by, but not limited to, a BS, but this is merely exemplary and the method of the present disclosure may be applied to communications between various identical and/or different transceiving nodes.

The first information may be data and/or control signalling sent by the second transceiving node to the first transceiving node. In the following examples, the first information is illustrated by, but not limited to, downlink data and/or control signaling. The data in the first information is exemplified by (but not limited to) Downlink data carried by a PDSCH (Physical Downlink Shared CHannel). The downlink control signaling is taken as an example (but not limited to) to describe the control signaling in the first information. The Downlink Control signaling may be DCI (Downlink Control information) carried by a PDCCH (Physical Downlink Control CHannel) and/or Control signaling carried by a PDSCH (Physical Downlink Shared CHannel). For downlink data scheduling based on a Transport Block (TB) level, each TB corresponds to 1-bit HARQ-ACK information; for downlink data scheduling based on CBG (Code Block Group) level, each CBG corresponds to 1 bit of HARQ-ACK information; for indicating SPS

Semi-persistent Scheduling (Semi-persistent Scheduling) PDSCH, each DCI corresponding to 1 bit of HARQ-ACK information. When downlink data and/or DCI indicating SPS PDSCH release feeds back HARQ-ACK information in the same uplink time unit, an HARQ-ACK codebook is generated according to the downlink data and/or the DCI indicating SPS PDSCH release feeding back the HARQ-ACK information in the same uplink time unit.

The second information may be data and/or control signalling sent by the first transceiving node to the second transceiving node. In the following examples, the second information is illustrated by way of (but not limited to) uplink data and/or control signaling. The data in the second information is exemplified by (but not limited to) Uplink data carried through a PUSCH (Physical Uplink Shared CHannel). The uplink control signaling is taken as an example (but not limited to) to describe the control signaling in the second information. The Uplink Control signaling may be UCI (Uplink Control information) carried through a PUCCH (Physical Uplink Control CHannel) and/or Control signaling carried through a PUSCH (Physical Uplink Shared CHannel). The uplink control Information may be SR (Scheduling Request) Information, and/or HARQ-ACK Information, and/or CSI (channel State Information). The HARQ-ACK information is a set of HARQ-ACK information of all PDSCH and/or DCI, and the HARQ-ACK information comprises a HARQ-ACK codebook.

The first priority may be configured by protocol specification or higher layer signaling, the first priority may be a high priority, and the first priority may also be a low priority.

The second priority may be configured by protocol specification or higher layer signaling, the second priority may be a high priority, and the second priority may also be a low priority.

The first priority may be higher than the second priority, or the first priority may be equal to the second priority.

The time unit may be one or more slots (slots), one or more sub-slots (sub-slots), one or more OFDM (Orthogonal Frequency Division Multiplexing) symbols, one or more subframes (subframes). The time cell may include a first time cell and a second time cell.

The first time unit may be a time unit in which the first transceiving node transmits the second information of the first priority. In the following example, the first time unit is described by taking the time unit in which the UE transmits the second information of the first priority as an example (but not limited to).

The second time unit may be a time unit in which the first transceiving node transmits the second information of the second priority. In the following example, the second time unit is described by taking a time unit in which the UE transmits the second information of the second priority as an example (but not limited to).

The first time unit and the second time unit may use the same time granularity or different time granularities. For example, the units of the first time unit and the second time unit may be both time slots. For another example, the first time unit may be a sub-slot, and the second time unit may be a slot.

Depending on the network type, the term "base station" or "BS" may refer to any component (or collection of components) configured to provide wireless access to a network, such as a Transmission Point (TP), a transmission-reception point (TRP), an enhanced base station (eNodeB or eNB), a 5G base station (gNB), a macrocell, a femtocell, a WiFi Access Point (AP), or other wirelessly enabled device. The base station may provide wireless access according to one or more wireless communication protocols, e.g., 5G 3GPP New radio interface/Access (NR), Long Term Evolution (LTE), LTE-advanced (LTE-A), High Speed Packet Access (HSPA), Wi-Fi 802.11a/b/G/n/ac, etc. For convenience, the terms "BS" and "TRP" are used interchangeably in this patent document to refer to network infrastructure components that provide wireless access for remote terminals. Further, depending on the network type, the term "user equipment" or "UE" may refer to any component, such as a "mobile station," subscriber station, "" remote terminal, "" wireless terminal, "" reception point, "" user equipment, "or simply a" terminal. For convenience, the term "user equipment" or "UE" is used in this patent document to refer to a remote wireless device that wirelessly accesses a BS, whether the UE is a mobile device (such as a mobile phone or smartphone) or a commonly-considered stationary device (e.g., a desktop computer or vending machine).

Referring to fig. 1, the specific steps of the present invention are as follows:

in step 101, the UE receives data and/or control signaling transmitted by a base station.

In step 102, the UE determines HARQ-ACK information of a first priority and a first time unit for transmitting the HARQ-ACK information of the first priority according to the received data and/or control signaling transmitted by the base station.

In step 103, the UE determines, according to the received data and/or control signaling sent by the base station, the uplink data and/or uplink control information of the second priority and a second time unit for sending the uplink data and/or uplink control information of the second priority.

In step 104, when the first time unit and the second time unit overlap in the time domain, the UE may determine the uplink data and/or the uplink control information to be transmitted and the uplink time unit to transmit the uplink data and/or the uplink control information according to the HARQ-ACK information of the first priority. For example, the UE may be notified of the uplink data and/or the uplink Control Information determined to be transmitted according to the HARQ-ACK Information of the first priority and the uplink time unit of the transmitted uplink data and/or the uplink Control Information through a higher layer signaling configuration or a dynamic indication of DCI (Downlink Control Information). However, the above notification method is only exemplary and not limiting, and thus any suitable predetermined method may be employed in the embodiments of the present disclosure to notify the UE of the uplink time unit of the uplink data and/or uplink control information determined to be transmitted according to the HARQ-ACK information of the first priority and the transmitted uplink data and/or uplink control information. As will be appreciated by those skilled in the art, any existing method, as well as any possible notification methods that may arise as technology evolves, are included within the scope of the present disclosure.

Fig. 2 is a flow chart of a transmission method according to another embodiment of the present disclosure. Another exemplary embodiment according to the present invention will be described below with reference to fig. 2.

In the present embodiment, the first priority is a high priority, and the second priority is a low priority.

In step 201, the UE receives data and/or control signaling transmitted by the base station.

In step 202, the UE determines HARQ-ACK information of a first priority and a first time unit for transmitting the HARQ-ACK information of the first priority according to the received data and/or control signaling transmitted by the base station. At this time, the first time unit for transmitting the HARQ-ACK information of the first priority is OFDM symbols 4 and 5 of slot 0.

