CN115209535A

CN115209535A - Sending method, receiving method and communication device of uplink channel

Info

Publication number: CN115209535A
Application number: CN202110385406.6A
Authority: CN
Inventors: 张战战; 铁晓磊; 花梦; 罗之虎
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2022-10-18
Also published as: WO2022214006A1

Abstract

The application discloses a sending method, a receiving method and a communication device of an uplink channel, wherein the method comprises the following steps: and determining a target transmission mode and sending the uplink channel in the target transmission mode. The target transmission mode is one of the first transmission mode, the second transmission mode, or the third transmission mode provided in the embodiment of the present application. In the first transmission mode, the second transmission mode or the third transmission mode, the first hop of the uplink channel is sent in the mth time unit, and the second hop of the uplink channel is sent in the m + h time unit. A certain number of symbols are spaced between the last one of the symbols for transmitting the first hop and the first one of the symbols for transmitting the second hop. This allows frequency tuning within a certain number of symbols even if the low complexity terminal device transmits the uplink channel within a range exceeding the first bandwidth threshold. Therefore, the sending influence on the uplink channel can be reduced, and the reduction of the transmission performance of the uplink channel of the low-complexity terminal equipment is avoided as much as possible.

Description

Sending method, receiving method and communication device of uplink channel

Technical Field

The present application relates to the field of communications technologies, and in particular, to a sending method, a receiving method, and a communication apparatus for an uplink channel.

Background

Generally, when a terminal device performs information reception or information transmission in a frequency range not exceeding the maximum channel bandwidth of the terminal device, frequency tuning is not required. However, if the terminal device performs information reception or information transmission in a frequency range exceeding the maximum channel bandwidth of the terminal device, the terminal device needs frequency tuning to perform information reception or information transmission in a larger frequency range.

For a low-complexity terminal device, such as a mass machine type communications (mtc) device, because the bandwidth capability of the low-complexity terminal device is limited, when the low-complexity terminal device transmits uplink information in a frequency range exceeding the maximum channel bandwidth of the low-complexity terminal device, the low-complexity terminal device needs M symbols to perform frequency tuning. Therefore, the transmission of the uplink information cannot be sent at the tuning time of the M symbols, which may result in a performance degradation of the low-complexity terminal device for sending the uplink information.

Disclosure of Invention

The application provides a PUCCH transmission method and a communication device, which aim to reduce the performance degradation of PUCCH transmission of low-complexity terminal equipment.

In a first aspect, a PUCCH transmission method is provided, which may be performed by a first communication apparatus, which may be a communication device or a communication apparatus capable of supporting a communication device to implement functions required by the method, such as a chip system. The following description will be given taking the communication device as a terminal device as an example. The method comprises the following steps:

and determining a target transmission mode and sending the uplink channel in the target transmission mode. The target transmission mode is one of the first transmission mode, the second transmission mode, or the third transmission mode provided in the embodiment of the present application.

The first transmission mode is as follows: and sending the first hop of the uplink channel in the mth time unit, and sending the second hop of the uplink channel in the (m + h) th time unit. Wherein the frequency domain resources used to transmit the first hop are different from the frequency domain resources used to transmit the second hop. And the last symbol in the symbols used for sending the first hop is separated from the first symbol in the symbols used for sending the second hop by X symbols, wherein X is equal to P multiplied by n, P is the number of symbols included in a time unit, and n, m and h are positive integers. It should be understood that the first hop and the second hop belong to the same uplink channel.

In the first transmission method provided in the embodiment of the present application, for example, 14 × n symbols are spaced between the first hop and the second hop of any one uplink channel, so that even if the low-complexity terminal device transmits the uplink channel in a range exceeding the first bandwidth threshold, frequency tuning can be performed within 14 × n symbols. Therefore, the sending influence on the uplink channel can be reduced, and the reduction of the transmission performance of the uplink channel of the low-complexity terminal equipment is avoided as much as possible. And any uplink channel, for example, the interval between the first hop and the second hop of the PUCCH is 14 × n symbols, and the low complexity terminal device may determine that the number of the start symbol of the second hop of the PUCCH is the same as the number of the start symbol of the second hop when the normal terminal device transmits the PUCCH by using the intra-slot frequency hopping transmission method. Therefore, the network equipment can uniformly configure the public PUCCH resources (formats) through the system messages without configuring the single PUCCH formats for the low-complexity terminal equipment separately, and the signaling overhead and the resource overhead can be reduced. For example, PUCCH resources are configured for the terminal device along with the current PUCCH format, the candidate PUCCH symbol position of each slot remains unchanged, which can reduce resources used for transmitting PUCCH, and also does not occupy resources allocated to other terminal devices.

The second transmission mode is as follows: and sending the first hop of the uplink channel in the mth time unit, and sending the second hop of the uplink channel in the (m + h) th time unit. Wherein the frequency domain resources used to transmit the first hop are different from the frequency domain resources used to transmit the second hop. And the last symbol in the symbols used for sending the first hop is separated from the first symbol in the symbols used for sending the second hop by X symbols, m is a positive integer, and h is 0 or a positive integer. X is related to L and N, and/or X is related to subcarrier spacing (SCS). And L is the number of the symbols of the uplink channel, and N is the number of the symbols or the maximum number of the symbols which can be adopted by the terminal equipment for frequency tuning. It should be understood that the first hop and the second hop belong to the same uplink channel.

The second transmission method provided in the embodiment of the present application is similar to the first transmission method, and X symbols are spaced between the first hop and the second hop of any one uplink channel, so that even if the low-complexity terminal device transmits the uplink channel in a range exceeding the first bandwidth threshold, frequency tuning can be performed within the X symbols. Therefore, the sending influence on the uplink channel can be reduced, and the reduction of the transmission performance of the uplink channel of the low-complexity terminal equipment is avoided as much as possible. In addition, X may be smaller than 14, that is, the first hop of the uplink channel and the second hop of the uplink channel may be located in the same time slot. This reduces the delay in transmitting the uplink channel.

The third transmission mode is as follows: and sending a first hop of the uplink channel by using continuous L1 symbols in an m-th time unit, and sending a second hop of the uplink channel by using continuous L2 symbols in an m + h time unit, wherein m and h are positive integers. The frequency domain resources used to transmit the first hop and the frequency domain resources used to transmit the second hop are different. The first of the L1 symbols is numbered S1 in the mth time unit and the first of the L2 symbols is numbered S2 in the m + h time unit. S2 is an element in the first set, and the first set is any one of the following sets:

[S1+L1，S1-L1]，[S1+L1，S1]，[S1，S1-L1]or [ S1, S1+ L1, S1-L1]]Wherein, in the process,

L2＝L-L1，

and indicating rounding-down, wherein L is the number of symbols of the uplink channel.

The third transmission mode provided in the embodiment of the present application specifies a relationship between the number S1 of the ending symbol of the first hop of the uplink channel and the number S2 of the starting symbol of the second hop of the uplink channel. Equivalently, it is indirectly indicated that the first and second hops of the uplink channel are separated by a certain number of symbols. The embodiment of the application provides three candidate values of S2, such as S1, S1+ L1 and S1-L1. The terminal device may select one set among any combination of the three candidate values, for example [ S1+ L1, S1-L1], [ S1+ L1, S1], [ S1, S1-L1], or [ S1, S1+ L1, S1-L1], and select one element in the selected set as the target value of S2, which is more flexible.

In a possible implementation manner, X is related to the size of the SCS, and the value of X is determined according to the SCS corresponding to the uplink channel to be transmitted in the embodiment of the present application, which is more flexible. There may be three cases as follows:

in case one, X is equal to P when the SCS corresponding to the uplink channel is smaller than the first threshold. It should be appreciated that the first threshold may be determined based on the length of time required for the terminal device to perform frequency tuning. If the SCS is small, the time required for the low complexity terminal device to perform frequency tuning is short. In this case, X may be equal to P, so as to reduce the time delay for transmitting the uplink channel as much as possible and save the resource overhead.

In case two, X is greater than or equal to 2 × P when the SCS corresponding to the uplink channel is greater than or equal to the first threshold. If the SCS is small, the time required for the low complexity terminal device to perform frequency tuning is longer. In this case, X may be equal to 2 × P to allow as little time as possible for the low complexity terminal device to use for frequency tuning, thereby ensuring as much performance as possible for transmitting the uplink channel.

In case three, or, when the SCS corresponding to the uplink channel is greater than or equal to the first threshold, the number of symbols of the uplink channel is greater than or equal to the minimum number of symbols used for transmitting the uplink channel, and X is equal to P. As an alternative to the second case, in the case that the time required for the low-complexity terminal device to perform frequency tuning is long, although X =2 × P, enough time may be left for the terminal device to perform frequency tuning, but additional transmission delay is also introduced. Therefore, in case three, X is still set equal to P, but the number of symbols of the uplink channel may be limited to ensure that the ratio of the symbols discarded by the low-complexity terminal device due to frequency tuning to the number of symbols in the PUCCH is as small as possible. Therefore, the reliability of sending the PUCCH by the low-complexity terminal equipment is ensured as much as possible.

In a possible implementation manner, the target transmission manner is the second transmission manner, and X is related to L and N. There may be the following three cases.

Case one, where L + N is less than or equal to P, X = N or said X is greater than N. Wherein, P is the number of symbols included in a time unit. It should be understood that if the sum of L and N is less than or equal to P, only N symbols need to be reserved for the low complexity terminal device for frequency tuning, which can ensure that the low complexity terminal device has enough time for frequency tuning and avoid affecting the performance of the terminal device for transmitting PUCCH as much as possible.

In case two, where L + N is greater than P, X is greater than or equal to P × N, N being a positive integer. Wherein, P is the number of symbols included in a time unit. It should be understood that if the sum of L and N is greater than 14, either the time length required for the terminal device to perform frequency tuning is long or the number L of symbols of the uplink channel is large. In order to ensure that the terminal device has enough time to perform frequency tuning, the embodiment of the present application may set X =14 × n,

case three, where L + N is greater than P × s, and L + N is less than or equal to P × (s + 1), X is greater than or equal to P × s, s being a positive integer. Wherein, P is the number of symbols included in a time unit. It is understood that if the sum of L and N is greater than 14 × s, and less than 14 × (s + 1). In order to allow sufficient time for the terminal device to perform frequency tuning, it may be determined that X is greater than or equal to 14 × s. Similarly, the specific implementation and beneficial effects of X =14 × s can be referred to the description of the related contents in the foregoing first transmission manner, and are not described herein again.

In one possible implementation, the target transmission mode is the third transmission mode, h =1. The embodiment of the application provides three candidate values of S2, such as S1, S1+ L1 and S1-L1. The terminal device may select one set among any combination of the three candidate values, for example [ S1+ L1, S1-L1], [ S1+ L1, S1], [ S1, S1-L1], or [ S1, S1+ L1, S1-L1], and select one element in the selected set as the target value of S2, which is more flexible. The following three cases may be included.

In the case where P-2 XL 1 is greater than or equal to N, S2 is an element in [ S1, S1+ L1, S1-L1]. That is, the sum of L and N is less than or equal to P. In this case, only N symbols need to be reserved for the terminal device for frequency tuning, which can ensure that the terminal device has enough time to perform frequency tuning, and reduce the influence on the performance of the terminal device for transmitting the PUCCH. Therefore, the embodiment of the present application may select an element from [ S1, S1+ L1, S1-L1] as S2, i.e., S2= S1, or S2= S1+ L1, or S2= S1-L1.

In case two, where P-L1 is greater than or equal to N and P-2 × L1 is less than N, S2 is an element in [ S1, S1+ L1]. That is, the sum of L1 and N is greater than P, and the sum of L and N is less than P. In this case, it is preferentially ensured that the terminal device has enough time to perform frequency tuning, thereby reducing the influence on the performance of the terminal device for transmitting the uplink channel. Therefore, the embodiment of the present application may select one element from [ S1+ L1, S1] as S2. I.e. S2= S1 or S2= S1+ L1.

Case three, where P-L1 is less than N, S2= S1+ L1. It is understood that P-L1 is less than N, i.e., the sum of L1 and N is greater than P. In this case, it is considered that the time required for the terminal device to perform frequency tuning is long or the number L of symbols of the uplink channel is large. To ensure that the terminal device has enough time to perform frequency tuning, embodiments of the present application may determine S2= S1. I.e. the end symbol of the first hop of the uplink channel is spaced by 14 × P symbols from the start symbol of the second hop of the uplink channel.

In one possible implementation, determining a target transmission mode includes: determining the target transmission mode from a plurality of transmission modes, wherein the plurality of transmission modes further comprise one or more of non-frequency hopping transmission modes, frequency hopping transmission modes in time units and frequency hopping transmission modes between time units;

the non-frequency hopping transmission mode is as follows: transmitting the uplink channel in a non-frequency hopping manner within a time unit;

the frequency hopping transmission mode in the time unit is as follows: transmitting the uplink channel in a frequency hopping manner within a time unit;

the frequency hopping transmission mode among the time units is as follows: and repeating E times of sending the uplink channel, performing ith sending of the uplink channel A for repeating the E times of sending the uplink channel in the mth time unit, and performing (i + 1) th sending of the uplink channel B for repeating the E times of sending the uplink channel in the (m + h) th time unit. The information carried by the uplink channel B is a repetition of the information carried by the uplink channel a. The number of the starting symbol for transmitting the uplink channel a in the mth time unit is the same as the number of the starting symbol for transmitting the uplink channel B in the m + h time unit. The number of symbols for transmitting the uplink channel a in the mth time unit is the same as the number of symbols for transmitting the uplink channel B in the m + h time unit. The frequency domain resource used for sending the uplink channel A is different from the frequency domain resource used for sending the uplink channel B, and m and h are positive integers.

It should be understood that, the embodiments of the present application provide three new transmission modes for an uplink channel, which are compatible with the current transmission mode, and a terminal device may determine which transmission mode to use before sending the uplink channel.

In one possible implementation, determining a target transmission mode from multiple transmission modes includes: determining a target transmission mode from the multiple transmission modes based on a preset rule, wherein the preset rule is as follows: and the terminal equipment sends the uplink channel within the range exceeding the first bandwidth threshold, wherein the target transmission mode is a first transmission mode, a second transmission mode or a third transmission mode. The scheme provides a mode for determining the target transmission mode, for example, the target transmission mode is determined from a plurality of transmission modes according to a preset rule, signaling interaction is not needed, and signaling overhead is saved. Of course, the terminal device may determine the target transmission mode by network device pre-configuration or protocol pre-definition, or the network device indicates the target transmission mode by dynamic signaling, which is simple and direct, and the embodiment of the present application does not limit this.

In a possible implementation manner, the terminal device repeatedly transmits the uplink channel R times, where R is a positive integer greater than or equal to 2, information carried by the uplink channel transmitted each time in the repeated transmission R times is the same, in the repeated transmission R times, Q symbols are spaced between a last symbol of a second hop used for the ith transmission of the uplink channel U and a first symbol of a first hop used for the (i + 1) th transmission of the uplink channel W, and information carried by the uplink channel W is repetition of information carried by the uplink channel U, where the preset rule further includes:

and under the condition that Q is greater than or equal to N, the frequency domain resource of the first hop for transmitting the uplink channel W for the (i + 1) th time is different from the frequency domain resource of the second hop for transmitting the uplink channel W for the ith time.

And under the condition that Q is less than N, the frequency domain resource of the first hop for transmitting the uplink channel W for the (i + 1) th time is the same as the frequency domain resource of the second hop for transmitting the uplink channel W for the (i) th time.

It should be understood that, when the low-complexity terminal device transmits the uplink channel in a range exceeding the first bandwidth threshold, the low-complexity terminal device may transmit the uplink channel by using the first transmission method, the second transmission method, or the third transmission method. Because the first transmission mode, the second transmission mode or the third transmission mode are all the time slot-crossing frequency hopping transmission modes, in two adjacent transmissions, if Q symbols are enough low-complexity terminal equipment to perform frequency tuning. In this case, the low complexity terminal device obviously does not need to perform frequency hopping from the second hop of the ith uplink channel to the first hop of the (i + 1) th uplink channel, so as to reduce the time delay for transmitting the uplink channel.

In a possible implementation manner, a starting frequency domain position of a frequency domain resource of a first hop used for sending the uplink channel W in an mth time unit is a first frequency domain position, and a starting position of a frequency domain resource of a second hop used for sending the uplink channel W in an m + h time unit is a second frequency domain resource, where the first frequency domain position and/or the second frequency domain position are determined according to indication information from the network device, the indication information is used to indicate that a preconfigured starting frequency domain position of the first hop used for sending the uplink channel W is the second frequency domain position, and is used to indicate that a preconfigured starting frequency domain position of the second hop used for sending the uplink channel W is the first frequency domain position.

In the scheme, the uplink channel resources are better shared by the low-complexity terminal equipment and the normal terminal equipment. The low-complexity terminal equipment and the normal terminal equipment can occupy the same time domain resource and occupy different frequency domain resources to send uplink channels, so that the resource overhead can be saved. The network equipment schedules the starting frequency domain positions of the first hop and the second hop of the uplink channel sent by the low-complexity terminal equipment on each time slot to be different from the starting frequency domain positions of the first hop and the second hop of the uplink channel sent by the normal terminal equipment on each time slot. Especially, under the condition that normal terminal equipment repeatedly sends the uplink channel, the low-complexity terminal equipment adopts a cross-time slot transmission mode to enable the second hop of the uplink channel of the low-complexity terminal equipment to be delayed for sending, so that the configured public uplink channel resource can still be used, and the uplink channel resource does not need to be separately configured for the low-complexity terminal equipment, thereby further saving the resource overhead and the signaling overhead.

In one possible implementation, the method further includes: and sending capability information to the network equipment, wherein the capability information is used for indicating whether one or more of the first transmission mode, the second transmission mode and the third transmission mode is supported. In the scheme, the network device can indicate the transmission mode adopted by the terminal device according to the capability information reported by the terminal device, so as to ensure that the transmission mode of the uplink channel configured or indicated by the terminal device is matched with the actual capability of the terminal device.

In a second aspect, corresponding to the first aspect, a PUCCH receiving method is provided, where the method is executable by a second communication apparatus, and the second communication apparatus may be a communication device or a communication apparatus capable of supporting the communication device to implement functions required by the method, such as a chip or a chip system. The following description will be given taking the communication device as a network device as an example. The method comprises the following steps:

generating first indication information and sending the first indication information to a terminal device, wherein the first indication information is used for indicating a target transmission mode in multiple transmission modes, and the multiple transmission modes comprise at least one of a first transmission mode, a second transmission mode and a third transmission mode.

The second transmission mode is as follows: and sending the first hop of the uplink channel in the mth time unit, and sending the second hop of the uplink channel in the (m + h) th time unit. Wherein, the last symbol in the symbols for transmitting the first hop is separated from the first symbol in the symbols for transmitting the second hop by X symbols, m is a positive integer, and h is 0 or a positive integer. The frequency domain resources used to transmit the first hop and the frequency domain resources used to transmit the second hop are different. X is related to L and N, and/or X is related to subcarrier spacing (SCS). And L is the number of the symbols of the uplink channel, and N is the number of the symbols or the maximum number of the symbols which can be adopted by the terminal equipment for frequency tuning. It should be understood that the first hop and the second hop belong to the same uplink channel.

L2＝L-L1，

In a possible implementation manner, when the SCS corresponding to the uplink channel is smaller than a first threshold, X is equal to P;

when SCS corresponding to the uplink channel is greater than or equal to a first threshold, X is greater than or equal to 2 times of P; or, when the SCS corresponding to the uplink channel is greater than or equal to the first threshold, the number of symbols of the uplink channel is greater than or equal to the minimum number of symbols used for transmitting the uplink channel, and X is equal to P.

In one possible implementation, the target transmission mode is a second transmission mode, and X satisfies one or more of the following conditions:

where L + N is less than or equal to P, X = N or X is greater than N;

when L + N is greater than P, X is greater than or equal to P × N, N is a positive integer; alternatively, the first and second electrodes may be,

in the case where L + N is greater than P × s and L + N is less than or equal to P × (s + 1), X is greater than or equal to P × s, s is a positive integer; wherein, P is the number of symbols included in the time unit.

In one possible implementation, the target transmission mode is a third transmission mode, h =1, and S2 satisfies:

when P-2 XL 1 is not less than N, S2 is an element of [ S1, S1+ L1, S1-L1 ];

in the case where P-L1 is greater than or equal to N and P-2 XL 1 is less than N, S2 is an element of [ S1, S1+ L1 ];

in case P-L1 is smaller than N, S2= S1+ L1.

In one possible implementation, the method further includes:

and receiving capability information from a terminal device, wherein the capability information is used for indicating whether one or more transmission modes of the first transmission mode, the second transmission mode and the third transmission mode are supported.

With regard to the technical effects brought about by the second aspect or various possible embodiments of the second aspect, reference may be made to the introduction of the technical effects of the first aspect or various possible embodiments of the first aspect.

In a third aspect, another PUCCH transmission method is provided, which may be performed by a first communication apparatus, which may be a communication device or a communication apparatus capable of supporting a communication device to implement functions required by the method, such as a chip system. The following description will be given taking the communication device as a terminal device as an example. The method comprises the following steps:

the terminal equipment determines a target transmission mode and repeatedly sends an uplink channel in the target transmission mode for R times, wherein the target transmission mode comprises a fourth transmission mode, and the uplink channel comprises at least one of the following modes: a message 3 physical uplink shared channel Msg3PUSCH in the random access process, a physical uplink control channel PUCCH for sending hybrid automatic repeat request HARQ feedback information for the physical downlink shared channel PDSCH carrying the contention resolution identity of the terminal device;

wherein R is a positive integer greater than or equal to 2, information carried by the uplink channel sent each time in R times of repeated sending is the same, and the fourth transmission mode is: and performing ith uplink channel transmission W of the uplink channel transmission repeated R times in the mth time unit, and performing i +1 th uplink channel transmission U of the uplink channel transmission repeated R times in the (m + h) th time unit. The information carried by the uplink channel U is a repetition of the information carried by the uplink channel W. The number of the start symbol for transmitting the uplink channel W in the mth time unit is the same as the number of the start symbol for transmitting the uplink channel U in the m + h time unit. The number of symbols used to transmit the uplink channel W in the mth time unit is the same as the number of symbols used to transmit the uplink channel U in the m + h time unit, respectively. The frequency domain resource used for sending the uplink channel W is different from the frequency domain resource used for sending the uplink channel U, and m and h are positive integers.

