CN115913828A

CN115913828A - Communication method and device

Info

Publication number: CN115913828A
Application number: CN202111159610.2A
Authority: CN
Inventors: 花梦
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-04-04
Also published as: WO2023051201A1

Abstract

The application provides a communication method and a device, and the method comprises the following steps: the terminal equipment acquires the number of DMRS groups contained in a time unit, wherein the DMRS groups are DMRS groups of a physical uplink channel; the terminal equipment determines the number of the time units contained in a time window according to the number of the DMRS groups contained in the time units, and the phase in the time window is continuous or the average transmission power is unchanged; and the terminal equipment transmits the physical uplink channel in the time window. According to the method and the device provided by the application, the terminal equipment flexibly determines the number of the time units which need to keep continuous phase or unchanged average transmission power according to the number of the DMRSs contained in the time units, so that the performance of signal transmission can be improved.

Description

Communication method and device

Technical Field

The present application relates to the field of communications, and more particularly, to a parameter indication method and apparatus.

Background

Currently, each repetition performs channel estimation using only its own demodulation reference signal (DMRS). In order to enhance uplink coverage, it may be considered to improve the quality of channel estimation, and specifically, it may be considered to perform filtering for a longer time in the time domain. One possible implementation way to perform channel estimation by combining multiple repeated DMRSs is to ensure that the phase between the repetitions is continuous or the average transmission power is not changed. In order to keep the average transmission power unchanged for one of the above repetitions, if the channel quality is degraded, the performance of the base station for receiving signals is also degraded, and if the channel quality is improved, the interference to other transmissions is increased. Therefore, how to improve the performance of signal transmission becomes an urgent problem to be solved when the channel quality of a plurality of time units for performing joint channel estimation changes rapidly.

Disclosure of Invention

The application provides a communication method and device, wherein the number of DMRS groups in a time cell is acquired by a terminal device, so that the number of the time cells contained in a time window is flexibly determined according to the number, namely the number of the time cells which need to keep continuous phase or unchanged average transmission power is flexibly determined, the performance of signal transmission can be improved under the condition of fast channel quality change, and the problems of deterioration of uplink transmission performance or interference on other transmissions are reduced. In addition, the number of the time units contained in one time window is determined according to the number, so that the performance benefit of the joint channel estimation relative to the channel estimation of each time unit can be improved as much as possible.

In a first aspect, a communication method is provided, including: the terminal equipment acquires the number of DMRS groups contained in a time unit, wherein the DMRS groups are DMRS groups of a physical uplink channel; the terminal equipment determines the number of the time units contained in a time window according to the number of the DMRS groups contained in the time units, and the phase in the time window is continuous or the average transmission power is unchanged; and the terminal equipment transmits the physical uplink channel in the time window.

It should be understood that the continuous or constant average transmission power of the phase in the time window means the continuous or constant average transmission power of the phase of the physical uplink channel in the time window, or the continuous or constant average transmission power of the phase of the DM-RS of the physical uplink channel and the physical uplink channel in the time window.

Compared with the prior art, the number of the DMRS groups contained in one time cell is not considered when the number of the time cells contained in one time window is determined, and the number of the DMRS groups contained in one time cell is considered when the number of the time cells contained in one time window is determined by the scheme, so that the number of the time cells contained in one time window is more flexible, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problem that the performance of uplink transmission is poor or the interference on other transmissions is increased is solved.

With reference to the first aspect, in some implementations of the first aspect, the determining, by the terminal device, the number of time elements included in a time window according to the number of DMRS groups included in the time element includes:

and the terminal equipment determines the number of the time units contained in the time window according to the mapping relation between the number of the DMRS groups contained in the time units and the number of the time units contained in the time window.

For example, the protocol preset or base station configuration mapping relationship may be as shown in table 1:

TABLE 1

With reference to the first aspect, in certain implementations of the first aspect, the mapping relationship between the number of DMRS groups contained in the time element and the number of time elements contained in the time window is contained in a one-to-one mapping or a many-to-one mapping relationship between a plurality of candidate values of the number of DMRS groups contained in the time element and a plurality of candidate values of the number of time elements contained in the time window.

With reference to the first aspect, in some implementations of the first aspect, the determining, by the terminal device, the number of time elements included in a time window according to the number of DMRS groups included in the time element includes: the terminal equipment determines the number of the time units contained in the time window according to a first number and the number of the DMRS groups contained in the time units, wherein the first number is the number of the DMRS groups used for determining the physical uplink channel in the time window.

According to the scheme, the terminal equipment acquires the number of the DMRS groups used for determining the physical uplink channel in the time window, so that the number of the time units contained in one time window can be flexibly determined according to the number and the number of the DMRSs contained in the time units, namely the number of the time units with continuous phases or unchanged average transmission power can be flexibly determined, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problems that the uplink transmission performance is poor or other transmissions are interfered are reduced. In addition, the number of time elements included in one time window is determined according to the number and the number of DMRSs included in the time elements, so that the performance benefit of the joint channel estimation for each time element can be improved as much as possible.

With reference to the first aspect, in certain implementations of the first aspect, the first number is preset, or the first number is received by the terminal device from the network device.

With reference to the first aspect, in certain implementations of the first aspect, the time unit includes one of: one physical uplink channel repetition, one or more time slots, one or more orthogonal frequency division multiplexing, OFDM, symbols. The physical uplink channel may be a Physical Uplink Shared Channel (PUSCH) or a Physical Uplink Control Channel (PUCCH). A PUSCH repetition may be a PUSCH nominal repetition or a PUSCH actual repetition without cancelling the transmission.

With reference to the first aspect, in certain implementations of the first aspect, the number of DMRS groups contained in the time window is greater than or equal to the first number.

With reference to the first aspect, in certain implementations of the first aspect, the number of time units included in the time window is

Wherein it is present>

Presentation pair/>

Rounding up, N is the first number, k is the number of DMRS groups contained in the time unit, and k is a positive integer. k may be the number of nominal DMRS groups contained in one time element or the number of actual DMRS groups contained in one time element.

With reference to the first aspect, in certain implementation manners of the first aspect, the determining, by the terminal device, the number of time units included in the time window according to the first number and the number of DMRS groups included in the time unit includes: and the terminal equipment determines the number of the time units contained in the time window according to the first number, the number of the DMRS groups contained in the time units and first information, wherein the first information indicates M, M is a positive integer, and the number of the time units contained in the time window is less than or equal to M.

With reference to the first aspect, in certain implementations of the first aspect, the number of the time units included in the time window is M in the case that M · k < N, or M · k ≧ N

And k is the number of DMRS groups contained in the time unit, k is a positive integer, and N is the first number. It should be understood that when M · k = N, then>

This implementation is therefore equivalent to the number of time units contained within the time window being M, in the case of M · k < = N, or M · k < = N>N, the number of time units contained in the time window is ^ greater or less>

And k is the number of DMRS groups contained in the time unit, k is a positive integer, and N is the first number.

According to the scheme, the maximum value of the number of the time units contained in the time window is further limited by taking the first information into account on the basis of determining the number of the time units contained in the time window according to the first number and the number of the DMRS groups contained in the time units, so that the number of the time units contained in one time window is determined more flexibly, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problem of the deterioration of uplink transmission performance or the increase of interference on other transmissions is solved.

With reference to the first aspect, in some implementation manners of the first aspect, the obtaining, by the terminal device, the first number includes: the terminal equipment determines the first quantity according to a mapping relation between second information and the first quantity, wherein the second information comprises at least one of the following parameters: the physical uplink channel repetition type, the physical uplink channel mapping type, the number of symbols of the physical uplink channel in a time unit, the single/double symbols of the DMRS of the physical uplink channel, the DMRS additional position parameter of the physical uplink channel, and the format of the physical uplink channel.

With reference to the first aspect, in some implementations of the first aspect, the mapping relationship between the second information and the first number is included in a one-to-one mapping relationship or a many-to-one mapping relationship between a plurality of candidate values of the second information and a plurality of candidate values of the first number.

According to the scheme, the second information can contain dynamically configured information, the mapping relation between the second information and the first quantity is configured in the RRC signaling, and the first quantity is determined according to the second information and the mapping relation obtained through dynamic configuration, so that dynamic issuing of the first quantity is avoided, the overhead of physical layer signaling is reduced, the spectrum utilization efficiency is improved, and meanwhile, the second information contains the dynamically configured information, so that the method can also obtain the effect of dynamically configuring the first quantity.

In a second aspect, a communication method is provided, including: the method comprises the steps that network equipment informs terminal equipment of the number of DMRS groups contained in time units so that the terminal equipment can determine the number of the time units contained in a time window, and the phase in the time window is continuous or the average transmission power is unchanged; the network device receives the physical uplink channel from the terminal device.

According to the scheme, the number of the DMRS groups included in the time cell is indicated to the terminal equipment through the network equipment, so that the terminal equipment can flexibly determine the number of the time cells included in one time window according to the number, namely flexibly determine the number of the time cells needing to keep continuous phase or unchanged transmission power, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problem that the performance of uplink transmission is poor or other transmissions are interfered is reduced. In addition, the number of the time units contained in one time window is determined according to the number, so that the performance benefit of the joint channel estimation relative to the channel estimation of each time unit can be improved as much as possible.

With reference to the second aspect, in certain implementations of the second aspect, the time unit includes one of: one physical uplink channel repetition, one or more time slots, one or more orthogonal frequency division multiplexing, OFDM, symbols.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: and the network equipment sends the mapping relation between the number of the DMRS groups contained in the time cells and the number of the time cells contained in the time window to the terminal equipment.