In step 203, the UE determines the HARQ-ACK information of the second priority and a second time unit for sending the HARQ-ACK information of the second priority according to the received data and/or control signaling sent by the base station. At this time, the second time unit for transmitting the HARQ-ACK information of the second priority is OFDM symbols 4,5,6, and 7 of slot 0.

In step 204, when the first time unit and the second time unit overlap in the time domain, the UE may determine the HARQ-ACK information to be transmitted and the uplink time unit to transmit the HARQ-ACK information according to the HARQ-ACK information of the first priority. The determined transmitted HARQ-ACK information may be HARQ-ACK information of a first priority; the determined transmitted HARQ-ACK information may also be HARQ-ACK information of a second priority; the determined transmitted HARQ-ACK information may also be HARQ-ACK information of a first priority and HARQ-ACK information of a second priority.

In the prior art, when a first time unit for transmitting the HARQ-ACK information of the first priority and a second time unit for transmitting the HARQ-ACK information of the second priority overlap in a time domain, the HARQ-ACK information of the high priority is transmitted, and the HARQ-ACK information of the low priority is not transmitted. This may cause performance loss for low priority traffic, e.g., increased transmission delay for low priority traffic. This approach also causes a reduction in the spectral efficiency of the system. For example, when a low-priority PDSCH is successfully received, the HARQ-ACK information fed back to the base station by the UE is ACK. Due to the fact that the UE conflicts with the high-priority HARQ-ACK information, the UE only sends the high-priority HARQ-ACK information, but does not send the low-priority HARQ-ACK information, the base station can think that the PDSCH is not successfully transmitted, and therefore the PDSCH is retransmitted, and the frequency spectrum efficiency is reduced.

In a communication system, retransmission based on HARQ is an important mechanism for ensuring data transmission, and HARQ-ACK information is an important component of the retransmission mechanism of HARQ and belongs to information needing to be sent preferentially. The importance of the positive acknowledgement ACK information and the negative acknowledgement NACK information in the HARQ-ACK information is further differentiated. After one PDSCH is successfully received, the UE can transmit the received PDSCH information to a higher layer regardless of whether the base station receives the ACK transmitted by the UE. Whether the base station receives the ACK sent by the UE does not affect the user plane time delay of the downlink data and the reliability of downlink data transmission. Whether the base station receives the NACK sent by the UE directly affects the user plane delay of the downlink data and the reliability of downlink data transmission. Meanwhile, in the scenario of URLLC in NR system, in order to ensure ultra-high reliability, the correct decoding rate of data transmission is as high as 99.99999%. Based on the above knowledge, the inventors of the present application have further differentiated ACK information and NACK information in HARQ-ACK information while considering the high priority of URLLC traffic in order to solve the above-described technical problems. Therefore, the inventors of the present application propose to adopt different overlapping collision resolution schemes by adopting a predefined manner according to the content of the HARQ-ACK information, for example, according to whether the number of erroneously decoded data and/or control information contained in the HARQ-ACK information is greater than or equal to a predetermined threshold value. Also for example, different overlapping collision resolution schemes are employed depending on whether the number of correctly decoded data and/or control information contained in the HARQ-ACK information is greater than or equal to a predetermined threshold. As another example, different overlapping collision resolution schemes may be employed depending on whether the number of NACK bits (e.g., bit 0 may be used in the art to represent NACK bits in the codebook) in the HARQ-ACK codebook contained in the HARQ-ACK information is greater than or equal to a predetermined threshold number. As another example, different overlapping collision resolution schemes may be employed depending on whether the number of ACK bits in the HARQ-ACK codebook contained in the HARQ-ACK information (e.g., bit 1 may be used in the art to represent ACK bits in the codebook) is greater than or equal to a predetermined threshold number. For example, in step 204, different overlapping collision resolution schemes may be used according to whether the number of erroneously decoded data and/or control information included in the HARQ-ACK information is greater than a predetermined threshold. When the predetermined threshold is 0, the HARQ-ACK information can be divided into two types, one type is that all data and/or control information are correctly decoded; the other data and or control information is not all decoded correctly. When the predetermined threshold is 1, the HARQ-ACK information may be divided into two types, one type in which at most one data and/or control information is decoded in error, and the other type in which at least two data and/or control information is decoded in error. For example, in step 204, different overlapping collision resolution schemes may be used according to whether the number of NACKs in the HARQ-ACK codebook included in the HARQ-ACK information is greater than or equal to a predetermined threshold. When the predetermined threshold is 1, the HARQ-ACK information can be divided into two types, one type is that all bit information in the HARQ-ACK codebook is ACK; and the other is that at least one bit information in the HARQ-ACK codebook is NACK. When the predetermined threshold is 2, the HARQ-ACK information may be divided into two types, one type is that at most one bit information in the HARQ-ACK codebook is NACK; and the other is that at least two bit information in the HARQ-ACK codebook are NACK. It should be noted that the specific numerical examples of the respective predetermined thresholds disclosed above are only for illustrating the idea of the present invention, and are not intended to limit the scope of the present invention. In the present invention, the plurality of predetermined thresholds may adopt any appropriate values, and these values may be the same or different. Furthermore, these predetermined thresholds may be provided to the UE using any suitable predetermined method, for example, may be specified by a protocol, or may be configured by higher layer signaling, or may be indicated dynamically by DCI, and the like, and may be provided in the same parameter or signaling, or may be provided in different parameters or signaling. However, the above manner is merely illustrative, and not restrictive. Any existing approach, as well as any possible approach that may result from a technical development, is included within the scope of the present disclosure.

When at least one bit of the information bits in the HARQ-ACK codebook of the first priority is NACK or when all the data and/or control information to be fed back are not decoded correctly, any suitable predetermined method may be used to notify the UE of the manner of transmitting the uplink information. For example, one of the following two ways may be employed in step 205. Specifically, which method to transmit uplink information is adopted may be notified by a method such as protocol specification, or by higher layer signaling configuration, or by DCI dynamic instruction. However, the above notification method is merely exemplary, and not limiting. Any existing method, as well as any possible notification method that may occur as technology evolves, is included within the scope of the present disclosure.

In a first mode

The UE transmits HARQ-ACK information of a first priority in a first time unit. The UE may not transmit the HARQ-ACK information of the second priority, and may also delay transmitting the HARQ-ACK information of the second priority.

Mode two

And the UE simultaneously transmits the HARQ-ACK information of the first priority and the HARQ-ACK information of the second priority. The HARQ-ACK information of the first priority and the HARQ-ACK information of the second priority may be combined into one HARQ-ACK information of the third priority in a multiplexing (multiplexing) manner. The third priority may be the same as the first priority, and the third priority may also be the same as the second priority. The HARQ-ACK information of the third priority may be transmitted in the first time unit or the second time unit. Whether the HARQ-ACK information of the third priority is transmitted in the first time unit or the second time unit may be specified by a protocol, or may be configured through higher layer signaling, or may be dynamically indicated through DCI.