The embodiment of the application specifies a low-complexity terminal device which does not support the frequency hopping transmission mode in the time slot, and a mode how to repeatedly send the uplink channel when the uplink channel is sent in a range exceeding a first bandwidth threshold, aiming at a scene that the network device configures the terminal device to repeatedly send 3 uplink channels in the frequency hopping transmission mode in the time slot. For example, the uplink channel may be repeatedly transmitted 2R times, the uplink channel may be transmitted in a frequency hopping manner between two adjacent times, and a certain number of symbols may be spaced between two adjacent times, so that a decrease in transmission performance of the uplink channel due to frequency tuning may be reduced.

In a possible implementation manner, the determining, by the terminal device, the target transmission manner includes: determining the target transmission mode from a plurality of transmission modes, wherein the plurality of transmission modes further comprise: one or more of a non-frequency hopping transmission mode and a frequency hopping transmission mode within a time unit. The non-frequency hopping transmission mode is as follows: transmitting the uplink channel in a non-frequency hopping manner within one time unit. The frequency hopping transmission mode in the time unit is as follows: and transmitting the uplink channel in a frequency hopping mode in one time unit.

The embodiment of the application provides a new transmission mode of an uplink channel, namely a fourth transmission mode, and the non-frequency hopping transmission mode and the frequency hopping transmission mode in a time unit can be regarded as the existing two transmission modes of the uplink channel. In order to be compatible with the existing transmission modes of the uplink channel, one transmission mode may be selected as the target transmission mode from the existing two transmission modes of the uplink channel in combination with the fourth transmission mode provided in the embodiment of the present application.

In one possible implementation, determining the target transmission scheme from a plurality of transmission schemes includes:

determining the target transmission mode from the multiple transmission modes based on a preset rule;

wherein the preset rule comprises: the terminal equipment sends the uplink channel within a range exceeding a first bandwidth threshold, wherein the target transmission mode is the fourth transmission mode; alternatively, the first and second electrodes may be,

the preset rules include: the terminal equipment sends the uplink channel within a range exceeding a first bandwidth threshold, and when N/L is greater than or equal to a preset threshold, the target transmission mode is the fourth transmission mode;

wherein, N is the number of symbols or the maximum number of symbols that can be adopted for the frequency tuning of the terminal device, and L is the number of symbols of the uplink channel.

The embodiment of the application provides a method for determining a target transmission mode. The target transmission mode can be determined from multiple transmission modes according to a preset rule without signaling interaction, so that the signaling overhead is saved. Of course, the terminal device may determine the target transmission mode by network device pre-configuration or protocol pre-definition, or the network device indicates the target transmission mode by dynamic signaling, which is simple and direct, and the embodiment of the present application does not limit this.

In a possible implementation manner, the determining, by the terminal device, the target transmission manner includes:

the terminal equipment receives indication information from network equipment, wherein the indication information is used for indicating the repetition times E, and R and E satisfy the following relation:

if the interval between the last symbol of the uplink channel W sent in the ith time and the first symbol of the uplink channel U sent in the (i + 1) th time is larger than or equal to N, the R is equal to the E; if the interval between the last symbol of the uplink channel W sent in the ith time and the first symbol of the uplink channel U sent in the (i + 1) th time is less than N, the R is equal to 2 times of the E; and N is the number of symbols or the maximum number of symbols which can be adopted by the terminal equipment for frequency tuning.

Consider that the network device may configure the terminal device to repeat sending the uplink channel E times. For the low complexity terminal device, if the PUCCH is repeatedly transmitted twice in adjacent time, the number of symbols spaced between the end symbol of the ith uplink channel W and the start symbol of the (i + 1) th uplink channel U is less than the number of symbols corresponding to the time length required for the low complexity terminal device to perform frequency tuning. As such, the low complexity terminal device may need to discard a portion of the symbols of the uplink channel W and/or the uplink channel U. In order to reduce discarded symbols as much as possible, the embodiment of the present application may repeat sending the uplink channel 2E times.

In one possible implementation manner, the Msg3PUSCH is: and downlink control information DCI or random access uplink grant RAR UL grant used for scheduling the Msg3PUSCH indicates the Msg3PUSCH sent in a frequency hopping mode.

Corresponding to the third aspect, a fourth aspect provides another PUCCH receiving method, which may be performed by a second communication apparatus, which may be a communication device or a communication apparatus capable of supporting the communication device to implement functions required by the method, such as a chip or a chip system. The following description will be given taking the communication device as a network device as an example. The method comprises the following steps:

generating third indication information, and sending the third indication information to a terminal device, where the third indication information is used to indicate the terminal device to send an uplink channel repeatedly R times in a target transmission mode, where the target transmission mode includes a fourth transmission mode, and the uplink channel includes at least one of the following: the terminal equipment comprises a Msg3PUSCH in the random access process and a PUCCH used for sending HARQ feedback information of the PDSCH carrying the competition resolving identification of the terminal equipment;

wherein R is a positive integer greater than or equal to 2, and the fourth transmission mode is: and in the R times of repeated transmission, the information carried by the uplink channel every time is the same, the ith time of transmitting the uplink channel W of the R times of repeated transmission is carried out in the mth time unit, and the (i + 1) th time of transmitting the uplink channel U of the R times of repeated transmission is carried out in the (m + h) th time unit. The information carried by the uplink channel U is a repetition of the information carried by the uplink channel W. The number of the start symbol for transmitting the uplink channel W in the mth time unit is the same as the number of the start symbol for transmitting the uplink channel U in the m + h time unit. The number of symbols used to transmit the uplink channel W in the mth time unit is the same as the number of symbols used to transmit the uplink channel U in the m + h time unit, respectively. The frequency domain resource used for sending the uplink channel W is different from the frequency domain resource used for sending the uplink channel U, and m and h are positive integers.

With regard to the technical effects brought by the fourth aspect or the various possible embodiments of the fourth aspect, reference may be made to the introduction of the technical effects of the third aspect or the various possible embodiments of the third aspect.

In a fifth aspect, the present application provides a communication apparatus, which may be a terminal-side communication device or a communication apparatus capable of supporting the terminal-side communication device to implement the functions required by the method, such as a chip or a chip system. The communication device can comprise a processing module and a transceiver module, wherein the processing module is used for determining a target transmission mode, the transceiver module is used for sending an uplink channel in the target transmission mode, and the target transmission mode is a first transmission mode, a second transmission mode or a third transmission mode.

Wherein, the first transmission mode is as follows: and sending a first hop of the uplink channel in the mth time unit, and sending a second hop of the uplink channel in the (m + h) th time unit, wherein the first hop and the second hop belong to the same uplink channel. And X symbols are separated from the last symbol in the symbols for transmitting the first hop and the first symbol in the symbols for transmitting the second hop, wherein X is equal to P × n, and P is the number of symbols included in the time unit. The frequency domain resource used for sending the first hop is different from the frequency domain resource used for sending the second hop, n is a positive integer, and m and h are positive integers;

the second transmission mode is as follows: and sending a first hop of the uplink channel in the mth time unit, and sending a second hop of the uplink channel in the (m + h) th time unit, wherein the first hop and the second hop belong to the same uplink channel. Wherein, the last symbol in the symbols used for transmitting the first hop is separated from the first symbol in the symbols used for transmitting the second hop by X symbols. The frequency domain resources used for transmitting the first hop are different from the frequency domain resources used for transmitting the second hop, m is a positive integer, and h is 0 or a positive integer. X is related to L and N, and/or X is related to subcarrier spacing SCS; l is the number of the symbols of the uplink channel, and N is the number of the symbols or the maximum number of the symbols which can be adopted by the terminal equipment for frequency tuning;

the third transmission mode is as follows: and transmitting the first hop of the uplink channel by using continuous L1 symbols in the mth time unit, and transmitting the second hop of the uplink channel by using continuous L2 symbols in the m + h time unit. The frequency domain resources used to transmit the first hop are different from the frequency domain resources used to transmit the second hop. The number of the first symbol in the L1 symbols in the mth time unit is S1, the number of the first symbol in the L2 symbols in the m + h time unit is S2, m and h are positive integers, S2 is an element in a first set, and the first set is any one of the following sets:

[S1+L1，S1-L1]，[S1+L1，S1]，[S1，S1-L1]or [ S1, S1+ L1, S1-L1]]Wherein, in the step (A),

L2＝L-L1，

and indicating that rounding is performed downwards, wherein L is the number of symbols of the uplink channel.

in the case where L + N is less than or equal to P, X = N or X is greater than N;

x is greater than or equal to Pxs, s is a positive integer, in the case where L + N is greater than Pxs, and L + N is less than or equal to Px (s + 1); wherein, P is the number of symbols included in the time unit.

in the case where P-2 XL 1 is greater than or equal to N, S2 is an element of [ S1, S1+ L1, S1-L1 ];

in the case where P-L1 is less than N, S2= S1+ L1.

In a possible implementation manner, the processing module is specifically configured to determine the target transmission manner from multiple transmission manners, where the multiple transmission manners further include one or more of a non-frequency hopping transmission manner, a frequency hopping transmission manner within a time unit, and a frequency hopping transmission manner between time units;

the frequency hopping transmission mode among the time units is as follows: repeating E times of sending the uplink channel, performing ith sending of the uplink channel A for repeating the E times of sending the uplink channel in an mth time unit, performing i +1 th sending of the uplink channel B for repeating the R times of sending the uplink channel in an m + h time unit, wherein the information carried by the uplink channel B is the repetition of the information carried by the uplink channel A, the number of the starting symbols and the symbols used for sending the uplink channel A in the mth time unit is the same as the number of the starting symbols and the symbols used for sending the uplink channel B in the m + h time unit, the frequency domain resource used for sending the uplink channel A is different from the frequency domain resource used for sending the uplink channel B, and m and h are positive integers.

In a possible implementation manner, the processing module is specifically configured to: determining the target transmission mode from the multiple transmission modes based on a preset rule, wherein the preset rule is as follows: and the terminal equipment sends the uplink channel within the range exceeding the first bandwidth threshold, wherein the target transmission mode is a first transmission mode, a second transmission mode or a third transmission mode.

In a possible implementation manner, a starting frequency domain position of a frequency domain resource of a first hop used for sending an uplink channel in an m-th time unit is a first frequency domain position, a starting frequency domain position of a frequency domain resource of a second hop used for sending the uplink channel in an m + h-th time unit is a second frequency domain resource, where the first frequency domain position and/or the second frequency domain position are determined according to indication information from a network device, the indication information is used for indicating that a starting frequency domain position of a frequency domain resource of the first hop used for sending the uplink channel is preconfigured second frequency domain position, and indicating that a starting frequency domain position of a frequency domain resource of the second hop used for sending the uplink channel is preconfigured first frequency domain position.

In a possible implementation manner, the terminal device repeatedly sends the uplink channel R times, where R is a positive integer greater than or equal to 2, and information carried by the uplink channel sent each time in the repeated sending R times is the same, in the repeated sending R times, Q symbols are spaced between the last symbol of the second hop used for sending the uplink channel U i-th time and the first symbol of the first hop used for sending the uplink channel W i + 1-th time, and information carried by the uplink channel W is repetition of information carried by the uplink channel U;

and under the condition that Q is greater than or equal to N, the frequency domain resource of the first hop for transmitting the uplink channel W for the (i + 1) th time is different from the frequency domain resource of the second hop for transmitting the uplink channel U for the ith time.

And under the condition that Q is less than N, the frequency domain resource of the first hop for transmitting the uplink channel W for the (i + 1) th time is the same as the frequency domain resource of the second hop for transmitting the uplink channel U for the (i) th time.

In one possible implementation, the transceiver module is further configured to:

and sending capability information to a network device, wherein the capability information is used for indicating whether one or more transmission modes of the first transmission mode, the second transmission mode and the third transmission mode are supported.

In a sixth aspect, the present application provides a communication apparatus, which may be a network side communication device or a communication apparatus capable of supporting the network side communication device to implement the functions required by the method, such as a chip or a chip system. The communication device can comprise a processing module and a transceiver module, wherein the processing module is used for generating first indication information; the transceiver module is configured to send the first indication information to a terminal device, where the first indication information is used to indicate a target transmission mode among multiple transmission modes, and the multiple transmission modes include at least one of a first transmission mode, a second transmission mode, and a third transmission mode.

Wherein, the first transmission mode is as follows: sending a first hop of the uplink channel in an m-th time unit, sending a second hop of the uplink channel in an m + h time unit, wherein the first hop and the second hop belong to the same uplink channel, X symbols are spaced between the last symbol in the symbols used for sending the first hop and the first symbol in the symbols used for sending the second hop, X is equal to P X n, P is the number of symbols included in the time unit, frequency domain resources used for sending the first hop are different from the frequency domain resources used for sending the second hop, n is a positive integer, and m and h are positive integers;

the second transmission mode is as follows: and sending a first hop of the uplink channel in the mth time unit, and sending a second hop of the uplink channel in the m + h time unit, wherein the first hop and the second hop belong to the same uplink channel, and X symbols are arranged between the last symbol in the symbols used for sending the first hop and the first symbol in the symbols used for sending the second hop. The frequency domain resources used for transmitting the first hop are different from the frequency domain resources used for transmitting the second hop, m is a positive integer, and h is 0 or a positive integer. X is related to L and N, and/or X is related to subcarrier spacing SCS; l is the number of the symbols of the uplink channel, and N is the number of the symbols or the maximum number of the symbols which can be adopted by the terminal equipment for frequency tuning;

the third transmission mode is as follows: and sending the first hop of the uplink channel by continuous L1 symbols in the mth time unit, and sending the second hop of the uplink channel by continuous L2 symbols in the (m + h) th time unit. The frequency domain resources used to transmit the first hop are different from the frequency domain resources used to transmit the second hop. The number of the first symbol of the L1 symbols in the mth time unit is S1, the number of the first symbol of the L2 symbols in the m + h time unit is S2, m and h are positive integers, S2 is an element in a first set, and the first set is any one of the following sets:

L2＝L-L1，

in case P-L1 is smaller than N, S2= S1+ L1.

and receiving capability information from the terminal equipment, wherein the capability information is used for indicating whether one or more transmission modes of a first transmission mode, a second transmission mode and a third transmission mode are supported.

With regard to the technical effects brought about by the fifth aspect or the sixth aspect or the various possible implementations of the fifth aspect or the various possible implementations of the sixth aspect, reference may be made to the introduction of the technical effects of the first aspect or the second aspect or the various possible implementations of the first aspect or the various possible implementations of the second aspect.

In a seventh aspect, an embodiment of the present application provides a communication apparatus, which may be a terminal-side communication device or a communication apparatus, such as a chip or a chip system, capable of supporting the terminal-side communication device to implement the functions required by the method. The communication device may include a processing module and a transceiver module. The processing module is used for determining a target transmission mode; the transceiver module is configured to repeatedly send an uplink channel in a target transmission manner for R times, where the target transmission manner includes a fourth transmission manner, and the uplink channel includes at least one of the following: the physical uplink shared channel (Msg 3 PUSCH) in the random access process is used for sending the Physical Uplink Control Channel (PUCCH) for sending hybrid automatic repeat request (HARQ) feedback information of the PDSCH carrying the contention resolution identification of the terminal equipment.

Wherein, R is a positive integer greater than or equal to 2, and the information carried by the uplink channel sent each time in R times of repeated sending is the same. The fourth transmission mode is as follows: and performing ith uplink channel transmission W for repeating R uplink channel transmissions in the mth time unit, and performing i +1 uplink channel transmission U for repeating R uplink channel transmissions in the m + h time unit. The information carried by the uplink channel U is a repetition of the information carried by the uplink channel W. The number of the start symbol for transmitting the uplink channel W in the mth time unit is the same as the number of the start symbol for transmitting the uplink channel U in the m + h time unit. The number of symbols used to transmit the uplink channel W in the mth time unit is the same as the number of symbols used to transmit the uplink channel U in the m + h time unit. The frequency domain resource used for sending the uplink channel W is different from the frequency domain resource used for sending the uplink channel U, and m and h are positive integers.

In one possible implementation, the processing module is specifically configured to: determining the target transmission mode from a plurality of transmission modes, wherein the plurality of transmission modes further comprise: one or more of a non-frequency hopping transmission mode and a frequency hopping transmission mode in a time unit. The non-frequency hopping transmission mode is as follows: the uplink channel is transmitted in a non-frequency hopping manner within one time unit. The frequency hopping transmission mode in the time unit is as follows: the uplink channel is transmitted in a frequency hopping manner within one time unit.

In one possible implementation, the processing module is specifically configured to: and determining a target transmission mode from the plurality of transmission modes based on a preset rule. Wherein, the preset rule comprises: and sending the uplink channel within the range exceeding the first bandwidth threshold, wherein the target transmission mode is the fourth transmission mode. Or, the preset rule includes: and when the uplink channel is sent within the range exceeding the first bandwidth threshold and the N/L is greater than or equal to a preset threshold, the target transmission mode is the fourth transmission mode. Wherein, N is the number of symbols or the maximum number of symbols that can be used for the frequency tuning of the terminal device, and L is the number of symbols of the uplink channel.

In one possible implementation, the processing module is specifically configured to: determining R according to received indication information of the network equipment, wherein the indication information is used for indicating the repetition times E, and R and E satisfy the following relation:

if the interval between the last symbol of the uplink channel W transmitted at the ith time and the first symbol of the uplink channel U transmitted at the (i + 1) th time is greater than or equal to N, R is equal to E. If the interval between the last symbol of the uplink channel W transmitted at the ith time and the first symbol of the uplink channel U transmitted at the (i + 1) th time is less than N, R is equal to 2 times of E. And N is the number of symbols or the maximum number of symbols which can be adopted by the terminal equipment for frequency tuning.

In one possible implementation, msg3PUSCH is: DCI used for scheduling the Msg3PUSCH or random access uplink grant RAR UL grant indicates the Msg3PUSCH transmitted in a frequency hopping mode.

In an eighth aspect, the present application provides a communication apparatus, which may be a network-side communication device or a communication apparatus capable of supporting the network-side communication device to implement the functions required by the method, such as a chip or a chip system. The communication device may include a processing module and a transceiver module. Wherein the processing module generates first indication information; the transceiver module is configured to send third indication information to the terminal device, where the third indication information is used for the terminal device to repeatedly send the uplink channel in the target transmission manner R times. The target transmission mode includes a fourth transmission mode, and the uplink channel includes at least one of the following: msg3PUSCH in the random access process, PUCCH used for sending HARQ feedback information for PDSCH carrying the contention resolution identity of the terminal device.

In one possible implementation, the processing module is specifically configured to: determining the target transmission mode from a plurality of transmission modes, wherein the plurality of transmission modes further comprise: one or more of a non-frequency hopping transmission mode and a frequency hopping transmission mode within a time unit. The non-frequency hopping transmission mode is as follows: the uplink channel is transmitted in a non-frequency hopping manner within one time unit. The frequency hopping transmission mode in the time unit is as follows: the uplink channel is transmitted in a frequency hopping manner within one time unit.

In a possible implementation manner, the processing module is specifically configured to: and determining a target transmission mode from the plurality of transmission modes based on a preset rule. Wherein, the preset rule comprises: and sending the uplink channel within the range exceeding the first bandwidth threshold, wherein the target transmission mode is the fourth transmission mode. Or, the preset rule includes: and when the uplink channel is sent within the range exceeding the first bandwidth threshold and the N/L is greater than or equal to a preset threshold, the target transmission mode is the fourth transmission mode. Wherein, N is the maximum number of symbols that can be used for frequency tuning when the terminal device hops within a range exceeding the first bandwidth threshold, and L is the number of symbols of the uplink channel.

In one possible implementation, the transceiver module is further configured to: sending fourth indication information to the terminal equipment, wherein the fourth indication information is used for indicating the repetition times E, and R and E satisfy the following relation:

if the interval between the last symbol of the uplink channel W transmitted at the ith time and the first symbol of the uplink channel U transmitted at the (i + 1) th time is greater than or equal to N, R is equal to E. If the interval between the last symbol of the uplink channel W transmitted at the ith time and the first symbol of the uplink channel U transmitted at the (i + 1) th time is less than N, R is equal to 2 times of E. And N is the maximum number of symbols which can be adopted by the terminal equipment for frequency tuning.

With regard to the technical effects brought about by the seventh aspect or the eighth aspect or the various possible implementations of the seventh aspect or the various possible implementations of the eighth aspect, reference may be made to the introduction of the technical effects of the fifth aspect or the sixth aspect or the various possible implementations of the fifth aspect or the various possible implementations of the sixth aspect.

Ninth, the present application provides a communication device, which may be the communication device of any one of the fifth to eighth aspects in the above embodiments, or a chip system provided in the communication device of any one of the fifth to eighth aspects. The communication device comprises a communication interface, a processor and optionally a memory. Wherein the memory is used for storing computer programs or instructions or data, the processor is coupled with the memory and the communication interface, and when the processor reads the computer programs or instructions or data, the communication device is caused to execute the method executed by the terminal device or the network device in the above method embodiments.

It is to be understood that the communication interface may be a transceiver in the communication device, for example implemented by an antenna, a feeder, a codec, etc. in said communication device, or, if the communication device is a chip provided in a network device, the communication interface may be an input/output interface of the chip, for example an input/output circuit, a pin, etc., for inputting/outputting instructions, data or signals. The transceiver is used for the communication device to communicate with other equipment. Exemplarily, when the communication apparatus is a terminal, the other device is a network device; or, when the communication device is a network device, the other device is a terminal.

In a tenth aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor, and may further include a memory and/or a communication interface, and is configured to implement the method described in any one of the first aspect to the fourth aspect. In one possible implementation, the system-on-chip further includes a memory for storing program instructions and/or data. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

In an eleventh aspect, an embodiment of the present application provides a communication system, which includes the communication apparatus of the fifth aspect and the communication apparatus of the sixth aspect; or the communication system comprises the communication device of the seventh aspect and the communication device of the eighth aspect.

In a twelfth aspect, the present application provides a computer-readable storage medium storing a computer program which, when executed, implements the method of any of the first to fourth aspects described above.

In a thirteenth aspect, there is provided a computer program product comprising: computer program code which, when executed, causes the method of any of the first to fourth aspects described above to be performed.

The advantageous effects of the above-described fifth to thirteenth aspects and implementations thereof may be referred to the description of the advantageous effects of the aspects or the aspects and implementations thereof.

