CN114095058A

CN114095058A - Method and apparatus for transmitting and receiving

Info

Publication number: CN114095058A
Application number: CN202110502302.9A
Authority: CN
Inventors: 付景兴; 王轶; 孙霏菲; 张飒; 熊琦; 吴敏
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2020-08-03
Filing date: 2021-05-08
Publication date: 2022-02-25

Abstract

A method and apparatus for transmitting and receiving are provided. The sending method comprises the following steps: determining a starting position number of PUSCH frequency hopping, wherein the starting position number is determined according to the number of Physical Resource Blocks (PRBs) of a Physical Uplink Shared Channel (PUSCH) scheduled by a User Equipment (UE) and the bandwidth of an uplink active bandwidth part (BWP) where the UE is located; and transmitting the PUSCH.

Description

Method and apparatus for transmitting and receiving

Technical Field

The present disclosure relates to the field of wireless communication technologies, and in particular, to a method for uplink transmission and a user equipment. In addition, the embodiment of the invention also relates to the technical field of wireless communication, and more particularly relates to a transmission method and equipment of Hybrid Automatic repeat Request Acknowledgement (HARQ-ACK) feedback information.

Background

In order to meet the increasing demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or quasi-5G communication systems. Accordingly, the 5G or quasi-5G communication system is also referred to as a "super 4G network" or a "post-LTE system".

The 5G communication system is implemented in a higher frequency (millimeter wave) band, for example, a 60GHz band, to achieve a higher data rate. In order to reduce propagation loss of radio waves and increase transmission distance, beamforming, massive Multiple Input Multiple Output (MIMO), full-dimensional MIMO (FD-MIMO), array antenna, analog beamforming, massive antenna technology are discussed in the 5G communication system.

Further, in the 5G communication system, development of improvement of the system network is ongoing based on advanced small cells, cloud Radio Access Network (RAN), ultra dense network, device-to-device (D2D) communication, wireless backhaul, mobile network, cooperative communication, coordinated multipoint (CoMP), reception side interference cancellation, and the like.

In 5G systems, hybrid FSK and QAM modulation (FQAM) and Sliding Window Superposition Coding (SWSC) have been developed as Advanced Coding Modulation (ACM), and filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA), and Sparse Code Multiple Access (SCMA) as advanced access techniques.

Fig. 1 shows a schematic diagram of the starting position of PUSCH in the frequency domain.

In order to improve the transmission performance of a Physical Uplink Shared Channel (PUSCH), frequency diversity may be increased by frequency hopping, for example, frequency hopping of the PUSCH has two starting positions, f _1 and f _2, where at time t _1, the PUSCH is transmitted at the starting position f _1 of the frequency domain, and at time t _2, the PUSCH is transmitted at the starting position f _2 of the frequency domain, as shown in fig. 1.

Further, transmission from a base station to a User Equipment (UE) is referred to as downlink, and transmission from the UE to the base station is referred to as uplink. HARQ-ACK Information of a Physical Downlink Shared Channel (PDSCH) may be transmitted on a Physical Uplink Shared Channel (PUSCH) or a Physical Uplink Control Channel (PUCCH), and the PDSCH is scheduled by Downlink Control Information (DCI) transmitted on the Physical Downlink Control Channel (PDCCH).

A Unicast (Unicast) PDSCH is one PDSCH received by one UE, and scrambling of the PDSCH is based on a Network Temporary identity value (RNTI) unique to the UE, such as a C-RNTI, and a Multicast (or Multicast)/Broadcast PDSCH is one PDSCH received simultaneously by more than one UE, and scrambling of the PDSCH is based on an RNTI common to a group of UEs, such as a Multicast/Broadcast Services (MBS) -RNTI.

Disclosure of Invention

According to an aspect of an embodiment of the present invention, there is provided a method for transmitting, including: determining a starting position number of PUSCH frequency hopping, wherein the starting position number is determined according to the number of Physical Resource Blocks (PRBs) of a Physical Uplink Shared Channel (PUSCH) scheduled by a User Equipment (UE) and the bandwidth of an uplink active bandwidth part (BWP) where the UE is located; and transmitting the PUSCH.

In one example, determining the number of starting positions for PUSCH frequency hopping comprises: receiving a starting position number of PUSCH hopping from a base station, the starting position number being determined by the base station according to the number of PRBs of a PUSCH scheduled by a UE and a bandwidth of an uplink active BWP in which the UE is located.

In one example, the receiving the starting position number of the PUSCH hopping from the base station includes: the starting position number of the PUSCH hopping is received from the base station via one of higher layer signaling, medium access layer signaling, and physical layer signaling.

In one example, determining the number of starting positions for PUSCH frequency hopping comprises: receiving the bandwidth of uplink activated BWP (broadband access point) sent by a base station and where the UE is located; receiving indication information sent by a base station; and determining the starting position number of the PUSCH frequency hopping from a plurality of candidate starting position number configurations of the PUSCH frequency hopping according to the bandwidth and the indication information.

In one example, the indication information is determined by the base station according to the number of PRBs of the PUSCH scheduled by the UE.

In one example, among the plurality of candidate starting position number configurations, one or more candidate starting position number configurations correspond to a same bandwidth of uplink active BWP.

In one example, determining a starting number of locations for PUSCH hopping includes: receiving the number of PRBs of a PUSCH scheduled by the UE and the bandwidth of an uplink activated BWP (broadband access point) where the UE is located, wherein the PRBs are sent by a base station; and determining the starting position number of PUSCH frequency hopping according to the number of PRBs of the PUSCH scheduled by the UE and the bandwidth of the uplink activated BWP where the UE is positioned.

In one example, the determining the number of starting positions of PUSCH frequency hopping includes: based on

To determine the starting position number of PUSCH hopping, wherein,

denotes a rounding-down operation, L denotes the number of PRBs of the PUSCH to be scheduled by the UE, and M denotes the bandwidth of the uplink active BWP in which the UE is located.

In one example, the receiving the starting position number of the PUSCH hopping from the base station includes: receiving Downlink Control Information (DCI) from a base station, wherein an index of a Time Domain Resource Allocation (TDRA) in the DCI indicates a starting position number of PUSCH frequency hopping.

In one example, the method further comprises: when the number of starting positions of PUSCH hopping is equal to or greater than 2, determining the order of the starting positions of the PUSCH hopping according to the order of the offsets between the starting positions of the PUSCH hopping from large to small.

In one example, the method further comprises: when the number of starting positions of PUSCH hopping is equal to or greater than 2, the order of the starting positions of DBPG hopping is determined based on the number of orthogonal frequency division multiplexing OFDM symbols contained in a demodulation reference signal DMRS bundling PUSCH group DBPG.

In one example, when the number of OFDM symbols contained in a plurality of DBPGs is the same, the order of the start positions of the DBPGs hopping is determined in the time order of the DBPGs.

In one example, when the number of OFDM symbols included in the plurality of DBPGs is different, the order of the start positions of the DBPGs hopping is determined in the order of the large to small number of symbols included in the DBPGs.

In one example, when the number of OFDM symbols included in one DBPG is less than a threshold number, a start position of hopping of the DBPG is the same as a start position of hopping of a previous DBPG or a start position of hopping of a next DBPG.

In one example, the starting position of PUSCH hopping is within the same uplink active BWP or within a different uplink active BWP.

According to another aspect of the embodiments of the present invention, there is provided a receiving method, including: determining the starting position number of PUSCH frequency hopping according to the number of Physical Resource Blocks (PRBs) of a Physical Uplink Shared Channel (PUSCH) scheduled by User Equipment (UE) and the bandwidth of an uplink activated bandwidth part (BWP) where the UE is located; and receiving a PUSCH.

In one example, the method further comprises: and informing the UE of the starting position number of the PUSCH frequency hopping.

In one example, the notifying the UE of the number of starting positions of PUSCH frequency hopping includes: the starting position number of the PUSCH hopping is received from the base station via one of higher layer signaling, medium access layer signaling, and physical layer signaling.

In one example, the method further comprises: sending the bandwidth of uplink active BWP (broadband access point) where the UE is located to the UE; and sending indication information to the UE, wherein the bandwidth and the indication information are used as a basis for determining the starting position number of the PUSCH frequency hopping from a plurality of candidate starting position number configurations of the PUSCH frequency hopping by the UE.

In one example, the method further comprises: sending the number of PRBs of a PUSCH scheduled by the UE and the bandwidth of uplink active BWP where the UE is located to the UE; and the number of PRBs of the PUSCH scheduled by the UE and the bandwidth of the uplink active BWP in which the UE is located serve as a basis for determining the starting position number of PUSCH frequency hopping by the UE.

In one example, the UE determines the starting position number of PUSCH hopping by the following formula:

wherein the content of the first and second substances,

In one example, the notifying the UE of the number of starting positions of PUSCH frequency hopping includes: and sending Downlink Control Information (DCI) to the UE, wherein the index of the Time Domain Resource Allocation (TDRA) in the DCI indicates the starting position number of the PUSCH frequency hopping.

In one example, when the number of starting positions of PUSCH hopping is equal to or greater than 2, the order of the starting positions of PUSCH hopping is determined according to a large-to-small order of offsets between the starting positions of PUSCH hopping.

In one example, when the number of starting positions of PUSCH hopping is equal to or greater than 2, the order of the starting positions of DBPG hopping is determined based on the number of orthogonal frequency division multiplexing OFDM symbols contained in a demodulation reference signal DMRS bundling PUSCH group DBPG.

In one example, the starting position of PUSCH hopping is within the same uplink active BWP or in a different uplink active BWP.

According to another aspect of the embodiments of the present invention, there is provided a method of transmitting, including: determining the number of starting positions of frequency hopping of a Physical Uplink Shared Channel (PUSCH); when the number of starting positions of PUSCH frequency hopping is equal to or greater than 2, determining the order of the starting positions of the PUSCH frequency hopping according to the order from large to small of the offset between the starting positions of the PUSCH frequency hopping; and transmitting the PUSCH.

According to another aspect of the embodiments of the present invention, there is provided a receiving method, including: determining the number of starting positions of frequency hopping of a Physical Uplink Shared Channel (PUSCH); when the number of starting positions of PUSCH frequency hopping is equal to or greater than 2, determining the order of the starting positions of the PUSCH frequency hopping according to the order from large to small of the offset between the starting positions of the PUSCH frequency hopping; and receiving a PUSCH.

According to another aspect of the embodiments of the present invention, there is provided a method of transmitting, including: determining the number of starting positions of frequency hopping of a Physical Uplink Shared Channel (PUSCH); determining an order of starting positions of frequency hopping by the DBPG based on the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols contained in a demodulation reference signal (DMRS) bundled PUSCH group (DBPG) when the number of starting positions of the PUSCH frequency hopping is equal to or greater than 2; and transmitting the PUSCH.

According to another aspect of the embodiments of the present invention, there is provided a receiving method, including: determining the number of starting positions of frequency hopping of a Physical Uplink Shared Channel (PUSCH); determining an order of starting positions of frequency hopping by the DBPG based on the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols contained in a demodulation reference signal (DMRS) bundled PUSCH group (DBPG) when the number of starting positions of the PUSCH frequency hopping is equal to or greater than 2; and receiving a PUSCH.

According to another aspect of the embodiments of the present invention, there is provided a method of transmitting, including: receiving an indication of transmission of aperiodic channel state information, CSI, on a physical uplink shared channel, PUSCH; and transmitting aperiodic CSI on a PUSCH, wherein the priority of the PUSCH and the priority of the aperiodic CSI are the same or different.

In one example, the indication is a bit included in downlink control information, DCI, that schedules PUSCH.

In one example, a correspondence is set between a priority of aperiodic CSI to be transmitted and a value of CSI request information, and the indication is the value of CSI request information.

According to another aspect of the embodiments of the present invention, there is provided a method for transmitting hybrid automatic repeat request acknowledgement HARQ-ACK information, including: the UE determines the total bit number of hybrid automatic repeat request response (HARQ-ACK) information; and the UE transmits the HARQ-ACK information with the determined total bit number on the PUCCH resources.

Preferably, the UE determining the bit number of the HARQ-ACK information comprises: and the UE receives the configuration information of the bit number of the HARQ-ACK information, and determines the bit number of the HARQ-ACK information according to the configuration information, wherein the configuration information is semi-static configuration information.

In one example, the number of bits of the HARQ-ACK information is the number of serving cells and the bundling window per cell and the number of bits per HARQ-ACK information.

In one example, the method further comprises: determining a bit number of the HARQ-ACK information based on a counting DL Downlink Allocation Index (DAI) in Downlink Control Information (DCI) of a PDCCH that schedules a PDSCH.

In one example, the UE determining the number of bits for the hybrid automatic repeat request acknowledgement HARQ-ACK information comprises: the UE receives configuration information of the number of bits of the HARQ-ACK information and receives the DAI, and when the DAI is equal to 1, determines the total number of bits of the HARQ-ACK information to be transmitted according to the transmission mode of the serving cell.

According to another aspect of the embodiments of the present invention, there is provided a method for receiving hybrid automatic repeat request acknowledgement HARQ-ACK information, including: sending downlink control information DCI; and receiving hybrid automatic repeat request acknowledgement (HARQ-ACK) information from the UE, wherein the total bit number of the HARQ-ACK information is semi-statically determined by the UE.

In one example, the total number of bits of HARQ-ACK information to be transmitted is the number of serving cells and the bundling window per cell and the number of bits per HARQ-ACK information.