With reference to the second aspect, in some implementations of the second aspect, the network device sends, to the terminal device, a first number, where the first number is a number of demodulation reference signal, DMRS, groups used for determining a physical uplink channel in a time window.

According to the scheme, the network equipment indicates the number of the DMRS groups used for determining the physical uplink channel in the time window to the terminal equipment, so that the terminal equipment can flexibly determine the number of the time units contained in one time window according to the number and the number of the DMRS contained in the time units, namely flexibly determine the number of the time units with continuous phases or unchanged average transmission power, improve the performance of signal transmission under the condition of fast change of channel quality, and reduce the problem of deterioration of uplink transmission performance or increase of interference on other transmissions. In addition, the number of time elements contained in one time window is determined according to the number and the number of DMRSs contained in the time elements, so that the performance benefit of joint channel estimation for each time element can be improved as much as possible.

With reference to the second aspect, in certain implementations of the second aspect, the number of DMRS groups contained in the time window is greater than or equal to the first number.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the network device sends first information to the terminal device, the first information indicates M, M is a positive integer, and the number of the time units contained in the time window is less than or equal to M.

According to the scheme, the first information is indicated to the terminal equipment, so that the terminal equipment considers the first information when determining the number of the time units contained in the time window, the maximum value of the number of the time units contained in the time window is further limited, the number of the time units contained in one time window is determined more flexibly, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problem that the uplink transmission performance is poor or other transmission interference is increased is solved.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: the network equipment sends second information to the terminal equipment, wherein the second information comprises at least one of the following parameters: the physical uplink channel repetition type, the physical uplink channel mapping type, the number of symbols of the physical uplink channel in a time unit, the single/double symbols of the DMRS of the physical uplink channel, the DMRS additional position parameter of the physical uplink channel, the format of the physical uplink channel, and the second information having a mapping relationship with the first number.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: and the network equipment sends the mapping relation between the second information and the first quantity to the terminal equipment.

With reference to the second aspect, in some implementations of the second aspect, the mapping relationship between the second information and the first number is included in a one-to-one mapping relationship or a many-to-one mapping relationship between a plurality of candidate values of the second information and a plurality of candidate values of the first number.

According to the scheme, the second information can comprise dynamically configured information, the mapping relation between the second information and the first quantity is configured in the RRC signaling, and the first quantity is determined according to the second information and the mapping relation obtained by the dynamic configuration, so that the first quantity is prevented from being dynamically issued, the overhead of physical layer signaling is reduced, the spectrum utilization efficiency is improved, and meanwhile, the second information comprises the dynamically configured information, so that the method can also obtain the effect of dynamically configuring the first quantity.

In a third aspect, a communication method is provided, including: the terminal device determines the second number according to a mapping relation between second information and the second number, the second number is used for determining the number of time units in a time window, the phase in the time window is continuous or the average transmission power is unchanged, and the second information comprises at least one of the following parameters: the physical uplink channel repetition type, the physical uplink channel mapping type, the number of symbols of the physical uplink channel in a time unit, single/double symbols of the DMRS of the physical uplink channel, the DMRS additional position parameter of the physical uplink channel, and the format of the physical uplink channel, where the physical uplink channel is a physical uplink channel transmitted by the terminal device; the terminal equipment determines the number of time units contained in the time window according to the second number; and the terminal equipment transmits the physical uplink channel in the time window.

According to the scheme, the network equipment indicates at least 2 candidate values of the number of the time units to the terminal equipment, the number of the time units is associated with the plurality of candidate values affecting the transmission parameters of the DMRS, and the terminal equipment determines the number of the time units contained in the time window according to the association relation and the transmission parameters affecting the DMRS used by the current physical uplink channel, so that the network equipment can more flexibly indicate the time units needing to keep continuous phases or unchanged average transmission power, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problem of uplink transmission performance deterioration or other transmission interference increase can be reduced.

With reference to the third aspect, in certain implementations of the third aspect, the time unit includes one of: one physical uplink channel repetition, one or more time slots, one or more orthogonal frequency division multiplexing, OFDM, symbols.

With reference to the third aspect, in some implementations of the third aspect, the mapping relationship between the second information and the second number is included in a one-to-one mapping relationship or a many-to-one mapping relationship between a plurality of candidate values of the second information and a plurality of candidate values of the second number.

In a fourth aspect, a communication method is provided, including: the network device sends a second number to the terminal device, where the second number is a number used for determining time units in a time window, a phase in the time window is continuous or an average sending power is not changed, the second number has a mapping relation with second information, and the second information includes at least one of the following parameters: the physical uplink channel repetition type, the physical uplink channel mapping type, the number of symbols of the physical uplink channel in a time unit, the single/double symbols of the DMRS of the physical uplink channel, the DMRS additional position parameter of the physical uplink channel, and the format of the physical uplink channel, where the physical uplink channel is a physical uplink channel transmitted by the terminal device; the network device receives the physical uplink channel from the terminal device.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the time unit includes one of: one physical uplink channel repetition, one or more time slots, one or more orthogonal frequency division multiplexing, OFDM, symbols.

With reference to the fourth aspect, in some implementations of the fourth aspect, the mapping relationship between the second information and the second quantity is included in a one-to-one mapping relationship or a many-to-one mapping relationship between a plurality of candidate values of the second information and a plurality of candidate values of the second quantity.

In a fifth aspect, a communication apparatus is provided, including: an obtaining module, configured to obtain the number of DMRS groups included in a time unit; a processing module, configured to determine the number of the time elements included in a time window according to the number of DMRS groups included in the time elements, where a phase in the time window is continuous or an average transmission power is unchanged; and the transceiver module is used for transmitting the physical uplink channel in the time window.

According to the scheme, the terminal equipment acquires the number of the DMRS groups in the time unit, so that the number of the time units contained in one time window can be flexibly determined according to the number, namely the number of the time units with continuous phases or unchanged sending power can be flexibly determined, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problems that the performance of uplink transmission is poor or other transmission interferences are increased are solved. In addition, the number of the time units contained in one time window is determined according to the number, so that the performance benefit of the joint channel estimation relative to the channel estimation of each time unit can be improved as much as possible.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the processing module is specifically configured to determine the number of time elements included in the time window according to a mapping relationship between the number of DMRS groups included in the time elements and the number of time elements included in the time window.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the mapping relationship between the number of DMRS groups contained in the time cell and the number of time cells contained in the time window is contained in a one-to-one mapping or a many-to-one mapping relationship between a plurality of candidate values for the number of DMRS groups contained in the time cell and a plurality of candidate values for the number of time cells contained in the time window.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the processing module is configured to determine the number of time elements included in the time window according to a first number and the number of DMRS groups included in the time elements, where the first number is the number of DMRS groups used to determine a physical uplink channel in the time window.

According to the scheme, the terminal equipment acquires the number of the DMRS groups used for determining the physical uplink channel in the time window, so that the number of the time units contained in one time window can be flexibly determined according to the number and the number of the DMRSs contained in the time units, namely the number of the time units with continuous phases or unchanged sending power can be flexibly determined, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problems that the uplink transmission performance is poor or other transmissions are interfered are reduced. In addition, the number of time elements included in one time window is determined according to the number and the number of DMRSs included in the time elements, so that the performance benefit of the joint channel estimation for each time element can be improved as much as possible.

With reference to the fifth aspect, in some implementations of the fifth aspect, the first number is preset, or the first number is received by the terminal device from the network device.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the time unit includes one of: one physical uplink channel repetition, one or more time slots, one or more orthogonal frequency division multiplexing, OFDM, symbols. The physical uplink channel may be a Physical Uplink Shared Channel (PUSCH) or a Physical Uplink Control Channel (PUCCH). A PUSCH repetition may be a PUSCH nominal repetition or a PUSCH actual repetition without cancelling the transmission.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the number of DMRS groups contained in the time window is greater than or equal to the first number.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the time window includes the number of time units

Wherein it is present>

Represents a pair->

Rounding up, where N is the first number, k is the number of DMRS groups contained in the time element, and k is a positive integer. k may be the number of nominal DMRS groups contained in one time element or the number of actual DMRS groups contained in one time element.

According to the scheme, the maximum value of the number of the time units contained in the time window is further limited by taking the first information into account when the number of the time units contained in the time window is determined, so that the number of the time units keeping continuous phases or unchanged transmitting power can be further reduced, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problems that the performance of uplink transmission is poor or other transmissions are interfered are reduced.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the processing module is specifically configured to determine the number of the time elements included in the time window according to the first number, the number of DMRS groups included in the time element, and first information, where the first information indicates M, M is a positive integer, and the number of the time elements included in the time window is less than or equal to M.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the number of time units included in the time window is M in the case that M · k < N, or M · k ≧ N

So this implementation is equivalent to the number of time units contained within the time window being M, in case M · k < = N, or M · k < = N>N, the number of time units contained in the time window is ^ greater or less>

Wherein k is the number of DMRS groups contained in the time unit, k is a positive integer, and N is the first number.

With reference to the fifth aspect, in some implementations of the fifth aspect, the processing module is specifically configured to determine the first number according to a mapping relationship between second information and the first number, where the second information includes at least one of the following parameters: the physical uplink channel repetition type, the physical uplink channel mapping type, the number of symbols of the physical uplink channel in a time unit, the single/double symbols of the DMRS of the physical uplink channel, the DMRS additional position parameter of the physical uplink channel, and the format of the physical uplink channel.