When the information bits in the HARQ-ACK codebook of the first priority are all ACKs or when all the data and/or control information that needs to be fed back is decoded correctly, any suitable predetermined method may be adopted to notify the UE of the manner of sending the uplink information. For example, one of the following three manners of transmitting uplink information may be adopted in step 206. Specifically, which method to use for transmitting the uplink information may be specified by a protocol, configured by a higher layer signaling, or notified by a method such as DCI dynamic indication. However, the above notification method is merely exemplary, and not limiting. Any existing method, as well as any possible notification method that may occur as technology evolves, is included within the scope of the present disclosure.

In a first mode

And the UE sends the HARQ-ACK information of the second priority in the second time unit. The UE may not transmit the HARQ-ACK information of the first priority, and the UE may also delay transmitting the HARQ-ACK information of the first priority.

Mode two

Mode III

The UE simultaneously transmits the HARQ-ACK information of the second priority and the compressed HARQ-ACK information of the first priority. The compressed HARQ-ACK information of the first priority may be ACK (using bundling), the compressed HARQ-ACK information of the first priority may also be the Bit number of the HARQ-ACK codebook of the first priority, and the compressed HARQ-ACK information of the first priority may also be the X Least Significant Bits (LSB) of the Bit number of the HARQ-ACK codebook of the first priority. By simultaneously transmitting the HARQ-ACK information of the second priority and the compressed HARQ-ACK information of the first priority, channel resources are effectively utilized while communication quality is guaranteed and communication delay is reduced.

It should be noted that the first time unit corresponds to the uplink physical resource with the first priority, and the second time unit corresponds to the uplink physical resource with the second priority. The uplink physical resource may be a PUCCH resource, and the uplink physical resource may also be a PUSCH resource.

In this embodiment, the HARQ-ACK information of the first priority and the HARQ-ACK information of the second priority collide in the time domain, and the HARQ-ACK information to be transmitted is selected according to the HARQ-ACK information of the first priority, so that the spectrum efficiency of the system can be improved and the average time delay of the system can be reduced on the premise of ensuring the transmission of the HARQ-ACK information of the first priority. The embodiment also provides a plurality of solutions, and the network can select a specific solution through high-level signaling configuration, so that the flexibility of network scheduling is increased.

Fig. 3 is a flow chart of a transmission method according to another embodiment of the present disclosure. Another exemplary embodiment according to the present invention will be described below with reference to fig. 3.

In the present embodiment, the first priority is a high priority, the second priority is a low priority, or the second priority is a high priority.

In step 301, the UE receives data and/or control signaling transmitted by the base station in a downlink time unit.

In step 302, the UE determines HARQ-ACK information of a first priority and a first time unit for transmitting the HARQ-ACK information of the first priority according to the received data and/or control signaling transmitted by the base station. At this time, the first time unit for sending the HARQ-ACK information of the first priority is OFDM symbols 4 and 5 of slot 0.

In step 303, the UE determines the PUSCH of the second priority and the second time unit for transmitting the PUSCH of the second priority according to the received data and/or control signaling transmitted by the base station. The second time unit of PUSCH transmission of the second priority at this time is OFDM symbol 4,5,6,7 of slot 0.

In step 304, when the first time unit and the second time unit overlap in the time domain, the UE may determine the transmitted HARQ-ACK information and/or PUSCH and the time unit for transmitting the HARQ-ACK information and/or PUSCH according to the HARQ-ACK information of the first priority. According to the inventive concept of the present disclosure, different overlapping collision solutions may be employed depending on the content of the HARQ-ACK information, e.g., depending on the number of ACK bits and/or NACK bits and/or whether the HARQ-ACK information is all ACK or not. For example, different overlapping collision resolution schemes are employed depending on whether the number of erroneously decoded data and/or control information contained in the HARQ-ACK information is greater than or equal to or greater than a predetermined threshold. Also for example, different overlapping collision resolution schemes are employed depending on whether the number of correctly decoded data and/or control information contained in the HARQ-ACK information is greater than or equal to a predetermined threshold. As another example, different overlapping collision resolution schemes may be employed depending on whether the number of NACK bits (e.g., bit 0 may be used in the art to represent NACK bits in the codebook) in the HARQ-ACK codebook contained in the HARQ-ACK information is greater than or equal to a predetermined threshold number. As another example, different overlapping collision resolution schemes may be employed depending on whether the number of ACK bits in the HARQ-ACK codebook contained in the HARQ-ACK information (e.g., bit 1 may be used in the art to represent ACK bits in the codebook) is greater than or equal to a predetermined threshold number. For example, in particular, in step 304, different overlapping collision resolution schemes may be used according to whether the number of erroneously decoded data and/or control information included in the HARQ-ACK information is greater than a predetermined threshold. When the predetermined threshold is 0, the HARQ-ACK information can be divided into two types, one type is that all data and/or control information are correctly decoded; the other data and or control information is not all decoded correctly. When the predetermined threshold is 1, the HARQ-ACK information may be divided into two types, one type in which at most one data and/or control information is decoded in error, and the other type in which at least two data and/or control information is decoded in error. For example, in step 304, different overlapping collision resolution schemes may be used according to whether the number of NACKs in the HARQ-ACK codebook included in the HARQ-ACK information is greater than or equal to a predetermined threshold. When the predetermined threshold is 1, the HARQ-ACK information can be divided into two types, one type is that all bit information in the HARQ-ACK codebook is ACK; and the other is that at least one bit information in the HARQ-ACK codebook is NACK. When the predetermined threshold is 2, the HARQ-ACK information may be divided into two types, one type is that at most one bit information in the HARQ-ACK codebook is NACK; and the other is that at least two bit information in the HARQ-ACK codebook are NACK. It should be noted that the specific numerical examples of the respective predetermined thresholds disclosed above are only for illustrating the idea of the present invention, and are not intended to limit the scope of the present invention. In the present invention, the plurality of predetermined thresholds may adopt any appropriate values, and these values may be the same or different. Whether greater than or equal to, furthermore, the predetermined threshold may be provided to the UE by any suitable predetermined method, for example, may be specified by a protocol, or may be configured by higher layer signaling, or may be dynamically indicated by DCI, and the predetermined thresholds may be provided in the same parameter or signaling, or may be provided in different parameters or signaling. However, the above manner is merely illustrative, and not restrictive. Any existing approach, as well as any possible approach that may result from a technical development, is included within the scope of the present disclosure.

In this embodiment, the HARQ-ACK codebook of the first priority is configured as a Dynamic codebook in the high-level signaling (3GPP TS38.213 Dynamic/Type-2 HARQ-ACK codebook).