In one example, the total number of bits of HARQ-ACK information transmitted by the UE is determined based on a counting DL downlink assignment index DAI in downlink control information DCI of a PDCCH scheduling a PDSCH.

In one example, when the DAI is equal to 1, the total number of bits of HARQ-ACK information to be transmitted is determined according to a transmission mode of the serving cell.

According to another aspect of the embodiments of the present invention, there is provided an apparatus for transmitting, including: a transceiver to transmit and receive signals; a processor; and a memory having stored therein instructions executable by the processor, the instructions when executed by the processor causing the processor to perform any of the foregoing methods for transmitting.

According to another aspect of an embodiment of the present invention, there is provided an apparatus for receiving, including: a transceiver to transmit and receive signals; a processor; and a memory having stored therein instructions executable by the processor, the instructions when executed by the processor causing the processor to perform any of the foregoing methods for receiving.

According to the method for transmitting and receiving and the user equipment provided by the embodiment of the invention, the frequency hopping method of the uplink transmission is determined, so that the frequency diversity gain of the uplink transmission can be improved based on the frequency hopping method of the uplink transmission, the transmission performance of the uplink is improved, and the coverage of the uplink is increased.

The embodiment of the invention also provides a method for transmitting the HARQ-ACK feedback information, which describes the transmission method of the HARQ-ACK of the multicast PDSCH.

According to an aspect of the embodiments of the present invention, there is provided a method for transmitting hybrid automatic repeat request acknowledgement HARQ-ACK information, including: receiving Downlink Control Information (DCI), wherein the DCI comprises a PUCCH resource indication which is used for indicating Physical Uplink Control Channel (PUCCH) resources of at least one User Equipment (UE) for sending HARQ-ACK information; determining Physical Uplink Control Channel (PUCCH) resources for transmitting HARQ-ACK information according to the PUCCH resource indication; and transmitting the HARQ-ACK information on the determined PUCCH resource.

In one example, the number of PUCCH resource indications is one, and a value of the PUCCH resource indication indicates one of a plurality of PUCCH resource sets configured by higher layer signaling, and each of PUCCH resources included in the indicated PUCCH resource set is respectively used for a corresponding UE of the at least one UE.

In one example, the number of the PUCCH resource indications is multiple, and each PUCCH resource indication is used to indicate a PUCCH resource used by a corresponding UE of the at least one UE to transmit HARQ-ACK information.

In one example, the number of the PUCCH resource indications is multiple, and each PUCCH resource indication is used to indicate a PUCCH resource set used for transmitting HARQ-ACK information for a corresponding UE group of the at least one UE.

In one example, the PUCCH resource indication comprises a PUCCH resource indication PRI field.

In one example, the value of the PUCCH resource indication also indicates that a portion of the at least one UE does not need to transmit HARQ-ACK information.

In one example, PUCCH candidate resources are determined by a higher layer signaling configuration; and according to the PUCCH resource indication, determining a Physical Uplink Control Channel (PUCCH) resource for transmitting HARQ-ACK information from the PUCCH candidate resources.

In one example, the transmit power control, TPC, command is included in the DCI, and the method further comprises: and determining whether to apply the TPC command according to the time unit of the DCI.

In one example, a plurality of transmit power control, TPC, commands are also included in the DCI and each of the plurality of TPC commands corresponds to a respective UE and/or group of UEs of the at least one UE.

In one example, parameters for power control of a PUCCH transmitting HARQ-ACK for multicast PDSCH are configured separately from parameters for power control of a PUCCH transmitting HARQ-ACK for unicast PDSCH.

In one example, a plurality of downlink assignment indices, DAIs, are also included in the DCI, each for a respective one of the at least one UE to transmit a count of HARQ-ACKs.

In one example, an enable field is also included in the DCI for at least one of: enabling or disabling the PUCCH resources; enabling or disabling the PUCCH resource indication; enable or disable TPC commands; and enable or disable the DAI.

In one example, the DCI is divided into a first portion of DCI and a second portion of DCI, the first portion of DCI is transmitted on a physical downlink control channel, PDCCH, and the second portion of DCI is transmitted on a PDCCH-scheduled multicast physical downlink shared channel, PDSCH, and includes at least one of the PUCCH resource indication, TPC command, and DAI.

In one example, an enable field is included in the first portion of DCI, the enable field for at least one of: enabling or disabling the PUCCH resources; enabling or disabling the PUCCH resource indication field; enable or disable the TPC command field; and enable or disable the DAI field.

In one example, the TPC command field indicates whether to transmit a HARQ-ACK.

In one example, a DCI format indication field in the DCI is used as a PUCCH resource enable/disable field to indicate whether to transmit HARQ-ACK.

In one example, the value of the downlink data to uplink acknowledgement field in the DCI includes a value indicating that no HARQ-ACK is transmitted.

In one example, the method further comprises: and determining the maximum retransmission times aiming at the HARQ-ACK of the same multicast Physical Downlink Shared Channel (PDSCH).

In one example, the method further comprises: receiving information of a time window for multicasting the PDSCH; and receiving a multicast PDSCH according to the information.

According to another aspect of the embodiments of the present invention, there is provided a method for receiving hybrid automatic repeat request acknowledgement HARQ-ACK information, including: sending Downlink Control Information (DCI), wherein the DCI comprises a PUCCH resource indication which is used for indicating Physical Uplink Control Channel (PUCCH) resources of at least one User Equipment (UE) for sending HARQ-ACK information; and receiving HARQ-ACK information on the PUCCH resources.

In one example, a plurality of transmit power control, TPC, commands are also included in the DCI and each of the plurality of TPC commands is for a respective UE and/or group of UEs of the at least one UE.

In one example, an enable field is included in the first portion of DCI, the enable field for at least one of: enabling or disabling the PUCCH resources; enabling or disabling the PUCCH resource indication; enable or disable TPC commands; and enable or disable the DAI.

In one example, the TPC command field indicates whether to transmit a HARQ-ACK.

Further, in the present application, a method for transmitting HARQ-ACK of multicast PDSCH is described, so that on the premise of saving PDSCH and PDCCH in the multicast technology, HARQ-ACK feedback information of multicast PDSCH can be accurately transmitted using as few PUCCH resources as possible with reasonable power.

Drawings

The present invention will be more readily understood from the following detailed description taken in conjunction with the accompanying drawings, wherein like reference numerals designate like structural elements, and in which:

fig. 1 shows a schematic diagram of the starting position of PUSCH in the frequency domain;

fig. 2 is a flow chart illustrating an exemplary method of uplink transmission according to an embodiment of the present invention;

fig. 3 shows a schematic diagram of a starting position of PUSCH hopping according to an embodiment of the present invention;

fig. 4 illustrates a schematic diagram of determining an order of starting positions of PUSCH hopping according to an embodiment of the present invention;

fig. 5 illustrates a schematic diagram of an OFDM symbol in a DBPG according to an embodiment of the present invention;

fig. 6 shows a schematic diagram of joint channel estimation for DMRS in PUSCH;

fig. 7 is a diagram illustrating a start position of frequency hopping of a DBPG when the number of symbols contained in the DBPG is the same according to an embodiment of the present invention;

fig. 8 is a diagram illustrating a start position of frequency hopping of a DBPG when the number of symbols contained in the DBPG is not the same according to an embodiment of the present invention;

fig. 9 illustrates a schematic diagram of a starting position of PUSCH hopping among different uplink active BWPs according to an embodiment of the present invention;

fig. 10 is a flow chart illustrating an exemplary method of uplink transmission according to an embodiment of the present invention;

fig. 11 shows a flow diagram of an exemplary method of uplink transmission according to an embodiment of the invention;

fig. 12 shows a flow diagram of an exemplary method of uplink transmission according to an embodiment of the invention;

fig. 13 shows a flow diagram of an exemplary method of uplink transmission according to an embodiment of the invention;

fig. 14 shows a flow diagram of an exemplary method of uplink transmission according to an embodiment of the invention;

fig. 15 shows a flow diagram of an exemplary method of uplink transmission according to an embodiment of the invention;

fig. 16 shows a flowchart of an exemplary method for transmitting HARQ-ACK according to an embodiment of the present invention;

fig. 17 shows a flowchart of an exemplary method for receiving HARQ-ACK according to an embodiment of the present invention;

fig. 18 shows a diagram of an example of UE feedback HARQ-ACK;

fig. 19 shows a diagram of another example of UE feedback HARQ-ACK;

fig. 20 shows a schematic flow diagram of a method for transmitting hybrid automatic repeat request acknowledgement, HARQ-ACK, information according to an embodiment of the invention;

fig. 21 illustrates a schematic diagram of an example in which DCI is divided into 2 parts according to an embodiment of the present invention;

fig. 22 shows a schematic diagram of a transmission method of HARQ-ACK for a multicast PDSCH;

fig. 23 illustrates a diagram of a transmission method of HARQ-ACK for a multicast PDSCH according to an embodiment of the present invention;

fig. 24 shows a diagram in which different UEs feed back HARQ-ACK information using the same PUCCH resource;

fig. 25 shows a schematic diagram of a multicast PDSCH within a time window according to an embodiment of the invention;

fig. 26 shows a schematic diagram of multicast PDSCH within a time window and multicast PDSCH outside the time window according to an embodiment of the invention;

fig. 27 shows a schematic diagram of a method for receiving hybrid automatic repeat request acknowledgement, HARQ-ACK, information according to an embodiment of the invention;

FIG. 28 shows a schematic block diagram of an apparatus for transmitting according to an embodiment of the present invention; and

fig. 29 shows a schematic block diagram of an apparatus for receiving according to an embodiment of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, various exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings to explain the present disclosure in further detail.

The example embodiments described herein are not meant to be limiting. The aspects of the present disclosure, as generally described herein, and illustrated in the figures, can be arranged, substituted, combined, separated, and designed in a wide variety of different configurations, all of which are contemplated herein. Furthermore, the features shown in each figure may be used in combination with each other, unless the context indicates otherwise. Thus, the drawings are to be generally regarded as forming a part of one or more general embodiments, but it is to be understood that not all illustrated features are required for each embodiment.

In order to improve the frequency diversity of the PUSCH, the PUSCH may be transmitted by using a frequency hopping method, and the starting positions of the PUSCH in frequency domain transmission may be 2, for example, the starting positions of frequency hopping are f _1 and f _ 2. In addition, the starting position of the frequency hopping may be more than 2, for example, the starting position of the PUSCH transmission in the frequency domain may be 4, for example, the starting positions of the frequency hopping are f _1, f _2, f _3, and f _ 4. The number of starting positions of the frequency hopping is related to the Bandwidth in which the UE can operate, for example, when the frequency hopping range of the UE is an Active Bandwidth Part (Active Bandwidth Part) in which the UE is located, the number of starting positions of the frequency hopping is related to the Bandwidth of the Active Bandwidth Part (Active Bandwidth Part) in which the UE is located. The frequency hopping range of the UE is the sum of the frequency bands occupied by the UE for multiple frequency hopping. Or, when the frequency hopping range of the UE is the carrier where the UE is located, the number of the starting positions is related to the bandwidth of the carrier where the UE is located.

In this document, the PUSCH is described as an example, but the method herein may be applied to a Physical Uplink Control Channel (PUCCH) or a bypass (sidelink) transmission of UE transmission, and the PUSCH is described as an example below.

Since the UE may be located at the edge of a cell, uplink transmission power of the UE is limited, and the number of Physical Resource Blocks (PRBs) that the UE can be scheduled is limited, at this time, the frequency diversity effect of frequency hopping cannot be well exerted if the number of starting positions of the frequency hopping is determined according to the bandwidth in which the UE can operate. For example, the bandwidth of the uplink active BWP where the UE is located is 40 PRBs, the bandwidth of the uplink active BWP is 40 PRBs, and the UE has 2 starting points, for example, the first PRB and the twenty-first PRB respectively, in the frequency hopping of the uplink active BWP. However, since the UE is located at the edge of the cell, the PUSCH of the UE can schedule 10 PRBs at most according to the maximum transmission power requirement of the UE, and at this time, only 2 hopping start points, that is, by hopping, the PUSCH of the UE is transmitted at the first PRB to the tenth PRB and the twenty-first PRB to the thirty-third PRB, but cannot be transmitted at the eleventh to twenty PRB and the thirty-first to forty PRB. As a result, the frequency diversity gain is not sufficiently exerted.

According to the embodiment of the present invention, in order to fully exert the frequency diversity effect of frequency hopping, the number of starting positions of PUSCH frequency hopping may not be completely determined by the bandwidth of uplink active BWP, and will be described in detail hereinafter with reference to the accompanying drawings.

Fig. 2 is a flow chart illustrating an exemplary method 200 of uplink transmission in accordance with an embodiment of the present invention. The method 200 may be implemented at the UE side.

As shown in fig. 2, in the method 200, at S201, a starting position number of PUSCH frequency hopping is determined, which is determined according to the number of physical resource blocks PRB of a physical uplink shared channel PUSCH scheduled by a user equipment UE and a bandwidth of an uplink active bandwidth part BWP in which the UE is located.

At S202, the PUSCH is transmitted.

Therefore, according to the embodiments of the present invention, by determining the frequency hopping method of the uplink transmission, the frequency diversity gain of the uplink transmission can be improved based on the frequency hopping method of the uplink transmission, so as to improve the transmission performance of the uplink and increase the coverage of the uplink.