With reference to the fifth aspect, in some implementations of the fifth aspect, the mapping relationship between the second information and the first number is included in a one-to-one mapping relationship or a many-to-one mapping relationship between a plurality of candidate values of the second information and a plurality of candidate values of the first number.

In a sixth aspect, a communication apparatus is provided, including: a transceiver module, configured to notify a terminal device of the number of DMRS groups contained in a time element, so that the terminal device determines the number of the time elements contained in a time window, where a phase in the time window is continuous or an average transmission power is unchanged; the transceiver module is further configured to receive the physical uplink channel from the terminal device.

According to the scheme, the number of the DMRS groups in the time cell is indicated to the terminal equipment through the network equipment, so that the terminal equipment can flexibly determine the number of the time cells contained in one time window according to the number, namely flexibly determine the number of the time cells needing to keep continuous phase or unchanged transmission power, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problems that the performance of uplink transmission is poor or other transmissions are interfered are reduced. In addition, the number of the time units contained in one time window is determined according to the number, so that the performance benefit of the joint channel estimation relative to the channel estimation of each time unit can be improved as much as possible.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the time cell includes one of: one physical uplink channel repetition, one or more time slots, one or more orthogonal frequency division multiplexing, OFDM, symbols.

With reference to the sixth aspect, in some implementations of the sixth aspect, the transceiver module is configured to send, to the terminal device, a first number, where the first number is a number of DMRS groups used for determining a physical uplink shared channel physical uplink channel in a time window.

According to the scheme, the number of the DMRS groups used for determining the physical uplink channel in the time window is indicated to the terminal equipment through the network equipment, so that the terminal equipment can flexibly determine the number of the time units contained in one time window according to the number and the number of the DMRSs contained in the time units, namely flexibly determine the number of the time units with continuous phases or unchanged transmission power, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problem that the uplink transmission performance deteriorates or the interference on other transmissions is increased is solved. In addition, the number of time elements contained in one time window is determined according to the number and the number of DMRSs contained in the time elements, so that the performance benefit of joint channel estimation for each time element can be improved as much as possible.

With reference to the sixth aspect, in some implementations of the sixth aspect, the transceiver module is further configured to send, to the terminal device, a mapping relationship between the number of DMRS groups contained in the time element and the number of time elements contained in the time window.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the number of DMRS groups contained in the time window is greater than or equal to the first number.

With reference to the sixth aspect, in some implementations of the sixth aspect, the transceiver module is further configured to send first information to the terminal device, where the first information indicates M, M is a positive integer, and the number of time units included in the time window is less than or equal to M.

According to the scheme, the first information is indicated to the terminal equipment, so that the terminal equipment considers the first information when determining the number of the time units contained in the time window, the maximum value of the number of the time units contained in the time window is further limited, the number of the time units with continuous phases or unchanged sending power can be further reduced, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problem that the uplink transmission performance is poor or other transmission interference is increased is solved.

With reference to the sixth aspect, in some implementations of the sixth aspect, the transceiver module is further configured to send second information to the terminal device, where the second information includes at least one of the following parameters: the physical uplink channel repetition type, the physical uplink channel mapping type, the number of symbols of the physical uplink channel in a time unit, the single/double symbols of the DMRS of the physical uplink channel, the DMRS additional position parameter of the physical uplink channel, the format of the physical uplink channel, and the second information having a mapping relationship with the first number.

With reference to the sixth aspect, in some implementations of the sixth aspect, the transceiver module is further configured to send, to the terminal device, a mapping relationship between second information and the first number.

With reference to the sixth aspect, in some implementations of the sixth aspect, the mapping relationship between the second information and the first number is included in a one-to-one mapping relationship or a many-to-one mapping relationship between a plurality of candidate values of the second information and a plurality of candidate values of the first number.

According to the scheme, the second information is information which needs to be configured originally, the second information can contain dynamic configuration information, the mapping relation between the second information and the first quantity is configured in the RRC signaling, the first quantity is determined according to the second information obtained through dynamic configuration and the mapping relation, the dynamic issuing of the first quantity is avoided, the overhead of physical layer signaling is reduced, the spectrum utilization efficiency is improved, and meanwhile, the second information contains the dynamic configuration information, so that the method can obtain the effect of dynamically configuring the first quantity.

In a seventh aspect, a communication method is provided, including: the terminal device determines the second number according to a mapping relation between second information and the second number, the second number is used for determining the number of time units in a time window, the phase in the time window is continuous or the average transmission power is unchanged, and the second information comprises at least one of the following parameters: the physical uplink channel repetition type, the physical uplink channel mapping type, the number of symbols of the physical uplink channel in a time unit, single/double symbols of the DMRS of the physical uplink channel, the DMRS additional position parameter of the physical uplink channel, and the format of the physical uplink channel, where the physical uplink channel is a physical uplink channel transmitted by the terminal device; the terminal equipment determines the number of time units contained in the time window according to the second number; and the terminal equipment transmits the physical uplink channel in the time window.

According to the scheme, the network equipment indicates at least 2 candidate values of the number of the time units to the terminal equipment, the number of the time units is associated with the plurality of candidate values influencing the transmission parameters of the DMRS, and the terminal equipment determines the number of the time units contained in the time window according to the association relation and the transmission parameters influencing the DMRS used by the current physical uplink channel, so that the network equipment can more flexibly indicate the time units needing to keep continuous phases or unchanged average transmission power, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problem of uplink transmission performance deterioration or other transmission interference increase can be solved.

With reference to the seventh aspect, in certain implementations of the seventh aspect, the time unit includes one of: one physical uplink channel repetition, one or more time slots, one or more orthogonal frequency division multiplexing, OFDM, symbols.

With reference to the seventh aspect, in some implementations of the seventh aspect, the mapping relationship between the second information and the second quantity is included in a one-to-one mapping relationship or a many-to-one mapping relationship between a plurality of candidate values of the second information and a plurality of candidate values of the second quantity.

In an eighth aspect, a communication method is provided, including: the network device sends a second number to the terminal device, where the second number is a number used for determining time units in a time window, a phase in the time window is continuous or an average sending power is not changed, the second number has a mapping relation with second information, and the second information includes at least one of the following parameters: the physical uplink channel repetition type, the physical uplink channel mapping type, the number of symbols of the physical uplink channel in a time unit, the single/double symbols of the DMRS of the physical uplink channel, the DMRS additional position parameter of the physical uplink channel, and the format of the physical uplink channel, where the physical uplink channel is a physical uplink channel transmitted by the terminal device; the network device receives the physical uplink channel from the terminal device.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the time unit includes one of: one physical uplink channel repetition, one or more time slots, one or more orthogonal frequency division multiplexing, OFDM, symbols.

With reference to the eighth aspect, in some implementations of the eighth aspect, the mapping relationship between the second information and the second number is included in a one-to-one mapping relationship or a many-to-one mapping relationship between a plurality of candidate values of the second information and a plurality of candidate values of the second number.

In a ninth aspect, there is provided a communication apparatus comprising: a processor and a memory; the memory for storing a computer program; the processor is configured to execute the computer program stored in the memory to enable the communication apparatus to perform the communication method according to any one of the first aspect to the fourth aspect.

A tenth aspect provides a computer-readable storage medium having stored thereon a computer program which, when run on a computer, causes the computer to perform the communication method according to any one of the first to fourth aspects.

In an eleventh aspect, there is provided a chip system comprising: a processor for calling and running the computer program from the memory so that the communication device on which the system-on-chip is installed performs the communication method according to any one of the first to fourth aspects.

Drawings

Fig. 1 is a diagram of a wireless communication system 100 suitable for use in embodiments of the present application.

Fig. 2 shows a schematic diagram of two repetition types of PUSCH and transmission blocks across multiple slots.

Fig. 3 shows a schematic diagram of an example of the positions of four DMRS groups in PUSCH.

Fig. 4 shows a schematic block diagram of modules related to an embodiment of the present application.

Fig. 5 is a schematic interaction diagram of the method 100 of the present application.

Fig. 6 is a schematic interaction diagram of a method 200 of the present application.

FIG. 7 is a schematic block diagram illustrating one example of determining a time unit encompassed by a time window in accordance with the method 200 of the present application.

FIG. 8 is a schematic block diagram illustrating yet another example of determining a time unit encompassed by a time window in accordance with the method 200 of the present application.

FIG. 9 is a schematic block diagram illustrating yet another example of determining time units encompassed by a time window in accordance with the method 200 of the present application.

Fig. 10 is a schematic interaction diagram of a method 300 of the present application.

FIG. 11 is a schematic block diagram illustrating one example of determining time units encompassed by a time window in accordance with the method 300 of the present application.

FIG. 12 is a schematic block diagram illustrating yet another example of determining time units encompassed by a time window in accordance with the method 300 of the present application.

FIG. 13 is a schematic block diagram illustrating yet another example of determining time units encompassed by a time window in accordance with the method 300 of the present application.

Fig. 14 is a schematic interaction diagram of a method 400 of the present application.

Fig. 15 is a schematic block diagram for a communication device provided in an embodiment of the present application.

Fig. 16 is a schematic diagram of a communication device 20 according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: fifth generation (5 th generation,5 g) systems or New Radio (NR), long Term Evolution (LTE) systems (e.g., LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD)), and so on. In addition, the technical scheme of the embodiment of the application can also be applied to side link communication. For example, the technical solutions of the embodiments of the present application may also be applied to: device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine Type Communication (MTC), and communication in a car networking system.