For example, when at least one information bit in the HARQ-ACK codebook of the first priority is NACK, any suitable predetermined method may be used to notify the UE of the manner of transmitting the uplink information. For example, one of the following two ways may be employed in step 305. Specifically, which method to transmit the uplink information is adopted may be specified by a protocol, may be configured by a higher layer signaling, or may be notified by a method such as DCI dynamic indication. However, the above notification method is merely exemplary, and not limiting. Any existing method, as well as any possible notification method that may occur as technology evolves, is included within the scope of the present disclosure.

In a first mode

The UE transmits HARQ-ACK information of a first priority in a first time unit. The UE may not transmit the PUSCH of the second priority, and the UE may also delay transmitting the PUSCH of the second priority.

Mode two

And the UE simultaneously transmits the HARQ-ACK information of the first priority and the PUSCH of the second priority. And the HARQ-ACK information of the first priority and the PUSCH of the second priority adopt a multiplexing (multiplexing) mode.

The set of offsets beta-offset related to the multiplexing mode can be specified by a higher layer signaling configuration or protocol. The beta-offset is used for indicating the ratio of the uplink control information to the uplink data and/or uplink control information code rate. For example, a set of beta-offsets is configured through higher layer signaling, and an index of the set of beta-offsets is dynamically indicated through uplink scheduling DCI. Also for example, the value of beta-offset is configured through higher layer signaling.

The HARQ-ACK information of the first priority and the PUSCH of the second priority may be transmitted in the first time unit or the second time unit. The transmission of the HARQ-ACK information of the first priority and the PUSCH of the second priority in the first time unit or the second time unit may be specified by a protocol, or may be configured by higher layer signaling, or may be dynamically indicated by DCI.

For example, when all HARQ-ACK codebooks of the first priority are ACKs, any appropriate predetermined method may be employed to notify the UE of the uplink information transmission. For example, one of the following three ways of transmitting uplink information may be adopted in step 306. Specifically, which manner to transmit the uplink information is adopted may be specified by a protocol or configured by a higher layer signaling. The notification may also be performed by a DCI dynamic indication or the like. However, the above notification method is merely exemplary, and not limiting. Any existing method, as well as any possible notification method that may occur as technology evolves, is included within the scope of the present disclosure.

In a first mode

And the UE transmits the PUSCH with the second priority in the second time unit. The UE may not transmit the HARQ-ACK information of the first priority, and the UE may also delay transmitting the HARQ-ACK information of the first priority.

Mode two

The set of offsets beta-offset related to the multiplexing mode can be specified by a higher layer signaling configuration or protocol. And dynamically indicating the set of beta-offset by an index of the uplink scheduling DCI.

Mode III

And the UE simultaneously transmits the PUSCH with the second priority and the compressed HARQ-ACK information with the first priority. The compressed HARQ-ACK information of the first priority may be ACK (using bundling), the compressed HARQ-ACK information of the first priority may also be the Bit number of the HARQ-ACK codebook of the first priority, and the compressed HARQ-ACK information of the first priority may also be the X Least Significant Bits (LSB) of the Bit number of the HARQ-ACK codebook of the first priority. By simultaneously transmitting the PUSCH of the second priority and the compressed HARQ-ACK information of the first priority, the channel resources are effectively utilized while the communication quality is ensured and the communication delay is reduced.

The value of beta-offset may also be configured through higher layer signaling.

It should be noted that the PUSCH may or may not include CSI.

In this embodiment, the HARQ-ACK information of the first priority conflicts with the PUSCH of the second priority in the time domain, and the HARQ-ACK information of the first priority and/or the PUSCH of the second priority are/is selected for transmission according to the HARQ-ACK information of the first priority, so that the spectrum efficiency of the system can be improved and the average time delay of the system can be reduced on the premise of ensuring the transmission of the HARQ-ACK information of the first priority. The embodiment also provides a plurality of solutions, and the network can select a specific solution through high-level signaling configuration, so that the flexibility of network scheduling is increased.

Fig. 4 is a flow chart of a transmission method according to another embodiment of the present disclosure. Another exemplary embodiment according to the present invention will be described below with reference to fig. 4.

In step 401, the UE receives data and/or control signaling transmitted by the base station in a downlink time unit.

In step 402, the UE determines HARQ-ACK information of a first priority and a first time unit for transmitting the HARQ-ACK information of the first priority according to the received data and/or control signaling transmitted by the base station.

In step 403, the UE determines the CSI of the second priority and a second time unit for sending the CSI of the second priority according to the received data and/or control signaling sent by the base station. The CSI of the second priority is transmitted on PUCCH resources.

In step 404, when the first time unit and the second time unit overlap in the time domain, the UE may determine the HARQ-ACK information and/or CSI transmitted and the uplink time unit for transmitting the HARQ-ACK information and/or CSI according to the HARQ-ACK information of the first priority. According to the inventive concept of the present disclosure, different overlapping collision solutions may be adopted according to the content of the HARQ-ACK information, for example, according to whether the number of erroneously decoded data and/or control information contained in the HARQ-ACK information is greater than or equal to a predetermined threshold. Also for example, different overlapping collision resolution schemes are employed depending on whether the number of correctly decoded data and/or control information contained in the HARQ-ACK information is greater than or equal to a predetermined threshold. As another example, different overlapping collision resolution schemes may be employed depending on whether the number of NACK bits (e.g., bit 0 may be used in the art to represent NACK bits in the codebook) in the HARQ-ACK codebook contained in the HARQ-ACK information is greater than or equal to a predetermined threshold number. As another example, different overlapping collision resolution schemes may be employed depending on whether the number of ACK bits in the HARQ-ACK codebook contained in the HARQ-ACK information (e.g., bit 1 may be used in the art to represent ACK bits in the codebook) is greater than or equal to a predetermined threshold number. For example, in particular, in step 404, different overlapping collision resolution schemes may be used according to whether the number of erroneously decoded data and/or control information included in the HARQ-ACK information is greater than a predetermined threshold. When the predetermined threshold is 0, the HARQ-ACK information can be divided into two types, one type is that all data and/or control information are correctly decoded; the other data and or control information is not all decoded correctly. When the predetermined threshold is 1, the HARQ-ACK information may be divided into two types, one type in which at most one data and/or control information is decoded in error, and the other type in which at least two data and/or control information is decoded in error. For example, in step 404, different overlapping collision resolution schemes may be used according to whether the number of NACKs in the HARQ-ACK codebook included in the HARQ-ACK information is greater than or equal to a predetermined threshold. When the predetermined threshold is 1, the HARQ-ACK information can be divided into two types, one type is that all bit information in the HARQ-ACK codebook is ACK; and the other is that at least one bit information in the HARQ-ACK codebook is NACK. When the predetermined threshold is 2, the HARQ-ACK information may be divided into two types, one type is that at most one bit information in the HARQ-ACK codebook is NACK; and the other is that at least two bit information in the HARQ-ACK codebook are NACK. It should be noted that the specific numerical examples of the respective predetermined thresholds disclosed above are only for illustrating the idea of the present invention, and are not intended to limit the scope of the present invention. In the present invention, the plurality of predetermined thresholds may adopt any appropriate values, and these values may be the same or different. Whether greater than or equal to, these predetermined thresholds may be provided to the UE by any suitable predetermined method, for example, may be specified by a protocol, or may be configured by higher layer signaling, or may be dynamically indicated by DCI, and the predetermined thresholds may be provided in the same parameter or signaling, or may be provided in different parameters or signaling. However, the above manner is merely illustrative, and not restrictive. Any existing approach, as well as any possible approach that may result from a technical development, is included within the scope of the present disclosure.