Hereinafter, various examples for determining the starting position number of PUSCH hopping based on the number of PRBs of PUSCH to be scheduled by the UE and the bandwidth of uplink active BWP in which the UE is located will be described in detail with reference to the accompanying drawings.

According to the embodiment of the present invention, steps S201 and S202 may also be performed simultaneously on the base station side, which will be described in detail later.

First implementation

In the first implementation manner, after the base station determines the starting position number of the PUSCH frequency hopping, the starting position number of the PUSCH frequency hopping may be notified to the UE through higher layer signaling.

The method has the advantages that the base station determines the appropriate starting position number of the PUSCH frequency hopping according to the number of PRBs of the PUSCH which can be scheduled by the UE and the bandwidth of the uplink activated BWP in which the UE is located, and informs the UE through high-layer signaling, for example, the UE receives the high-layer signaling and knows that the starting position number of the PUSCH frequency hopping is 4, or the UE receives the high-layer signaling and knows that the starting position number of the PUSCH frequency hopping is 2.

Second implementation

In the second implementation manner, multiple candidate start position number configurations of PUSCH frequency hopping may be determined, for example, multiple candidate start position number configurations of PUSCH frequency hopping may be predetermined by a protocol or a predetermined rule, and then the base station determines, according to the number of PRBs of PUSCH that the UE can schedule and the bandwidth of uplink active BWP where the UE is located, the start position number of one PUSCH frequency hopping from the multiple candidate start position number configurations as the current start position number of PUSCH frequency hopping, and notifies the UE through higher layer signaling. In one example, the one or more candidate starting-position number configurations may correspond to the same bandwidth of the uplink active BWP.

For example, as shown in table 1, there are two configurations for the starting position number of PUSCH frequency hopping, configuration 1 and configuration 2, respectively, corresponding to the same bandwidth for uplink active BWP, and configuration 1 and configuration 2 may correspond to different starting position numbers of PUSCH frequency hopping. Here, L1, L2, M1, and M2 respectively indicate the number of start positions of different PUSCH hopping frequencies.

Table 1: initial position number of PUSCH frequency hopping

In one example, the UE may receive a bandwidth of uplink active BWP where the UE is located and indication information sent by the base station, and then determine a starting position number of PUSCH frequency hopping from a plurality of candidate starting position number configurations of PUSCH frequency hopping according to the bandwidth and the indication information. The indication information may be determined by the base station according to the number of PRBs of the PUSCH scheduled by the UE.

For example, the base station may know that the starting position number of PUSCH frequency hopping is configuration 1 in table 1 through indication information, e.g., high layer signaling, and then determine that the starting position number of current PUSCH frequency hopping is L1 according to the number of PRBs of PUSCH that it can schedule, e.g., "50 or less".

The method has the advantages that the base station determines the appropriate starting position number of the PUSCH frequency hopping according to the number of PRBs of the PUSCH which can be scheduled by the UE and the bandwidth of the uplink activated BWP where the UE is located, and informs the UE through high-layer signaling, for example, the UE receives the high-layer signaling and knows that the starting position number of the PUSCH frequency hopping is configuration 1 in Table 1.

Third implementation mode

In a third implementation manner, multiple candidate starting position number configurations of PUSCH frequency hopping may be determined through a protocol, and then the base station may determine, according to the number of PRBs of the PUSCH that the UE can schedule and the bandwidth of the uplink active BWP where the UE is located, that the starting position number of one PUSCH frequency hopping from the multiple candidate starting position number configurations is the current starting position number of PUSCH frequency hopping, and notify the UE through media access layer signaling or physical layer signaling, where the physical layer signaling may be indicated by bit Information in Downlink Control Information (DCI) of the scheduling PUSCH, for example, as shown in table 1, the starting position number of PUSCH frequency hopping has two configurations, which are configuration 1 and configuration 2, respectively, and configuration 1 and configuration 2 may correspond to different starting position numbers of PUSCH frequency hopping corresponding to the same bandwidth of the uplink active BWP.

One specific implementation of signaling is as follows.

Format (Format)0_1

-the number of hopping start positions indicates-n bits, n being a natural number. The number of bits indicated by the number of hopping start positions is determined according to the configuration of the number of start positions for PUSCH hopping in uplink active BWP. For example, when the number of start positions of PUSCH frequency hopping is two configurations, the number of frequency hopping start positions indicates 1 bit, for example, when the frequency hopping start position number indication value is "0", the number of start positions of PUSCH frequency hopping is configuration 1, and when the frequency hopping start position number indication value is "1", the number of start positions of PUSCH frequency hopping is configuration 2.

The method has the advantages that the base station dynamically determines the appropriate starting position number of the PUSCH frequency hopping according to the number of PRBs of the PUSCH which can be scheduled by the UE and the bandwidth of the uplink activated BWP in which the UE is positioned, and informs the UE through media access layer signaling or physical layer signaling, so that the more appropriate starting position number of the PUSCH frequency hopping can be selected more timely.

Fourth mode of implementation

In the fourth implementation, the number of starting positions of PUSCH hopping may be determined jointly from the number of PRBs of the scheduled PUSCH and the number of PRBs of the uplink active BWP, and may be determined simultaneously on both the base station side and the UE side without additional signaling to inform the UE of the number of starting positions of PUSCH hopping.

Assuming that the number of PRBs of the PUSCH to be scheduled by the UE is L and the bandwidth of the uplink active BWP where the UE is located is M, the starting position number of PUSCH frequency hopping may be determined based on the following equation:

wherein the content of the first and second substances,

indicating a rounding down operation.

Table 2 shows a specific example. As shown in Table 2, when

When r1 or more, the number of starting positions of PUSCH hopping is L1, when

When r1 is less than r2 or more, the number of starting positions of PUSCH hopping is L2, and when r is greater than r2

When r2 is smaller, the number of starting positions of PUSCH hopping is L3. The values of r1 and r2 may be set as desired.

For example, assume M equals 40, r1 equals 4, r2 equals 2, L1 equals 4, L2 equals 2, and L3 equals 1. When L is equal toAt the time of 9, the water-soluble organic acid,

the starting position number of PUSCH frequency hopping is L1 ═ 4; when L is equal to 15, lower

And is

The starting position number of the PUSCH frequency hopping is L2 ═ 2; when L is equal to 25, the number of bits,

the starting position number of PUSCH frequency hopping is L3 ═ 1.

Table 2: initial position number of PUSCH frequency hopping

Wherein the relationship between L1, L2, and L3 may be: l3 [ -L2 [ -L1 [ ]

The method has the advantages that the starting position number of the PUSCH frequency hopping is determined according to the number of the PRBs of the PUSCH actually scheduled by the UE and the number of the PRBs of the uplink activated BWP where the UE is located, no extra signaling is needed for informing the UE, and the appropriate starting position number of the PUSCH frequency hopping can be selected in time.

Fifth embodiment

In the fifth implementation, the base station may inform the UE of the number of starting positions of the multiple PUSCH hopping frequencies in an implicit manner. The indication may be performed using an index value of Time Domain Resource Allocation (TDRA) Information in Downlink Control Information (DCI) for scheduling the PUSCH.

For example, as shown in table 3, there are three configurations for the starting position number of PUSCH hopping, configuration 1, configuration 2, and configuration 3, and it is assumed that the starting position number of PUSCH hopping for configuration 1 is h _1, the starting position number of PUSCH hopping for configuration 2 is h _2, and the starting position number of PUSCH hopping for configuration 3 is h _3, for example, h _1 is equal to 4, h _2 is equal to 2, and h _3 is equal to 1. However, table 3 is merely exemplary, and those skilled in the art will appreciate that the configuration of the number of start positions of PUSCH frequency hopping may be more or less than 3.

Table 3: PUSCH TDRA table

For example, when the index value of the TDRA information is one of 1 to 5, the number of start positions indicating PUSCH frequency hopping is h _ 1; when the index value of the TDRA information is one of 6 to 10, indicating that the number of starting positions of PUSCH frequency hopping is h _ 2; and when the index value of the TDRA information is one of 11 to 16, indicates that the starting position number of PUSCH hopping is h _ 3.

In Table 3, S denotes the number of start symbols, L denotes the symbol length, and K₂Representing the transmit-receive time offset of the signal.

The method has the advantages that the starting position number of the PUSCH frequency hopping is determined according to the UE condition, and then the TDRA information indicates that the UE is informed without extra signaling, so that the proper starting position number of the PUSCH frequency hopping can be selected in time.

According to the embodiment of the present invention, the PUSCH may be a single PUSCH or a PUSCH repetition, that is, the time unit for PUSCH frequency hopping may be one PUSCH or one PUSCH repetition. In addition, the PUSCH described above may also be a PUSCH group, for example, the PUSCH described above may be a PUSCH group composed of a plurality of PUSCHs employing joint channel estimation.

When there is more than one starting position of PUSCH frequency hopping, that is, the number of starting positions of PUSCH frequency hopping is greater than 2, and there are multiple PUSCH transmissions, the determination of the order of the starting positions of PUSCH frequency hopping is a problem to be solved every PUSCH transmission.

The frequency hopping operation of the PUSCH is to increase the frequency diversity effect of the PUSCH transmission, and in multiple transmissions (repeated transmissions) of the PUSCH, the frequency domain difference of different PUSCH transmissions is made the largest as possible, so that the frequency diversity effect is larger, and the number of times of PUSCH repetition for transmitting the same data information may be larger or smaller. When the repeated transmission times of the PUSCH are less, the purpose of determining different initial positions of the frequency hopping PUSCH is to enable the difference of different PUSCH transmissions in the frequency domain to be maximum.

The determination of the starting position of the PUSCH frequency hopping may be performed at least one of the base station side and the UE side.

One method for determining different starting positions of hopping PUSCH may be to determine the order of the starting positions of PUSCH hopping according to a large to small order of offsets between the starting positions of PUSCH hopping. For example, the starting position of the PUSCH hopping frequency for the first transmission is offset (offset) 0, the starting position of the PUSCH hopping frequency for the second transmission is the starting position of the PUSCH hopping frequency having the offset (offset) that is the maximum value of all offsets, and so on.

Fig. 3 illustrates a schematic diagram of a start position of PUSCH frequency hopping according to an embodiment of the present invention.

As shown in fig. 3, there are four starting positions of PUSCH hopping and three offset positions, the starting position f _1 of the first PUSCH hopping is offset to 0, the starting position f _2 of the second PUSCH hopping is offset _1 from the starting position of the first PUSCH hopping, the starting position f _3 of the third PUSCH hopping is offset _2 from the starting position of the first PUSCH hopping, and the starting position f _4 of the fourth PUSCH hopping is offset _3 from the starting position of the first PUSCH hopping.

Fig. 4 illustrates a schematic diagram of determining an order of starting positions of PUSCH hopping according to an embodiment of the present invention.

Continuing with the example in fig. 3, to maximize the gain of frequency hopping, as shown in fig. 4, the starting position of PUSCH frequency hopping for the ith transmission is offset (offset) 0, and the offset (offset) of the starting position of PUSCH frequency hopping for the (i + 1) th transmission is the maximum value among offset _1, offset _2, and offset _3, i.e., max { offset _1, offset _2, and offset _3 }. For example, if offset _1 is 2/4BWP bandwidth, offset _2 is 1/4BWP bandwidth, and offset _3 is 3/4BWP bandwidth, max { offset _1, offset _2, and offset _3} are 3/4BWP bandwidth, so the offset of the starting position of the PUSCH hopping frequency for the i +1 th transmission is 3/4BWP bandwidth, that is, the starting position of the PUSCH hopping frequency is f _ 4. Then, the offset (offset) of the starting position of the PUSCH hopping frequency for the i +2 th transmission is set to be the maximum value of the remaining offsets, that is, max { offset _1, offset _2} ═ 2/4BWP bandwidth, that is, the starting position of the PUSCH hopping frequency is f _ 2. The offset (offset) of the starting position of the PUSCH frequency hopping for the i +3 th transmission is offset _2, i.e., the starting position of the PUSCH frequency hopping is f _ 3. If there are i +4 th transmissions, the starting position of its PUSCH hopping may again be f _1, and so on.

Here, i is an integer, for example, i ═ 1.

The method has the advantages that when the frequency hopping times are relatively small, the UE can obtain the maximum frequency diversity gain, and the performance of the PUSCH is improved.

Fig. 5 illustrates a schematic diagram of an OFDM symbol in a DBPG according to an embodiment of the present invention.

Fig. 6 shows a schematic diagram of joint channel estimation for DMRS in PUSCH.

In order to improve the accuracy of channel estimation based on a Demodulation Reference Signal (DMRS), joint channel estimation may be performed through DMRSs in a plurality of, i.e., at least two PUSCHs based on more than one PUSCH transmission time, so that the accuracy of channel estimation may be increased, thereby improving the error rate performance for demodulating the PUSCH. The multiple (i.e., at least one) PUSCH or PUSCH repetitions for joint channel estimation are referred to as DMRS Bundled PUSCH Groups (DBPG). Since the PUSCH in the DMRS bundled PUSCH group is continuous, that is, the middle is not divided by the unavailable OFDM symbols or downlink OFDM symbols, and the occurrence of the unavailable OFDM symbols is not regular, this may cause that the number of OFDM symbols in different DBPGs may be unequal or even very different.