For the understanding of the embodiments of the present application, a communication system suitable for the embodiments of the present application will be described first with reference to fig. 1.

Fig. 1 is a diagram of a wireless communication system 100 suitable for use in embodiments of the present application. As shown in fig. 1, the wireless communication system 100 may include at least one network device,

such as network device 111 shown in fig. 1, the wireless communication system 100 may further include at least one terminal device, such as terminal device 121 shown in fig. 1. The network equipment and the terminal equipment can be both provided with a plurality of antennas, and the network equipment and the terminal equipment can communicate by using a multi-antenna technology.

When the network device communicates with the terminal device, the network device may manage one or more cells, and an integer number of terminal devices may be in one cell. Optionally, the network device 111 and the terminal device 121 form a single-cell communication system, and a cell is denoted as cell #1 without loss of generality. Network device 111 may be a network device in cell #1, or network device 111 may serve a terminal device (e.g., terminal device 121) in cell #1.

It should be noted that a cell may be understood as an area within the wireless signal coverage of a network device.

The sending end device mentioned in the embodiment of the present application may be a terminal device, and the receiving end device may be a network device. For example, the sending end device is the terminal device 121, and the receiving end device is the network device 111.

It should be understood that fig. 1 is merely an exemplary illustration and the present application is not limited thereto. For example, the embodiments of the present application can also be applied to any communication scenario in which data (or data blocks) needs to be repeatedly transmitted.

It should also be understood that the network device in the wireless communication system may be any device having a wireless transceiving function. Such devices include, but are not limited to: an evolved Node B (eNB) Node B (Node B, NB), a home base station (e.g., home evolved Node B or home Node B, HNB), a baseband unit (BBU), an Access Point (AP), a wireless relay Node, a wireless backhaul Node, a Transmission Point (TP) or a Transmission and Reception Point (TRP) in a wireless fidelity (WIFI) system, etc., and may also be 5G, such as NR, a gNB in a system, or a transmission point (TRP or TP), one or a group (including multiple antenna panels) of antenna panels of a base station in a 5G system, or may also be a network Node constituting a gNB or a transmission point, such as a baseband unit (BBU), or a Distributed Unit (DU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. The gNB may further include an Active Antenna Unit (AAU). The CU implements part of the function of the gNB, and the DU implements part of the function of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implements functions of a Radio Resource Control (RRC) layer and a Packet Data Convergence Protocol (PDCP) layer. The DU is responsible for processing a physical layer protocol and a real-time service, and implements functions of a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY) layer. The AAU implements part of the physical layer processing functions, radio frequency processing and active antenna related functions. Since the information of the RRC layer is finally mapped to or converted from the information of the PHY layer, the higher layer signaling, such as the RRC layer signaling, can also be considered as being transmitted by the DU or by the DU + AAU under this architecture. It is to be understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in an access network (RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

It should also be understood that terminal equipment in the wireless communication system may also be referred to as 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 device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. The embodiments of the present application do not limit the application scenarios.

To facilitate understanding of the embodiments of the present application, a brief description will first be given below in conjunction with several terms referred to in the present application.

1. Demodulation reference signal

The demodulation reference signal is a reference signal for data demodulation. The demodulation reference signal may be a demodulation reference signal (DMRS) in an LTE protocol or an NR protocol, or may be another reference signal defined in a future protocol for implementing the same function. In LTE or NR protocols, DMRS may be carried in a physical shared channel and transmitted together with data block signals for channel estimation of a non-fading stationary channel, thereby completing demodulation of the data block signals carried in the physical shared channel. For example, the downlink data block is transmitted together with a Physical Downlink Shared Channel (PDSCH) or the uplink data block is transmitted together with a Physical Uplink Shared Channel (PUSCH). In an embodiment of the present application, the demodulation reference signal may include a demodulation reference signal transmitted through a physical uplink shared channel. The DMRS may be carried in a physical control channel and transmitted together with the control signal, so as to perform channel estimation on the fading channel, thereby completing demodulation of the control signal carried in the physical shared channel. For example, the downlink control signal is transmitted together with a Physical Downlink Control Channel (PDCCH) or the uplink control signal is transmitted together with a Physical Uplink Control Channel (PUCCH). In an embodiment of the present application, the demodulation reference signal may include a demodulation reference signal transmitted through a physical uplink control channel.

The demodulation reference signal may include a front-loaded demodulation reference signal and an additional demodulation reference signal.

For one transmission of one data block, a preamble demodulation reference signal is generally configured to occupy one symbol or multiple symbols in the time domain, and if multiple symbols are occupied, the multiple symbols are consecutive in the time domain.

Additional (additional) demodulation reference signal: for one transmission of one data block, whether the additional demodulation reference signal is configured or not is determined according to the length of one transmission of one data block. And if the additional demodulation reference signal is configured, the sending end adopts the demodulation reference signal generated by the same sequence after the front-loading demodulation reference signal as the additional demodulation reference signal. The additional demodulation reference signal may be one or more symbols after the symbols occupied by the front-loaded demodulation reference signal, and the last symbol of the symbols occupied by the front-loaded demodulation reference signal is discontinuous from the first symbol of the symbols occupied by the additional demodulation reference signal. The additional demodulation reference signal may configure the resource through higher layer signaling, e.g., RRC signaling. The additional demodulation reference signal is an optional demodulation reference signal.

It should be noted that one PUSCH repetition or one PUCCH repetition may include one or more sets of DMRSs. For the DMRS groups designed in this application, when a single-symbol DMRS is used, a group of DMRSs is a DMRS carried on one symbol; when dual-symbol DMRSs are used, one set of DMRSs is a DMRS carried on two consecutive symbols.

2. 3 scheduling modes of a Physical Uplink Shared Channel (PUSCH):

in the New Radio (NR), there are 3 PUSCH scheduling schemes (see protocol 38.214 6.1 for details).

In the first method, PUSCH is dynamically scheduled with an uplink grant in one Downlink Control Information (DCI).

In the PUSCH scheduling mode, the UE receives uplink scheduling once and performs PUSCH transmission once.

Configuration permission (Configured grant) Type1: semi-persistent configuration by a higher layer IE configurable grant containing the rrc-configurable uplinkggrant does not require reception of an uplink grant in the DCI.

In the method for scheduling the PUSCH, a high layer configures some semi-persistent resources, and if uplink data needs to be transmitted, the UE can use the resources to transmit the PUSCH and if no uplink data needs to be transmitted, the PUSCH is not transmitted.

Method three, configure license (Configured grant) Type2: and firstly receiving a higher-layer IE configuredGrantConfig which does not contain the rrc-configuredUplinkGrant, and then effectively activating the uplink permission semi-persistent scheduling in the DCI.

In the PUSCH scheduling mode, a high layer configures some semi-persistent resources, and then the resources are activated and deactivated by physical layer signaling, the activation behavior is similar to that of the second PUSCH transmission, and the resources cannot be used when the resources are not activated or deactivated.

3. Repetition type of PUSCH:

a PUSCH once may contain multiple repetitions (repetition), each of which transmits the same Transport Block (TB), and the redundancy versions of which may be the same or different. One repetition carries a transport block cyclic redundancy check (TB CRC), and the unit of rate matching is also one repetition. There are two repetition types for PUSCH, repetition type a and repetition type B. Currently, based on the repetition type a, it is under discussion to introduce a new repetition type, i.e. a transport block over multi-slot (TBoMS) PUSCH transmission.

1. Repetition type a (repetition type a and enhanced repetition type a of earlier protocol version):

(1) Repetition type a of earlier protocol versions:

in the repetition type a, if there are K transmissions, the K transmissions correspond to K consecutive slots, a repeat of a PUSCH is transmitted in each slot, and the starting symbol and the duration in each slot are the same. Illustratively, as shown in fig. 2 (a), each black box is a time slot, and each gray rectangle has a repeated duration in each time slot.

It should be understood that during the transmission of repetition type a, there is a nominal repetition and an actual repetition. For example, if there are K repetitions out of K repetitions to cancel transmission (1 ≦ K < K), then the nominal repetition is still K, while the actual repetition is K-K.

When in a time-division multiplexing (TDD) mode, in the transmission of the repetition type a, if any symbol in the resources of a PUSCH repetition is a downlink symbol, or a PUSCH time-frequency resource overlaps with a resource that is indicated to be cancelled by a Cancellation Indication (CI), or overlaps with a high-priority PUSCH/PUCCH, the PUSCH repetition is cancelled.

In some cases, there may be situations where it is not time to cancel. For example, when one PUSCH repeatedly starts to transmit, the CI is analyzed, and when resource overlap is found, only the later part of transmission can be cancelled.

(2) Enhanced repeat type a:

as can be seen from the above, in the repetition type a of the early protocol version, K repetitions of one PUSCH transmission are nominal repetitions, that is, one PUSCH transmission corresponds to K slots, regardless of whether each of the K slots can actually be used to send a PUSCH repetition.

In subsequent versions of the standard, enhanced repetition type a will be introduced. In the enhanced repetition type a, a concept of an available slot (available slot) is introduced. First, for a dynamically scheduled PUSCH transmission of repetition type a, K active slots are determined based on Radio Resource Control (RRC) configuration and scheduling DCI; for repeated type A PUSCH transmission of CG type1, determining K effective time slots based on RRC configuration; for repeated type a PUSCH transmission of CG type2, K active slots are determined based on RRC configuration and activation DCI.

It should be understood that similar to the earlier repeat type a, there is also a difference between the nominal and actual repeats for the added repeat type a.