Drawings

Fig. 1 is a schematic diagram of a network architecture suitable for use in the embodiment of the present application;

FIG. 2 is a schematic diagram of a frequency hopping signal;

FIG. 3 is a schematic diagram of a non-frequency hopping signal;

FIG. 4 is a schematic diagram of inter-slot hopping;

FIG. 5 is a schematic diagram of intra-slot frequency hopping;

fig. 6 is a schematic diagram of normal terminal equipment repeatedly transmitting PUCCH in a frequency hopping transmission mode within a timeslot;

fig. 7 is another schematic diagram of normal terminal equipment repeatedly transmitting PUCCH in a frequency hopping transmission mode within a slot;

fig. 8 is a diagram illustrating that a normal terminal device repeatedly transmits a PUCCH in an inter-slot frequency hopping transmission manner;

fig. 9 is a diagram illustrating that a terminal device transmits a PUCCH in a frequency range not exceeding the maximum channel bandwidth of the terminal device;

fig. 10 is a diagram illustrating that a terminal device transmits a PUCCH in a frequency range exceeding the maximum channel bandwidth of the terminal device;

fig. 11 is a first schematic diagram of time-frequency resources used by a low-complexity terminal device to transmit a PUCCH in the embodiment of the present application;

fig. 12 is a second schematic diagram of time-frequency resources used by a low-complexity terminal device to transmit a PUCCH in the embodiment of the present application;

fig. 13 is a third schematic diagram of time-frequency resources used by a low-complexity terminal device to transmit a PUCCH in the embodiment of the present application;

fig. 14 is a fourth schematic diagram of time-frequency resources used by a low-complexity terminal device to transmit a PUCCH in the embodiment of the present application;

fig. 15 is a fifth schematic diagram of time-frequency resources used by a low-complexity terminal device to transmit a PUCCH in the embodiment of the present application;

fig. 16 is a sixth schematic diagram of time-frequency resources used by a low-complexity terminal device to transmit a PUCCH in the embodiment of the present application;

fig. 17 is a seventh schematic diagram of time-frequency resources used by the low-complexity terminal device to send the PUCCH in the embodiment of the present application;

fig. 18 is an eighth schematic diagram of a time-frequency resource used by a low-complexity terminal device to transmit a PUCCH in the embodiment of the present application;

fig. 19 is a ninth schematic diagram of time-frequency resources used by a low-complexity terminal device to send a PUCCH in the embodiment of the present application;

fig. 20 is a schematic flowchart of an uplink channel transmitting and receiving method according to an embodiment of the present application;

fig. 21 is a diagram of low complexity terminal device 1 transmitting PUCCH on configured PUCCH resources;

fig. 22 is a diagram illustrating two low complexity terminal devices transmitting PUCCH on configured PUCCH resources;

fig. 23 is another diagram of two low complexity terminal devices transmitting PUCCH on configured PUCCH resources;

fig. 24 is a diagram illustrating PUCCH resources shared by three low complexity terminal devices in the prior art;

fig. 25 is a schematic diagram illustrating that three low-complexity terminal devices share PUCCH resources according to an embodiment of the present application;

fig. 26 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 27 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 28 is another schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 29 is another schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

The technical solution provided in the embodiment of the present application may be applied to a fifth generation (5G) mobile communication system, such as an NR system, or applied to a Long Term Evolution (LTE) system, or may also be applied to a next generation mobile communication system or other similar communication systems, which is not limited specifically.

Referring to fig. 1, an exemplary architecture diagram of a communication system applicable to the embodiment of the present application is shown, where the communication system may include a core network device, a network device, and at least one terminal. Fig. 1 illustrates an example in which at least one terminal is two terminals. The terminal is connected with the network equipment in a wireless mode, and the network equipment is connected with the core network equipment in a wireless or wired mode. The core network device and the network device may be independent different physical devices; or the function of the core network equipment and the logic function of the network equipment are integrated on the same physical equipment; or part of the functions of the core network device and part of the functions of the network device are integrated on the same physical device. It should be noted that fig. 1 is only an illustration, and the embodiment of the present application does not limit the number of core network devices, and terminals included in the mobile communication system. In some embodiments, the communication system may also include other network devices, such as wireless relay devices, wireless backhaul devices, and the like.

The network device is AN access device that the terminal accesses to the mobile communication system in a wireless manner, and includes, for example, AN Access Network (AN) device, such as a base station (e.g., AN access point). The network device may also refer to a device that communicates with the terminal at an air interface, such as other possible terminal apparatuses; also for example, in one type of V2X technology, the network device is a Road Side Unit (RSU). The base station may be configured to interconvert the received air frame with an Internet Protocol (IP) packet as a router between the terminal and the rest of the access network, which may include an IP network. The RSU may be a fixed infrastructure entity supporting V2X applications and may exchange messages with other entities supporting V2X applications. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved base station (NodeB or eNB or e-NodeB) in a Long Term Evolution (LTE) system or a long term evolution-advanced (LTE-a) system; or may also include next generation node B (gNB) in a 5G NR system; or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud RAN (Cloud radio access network) system; or may also include an access node in a wIreless fIdelity (Wi-Fi) system, and the like, and the embodiments of the present application do not limit the specific technology and the specific device form adopted by the wIreless network device.

In an embodiment of the present application, a terminal (terminal) may be a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), and the like. The network device may be a next Generation base station (gNB) in the NR system, an evolved node B (eNB) in the LTE system, or the like. By way of example and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable smart device or intelligent wearable equipment etc. is the general term of using wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. The various terminal devices described above, if located on a vehicle (e.g. placed in or mounted in a vehicle), may be considered to be vehicle-mounted terminal devices, also referred to as on-board units (OBUs), for example.

Terminals can be classified into a plurality of types of terminals according to the types of services supported by the terminal device. For example, an NR REDCAP UE, i.e., a low-complexity or low-power (REDCAP) terminal, may be less complex than other terminals in terms of supported bandwidth, power consumption, number of antennas, etc., such as narrower supported bandwidth, lower power consumption, fewer antennas, etc. This type of terminal may also be referred to as an (NR light, NRL) terminal, i.e. a lightweight version of the terminal. In contrast, a non-low complexity or non-reduced capability terminal device (e.g., an eMBB terminal device) may be referred to as a normal terminal device or a legacy (legacy) terminal device in the embodiments of the present application. Alternatively, two types of terminal devices may be considered to exist in the embodiments of the present application. For example, a first class of terminal devices, i.e., low complexity terminal devices. The second type of terminal device may be a terminal device other than a low complexity terminal device.

The terminal device in this embodiment may be a first type terminal device or a second type terminal device, or other terminal devices that need to perform transmission performance enhancement, such as an Enhanced Mobile Broadband (eMBB) terminal device. The distinction between the first type of terminal device and the second type of terminal device comprises at least one of:

1. the bandwidth capabilities are different. The maximum bandwidth supported by the first type of terminal device may be greater than the maximum bandwidth supported by the second type of terminal device. For example, the first type of terminal device may support communication with the network device using 100MHz frequency domain resources on one carrier at maximum, and the second type of terminal device may support communication with the network device using 20MHz frequency domain resources or 10MHz frequency domain resources or 5MHz frequency domain resources on one carrier at maximum.

2. The number of the transmitting and receiving antennas is different. The antenna configuration of the first type of terminal device may be larger than the antenna configuration of the second type of terminal device. For example, the minimum antenna configuration supported by the first type of terminal device may be greater than the maximum antenna configuration supported by the second type of terminal device.

3. The maximum uplink transmission power is different. The uplink maximum transmission power of the first type of terminal device may be greater than the uplink maximum transmission power of the second type of terminal device.

4. The protocol versions corresponding to the first type terminal equipment and the second type terminal equipment are different. For example, terminal devices of the first type may be considered as NR Rel-15 and NR Rel-16 terminal devices, and terminal devices of the second type may be considered as NR Rel-17 terminal devices.

5. The first type terminal device and the second type terminal device support different Carrier Aggregation (CA) capabilities. For example, a first class of terminal devices may support carrier aggregation, while a second class of terminal devices does not support carrier aggregation; for another example, the terminal devices of the second type and the terminal devices of the first type both support carrier aggregation, but the maximum number of cells for carrier aggregation simultaneously supported by the terminal devices of the first type is greater than the maximum number of cells for carrier aggregation simultaneously supported by the terminal devices of the second type.

6. The first type of terminal device and the second type of terminal device have different Frequency Division Duplex (FDD) capabilities. For example, a first class of terminal devices may support full duplex FDD, while a second class of terminal devices may support only half duplex FDD.

7. The second type of terminal device and the first type of terminal device have different processing time capabilities for data, for example, the minimum time delay between the first type of terminal device receiving the downlink data and sending the feedback to the downlink data is smaller than the minimum time delay between the second type of terminal device receiving the downlink data and sending the feedback to the downlink data.

8. The transmission peak rates of the uplink and/or downlink corresponding to the first type of terminal equipment and the second type of terminal equipment are different.

Technical terms referred to in the embodiments of the present application are explained below.

1) A time unit may refer to a slot (slot) or a subframe or a time unit including a certain number of symbols, or may also be a time span. In the embodiment of the present application, a time unit is taken as an example of one time slot. A portion of a timeslot may refer to symbols (symbols) for uplink transmission in a timeslot, such as symbols starting from one uplink and downlink transition point to a boundary of the timeslot, or symbols starting from one uplink and downlink transition point to the next uplink and downlink transition point for uplink transmission. For downlink transmission, a part of a timeslot may be a symbol for downlink transmission starting from a timeslot boundary to an uplink/downlink transition point, or a symbol for downlink transmission starting from an uplink/downlink transition point to a timeslot boundary, or a symbol for downlink transmission starting from an uplink/downlink transition point to a next uplink/downlink transition point. In this application, if not specifically stated, the symbols all refer to time domain symbols, and the time domain symbols may be Orthogonal Frequency Division Multiplexing (OFDM) symbols or Discrete Fourier Transform spread-spectrum-OFDM (DFT-s-OFDM) symbols.

2) The carrier bandwidth part (carrier bandwidth part) may be a continuous resource in the frequency domain, and may also be referred to as a bandwidth part (BWP or BP), a subband (subband), a narrowband or narrowband (narrowband) bandwidth, or may also have other names.

The carrier bandwidth part described herein may be a downlink carrier bandwidth part, which is used for downlink reception by the terminal device, and at this time, the bandwidth of the carrier bandwidth part may exceed the reception bandwidth capability of the terminal device; or, the carrier bandwidth part may also be an uplink carrier bandwidth part, which is used for the terminal device to perform uplink transmission, where the bandwidth of the carrier bandwidth part may exceed the transmission bandwidth capability of the terminal device. In this embodiment, the bandwidth capability of the terminal device may be a channel bandwidth supported by the terminal device, or a maximum transmission bandwidth supported by the terminal device, or a number of Resource Blocks (RBs) supported by the terminal device, or a maximum number of resource blocks supported by the terminal device.

In NR, a network device may configure BWP for a terminal device, and the terminal device performs information transmission on the configured BWP. The information transmission herein may be a channel transmission, a signaling transmission, a data transmission, or a reference signal transmission. The transmission here may be transmission or reception.

3) Frequency hopping (frequency hopping) refers to a communication method in which both a receiving end and a transmitting end change frequency domain resources used in an information transmission process according to a predetermined rule, so as to obtain a frequency diversity gain. Fig. 2 is a schematic diagram of a frequency hopping signal. As shown in fig. 2, 5 time periods are included in the time domain: t1 to t5, comprising 3 frequency domain resources in the frequency domain: the 5 time periods f1 to f3 and t1 to t5 correspond to frequency domain resources f3, f1, f2, f3 and f1, respectively. In contrast, fig. 3 is a schematic diagram of a non-frequency hopping signal. As shown in fig. 3, 5 time periods are included in the time domain: t1 to t5, comprising 3 frequency domain resources in the frequency domain: the frequency domain resources corresponding to the 5 time periods f1 to f3 and t1 to t5 are respectively f2.

In the NR system, inter-slot (inter-slot) frequency hopping or intra-slot (intra-slot) frequency hopping when uplink information is repeatedly transmitted, and intra-slot frequency hopping when uplink information is not repeatedly transmitted are supported. Taking PUSCH as an example, radio Resource Control (RRC) signaling indicates whether intra-slot frequency hopping or inter-slot frequency hopping is used, and scheduling signaling (e.g., DCI) indicates whether frequency hopping is used in data transmission. Meanwhile, the scheduling signaling also indicates the time-frequency resource of data transmission. It should be noted that the information transmission in this document may be a channel transmission, a signaling transmission, a data transmission, or a reference signal transmission. The transmission here may be transmission or reception. The uplink information herein may be information carried by an uplink channel, such as PUCCH or PUSCH.

Intra-slot (intra-slot) frequency hopping means that frequency domain resources used for information transmission are changed within a slot according to a predetermined rule. Taking two-hop frequency hopping in a slot as an example, information to be transmitted is divided into 2 parts, and the two parts use different frequency domain resources to transmit in the slot. Taking the example of sending the PUCCH by the sending end, assuming that the length of the PUCCH is L, that is, the PUCCH occupies L symbols, the sending end sends the PUCCH in a frequency hopping manner within a slot, and may divide the PUCCH into a first hop and a second hop, where the first hop of the L symbols is used

One symbol transmits a first hop on a first frequency domain resource, of L symbols

The symbol transmits a second hop on a second frequency domain resource. The first frequency domain resource and the second frequency domain resource may or may not have an intersection. For easy understanding, please refer to fig. 4, fig. 4 is a schematic diagram of intra-slot frequency hopping. As shown in fig. 4, 1 slot is included in the time domain, and 2 frequency domain resources are included in the frequency domain: f1 and f2. The PUCCH transmitted by the transmitting end includes two parts, which are a first part and a second part, respectively. Taking PUCCH occupying 8 symbols as an example, the transmitting end transmits the first part using frequency domain resource f2 on symbols 6 to 9, and transmits the second part using frequency domain resource f1 on symbols 10 to 13. The shaded portion in fig. 4 represents the resources occupied by transmitting the PUCCH. It should be noted that, in the case of an OFDM symbol using a Normal Cyclic Prefix (NCP), one slot may include 14 symbols; in the case of an Extended Cyclic Prefix (ECP) employed for an OFDM symbol, one slot may include 12 symbols. In the embodiment of the present application, an example is that one slot includes 14 symbols.

Inter-slot (inter-slot) frequency hopping means that frequency domain resources used for information transmission remain unchanged within a slot, but the frequency domain resources used for information transmission change according to a predetermined rule among different slots. FIG. 5 is a schematic diagram of inter-slot frequency hopping. As shown in fig. 5, 2 slots are included in the time domain, each slot has 14 symbols, and 2 frequency domain resources are included in the frequency domain: f1 and f2. The transmitting end uses the frequency domain resource f1 to transmit data on the 1 st slot, and uses the frequency domain resource f2 to transmit data on the 2 nd slot. It should be noted that, the embodiment of the present application also provides a new uplink channel transmission method, and the transmission method may also be a method of transmitting an uplink channel in a frequency hopping manner in multiple time slots. For differentiation, the manner of "transmitting uplink channels in a frequency hopping manner in multiple time slots" provided in the embodiments of the present application is hereinafter collectively referred to as a cross-time-slot frequency hopping transmission manner.

The terminal equipment can repeatedly transmit the uplink channel in a plurality of time slots, and the specific repeated transmission times N _repeat Configurable by a network device. For example, a network device may configure N _repeat Equal to 1, 2, 4 or 8, etc. When N is present _repeat When the number is greater than 1, the network device may further configure whether the uplink channel is transmitted in a frequency hopping manner, and also configure the uplink channel to be transmitted in a frequency hopping transmission manner within a time slot or in a frequency hopping transmission manner between time slots. Taking the uplink channel as the PUSCH as an example, the network device configures the PUSCH to be repeatedly transmitted in multiple slots, and configures the PUSCH to be transmitted in a transmission manner of frequency hopping within the slots. In addition, the network device may also indicate, through downlink signaling, whether the terminal device sends the PUSCH according to the configured frequency hopping transmission mode. For example, the network device may send DCI to the terminal device, and may instruct the terminal device to repeatedly send N in the configured frequency hopping transmission scheme by 1 bit in the DCI _repeat sub-PUSCH, or repeatedly transmitting N in a transmission mode without frequency hopping _repeat And (4) a secondary PUSCH.

It should be understood that transmitting the uplink channel 1 time in this embodiment may also be referred to as transmitting 1 uplink channel.

For example, if the uplink channel is PUCCH, the network device may configure the normal terminal device with resources for transmitting PUCCH and configure or indicate some parameters. And the normal terminal equipment transmits the PUCCH on the resources configured by the network equipment according to the parameters. For example, the network device may configure a first PUCCH resource (also referred to as a first PUCCH format) for the normal terminal device, and may be one of PUCCH format 0 to PUCCH format 4. The network device also configures or indicates parameters as shown in table 1 to assist the normal terminal device in transmitting PUCCH.

Table 1 parameters configured for normal terminal equipment

And the normal terminal equipment transmits the PUCCH on the first PUCCH resource according to the parameters shown in the table. It can be seen from table 1 that if the network device instructs a normal terminal device to transmit PUCCH in a frequency hopping manner, the network device also indicates a start symbol of the first hop of the PUCCH. As shown in table 1, for intra-slot frequency hopping, a normal terminal device may determine a start symbol of a second hop of the PUCCH according to a length of the PUCCH and a start symbol of a first hop of the PUCCH.

For example, please refer to fig. 6, which is a schematic diagram illustrating that the normal terminal device repeatedly transmits the PUCCH in the transmission manner of frequency hopping within the slot. FIG. 6 is a graph of N _repeat Equal to 2 is an example. As can be seen from table 1, the number of the starting symbol of the first hop of the PUCCH configured by the network device is S1, and assuming that the length of the PUCCH is L, the length L1 of the first hop of the PUCCH is equal to L1

The length L2 of the second hop of the PUCCH is

The number S2 of the starting symbol of the second hop of the PUCCH is

Please refer to fig. 7, which is another schematic diagram of the normal terminal device repeatedly transmitting the PUCCH in the intra-slot frequency hopping transmission mode. FIG. 7 shows the number of repeated transmissions N _repeat Length equal to 4,pucch is L for example. Since the PUCCH is transmitted in an intra-slot frequency hopping transmission, the preamble in L symbols is transmitted in each slotThe first hop of the PUCCH is transmitted in L1 symbols, and the second hop of the PUCCH is transmitted in L2 symbols of the L symbols. It should be understood that L1 in FIG. 7 is

L2 is that

The first symbol (also referred to herein as the starting symbol) occupied by the first hop of the PUCCH in each slot is numbered the same, as is the starting symbol occupied by the second hop of the PUCCH in each slot. As shown in fig. 7, in each slot, the number of the starting symbol occupied by the first hop of the PUCCH is S1, and the number of the starting symbol occupied by the second hop of the PUCCH is S2.

It should be understood that in this embodiment, the symbol numbers are renumbered at the beginning of each slot, with the first symbol in each slot numbered 0.

Fig. 6 and 7 take an example in which a normal terminal apparatus repeatedly transmits a PUCCH in a transmission scheme of frequency hopping within a slot. In some embodiments, the network device may configure the normal terminal device to repeatedly transmit the PUCCH in an inter-slot frequency hopping transmission. Please refer to fig. 8, which is a schematic diagram of normal terminal equipment repeatedly transmitting PUCCH in inter-slot frequency hopping transmission. FIG. 8 shows the number of repeated transmissions N _repeat Length equal to 4,pucch is L for example. Since the PUCCH is transmitted in a transmission mode of frequency hopping among time slots, the PUCCH is transmitted in L symbols in each time slot, and the frequency domain resources occupied by the two adjacent transmission PUCCHs are different. The number of the starting symbol occupied by the PUCCH in each slot is the same. As shown in fig. 8, the number of the starting symbol occupied by the PUCCH in each slot is S1.

Fig. 6 to 8 each take the example where the first hop of the PUCCH is transmitted in the mth slot. The determination of the time slot m is related to at least one of: the time slot d of the DCI transmitted by the network device, the time slot n of the PDSCH scheduled by the DCI transmitted by the network device, and the HARQ feedback time slot offset k indicated by the DCI are related. Taking DCI-scheduled PDSCH as an example, if the time slot of DCI-scheduled PDSCH transmitted by the network device is n, and the HARQ feedback time slot offset indicated by DCI is k, then m = n + k. For convenience of description, the terminal device transmits the PUCCH from the m-th slot is taken as an example hereinafter. Unless otherwise specified. It should be understood that the slot number corresponding to the mth slot may not be m. For example, if the slot numbers are renumbered at the beginning of each radio frame, and the first slot number at the beginning of each radio frame is 0, the corresponding slot number of the mth slot in the current radio frame is m-1.

Having described the network architecture and related terminology to which the embodiments of the present application are applicable, the following describes technical features related to the technical solutions provided by the embodiments of the present application.

The terminal equipment can adopt any one of the three transmission modes to transmit the uplink channel. That is, the terminal device may transmit the uplink channel by using any one of a non-frequency hopping transmission mode, an intra-slot frequency hopping transmission mode, and an inter-slot frequency hopping transmission mode. Generally, a terminal device performs downlink channel reception or uplink channel transmission in a frequency range not exceeding the maximum channel bandwidth of the terminal device. In this case, the terminal device does not need frequency tuning, as shown in fig. 9. The frequency domain resources occupied by the downlink channel reception or the uplink channel transmission in fig. 9 are shaded portions in fig. 9. In a possible scenario, the terminal device may be required to perform downlink channel reception or uplink channel transmission in a larger frequency range. For example, generally, a network device may configure a common PUCCH resource or a dedicated PUCCH resource for a terminal device to transmit a PUCCH. When the dedicated PUCCH resource is not configured, the terminal device may determine to send hybrid automatic repeat reQuest (HARQ) feedback (ACK) (HARQ-ACK) information for, for example, msg4 from one of a plurality of predefined or configured common PUCCH resource sets. If the first type terminal equipment and the second type terminal equipment exist, namely, normal terminal equipment and low-complexity terminal equipment exist. For a low complexity terminal device, because the bandwidth capability of the low complexity terminal device is limited, if the frequency domain span of the configured or predefined common PUCCH resource exceeds the maximum channel bandwidth supported by the low complexity terminal device, the low complexity terminal device needs to transmit PUCCH in a frequency range exceeding the maximum channel bandwidth of the terminal device in order to use the common PUCCH resource. This requires frequency tuning by the low complexity terminal device for receiving or transmitting information over a larger frequency range. As shown in fig. 10, when the low complexity terminal device performs uplink channel transmission in a frequency range exceeding the maximum channel bandwidth of the low complexity terminal device, the low complexity terminal device needs M symbols to perform frequency tuning. Since M symbols are used for frequency tuning, the transmission of the uplink channel cannot be transmitted at the tuning time of the M symbols, and therefore, due to frequency domain tuning, the terminal device needs to discard a part of the symbols, which are not transmitted, which may result in performance degradation of the uplink channel transmission of the low-complexity terminal device. It should be noted that the frequency tuning may also be considered as frequency switching or center frequency point switching.