For example, as shown in fig. 5, the first DBPG includes 12 OFDM symbols, the second DBPG includes 2 OFDM symbols, and the third DBPG includes 13 OFDM symbols, and the start position of the frequency hopping is 2. At this time, the start position offset of the DBPG hop frequency of the first transmission is 0, the start position offset of the DBPG hop frequency of the second transmission is offset, and the start position offset of the DBPG hop frequency of the third transmission is 0, so that the first DBPG and the third DBPG having the start position offset of 0 have 25 OFDM symbols in total, and the second DBPG having the start position offset of offset has 2 OFDM symbols. Thus, most of the transmission time is at the frequency domain position shifted by 0 in the starting position, and the transmission time is very small at the frequency domain position shifted by offset in the starting position, and if the PUSCH transmitted at the frequency domain position shifted by 0 in the starting position and the PUSCH transmitted at the frequency domain position shifted by offset in the starting position are jointly decoded, the frequency diversity gain is not significant.

According to an embodiment of the present invention, in order to guarantee a frequency diversity gain of PUSCH hopping, in another method of determining an order of starting positions of PUSCH hopping, the number of OFDM symbols in DBPG may be considered, that is, the order of starting positions of DBPG hopping may be determined based on the number of OFDM symbols contained in DBPG.

Hereinafter, a method of determining an order of start positions of PUSCH hopping in consideration of the number of OFDM symbols in the DBPG according to an embodiment of the present invention will be described in detail to improve frequency diversity gain of hopping.

Sixth mode of implementation

In a sixth implementation, the starting position of the DBPG frequency hopping is determined according to how many symbols the DBPG contains. For example, the start positions of the DBPG hopping frequencies may be sequentially selected in order of the number of symbols included in the DBPG from large to small.

Fig. 7 illustrates a schematic diagram of a start position of frequency hopping of a DBPG when the number of symbols contained in the DBPG is the same according to an embodiment of the present invention.

As shown in fig. 7, if the number of symbols contained in a plurality of DBPGs is the same, the order of the start positions of the DBPGs hopping can be determined in the time order of the DBPGs. For example, the DBPG has four hop start positions, f _1, f _2, f _3, and f _4, respectively, and the number of symbols contained in the DPBG is the same. In this case, it is assumed that the order of the start positions of the DBPG hopping may be: f _1 → f _4 → f _2 → f _3, that is, the start position of the DBPG hop frequency for the first transmission is f _1, the start position of the DBPG hop frequency for the second transmission is f _4, the start position of the DBPG hop frequency for the third transmission is f _2, and the start position of the DBPG hop frequency for the fourth transmission is f _ 3.

Fig. 8 illustrates a schematic diagram of a start position of frequency hopping of a DBPG when the number of symbols contained in the DBPG is not the same according to an embodiment of the present invention.

As shown in fig. 8, if the number of symbols contained in the plurality of DPBGs is not the same, the start position f _1 → f _4 → f _2 → f _3 of the DBPG hopping frequency may be sequentially selected in order of the number of symbols contained in the DBPG from large to small. Here, it is still assumed that at the beginning, the order of the starting positions of the DBPG hopping is: f _1 → f _4 → f _2 → f _ 3. Assuming that the DBPG transmitted for the first time contains L1 OFDM symbols, the DBPG transmitted for the second time contains L2 OFDM symbols, the DBPG transmitted for the third time contains L3 OFDM symbols, and the DBPG transmitted for the fourth time contains L4 OFDM symbols, and L2> L1> L4> L3, it can be determined that: the starting position of the DBPG frequency hopping of the second transmission is f _1, the starting position of the DBPG frequency hopping of the first transmission is f _4, the starting position of the DBPG frequency hopping of the fourth transmission is f _2, and the starting position of the DBPG frequency hopping of the third transmission is f _ 3.

Seventh implementation mode

In a seventh implementation, when the number of OFDM symbols contained in one DBPG is less than a threshold number, the start position of hopping of the DBPG is the same as the start position of hopping of a previous DBPG or the start position of hopping of a next DBPG.

For example, when the number of OFDM symbols included in a DBPG is less than S1 of a protocol preset or higher layer signaling configuration (e.g., S1 is a positive integer, equal to 1, or 2, or 3, etc.), the DBPG adopts the same start position of frequency hopping as DBPGs before or after the DBPG. For example, S1 is equal to 3, and when the number of OFDM symbols included in one DBPG is less than 3, the DBPG adopts the same start position of hopping frequency as the DBPG preceding the DBPG. For example, the DBPG has four hop start positions, f _1, f _2, f _3, and f _4, respectively, and the DBPG hops in the order: f _1 → f _4 → f _2 → f _ 3. Assuming that there are four DPBG transmissions, the first transmission of DBPG contains 12 OFDM symbols, the second transmission of DBPG contains 2 OFDM symbols, the third transmission of DBPG contains 7 OFDM symbols, and the fourth transmission of DBPG contains 8 OFDM symbols. Thus, according to this example two, the starting position of the DBPG hop for the first transmission is f _ 1; if the number of OFDM symbols contained in the DBPG transmitted for the second time is less than 3, the starting position of the DBPG frequency hopping transmitted for the second time is the same as the starting position of the DBPG frequency hopping transmitted for the first time, and the starting position is f _ 1; the start position of the DBPG hop frequency of the third transmission is f _4, and the start position of the DBPG hop frequency of the fourth transmission is f _ 2.

Here, although it is described that when the number of OFDM symbols included in one DBPG is less than the threshold number, the start position of hopping of the DBPG is the same as the start position of hopping of exactly one previous DBPG or the start position of hopping of exactly the next DBPG, embodiments of the present invention are not limited thereto, and the start position of hopping of the DBPG may also be the same as one of the start positions of hopping of the previous DBPG or one of the start positions of hopping of the next DBPG.

The method has the advantages that when the number of symbols of the DBPG is small, the UE can obtain larger frequency diversity gain, and the performance of the PUSCH is improved.

Fig. 9 illustrates a schematic diagram of a starting position of PUSCH hopping between different uplink active BWPs according to an embodiment of the present invention.

According to the embodiment of the present invention, the starting position of the PUSCH frequency hopping may be within the same uplink active BWP or may be located in different uplink active BWPs.

As described above, PUSCH hopping is hopping within UE-configured active BWP, and thus no time adjustment is required between different hopping frequencies. If the bandwidth capability of the UE is limited, in order to obtain a relatively large frequency diversity gain, the frequency hopping operation between BWPs may be adopted, that is, the PUSCH transmission is performed with frequency hopping operation between different BWPs in a certain order.

For example, one PUSCH is repeatedly transmitted 3 times, and the UE performs frequency hopping among 3 BWPs, that is, the first PUSCH is repeatedly transmitted on BWP-1, the second PUSCH is repeatedly transmitted on BWP-2, and the third PUSCH is repeatedly transmitted on BWP-3, as shown in fig. 9, with an interval between different PUSCH transmissions being adjusted. In addition, when the PUSCH hops to one BWP, the BWP becomes active BWP on which the UE transmits PUCCH or detects PDCCH candidates. When the frequency hopping is finished, one scheme is that the UE automatically returns to the initial active BWP, as shown in fig. 9, after the third PUSCH repetition transmission on BWP-3 is finished, the active BWP becomes the BWP-1 at which the PUSCH repetition transmission starts. The other scheme is that the BWP where the PUSCH is sent by the UE finally continues to be used as the activated BWP, and the activated BWP is the BWP-3 of which the PUSCH repeated transmission is finished after the third PUSCH repeated transmission on the BWP-3 is finished.

The method has the advantages that when the bandwidth capability of the UE is limited, the UE can obtain larger frequency diversity gain, and the performance of the PUSCH is improved. According to the embodiment of the present invention, whether the UE employs frequency hopping within BWP or between BWP may be indicated by higher layer signaling configuration or physical layer signaling, so that the frequency diversity gain and the resource occupation of the interval required for frequency hopping between BWPs can be balanced.

Fig. 10 is a flow chart illustrating an exemplary method 1000 of uplink transmission in accordance with an embodiment of the present invention. The method 1000 may be implemented at the base station side.

As shown in fig. 10, in the method 1000, at S1001, a starting position number of PUSCH frequency hopping is determined according to the number of physical resource blocks PRB of a physical uplink shared channel PUSCH scheduled by a user equipment UE and a bandwidth of an uplink active bandwidth part BWP where the UE is located.

At S1002, a PUSCH is received.

The specific manner of determining the starting position number of PUSCH frequency hopping on the base station side is similar to that described above for the UE side, and is not described here again.

Fig. 11 shows a flow diagram of an exemplary method 1100 of uplink transmission according to an embodiment of the invention. The method 1100 may be implemented at the UE side.

As shown in fig. 11, in a method 1100, at S1101, a starting position number of physical uplink shared channel, PUSCH, frequency hopping is determined. In S1102, when the number of starting positions of PUSCH hopping is equal to or greater than 2, the order of the starting positions of PUSCH hopping is determined according to the order of offsets between the starting positions of PUSCH hopping from large to small. At S1103, the PUSCH is transmitted.

Fig. 12 shows a flow diagram of an exemplary method 1200 of uplink transmission according to an embodiment of the invention. The method 1200 may be implemented at the base station side.

As shown in fig. 12, in the method 1200, at S1201, the number of start positions for physical uplink shared channel, PUSCH, frequency hopping is determined. In S1202, when the number of starting positions of PUSCH hopping is equal to or greater than 2, the order of the starting positions of PUSCH hopping is determined according to the order of offsets between the starting positions of PUSCH hopping from large to small. At S1203, the PUSCH is received.

Fig. 13 shows a flow diagram of an exemplary method 1300 of uplink transmission according to an embodiment of the invention. The method 1300 may be implemented at the UE side.

As shown in fig. 13, in the method 1300, at S1301, the number of start positions of physical uplink shared channel, PUSCH, frequency hopping is determined. At S1302, when the number of starting positions of PUSCH hopping is equal to or greater than 2, the order of the starting positions of DBPG hopping is determined based on the number of orthogonal frequency division multiplexing OFDM symbols contained in the demodulation reference signal DMRS bundling PUSCH group DBPG. In S1303, the PUSCH is transmitted.

Fig. 14 shows a flowchart of an exemplary method 1400 of uplink transmission according to an embodiment of the invention. The method 1400 may be implemented at the base station side.

As shown in fig. 14, in the method 1400, at S1401, a starting position number of physical uplink shared channel, PUSCH, frequency hopping is determined. At S1402, when the number of starting positions of PUSCH hopping is equal to or greater than 2, the order of the starting positions of DBPG hopping is determined based on the number of orthogonal frequency division multiplexing OFDM symbols contained in the demodulation reference signal DMRS bundling PUSCH group DBPG. At S1403, the PUSCH is received.

Fig. 15 shows a flow diagram of an exemplary method 1500 of uplink transmission according to an embodiment of the invention. The method 1500 may be implemented at the UE side.

As shown in fig. 15, in a method 1500, at S1501, an indication is received to transmit aperiodic channel state information, CSI, on a physical uplink shared channel, PUSCH. At S1502, aperiodic CSI is transmitted on a PUSCH, wherein a priority of the PUSCH and a priority of the aperiodic CSI are the same or different.

According to the embodiment of the present invention, there are a high priority Physical Uplink Shared Channel (PUSCH) and a low priority PUSCH, the high priority PUSCH is referred to as a first priority PUSCH, and the low priority PUSCH is referred to as a second priority PUSCH. Channel State Information (CSI) may also be divided into high-priority CSI, referred to as first-priority CSI, and low-priority CSI, referred to as second-priority CSI.

The aperiodic CSI may be driven by a CSI Request (CSI Request) field in the DCI for scheduling the PUSCH, and the priority of the aperiodic CSI may be determined according to the priority of the PUSCH for transmitting the aperiodic CSI, that is, if the priority of the PUSCH for transmitting the aperiodic CSI is a first priority PUSCH, the aperiodic CSI is a first priority CSI, and if the priority of the PUSCH for transmitting the aperiodic CSI is a second priority PUSCH, the aperiodic CSI is a second priority CSI. By adopting the method, the driving of the aperiodic CSI with different priorities is not flexible, and possibly, the base station cannot obtain the aperiodic CSI with the required priority in time.

According to the embodiment of the present invention, the DCI for scheduling the PUSCH may be introduced to drive the aperiodic CSI with a priority different from the priority of the PUSCH for transmitting the PUSCH, for example, the PUSCH for transmitting the aperiodic CSI has a priority of the second priority PUSCH and may drive the aperiodic CSI with the first priority, or the PUSCH for transmitting the aperiodic CSI has a priority of the first priority PUSCH and may drive the aperiodic CSI with the second priority. The following is a detailed description.

Eighth implementation mode

In an eighth implementation, the priority of the driven aperiodic CSI may be indicated by including a bit in the DCI scheduling the PUSCH.

For example, a field indicating the priority of the driven aperiodic CSI in the DCI scheduling the PUSCH is n bits, where n is a natural number, and for example, n is 1(1 bit is an example and may be extended to 2 bits, 3 bits, and the like). When the field value is "0", the driven aperiodic CSI is aperiodic CSI of a first priority, and when the field value is "1", the driven aperiodic CSI is aperiodic CSI of a second priority.

Or, a field indicating a priority of the driven aperiodic CSI is 2 bits, the driven aperiodic CSI is aperiodic CSI of a first priority when the field value is "00", the driven aperiodic CSI is aperiodic CSI of a second priority when the field value is "01", the driven aperiodic CSI is aperiodic CSI of the first priority and aperiodic CSI of the second priority when the field value is "10", and the field is reserved when the field value is "11".