As mentioned above, some reasons may lead to some duplicate cancellation of a PUSCH transmission. These reasons can be divided into two categories, the first category is determined according to RRC configuration, and the second category is determined according to dynamic indication, i.e. the physical layer indication results, for example, the determination of the CI valid slot only considers RRC signaling, and does not consider other physical layer indications besides this PUSCH scheduling DCI.

2. Repeat type B

In the transmission of the repetition type B, as shown in (B) of fig. 2, if there are K transmissions, each transmission corresponds to L consecutive symbols, and the symbols corresponding to the K transmissions are consecutive.

It should be understood that during the transmission of repetition type B, there is nominal repetition and actual repetition. For example, if there are K repetitions out of K repetitions to cancel transmission (1 ≦ K < K), then the nominal repetition is still K, while the actual repetition is K-K.

While in TDD mode, some symbols are considered invalid for PUSCH repetition type B transmission.

For PUSCH repetition type B, when the invalid symbols for each of the K nominal transmissions for PUSCH repetition type B transmission are determined, the remaining symbols are considered as potentially valid symbols. If the potential valid symbol in a nominal repetition is greater than 0, the nominal repetition comprises one or more actual repetitions, each actual repetition comprising a set of consecutive potential valid symbols within a slot (i.e., a repetition is classified as two actual repetitions when a slot boundary or invalid symbol is encountered). The actual repetition of a single symbol is not transmitted except for L = 1.

For example, in the repetition type a, when any one symbol in one actually repeated resource of the repetition type B is a downlink symbol, or a PUSCH time-frequency resource overlaps with a resource indicated by CI for cancellation, or overlaps with a high-priority PUSCH/PUCCH, the PUSCH repetition is cancelled. The specific operation and the repetition type a are not described herein.

4. Transport block over multi-slot (TBoMS):

compared with LTE and long term evolution advanced (LTE-a) wireless communication systems, the NR wireless communication system deploys a higher frequency band to obtain a larger communication bandwidth. However, the high frequency band results in larger path loss and penetration loss, making the coverage performance of NR far inferior to LTE and LTE-a.

In order to improve the coverage performance of NR, a cross-multi-slot transport block technique is proposed. Exemplarily, as shown in (c) of fig. 2, TB #1 to TB #4 are aggregated into one large TB. The technology aggregates small data packets on each time slot into a large data packet, transmits the aggregated data packet on a plurality of time slots together, reduces the expenditure of Cyclic Redundancy Code (CRC) by reducing the TB (transport block size, TBS) times, improves coding gain by increasing the TBS (transport block size), improves power spectral density by reducing frequency resources, and improves coverage performance.

5. Two mapping types of PUSCH (mappingtype)

There are two mapping types for PUSCH, mapping type a and mapping type B.

In the mapping type A, an initial symbol S of a PUSCH is a slot first symbol, and the number L of continuous symbols is counted from the symbol S; in mapping type B, the starting symbol S of PUSCH may be any one symbol of one slot, and the number L of consecutive symbols is counted from symbol S.

For the PUSCH repetition Type a, the PUSCH mapping Type may be Type a or Type B; for PUSCH repetition Type B, the PUSCH mapping Type may be Type B.

In the current NR protocol, notification of the mapping type, the dynamically scheduled PUSCH is indicated in DCI; the PUSCH configured with the permission Type1 is configured by high-level parameters; the PUSCH configuring the grant Type2 is supported in the activation DCI.

6. DMRS in PUSCH

The high-layer parameter maxLength indicates whether the DMRS of the PUSCH is a single symbol or a double symbol; the DMRS-additionposition (whose values may be pos0, pos1, pos2, and pos 3) indicates the position of the DMRS.

The location of the first DMRS in the single-symbol DMRS and the dual-symbol DMRS are given below by tables 2 and 3, respectively

Wherein l _d Is the number of persistent symbols of PUSCH, l ₀ Is the position of the first DMRS symbol of PUSCH.

PUSCH mapping type A，

And l ₀ The first symbol position of a front-loaded demodulation reference signal (front-loaded DMRS) can be configured as the 3 rd symbol or the 4 th symbol of a scheduled PUSCH (or PDSCH), i.e., l ₀ =2 or 3; PUSCH mapping type B>

And l ₀ Is the first symbol, i.e./, of the PUSCH transmission ₀ ＝0。

In the current NR protocol, maxLength and dmrs-additional position are both high-level communications in 3 PUSCH scheduling modes. And the number of PUSCH persistent symbols l _d The dynamically scheduled PUSCH is indicated in DCI; the PUSCH configured with the permission Type1 is configured by high-level parameters; the PUSCH configuring the grant Type2 is supported in the activation DCI.

TABLE 2

TABLE 3

Taking the positions of DMRSs in 4 in tables 2 and 3 as an example, referring to fig. 3, the positions of DMRSs in repetition are described when DMRSs are single-symbol or dual-symbol, and PUSCH is mapping type a or mapping type B, respectively. In fig. 3, the gray rectangles indicate repetitions, and the gray shaded rectangles indicate DMRSs in the repetitions.

Example one, DMRD of PUSCH is single symbol,/ _d =10,the mapping type of the pusch is mapping type a, DMRS-additive position = pos3, and the positions of the DMRSs in 2 repetitions are as shown in fig. 3 (a).

Example two, DMRD of PUSCH is two symbols,/ _d =10,the mapping type of the pusch is mapping type B, DMRS-additive position = pos3, and the positions of the DMRSs in 2 repetitions are as shown in fig. 3 (B).

Example three, DMRD of PUSCH is two symbols,/ _d =10,the mapping type of the pusch is mapping type a, DMRS-additive position = pos3, and the positions of the DMRSs in 2 repetitions are as shown in fig. 3 (c).

Example four DMRD of PUSCH is two symbols,/ _d =10,the mapping type of the pusch is mapping type B, DMRS-additive position = pos3, and the position of the DMRS in 2 repetitions is as shown in fig. 3 (d).

As can be seen from tables 2, 3, and 2, when the value of DMRS-additive position is pos0, there is a group of DMRSs in the repetition of one PUSCH; when the value of DMRS-additive position is pos1, pos2, or pos3, there may be multiple sets of DMRSs in one PUSCH repetition. In a high-speed scenario, the channel variation speed is fast, and in order to perform better channel estimation and frequency offset estimation, the DMRS density can be increased, that is, multiple sets of DMRSs are transmitted in one PUSCH repetition.

5. Two formats of PUCCH (format)

The PUCCH has five formats, specifically, as shown in table 4, corresponding to different symbol lengths (each PUCCH repeats the corresponding symbol length).

TABLE 4

6. DMRS in PUCCH

In five formats of PUCCH, the number of symbols for each repetition of format 1/3/4 may be from 4 to 14, the DM-RS position of PUCCH format 1 is specifically shown in table 5, the number of DMRS may also be different according to the number of symbols, and the number of DM-RS of PUCCH format 3/4 is specifically shown in table 6:

TABLE 5

TABLE 6

7. Phase change of uplink transmission:

fig. 4 shows modules related to the embodiment of the present application in uplink transmission. The uplink transmission of the UE mainly includes 2 chips, a baseband integrated circuit (BBIC) and a Radio Frequency Integrated Circuit (RFIC). The BBIC generates a normalized baseband signal, calculates the gain and sends the normalized baseband signal to the RFIC, and the RFIC realizes the gain sent by the gain calculation module through two-stage adjustment of a digital domain and an analog domain.

Analog domain gain adjustment or switching can cause uplink transmit phase jumps. The digital domain gain adjustment module does not cause uplink transmission phase jump. However, the digital domain gain adjustment module is not suitable for large amplitude adjustment, because too much digital domain power may cause digital to analog converter (DAC) saturation, and too little digital domain power may reduce DAC efficiency. It should be ensured that the digital domain power into the DAC is relatively stable around a value.

The adjustment of the uplink transmission power can cause the adjustment of the gain of the analog domain, and the switch of the uplink analog domain can cause the switch of the gain module of the analog domain. The adjustment of the uplink transmission power or the uplink switch causes the jump of the uplink transmission phase.

8. Joint channel estimation:

taking fig. 2 at (a) as an example, each black frame is a time unit (e.g., may be one PUSCH repetition, or one PUCCH repetition, or one or more slots, or one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols), and the gray rectangles are DMRSs. Currently, each time unit uses only its own DMRS for channel estimation. In recent standard discussions, uplink coverage needs to be enhanced, and one direction of uplink enhancement is to improve the quality of channel estimation. To improve the quality of the channel estimation, filtering in the time domain for a longer time may be considered, for example, channel estimation in combination with DMRS over multiple repetitions. It will be appreciated that if joint channel estimation of multiple time units is required, it is necessary to ensure that the transmit phase/average power does not change between these time units.

It should be noted that the time window referred to in this application is not limited to the joint channel estimation time window, but is merely a name of example, and any physical uplink channel transmission time keeping the phase continuity/power the same may be understood as the time window of this application.

In the current protocol, the concept of joint channel estimation time window is agreed to be introduced, and the transmission of the physical uplink channel in one time window needs to ensure that the phase is continuous/the average power is not changed.

If the phase is continuous or the transmission power is not changed, the transmission power of the physical uplink channel in the time window is ensured to be unchanged. If the channel is poor and the transmission power is unchanged, the transmission power is smaller, and the performance of receiving signals by the base station is poor; if the channel becomes good and the transmit power does not change, then the transmit power is greater, increasing interference to other transmissions. There may be a problem with the power not changing when the channel changes faster. Taking the example in fig. 2 at (a), K =4 in the figure, and the 4 slots are a time window, then the phases of the 4 slots are continuous, and the average transmission power of each slot is constant.