It should be understood that the Msg4 can be understood as a contention resolution flag of the terminal device. In the random access process, for a physical downlink shared channel PDSCH carrying a contention resolution identity of a terminal device, the terminal device sends HARQ feedback information through a PUCCH. The Msg4 may also be understood as a message carried by the PDSCH.

The low complexity terminal device performs frequency tuning at the time of M symbols, which can also be understood as that the M symbols are knocked out and cannot transmit the uplink channel, but the normal terminal device can transmit the uplink channel at the M symbols, which cannot avoid interference of the low complexity terminal device to the normal terminal device. For example, N symbols are originally used for transmitting the uplink channel of a low complexity terminal device or a normal terminal device. For the low complexity terminal device, frequency tuning is performed by using M symbols of the N symbols, that is, the M symbols are dropped, so that the length of the orthogonal sequence used by the low complexity terminal device to transmit the uplink channel is changed from N to N-M. However, for a normal terminal device, the length of the orthogonal sequence used for transmitting the uplink channel is still N, and it is obviously impossible to ensure the orthogonality of the low-complexity terminal device and the normal terminal device for transmitting the uplink channel, which causes interference to the normal terminal device for transmitting the uplink channel, resulting in performance degradation of the normal terminal device for transmitting the uplink channel.

In view of this, the embodiments of the present application provide four new transmission modes of an uplink channel, so that even if a low-complexity terminal device performs downlink channel reception or uplink channel transmission in a frequency range exceeding the maximum channel bandwidth of the low-complexity terminal device, performance degradation of the low-complexity terminal device in transmitting the uplink channel can be reduced. And the interference of the low-complexity terminal equipment on downlink channel receiving or uplink channel sending of the normal terminal equipment can be reduced, and the reduction of the channel transmission performance of the normal terminal equipment is avoided as much as possible.

Any one of the new transmission modes of the uplink channel provided in the embodiments of the present application is to transmit the uplink channel in a frequency hopping manner in one or more time units. In addition, when the uplink channel is transmitted in a frequency hopping manner in a plurality of time units, the four new transmission manners of the uplink channel provided in the embodiment of the present application may be referred to as a time unit-crossing frequency hopping transmission manner. Taking the time unit as a time slot as an example, the time-unit-crossing frequency hopping transmission mode is also called a time-slot-crossing (cross-slot) frequency hopping transmission mode. For convenience of description, a time unit is taken as an example, and the four new uplink channel transmission modes provided in the embodiment of the present application are referred to as a first transmission mode, a second transmission mode, a third transmission mode, and a fourth transmission mode.

The first transmission method, the second transmission method, the third transmission method, and the fourth transmission method provided in the embodiments of the present application are respectively described below. Hereinafter, the uplink channel is PUCCH as an example unless it is indicated to be PUSCH. In addition, the number of symbols of the PUCCH is L, the number of symbols of a first hop of the PUCCH is L1, the number of symbols of a second hop of the PUCCH is L2, wherein L1+ L2= L,

for example, unless otherwise specified. The terminal device is denoted by N to perform frequency tuning within N symbols unless otherwise specified.

N may indicate the number of symbols or the maximum number of symbols that can be used for frequency tuning when transmitting the uplink channel within a range exceeding the first bandwidth threshold. The N can be pre-configured by the network equipment, predefined by a protocol and/or determined according to the capability information/auxiliary information reported by the terminal equipment. The "number of symbols that can be used or the maximum number of symbols" may be the number of symbols indicated by the network device, e.g. the number of symbols preconfigured for frequency tuning is 5, then the "maximum number of symbols that can be used" is 5. It should be understood that the number of symbols actually required by the terminal device for frequency tuning may be less than N, or just N, or may not be an integer number of symbols. The number of symbols actually required by the terminal device for frequency tuning may also be greater than N. For example, the network device indicates that the number of symbols for frequency tuning is 14, but the number of symbols for frequency tuning actually required by the terminal device is 16. In this document, the number of time units is P, and since the time unit is a time slot, P =14.

It should be understood that the first bandwidth threshold may be a maximum transmission bandwidth supported by the terminal device. In some cases, the first bandwidth threshold may also be smaller than the maximum transmission bandwidth supported by the terminal device, as long as the terminal device needs to perform frequency tuning when transmitting the uplink channel within a range exceeding the first bandwidth threshold.

The first transmission mode is as follows: and sending the first hop of the uplink channel in the mth time slot, and sending the second hop of the uplink channel in the (m + h) th time slot. The last symbol in the symbols of the first hop for transmitting the uplink channel is separated from the first symbol in the symbols of the second hop for transmitting the uplink channel by X symbols, wherein X =14 × n, and n is a positive integer. It can also be considered that X symbols are spaced between the end symbol of the first hop for transmitting the uplink channel and the start symbol of the second hop for transmitting the uplink channel, and X is an integer multiple of 14. m and h are both positive integers. It should be understood that the first hop of the uplink channel and the second hop of the uplink channel belong to the same uplink channel, that is, one uplink channel is transmitted in the mth time slot and the m + h time slot. It should be noted that, in the "X symbols spaced between the last symbol in the symbol of the first hop of the uplink channel and the first symbol in the symbol of the second hop of the uplink channel", the X symbols do not include the last symbol in the symbol of the first hop of the uplink channel and the first symbol in the symbol of the second hop of the uplink channel.

Illustratively, if X symbols are specified to be spaced between the end symbol of the first hop for transmitting the uplink channel and the start symbol of the second hop for transmitting the uplink channel, X may be predefined or configured by the network device, or indicated by the network device through dynamic signaling. For example, the network device indicates by DCI that X is 14 or 28. If it is specified to transmit the end symbol of the first hop of the uplink channel to transmit the start symbol of the second hop of the uplink channel with a spacing of 14 × n symbols, n may be predefined, or configured by the network device, or indicated by the network device through dynamic signaling. For example, the network device indicates by DCI that n is 1, then X is 14; the network device indicates by DCI that n is 2, then X is 28, and so on.

Since the first transmission mode provides a certain number of symbols between the first hop and the second hop of the uplink channel, for the low complexity terminal device, even if the uplink channel reception or the uplink channel transmission is performed in a frequency range exceeding the maximum channel bandwidth of the low complexity terminal device, the frequency tuning can be performed in the certain number of symbols, so that the decrease of the uplink channel transmission performance of the low complexity terminal device can be reduced.

For example, once the network device configures the common PUCCH resource, the starting symbol and symbol length of the PUCCH resource in the slot are determined, and the candidate frequency domain location corresponding to the PUCCH resource is also determined. And the common PUCCH resource is shared by all terminal devices, that is, the common PUCCH resource is shared by the normal terminal device and the low complexity terminal device. For normal terminal equipment, the PUCCH may be transmitted according to the frequency domain resource location indicated by the network equipment. In order to enable the low complexity terminal device to multiplex the common PUCCH resource with the normal terminal device, in this embodiment of the application, the low complexity terminal device transmits the PUCCH in the first transmission mode when transmitting the PUCCH in a frequency range exceeding the maximum channel bandwidth of the low complexity terminal device. That is, one PUCCH is transmitted in a frequency hopping manner in a plurality of slots, and X symbols are spaced between a first hop of the PUCCH and a second hop of the PUCCH. For the low complexity terminal device, even if the PUCCH reception or PUCCH transmission is performed in a frequency range exceeding the maximum channel bandwidth of the low complexity terminal device, the frequency tuning can be performed within the X symbols without affecting the transmission and/or reception of the PUCCH, so that the degradation of the PUCCH transmission performance of the low complexity terminal device can be reduced.

In addition, since X =14 × n, the low complexity terminal device can determine that the number of the start symbol of the second hop of the PUCCH is the same as the number of the start symbol of the second hop when the normal terminal device transmits the PUCCH with the intra-slot frequency hopping transmission scheme. Therefore, the network equipment can uniformly configure the public PUCCH resources (formats) through the system messages without configuring the single PUCCH formats for the low-complexity terminal equipment separately, and the signaling overhead and the resource overhead can be reduced. For example, PUCCH resources are configured for the terminal device along with the current PUCCH format, the candidate PUCCH symbol position of each slot remains unchanged, which can reduce resources used for transmitting PUCCH, and also does not occupy resources allocated to other terminal devices.

For convenience of understanding, please refer to fig. 11, which is a schematic diagram of time-frequency resources used by a low-complexity terminal device to transmit a PUCCH according to an embodiment of the present application. Fig. 11 illustrates X =14, and "X" in fig. 11 indicates no transmission. In fig. 11, PUCCH is illustrated to be transmitted in a frequency hopping manner in slot m, and PUCCH is illustrated to be transmitted in a frequency hopping manner in slot m and slot m +1. As shown in fig. 11, in general, the network device configures, for the terminal device, what frequency hopping scheme the PUCCH is transmitted in, and configures a number of a start symbol of a first hop of the PUCCH, for example, S1. If the network device does not configure the PUCCH to transmit in any frequency hopping manner, for example, the normal terminal device may transmit the PUCCH in a frequency hopping transmission manner within the slot before the terminal device obtains the dedicated PUCCH configuration. The network device is assumed to configure the terminal device to transmit the PUCCH in the intra-slot frequency hopping transmission mode, where the length of the PUCCH is L symbols. It can be seen that the length of the first hop of the PUCCH is L1, the length of the second hop of the PUCCH is L2, and the number S2 of the start symbol of the second hop of the PUCCH is S1+ L1. For a normal terminal device, the PUCCH is transmitted in a frequency hopping manner in slot m, that is, a first hop of the PUCCH is transmitted in L1 symbols from a start symbol S1 and a second hop of the PUCCH is transmitted in L2 symbols from a start symbol S2 in slot m. For a low complexity terminal device, the low complexity terminal device may determine to transmit the PUCCH in the first transmission mode, i.e., one PUCCH is transmitted in two slots. As shown in fig. 11, a first hop of the PUCCH is transmitted L1 symbols consecutively from a start symbol S1 in an m-th slot, and a second hop of the PUCCH is transmitted L2 symbols consecutively from a start symbol S2 in an m + 1-th slot. As can be seen from fig. 11, the first and second hops are separated by 14 symbols, then the starting symbol S2 at slot m +1 is the same as the starting symbol S2 at the second hop of slot m. The low complexity terminal device may determine the number of the starting symbol of the second hop along with the configuration that the normal terminal device frequency hops to transmit the PUCCH within the slot. It is to be understood that when X =14, h =1.

For another example, please refer to table 2, which shows PUCCH resource configuration and parameters of normal terminal device and low complexity terminal device for transmitting PUCCH.

TABLE 2

As can be seen from table 2, the network device may uniformly configure a common PUCCH resource for the low complexity terminal device and the normal terminal device through the PUCCH format. And the low-complexity terminal equipment transmits the PUCCH in a first transmission mode, and the normal terminal equipment transmits the PUCCH in a frequency hopping transmission mode in a time slot. The starting symbol S1 of the first hop of the PUCCH sent by the low-complexity terminal equipment and the normal terminal equipment is the same, and the starting symbol S2 of the second hop of the PUCCH sent by the low-complexity terminal equipment and the normal terminal equipment is the same, so that PUCCH parameters configured for the normal terminal equipment by the network equipment can be used, PUCCH resources, more PUCCH parameters and the like do not need to be configured for the low-complexity terminal equipment independently, and signaling overhead can be saved.

It should be understood that the time (in seconds/milliseconds/microseconds) required for the frequency tuning of the general terminal equipment is not changed by the SCS, but if the SCS is large, the number of symbols required for the frequency tuning of the low complexity terminal equipment is large when the low complexity terminal equipment transmits the PUCCH in a frequency range exceeding the maximum channel bandwidth supported by the low complexity terminal equipment; in contrast, if the SCS is small, the number of symbols required for frequency tuning by the low complexity terminal device is small when the low complexity terminal device transmits the PUCCH in a frequency range exceeding the maximum channel bandwidth supported by the low complexity terminal device. Generally, frequency tuning only requires switching frequency points, so that the time required for frequency tuning is short. For example, the minimum duration required for frequency tuning is about 50 microseconds, and the maximum duration is typically about 200 microseconds. For ease of understanding, please refer to table 3, which shows the corresponding relationship between the SCS size and the number of symbols required for frequency tuning by the low complexity terminal device. Table 3 exemplifies that the time period required for frequency tuning is 140 microseconds.

TABLE 3

As can be seen from table 3, if the SCS is greater than 120KHz, the time required for the terminal device to perform frequency tuning is equivalent to a length of 16 symbols. In this case, it is obvious that X =14 also reduces the performance of the low complexity terminal device for transmitting PUCCH. Therefore, in the implementation of the present application, the value of X may be determined according to the size of SCS. SCS is smaller, X is correspondingly smaller, thus resource overhead can be reduced, and the sending time delay of PUCCH can be reduced; SCS is larger and X is correspondingly larger to allow sufficient time for the terminal equipment to frequency tune. Therefore, the problem that the terminal equipment does not have enough time to perform frequency tuning, so that part of symbols in the PUCCH need to be knocked out when the low-complexity terminal equipment sends the PUCCH, and the performance of the low-complexity terminal equipment for sending the PUCCH is influenced can be avoided.

In the embodiment of the present application, the value of X is determined according to the size of SCS, and the three cases are described below.

In case one, SCS is less than the first threshold, then X equals 14.

Case two, SCS is greater than or equal to the first threshold, then X is greater than or equal to 28.

It should be noted that the first threshold may be determined according to a time period required for the terminal device to perform frequency tuning. The first threshold is predefined or configured. Along the example in table 3, the time length required for the terminal device to perform frequency tuning is 140us, and the first value can be determined to be 120KHz by converting to the number of corresponding symbols under each SCS. Namely SCS is less than 120KHz, X =14; SCS is greater than or equal to 120khz and X is greater than or equal to 28, as shown in fig. 12, with X =28 for example in fig. 12. Table 3 is merely an example, in some embodiments, SCS is larger, and the value of X may also be correspondingly larger, for example, 42.

It should be understood that when the SCS is larger, X is also adaptively increased, which, although enough time can be left for the terminal equipment to perform frequency tuning, brings PUCCH transmission delay. To reduce latency, in some embodiments, X may be equal to 14 even though the SCS is greater than or equal to the first threshold. In this case, the minimum number of symbols of the PUCCH supported by the low complexity terminal device can be defined, and even if X =14, the reliability of transmission of the PUCCH by the low complexity terminal device can be ensured as much as possible by ensuring that the ratio of symbols discarded by the low complexity terminal device due to frequency tuning to the number of symbols of the PUCCH is small as possible.

In case three, the SCS is greater than or equal to the first threshold, the number of symbols of the PUCCH is greater than or equal to the second threshold, and X =14. The second threshold may be determined according to a condition that a ratio of symbols discarded by the low-complexity terminal device due to frequency tuning to the number of symbols in the PUCCH is satisfied. For example, the ratio of the symbols discarded by the low complexity terminal device due to frequency tuning to the number of symbols in the PUCCH needs to be less than or equal to 50%, and then the second threshold may be equal to 4. The second threshold may also be considered as the minimum number of symbols for transmitting the uplink channel. Taking the SCS equal to 120KHz as an example, it can be known from table 3 that 16 symbols are needed for frequency tuning by the low complexity terminal device, and when X =14, it means that 2 symbols are needed to be dropped for PUCCH transmission by the low complexity terminal device. When the minimum number of symbols of the PUCCH supported by the low complexity terminal device is defined to be equal to 4, the number of symbols discarded by the low complexity terminal device due to frequency tuning is less than or equal to 50% of the number of symbols of the PUCCH. The second threshold may be predefined or configured, or the maximum proportion of the symbols discarded by the low-complexity terminal device due to frequency tuning to the number of symbols of the PUCCH may be predefined or configured, for example, the maximum proportion is defined to be 50% or 20%.

The second transmission mode is as follows: and sending a first hop of the uplink channel in the mth time slot, and sending a second hop of the uplink channel in the m + h time slot, wherein X symbols are separated between the last symbol in the symbols used for sending the first hop and the first symbol in the symbols used for sending the second hop, X is a positive integer, m is a positive integer, and h is greater than or equal to 0. Wherein X is related to SCS. Or, X is related to the number L of symbols of the uplink channel and the number of symbols or the maximum number N of symbols that can be used by the terminal device for frequency tuning when transmitting the uplink channel within the range exceeding the first bandwidth threshold. Alternatively, X is related to SCS as well as L and N. It should be understood that the first hop of the uplink channel and the second hop of the uplink channel belong to the same uplink channel, that is, one uplink channel is transmitted in the mth time slot and the m + h time slot.

The second transmission scheme is the same as the first transmission scheme in that one PUCCH is transmitted in one or more slots in a frequency hopping manner, and X symbols are spaced between a first hop of the PUCCH and a second hop of the PUCCH. For the low complexity terminal device, even if the PUCCH reception or PUCCH transmission is performed in a frequency range exceeding the maximum channel bandwidth of the low complexity terminal device, the frequency tuning can be performed within the X symbols without affecting the PUCCH transmission and/or PUCCH reception, so that the degradation of the PUCCH transmission performance of the low complexity terminal device can be reduced.

The difference from the first transmission scheme is that in the second frequency hopping transmission scheme, X may be smaller than 14, so that the first hop of the PUCCH and the second hop of the PUCCH may be located in the same slot, i.e., h =0.X may not be an integer multiple of 14.

As an example, in the embodiment of the present application, X may be determined according to L and N, so as to reduce the time delay for sending the PUCCH as much as possible, and save resource overhead as much as possible, which is more flexible. The relationship between L, N and X is as follows.

Case four, when L + N is less than or equal to 14, X = N or X is greater than N. It should be understood that the sum of L and X is less than or equal to 14, and then only X symbols need to be left for the terminal device for frequency tuning, which can both ensure that the terminal device has enough time to perform frequency tuning and does not affect the performance of the terminal device for transmitting PUCCH. In addition, the first hop of the PUCCH and the second hop of the PUCCH can also be positioned in the same time slot, so that the increase of the PUCCH time delay can be avoided.

For easy understanding, please refer to fig. 13, which is a schematic diagram of time-frequency resources for transmitting PUCCH for a low complexity terminal device. Fig. 13 exemplifies that L + N is smaller than 14. As can be seen from fig. 13, when L + N is less than 14, if X is greater than or equal to 14, it is obvious that the delay for transmitting PUCCH is reduced. Therefore, in this case, X may be greater than or equal to N, which may ensure that the terminal device has enough time to perform frequency tuning, may not affect the performance of the terminal device for transmitting the PUCCH, and may reduce the time delay for transmitting the PUCCH as much as possible. It should be understood that, in fig. 13,

l2= L-L1. Note that, when X = N, the second transmission scheme actually transmits one PUCCH in one slot. The difference from the current intra-slot frequency hopping transmission mode is that the interval between the first hop of the PUCCH and the second hop of the PUCCH is X symbols.

Case five, when L + N is greater than 14, X is greater than or equal to 14n, N is a positive integer. It should be understood that the sum of L and N is greater than 14, or the time length required for the terminal device to perform frequency tuning is long, or the number L of symbols of the uplink channel is large. In order to ensure that the terminal device has enough time for frequency tuning, the embodiment of the present application may set X =14 × n, or X is greater than 14 × n.

For easy understanding, please refer to fig. 14, which is a schematic diagram of time-frequency resources for transmitting PUCCH for low-complexity terminal equipment. Fig. 13 illustrates that L + N is greater than 14. When L + N is greater than 14, if X is less than 14, the terminal device may not be guaranteed to have enough time for frequency tuning, which may cause the terminal device to drop part of symbols of the PUCCH when transmitting the PUCCH, thereby affecting the performance of transmitting the PUCCH. For this reason, in this case, the embodiment of the present application may determine that X is greater than or equal to 14 × n, so as to ensure that the terminal device has enough time to perform frequency tuning. As shown in fig. 14, fig. 14 exemplifies n =1. It should be understood that specific implementation and beneficial effects of X =14 × n can be referred to the description of the related contents in the foregoing first transmission manner, and are not described herein again. In the case that X is greater than 14 × n, the embodiment of the present application may define or configure X =14n + s, s as a positive integer in advance.

In case six, when L + N is greater than 14 × s and L + N is less than or equal to 14 × (s + 1), X is greater than or equal to 14 × s, and s is a positive integer.

It is understood that if the sum of L and N is greater than 14 × s, and less than 14 × (s + 1). In order to allow sufficient time for the terminal device to perform frequency tuning, it may be determined that X is greater than or equal to 14 × s. Similarly, the specific implementation and beneficial effects of X =14 × s can be referred to the description of the related contents in the foregoing first transmission manner, and are not described herein again. In the case that X is greater than 14s, the embodiment of the present application may pre-define or configure X =14s + s, s is a positive integer.

As another example, the network device may configure X. For example, the network device may broadcast a system message that may carry a value of X. Thus, the values of X corresponding to different terminal devices are the same. Of course, the network device may also configure X for each terminal device; or, the network device may also configure X with the same value for the first type of terminal device, and configure X with the same value for the second type of terminal device. Still alternatively, the network device may also configure X for each cell, either BWP or SCS separately. Wherein each cell may correspond to one candidate value or multiple candidate values of X, and similarly, each BWP may correspond to one candidate value or multiple candidate values of X; each SCS may correspond to one candidate value or multiple candidate values for X.

As yet another example, X may be predefined, e.g., one candidate value for X is predefined for each cell, or BWP or each SCS. Alternatively, multiple candidates for X are predefined for each cell, BWP, or each SCS. When a plurality of candidate values of X are predefined, the network device may select one candidate value from the plurality of candidate values and inform the terminal device to transmit the PUCCH using the candidate value. Or, the terminal device may select one candidate value from the multiple candidate values according to the reported capability information or the reported auxiliary information, send the PUCCH using the candidate value, and notify the network device of the candidate value.

The correspondence of the candidate values of SCS and the candidate values of X may be predefined, for example, table 4. If one candidate value of the SCS corresponds to multiple candidate values of X, the network device may select one candidate value from the multiple candidate values to inform the low-complexity terminal device to send the PUCCH according to the selected candidate value. Or the low-complexity terminal device may also report capability information or auxiliary information to select one candidate value from the multiple candidate values and inform the network device of the selected candidate value, so as to send the PUCCH according to the candidate value, which is more flexible. For example, the low complexity terminal device selects a candidate value from the multiple values according to its own capability.

Table 4 (the value in the table indicates the number of symbols)

SCS	X1	X2 (corresponding to 1 ms)
			15KHz	2	14
30KHz	4	28
			60KHz	8	56
120KHz	16	112

For table 4, the network device may use 1 bit to indicate whether X is X1 or X2, or the terminal device reports the capability information indicating whether X1 or X2. It should be understood that once X1 or X2 is determined, the X value corresponding to each SCS is determined.