The method has the advantage that the base station can flexibly select the aperiodic CSI with the required priority.

Ninth implementation manner

In a ninth implementation, the priority of DCI driven aperiodic CSI may be indicated by implicit signaling. For example, a correspondence is set between the priority of aperiodic CSI to be transmitted and the value of CSI request information, and the implicit signaling may be the value of CSI request information in DCI scheduling PUSCH, as indicated by the following fields.

Format (Format)0_1

CSI request-0, 1,2,3,4,5, or 6 bits, and the bit number is determined according to the parameter reportTriggerSize configured by the higher layer signaling.

The priority of the DCI-driven aperiodic CSI may be determined by CSI request information, for example, assuming that the CSI request has 2 bits, the correspondence between CSI request information values and CSI report configurations and the priority of the driven aperiodic CSI is shown in table 4. Alternatively, the correspondence relationship between the CSI request information value and the CSI report configuration and the priority of the driven aperiodic CSI is as shown in table 5.

Table 4: corresponding relation between CSI request information value and CSI report configuration and priority of aperiodic CSI

In another example, the correspondence relationship between the CSI request information value and the CSI reporting configuration and the priority of the driven aperiodic CSI may be as shown in table 5, where the aperiodic CSI priority configuration 1 of the high layer signaling configuration, the aperiodic CSI priority configuration 2 of the high layer signaling configuration, and the aperiodic CSI priority configuration 3 of the high layer signaling configuration may include only aperiodic CSI of the first priority, may include only aperiodic CSI of the second priority, or may include aperiodic CSI of the first priority and aperiodic CSI of the second priority.

Table 5: corresponding relation between CSI request information value and CSI report configuration and priority of aperiodic CSI

The method has the advantages that the base station can flexibly select the aperiodic CSI with the required priority and does not need additional physical layer signaling overhead.

Fig. 16 shows a flow diagram of an exemplary method 1600 for transmitting HARQ-ACKs in accordance with an embodiment of the invention. The method 1600 may be implemented at the UE side.

As shown in fig. 16, in method 1600, at S1601, the UE determines the total number of bits of hybrid automatic repeat request acknowledgement, HARQ-ACK, information. At S1602, the UE transmits HARQ-ACK information having the determined total number of bits on PUCCH resources.

According to the present embodiment, in S1601, the total number of bits of HARQ-ACK information transmitted by the UE may be semi-statically determined. Further, in S1602, the UE determining the number of bits of the hybrid automatic repeat request acknowledgement HARQ-ACK information may include: and the UE receives the configuration information of the bit number of the HARQ-ACK information, and determines the bit number of the HARQ-ACK information according to the configuration information, wherein the configuration information is semi-static configuration information.

That is, the UE configures a pdsch-HARQ-ACK-Codebook, and at this time, the UE may be considered to be configured with a Type 1(Type-1) HARQ-ACK Codebook.

If there is a counting DL Downlink Assignment Index (DAI) field in DCI of a PDCCH scheduling a PDSCH (e.g., DCI format 1_0), the bit number of HARQ-ACK information of the UE may be semi-statically determined (Type-1HARQ-ACK codebook) according to a higher layer signaling configuration.

For example, the UE is configured with m serving cells, and the bundling window of each serving cell is s (the bundling window of each serving cell may also be different, and here, the bundling window is the same as an example), that is, HARQ-ACK feedback information of s downlink timeslots of each serving cell is transmitted in one uplink timeslot, that is, a set of all downlink timeslots that need or may need to feedback HARQ-ACK information in one uplink time unit n, for example, a subframe and/or a timeslot, includes m × s downlink timeslots of m serving cells. The number of bits of each HARQ-ACK information in each downlink slot of each serving cell is d, and the total number of bits q of HARQ-ACK information transmitted in the PUCCH of one uplink slot is m × s × d bits, which is shown in the following equation (1):

total number of bits of HARQ-ACK information to be transmitted (number of serving cells) bundling window per cell bit of HARQ-ACK information … … … … … … … … … … … … … equation (1)

Assuming that m is 4, s is 4, and d is 1, q is m, s, d is 4, 1, 16, and m, s, and d are all natural numbers.

In one case, the UE receives configuration information of the number of bits of the HARQ-ACK information and receives the DAI, and the total number of bits q of the HARQ-ACK information to be transmitted may be determined according to the counting DL DAI. Specifically, in the m-4 serving cells, if the UE confirms that the base station transmits the PDSCH or the PDCCH indicating the Semi-Persistent Scheduling (SPS) release only in one downlink slot of the primary serving cell, for example, when the UE receives only the PDCCH-scheduled PDSCH whose count DL DAI is equal to 1, the UE feeds back only HARQ-ACK information for the PDSCH or the PDCCH indicating the SPS release, and determines the number q of bits of the HARQ-ACK information for the PDSCH or the PDCCH indicating the SPS release according to the transmission mode of the serving cell. For example, when the transmission mode of the serving cell supports one transport block transmission, q is 1, and when the transmission mode of the serving cell supports two transport block transmissions, q is 2.

In other cases, the number of bits of the HARQ-ACK information to be transmitted is determined according to equation (1) above, i.e., 16.

According to the embodiment of the invention, the number of bits of the HARQ-ACK information to be transmitted can be further determined by considering the PDSCH configured by the UE.

The UE may be configured to receive two types of PDSCH, referred to as a first type PDSCH and a second type PDSCH, for example, the first type PDSCH may be a unicast PDSCH scheduled by DCI with a C-RNTI scrambled CRC, and the second type PDSCH may be a multicast PDSCH scheduled by DCI with a G-RNTI scrambled CRC, with the DAIs in the DCI scheduling the two types of PDSCH being counted separately. At this time, the UE may simultaneously receive DAI1 in DCI scheduling a first type of PDSCH and DAI2 in DCI scheduling a second type of PDSCH, and a case where DAI1 is equal to 1 and DAI2 is equal to 1 may occur.

For the first type PDSCH and the second type PDSCH, the UE may configure two corresponding sets of PUCCH resources or only configure one set of PUCCH resources.

Transmitting HARQ-ACK information when UE configures two sets of PUCCH resources

When the UE configures two sets of PUCCH resources, one set of PUCCH resources is configured for transmitting HARQ-ACK of a first type of PDSCH and is called a first set of PUCCH resources, and the other set of PUCCH resources is configured for transmitting HARQ-ACK of a second type of PDSCH and is called a second set of PUCCH resources. There may be the following four methods of determining the total number of bits of HARQ-ACK information to be transmitted.

Method 1

When the UE receives only one first type PDSCH (e.g., the UE receives the PDSCH in the primary cell), and DAI1 in DCI1 scheduling the PDSCH (e.g., the DCI is DCI format 1-0) is equal to 1, the UE feeds back only HARQ-ACK information for the PDSCH on the first set of PUCCH resources. The total number of bits of the HARQ-ACK information to be transmitted may be determined according to a transmission mode of the serving cell.

When the UE receives only one second type PDSCH (e.g., the UE receives the PDSCH in the primary cell) and DAI2 in DCI2 scheduling the PDSCH (e.g., the DCI is DCI format 1-0) is equal to 1, the UE feeds back only HARQ-ACK for the PDSCH on the second set of PUCCH resources. The total number of bits of the HARQ-ACK information to be transmitted may be determined according to a transmission mode of the serving cell.

When the UE receives more than one PDSCH, or receives the PDSCH and the DAI in the DCI scheduling the PDSCH is not equal to 1, or receives the PDSCH and the DCI scheduling the PDSCH has no DAI indication, the total number of bits of HARQ-ACK information to be fed back by the UE is determined according to the above equation (1).

By adopting the method, the PUCCH resources can be saved when the UE only receives one PDSCH and the DAI in the DCI for scheduling the PDSCH is equal to 1.

Method two

When the UE receives only one first type PDSCH (e.g., the UE receives the PDSCH in the primary cell), and DAI1 in DCI1 scheduling the PDSCH (e.g., the DCI is DCI format 1-0) is equal to 1, the UE feeds back only HARQ-ACK for the PDSCH on the first set of PUCCH resources. The total number of bits of the HARQ-ACK information to be transmitted may be determined according to a transmission mode of the serving cell.

When the UE receives only one second type PDSCH (e.g., the UE receives the PDSCH in the primary cell) and DAI2 in DCI2 scheduling the PDSCH (e.g., the DCI is DCI format 1-0) is equal to 1, or when the UE receives more than one PDSCH, or the PDSCH is received and the DAI in DCI scheduling the PDSCH is not equal to 1, or the PDSCH is received and there is no DAI indication in DCI scheduling the PDSCH, the total number of bits of HARQ-ACK information to be fed back by the UE is determined according to equation (1) above.

By adopting the method, the PUCCH resources can be saved when the UE only receives one first type PDSCH and the DAI in the DCI for scheduling the PDSCH is equal to 1.

Method III

When the UE receives only one first type PDSCH (e.g., the UE receives the PDSCH in the primary cell), and DAI1 in DCI1 scheduling the PDSCH (e.g., the DCI is DCI format 1-0) is equal to 1, or when the UE receives more than one PDSCH, or the UE receives the PDSCH and the DAI in DCI scheduling the PDSCH is not equal to 1, or the UE receives the PDSCH and there is no DAI indication in DCI scheduling the PDSCH, the total number of bits of HARQ-ACK information to be fed back by the UE is determined according to equation (1) above.

By adopting the method, the PUCCH resources can be saved when the UE only receives one second type PDSCH and the DAI in the DCI for scheduling the PDSCH is equal to 1.

Method IV

When the UE receives only one first type PDSCH or only one second type PDSCH (e.g., the UE receives the PDSCH in the primary cell) and the DAI in the DCI scheduling the PDSCH (e.g., the DCI format is DCI format 1-0) is equal to 1, or when the UE receives more than one PDSCH, or receives the PDSCH and the DAI in the DCI scheduling the PDSCH is not equal to 1, or receives the PDSCH and there is no DAI indication in the DCI scheduling the PDSCH, the total number of bits of HARQ-ACK information to be fed back by the UE is determined according to equation (1) above.

Several methods for determining the number of bits of the HARQ-ACK information are listed above, and the UE may also determine a method for determining the number of bits of the HARQ-ACK information from among the above listed methods according to the received higher layer signaling configuration.

Transmitting HARQ-ACK information when a UE configures a set of PUCCH resources

When the UE configures a set of PUCCH resources, the set of PUCCH resources is configured to transmit HARQ-ACK information of a first type of PDSCH and HARQ-ACK information of a second type of PDSCH. There may be the following three methods of determining the total number of bits of HARQ-ACK information to be transmitted.

Method 1

When the UE receives only one first type PDSCH (e.g., the UE receives the PDSCH in the primary cell), and DAI1 in DCI1 scheduling the PDSCH (e.g., the DCI is DCI format 1-0) is equal to 1, the UE feeds back only HARQ-ACK information for the PDSCH on the PUCCH resources. The total number of bits of the HARQ-ACK information to be transmitted may be determined according to a transmission mode of the serving cell.

By adopting the method, the PUCCH resources can be saved when the UE receives only one first type PDSCH and the DAI in the DCI for scheduling the PDSCH is equal to 1, and in addition, the understanding of the HARQ-ACK information by the UE and the base station on the first type PDSCH or the second type PDSCH is not confused by adopting the method.

Method two

When the UE receives only one second type PDSCH (e.g., the UE receives the PDSCH in the primary cell), and DAI2 in DCI2 scheduling the PDSCH (e.g., the DCI is DCI format 1-0) is equal to 1, the UE feeds back only HARQ-ACK information for the PDSCH on the PUCCH resources. The total number of bits of the HARQ-ACK information to be transmitted may be determined according to a transmission mode of the serving cell.

Method III

Fig. 17 shows a flow diagram of an exemplary method 1700 for receiving HARQ-ACKs in accordance with an embodiment of the invention. The method 1700 may be implemented on the base station side.

As shown in fig. 17, in S1701, downlink control information DCI is transmitted. In S1702, hybrid automatic repeat request acknowledgement (HARQ-ACK) information is received from a UE, wherein a total number of bits of the HARQ-ACK information is semi-statically determined by the UE.

The following describes a transmission method of HARQ-ACK for multicast PDSCH.

Fig. 18 shows a diagram of an example of UE feedback HARQ-ACK.

The multicast PDSCH is scheduled by Downlink Control Information (DCI) in a Common Search Space (CSS) and received by at least two UEs. As shown in fig. 18, different UEs may feed back respective HARQ-ACKs using different PUCCH resources, and the UE feeds back an ACK if the UE correctly decodes the PDSCH, and feeds back a NACK if the UE does not correctly decode the PDSCH.

Fig. 19 shows a diagram of another example of UE feedback HARQ-ACK.

Alternatively, different UEs may also use the same PUCCH resource for feeding back HARQ-ACK, and if the UE correctly decodes the PDSCH, the UE does not feed back HARQ-ACK information, whereas if the UE receives the PDCCH but does not correctly decode the PDSCH, the UE feeds back NACK on the PUCCH resource. The PUCCH resource is common to multicast UEs, and all the multicast UEs feed back HARQ-ACK on the common PUCCH resource, as shown in fig. 19.