Moreover, when the channel (quality) changes rapidly, the base station may be configured with high-density DMRSs, and then within one repetition, there are multiple groups of DMRSs per se that keep the phase continuous or the transmission power unchanged, and the performance benefit of joint channel estimation between different repetitions may be small.

The communication method provided by the present application is described below with reference to fig. 5 to 14.

The method 100 for transmitting information according to the embodiment of the present application is described in detail below with reference to fig. 5. Fig. 5 is a schematic interaction diagram of the method 100 of the present application.

S101, the terminal equipment acquires the number of DMRS groups contained in a time unit.

Illustratively, the terminal device may determine the number of DMRS groups contained in a time element according to a physical uplink channel configuration received from the network device. Alternatively, the network device may directly transmit the number of DMRS groups included in the time element to the terminal device.

It should be understood that the time unit herein may be any one of the following: one physical uplink channel repetition, one or more slots, one or more OFDM symbols. When the physical uplink channel is a PUSCH and the time unit is a plurality of slots, the time unit may be configured to transmit one TB, and only one transport block cyclic redundancy check (TB CRC) code, such as a TBoMS, is carried on the time unit; when the time unit is one or more OFDM symbols, the OFDM symbols herein may be OFDM symbols, and may also be discrete fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) symbols.

And S102, the terminal equipment determines the number of time units contained in a time window according to the number of DMRS groups contained in the time units, and the phase in the time window is continuous or the average transmission power is unchanged.

It should be understood that the time window herein may include one or more time units, and when the time window includes one time unit, then its phase is continuous and its average transmission power is also constant in one time unit, then the phase continuity or the average transmission power does not need to be kept constant between each time unit involved in transmitting the physical uplink channel, i.e. the phase continuity or the average transmission power is constant in the time window; when the terminal device determines that the time window contains a plurality of time units, the phase continuity or the average transmission power needs to be kept unchanged among the plurality of time units in the time window, so that the phase continuity or the average transmission power in the time window can be kept unchanged.

Illustratively, the terminal device determines the number of time elements contained in the time window according to the mapping relation between the number of DMRS groups contained in the time elements and the number of time elements contained in the time window.

The mapping relationship here may be pre-configured at the terminal device, for example, may be specified by a protocol, or may be received by the terminal device from the network device.

It should be understood that the number of DMRS groups included in a time element here may be understood as the number of DMRS groups included in each time element in the physical uplink channel transmitted by the terminal device in S103.

It should also be understood that the terminal device may obtain a plurality of candidate values of the number of DMRS groups contained in a time element, where the plurality of candidate values includes the number of DMRS groups contained in each time element in the physical uplink channel transmitted by the terminal device in S103, and a one-to-one mapping relationship or a many-to-one mapping relationship exists between the plurality of candidate values of the number of DMRS groups contained in the time element and the plurality of candidate values of the number of time elements contained in the time window, and a one-to-one mapping relationship between the plurality of candidate values of the number of DMRS groups contained in each time element in the physical uplink channel transmitted by the terminal device in S103 and the plurality of candidate values of the number of time elements contained in the time element in S103 and the plurality of candidate values of the number of time elements contained in the time window is included in the above one-to-one mapping relationship.

S103, the terminal device transmits the physical uplink channel in the time window, and correspondingly, the network device receives the physical uplink channel in the time window.

In the embodiment of the application, the terminal device obtains the number of DMRS groups contained in a time cell, so that the number of time cells contained in a time window can be flexibly determined according to the number, that is, the number of time cells for maintaining phase continuity or transmission power is flexibly determined, and therefore, the performance of signal transmission can be improved under the condition of fast channel quality change, and the problem of uplink transmission performance deterioration or interference on other transmissions is reduced. In addition, the number of the time units contained in one time window is determined according to the number, so that the performance benefit of the joint channel estimation relative to the channel estimation of each time unit can be improved as much as possible.

It should be appreciated that, in general, joint channel estimation combining DMRS groups on multiple time elements may yield a greater performance benefit of joint signal estimation than channel estimation using only its own DMRS group for a single time element. However, a base station may be configured with high-density DMRSs, for example, a time unit includes 3 or 4 DMRS groups, then the quality of channel estimation performed by the time unit is already high, and the performance benefit of joint channel estimation performed by a plurality of such time units may not be large, but when the number of time units included in a time window is determined by the method according to the embodiment of the present application, the number of DMRS groups in the time unit is taken into consideration, and when the number of DMRS groups included in each time unit is large, that is, when the quality of channel estimation performed by the time unit itself is high, joint channel estimation is performed on fewer time units, and better channel estimation performance can also be obtained; meanwhile, a small number of time units need to keep the average transmission power unchanged, so that when the channel changes rapidly, the performance of the received signal is deteriorated or interference to other transmissions is increased less in order to keep the transmission power unchanged, and thus the improvement of the power control performance can be realized. In summary, the embodiments of the present application may obtain a reasonable compromise between channel estimation performance and power control performance for the technical problem to be solved.

Optionally, the method 100 further comprises:

step 1, terminal equipment acquires a first number, wherein the first number is the number of DMRS groups used for determining a physical uplink channel in a time window, and the phase in the time window is continuous or the average transmission power is unchanged.

It should be understood that the first number may be preset by the protocol, or the first number may also be received by the terminal device from the network device, that is, step 1 may also be: the terminal device receives the first number from the network device and, accordingly, the network device sends the first number to the terminal device. The physical uplink channel herein may be understood as a physical uplink channel to be transmitted to the network device by a subsequent terminal device.

It should also be understood that in general we refer to PUSCH comprising a data part of PUSCH and PUSCH DMRS, sometimes we reduce the data part of PUSCH to PUSCH, i.e. the transmission of PUSCH encompasses both PUSCH and PUSCH DMRS. It should also be understood that in general we refer to PUCCH as including the control signal portion of PUCCH and the PUCCH DMRS, sometimes we reduce the control signal portion of PUCCH to PUCCH, i.e. transmission of PUCCH encompasses transmission of PUCCH and DMRS of PUCCH.

And 2, the terminal equipment determines the number of the time units contained in the time window according to the first number and the number of the DMRS groups contained in the time units.

It should also be understood that the number of DMRS groups contained in the time unit herein may be obtained by the terminal device from physical uplink channel configuration information, and the physical uplink channel configuration information may be received by the terminal device from the network device.

Step 2 is described in detail below by taking three possible implementations as examples.

A first possible implementation:

when determining the number of time elements included in a time window, the terminal device needs to satisfy a condition that the number of DMRS groups included in the time window is greater than or equal to the first number.

Illustratively, the number of time units contained in a time window is

Wherein +>

Represents a pair->

Rounding up, wherein N is a first number, k is the number of DMRS groups contained in a time element, and k is a positive integer.

Specifically, refer to the description corresponding to step S204 in the method 200.

In the embodiment of the application, the terminal device obtains the number of DMRS groups used for determining the physical uplink channel in the time window, so that the number of time units included in one time window can be flexibly determined according to the number and the number of DMRSs included in the time units, that is, the number of time units for which the phase is continuous or the average transmission power is not changed can be flexibly determined, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problem that the uplink transmission performance deteriorates or the interference to other transmissions is increased can be reduced. In addition, the number of time elements included in one time window is determined according to the number and the number of DMRSs included in the time elements, so that the performance benefit of the joint channel estimation for each time element can be improved as much as possible.

A second possible implementation:

the terminal equipment determines the number of time units contained in a time window according to the first number, the number of DMRS groups contained in the time units and first information, wherein the first information indicates M, M is a positive integer, and the number of the time units contained in the time window is less than or equal to M.

It should be understood that M is used herein to indicate an upper limit on the number of time units that a time window contains.

Illustratively, the first information here may be received by the terminal device from the network device, so the method 100 may further include: the terminal device receives the first information from the network device, and accordingly, the network device sends the first information to the terminal device.

Illustratively, the number of time units contained within a time window is M in the case where M.k < N, or M.k ≧ N

Specifically, reference may be made to the description corresponding to step S305 in the method 300.

According to the embodiment of the application, the maximum value of the number of the time units contained in the time window is further limited by taking the first information into account when the number of the time units contained in the time window is determined, so that the number of the time units contained in one time window is determined more flexibly, the performance of signal transmission can be improved under the condition that the channel quality changes faster, and the problem that the performance of uplink transmission is poor or other transmissions are interfered is reduced.

A third possible implementation:

the terminal equipment determines the first quantity according to the mapping relation between the second information and the first quantity, and when the physical uplink channel is PUSCH, the second information comprises at least one of the following parameters: a PUSCH repetition type (repetition type), a PUSCH mapping type (mapping type), a number of symbols of a PUSCH in a time unit (length indicated in startsymbol and length, or length indicated in startsymbol and length multiplied by a slot number corresponding to one repetition in a tbos), a single/double symbol (maxLength) of a DMRS of a PUSCH, and a DMRS-additional position parameter (DMRS-additional position) of a PUSCH; when the physical uplink channel is the PUCCH, the second information includes at least one of the following parameters: the number of symbols of a PUCCH in a time unit (PUCCH length), the format of the PUCCH (PUCCH format), and a DMRS additional position parameter (additional DMRS) of the PUCCH;

illustratively, the second information here may be received by the terminal device from the network device, and therefore the method 100 may further include: the terminal device receives the second information from the network device, and accordingly, the network device sends the second information to the terminal device. Or the second information here may also be obtained by the terminal device according to information received from the network device, for example, when the physical uplink channel is the PUSCH, the terminal device obtains the second information from the DCI which the network device receives according to the PUSCH configuration and/or the scheduling PUSCH from the network device; and when the physical uplink channel is the PUCCH, the terminal equipment acquires the second information from the network equipment according to the PUCCH configuration received from the network equipment and/or the DCI of the PDSCH corresponding to the scheduling PUCCH.