It should be understood that the N may also be predefined, or preconfigured. As described above, in the case where N is defined, the X is determined according to N and according to a certain rule, or the X is determined according to the configuration of the network device.

For example, N may be predefined, e.g., one candidate value for N per cell, or BWP or per SCS. Alternatively, multiple candidates for N are predefined for each cell, BWP, or each SCS. When a plurality of candidate values of N are predefined, the network device may select one candidate value from the plurality of candidate values and inform the terminal device to use the candidate value. Alternatively, the terminal device may report the capability information or the auxiliary information to select one candidate value from the plurality of candidate values, notify the network device of the selected candidate value, and use the selected candidate value.

The correspondence of the candidate values of SCS and the candidate values of N may be predefined, for example, table 5.

The network device may use 1 bit to indicate whether N is N1 or N2, or the terminal device reports the capability information indicating whether N1 or N2. It should be understood that once N1 or N2 is determined, the corresponding N value for each SCS is determined.

Table 5 (the value in the table indicates the number of symbols)

SCS	N1	N2 (corresponding to 1 ms)
			15KHz	2	14
30KHz	4	28
			60KHz	8	56
120KHz	16	112

For example, please refer to fig. 15, which is a schematic diagram of time-frequency resources for transmitting uplink channels by a low complexity terminal device. And the low-complexity terminal equipment transmits a first hop of the first PUCCH in a first frequency domain resource in a time slot m, and transmits a second hop of the first PUCCH in a second frequency domain resource after an interval of X symbols. It should be understood that in fig. 15, the length of the uplink channel is L, then

L2＝L-L1。

If X is predefined or network configured, the end symbol of the previous hop and the start symbol of the next hop between two adjacent hopping frequencies are spaced by X symbols, considering that the terminal device may repeatedly transmit PUCCH. The number of the symbols of the X can be close to the number of the symbols of the terminal equipment for frequency tuning as much as possible, so that the increase of time delay can be avoided as much as possible on the premise of ensuring that the terminal equipment carries out frequency tuning at certain intervals.

For example, please refer to fig. 16, which is a schematic diagram of time-frequency resources for transmitting an uplink channel by a low complexity terminal device. The low complexity terminal equipment sends a first hop of a first PUCCH in a first frequency domain resource in a time slot m, and sends a second hop of the first PUCCH in a second frequency domain resource after an interval of X symbols; and then, the first hop of the PUCCH for the second time is sent by the first frequency domain resource at an interval of X symbols, then, the second hop of the PUCCH for the second time is sent by the second frequency domain resource at an interval of X symbols, and so on. It should be understood that in fig. 16, the length of the uplink channel is L, then

L2＝L-L1。

The first transmission mode and the second transmission mode both stipulate that X symbols are spaced between the first hop of the uplink channel and the second hop of the uplink channel. As an alternative to the first transmission mode and the second transmission mode, an embodiment of the present application provides a third frequency transmission mode. The third transmission mode specifies a relationship between the number of the start symbol of the first hop of the uplink channel and the number of the start symbol of the second hop of the uplink channel. The low complexity terminal device may determine the number of the starting symbol of the second hop of the uplink channel according to the relationship between the number of the starting symbol of the first hop of the uplink channel and the number of the starting symbol of the second hop of the uplink channel, and send the uplink channel.

For example, the third transmission mode is: and transmitting a first hop of the uplink channel by using L1 symbols in the mth time slot, and transmitting a second hop of the uplink channel by using L2 symbols in the m + h time slot. The first hop of the uplink channel and the second hop of the uplink channel belong to the same uplink channel, that is, one uplink channel is transmitted in the mth time slot and the m + h time slot. Wherein, the number of the first symbol in the L1 symbols is S1, the number of the first symbol in the L2 symbols is S2, and S2 and S1 satisfy any one of the following relations:

1) S2= S1. I.e. the number of the starting symbol of the second hop of the uplink channel is the same as the number of the starting symbol of the first hop of the uplink channel.

In this case, there is a 14-L1 symbol interval between the end symbol of the first hop of the uplink channel and the start symbol of the second hop of the uplink channel. Since 14-L1 symbols are spaced between the end symbol of the first hop of the uplink channel and the start symbol of the second hop of the uplink channel, even if the low complexity terminal device transmits the uplink channel in a range exceeding the first bandwidth threshold, frequency tuning can be performed on the 14-L1 symbols, thereby reducing the degradation of the transmission performance of the uplink channel of the low complexity terminal device.

2)S2＝S1+L1。

In this case, there is a 14-symbol interval between the end symbol of the first hop of the uplink channel and the start symbol of the second hop of the uplink channel. Therefore, even if the low-complexity terminal equipment transmits the uplink channel in the range exceeding the first bandwidth threshold, the frequency tuning can be carried out on the 14 symbols, and the reduction of the transmission performance of the uplink channel of the low-complexity terminal equipment is reduced. In addition, since 14 symbols are spaced between the end symbol of the first hop of the uplink channel and the start symbol of the second hop of the uplink channel, the low complexity terminal device may determine that the number of the start symbol of the second hop of the PUCCH is the same as the number of the start symbol of the second hop when the normal terminal device transmits the PUCCH using the intra-slot frequency hopping transmission scheme. Therefore, the network equipment can uniformly configure the public PUCCH resources (formats) through the system messages without configuring the single PUCCH formats for the low-complexity terminal equipment separately, and the signaling overhead and the resource overhead can be reduced. For example, PUCCH resources are configured for the terminal device along with the current PUCCH format, then the candidate PUCCH symbol position of each slot remains unchanged, which is more compatible with the prior art.

3)S2＝S1-L1。

In this case, the interval between the end symbol of the first hop of the uplink channel and the start symbol of the second hop of the uplink channel is 14-2 × L1. Since 14-2 × L1 symbols are spaced between the end symbol of the first hop of the uplink channel and the start symbol of the second hop of the uplink channel, even if the low complexity terminal device transmits the uplink channel in a range exceeding the first bandwidth threshold, frequency tuning can be performed on the 14-2 × L1 symbols, thereby reducing degradation of the transmission performance of the uplink channel of the low complexity terminal device. In addition, the interval between the end symbol of the first hop of the uplink channel and the start symbol of the second hop of the uplink channel is 14-2 × L1 symbols, that is, the interval is as few as possible, so as to reduce the time delay for transmitting the uplink channel.

It should be appreciated that in order to try to ensure that low complexity terminal devices have sufficient time to perform frequency tuning, the delay in transmitting the uplink channel is tried to be reduced. In addition, for flexibility of scheduling resources by the network device, when the terminal device transmits the uplink channel, one candidate value may be selected from the 3 candidate values of S2. For example, for a certain SCS, the terminal device may determine from the multiple candidate value sets of S2, from which candidate value set to select one candidate value of S2, according to L and N, which is more flexible. For example, S2 may be selected from a set of candidate values, which may be [ S1+ L1, S1-L1], or [ S1+ L1, S1] or [ S1, S1-L1], or [ S1, S1-L1]. In the embodiment of the present application, the terminal device selects one or more candidate value sets from the plurality of candidate value sets, and there may be the following three cases.

The one or more candidate value sets may be predefined by a protocol, or preconfigured by the network device, or determined according to terminal device reporting capability information/assistance information. Once the set of one or more candidate values is determined, which candidate value is specifically used may be preconfigured or dynamically indicated by the network device, or an available set of candidate values may be determined from the set of one or more candidate values according to a predefined rule and then an element may be indicated from the available set of candidate values according to the dynamic indication.

In the embodiment of the present application, taking an available candidate value set (also referred to as a first set in the text) as [ S1, S1+ L1, S1-L1], how the terminal device determines the available candidate value set from the first set is described as follows, and there may be the following three cases.

Seventh, if 14-L1 is less than N, then the sum of L1 and N is greater than 14. In this case, it is considered that the time required for the terminal device to perform frequency tuning is long or the number L of symbols of the uplink channel is large. To ensure that the terminal device has enough time to perform frequency tuning, the embodiment of the present application may determine S2= S1+ L1, i.e. the set of available candidates includes only one element. That is, the interval between the end symbol of the first hop of the uplink channel and the start symbol of the second hop of the uplink channel is X symbols, and X =14 × n.

In case eight, if 14-2 × L1 is greater than or equal to N, that is, the sum of L and N is less than or equal to 14. In this case, all three candidate values of S2 may satisfy that N symbols are left between two adjacent hops for frequency tuning. Therefore, the terminal equipment can be guaranteed to have enough time for frequency tuning, and the influence on the performance of PUCCH transmission of the terminal equipment is reduced. Thus, the available candidate value set includes the 3 candidate values. The embodiment of the application can select an element from [ S1, S1+ L1, S1-L1] as S2, i.e., S2= S1, or S2= S1+ L1, or S2= S1-L1, which increases the flexibility of network equipment in scheduling resources.

In case nine, if 14-L1 is greater than or equal to N, and 14-2 XL 1 is less than N. In this case, only S2= S1 and S2= S1+ L1 of the three candidates for S2 satisfy that N symbols are left between two adjacent hops for frequency tuning. Thus, the available candidate set includes 2 candidates: [ S1+ L1, S1]. In the embodiment of the present application, one element may be selected from [ S1+ L1, S1] as S2. I.e. S2= S1 or S2= S1+ L1. Therefore, the terminal equipment can be preferentially ensured to have enough time for frequency tuning, and the influence on the performance of PUCCH transmission of the terminal equipment can also be reduced.

It should be noted that the start symbol of the second hop of the uplink channel may correspond to multiple time domain resource candidate positions, for example, the first hop of the uplink channel is located in time slot m, and the start symbol of the second hop of the uplink channel may be located in time slot m +1, or may be located in time slot m +2. Then the candidate positions for the start symbol of the second hop of the uplink channel may include 3 time domain positions corresponding to S2 of slot m +1 and 3 time domain positions corresponding to S2 of slot m +2, for a total of 6 positions. For convenience of description, 3 time domain positions corresponding to S2 of the slot m +1 may be referred to as S21, S22, and S23, respectively, and then S21= S1, S22= S1+ L1, and S23= S1-L1. Similarly, the 3 time domain positions corresponding to S2 of slot m +2 are referred to as S24, S25, and S26, respectively, and then S24= S1, S25= S1+ L1, and S26= S1-L1.

In this case, 14-L1 is smaller than N, and S2 may be an element in [ S22, S24, S25, S26], i.e., S2= S21 or S2= S24. Similarly, 14-2 × L1 is greater than or equal to N, S2 can be an element in [ S21, S22, S23, S24, S25, S26 ]; 14-L1 is greater than or equal to N, and 14-2 XL 1 is less than N, S2 may be an element in [ S21, S22, S24, S25, S26 ].

The foregoing first transmission manner, second transmission manner, and third transmission manner are intended to specify a certain number of symbols between a first hop of an uplink channel and a second hop of the uplink channel, for an application scenario where a low-complexity terminal device sends one uplink channel in a range exceeding a first bandwidth threshold. That is, the time for performing frequency tuning is reserved for the low-complexity terminal device, and the decrease of the transmission performance of the uplink channel due to the frequency tuning when the low-complexity terminal device transmits the uplink channel in the range exceeding the first bandwidth threshold is reduced as much as possible.

In a possible scenario, the network device configures a normal terminal device to repeatedly transmit an uplink channel for multiple times, and the network device configures a low-complexity terminal device to transmit an uplink channel once, that is, to transmit one uplink channel. For example, the network device configures a first PUCCH resource for a normal terminal device, and configures or indicates parameters as shown in table 1. The network device configures the second PUCCH resource for the low complexity terminal device, for example, the network device configures the second PUCCH format for the low complexity terminal device. The network device configures the low complexity terminal device with parameters such as those shown in table 6-1.

TABLE 6-1 partial parameters for low complexity terminal device configuration

Although the maximum bandwidth capability of the low-complexity terminal device is smaller, in order that the low-complexity terminal device can also obtain larger frequency domain frequency hopping gain and improve the efficiency of resource utilization, the network device can configure the same frequency domain resource for the low-complexity terminal device and the normal terminal device. For example, the network device configures the same BWP for the low complexity terminal device and the normal terminal device. For another example, the BWPs configured by the network device for the low complexity terminal device and the normal terminal device are different, but the frequency domain resources configured by the network device for the low complexity terminal device are the same as the frequency domain resources configured by the network device for the normal terminal device. Referring to table 6-2, frequency domain parameters configured by the network device for the low complexity terminal device are shown.

TABLE 6-2 frequency domain parameters configured for low complexity terminal devices

When the low-complexity terminal device and the normal terminal device coexist, the low-complexity terminal device may still transmit the PUCCH by using the first transmission method, the second transmission method, or the third transmission method as described above. Of course, the low complexity terminal device may also transmit the PUCCH by using a transmission method of frequency hopping within a time slot. For example, the network device may configure the low complexity terminal device with the parameters of the transmission scheme as shown in tables 6-3.

TABLE 6-3 parameters for transmission modes configured for low complexity terminal equipment

Generally, different time-frequency resources occupied by different terminal devices reduce mutual interference between the terminal devices, so as to improve the performance of uplink transmission as much as possible. Of course, when the time-frequency resources occupied by the uplink transmissions of the two terminal devices are the same, the interference between the terminal devices can also be reduced in a code division multiplexing manner. In order to better share PUCCH resources between low complexity terminal equipment and normal terminal equipment, it is considered that the low complexity terminal equipment and the normal terminal equipment coexist to save resource overhead. In the embodiment of the application, the low-complexity terminal equipment and the normal terminal equipment can be prevented from occupying the same time-frequency resource as much as possible. For example, the network device configures the normal terminal device to transmit PUCCH in slot m or slot m +1 and instructs the low complexity terminal device to transmit PUCCH using the second PUCCH resource. The time domain resource corresponding to the second PUCCH resource includes slot m and slot m +1. Since the normal terminal device sends the PUCCH in the configured frequency domain resource in the slot m and the slot m +1, the low complexity terminal device and the normal terminal device may use different frequency resources in order to avoid overlapping of the time frequency resources of the low complexity terminal device and the normal terminal device.

In a possible implementation manner, the network device may configure the starting frequency domain positions of the first hops of the PUCCHs to be transmitted by the normal terminal device and the low complexity terminal device to be different, and configure the starting frequency domain positions of the second hops of the PUCCHs to be transmitted by the normal terminal device and the low complexity terminal device to be different. And the starting frequency domain position of the first hop of the PUCCH of the normal terminal equipment is the same as the starting frequency domain position of the second hop of the PUCCH of the low complexity terminal equipment, and the starting frequency domain position of the second hop of the PUCCH of the normal terminal equipment is the same as the starting frequency domain position of the first hop of the PUCCH of the low complexity terminal equipment. The time domain position of the first hop of the PUCCH of the normal terminal equipment can be the same as the time domain position of the first hop of the PUCCH of the low-complexity terminal equipment, so that the resource overhead can be saved.

For example, the network device configures the normal terminal device to transmit the PUCCH in the intra-slot frequency hopping transmission mode, and the number of times N that the PUCCH is transmitted _repeat Is greater than 1. The network device configures a starting PRB number of a first PUCCH resource, for example, a first PRB, and configures a starting PRB number of a second hop of frequency hopping transmission of the first PUCCH resource, for example, a second PRB. The network device configures the low complexity terminal device to transmit the PUCCH in a cross-slot frequency hopping transmission mode (e.g., a first transmission mode, a second transmission mode, or a third transmission mode). NetAnd the network equipment configures the starting PRB number of the second PUCCH resource as the second PRB, and configures the starting PRB number of the second hop of the frequency hopping sending of the second PUCCH resource as the first PRB.

As an alternative, the network device may configure the same PUCCH resource for all terminal devices, and the starting PRB number of the first PUCCH resource and the starting PRB number of the second hop of the frequency hopping transmission of the first PUCCH resource. The normal terminal device may transmit the PUCCH with the configuration of the network device. For a low complexity terminal device, the network device may further dynamically indicate a starting PRB number of the second PUCCH resource and a starting PRB number of a second hop for frequency hopping transmission of the second PUCCH resource.

Illustratively, the network device configures the starting PRB number of the first PUCCH resource as the first PRB, and the starting PRB number of the second hop of the frequency hopping transmission of the first PUCCH resource is the second PRB. The normal terminal device may transmit the PUCCH using the first PUCCH resource. For the low complexity terminal device, the network device may send, to the low complexity terminal device, indication information, where the indication information is used to indicate that a starting frequency domain position of a first hop of a PUCCH of the low complexity terminal device is a second PRB, and a starting frequency domain position of a second hop of the PUCCH of the low complexity terminal device is the first PRB. Or the indication information may be used to indicate that when the low complexity device terminal device transmits the PUCCH, the configured first PRB may be updated to the second PRB, and the configured second PRB may be updated to the first PRB.

For easy understanding, please refer to fig. 17, which is a schematic diagram of time-frequency resources for transmitting PUCCH by low-complexity terminal equipment and normal terminal equipment. Fig. 17 shows an example in which a normal terminal device transmits a PUCCH repeatedly 2 times and transmits the PUCCH in an intra-slot frequency hopping manner. And fig. 17 shows that the low complexity terminal device transmits PUCCH 1 time, and takes the first transmission method as an example. In fig. 17, the network device configures the starting PRB number of the first PUCCH resource as the first PRB, and the starting PRB number of the second hop of the frequency hopping transmission of the first PUCCH resource as the second PRB. The network device can configure the starting PRB number of the second PUCCH resource as the second PRB, and the starting PRB number of the second hop of the frequency hopping sending of the first PUCCH resource as the first PRB. As can be seen from fig. 17, when the low complexity terminal device transmits the PUCCH in the first transmission scheme, the PUCCH resource can be shared with the normal terminal device. And the low-complexity terminal equipment and the normal terminal equipment occupy different frequency domain resources to send the PUCCH, so that the resource overhead can be saved. In particular, even if the normal terminal device repeatedly transmits the PUCCH, since the low complexity terminal device adopts the cross-slot transmission method to enable the second hopping of the PUCCH of the low complexity terminal device to be transmitted later, the already configured first PUCCH can still be used, and it is not necessary to separately configure PUCCH resources for the low complexity terminal device. Namely, new PUCCH resources or PUCCH formats do not need to be configured for the low-complexity terminal equipment independently, so that the resource overhead and the signaling overhead are further saved.

The foregoing embodiment takes the example that the low-complexity terminal device transmits one uplink channel (for example, PUCCH or PUSCH). In one possible scenario, the network device may configure the low-complexity terminal device to repeat transmitting the uplink channel multiple times, that is, to transmit multiple uplink channels. For example, the network device may implement configuring the low-complexity terminal device to repeatedly transmit the uplink channel for multiple times by using a method of repeatedly transmitting the uplink channel for normal configuration. For example, the network device may configure the number of repeated slots of one PUCCH format by configuring the nrofllots parameter. In this embodiment of the present application, for a low-complexity terminal device, a network device may also configure the low-complexity terminal device to repeatedly send an uplink channel R times by configuring the number R of uplink channels to be sent by the low-complexity terminal device. It should be understood that the R may also be indicated by the network device through dynamic signaling, for example, through DCI or MAC CE.

For example, the network device may configure low complexity terminal devices with parameters such as those shown in tables 6-1 through 6-3. It is assumed that the frequency domain resources used by the network device to configure/instruct the low complexity terminal device to transmit the uplink channel are consecutive Nf PRB resources. The network device pre-configures or dynamically indicates that the number of the starting frequency domain position of the first hop of the first uplink channel repeatedly sent for R times is the first PRB, and the number of the starting frequency domain position after frequency hopping (namely, the second hop) is the second PRB. It should be understood that if the uplink channel is PUCCH, the first PRB and/or the second PRB may be pre-configured by the network device, or dynamically indicated by the network device, or determined according to an indication of the network device and a predefined rule. If the uplink channel is a PUSCH, a Frequency Domain Resource Allocation (FDRA) field in DCI scheduling a PDSCH may indicate the first PRB. The second PRB may be pre-configured by the network device or calculated from the frequency domain offset indicated by the network device and the first PRB. For example, the second PRB and the first PRB may be calculated according to the following formula.

In the formula (1), the first and second groups,

it is indicated that the second PRB,

representing the first PRB, offset representing the frequency domain offset indicated by the network device,

an upstream BWP for computing upstream channel resources is indicated. The BWP may be an initial upstream BWP or an active upstream BWP for a low complexity terminal device or an upstream BWP indicated by a network device that is dedicated to computing the upstream channel resources.

It should be appreciated that in the time domain, the network device may indicate that the first hop of the first repeated transmission of the R repeated transmissions is located in slot m. It should be understood that if the uplink channel is PUCCH, there is DCI scheduling PDSCH. Assuming that the PDSCH is located in slot n, the HARQ feedback slot offset indicated by the network device through DCI is k, then m = n + k. If the uplink channel is a PUSCH, then there is DCI to schedule the PUSCH. Assuming that the DCI transmitted by the network device is located in time slot a, and the PUSCH time slot offset indicated by the TDRA field in the DCI is k2, then m = a + k2.

When the low-complexity terminal equipment sends the uplink channel in the range exceeding the first bandwidth threshold, the uplink channel can be sent by adopting a cross-time-slot frequency-hopping transmission mode. The time slot crossing frequency hopping transmission mode, for example, the first transmission mode, the second transmission mode, or the third transmission mode, specifies that a certain number of symbols are spaced between the end symbol of the first hop of one uplink channel and the start symbol of the second hop, so as to perform frequency tuning. However, when the low-complexity terminal device repeatedly transmits the uplink channel on the configured resource for multiple times. In the two adjacent transmissions, a certain number of symbols separated between the last symbol of the second hop of the ith uplink channel and the first symbol of the first hop of the (i + 1) th uplink channel may not be enough for the low-complexity terminal device to perform frequency tuning. In this case, the low-complexity terminal device obviously does not need to perform frequency hopping from the second hop of the ith uplink channel to the first hop of the (i + 1) th uplink channel, so as to avoid performance loss caused by discarding symbols.