When different UEs feed back respective HARQ-ACKs using different PUCCH resources or different UEs feed back respective HARQ-ACKs using the same PUCCH resource, various methods according to embodiments of the present invention may be used to determine a PUCCH resource, a Transmission Power Control (TPC) command of the PUCCH, and a Downlink Assignment Index (DAI) used by each UE to transmit HARQ-ACK of a multicast PDSCH, or at least one of the above methods may be selected through higher layer signaling configuration.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Tenth mode of implementation

According to the tenth implementation manner of the embodiment of the invention, the PUCCH resources for transmitting the HARQ-ACK of the multicast PDSCH can be determined.

Fig. 20 shows a schematic flow diagram of a method 2000 for transmitting hybrid automatic repeat request acknowledgement, HARQ-ACK, information according to an embodiment of the present invention. The method 2000 may be performed at a User Equipment (UE) side.

As shown in fig. 20, in step S2010 of the method 2000, downlink control information DCI is received, the DCI including a PUCCH resource indication indicating a physical uplink control channel PUCCH resource for indicating at least one user equipment UE to transmit HARQ-ACK information.

In step S2020, a physical uplink control channel PUCCH resource for transmitting HARQ-ACK information is determined according to the PUCCH resource indication.

In step S2030, HARQ-ACK information is transmitted on the determined PUCCH resource. Therefore, according to the embodiment of the invention, on the premise of saving PDSCH and PDCCH in the multicast technology, reasonable power is utilized to accurately transmit the HARQ-ACK feedback information of the multicast PDSCH by using as few PUCCH resources as possible.

Hereinafter, various examples of a tenth implementation according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Example 10.1

The PUCCH Resource may be indicated by a PUCCH Resource Indication in DCI scheduling the multicast PDSCH, for example, indicated by a field in the DCI, which may be referred to as a Resource Indication field, for example, a PRI (PUCCH Resource Indication) field, which may indicate one PUCCH Resource set of a plurality of PUCCH Resource sets configured by higher layer signaling, and N _ i (N _ i is a positive integer) PUCCH resources are contained in each PUCCH Resource set, i is an index of the PUCCH Resource set. A plurality of (i.e., N _ i) PUCCH resources within each PUCCH resource set may be respectively used for at least one UE.

That is, PUCCH candidate resources and/or resource sets are determined by a higher layer signaling configuration, and a physical uplink control channel PUCCH resource for transmitting HARQ-ACK information is determined from the PUCCH candidate resources and/or resource sets according to the PUCCH resource indication, e.g., PRI field.

For example, the PRI may be 2 bits and may indicate a total of 4 PUCCH resource sets, as shown in table 1. The advantage of using this method is that the UE can allocate PUCCH resources for transmitting HARQ-ACK of multicast PDSCH to each UE with less physical layer information bits. The PRI of 2 bits is only an example, and those skilled in the art can understand that the PRI may include fewer or more bits to indicate fewer or more PUCCH resource sets.

Table 6: correspondence between PRI values and PUCCH resource sets

In an example, the number of PUCCH resources in each PUCCH resource set may be the same, and in this case, all N _ i are the same, for example, N. In the case of table 1, for example, N _1 — N _2 — N _3 — N _4 — N may be used. The UE may obtain the value of N by receiving a higher layer signaling configuration.

In another example, the number of PUCCH resources in each PUCCH resource set may be different, and the UE may obtain the value of the number N _ i of PUCCH resources in PUCCH resource set i by receiving a higher layer signaling configuration.

According to the embodiment of the invention, each UE in at least one UE feeds back HARQ-ACK by using one PUCCH resource in the indicated PUCCH resource set, and the PUCCH resource used by each UE can be obtained according to the corresponding relation between the index of the UE and the PUCCH resource index in the PUCCH resource set, or can be obtained by receiving high-level signaling configuration.

Example 10.2

Alternatively, the PUCCH resources may be indicated by M PRI fields in DCI of the multicast-scheduled PDSCH, M being a positive integer, each PRI field being used to indicate a PUCCH resource used by a corresponding UE of the at least one UE to transmit HARQ-ACK information, respectively. That is, each PRI field indicates one PUCCH resource among a plurality of PUCCH resources configured for higher layer signaling, and each UE transmits HARQ-ACK using the indicated PUCCH resource, respectively.

The UE may obtain the M value by receiving a higher layer signaling configuration, and the UE may also obtain an index of a PRI field indicating a PUCCH resource for transmitting HARQ-ACK by the UE by receiving the higher layer signaling configuration, for example, the PRI with the field index M is a PRI field indicating a PUCCH resource for transmitting HARQ-ACK of a multicast PDSCH by the UE with the UE index UE-M.

For example, each PRI may be 2 bits and may indicate a total of 4 PUCCH resources, as shown in table 2. The benefit of using this approach is that PUCCH resources can be flexibly indicated independently for each UE through multiple PRI fields. Also, the 2-bit PRI is just an example, and those skilled in the art will appreciate that the PRI may include fewer or more bits to indicate fewer or more PUCCH resource sets.

Table 7: correspondence between PRI values and PUCCH resources

Example 10.3

Alternatively, as shown in table 8, the indicated PUCCH resources may include an option that a portion of the at least one UE does not need to transmit HARQ-ACK.

The method has the advantages that if the UE does not need to feed back the HARQ-ACK, the UE can be instructed not to feed back the HARQ-ACK through the option of not transmitting the HARQ-ACK, so that PUCCH resources can be saved, and meanwhile, the power of the UE is saved. Also, 2 bits per PRI is merely an example, and those skilled in the art will appreciate that a PRI may include fewer or more bits to indicate fewer or more PUCCH resource sets.

Table 8: correspondence between PRI values and PUCCH resources

PRI value	PUCCH resources
		00	No need to transmit HARQ-ACK
01	PUCCH resource one of high-level signaling configuration
		10	PUCCH resource two configured by high-level signaling
11	PUCCH resource three configured by high-level signaling

Example 10.4

Alternatively, the PUCCH resources may be indicated by M PRI fields in DCI scheduling the multicast PDSCH, M being a positive integer, and each PRI field is used to indicate a set of PUCCH resources for transmitting HARQ-ACK information for a corresponding UE group of the at least one UE, respectively. That is, each PRI field indicates one PUCCH resource set of a plurality of PUCCH resource sets of a higher layer signaling configuration, as shown in table 9, and the UE obtains a PRI field index indicating a PUCCH resource set for transmission of HARQ-ACK by receiving the higher layer signaling configuration. For example, the PRI with the field index m is a PRI field of a PUCCH resource set indicating that a UE group where the UE with the UE index m is located transmits HARQ-ACK, each UE in the UE group feeds back HARQ-ACK by using one PUCCH resource in the indicated PUCCH resource set, and the PUCCH resource used by each UE may be obtained according to a correspondence between the index of the UE and the PUCCH resource index in the PUCCH resource set, or may be obtained by receiving higher layer signaling configuration.

Different PRI fields are for different UE groups, and the UE obtains the value of M by receiving high-level signaling configuration. By adopting the method, information bits in the DCI can be saved, and PUCCH resources can be flexibly and independently indicated for each group of UE. Also, the 2-bit PRI is just an example, and those skilled in the art will appreciate that the PRI may include fewer or more bits to indicate fewer or more PUCCH resource sets.

Table 9: correspondence between PRI values and PUCCH resource sets

PRI value	PUCCH resource set
		00	PUCCH resource set unification of high-level signaling configuration
01	PUCCH resource set two configured by high-level signaling
		10	PUCCH resource set III configured by high-level signaling
11	PUCCH resource set four configured by high-level signaling

Example 10.5

Alternatively, the indicated PUCCH resource set may include an option that a partial UE group of the at least one UE does not need to transmit HARQ-ACKs, as shown in table 10.

The advantage of adopting this method is that if all the UEs in the group do not need to feed back HARQ-ACK, the group of UEs can be instructed not to feed back HARQ-ACK by the option that HARQ-ACK does not need to be transmitted, which can save PUCCH resources and also save power of the UEs. Also, the 2-bit PRI is just an example, and those skilled in the art will appreciate that the PRI may include fewer or more bits to indicate fewer or more PUCCH resource sets.

Table 10: correspondence between PRI values and PUCCH resource sets

PRI value	PUCCH resource set
		00	No need to transmit HARQ-ACK
01	PUCCH resource set unification of high-level signaling configuration
		10	PUCCH resource set two configured by high-level signaling
11	PUCCH resource set III configured by high-level signaling

In one example, for the PUCCH resource indicated by the PRI in the DCI scheduling the multicast PDSCH, a newly added field, a reinterpretation of other fields, and a reserved field in the DCI may also be used as an enable/disable field for enabling or disabling the PUCCH resource indicated by the PRI.

The enable/disable field may be indicated in a bitmap method, and the number of bits E of the enable/disable field is configured by higher layer signaling. Each of the E bits for enabling/disabling the PUCCH resource or PUCCH resource set may be configured by higher layer signaling, for example, when a bit value of one bit in the enabling/disabling field is "0", the PUCCH resource or PUCCH resource set indicated by the bit does not transmit HARQ-ACK, and when the bit value is "1", the PUCCH resource or PUCCH resource set indicated by the bit transmits HARQ-ACK, or vice versa. The advantage of using this method is that if the UE or all UEs in the group of UEs do not need to feed back HARQ-ACK, the UE or the group of UEs can be instructed not to feed back HARQ-ACK through the enable/disable field, which can save PUCCH resources while saving power of the UE.

Example 10.6

Fig. 21 illustrates a schematic diagram of an example in which DCI is divided into 2 parts according to an embodiment of the present invention.

As mentioned above, the resource indication field of the PUCCH resource may be located on downlink control signaling (DCI) in the multicast PDSCH resource, and according to the embodiment of the present invention, the DCI scheduling the multicast PDSCH may be divided into 2 parts: a part of DCI is transmitted in the PDCCH, referred to as a first part DCI; and another part of the DCI is transmitted in the PDCCH-scheduled multicast PDSCH, referred to as a second part of the DCI, the PUCCH resource indication field may be included in the second part of the DCI.

The method has the advantages that the DCI is divided into two parts, the bit number of the DCI of the first part can be the same as that of the DCI for scheduling the unicast PDSCH, so that the number of DCIs with different sizes for PDCCH blind detection is not increased under the condition that the UE supports multicast and unicast simultaneously, and the PUCCH resources can be indicated in the DCI of the second part more flexibly.

A PUCCH resource indication field, e.g. a PRI field, included in the second part of DCI may indicate PUCCH resources for transmission of HARQ-ACK in one of the methods, e.g. the aforementioned examples 10.1 to 10.5.

In one example, the PUCCH resource may be indicated by one PRI field in the second partial DCI, the field may indicate one PUCCH resource set of a plurality of PUCCH resource sets configured by higher layer signaling, and N _ i (N _ i is a positive integer) PUCCH resources are contained within each PUCCH resource set, i is an index of the PUCCH resource set. A plurality of (i.e., N _ i) PUCCH resources within each PUCCH resource set may be respectively used for at least one UE, as shown in table 1. Each UE in the at least one UE feeds back the HARQ-ACK by using one PUCCH resource in the indicated PUCCH resource set, and the PUCCH resource used by each UE can be obtained according to the corresponding relation between the index of the UE and the PUCCH resource index in the PUCCH resource set, or can be obtained by receiving high-layer signaling configuration.

In one example, PUCCH resources may be indicated by M PRI fields in the second partial DCI, where M is a positive integer. Each PRI field indicates one PUCCH resource in a plurality of PUCCH resources configured by high-layer signaling, and the UE obtains the PRI field of the PUCCH resource for indicating the UE to transmit HARQ-ACK by receiving the high-layer signaling configuration, for example, the PRI field of the PUCCH resource for indicating the UE with the UE index of UE-m to transmit HARQ-ACK is the PRI field of the PUCCH resource for indicating the UE with the UE index of UE-m to transmit HARQ-ACK. The UE transmits HARQ-ACK using the indicated PUCCH resources as shown in table 2. And the UE obtains the M value by receiving the high-level signaling configuration.

In one example, as shown in table 8, the indicated PUCCH resource set may include an option that no HARQ-ACK transmission is required, since the UE does not need to feed back HARQ-ACK at this time, which may save PUCCH resources.

In one example, PUCCH resources may be indicated by M PRI fields in the second partial DCI, where M is a positive integer. Each PRI field indicates one PUCCH resource set among a plurality of PUCCH resource sets of a higher layer signaling configuration, as shown in table 4. The UE obtains a PRI field of a PUCCH resource set indicating that the UE transmits HARQ-ACK by receiving a higher layer signaling configuration, for example, the field PRI-m is a PRI field of a PUCCH resource set indicating that a UE group to which the UE with a UE index of UE-m belongs is used for transmitting HARQ-ACK, each UE in the UE group feeds back HARQ-ACK by using one PUCCH resource in the indicated PUCCH resource set, and the PUCCH resource used by each UE is obtained according to a correspondence relationship between the index of the UE and the PUCCH resource index in the PUCCH resource set. Different PRI fields are for different UE groups, and the UE can obtain the M value by receiving high-layer signaling configuration.

In one example, as shown in table 10, the indicated PUCCH resource set may include an option that no HARQ-ACK transmission is required, since the group of UEs need not feed back HARQ-ACKs at this time, which may save PUCCH resources.

In one example, the newly added fields, the reinterpreted other fields, and the reserved fields may be utilized in the first portion of DCI to enable/disable the PRI field in the second portion of DCI. As described above, the enable/disable field may be indicated by using a bitmap method, the bit number E _1 of the enable/disable field is configured by higher layer signaling or preset by a protocol, and each of the E _1 bits is used to enable/disable M _5(M _5 is configured by higher layer signaling, and M _5 is a positive integer) PRI fields.