It should be understood that the parameter included in the second information may be understood as a transmission parameter affecting DMRS in a physical uplink channel transmitted by a subsequent terminal device to the network device, for example, a parameter affecting the number of DMRS groups contained in one time unit, where the number of symbols in the physical uplink channel in one time unit may be understood as the number of time domain symbols in one or more slots of the physical uplink channel.

It should also be understood that a plurality of candidate values may exist for the second information acquired by the terminal device, a plurality of candidate values may also exist for the first number acquired by the terminal device, and the plurality of candidate values of the second information may be in one-to-one correspondence with the plurality of candidate values of the first number, or alternatively, a many-to-one mapping relationship may exist between the plurality of candidate values of the second information and the plurality of candidate values of the first number. The mapping relationship between the second information and the first quantity is included in a one-to-one mapping relationship or a many-to-one mapping relationship between a plurality of candidate values of the second information and a plurality of candidate values of the first quantity. The terminal device determines the first quantity according to the mapping relationship between the second information and the first quantity, which can be understood as that the terminal device determines the candidate value of the first quantity according to one candidate value of a plurality of candidate values of the second information corresponding to the physical uplink channel sent to the network device by the subsequent terminal device and the mapping relationship between the candidate value and the candidate value of the first quantity.

Specifically, reference may be made to the corresponding description of the second possible implementation manner and the third possible implementation manner in the method 400.

In the embodiment of the application, because the second information is information to be configured for realizing physical uplink channel transmission in the prior art, and the second information may include dynamically configured information, a mapping relationship between the second information and the first number is configured in the RRC signaling, and the first number is determined according to the second information and the mapping relationship obtained by the dynamic configuration, the dynamic issuing of the first number is avoided, the overhead of physical layer signaling is reduced, and the spectrum utilization efficiency is improved.

The method 200 for transmitting information according to the embodiment of the present application is described in detail below with reference to fig. 6. Fig. 6 is a schematic interaction diagram of a method 200 of the present application.

S201, the network equipment sends PUSCH configuration to the terminal equipment.

Illustratively, the terminal device may determine the number of DMRSs contained in one time element as k according to the PUSCH configuration received in S201, where k is a positive integer. According to the current protocol, one PUSCH repetition may contain 1/2/3/4 DMRSs, i.e., k =1/2/3/4, but this is not limited in the embodiment of the present application.

S202, the network equipment sends first indication information to the terminal equipment, the first indication information is used for indicating a joint channel estimation time window, N/group DMRS are indicated in the first indication information, and N is a positive integer.

The DMRS and the DMRS group are detailed in the introduction to the DMRS, and are not described herein. In the embodiment of the present application, a single symbol DMRS is taken as an example for description, and in a specific implementation, DMRSs in the embodiment of the present application may be replaced by DMRS groups.

It should be understood that the network device indicates the N DMRSs to the terminal device by transmitting the number N to the terminal device, and indicates the time window to the terminal device in the form of the N DMRSs. Or the network equipment indicates the N DMRSs to the terminal equipment by sending the number N to the terminal equipment, and indicates the number of the DMRSs contained in one time window to the terminal equipment in the form of the N DMRSs, wherein the number of the DMRSs cannot be smaller than N.

It should be noted that S201 and S202 do not have a strict time sequence, the step numbers in the method 200 do not limit the execution sequence, and S201 and S202 may be indicated by different signaling or the same signaling.

Optionally, S203, the network device sends DCI scheduling PUSCH to the terminal device.

It should be understood that, as described in the above-mentioned 3 scheduling manners of PUSCH, if manner one is adopted, step S203 is executed, and the network device schedules PUSCH through uplink grant in DCI; if the second mode is adopted, the step S203 is not executed; if the third method is adopted, the DCI in S203 is replaced by the active DCI, and the network device activates the uplink grant semi-persistent scheduling in the DCI.

And S204, the terminal equipment determines a joint channel estimation time window according to the information received in S201 and S202 (and S203).

A time window is here understood to be one or more time units that keep the phase continuous/power the same, wherein the time unit may be any of the following: one physical uplink shared channel, PUSCH, repetition, one or more slots, one or more orthogonal frequency division multiplexing, OFDM, symbols.

Specifically, the terminal device determines the number of time elements included in the joint channel estimation time window according to the number k of DMRSs included in one time element acquired in S201 and the number N of DMRSs indicated by the network device in S202.

As an example, the time units contained in the time window of joint channel estimation

Wherein it is present>

Represents a pair->

And rounding up.

In the following, referring to fig. 7 and fig. 8, respectively, for example, k =1/2/3/4, n =2, and k =1/2/3/4, n =3, how the terminal device determines the number of time units included in the time window is described.

In fig. 7, k =1/2/3/4, n =2, pusch is transmitted by 4 time units, where each black box represents one time unit and each gray rectangle represents DMRS.

As shown in fig. 7 (a), k =1,

one time window contains 2 time elements and one time window contains 2 DMRSs.

As shown in fig. 7 (b), k =2,

one time window contains 1 time element and one time window contains 2 DMRSs.

As shown in fig. 7 (c), k =3,

one time window contains 1 time element and one time window contains 3 DMRSs.

As shown in fig. 7 (d), k =4,

one time window contains 1 time element and one time window contains 4 DMRSs.

In fig. 8, k =1/2/3/4, n =3, pusch is transmitted by 4 time units, where each black box represents one time unit and each gray rectangle represents DMRS.

As shown in fig. 8 (a), k =1,

one time window contains 3 time elements and one time window contains 3 DMRSs.

As shown in fig. 8 (b), k =2,

one time window contains 2 time elements and one time window contains 4 DMRSs.

As shown in fig. 8 (c), k =3,

one time window contains 1 time element and one time window contains 3 DMRSs.

As shown in (d) in fig. 8, k =4,

one time window contains 1 time element and one time window contains 4 DMRSs.

As another example, the time units contained in the time window of joint channel estimation

Wherein it is present>

Represents a pair->

Rounded down, max () represents taking the larger value.

How the terminal device determines the number of time units included in the time window is described below with reference to fig. 9, respectively, by taking k =1/2/3/4 and n =2 as an example.

As shown in fig. 9, k =1/2/3/4, n =2, pusch is transmitted by 4 time units, where each black box represents one time unit and each gray rectangle represents DMRS.

As shown in fig. 9 (a), k =1,

one time window contains 2 time elements and one time window contains 2 DMRSs.

As shown in fig. 9 (b), k =2,

one time window contains 1 time element and one time window contains 2 DMRSs.

As shown in fig. 9 (c), k =3,

one time window contains 1 time element and one time window contains 3 DMRSs.

As shown in (d) of fig. 9, k =4,

one time window contains 1 time element and one time window contains 4 DMRSs.

And S205, the terminal equipment sends the PUSCH to the terminal equipment according to the determined joint channel estimation time window.

It should be noted that the number of DMRSs in one time element related to the embodiment of the present application is a nominal number of DMRSs. It should be understood that in a specific implementation, some circumstance may occur that affects the actual number of DMRSs in a time unit, so that the actual number is smaller than the nominal number, for example, DMRSs and configured control channel resources overlap in time-frequency resources, or DMRSs and common reference signals of an LTE system overlap in time, and then DMRSs in a time unit may be shifted backward or the number may be reduced.

It should be further noted that, when the time unit in the embodiment of the present application is one PUSCH repetition, the number of DMRSs in one repetition is the number of DMRSs included in the nominal repetition. Likewise, the determined joint channel estimation time window, i.e. the PUSCH transmission time keeping the phase continuity/power the same, is also in units of the duration of the nominal repetition, i.e. an integer number of nominal repetitions. This is simpler in implementation and does not take into account the actual transmission when the PUSCH transmission is otherwise affected.

It should be appreciated that, in general, joint channel estimation combining DMRS groups on multiple time elements may yield a greater performance benefit of joint signal estimation than channel estimation using only its own DMRS group for a single time element. However, a base station may be configured with high-density DMRSs, for example, a time unit includes 3 or 4 DMRS groups, then the quality of channel estimation performed by a time unit is already high, and the performance benefit of joint channel estimation performed by a plurality of such time units may not be large, but when the number of time units included in a time window is determined by the method according to the embodiment of the present application, the number of DMRS groups in a time unit is taken into account, and when the number of DMRS groups included in each time unit is large, and when the quality of channel estimation performed by the time unit itself is high, joint channel estimation is performed on fewer time units, and better channel estimation performance can also be obtained; meanwhile, fewer time units need to keep the average transmission power unchanged, so that when the channel changes faster, the performance of the received signal is deteriorated or the interference to other transmissions is increased due to the fact that the transmission power is kept unchanged, and thus the improvement of the power control performance can be realized. In summary, the embodiments of the present application may obtain a reasonable compromise between channel estimation performance and power control performance for the technical problem to be solved.