In this embodiment, the HARQ-ACK codebook of the first priority is configured as a Semi-static codebook (3GPP TS38.213 Semi-static/Type-1 HARQ-ACK codebook) in the high layer signaling. The downlink data scheduling is based on the HARQ-ACK feedback of TB level.

When all TBs that need to be fed back and/or DCI indicating SPS PDSCH release have at least one erroneous decoding, any suitable predetermined method may be employed to inform the UE of the various ways of transmitting uplink information. For example, one of the following two ways may be employed in step 405. Specifically, which manner to transmit the uplink information is adopted may be specified by a protocol, may be configured by a higher layer signaling, or may be notified by a method such as DCI dynamic indication. However, the above notification method is merely exemplary, and not limiting. Any existing method, as well as any possible notification method that may occur as technology evolves, is included within the scope of the present disclosure. In a first mode

The UE transmits HARQ-ACK information of a first priority in a first time unit. The UE may not send the CSI of the second priority, and the UE may also delay sending the CSI of the second priority.

Mode two

And the UE simultaneously transmits the HARQ-ACK information of the first priority and the CSI of the second priority. The HARQ-ACK information of the first priority and the CSI of the second priority are multiplexed (multiplexing). The HARQ-ACK information of the first priority and the CSI of the second priority may be transmitted in the first time unit or the second time unit. The transmission of the HARQ-ACK information of the first priority and the CSI of the second priority in the first time unit or the second time unit may be specified by a protocol, or may be configured through higher layer signaling, or may be dynamically indicated through DCI.

Also, for example, when all TBs that need to be fed back and/or DCI indicating SPS PDSCH release are all decoded correctly, any suitable predetermined method may be employed to inform the UE of various ways of transmitting uplink information. For example, one of the following three manners of transmitting uplink information may be adopted in step 406. Specifically, which method to use for transmitting the uplink information may be specified by a protocol, configured by a higher layer signaling, or notified by a method such as DCI dynamic indication. However, the above notification method is merely exemplary, and not limiting. Any existing method, as well as any possible notification method that may occur as technology evolves, is included within the scope of the present disclosure.

In a first mode

The UE transmits the CSI of the second priority in a second time unit. The UE may not transmit the HARQ-ACK information of the first priority, and the UE may also delay transmitting the HARQ-ACK information of the first priority.

Mode two

And the UE simultaneously transmits the HARQ-ACK information of the first priority and the CSI of the second priority. And the HARQ-ACK information of the first priority and the PUSCH of the second priority adopt a multiplexing (multiplexing) mode.

The HARQ-ACK information of the first priority and the CSI of the second priority may be transmitted in the first time unit or the second time unit. The transmission of the HARQ-ACK information of the first priority and the CSI of the second priority in the first time unit or the second time unit may be specified by a protocol, or may be configured through higher layer signaling, or may be dynamically indicated through DCI.

Mode III

And the UE simultaneously transmits the CSI of the second priority and the compressed HARQ-ACK information of the first priority. The compressed HARQ-ACK information of the first priority may be ACK (using bundling), the compressed HARQ-ACK information of the first priority may also be the Bit number of the HARQ-ACK codebook of the first priority, and the compressed HARQ-ACK information of the first priority may also be the X Least Significant Bits (LSB) of the Bit number of the HARQ-ACK codebook of the first priority. By simultaneously transmitting the CSI of the second priority and the compressed HARQ-ACK information of the first priority, the channel resources are effectively utilized while the communication quality is ensured and the communication delay is reduced.

The HARQ-ACK information of the first priority and the CSI of the second priority may be transmitted in the first time unit or the second time unit.

In this embodiment, the HARQ-ACK information of the first priority and the CSI of the second priority collide in a time domain, and the HARQ-ACK information of the first priority and/or the CSI of the second priority are/is selected according to the HARQ-ACK information of the first priority, so that the spectrum efficiency of the system can be improved and the average time delay of the system can be reduced on the premise of ensuring the transmission of the HARQ-ACK information of the first priority. The embodiment also provides a plurality of solutions, and the network can select a specific solution through high-level signaling configuration, so that the flexibility of network scheduling is increased.

Fig. 5 is a flow chart of a transmission method according to another embodiment of the present disclosure. Another exemplary embodiment according to the present invention will be described below with reference to fig. 5.

In step 501, the UE receives data and/or control signaling transmitted by the base station in a downlink time unit.

In step 502, the UE determines HARQ-ACK information of the first priority and a first time unit for transmitting the HARQ-ACK information of the first priority according to the received data and/or control signaling transmitted by the base station.

In step 503, the UE determines the SR of the second priority and a second time unit for transmitting the SR of the second priority according to the received data and/or control signaling transmitted by the base station.