Therefore, in the embodiment of the present application, when the uplink channel is repeatedly transmitted multiple times, it may be determined whether to perform frequency hopping between the second hop of the ith uplink channel and the first hop of the (i + 1) th uplink channel, so as to avoid performance loss caused by discarding the symbol as much as possible. It should be appreciated that the first hop of the uplink channel for the first of the R repetitions is transmitted in slot m. According to different cross-slot transmission modes adopted by the low-complexity terminal device, the second hop of the uplink channel of the first time may be in the time slot m, or may be in the time slot m +1 or the time slot m +2, and the like, and the first hops of the uplink channels of other times except the first time are located in the time slot m +1 or the time slot m +2, and the like. For convenience of description, in this embodiment of the present application, taking as an example that the first hop of the uplink channel at the ith time in the R repetitions may be located in time slot m + h, it should be understood that h is a positive integer, and i is greater than or equal to 2. For the time slot m + h, when the uplink channel is repeatedly transmitted for R times, the time-frequency resources occupied by the uplink channels of different times include the following two situations. Hereinafter, "mod" represents a modulo operation, i.e., "h mod x" represents the remainder of h divided by x.

Indicating rounding up.

In case one, no frequency hopping is performed between the second hop of the ith uplink channel and the first hop of the (i + 1) th uplink channel.

If h mod 2=0, then the low complexity terminal device is on this slot m + h, th

And repeatedly sending the uplink channel for the second time, and sending the first hop of the uplink channel. It should be understood that, in the time domain, the time domain resource used by the low complexity terminal device is L1 consecutive symbols of the slot m + h starting from the starting symbol S1. On the frequency domain, if h mod 4=0, then the frequency domain resources used by the low complexity terminal device are consecutive Nf PRB resources starting from the first PRB; if h mod 4=2, then the frequency domain resources used by the low complexity terminal device are consecutive Nf PRB resources starting from the second PRB.

If h mod 2=1, then the low complexity terminal device is on this slot m + h, th

The uplink channel is repeatedly transmitted a second time, and the second hop of the uplink channel, i.e., L2 symbols, is transmitted. It should be understood that, in the time domain, the time domain resource used by the low complexity terminal device is L2 consecutive symbols of the slot m + h starting from the starting symbol S2. In the frequency domain, if h mod 4=1, then the frequency domain resources used by the low complexity terminal device are consecutive Nf PRB resources starting from the second PRB; if h mod 4=3, then the frequency domain resources used by the low complexity terminal device are consecutive Nf PRB resources starting from the first PRB. For the determination of S2, reference may be made to the related contents of the foregoing third transmission mode embodiment.

For example, please refer to fig. 18, fig. 18 takes S2= S1+ L1, and R =2 as an example. That is, the low complexity terminal device repeatedly transmits the uplink channel for 2 times. The low complexity terminal device can complete 2 repeated transmissions in 4 slots. For example, the first 2 slots of the 4 slots are used for transmitting the uplink channel U, and the last 2 slots are used for transmitting the uplink channel W. It should be understood that the uplink channel W is a repetition of the uplink channel U. Note that, the fact that the uplink channel W is a duplicate of the uplink channel U means that the content carried by the uplink channel W is the same as the content carried by the uplink channel U. However, the remaining parameters, such as Redundancy Version (RV), of the uplink channel W and the uplink channel U may be different.

As shown in fig. 18, h =2, then

The time slot of the first hop for transmitting the uplink channel W at the second time, i.e. the 2 nd time, is the time slot m +2. Then time slot m is used to send the first hop of the uplink channel U, time slot m +1 is used to send the second hop of the uplink channel U, and time slot m +3 is used to send the second hop of the uplink channel W. In the frequency domain, since h mod 4=2, the frequency domain resources used by the low complexity terminal device are consecutive Nf PRB resources starting from the second PRB. That is, the low complexity terminal equipment transmits L1 symbols starting from symbol S1 on slot m +2 and starting from the second PRB over consecutive Nf PRB resources. For one uplink channel, the low-complexity terminal device transmits the uplink channel in a cross-slot transmission manner, so that the slot of the second hop for transmitting the uplink channel W at the 2 nd time is the slot m +3. In the frequency domain, a low complexity terminal device transmits L2 symbols from consecutive Nf PRB resources starting from symbol S2 at the first PRB on slot m +3.

In case two, frequency hopping is performed between the second hop of the ith uplink channel and the first hop of the (i + 1) th uplink channel.

If h mod 2=0, then the low complexity terminal device is on this slot m + h, th

And repeatedly sending the uplink channel for the second time, and sending the first hop of the uplink channel. In the time domain, the time domain resource used by the low complexity terminal device is L1 consecutive symbols of the slot m + h starting from the starting symbol S1. In the frequency domain, the frequency domain resources used by the low complexity terminal device are consecutive Nf PRB resources starting from the first PRB.

If h mod 2=1, then the low complexity terminal device is on this slot m + h, th

Second weightThe repetition is sent on the uplink channel and the second hop, i.e., L2 symbols, of the uplink channel is sent. In the time domain, the time domain resource used by the low complexity terminal device is L2 consecutive symbols of the slot m + h starting from the starting symbol S2. In the frequency domain, the frequency domain resources used by the low complexity terminal device are consecutive Nf PRB resources starting from the second PRB. For the determination of S2, reference may be made to the related contents of the foregoing third transmission mode embodiment.

For example, please refer to fig. 19, where S2= S1+ L1 and R =2 is taken as an example in fig. 19. I.e. the low complexity terminal device repeatedly sends the uplink channel 2 times. The low complexity terminal device may complete 2 retransmissions in 4 slots. For example, the first 2 slots of the 4 slots are used for transmitting the uplink channel U, and the last 2 slots are used for transmitting the uplink channel W. It should be understood that the uplink channel W is a repetition of the uplink channel U.

As shown in fig. 19, h =2, then

The time slot of the first hop for transmitting the uplink channel W at the second time, i.e. the 2 nd time, is the time slot m +2. Then time slot m is used to send the first hop of the uplink channel U, time slot m +1 is used to send the second hop of the uplink channel U, and time slot m +3 is used to send the second hop of the uplink channel W. In the frequency domain, the frequency domain resources used by the low complexity terminal device are consecutive Nf PRB resources starting from the first PRB. I.e. the low complexity terminal device transmits L1 symbols on slot m +2 starting from symbol S1, starting at the first PRB on consecutive Nf PRB resources. For one uplink channel, the low-complexity terminal device transmits the uplink channel in a cross-slot transmission manner, so that the slot of the second hop for transmitting the uplink channel W at the 2 nd time is the slot m +3. In the frequency domain, the low complexity terminal device transmits L2 symbols from Nf consecutive PRB resources starting from symbol S2 and starting at the second PRB on slot m +3.

In a specific implementation process, the network device may configure the low-complexity terminal device to send the uplink channel according to the first condition or the second condition. Or, the network device indicates the low-complexity terminal device configuration to send the uplink channel according to the first condition or the second condition through a dynamic signaling mode.

Alternatively, the low complexity terminal device configuration may be predefined to send the uplink channel as per case one or case two. For example, to avoid performance loss due to discarding symbols, a low complexity terminal device configuration may be predefined to send the uplink channel as appropriate. For example, suppose that the last symbol of the second hop for the ith transmission of the uplink channel U is spaced by Q symbols from the first symbol of the first hop for the (i + 1) th transmission of the uplink channel W. In order to avoid the performance loss caused by discarding the symbol, and at the same time, to obtain larger frequency hopping gain by hopping as much as possible. If Q is greater than or equal to N, then the low complexity terminal device may transmit the uplink channel as per case two. That is, if Q is greater than or equal to N, the frequency domain resource of the first hop for the i +1 th transmission of a certain uplink channel is the same as the frequency domain resource of the first hop for the i th transmission of the uplink channel. Conversely, if Q is less than N, then the low complexity terminal device may send the uplink channel as appropriate. That is, the frequency domain resource of the first hop for transmitting a certain uplink channel i +1 th time is the same as the frequency domain resource of the second hop for transmitting the uplink channel i-th time.

As an implementation manner, when performing frequency hopping transmission within a range exceeding a first bandwidth threshold, if N/L is greater than (or greater than or equal to) a preset threshold, the terminal device transmits the uplink channel according to the first transmission manner, the second transmission manner, or the third transmission manner as described above. And if the N/L is less than or equal to (or less than) the preset threshold, the terminal equipment still sends the uplink channel according to the transmission mode of frequency hopping in the time slot.

The embodiment of the present application further provides another transmission method to avoid performance loss of uplink channel transmission caused by frequency tuning.

In consideration of performance loss of the low complexity terminal device due to frequency tuning, the low complexity terminal device may not support a transmission mode of frequency hopping within a time slot, and the low complexity terminal device transmits an uplink channel within a range exceeding the first bandwidth threshold. For such a situation, the low-complexity terminal device in the embodiment of the present application only uses the fourth transmission method to transmit the uplink channel. The fourth transmission mode is as follows: the low-complexity terminal equipment repeatedly transmits the uplink channel for R times, transmits the uplink channel W for the ith time in the repeated R times in the mth time slot, and transmits the uplink channel U for the (i + 1) th time in the repeated R times in the (m + h) th time slot, wherein the uplink channel U is the repetition of the uplink channel W. The number of the starting symbol for transmitting the uplink channel W in the mth slot is the same as the number of the starting symbol for transmitting the uplink channel U in the m + h slot, the number of the symbols for transmitting the uplink channel W in the mth slot is the same as the number of the symbols for transmitting the uplink channel U in the m + h slot, and the frequency domain resource for transmitting the uplink channel W is different from the frequency domain resource for transmitting the uplink channel U. That is, if the network device configures the terminal device to transmit the uplink channel in the intra-slot frequency hopping transmission manner, the low complexity terminal device may transmit the uplink channel by repeatedly transmitting 2 slots, and perform inter-slot frequency hopping between adjacent 2 times of repeated transmission. Of course, for normal terminal equipment, the uplink channel can still be sent by sending 1 timeslot, and a transmission mode of frequency hopping within the timeslot is adopted. In addition, for the repeated transmission, if the network device configures the terminal device to repeatedly transmit the uplink channel E times in the intra-slot frequency hopping transmission manner, the low-complexity terminal device may transmit the uplink channel by repeatedly transmitting 2E slots, and perform inter-slot frequency hopping between adjacent 2 repeated transmissions. Of course, for normal ue, the uplink channel can still be transmitted by repeating E slots, and inter-slot frequency hopping is performed between two consecutive 2 repetitions.

For ease of understanding, the fourth transmission mode will be described below in various possible scenarios.

In a scenario one, the uplink channel is the Msg3PUSCH in the RACH procedure.

It should be understood that a random access response uplink grant (RAR UL grant) or a hopping indication field in the DCI field instructs the terminal device to send Msg3PUSCH in a frequency hopping manner (e.g., the hopping indication field is set to 0), then the low complexity terminal device sends Msg3PUSCH 1 time and sends in a non-frequency hopping manner.

If the terminal equipment is instructed by a random access response (RAR UL grant) or a frequency hopping indication field in the DCI field to transmit the Msg3PUSCH in a frequency hopping manner (for example, the frequency hopping indication field is set to 1). In the embodiment of the application, for a low-complexity terminal device, if the low-complexity terminal device transmits the Msg3PUSCH in a range exceeding a first bandwidth threshold, the Msg3PUSCH of 2 slots can be repeatedly transmitted, and 2 inter-slot hopping is performed.

For example, the network device configures Msg3PUSCH with a symbol length of L in 1 slot, with a starting symbol of S1 in 1 slot, and S1 and L are indicated by a RAR UL grant or a TDRA field in a DCI field. Assuming that the low complexity terminal device sends Msg3PUSCH a first time in slot m, the low complexity terminal device may send Msg3PUSCH a second time in slot m +1. And the Msg3PUSCH symbols sent in slot m and slot m +1 are both L in length, and the starting symbols in slot m and slot m +1 are both S1. When the RAR UL grant schedules the Msg3PUSCH, there is m = n + k2+ delta, where n represents the time slot in which the PDSCH carrying the RAR UL grant is located, k2 is the time slot offset indicated by the TDRA field in the RAR UL grant field, and delta is a predefined value. When Msg3PUSCH is scheduled by DCI, m = n + k2, n denotes the slot in which the PDCCH carrying the DCI is located, and k2 is the slot offset indicated by the TDRA field in the DCI field.

The frequency domain resource of the Msg3PUSCH transmitted by the low-complexity terminal device in the slot m is indicated by the RAR UL grant or the FDRA domain in the DCI domain. The frequency-domain resource indication includes a starting PRB number, e.g., a first PRB, and a frequency-domain resource width, e.g., consecutive Nf PRBs. It should be understood that the frequency domain resource width of the Msg3PUSCH transmitted by the low complexity terminal device in slot m +1 is also contiguous Nf PRBs. The frequency-domain resource starting PRB number of the Msg3PUSCH transmitted by the low-complexity terminal device in slot m +1 is, for example, the second PRB, where the second PRB may be jointly determined by the first PRB, the frequency-domain offset, and the BWP bandwidth used for calculating the frequency hopping range. See, for example, equation (1) above.

In a possible implementation manner, the starting PRB number of the frequency domain resource of the Msg3PUSCH sent by the low-complexity terminal device in slot m and the starting PRB number of the frequency domain resource of the Msg3PUSCH sent by the low-complexity terminal device in slot m +1 may also be adaptively changed according to m. For example, if m is an even number, the starting PRB number of the frequency domain resource of the Msg3PUSCH transmitted by the low complexity terminal device in slot m is the first PRB, and the starting PRB number of the frequency domain resource of the Msg3PUSCH transmitted by the low complexity terminal device in slot m +1 is the second PRB. Conversely, if m is an odd number, the starting PRB number of the frequency domain resource of the Msg3PUSCH transmitted by the low-complexity terminal device in slot m is the second PRB, and the starting PRB number of the frequency domain resource of the Msg3PUSCH transmitted by the low-complexity terminal device in slot m +1 is the first PRB.

Of course, if the network device configures or instructs the low complexity terminal device to repeatedly send Msg3PUSCH R times in an intra-slot hopping fashion. When the low complexity terminal device does not support intra-slot hopping and transmits Msg3PUSCH in a range exceeding the first bandwidth threshold, the low complexity terminal device may transmit Msg3PUSCH by repeatedly transmitting R or 2R slots and perform inter-slot hopping between adjacent 2 repeated transmissions. A particular low complexity terminal device may send Msg3PUSCH by repeatedly sending R slots, or Msg3PUSCH by 2R slots, either pre-configured by the network device or indicated by dynamic signaling. Or may be determined based on capability information or assistance information of the low complexity terminal device. For example, the network device determines according to the capability information or the auxiliary information reported by the low-complexity terminal device. Or may be predefined. For example, msg3PUSCH is sent by default over 2R slots. For another example, if the interval between the last symbol of the Msg3PUSCH transmitted the ith time and the first symbol of the Msg3PUSCH transmitted the i +1 th time is greater than or equal to N, then the Msg3PUSCH of R slots is repeatedly transmitted; and if the interval between the last symbol of the Msg3PUSCH transmitted at the ith time and the first symbol of the Msg3PUSCH transmitted at the (i + 1) th time is less than N, repeatedly transmitting the Msg3PUSCH of 2R slots.

In a second scenario, the uplink channel is a PUCCH fed back by the HARQ of Msg4 in the RACH procedure.

Assume that the symbol length of the PUCCH resource indicated by the network device is L and the starting symbol is S1. The network device instructs the low complexity terminal device to send HARQ feedback for Msg4 in slot m. In the embodiment of the present application, the low complexity terminal device may repeatedly transmit 2 PUCCHs in slot m and slot m +1. The number of symbols of the PUCCH transmitted in the slot m and the number of symbols of the PUCCH transmitted in the slot m +1 are both L, and the initial symbols in the slot m and the slot m +1 are both S1. And the time slot m +1 are sent in a frequency hopping mode, namely in the time slot m, the PRB number of the frequency domain resource adopted by the low-complexity terminal equipment is a first PRB, and in the time slot m +1, the PRB number of the frequency domain resource adopted by the low-complexity terminal equipment is a second PRB. Wherein the first PRB and the second PRB may be jointly determined according to an indication of the network device and a predefined PRB offset.

It should be understood that in scenario one and scenario two, if the number Q of symbols spaced between the end symbol of the ith uplink channel U and the start symbol of the (i + 1) th uplink channel W in two adjacent repeated transmissions of the PUCCH by the low complexity terminal device is greater than or equal to the number N of symbols corresponding to the time required for the low complexity terminal device to perform frequency hopping, i.e., perform frequency tuning, then the low complexity terminal device may complete frequency tuning within Q symbols. In this case, the low complexity terminal device does not need to repeatedly transmit the uplink channel more times, that is, the low complexity terminal device may transmit the uplink channel according to the repetition times indicated by the network device. For example, the network device instructs the low complexity terminal device to repeat transmitting the uplink channel E times, then the low complexity terminal device may determine R = E, i.e. repeat transmitting the uplink channel E times. For example, the PUCCH transmission for the first of the E repetitions is performed in the mth slot.

On the contrary, if the low complexity terminal device repeatedly transmits the PUCCH twice in the adjacent time, the number Q of symbols spaced between the end symbol of the ith uplink channel U and the start symbol of the (i + 1) th uplink channel W is less than the number N of symbols corresponding to the time required for the low complexity terminal device to perform frequency hopping, i.e., frequency tuning. Then even a low complexity terminal device is not sufficient to complete frequency tuning within Q symbols. In this case, the low complexity terminal device may repeat transmitting the uplink channel more times. For example, the network device instructs the low complexity terminal device to repeat transmitting the uplink channel E times, then the low complexity terminal device may determine R =2E, i.e. repeat transmitting the uplink channel 2E times. For example, the ith transmission PUCCH among 2E repetitions is performed in the mth slot, and the (i + 1) th transmission PUCCH among 2E repetitions is performed in the (m + 1) th slot. That is, one PUCCH is transmitted in each slot, the symbol length of the PUCCH in each slot is L, and the starting symbol in each slot is S1. And sending the data in a frequency hopping mode between two adjacent time slots, namely in the time slot m, the PRB number of the frequency domain resource adopted by the low-complexity terminal equipment is a first PRB, and in the time slot m +1, the PRB number of the frequency domain resource adopted by the low-complexity terminal equipment is a second PRB. Wherein the first PRB and the second PRB may be jointly determined according to an indication of the network device and a predefined PRB offset.

It should be understood that if the low complexity terminal device repeatedly transmits the PUCCH two times in a neighboring sequence, the number Q of symbols spaced between the end symbol of the ith uplink channel U and the start symbol of the (i + 1) th uplink channel W is less than the number N of symbols corresponding to the time required for the low complexity terminal device to perform frequency hopping, i.e., perform frequency tuning. The low complexity terminal equipment needs to discard part of the symbols of the uplink channel U/or the uplink channel W. In order to reduce the influence on the transmission performance of the PUCCH as much as possible, in the embodiment of the present application, the preset threshold may be determined according to a ratio of the number of symbols that need to be discarded to the number of symbols of the uplink channel to be transmitted. For example, the predetermined threshold may be referred to as a first value. The first value may be pre-configured by the network device or predefined by the protocol, for example, the first value is 10% or 20%. Or the first value may also be determined according to the capability information or the auxiliary information reported by the low-complexity terminal device.

In two adjacent transmissions, the symbol discarded by the low-complexity terminal device may be a partial symbol at the end of the i-th PUCCH or a partial symbol at the beginning of the i + 1-th PUCCH. Alternatively, the symbols discarded by the low complexity terminal device may be a partial symbol at the end of the i-th PUCCH and a partial symbol at the beginning of the i + 1-th PUCCH. Which symbols are specifically discarded may be preconfigured by the network device, or predefined by the protocol, or indicated by the network device through dynamic signaling.

As another implementation manner, in the embodiment of the present application, whether to transmit the uplink channel in a four-transmission manner may be selected according to a ratio of the number of symbols that need to be discarded to the number of symbols of the uplink channel to be transmitted. For example, if N/L is greater than or equal to the preset threshold, the fourth transmission mode is adopted.

And in a third scenario, the network equipment instructs the low-complexity terminal equipment to transmit the PUCCH in a frequency hopping mode in the time slot. The low complexity terminal device transmits the PUCCH in a range exceeding the first bandwidth threshold.

Assume that the symbol length of the PUCCH resource indicated by the network device is L and the starting symbol is S1. A low complexity terminal device may transmit a PUCCH of 1 slot in the mth slot. Alternatively, the PUCCH may be transmitted once in the mth slot and once again in the m +1 th slot, that is, the PUCCH may be repeatedly transmitted 2 times.

In a possible implementation manner, if N/L is greater than or equal to a preset threshold, the PUCCH is repeatedly transmitted 2 times in the mth slot and the m + h slot. That is, one PUCCH is transmitted in each slot, the symbol length of the PUCCH in each slot is L, and the starting symbol in each slot is S1. And sending the data in a frequency hopping mode between two adjacent time slots, namely in the time slot m, the PRB number of the frequency domain resource adopted by the low-complexity terminal equipment is a first PRB, and in the time slot m +1, the PRB number of the frequency domain resource adopted by the low-complexity terminal equipment is a second PRB. Wherein the first PRB and the second PRB may be jointly determined according to an indication of the network device and a predefined PRB offset.

And if the N/L is smaller than the preset threshold, the PUCCH is sent once in the mth time slot. That is, the low complexity terminal device still transmits the PUCCH in the intra-slot hopping transmission scheme, and transmits the PUCCH only once in slot m. The starting symbol of the first hop of the PUCCH is S1, and the length is the first L1 symbols of the L symbols. The second hop starting symbol of the PUCCH is S2, and the length of the second hop starting symbol is L-L1 symbols. The starting PRB number of the frequency domain resource adopted by the first hop is a first PRB, the frequency domain width is Nf PRBs, the starting PRB number of the frequency domain resource adopted by the second hop is a second PRB, and the frequency domain width is Nf PRBs.

As for the four new transmission modes provided in the embodiment of the present application, the first transmission mode, the second transmission mode, and the third transmission mode specify a certain number of symbols between the first hop of the uplink channel and the second hop of the uplink channel for an application scenario where the low-complexity terminal device sends one uplink channel in a range exceeding the first bandwidth threshold. That is, the time for performing frequency tuning is reserved for the low-complexity terminal device, and the decrease of the transmission performance of the uplink channel caused by performing frequency tuning when the low-complexity terminal device transmits the uplink channel in the range exceeding the first bandwidth threshold is reduced as much as possible. The fourth transmission mode is a scene that the network equipment configures the terminal equipment with the uplink channel transmitted in the frequency hopping transmission mode in the time slot, and the low-complexity terminal equipment is specified to transmit the uplink channel according to the transmission mode of repeating the frequency R times and frequency hopping between the time slots within the range exceeding the first bandwidth threshold. Since a certain number of symbols are also spaced between two adjacent times, the decrease in the transmission performance of the uplink channel due to frequency tuning can be reduced, and more symbols can be transmitted when repeatedly transmitting, so that the fourth transmission mode avoids the decrease in the transmission performance of the uplink channel by using more time-frequency resources.