For example, when the bit value of one bit of the enable/disable field is "0", the corresponding M _5 PRI fields are not included in the second part of DCI, where the UE indicated by the PRI field for PUCCH resources does not transmit HARQ-ACK, and the number of bits of the second part of DCI does not include the bits occupied by the M _5 PRI fields. When the bit value is "1", the corresponding M _5 PRI fields are included in the second part of DCI, where the UE indicating PUCCH resources by the PRI fields transmits HARQ-ACK, and the bit number of the second part of DCI includes bits occupied by the M _5 PRI fields. By adopting the method, resources occupied by the second part of DCI can be saved, and PUCCH resources can be saved.

Eleventh implementation manner

The transmission method of the TPC command of the PUCCH for transmitting the HARQ-ACK of the multicast-scheduled PDSCH according to the embodiment of the present invention will be described in detail below.

Example 11.1

In order to allow more UEs to obtain power control, the TPC command in the DCI may be used for different UEs in different time units. According to the embodiment of the present invention, whether to apply the TPC command may be determined according to a time unit in which the DCI is located.

For example, in slot n, the TPC command field is for a UE with UE-index UE-m, and in slot n + k, the TPC command field is for a UE with UE-index UE-p. According to the embodiment of the present invention, a specific example implementation method may be: assuming that the time unit of DCI is L, L mod Q is S, which is the index of the UE whose TPC command field is used for power control, where Q is a positive integer and is configured by higher layer signaling, and mod is a modulo operation.

For example, assume that Q is 5, the index of UE-1 is 1 and the index of UE-2 is 2. When L is 6, L mod 5 is 1, the TPC command field of the time unit is used for power control of UE-1, and when L is 7, L mod 5 is 2, the TPC command field of the time unit is used for power control of UE-2.

Alternatively, the TPC command field is only used for the UE determining the index, e.g., in the used time unit, the TPC command field in DCI is used for UE-1.

The method has the advantage that the UE as many as possible can obtain the TPC commands for power adjustment under the condition of not increasing the bit number of the TPC commands.

Example 11.2

F TPC command fields exist in the DCI of the scheduling multicast PDSCH, each TPC command field is used for power control of a PUCCH of one UE or one UE group for transmitting HARQ-ACK of the multicast PDSCH, and F is a positive integer.

The UE obtains the F value by receiving the high-level signaling configuration, and the UE obtains the TPC command field of the PUCCH used for transmitting the HARQ-ACK by the UE by receiving the high-level signaling configuration, for example, the field TPC-m is the TPC command field of the PUCCH used for transmitting the HARQ-ACK by the UE-m. The benefit of using this approach is that each UE can utilize TPC commands for power adjustment in a timely manner.

Example 11.3

The TPC command field for power control of PUCCH for transmitting HARQ-ACK of multicast PDSCH is located in downlink control signaling (DCI) in PDSCH resources, and at this time, DCI scheduling multicast PDSCH may be divided into 2 parts: a part of DCI is transmitted in the PDCCH, referred to as a first part DCI; the other part of DCI is transmitted in the multicast PDSCH scheduled by PDCCH, referred to as the second part of DCI, as shown in fig. 21.

The TPC command field is included in the second part DCI, and may be transmitted with reference to one of examples 11.1 and 11.2.

For example, according to the method in example 11.2, the TPC command field includes F _1 TPC command fields, F _1 is a positive integer, and each TPC field is used for power control of one UE and/or one UE group, the UE obtains the TPC command field of the PUCCH for transmitting HARQ-ACK by the UE by receiving a higher layer signaling configuration, for example, the field TPC-m is the TPC command field of the PUCCH for transmitting HARQ-ACK by the UE-m, the UE performs power control on the PUCCH for transmitting HARQ-ACK by using the TPC command field, and the UE obtains the F _1 value by receiving the higher layer signaling configuration.

The method has the advantages that the DCI is divided into two parts, the bit number of the DCI of the first part can be the same as that of the scheduling unicast DCI, so that the number of DCIs with different sizes of PDCCH blind detection is not increased under the condition that the UE supports multicast and unicast simultaneously, and the TPC command is indicated more flexibly in the DCI of the second part.

In one example, in the first DCI, the TPC command field in the second DCI may be enabled/disabled by using the new field, the reinterpretation field, and the reserved field, the enable/disable field may be indicated by using a bitmap method, the bit number F _2 of the enable/disable field is configured by higher layer signaling, each of the F2 bits is used to enable/disable F3 (F3 is configured by higher layer signaling, F3 is a positive integer) TPC command fields, e.g., when the bit value of one bit in the enable/disable field is "0", the corresponding F _3 TPC command fields are not included in the second part DCI, when the bit value of the bit is "1", the second part of DCI includes corresponding F — 3 TPC command fields, and this method may save resources occupied by the second part of DCI.

In one example, in the first DCI, the added field, the reinterpreted field, and the reserved field may be used to enable/disable the PRI field and the TPC command field in the second DCI separately or together, the enable/disable field may be indicated by using a bitmap method, the bit number F _4 of the enable/disable field is configured by higher layer signaling, and each bit of the F _4 bits of the enable/disable field is used to enable/disable F _5(F _5 is configured by higher layer signaling, and F _5 is a positive integer) PRI fields and F _5 TPC command fields. For example, individual bits in the enable/disable field may be used to indicate the enabling/disabling of the PRI field and the TPC command field, respectively, or may be combined to indicate the enabling/disabling of the PRI field and the TPC command field collectively.

For example, when the bit value is "0", the corresponding F _5 PRI fields and F _5 TPC command fields are not included in the second DCI part, and when the bit value is "1", the corresponding F _5 PRI fields and F _5 TPC command fields are included in the second DCI part.

By adopting the method, resources occupied by the second part of DCI can be saved, PUCCH resources can be saved, and the transmitting power of the UE can be saved.

Example 11.4

There may be no TPC command (TPC command) field in the DCI scheduling the multicast PDSCH, or the TPC command field in the DCI scheduling the multicast PDSCH may be used as a reserved bit or re-interpreted as another field, e.g., used as a PUCCH resource enable/disable field.

In one implementation, the TPC command field is reinterpreted to indicate whether to transmit a HARQ-ACK. Assuming that the UE does not feed back the HARQ-ACK when the bit indication value of the TPC command field or a part of bits in the TPC command field (e.g., one bit in the TPC command field) is a first value (e.g., the first value is 0), and the UE feeds back the HARQ-ACK when the bit indication value of the TPC command field or a part of bits in the TPC command field (e.g., one bit in the TPC command field) is a second value (e.g., the second value is 1).

By adopting the method, whether the HARQ-ACK is transmitted or not can be dynamically indicated according to the requirement, and the resource for transmitting the HARQ-ACK can be saved.

Alternatively, in another implementation, a DCI format indication (Identifier for DCI formats) field in DCI scheduling the multicast PDSCH may be reinterpreted as a PUCCH resource enable/disable field.

In one example, the DCI format indication field is reinterpreted for indicating whether to transmit a HARQ-ACK. Assuming that the UE does not feed back HARQ-ACK when the bit indication value of the DCI format indication field is a first value (e.g., the first value is 0), and feeds back HARQ-ACK when the bit indication value of the DCI format indication field is a second value (e.g., the second value is 1).

Alternatively, in yet another implementation, the value of the downlink data to uplink acknowledgement (DL-DataToUL-ACK), also referred to as the K1 indication, field in the DCI scheduling the multicast PDSCH includes a value indicating that no HARQ-ACK is transmitted for indicating that the UE does not feed back the HARQ-ACK, as shown in table 11.

Table 11: k1 indicates the correspondence between field values and K1 values

K1 indicates a field value	K1 value
		000	Non-transmission HARQ-ACK
001	First K1 value of higher layer signaling configuration
		010	Second K1 value of higher layer signaling configuration
011	Third K1 value of higher layer signaling configuration
		100	Fourth K1 value for higher layer signaling configuration
101	Fifth K1 value for higher layer signaling configuration
		110	Sixth K1 value for higher layer signaling configuration
111	Seventh K1 value for higher layer signaling configuration

Power control of the PUCCH transmitting HARQ-ACK generated by the multicast PDSCH may be performed using TPC commands common to the groups.

Since the reliability required for the HARQ-ACK transmission of the unicast PDSCH and the HARQ-ACK transmission of the multicast PDSCH are different, the parameters for power control of the PUCCH transmitting the HARQ-ACK of the unicast PDSCH and the PUCCH transmitting the HARQ-ACK of the multicast PDSCH may need to be configured independently. The PUCCH transmitting HARQ-ACK of unicast PDSCH and the PUCCH transmitting HARQ-ACK of multicast PDSCH may be distinguished by a format of DCI scheduling PDSCH or by RNTI of scrambled CRC of DCI scheduling PDSCH.

For example, the CRC of a PDCCH scheduling a unicast PDSCH is scrambled by C-RNTI, the CRC of a PDCCH scheduling a multicast PDSCH is scrambled by MBS-RNTI, and the power control parameter comprises an open loop power control parameter P_{0_PUCCH}And the like. As another example, PUCCH for HARQ-ACK transmission of unicast PDSCH employs P _{0_PUCCH}1, the PUCCH for carrying out power control and transmitting HARQ-ACK of the multicast PDSCH adopts

And performing power control.

In addition, one UE may configure a plurality of RNTI for power control common to groups, such as TPC-PUCCH-RNTI-1 for CRC scrambling of DCI for power control command transmission of PUCCH for unicast HARQ-ACK transmission, and TPC-PUCCH-RNTI-2 for CRC scrambling of DCI for power control command transmission of PUCCH for multicast HARQ-ACK transmission, so that TPC command common to groups can be flexibly transmitted.

Twelfth implementation mode

A method of transmitting a Downlink Assignment Indicator (DAI) according to an embodiment of the present invention is described below.

Example 12.1

K _1 DAIs, e.g., DAI fields, are included in the DCI scheduling the multicast PDSCH, each DAI being used for a count of transmission HARQ-ACKs for one UE, K _1 being a positive integer. The UE obtains the value of K _1 by receiving the higher layer signaling configuration, and the UE obtains the DAI of the count used by the UE for transmitting the HARQ-ACK by receiving the higher layer signaling configuration (for example, the DAI field comprises the counter DAI and the total DAI or only comprises the counter DAI), and for example, the field DAI-m is the count used by the UE-m for transmitting the HARQ-ACK. By adopting the method, the base station and the UE can be prevented from wrongly understanding the HARQ-ACK bit number.

Example 12.2

The DAI field is located in downlink control signaling (DCI) in PDSCH resources, and at this time, DCI scheduling multicast PDSCH may be divided into 2 parts: a part of DCI is transmitted in a PDCCH for scheduling a multicast PDSCH and is called as first part of DCI; the other part of DCI is transmitted in the multicast PDSCH scheduled by PDCCH, referred to as the second part of DCI, as shown in fig. 21.

The DAI field is included in the second partial DCI and includes K _2 DAI field indications, K _2 being a positive integer. Each DAI field is used for HARQ-ACK counting of one UE, the UE obtains the DAI field transmitted by the UE by receiving high-layer signaling configuration, for example, the DAI field transmitted by the UE-m is used by the UE for counting HARQ-ACK, and the UE obtains a K _2 value by receiving high-layer signaling configuration.

The method has the advantages that the DCI is divided into two parts, the bit number of the DCI of the first part can be the same as that of the scheduling unicast DCI, so that the number of DCIs with different sizes of PDCCH blind detection is not increased under the condition that the UE supports multicast and unicast simultaneously, and DAI is indicated more flexibly in the DCI of the second part.

In one example, in the first portion of DCI, the newly added field, the reinterpreted other field, and the reserved field may be used to enable/disable the DAI field in the second portion of DCI, the enable/disable field may be indicated by using a bitmap method, the bit number K _3 of the enable/disable field is configured by higher layer signaling, each of the K _3 bits of the enable/disable field is used to enable/disable K _4(K _4 is configured by higher layer signaling, and K _4 is a positive integer) DAI fields, for example, when the bit value is "0", the corresponding K _4 DAI fields are not included in the second portion of DCI, and when the bit value is "1", the corresponding K _4 DAI fields are included in the second portion of DCI, which may save resources occupied by the second portion of DCI.

In one example, in the first DCI, the newly added field, the reinterpreted other fields, and the reserved field may be utilized to enable/disable at least one of the PRI field, the TPC command field, and the DAI field in the second DCI. The enable/disable field may be indicated by using a bitmap method, the bit number K _5 of the enable/disable field is configured by higher layer signaling, and each of the K _5 bits of the enable/disable field is used to enable/disable K _6(K _6 is configured by higher layer signaling, and K _6 is a positive integer) PRI fields and TPC command fields and DAI fields, for example, when the bit value is "0", the second portion of DCI does not include the corresponding K _6 PRI fields and TPC command fields and DAI fields, and when the bit value is "1", the second portion of DCI includes the corresponding K _6 PRI fields and TPC command fields and DAI fields, and this method may save resources occupied by the second portion of DCI.

Example 12.3

There may be no DAI field in DCI scheduling the multicast PDSCH, or the DAI field in DCI scheduling the multicast PDSCH may be used as a reserved bit or re-interpreted as another field, e.g., used as a PUCCH resource enable/disable field.