In step 504, when the first time unit and the second time unit overlap in the time domain, the UE may determine the transmitted HARQ-ACK information and/or SR and the uplink time unit for transmitting the HARQ-ACK information and/or SR according to the HARQ-ACK information of the first priority. According to the inventive concept of the present disclosure, different overlapping collision solutions may be adopted according to the content of the HARQ-ACK information, for example, according to whether the number of erroneously decoded data and/or control information contained in the HARQ-ACK information is greater than or equal to a predetermined threshold. Also for example, different overlapping collision resolution schemes are employed depending on whether the number of correctly decoded data and/or control information contained in the HARQ-ACK information is greater than or equal to a predetermined threshold. As another example, different overlapping collision resolution schemes may be employed depending on whether the number of NACK bits (e.g., bit 0 may be used in the art to represent NACK bits in the codebook) in the HARQ-ACK codebook contained in the HARQ-ACK information is greater than or equal to a predetermined threshold number. As another example, different overlapping collision resolution schemes may be employed depending on whether the number of ACK bits in the HARQ-ACK codebook contained in the HARQ-ACK information (e.g., bit 1 may be used in the art to represent ACK bits in the codebook) is greater than or equal to a predetermined threshold number. For example, in particular, in step 504, different overlapping collision resolution schemes may be used according to whether the number of erroneously decoded data and/or control information included in the HARQ-ACK information is greater than a predetermined threshold. When the predetermined threshold is 0, the HARQ-ACK information can be divided into two types, one type is that all data and/or control information are correctly decoded; the other data and or control information is not all decoded correctly. When the predetermined threshold is 1, the HARQ-ACK information may be divided into two types, one type in which at most one data and/or control information is decoded in error, and the other type in which at least two data and/or control information is decoded in error. For example, in step 504, different overlapping collision resolution schemes may be used according to whether the number of NACKs in the HARQ-ACK codebook included in the HARQ-ACK information is greater than or equal to a predetermined threshold. When the predetermined threshold is 1, the HARQ-ACK information can be divided into two types, one type is that all bit information in the HARQ-ACK codebook is ACK; and the other is that at least one bit information in the HARQ-ACK codebook is NACK. When the predetermined threshold is 2, the HARQ-ACK information may be divided into two types, one type is that at most one bit information in the HARQ-ACK codebook is NACK; and the other is that at least two bit information in the HARQ-ACK codebook are NACK. It should be noted that the specific numerical examples of the respective predetermined thresholds disclosed above are only for illustrating the idea of the present invention, and are not intended to limit the scope of the present invention. In the present invention, the plurality of predetermined thresholds may adopt any appropriate values, and these values may be the same or different. Furthermore, these predetermined thresholds may be provided to the UE using any suitable predetermined method, for example, may be specified by a protocol, or may be configured by higher layer signaling, or may be indicated dynamically by DCI, and the like, and may be provided in the same parameter or signaling, or may be provided in different parameters or signaling. However, the above manner is merely illustrative, and not restrictive. Any existing approach, as well as any possible approach that may result from a technical development, is included within the scope of the present disclosure.

In this embodiment, the HARQ-ACK codebook of the HARQ-ACK configured by the higher layer signaling with the first priority is a Semi-static codebook (3GPP TS38.213 Semi-static/Type-1 HARQ-ACK codebook). Downlink data scheduling is based on CBG level HARQ-ACK feedback.

For example, when all CBGs that need to be fed back and/or DCI indicating SPS PDSCH release have at least one erroneous decoding, any suitable predetermined method may be employed to inform the UE of the various ways of transmitting uplink information. For example, one of the following two ways may be employed in step 505. Specifically, which method to use for transmitting the uplink information may be specified by a protocol, configured by a higher layer signaling, or notified by a method such as DCI dynamic indication. However, the above notification method is merely exemplary, and not limiting. Any existing method, as well as any possible notification method that may occur as technology evolves, is included within the scope of the present disclosure.

In a first mode

The UE transmits HARQ-ACK information of a first priority in a first time unit. The UE may not transmit the SR of the second priority, and the UE may also delay transmitting the SR of the second priority.

Mode two

And the UE simultaneously transmits the HARQ-ACK information of the first priority and the SR of the second priority. The HARQ-ACK information of the first priority and the SR of the second priority are multiplexed (multiplexed). The HARQ-ACK information of the first priority and the SR of the second priority may be transmitted in the first time unit or the second time unit. Whether the HARQ-ACK information of the first priority and the SR of the second priority are transmitted in the first time unit or the second time unit may be specified by a protocol, or may be configured through higher layer signaling, or may be dynamically indicated through DCI.

Also, for example, when all CBGs that need to be fed back and/or DCI indicating SPS PDSCH release are all decoded correctly, any suitable predetermined method may be employed to notify the UE of the manner in which the uplink information is transmitted. For example, one of the following three ways may be employed at step 506. Specifically, which method to use for transmitting the uplink information may be specified by a protocol, configured by a higher layer signaling, or notified by a method such as DCI dynamic indication. However, the above notification method is merely exemplary, and not limiting. Any existing method, as well as any possible notification method that may occur as technology evolves, is included within the scope of the present disclosure.

In a first mode

The UE transmits the SR of the second priority in the second time unit. The UE may not transmit the HARQ-ACK information of the first priority, and the UE may also delay transmitting the HARQ-ACK information of the first priority.

Mode two

And the UE simultaneously transmits the HARQ-ACK information of the first priority and the SR of the second priority. The HARQ-ACK information of the first priority and the SR of the second priority are multiplexed (multiplexed).

The HARQ-ACK information of the first priority and the SR of the second priority may be transmitted in the first time unit or the second time unit. Whether the HARQ-ACK information of the first priority and the SR of the second priority are transmitted in the first time unit or the second time unit may be specified by a protocol, or may be configured through higher layer signaling, or may be dynamically indicated through DCI.

Mode III

And the UE simultaneously transmits the SR of the second priority and the compressed HARQ-ACK information of the first priority. The compressed HARQ-ACK information of the first priority may be ACK (using bundling), the compressed HARQ-ACK information of the first priority may also be the Bit number of the HARQ-ACK codebook of the first priority, and the compressed HARQ-ACK information of the first priority may also be the X Least Significant Bits (LSB) of the Bit number of the HARQ-ACK codebook of the first priority. By simultaneously transmitting the SR of the second priority and the compressed HARQ-ACK information of the first priority, channel resources are effectively utilized while communication quality is guaranteed and communication delay is reduced.

The HARQ-ACK information of the first priority and the SR of the second priority may be transmitted in the first time unit or the second time unit.

In this embodiment, the HARQ-ACK information of the first priority conflicts with the SR of the second priority in the time domain, and the HARQ-ACK information of the first priority and/or the SR of the second priority are selected for transmission according to the HARQ-ACK information of the first priority, so that the spectrum efficiency of the system can be improved and the average time delay of the system can be reduced on the premise of ensuring the transmission of the HARQ-ACK information of the first priority. The embodiment also provides a plurality of solutions, and the network can select a specific solution through high-level signaling configuration, so that the flexibility of network scheduling is increased.

It should be noted that all embodiments of the present invention are applicable to a scenario where the second information of the first priority includes HARQ-ACK and other information, and the other information may include at least one of SR, CSI, or data. When the second information of the first priority comprises HARQ-ACK and other information, the method of the invention can more fully utilize the system frequency spectrum, further improve the system frequency spectrum efficiency, and simultaneously make the service scheduling and distribution more flexible, thereby optimizing the service performance.