In the foregoing, four transmission modes of the uplink channel newly introduced in the embodiment of the present application are introduced, and then, in combination with the existing transmission modes of the current uplink channel, that is, the intra-slot frequency hopping transmission mode, the inter-time frequency hopping transmission mode, and the non-frequency hopping transmission mode, there are 7 transmission modes of the uplink channel in total. With reference to the foregoing embodiments and related drawings, what kind of transmission method among the 7 transmission methods for uplink channels is used by the terminal device for PUCCH reception or uplink channel transmission is described below, which kind of transmission method is used by the terminal device may be determined by the terminal device itself, or may be instructed by the network device to use by the terminal device.

Referring to fig. 20, a transmission method of an uplink channel provided in the embodiment of the present application is shown. In the following description, the method is applied to the network architecture shown in fig. 1 as an example. In addition, the method may be performed by two communication apparatuses, for example, a first communication apparatus and a second communication apparatus, where the first communication apparatus may be a network device or a communication apparatus capable of supporting the network device to implement the functions required by the method, or the first communication apparatus may be a terminal device or a communication apparatus capable of supporting the terminal device to implement the functions required by the method, and may of course be other communication apparatuses such as a system on chip. The same applies to the second communication apparatus, which may be a network device or a communication apparatus capable of supporting the network device to implement the functions required by the method, or a terminal device or a communication apparatus capable of supporting the terminal device to implement the functions required by the method, and of course, other communication apparatuses such as a system on a chip may also be used. The implementation manners of the first communication apparatus and the second communication apparatus are not limited, for example, the first communication apparatus may be a network device, the second communication apparatus is a terminal device, or both the first communication apparatus and the second communication apparatus are network devices, or both the first communication apparatus and the second communication apparatus are terminal devices, or the first communication apparatus is a network device, and the second communication apparatus is a communication apparatus capable of supporting the terminal device to implement the functions required by the method, and so on. The network device is, for example, a base station.

For convenience of introduction, in the following, the method is performed by a network device and a terminal device as an example, that is, the first communication apparatus is a network device and the second communication apparatus is a terminal device as an example. If the present embodiment is applied to the network architecture shown in fig. 1, the network device described below may be a network device in the network architecture shown in fig. 1. It should be noted that the embodiments of the present application are only implemented as examples by a network device and a terminal device, and are not limited to these two communication apparatuses. For example, the embodiment of the present application may also be executed by a terminal device and a terminal device, that is, both ends of communication are terminal devices.

S2001, the terminal device determines a target transmission mode for transmitting the uplink channel.

In the embodiment of the present application, there are 7 transmission modes for transmitting uplink, where the 7 transmission modes are a first transmission mode, a second transmission mode, a third transmission mode, a fourth transmission mode, an intra-slot frequency hopping transmission mode, and an inter-slot frequency hopping transmission mode and a non-frequency hopping transmission mode, respectively. Before uplink channel reception or uplink channel transmission, the terminal device may determine a first transmission scheme used for uplink channel reception or uplink channel transmission from among the plurality of transmission schemes. Of course, if the network device is pre-configured or the protocol predefines what transmission scheme the terminal device employs, the terminal device need not select from multiple transmission schemes. For example, for a low complexity terminal device, a network device pre-configures or a protocol pre-defines that the low complexity terminal device transmits an uplink channel by using a first transmission mode, a second transmission mode, a third transmission mode, or a fourth transmission mode. The low complexity terminal device defaults to a configured or predefined transmission mode.

The plurality of transmission modes may include at least two transmission modes of the 7 transmission modes. The at least two transmission modes at least comprise any one of a first transmission mode, a second transmission mode, a third transmission mode and a fourth transmission mode, a frequency hopping transmission mode in a time slot, and any one of a frequency hopping transmission mode and a non-frequency hopping transmission mode between time slots.

For example, the plurality of transmission schemes include one or more of a first transmission scheme, a second transmission scheme, a third transmission scheme, and a fourth transmission scheme, and a non-frequency hopping transmission scheme. Or, the multiple transmission modes include one or more of a first transmission mode, a second transmission mode, a third transmission mode and a fourth transmission mode, and a frequency hopping transmission mode in a time slot. Or, the multiple transmission modes include one or more of a first transmission mode, a second transmission mode, a third transmission mode and a fourth transmission mode, and an inter-slot frequency hopping transmission mode. Or, the multiple transmission modes include one or more of a first transmission mode, a second transmission mode, a third transmission mode and a fourth transmission mode, a non-frequency hopping transmission mode and a frequency hopping transmission mode in a time slot. Or, the multiple transmission modes include one or more of a first transmission mode, a second transmission mode, a third transmission mode and a fourth transmission mode, a non-frequency hopping transmission mode and an inter-slot frequency hopping transmission mode. Or, the multiple transmission modes include one or more of a first transmission mode, a second transmission mode, a third transmission mode and a fourth transmission mode, and an intra-slot frequency hopping transmission mode and an inter-slot frequency hopping transmission mode. Or, the multiple transmission modes include one or more of a first transmission mode, a second transmission mode, a third transmission mode and a fourth transmission mode, a non-frequency hopping transmission mode, an intra-slot frequency hopping transmission mode and an inter-slot frequency hopping transmission mode.

The method for determining the target transmission mode from the multiple transmission modes comprises the following two determination modes:

the first determination method: the terminal equipment can determine the target transmission mode according to the indication of the network equipment.

Illustratively, S2002, the network device sends first indication information to the terminal device, and accordingly, the terminal device receives the first indication information. The first indication information may be used to indicate any one of a plurality of transmission modes, for example, a first transmission mode. The first indication information may be carried in one or more of Radio Resource Control (RRC) signaling, medium access control element (MAC CE) signaling, downlink Control Information (DCI) signaling, or the like. The one or more fields may be a field defined by RRC signaling, a field defined by MAC CE signaling, or a field defined by DCI signaling, or may be a newly defined RRC field, MAC CE field, or DCI field, which is not limited in this embodiment. Of course, the first indication information may also be carried in newly defined signaling.

The first indication information may occupy one or more bits, and different bit states correspond to different transmission modes.

For example, the plurality of transmission schemes include two transmission schemes, and the first indication information occupies 1 bit. For example, the multiple transmission modes include a first transmission mode and a frequency hopping transmission mode in a time slot, a state of "0" of the 1 bit may indicate the first transmission mode, and a state of "1" of the 1 bit may indicate the frequency hopping transmission mode in the time slot. Alternatively, a state of "0" for the 1 bit may indicate a frequency hopping transmission scheme within the slot, and a state of "1" for the 1 bit may indicate a first transmission scheme.

For another example, the plurality of transmission schemes include at least three transmission schemes, and the first indication information may occupy at least 2 bits. Specific indication contents of exemplary first indication information may refer to table 5.

TABLE 5

Bit state of first information	Indicating content
		00	First transmission mode
01	Second transmission mode
		10	Frequency hopping transmission mode in time slot
11	Inter-slot frequency-hopping transmission, or reservation, or use as other indications

S2003, the terminal device sends the capability information to the network device, and correspondingly, the network device receives the capability information, wherein the capability information is used for indicating whether the terminal device supports a cross-time slot transmission mode. The cross-slot transmission mode may include one or more of a first transmission mode, a second transmission mode, a third transmission mode and a fourth transmission mode.

The capability information is used to indicate whether the terminal device supports the cross-slot transmission mode, and it can also be understood that the capability information can feed back whether the terminal device supports the cross-slot transmission mode. The capabilities of different terminal devices are different, e.g. some terminal devices support the first transmission mode and some terminal devices do not support the first transmission mode. If the network device indicates that the terminal device which does not support the first transmission mode adopts the first transmission mode to transmit the uplink channel, it is obviously not suitable. Therefore, in the embodiment of the present application, the network device may determine the target transmission mode from the multiple transmission modes according to the capability information reported by the terminal device, so as to avoid that the determined transmission mode is not matched with the capability of the terminal device. Of course, the terminal device does not send capability information to the network device, and may default that the terminal device supports the cross-slot transmission mode. That is, S2003 is an optional step, illustrated in dashed lines in fig. 20. In addition, the capability information can be used for multiplexing the capability information of the current terminal equipment. Or the capability information may not be multiplexed with the capability information of the current terminal device, for example, referred to as auxiliary information, which is used to indicate whether the terminal device supports the cross-slot transmission mode.

Additionally, the capability information may also include one or more parameters that assist the terminal device in determining how to use the cross-slot transmission scheme. For example, the one or more parameters are used to indicate which of the first to third cases in the first transmission mode is used by the terminal device. Alternatively, the one or more parameters are used to indicate which of case four to case six in the second transmission mode is employed by the terminal device. Alternatively, the one or more parameters are used to indicate which of case seven through case nine of the third transmission means is employed by the terminal device. Or the one or more parameters are used for indicating the terminal equipment to adopt a fourth transmission mode when the N/L is greater than or equal to a preset threshold.

Similar to the first indication information, the capability information may also be carried in one or more of RRC signaling, MAC CE signaling, UCI signaling, or the like. The one or more fields may be a field defined by RRC signaling, a field defined by MAC CE signaling, or a field defined by UCI signaling, or may be a newly defined RRC field, MAC CE field, or UCI field, which is not limited in this embodiment. Of course, the capability information may also be carried in newly defined signaling.

It should be noted that, in the embodiment of the present application, specific implementation of the capability information is not limited, and the capability information may directly indicate whether the terminal device supports a cross-timeslot transmission mode. For example, the first indication information and the capability information may be carried in different signaling or different fields of the same signaling. The capability information may indirectly indicate whether the terminal device supports a cross-slot transmission scheme. For example, whether the terminal device supports the cross-slot transmission mode may be indicated by indicating whether a field of bearer capability information exists. If the field of the bearing capacity information exists, the terminal equipment can be indicated not to support a cross-time slot transmission mode; correspondingly, if the field carrying the capability information does not exist, the terminal equipment can be indicated to support the cross-slot transmission mode.

The second determination method is as follows: the terminal device determines a target transmission scheme according to a predetermined rule (also referred to as a preset rule).

The preset rule may be that the low-complexity terminal device sends the uplink channel by using a first transmission mode, a second transmission mode, a third transmission mode, or a fourth transmission mode. The preset rule may be to determine the target transmission mode according to the capability information of the low-complexity terminal device.

It should be understood that S2002 is an optional step, and is therefore illustrated in fig. 20 by a dotted line, since the terminal device can determine the target transmission mode according to the preset rule.

It should be understood that the network device may also receive the uplink channel from the terminal device according to a predetermined rule. For example, if the network device determines to receive the uplink channel from the low-complexity terminal device, the network device receives the uplink channel from the low-complexity terminal device in a target transmission mode corresponding to the preset rule. And if the preset rule is that the target transmission mode is determined according to the capability information of the low-complexity terminal equipment. Then, the network device may determine the target transmission mode according to the capability information reported by the low-complexity terminal device, so as to receive the uplink channel from the low-complexity terminal device in the target transmission mode.

And S2004, the terminal equipment sends the uplink channel according to the determined target transmission mode, and correspondingly, the network equipment receives the uplink channel.

And the terminal equipment determines a target transmission mode adopted by the uplink channel and transmits the uplink channel in the target transmission mode. The network equipment receives the uplink channel from the terminal equipment in a target transmission mode.

For example, the low-complexity terminal device determines to transmit the uplink channel by using the first transmission mode. Since, for example, 14 × n symbols are spaced between the first hop and the second hop of any one uplink channel in the first transmission scheme, even if the low-complexity terminal device transmits the uplink channel in a range exceeding the first bandwidth threshold, frequency tuning can be performed within 14 × n symbols. Therefore, the sending influence on the uplink channel can be reduced, and the reduction of the transmission performance of the uplink channel of the low-complexity terminal equipment is avoided as much as possible. And the interval between the first hop and the second hop of any PUCCH is 14 multiplied by n symbols, and the low-complexity terminal equipment can determine that the number of the starting symbol of the second hop of the PUCCH is the same as the number of the starting symbol of the second hop when the normal terminal equipment adopts the intra-slot frequency hopping transmission mode to transmit the PUCCH. Therefore, the network equipment can uniformly configure the public PUCCH resources (formats) through the system messages without configuring the single PUCCH formats for the low-complexity terminal equipment separately, and the signaling overhead and the resource overhead can be reduced. For example, PUCCH resources are configured for the terminal device along with the current PUCCH format, the candidate PUCCH symbol position of each slot remains unchanged, which can reduce resources used for transmitting PUCCH, and also does not occupy resources allocated to other terminal devices.

For example, the low-complexity terminal device determines to transmit the uplink channel by using the second transmission mode. In the second transmission mode, X symbols are spaced between the first hop and the second hop of any one uplink channel, so that even if the low-complexity terminal equipment transmits the uplink channel in a range exceeding the first bandwidth threshold, the frequency tuning can be carried out in the X symbols. Therefore, the sending influence on the uplink channel can be reduced, and the reduction of the transmission performance of the uplink channel of the low-complexity terminal equipment is avoided as much as possible. Wherein X may be smaller than 14, that is, the first hop of the uplink channel and the second hop of the uplink channel may be located in the same timeslot. This reduces the delay in transmitting the uplink channel.

For example, the low-complexity terminal device determines to transmit the uplink channel by using the third transmission mode. In the third transmission scheme, the relationship between the end symbol number S1 of the first hop of the uplink channel and the number S2 of the start symbol of the second hop of the uplink channel is defined. Equivalently, it is indirectly indicated that the first and second hops of the uplink channel are separated by a certain number of symbols. And S2 can be selected from a plurality of sets, such as [ S1+ L1, S1-L1], [ S1+ L1, S1], [ S1, S1-L1], or [ S1, S1+ L1, S1-L1], with greater flexibility.

For another example, the low-complexity terminal device determines to transmit the uplink channel by using the fourth transmission method, and specifies a method for the low-complexity terminal device not supporting the frequency hopping transmission method in the time slot to transmit the uplink channel in a range exceeding the first bandwidth threshold, and how to repeatedly transmit the uplink channel.

In a possible scenario, if the number of symbols of the uplink channel is odd, it may cause that transmitted symbols between different terminal devices partially overlap, i.e. cause interference between terminal devices. For example, please refer to fig. 21, a schematic diagram of time-frequency resources for transmitting an uplink channel by the low-complexity terminal device 1. Fig. 21 exemplifies the number of symbols L =11 in the uplink channel. Then the number of symbols L1 of the first hop of the uplink channel in slot m is 5 and the number of symbols L2 of the second hop of the uplink channel in slot m +1 is 6. As shown in fig. 21, X =9. In this case, on the time-frequency resource in the first area as shown in fig. 21, no matter the first hop of the uplink channel of the transmitting terminal device 2 or the second hop of the uplink channel of the transmitting terminal device 2 overlaps with the last symbol of the second hop of the uplink channel of the low complexity terminal device 1 as shown in fig. 22. I.e. causing interference between the terminal devices.

However, the first transmission method, the second transmission method, and the third transmission method provided in the embodiment of the present application may flexibly determine X, and no matter the number of symbols of the uplink channel is odd or even, the time-frequency resource can be multiplexed better between the low-complexity terminal device and the normal terminal device, thereby avoiding partial overlapping of the transmitted symbols between different terminal devices, and further avoiding interference between terminal devices.

In a possible scenario, time-frequency resources of different terminal devices may be the same, and signals of different terminal devices may be distinguished in a code division multiplexing manner. Taking PUCCH as an example, for PUCCH format 1, a modulated data signal is multiplied by a specific orthogonal sequence (orthogonal sequence), and orthogonal sequences used by different terminal devices are different, so that signals of different terminal devices can be orthogonally transmitted, and therefore, the same time-frequency resource can be used to distinguish the signals of different terminal devices in a code domain. However, the premise of orthogonal transmission is that the OFDM symbols where data signals of different terminal devices are located must be the same. If the OFDM symbol where the data signal of one terminal device is located is the same as the OFDM symbol where the demodulation reference signal (DM-RS) of another UE is located, since the data signal and the demodulation reference signal are obviously not orthogonally transmitted, signals of different DM-RS will interfere with each other, affecting the channel estimation and demodulation performance of the uplink channel, and thus affecting the uplink performance of the DM-RS.

For example, the OFDM symbol of the second hop transmitted by terminal device 1 and the OFDM symbol of the first hop transmitted by terminal device 2 use the same time-frequency resources. Terminal device 1 and terminal device 2 may both be low complexity terminal devices. It is also possible that terminal device 1 is a low complexity terminal device and terminal device 2 is a normal terminal device. Alternatively, the terminal device 1 is a normal terminal device, and the terminal device 2 is a low-complexity terminal device. And when the number of the symbols of the PUCCH is equal to a certain value, the number of the OFDM symbols for transmitting the DM-RS in the OFDM symbols of the first hop of the PUCCH is different from the number of the OFDM symbols for transmitting the DM-RS in the OFDM symbols of the second hop of the PUCCH. The number of OFDM symbols used for transmitting data in the OFDM symbols of the first hop of the PUCCH is different from the number of OFDM symbols used for transmitting data in the OFDM symbols of the second hop of the PUCCH. For example, the number of symbols of the PUCCH is equal to 6, 10, or 14. That is, when L satisfies L/2 equal to odd. In addition, in PUCCH format 1, it is assumed that the first OFDM symbol number of L symbols transmitted by PUCCH is 0, and the numbers are sequentially incremented by 1 from the next. Then the even numbered OFDM symbols carry DM-RS signals, i.e. such OFDM symbols are DM-RS OFDM symbols, and the other OFDM symbols are symbols carrying data signals, i.e. data OFDM symbols. The OFDM symbol for transmitting the DM-RS and the OFDM symbol for transmitting the data have different relative symbol positions in the first hop and the second hop, respectively, and may be just staggered as shown in fig. 23. If the time-frequency resources used by the second-hop OFDM symbol sent by the terminal device 1 and the first-hop OFDM symbol sent by the terminal device 2 are the same, then the OFDM symbols in which the data signals of different terminal devices are located are different, and the OFDM symbol in which the data signal of the terminal device 1 is located is the same as the OFDM symbol in which the DM-RS of the terminal device 2 is located, which may increase interference between the terminal devices and affect the uplink performance of the terminal devices.

However, in the cross-slot frequency hopping transmission manner provided in the embodiment of the present application, it may be ensured that the time-frequency resources used by the first-hop OFDM symbol sent by the terminal device 1 and the first-hop OFDM symbol sent by the terminal device 2 are the same, or the time-frequency resources used by the second-hop OFDM symbol sent by the terminal device 1 and the second-hop OFDM symbol sent by the terminal device 2 are the same. Therefore, under the condition that the time-frequency resources of different terminal devices are the same, signals of different terminal devices are distinguished in a code division multiplexing mode, interference among the terminal devices can be reduced, and the influence on the uplink performance of the terminal devices is reduced as much as possible.

In a possible scenario, PUCCH resources are shared by multiple low complexity terminal devices. For example, the PUCCH resource is shared by the low complexity terminal device 1, the low complexity terminal device 2, and the low complexity terminal device 3. The network device pre-configures the starting symbols of the uplink channels of the low complexity terminal device 1, the low complexity terminal device 2 and the low complexity terminal device 3 in the time slot to be S1. If the network device schedules the low complexity terminal device 1 and the low complexity terminal device 3 to transmit the first hop OFDM symbol of the uplink channel in the time slot m, and transmits the second hop OFDM symbol of the uplink channel in the time slot m +1. As shown in fig. 24, in order to avoid overlapping of time-frequency resources of uplink channels of different terminal devices, the network device cannot schedule the low-complexity terminal device 2 to transmit the first-hop OFDM symbol of the uplink channel in the time slot m +1. Therefore, the low complexity terminal device 2 can only be scheduled in the following time slot, which increases the latency of the low complexity terminal device 2.

However, in the cross-timeslot frequency hopping transmission method provided in the embodiment of the present application, on the basis of avoiding overlapping of time-frequency resources of uplink channels of different terminal devices, the scheduling delay of the low-complexity terminal device 2 can be reduced.

For example, referring to fig. 25, there are at least 2 first hop time frequency resources per slot. On the basis of avoiding the time-frequency resource overlapping of the uplink channels of different terminal devices, if the network device schedules the low-complexity terminal device 1 and the low-complexity terminal device 3 to send the first-hop OFDM symbol of the uplink channel in the time slot m, and sends the second-hop OFDM symbol of the uplink channel in the time slot m +1. The network device may still schedule the low-complexity terminal device 2 to transmit the first-hop OFDM symbol of the uplink channel in the time slot m +1, so that the scheduling delay of the low-complexity terminal device 2 can be reduced.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is introduced from the perspective of interaction between the terminal device and the network device. The steps executed by the network device may also be implemented by different communication apparatuses. For example: the first device is configured to determine a target transmission mode from multiple transmission modes, and the second device is configured to receive an uplink channel in the target transmission mode, that is, the first device and the second device together complete the steps performed by the network device in the embodiment of the present application, and the present application does not limit a specific division mode. When the network architecture includes one or more Distributed Units (DUs), one or more Centralized Units (CUs) and one or more Radio Units (RUs), the steps performed by the network device may be implemented by the DUs, CUs and RUs, respectively. In order to implement the functions in the method provided by the embodiments of the present application, the terminal device and the network device may include a hardware structure and/or a software module, and the functions are implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether any of the above-described functions is implemented as a hardware structure, a software module, or a hardware structure plus a software module depends upon the particular application and design constraints imposed on the technical solution.

The embodiment of the present application provides a communication apparatus based on the same inventive concept as the method embodiment. A communication apparatus for implementing the method according to the embodiment of the present application is described below with reference to the drawings.

Fig. 26 is a schematic block diagram of a communication device 2600 provided in an embodiment of the present application. The communication device 2600 may include a processing module 2610 and a transceiver module 2620. Optionally, a storage unit may be included, which may be used to store instructions (code or programs) and/or data. The processing module 2610 and the transceiver module 2620 may be coupled with the storage unit, for example, the processing unit 2610 may read instructions (code or program) and/or data in the storage unit to implement the corresponding method. The above units may be independently arranged, or may be partially or wholly integrated.

In some possible implementations, the communication device 2600 can correspondingly implement the behavior and the function of the terminal device in the foregoing method embodiment, for example, implement the method performed by the terminal device in the embodiment of fig. 20. For example, the communication device 2600 may be a terminal device, a component (e.g., a chip or a circuit) applied to the terminal device, or a chip set in the terminal device or a part of the chip for performing the related method function. The transceiver module 2620 may be used to perform all of the receiving or transmitting operations performed by the terminal device in the embodiment shown in fig. 20, e.g., S2002, S2003, S2004 in the embodiment shown in fig. 20, and/or other processes for supporting the techniques described herein. Among other things, the processing module 2610 is used to perform all operations performed by the terminal device in the embodiment shown in fig. 20 except for transceiving operations, such as S2001 in the embodiment shown in fig. 20, and/or other processes for supporting the techniques described herein.