Thirteenth implementation manner

The following describes a transmission method of HARQ-ACK for multicast PDSCH according to an embodiment of the present invention.

Fig. 22 shows a schematic diagram of a transmission method of HARQ-ACK for multicast PDSCH.

When a multicast PDSCH is scheduled by Downlink Control Information (DCI) in a Common Search Space (CSS) and received by multiple UEs, different UEs may use different PUCCH resources to feed back their HARQ-ACKs, and if the UE decodes the PDSCH correctly, the UE feeds back an ACK, and if the UE does not decode the PDSCH correctly, the UE feeds back a NACK, which may be the case: some UEs receive PDSCH multiple times but cannot decode correctly, so NACK is fed back multiple times, then the base station retransmits the multicast PDSCH multiple times, and some UEs decode correctly when receiving PDSCH for the first time, but feed back ACK multiple times for one PDSCH, as shown in fig. 22.

Fig. 23 illustrates a diagram of a transmission method of HARQ-ACK for a multicast PDSCH according to an embodiment of the present invention.

For multiple retransmissions of the same multicast PDSCH, the UE feeding back ACK to the base station multiple times may occupy more PUCCH resources and consume the power of the UE, and feeding back ACK a certain number of times may enable the base station to reliably receive the ACK.

For example, it may be determined that for multiple retransmissions of the same multicast PDSCH, the number of times that the UE feeds back ACK to the base station is a, where a is a positive integer, and the UE may receive a higher layer signaling configuration or a predetermined number of times by a protocol.

As shown in fig. 23, a is equal to 2, when receiving PDCCHs for scheduling the same multicast PDSCH for the first and second times, the UE1 feeds back an ACK on the corresponding PUCCH resource, respectively, and when receiving a PDCCH for scheduling the same multicast PDSCH for the third time, the UE1 does not feed back an ACK on the corresponding PUCCH resource.

Fourteenth implementation mode

The following describes a HARQ combining method between multiple transmissions and retransmissions of a multicast PDSCH.

Fig. 24 shows a diagram in which different UEs feed back HARQ-ACK information using the same PUCCH resource.

When different UEs feed back HARQ-ACK information using the same PUCCH resource, if the UE correctly decodes the PDSCH, the UE does not feed back HARQ-ACK information, and if the UE receives the PDCCH without correctly decoding the PDSCH, the UE feeds back NACK on the PUCCH resource that is common to the multicast UEs, as shown in fig. 24. However, the missed detection of the PDCCH by the UE causes the base station and the UE to have different understandings of the received multicast PDSCH, so that the UE incorporates the multicast PDSCH with different information.

To prevent merging different information multicast PDSCHs, a time window for multicasting the PDSCHs may be set. In one example, information for a time window for multicasting PDSCH is received, and the multicast PDSCH is received according to the information. Only the multicast PDSCH transmitted in the time window range can be merged, but the multicast PDSCH transmitted in the time window and the multicast PDSCH transmitted outside the time window can not be merged, so that merging of multicast PDSCHs with different information caused by missed detection of PDCCH can be avoided.

The time unit of the time window may be a slot, a subframe, a millisecond, etc., and the UE may obtain the length of the time window by receiving a higher layer signaling configuration.

Fig. 25 shows a schematic diagram of a multicast PDSCH within a time window according to an embodiment of the present invention.

For example, assuming that the time window is B slots, the multicast PDSCHs with the same HARQ process number or HARQ processes within the time window may be combined. As shown in fig. 8, the multicast PDSCH of slot n and the multicast PDSCH of slot n + B-2 are within a time window B, and the multicast PDSCH of slot n + B-2 may be merged.

Fig. 26 shows a schematic diagram of multicast PDSCH within a time window and multicast PDSCH outside the time window according to an embodiment of the present invention.

As shown in fig. 26, the multicast PDSCH of slot n and the multicast PDSCH of slot n-B-2 are not within a time window B, and the multicast PDSCH of slot n-B-2 may not be merged. B is a positive integer, and the UE may obtain the B value by receiving signaling, for example, the UE may obtain the B value by receiving higher layer signaling configuration.

By adopting the method, the UE can be prevented from merging the multicast PDSCH with different information due to the fact that the PDCCH is missed by the UE and the NACK is received by the base station wrongly.

Fig. 27 shows a diagram of a method 2700 for receiving hybrid automatic repeat request acknowledgement, HARQ-ACK, information, according to an embodiment of the invention. The method 2700 may be performed at the base station side.

As shown in fig. 27, in step S2710, downlink control information DCI is transmitted, wherein the DCI includes a PUCCH resource indication indicating a physical uplink control channel PUCCH resource for indicating at least one user equipment UE to transmit HARQ-ACK information.

In step S2720, HARQ-ACK information is received on PUCCH resources.

Therefore, according to the embodiment of the invention, on the premise of saving PDSCH and PDCCH in the multicast technology, reasonable power is utilized to accurately transmit the HARQ-ACK feedback information of the multicast PDSCH by using as few PUCCH resources as possible.

The specific method for receiving HARQ-ACK information at the base station side is similar to the foregoing implementations, and details will not be described here.

In one example, the number of PUCCH resource indications is plural, and each PUCCH resource indication is used to indicate a PUCCH resource used by a corresponding UE of the at least one UE to transmit HARQ-ACK information, respectively.

In one example, the number of PUCCH resource indications is multiple, and each PUCCH resource indication is used to indicate a PUCCH resource set used for transmitting HARQ-ACK information for a corresponding UE group of the at least one UE.

In one example, the PUCCH resource indication includes a PUCCH resource indication PRI field.

In one example, the method 1000 further comprises: and determining the maximum retransmission times aiming at the HARQ-ACK of the same multicast Physical Downlink Shared Channel (PDSCH).

In one example, the method 1000 further comprises: and receiving information of a time window for multicasting the PDSCH, and receiving the multicasting PDSCH according to the information.

Fig. 28 shows a schematic block diagram of a device 2800 for transmitting according to an embodiment of the present invention. The apparatus 2800 may be implemented at the UE side. For example, the device 2800 may be implemented to perform the methods described above with reference to fig. 2, 11, 13, 15, 16, and 20.

As shown in fig. 28, device 2800 may include a transceiver 2801, a processor 2802, and a memory 2803.

The transceiver 2801 transmits and receives signals. The memory 2803 stores instructions executable by the processor 2802 that, when executed by the processor 2802, cause the processor 2802 to perform the methods described previously with reference to fig. 2, 11, 13, 15, 16, and 20.

Fig. 29 shows a schematic block diagram of an apparatus for receiving 2900 according to an embodiment of the present invention. The apparatus 2900 may be implemented on the base station side. For example, the apparatus 2900 may be implemented to perform the methods described previously with reference to fig. 10, 12, 14, 17, and 27.

As shown in fig. 29, a device 2900 can include a transceiver 2901, a processor 2902, and a memory 2903.

The transceiver 2901 sends and receives signals. The memory 2903 stores instructions executable by the processor 2902 which, when executed by the processor 2902, cause the processor 2902 to perform the methods previously described with reference to fig. 10, 12, 14, 17, and 27.

Various embodiments of the present disclosure may be implemented as computer readable code embodied on a computer readable recording medium from a particular perspective. The computer readable recording medium is any data storage device that can store data readable by a computer system. Examples of the computer readable recording medium may include read-only memory (ROM), random-access memory (RAM), compact disc read-only memory (CD-ROM), magnetic tapes, floppy disks, optical data storage devices, carrier waves (e.g., data transmission via the internet), and the like. The computer-readable recording medium can be distributed over network-connected computer systems and thus the computer-readable code can be stored and executed in a distributed fashion. Also, functional programs, codes, and code segments for implementing various embodiments of the present disclosure may be easily construed by those skilled in the art to which the exemplary embodiments of the present disclosure are applied.

It will be understood that example embodiments of the present disclosure may be implemented in hardware, software, or a combination of hardware and software. The software may be stored as program instructions or computer readable code executable on a processor on a non-transitory computer readable medium. Examples of the non-transitory computer readable recording medium include magnetic storage media (e.g., ROM, floppy disks, hard disks, etc.) and optical recording media (e.g., CD-ROMs, Digital Video Disks (DVDs), etc.). The non-transitory computer-readable recording medium can also be distributed over network-coupled computer systems so that the computer-readable code is stored and executed in a distributed fashion. The medium may be read by a computer, stored in a memory, and executed by a processor. The various embodiments may be implemented by a computer or a portable terminal including a controller and a memory, and the memory may be an example of a non-transitory computer-readable recording medium adapted to store program(s) having instructions to implement the example embodiments of the present disclosure. The present disclosure may be realized by a program having codes for embodying the apparatus and method described in the claims, the program being stored in a machine (or computer) readable storage medium. The program may be electronically carried on any medium, such as a communication signal conveyed via a wired or wireless connection, and the disclosure suitably includes equivalents thereof.

Although the present disclosure has been described in connection with some embodiments, it is not intended to be limited to the specific form set forth herein. Rather, the scope of the present disclosure is limited only by the accompanying claims. Furthermore, although a feature may appear to be described in connection with particular embodiments, one skilled in the art will recognize in light of this disclosure that various features of the described embodiments may be combined. In the claims, the term "comprising" does not exclude the presence of other elements or steps.

Furthermore, although individually listed, a plurality of means, elements or method steps may be implemented by e.g. a single unit or processor. Furthermore, although individual features may be included in different claims, these may possibly be advantageously combined, and the inclusion in different claims does not imply that a combination of features is not feasible and/or advantageous. Furthermore, the inclusion of a feature in one category of claims does not imply a limitation to this category but rather indicates that the feature is equally applicable to other claim categories, as appropriate.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of transmission, comprising:

determining a starting position number of PUSCH frequency hopping, wherein the starting position number is determined according to the number of Physical Resource Blocks (PRBs) of a Physical Uplink Shared Channel (PUSCH) scheduled by a User Equipment (UE) and the bandwidth of an uplink active bandwidth part (BWP) where the UE is located; and

and sending the PUSCH.

2. The method of claim 1, wherein determining a starting number of positions for PUSCH frequency hopping comprises:

receiving a starting position number of PUSCH hopping from a base station, the starting position number being determined by the base station according to the number of PRBs of a PUSCH scheduled by a UE and a bandwidth of an uplink active BWP in which the UE is located.

3. The method of claim 1, wherein determining a starting number of positions for PUSCH frequency hopping comprises:

receiving the bandwidth of uplink activated BWP (broadband access point) sent by a base station and where the UE is located;

receiving indication information sent by a base station; and

and determining the starting position number of the PUSCH frequency hopping from a plurality of candidate starting position number configurations of the PUSCH frequency hopping according to the bandwidth and the indication information.

4. The method of claim 3, wherein the indication information is determined by the base station according to a number of PRBs of a PUSCH scheduled by the UE.

5. The method according to claim 3 or 4, wherein, of the plurality of candidate starting position number configurations, one or more candidate starting position number configurations correspond to the same bandwidth of uplink active BWP.

6. The method of claim 1, wherein determining a starting number of locations for PUSCH frequency hopping comprises:

receiving the number of PRBs of a PUSCH scheduled by the UE and the bandwidth of an uplink activated BWP (broadband access point) where the UE is located, wherein the PRBs are sent by a base station;

and determining the starting position number of PUSCH frequency hopping according to the number of PRBs of the PUSCH scheduled by the UE and the bandwidth of the uplink activated BWP where the UE is positioned.

7. The method of claim 6, wherein the determining a starting number of positions for PUSCH hopping comprises:

based on

To determine the starting position number of PUSCH hopping,

wherein the content of the first and second substances,

8. The method of claim 2, wherein the receiving a starting number of positions for PUSCH frequency hopping from a base station comprises: receiving Downlink Control Information (DCI) from a base station, wherein an index of a Time Domain Resource Allocation (TDRA) in the DCI indicates a starting position number of PUSCH frequency hopping.

9. The method of claim 1, further comprising:

when the number of starting positions of PUSCH hopping is equal to or greater than 2, determining the order of the starting positions of the PUSCH hopping according to the order of the offsets between the starting positions of the PUSCH hopping from large to small.

10. The method of claim 1, further comprising:

when the number of starting positions of PUSCH hopping is equal to or greater than 2, the order of the starting positions of DBPG hopping is determined based on the number of orthogonal frequency division multiplexing OFDM symbols contained in a demodulation reference signal DMRS bundling PUSCH group DBPG.

11. The method of claim 10, wherein when the number of OFDM symbols included in one DBPG is less than a threshold number, a start position of hopping frequency of the DBPG is the same as a start position of hopping frequency of a previous DBPG or a start position of hopping frequency of a next DBPG.

12. A method of transmission, comprising:

receiving an indication of transmission of aperiodic channel state information, CSI, on a physical uplink shared channel, PUSCH; and

the aperiodic CSI is transmitted on the PUSCH,

wherein the priority of the PUSCH and the priority of the aperiodic CSI are the same or different.

13. The method of claim 12, wherein the indication is a bit included in downlink control information, DCI, that schedules a PUSCH.

14. The method of claim 12, wherein a correspondence is set between a priority of aperiodic CSI to be transmitted and a value of CSI request information, and the indication is the value of CSI request information.

15. An apparatus for transmitting, comprising:

a transceiver to transmit and receive signals;

a processor; and

a memory having stored therein instructions executable by the processor, the instructions, when executed by the processor, causing the processor to perform the method of any of claims 1-11.