In another embodiment of the present invention, in order to improve the transmission performance of the PUSCH, one PUSCH may contain multiple repeated transmissions, each of which is referred to as a nominal (nominal) repetition. When a nominal retransmission crosses a slot boundary or is an uplink and downlink switching point, a nominal retransmission may be divided into at least two parts, each of which is referred to as an actual retransmission. Since the UCI and the PUSCH may have different SCS (Sub-carrier-Spacing), a slot in which the UCI is located may correspond to a slot in which a plurality of PUSCHs are located. When one nominal repetition transmission is divided into at least two actual repetition transmissions, it may also cause one UCI in a slot corresponding to one or more repetitions of the PUSCH.

A first PUSCH satisfying a timing condition is selected among a plurality of PUSCHs temporally overlapping with UCI, which may include one or more repeated transmissions of nominal, each repeated transmission of nominal including one or more actual repeated transmissions. The PUSCH transmission may be in one or more slots. Alternatively, all PUSCHs satisfying the timing condition are selected among a plurality of PUSCHs temporally overlapping with the UCI, each PUSCH possibly containing one or more repeated transmissions of the nominal, each repeated transmission of the nominal containing one or more actual repeated transmissions.

The PUSCH transmission may be in one or more slots.

Method 1

Selecting an actual repeated transmission for each time slot in which the PUSCH transmission is located, wherein the actual repeated transmission can be the first actual repeated transmission in the time slot, or the actual repeated transmission is the actual repeated transmission with the largest number of OFDM symbols in the time slot, and if the number of the actual repeated transmissions with the largest number of OFDM symbols in the time slot is greater than 1, selecting the first one. Optionally, the selected actual repeated transmission needs to satisfy a certain limitation, for example, the number of symbols is greater than or equal to N1, and for example, the number of REs (resource elements) is greater than or equal to M1.

Method two

Selecting a nominal repeated transmission for each time slot in which the PUSCH transmission is positioned, wherein the nominal repeated transmission can be the first nominal repeated transmission in the time slot, or the nominal repeated transmission is the nominal repeated transmission with the maximum number of OFDM symbols contained in the time slot, and if the number of the nominal repeated transmission with the maximum number of OFDM symbols in the time slot is more than 1, selecting the first nominal. Optionally, the selected recurring transmission of the nominal needs to satisfy a certain limitation, for example, the number of symbols is greater than or equal to N2, and for example, the number of REs (resource elements) is greater than or equal to M2.

If the repeated transmission of the nominal is divided into at least 2 actual repeated transmissions, further selecting an actual repeated transmission, the actual repeated transmission may be the first actual repeated transmission of the nominal, or the actual repeated transmission may be the actual repeated transmission with the largest number of OFDM symbols of the repeated transmission of the nominal, and if the number of the actual repeated transmission with the largest number of OFDM symbols of the repeated transmission of the nominal is greater than 1, selecting the first. If the repeated transmission of the nominal comprises a plurality of actual repeated transmissions in different time slots, for example, 2 time slots. The actual repeated transmission in each time slot can be selected in the above-described manner, or only in the first time slot. Optionally, the selected actual repeated transmission needs to satisfy a certain limitation, for example, the number of symbols is greater than or equal to N3, and for example, the number of REs (resource elements) is greater than or equal to M3.

Method III

Selecting a nominal repeated transmission for each time slot in which the PUSCH transmission is positioned, wherein the nominal repeated transmission can be the repeated transmission of the first nomial in the time slot, or the nominal repeated transmission is the repeated transmission of the nomial with the maximum number of OFDM symbols in the time slot, and if the number of the nominal repeated transmission with the maximum number of OFDM symbols in the time slot is more than 1, selecting the first nomial. Optionally, the selected recurring transmission of the nominal needs to satisfy a certain limitation, for example, the number of symbols is greater than or equal to N2, and for example, the number of REs (resource elements) is greater than or equal to M2.

Method IV

Either all the nominal repeated transmissions are selected or all the nominal repeated transmissions are selected that overlap the UCI time domain.

If the repeated transmission of the nominal is divided into at least 2 actual repeated transmissions, further selecting an actual repeated transmission, the actual repeated transmission may be the first actual repeated transmission of the nominal, or the actual repeated transmission may be the actual repeated transmission with the largest number of OFDM symbols of the repeated transmission of the nominal, and if the number of the actual repeated transmission with the largest number of OFDM symbols of the repeated transmission of the nominal is greater than 1, selecting the first. If the repeated transmission of the nominal comprises a plurality of actual repeated transmissions in different time slots, for example, 2 time slots. The actual repeated transmission in each time slot can be selected in the above-described manner, or only in the first time slot. Optionally, the selected actual repeated transmission needs to satisfy a certain limitation, for example, the number of symbols is greater than or equal to N4, and for example, the number of REs (resource elements) is greater than or equal to M4.

In all of the above methods, UCI mapping is sequentially mapped in the actual retransmission order, starting with the first actual retransmission selected. Specifically, if all the UCI information can be mapped to the selected first actual retransmission, the mapping is finished, otherwise, the UCI information without mapping is continuously mapped to the selected next actual retransmission until all the UCI information is mapped.

It should be noted that, in all the above methods, it may be further specified that the actual repeat transmission selected may not be an Orphan symbol (Orphan symbol), and if an Orphan symbol exists, the Orphan symbol is first excluded and then selected according to the above method.

In another embodiment of the present invention, when UCI is multiplexed to multiple actual repeated transmissions of PUSCH, the number of OFDM symbols occupied by each actual repeated transmission may be different.

The method of multiplexing UCI to PUSCH is specifically described below by taking HARQ-ACK as an example. The number of HARQ-ACK symbols per layer is Q'_ACKObtained according to the following formula:

Q′_ACK＝min{A,B} (1)

wherein

-O_ACKThe number of bits is HARQ-ACK;

-L_ACKa number of bits that is CRC;

-

a beta offset parameter for HARQ-ACK;

-C_UL-SCHis the number of code blocks of PUSCH;

-K_ris the size of the r-th code block, and is 0 if this code block is not transmitted.

-

The unit is the number of subcarriers for the transmission bandwidth of the PUSCH;

-

the number of subcarriers of an OFDM symbol l with PTRS in the PUSCH is shown;

-

the number of REs that can be used for transmitting UCI on OFDM symbol l of PUSCH,

the total number of OFDM symbols of the PUSCH comprises OFDM symbols of the DMRS;

-for OFDM symbols with a DMRS,

-for OFDM symbols without a DMRS,

-a scale parameter configured by higher layer signaling;

-l₀is the first OFDM symbol after the first DRMS symbol that does not contain DMRS in PUSCH.

It is to be noted that

The number of symbols for the normal repeated transmission may be the number of symbols for the actual repeated transmission.