In some possible implementations, the communication device 2600 can correspondingly implement the behavior and functions of the network device in the above method embodiment, for example, implement the method performed by the network device in the embodiment of fig. 20. For example, the communication device 2600 may be a network device, a component (e.g., a chip or a circuit) applied to the network device, or a chip set in the network device or a part of the chip for performing the function of the related method. The transceiver module 2620 may be used to perform all receive or transmit operations performed by a network device in the embodiment shown in fig. 20, e.g., S2002, S2003, S2004 in the embodiment shown in fig. 20, and/or other processes for supporting the techniques described herein. Processing module 2010 is configured to perform all operations performed by the base station in the embodiment shown in fig. 20, except for transceiving operations, and/or other processes to support the techniques described herein.

It is to be understood that the processing module 2610 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component, and the transceiver module 2620 may be implemented by a transceiver or a transceiver-related circuit component or a communication interface.

As shown in fig. 27, a communication apparatus 2700 provided in this embodiment of the present application is provided, where the communication apparatus 2700 may be a terminal device and can implement a function of the terminal device in the method provided in this embodiment of the present application, or the communication apparatus 2700 may be a network device and can implement a function of the network device in the method provided in this embodiment of the present application; the communication device 2700 may also be a device capable of supporting a terminal device to implement the corresponding functions in the method provided in the embodiment of the present application, or a device capable of supporting a network device to implement the corresponding functions in the method provided in the embodiment of the present application. The communication device 2700 may be a system on a chip. In the embodiment of the present application, the chip system may be formed by a chip, and may also include a chip and other discrete devices.

In terms of hardware implementation, the transceiver module 2620 may be a transceiver, and the transceiver is integrated in the communication device 2700 to form the communication interface 2710.

The communications apparatus 2700 includes at least one processor 2720, which is configured to implement or support the communications apparatus 2700 to implement functions of a network device (base station) or a terminal device in the method provided by the embodiment of the present application. For details, reference is made to the detailed description in the method example, which is not repeated herein.

Communication device 2700 may also include at least one memory 2730 for storing program instructions and/or data. The memory 2730 is coupled with the processor 2720. The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, and may be an electrical, mechanical or other form for information interaction between the devices, units or modules. Processor 2720 may operate in conjunction with memory 2730. Processor 2720 may execute program instructions and/or data stored in memory 2730 to cause communication device 2700 to implement corresponding methods. At least one of the at least one memory may be included in the processor. Note that the memory 2730 is not essential, and is illustrated with a broken line in fig. 27.

Communication device 2700 may also include a communication interface 2710 for communicating with other devices over a transmission medium so that the device in communication device 2700 may communicate with other devices. Illustratively, when the communication device is a terminal, the other device is a network device; or, when the communication device is a network device, the other device is a terminal. Processor 2720 can send and receive data using communication interface 2710. Communication interface 2710 may specifically be a transceiver.

The embodiment of the present application does not limit the specific connection medium among the communication interface 2710, the processor 2720, and the memory 2730. In the embodiment of the present application, the memory 2730, the processor 2720, and the communication interface 2710 are connected through the bus 2740 in fig. 27, the bus is represented by a thick line in fig. 27, and the connection manner between other components is only schematically illustrated and is not limited thereto. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 27, but this is not intended to represent only one bus or type of bus.

In this embodiment, the processor 2720 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic blocks disclosed in this embodiment. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

In the embodiment of the present application, the memory 2730 may be a non-volatile memory, such as a Hard Disk Drive (HDD) or a solid-state drive (SSD), and may also be a volatile memory (RAM), for example, a random-access memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory in the embodiments of the present application may also be circuitry or any other device capable of performing a storage function for storing program instructions and/or data.

The communication device in the above embodiments may be a terminal or a circuit, or may be a chip applied to a terminal or other combined device or component having the above terminal function. When the communication device is a terminal, the transceiver module may be a transceiver, and may include an antenna, a radio frequency circuit, and the like, and the processing module may be a processor, for example: a Central Processing Unit (CPU). When the communication device is a component having the above terminal function, the transceiver module may be a radio frequency unit, and the processing module may be a processor. When the communication device is a chip system, the transceiver module may be an input/output interface of the chip system, and the processing module may be a processor of the chip system.

Fig. 28 shows a simplified schematic diagram of a communication device. For ease of understanding and illustration, fig. 28 illustrates a base station as an example of the communication device. The base station may be applied to the system shown in fig. 1, and may be the network device in fig. 1, and performs the functions of the network device in the foregoing method embodiments.

The communications device 2800 may include a transceiver 2810, a memory 2821, and a processor 2822. The transceiver 2810 can be used for communication by a communication device, such as for transmitting or receiving the first indication information, or capability information. The memory 2821 is coupled to the processor 2822 and may be used to store programs and data necessary for the communication device 2800 to perform various functions. The processor 2822 is configured to enable the communication apparatus 2800 to perform the corresponding functions of the above-described methods, which may be implemented by calling a program stored in the memory 2821.

In particular, the transceiver 2810 may be a wireless transceiver, and may be configured to support the communication apparatus 2800 to receive and transmit signaling and/or data over a wireless air interface. The transceiver 2810 may also be referred to as a transceiver unit or a communication unit, and the transceiver 2810 may include one or more radio frequency units 2812, such as Remote Radio Units (RRUs) or Active Antenna Units (AAUs), and one or more antennas 2811, which may be used for transmission of radio frequency signals and conversion of radio frequency signals to baseband signals, and which may be used for radiation and reception of radio frequency signals. Alternatively, the transceiver 2810 may include only the above radio frequency units, and then the communication apparatus 2800 may include the transceiver 2810, the memory 2821, the processor 2822 and the antenna 2811.

The memory 2821 and the processor 2822 may be integrated or may be independent of each other. As shown in fig. 28, the memory 2821 and the processor 2822 may be integrated with the control unit 2820 of the communication apparatus 2800. Illustratively, the control unit 2820 may include a baseband unit (BBU) of an LTE base station, which may also be referred to as a Digital Unit (DU), or the control unit 2810 may include a Distributed Unit (DU) and/or a Centralized Unit (CU) in a base station under 5G and future radio access technologies. The control unit 2820 may be formed by one or more antenna panels, where a plurality of antenna panels may support a radio access network (e.g., an LTE network) of a single access system together, and a plurality of antenna panels may also support radio access networks (e.g., an LTE network, a 5G network, or other networks) of different access systems respectively. The memory 2821 and processor 2822 may serve one or more antenna panels. That is, the memory 2821 and the processor 2822 may be separately provided on each antenna panel. The same memory 2821 and processor 2822 may be shared by multiple antenna panels. In addition, necessary circuitry may be located on each antenna panel, such as for coupling the memory 2821 and the processor 2822. The above transceivers 2810, processors 2822, and memories 2821 may be connected by a bus structure and/or other connection medium.

Based on the structure shown in fig. 28, when the communication device 2800 needs to transmit data, the processor 2822 may perform baseband processing on the data to be transmitted and output a baseband signal to the rf unit, and the rf unit performs rf processing on the baseband signal and then transmits the rf signal in the form of electromagnetic waves through the antenna. When data is transmitted to the communication device 2800, the radio frequency unit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 2822, and the processor 2822 converts the baseband signal into data and processes the data.

Based on the structure as shown in fig. 28, the transceiver 2810 can be used for performing the above steps performed by the transceiver module 2620. And/or, the processor 2822 may be used to invoke instructions in the memory 2821 to perform the steps performed by the processing module 2610 above.

Fig. 29 shows a simplified schematic configuration of a terminal device. For convenience of understanding and illustration, in fig. 29, the terminal device is exemplified by a mobile phone. As shown in fig. 29, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the vehicle-mounted unit, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by users and outputting data to the users. It should be noted that some kinds of apparatuses may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the device, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 29. In an actual device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the rf circuit with transceiving function may be regarded as a transceiving unit of the apparatus, and the processor with processing function may be regarded as a processing unit of the apparatus. As shown in fig. 29, the apparatus includes a transceiving unit 2910 and a processing unit 2920. The transceiving unit 2910 may also be referred to as a transceiver, a transceiving device, etc. The processing unit 2920 may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Alternatively, a device used for implementing the receiving function in the transceiving unit 2910 may be regarded as a receiving unit, and a device used for implementing the transmitting function in the transceiving unit 2910 may be regarded as a transmitting unit, that is, the transceiving unit 2910 includes a receiving unit and a transmitting unit. The transceiver unit 2910 may also be referred to as a transceiver, a transmitting/receiving circuit, or the like. A receiving unit may also be referred to as a receiver, or receiving circuit, etc. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be understood that the transceiving unit 2910 is configured to perform the transmitting operation and the receiving operation on the terminal device side in the foregoing method embodiments, and the processing unit 2920 is configured to perform other operations besides the transceiving operation on the terminal in the foregoing method embodiments.

For example, in one implementation, the transceiver 2910 may be used to perform S2002, S2003, S2004 in the embodiment shown in fig. 20, and/or other processes for supporting the techniques described herein.

When the communication device is a chip-like device or circuit, the device may include a transceiving unit and a processing unit. The transceiver unit may be an input/output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit.

The embodiment of the present application further provides a communication system, and specifically, the communication system includes a network device and a terminal device, or may further include more network devices and a plurality of terminal devices. Illustratively, the communication system includes a network device and a terminal device for implementing the related functions of fig. 20 described above.

The network devices are each configured to implement the functionality of the network portion described above in connection with fig. 20. The terminal device is configured to implement the functions of the terminal device related to fig. 20. Please refer to the related description in the above method embodiments, which is not repeated herein.

Also provided in an embodiment of the present application is a computer-readable storage medium, which includes instructions, which, when executed on a computer, cause the computer to perform the method performed by the network device in fig. 20; or when run on a computer, cause the computer to perform the method performed by the terminal device in fig. 20.

Also provided in an embodiment of the present application is a computer program product, which includes instructions that, when executed on a computer, cause the computer to perform the method performed by the network device in fig. 20; or cause a computer to perform the method performed by the terminal device in fig. 20 when it is run on the computer.

The embodiment of the application provides a chip system, which comprises a processor and a memory, and is used for realizing the functions of network equipment or a terminal in the method; or for implementing the functions of the network device and the terminal in the foregoing methods. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

It should be understood that the terms "system" and "network" in the embodiments of the present application may be used interchangeably. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a and b, a and c, b and c, or a, b and c, wherein a, b and c can be single or multiple.

And, unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing between a plurality of objects, and do not limit the sequence, timing, priority or importance of the plurality of objects. For example, the first non-frequency hopping transmission scheme and the second non-frequency hopping transmission scheme are not different in priority, importance, or the like of the two non-frequency hopping transmission schemes, but are merely to distinguish different non-frequency hopping transmission schemes.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply any order of execution, and the order of execution of the processes should be determined by their functions and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps (step) described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application 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 application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for transmitting an uplink channel, comprising:

determining a target transmission mode, and sending an uplink channel in the target transmission mode, wherein the target transmission mode is a first transmission mode, a second transmission mode or a third transmission mode; wherein, the first and the second end of the pipe are connected with each other,

the first transmission mode is as follows: sending a first hop of the uplink channel in an mth time unit, and sending a second hop of the uplink channel in an m + h time unit, where the first hop and the second hop belong to the same uplink channel, and a frequency domain resource used for sending the first hop is different from a frequency domain resource used for sending the second hop, where a last symbol in symbols used for sending the first hop is separated from a first symbol in symbols used for sending the second hop by X symbols, X is equal to P × n, P is the number of symbols included in the time unit, n is a positive integer, and m and h are positive integers;

the second transmission mode is as follows: sending a first hop of the uplink channel in an m-th time unit, sending a second hop of the uplink channel in an m + h time unit, wherein the first hop and the second hop belong to the same uplink channel, frequency domain resources used for sending the first hop are different from frequency domain resources used for sending the second hop, a last symbol in symbols used for sending the first hop is separated from a first symbol in symbols used for sending the second hop by X symbols, m is a positive integer, and h is 0 or a positive integer; the X is related to L and N, and/or the X is related to subcarrier spacing SCS; the L is the number of the symbols of the uplink channel, and the N is the number of the symbols or the maximum number of the symbols which can be adopted by the terminal equipment for frequency tuning;

the third transmission mode is as follows: sending a first hop of the uplink channel in m time units by using consecutive L1 symbols, sending a second hop of the uplink channel in m + h time units by using consecutive L2 symbols, where frequency domain resources used for sending the first hop are different from frequency domain resources used for sending the second hop, a first symbol of the L1 symbols in the m time unit is numbered as S1, a first symbol of the L2 symbols in the m + h time units is numbered as S2, m and h are positive integers, and S2 is an element in a first set, where the first set is any one of the following sets:

L2＝L-L1，

2. The method of claim 1, wherein,

when SCS corresponding to the uplink channel is smaller than a first threshold, X is equal to P;

when SCS corresponding to the uplink channel is greater than or equal to the first threshold, X is greater than or equal to 2 times of P; or, when the SCS corresponding to the uplink channel is greater than or equal to the first threshold, the number of symbols of the uplink channel is greater than or equal to the minimum number of symbols used for transmitting the uplink channel, and X is equal to P.

3. The method of claim 1, wherein the target transmission mode is the second transmission mode, and wherein X satisfies one or more of:

where L + N is less than or equal to P, said X = N or said X is greater than N;

in the case that L + N is greater than P, X is greater than or equal to P × N, and N is a positive integer; alternatively, the first and second electrodes may be,

in the case where L + N is greater than P × s and L + N is less than or equal to P × (s + 1), X is greater than or equal to P × s, s is a positive integer;

wherein, P is the number of symbols included in the time unit.

4. The method of claim 1, wherein the target transmission mode is the third transmission mode, h =1, and S2 satisfies:

in the case that P-2 xL 1 is greater than or equal to N, the S2 is an element in [ S1, S1+ L1, S1-L1 ];

in the case where P-L1 is greater than or equal to N and P-2 xL 1 is less than N, said S2 is an element in [ S1, S1+ L1 ];

in case P-L1 is smaller than N, said S2= S1+ L1.

5. The method of any one of claims 1-4, wherein determining a target transmission mode comprises:

determining the target transmission mode from a plurality of transmission modes, wherein the plurality of transmission modes further comprise one or more of non-frequency hopping transmission modes, frequency hopping transmission modes in time units and frequency hopping transmission modes between time units;

the non-frequency hopping transmission mode comprises the following steps: transmitting the uplink channel in a non-frequency hopping manner within a time unit;

the frequency hopping transmission mode among the time units is as follows: repeating E times to send an uplink channel, performing ith sending uplink channel A of the E times to send the uplink channel in an mth time unit, performing i +1 times to send the uplink channel B of the E times in an mth time unit, wherein the information carried by the uplink channel B is the repetition of the information carried by the uplink channel A, the number of the starting symbols used for sending the uplink channel A in the mth time unit is the same as the number of the starting symbols used for sending the uplink channel B in the mth time unit, the number of the symbols used for sending the uplink channel A in the mth time unit is the same as the number of the symbols used for sending the uplink channel B in the m + h time unit, the frequency domain resource used for sending the uplink channel A is different from the frequency domain resource used for sending the uplink channel B, and m and h are positive integers.

6. The method of claim 5, wherein determining the target transmission mode from a plurality of transmission modes comprises:

determining the target transmission mode from the multiple transmission modes based on a preset rule, wherein the preset rule is as follows: and the terminal equipment sends the uplink channel within a range exceeding a first bandwidth threshold, wherein the target transmission mode is the first transmission mode, the second transmission mode or the third transmission mode.

7. The method according to any of claims 1-6, wherein a starting frequency domain position of the frequency domain resources used for transmitting the first hop of the uplink channel in the m-th time unit is a first frequency domain position, a starting frequency domain position of the frequency domain resources used for transmitting the second hop of the uplink channel in the m + h time unit is a second frequency domain resource, wherein the first frequency domain position and/or the second frequency domain position is determined according to indication information from a network device, the indication information is used for indicating that the starting frequency domain position of the pre-configured frequency domain resources used for transmitting the first hop of the uplink channel is the second frequency domain position, and for indicating that the starting frequency domain position of the pre-configured frequency domain resources used for transmitting the second hop of the uplink channel is the first frequency domain position.

8. The method according to any of claims 1-7, wherein a terminal device repeatedly transmits an uplink channel R times, where R is a positive integer greater than or equal to 2, and information carried by the uplink channel at each time of the R repeated transmissions is the same, and in the R repeated transmissions, Q symbols are separated between a last symbol of a second hop for an i-th transmission of an uplink channel U and a first symbol of a first hop for an i + 1-th transmission of an uplink channel W, and the information carried by the uplink channel W is a repetition of the information carried by the uplink channel U;

and when the Q is greater than or equal to the N, the frequency domain resource of a first hop for transmitting the uplink channel W is different from the frequency domain resource of a second hop for transmitting the uplink channel U.

And under the condition that the Q is smaller than the N, the frequency domain resource of the first hop for sending the uplink channel W is the same as the frequency domain resource of the second hop for sending the uplink channel U.

9. The method of any one of claims 1-8, further comprising:

10. A method for transmitting an uplink channel, comprising:

wherein R is a positive integer greater than or equal to 2, and the fourth transmission mode is: the information carried by the uplink channel sent each time in the R times of repeated sending is the same, the ith sending uplink channel W of the repeated R times sending uplink channel is performed in the mth time unit, the (i + 1) th sending uplink channel U of the repeated R times sending uplink channel is performed in the (m + h) th time unit, the information carried by the uplink channel U is the repetition of the information carried by the uplink channel W, the number of the starting symbol used for sending the uplink channel W in the mth time unit is the same as the number of the starting symbol used for sending the uplink channel U in the (m + h) th time unit, the number of the symbols used for sending the uplink channel W in the mth time unit is the same as the number of the symbols used for sending the uplink channel U in the (m + h) th time unit, the frequency domain resource used for sending the uplink channel W is different from the frequency domain resource used for sending the uplink channel U, and m and h are positive integers.

11. The method of claim 10, wherein the terminal device determining the target transmission mode comprises:

if the interval between the last symbol of the uplink channel W sent at the ith time and the first symbol of the uplink channel U sent at the (i + 1) th time is greater than or equal to N, the R is equal to the E;

if the interval between the last symbol of the uplink channel W sent in the ith time and the first symbol of the uplink channel U sent in the (i + 1) th time is less than N, the R is equal to 2 times of the E;

wherein, the N represents that the terminal equipment performs frequency tuning in N symbols.

12. The method of claim 10 or 11, wherein the Msg3PUSCH is: and in the random access process, downlink control information DCI used for scheduling the Msg3PUSCH or random access uplink authorization RAR UL grant indicates the Msg3PUSCH sent in a frequency hopping mode.

13. A method for receiving an uplink channel, comprising

Generating first indication information and sending the first indication information to terminal equipment, wherein the first indication information is used for indicating a target transmission mode, and the target transmission mode is a first transmission mode, a second transmission mode or a third transmission mode; wherein the content of the first and second substances,

the first transmission mode is as follows: sending a first hop of the uplink channel in an mth time unit, sending a second hop of the uplink channel in an m + h time unit, where the first hop and the second hop belong to the same uplink channel, and frequency domain resources used for sending the first hop are different from frequency domain resources used for sending the second hop, where X symbols are spaced between a last symbol in symbols used for sending the first hop and a first symbol in symbols used for sending the second hop, X is equal to P × n, P is the number of symbols included in the time unit, n is a positive integer, and m and h are positive integers;

L2＝L-L1，

14. The method of claim 13, wherein X is equal to P in case the SCS corresponding to the uplink channel is less than a first threshold;

15. The method of claim 13, wherein the target transmission mode is the second transmission mode, and wherein X satisfies one or more of:

where L + N is less than or equal to P, said X = N or said X is greater than N;

in the case where L + N is greater than P × s and L + N is less than or equal to P × (s + 1), said X is greater than or equal to P × s, s being a positive integer;

wherein, P is the number of symbols included in the time unit.

16. The method of claim 13, wherein the target transmission mode is the third transmission mode, wherein h =1, and wherein S2 satisfies:

in the case that P-L1 is greater than or equal to N and P-2 xL 1 is less than N, the S2 is an element in [ S1, S1+ L1 ];

in case P-L1 is smaller than N, said S2= S1+ L1.

17. The method of any one of claims 13-16, further comprising:

and receiving capability information from the terminal equipment, wherein the capability information is used for indicating whether the terminal equipment supports one or more transmission modes of the first transmission mode, the second transmission mode and the third transmission mode.

18. A method for transmitting an uplink channel, comprising:

generating third indication information, and sending the third indication information to a terminal device, where the third indication information is used to indicate the terminal device to send an uplink channel repeatedly R times in a target transmission mode, where the target transmission mode includes a fourth transmission mode, and the uplink channel includes at least one of the following: a message 3 physical uplink shared channel Msg3PUSCH in the random access process, a physical uplink control channel PUCCH for sending hybrid automatic repeat request HARQ feedback information for the physical downlink shared channel PDSCH carrying the contention resolution identity of the terminal device;

19. The method of claim 18, wherein the third indication information is used for indicating a repetition number E, and the R and the E satisfy the following relationship:

if the interval between the last symbol of the uplink channel W sent in the ith time and the first symbol of the uplink channel U sent in the (i + 1) th time is larger than or equal to N, the R is equal to the E;

if the interval between the last symbol of the uplink channel W sent at the ith time and the first symbol of the uplink channel U sent at the (i + 1) th time is less than N, the R is equal to 2 times of the E;

20. The method of claim 18 or 19, wherein the Msg3PUSCH is: and in the random access process, downlink control information DCI used for scheduling the Msg3PUSCH or random access uplink authorization RAR UL grant indicates the Msg3PUSCH sent in a frequency hopping mode.

21. A communication device, comprising a processor and a communication interface, and a memory, the processor coupled with the communication interface for invoking computer instructions in the memory to cause the communication device to perform the method of any one of claims 1-9.

22. A communication device, comprising a processor and a communication interface, and a memory, the processor coupled with the communication interface for invoking computer instructions in the memory to cause the communication device to perform the method of any one of claims 10-12.

23. A computer-readable storage medium having computer instructions stored thereon that, when executed, cause the computer to perform the method of any of claims 1-9.

24. A computer-readable storage medium having stored thereon computer instructions which, when executed, cause the computer to perform the method of any one of claims 10-12.