When the number of symbols of a plurality of actual repeated transmissions that need to multiplex the same UCI is different, the REs occupied by the UCI in each actual repeated transmission may be the same or different. For the same RE occupied by UCI in each actual repeated transmission, the RE number can be determined according to the minimum value of B calculated by formula (3) in different actual repeated transmissions, or according to Q 'calculated by formulas (1), (2) and (3)'_ACKIs determined. The RE occupied by UCI in each practical repeated transmission is different, and each practical repeated transmission is respectively according to a formula(1) And (2) calculating to obtain the RE number.

It should be noted that the parameters N1, N2, N3, N4, M1, M2, M3, and M4 in the above method may be configured by higher layer signaling, may be specified by a protocol, and may be calculated by combining the parameters configured by higher layer signaling through a formula specified by the protocol. Specifically, the counts for M1, M2, M3, M4 can be obtained by equation (4).

Wherein, P can be configured through high layer signaling and can also be specified through protocol. P may also be equal to the number of OFDM symbols of the repeated transmission of nominal.

For counting other UCI, the above method may be adopted.

The embodiment provides a method for selecting the PUSCH for multiplexing when UCI and a plurality of PUSCHs are repeated, and by selecting appropriate parameters, reliability of UCI transmission can be ensured, consistency of the base station and the UE in understanding UCI multiplexing can be ensured, and transmission delay of the UCI can be ensured. And the network spectrum efficiency can be further optimized and the network performance can be improved by reasonably scheduling the base station.

Fig. 6 is a block diagram illustrating a transceiving node according to an embodiment of the present disclosure.

As shown in fig. 6, the transceiving node 600 may comprise a transceiver 610, a processor 620, and a storage 630. However, not all of the components shown are necessary. Device 600 may be implemented with more or fewer components than those shown in fig. 6. For example, according to another embodiment, the transceiver 610 and the processor 620 and the storage 630 may be implemented as a single chip. In the present disclosure, the processor 620 may be defined as a circuit, an application specific integrated circuit, or at least one processor.

Transceiver 610 may transmit signals to or receive signals from any other network entity. For example, the transceiver 610 may receive system information, synchronization signals, or reference signals from a base station.

According to an embodiment of the present disclosure, the processor 620 may control the overall operation of the transceiving node. For example, the processor 620 may control the flow of signals between respective blocks to perform the operations of the above-described flowcharts. In particular, in an embodiment according to the present disclosure, the processor 620 may control to receive first information from another transceiving node; determining second information of a first priority and a first time unit for transmitting the second information of the first priority based on the first information; determining second information of a second priority and a second time unit for transmitting the second information of the second priority based on the first information; and the second information of the first priority comprises hybrid automatic repeat request-acknowledgement (HARQ-ACK) information of the first priority, and when the first time unit and the second time unit conflict, the second information to be sent is determined according to the HARQ-ACK information of the first priority. Also, the processor 620 may control and perform any steps according to various embodiments of the present disclosure.

The storage 630 may store at least one of information transmitted/received through the transceiver 610 and information created through the processor 620. For example, the storage 630 may store information received by the transceiving node from a base station, information determined with the processor, etc.

Claims

1. A method performed by a first transceiving node in a wireless communication system, comprising:

receiving first information from a second transceiving node;

determining second information of a first priority and a first time unit for transmitting the second information of the first priority based on the first information;

determining second information of a second priority and a second time unit for transmitting the second information of the second priority based on the first information; and

the second information of the first priority comprises hybrid automatic repeat request-acknowledgement (HARQ-ACK) information of the first priority, and when a first time unit and a second time unit conflict, the second information to be sent is determined according to the HARQ-ACK information of the first priority.

2. The method of claim 1, wherein the first information comprises data and/or control information, the data comprising at least one of a transport block, a group of code blocks, or a code block; and/or

The second information comprises at least one of data, HARQ-ACK information, channel state information, CSI, or scheduling request, SR, information.

3. The method of claim 1, wherein the first priority is higher than the second priority or the first priority is equal to the second priority.

4. The method of claim 1, wherein determining the transmitted second information according to the HARQ-ACK information of the first priority comprises: and determining the sent second information according to whether the number of the data and/or the control information which are decoded in error and contained in the HARQ-ACK information of the first priority is larger than or equal to a first threshold or not, or according to whether the number of the Negative Acknowledgement (NACK) bits in the HARQ-ACK codebook contained in the HARQ-ACK information of the first priority is larger than or equal to a second threshold or not.

5. The method of claim 4, wherein the first threshold is a non-negative integer and the second threshold is a non-negative integer.

6. The method of claim 4 or 5, wherein when the number of erroneously decoded data and/or control information contained in the first priority HARQ-ACK information is greater than or equal to a first threshold or the number of NACK bits in the HARQ-ACK codebook contained in the first priority HARQ-ACK information is greater than or equal to a second threshold, determining the transmitted second information comprises one of:

determining to transmit the second information of the first priority, an

It is determined to simultaneously transmit the second information of the first priority and the second information of the second priority.

7. The method of claim 4 or 5, wherein when the number of erroneously decoded data and/or control information contained in the first priority HARQ-ACK information is greater than or equal to a first threshold or the number of NACK bits in the HARQ-ACK codebook contained in the first priority HARQ-ACK information is greater than or equal to a second threshold, determining the transmitted second information comprises one of:

determining to transmit second information of a second priority,

determining to transmit the second information of the first priority and the second information of the second priority at the same time, an

It is determined to simultaneously transmit the second information of the second priority and the compressed HARQ-ACK information of the first priority.

8. The method of claim 7, wherein the compressed first priority HARQ-ACK information comprises one of:

a 1-bit ACK in a bundled manner,

the number of bits of the codebook of HARQ-ACK information of the first priority, and

x least significant bits of a bit number of a codebook of HARQ-ACK information of the first priority.

9. The method according to claim 6 or 7, wherein said simultaneous transmissions are carried out in a multiplexed manner,

wherein the set of offsets beta-offset related to the multiplexing mode is specified by a higher layer signaling configuration or protocol, an

Wherein, one index of the set of beta-offsets is dynamically indicated by downlink control information DCI.

10. The method of claim 7, wherein when it is determined to transmit the second information of the second priority, the HARQ-ACK information of the first priority is not transmitted or transmission of the HARQ-ACK information of the first priority is delayed.

11. The method of claim 1, further comprising: and when the first time unit and the second time unit conflict, determining the time unit for sending the second information according to the second information with the first priority, wherein the time unit is the first time unit and/or the second time unit.

12. The method of claim 4, wherein at least one of the following is provided in a predefined manner: determining the manner of sending the second information, the first threshold or the second threshold, an

Wherein, through the mode that prescribes in advance including at least one of the following: by protocol specification, by higher layer signaling configuration, or by DCI dynamic indication.

13. A first transceiving node, comprising:

a transceiver configured to receive and transmit signals; and

at least one processor coupled with the transceiver and configured to perform the method of any of claims 1-12.