According to the embodiment of the application, the network equipment sends the number of the DMRS groups used for determining the PUSCH in the time window to the terminal equipment, and the terminal equipment determines the number of the time units contained in one time window according to the number and the number of the DMRSs contained in the time units, namely, flexibly determines the number of the time units which need to keep continuous phases or unchanged transmission power, and can improve the performance of signal transmission and reduce the problem of the deterioration of uplink transmission performance or the increase of interference on other transmissions under the condition that the channel quality changes rapidly. In addition, the number of time elements contained in one time window is determined according to the number and the number of DMRSs contained in the time elements, so that the performance benefit of joint channel estimation for each time element can be improved as much as possible.

The method 300 for transmitting information according to the embodiment of the present application will be described in detail below with reference to fig. 10. Fig. 10 is a schematic interaction diagram of a method 300 of the present application.

S301, the network device sends PUSCH configuration to the terminal device.

Illustratively, the terminal device may determine the number of DMRSs contained in one time unit as k according to the PUSCH configuration received in S201, where k is a positive integer. According to the current protocol, one PUSCH repetition may contain 1/2/3/4 DMRSs, i.e., k =1/2/3/4, but this is not limited in the embodiment of the present application.

S302, the network device sends second indication information to the terminal device, the second indication information is used for indicating the joint channel estimation time window, and the first indication information indicates M time units.

Wherein, the time unit can be any one of the following: one physical uplink shared channel, PUSCH, repetition, one or more slots, one or more orthogonal frequency division multiplexing, OFDM, symbols.

And S303, the network equipment sends third indication information to the terminal equipment, wherein the third indication information is used for indicating a joint channel estimation application threshold, and the third indication information indicates the N/group DMRSs.

Herein, the joint channel estimation application threshold may be understood as a threshold value for limiting the number of DMRSs included in one time unit, and the "joint channel estimation application threshold" is only an example of a name of the threshold, and the application does not limit this. It should be appreciated that the network device indicates the N DMRSs to the terminal device by transmitting the number N to the terminal device, and applies the threshold in the form of the N DMRSs as joint channel estimation. Or the network equipment indicates the N DMRSs to the terminal equipment by sending the number N to the terminal equipment, and indicates the number of the DMRSs contained in one time window to the terminal equipment in the form of the N DMRSs, wherein the number of the DMRSs cannot be smaller than N.

It should be noted that S301 to S303 do not have a strict time sequence, the step numbers in the method 300 do not limit the execution sequence, and S301 to S303 may be indicated by different signaling or may be indicated by the same signaling.

Optionally, S304, the network device transmits DCI scheduling PUSCH to the terminal device.

It should be understood that, as described in the above-mentioned 3 scheduling manners of PUSCH, if the manner one is adopted, step S304 is executed, and the network device schedules PUSCH through the uplink grant in DCI; if the second mode is adopted, the step S304 is not executed; if the third method is adopted, the DCI in S304 is replaced by the active DCI, and the network device activates the uplink grant semi-persistent scheduling in the DCI.

S305, the terminal equipment determines a joint channel estimation time window according to the information received in S301-304 (and S305).

The time window here may be understood as one or more time units that keep the phase continuous/power the same.

Specifically, the terminal device determines the number of time elements included in the joint channel estimation time window according to the number k of DMRSs included in one time element acquired in S301, the number M of time elements indicated in S302 by the network device, and the joint channel estimation application threshold N indicated in S303.

As an example, (1) if M · k < N, then determining that the joint channel estimation time window includes M time units; (2) If M.k ≧ N, determining that the joint channel estimation time window includes

A time unit.

In the following, referring to fig. 11 and fig. 12, respectively, for example, k =1/2/3/4, m =2, n =3, and k =1/2/3/4, m =2, n =1, how the terminal device determines the number of time units included in the time window is described.

In fig. 11, k =1/2/3/4, m =2, n =3, pusch is transmitted by 4 time units, where each black box represents one time unit and each gray rectangle represents DMRS.

As shown in fig. 11 (a), k =1, M =2, N =3, M · k < N, and one time window includes M time elements, that is, 2 time elements and 2 DMRSs.

As shown in fig. 11 (b), k =2, m =2, N =3, m · k > N, one time window contains 2 time units, and one time window contains 4 DMRSs.

As shown in fig. 11 (c), k =3, m =2, N =3, m · k > N, one time window contains 1 time element, and one time window contains 3 DMRSs.

As shown in fig. 11 (d), k =4, m =2, N =3, m · k > N, one time window contains 1 time element, and one time window contains 4 DMRSs.

In fig. 12, k =1/2/3/4, m =2, n =2, pusch is transmitted by 4 time units, where each black box represents one time unit and each gray rectangle represents DMRS.

As shown in fig. 12 (a), k =1,m =2,n =2,m · k = N, and one time window includes 2 time elements and one time window includes 2 DMRSs.

As shown in fig. 12 (b), k =2, m =2, N =2, m · k > N, one time window contains 1 time element, and one time window contains 2 DMRSs.

As shown in (c) of fig. 12, k =3, m =2, N =2, m · k > N, one time window contains 1 time unit, and one time window contains 3 DMRSs.

As shown in fig. 12 (d), k =4,m =2,n =2,m · k > N, one time window containing 1 time element and one time window containing 4 DMRSs.

As another example, (1) if M.k ≦ N, then it is determined that the joint channel estimation time window includes M time units; (2) If M.k > N, determining that the joint channel estimation time window includes

A time unit.

In the following, referring to fig. 13, how the terminal device determines the number of time units included in the time window is described by taking k =1/2/3/4, m =3, n =3 as an example.

As shown in fig. 13 (a), k =1, M =3, N =3, M · k = N, and one time window includes M time elements, that is, one time window includes 3 time elements, and one time window includes 3 DMRSs.

As shown in fig. 13 (b), k =2, m =3, N =3, m · k > N, one time window contains 2 time units, and one time window contains 4 DMRSs.

As shown in (c) of fig. 13, k =3, m =3, N =3, m · k > N, one time window contains 1 time unit, and one time window contains 3 DMRSs.

As shown in (d) in fig. 13, k =4, m =3, N =3, m · k > N, one time window containing 1 time element, and one time window containing 4 DMRSs.

And S306, the terminal equipment sends the PUSCH to the terminal equipment according to the determined joint channel estimation time window.

Optionally, in the method 300, the joint channel estimation application threshold may also be preset by a protocol, that is, step S303 may not be executed.

It should be understood that the following description,

according to the embodiment of the application, the network equipment indicates the number of the DMRS groups used for determining the PUSCH in the time window to the terminal equipment in the form of the number of the DMRS, indicates the maximum value of the number of the time units contained in the time window to the terminal equipment in the form of the number of the time units, and determines the number of the time units contained in one time window according to the number of the DMRS contained in the time units, the number of the DMRS indicated by the network equipment and the number of the time units, so that the terminal equipment can flexibly determine the number of the time units contained in the time window, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problem that the uplink transmission performance is deteriorated or other transmission interferences are increased is solved. In addition, the number of time elements included in one time window is determined according to the number and the number of DMRSs included in the time elements, so that the performance benefit of the joint channel estimation for each time element can be improved as much as possible.

The method 400 for transmitting information according to the embodiment of the present application is described in detail below with reference to fig. 14. Fig. 14 is a schematic interaction diagram of a method 400 of the present application.

It should be understood that the method 400 may be implemented in 4 different ways according to the content indicated by the fourth indication information in S402.

A first possible implementation:

s401, the network equipment sends PUSCH configuration to the terminal equipment.

Illustratively, the terminal device may determine, according to the PUSCH configuration received in S401, a transmission parameter affecting DMRS transmission used when the terminal device transmits PUSCH, where the transmission parameter affecting DMRS transmission may be one or more of: repetition type (repetition type), mapping type (mapping type), the number of persistent symbols of the PUSCH, single/double symbols of the DMRS of the PUSCH, and a parameter DMRS-additionposition.

S402, the network device sends fourth indication information to the terminal device, the fourth indication information is used for indicating a plurality of joint channel estimation time windows, and the fourth indication information indicates at least two numbers of time units. In the embodiment of the present application, the fourth indication information indicates the number of 2 time units (that is, M1 and M2) as an example for description, and in a specific implementation, the fourth indication information may also indicate other numbers greater than 2, which is not limited in this application.

It is to be understood that the at least two numbers of time units may be the same or different. The network device indicates M1 and M2 time units to the terminal device by sending the numbers M1 and M2 to the terminal device, and indicates the time window to the terminal device in the form of M1 and M2 time units. Or, the network device indicates M1 and M2 time units to the terminal device by sending the numbers M1 and M2 to the terminal device, and indicates the number of time units contained in one time window to the terminal device in the form of M1 and M2 time units.

In particular, the at least two numbers of time elements described above are associated with one or more of a plurality of transmission parameters affecting DMRS transmission: repetition type (repetition type), mapping type (mapping type), number of persistent symbols of PUSCH, single/double symbols of DMRS of PUSCH, parameter DMRS-additional position.

It is to be understood that the plurality of transmission parameters affecting DMRS transmission referred to in S402 includes transmission parameters affecting DMRS transmission used when the terminal device transmits PUSCH in S401 and S403. In other words, the plurality of transmission parameters affecting DMRS transmission in S402 generally refer to a plurality of possible types of the transmission parameters, and the transmission parameters affecting DMRS transmission used when the terminal device in S401 and S403 transmits PUSCH specifically refer to transmission parameters affecting DMRS transmission to be used when the terminal device transmits PUSCH in S405.

It should be noted that S401 and S402 do not have a strict time sequence, the step numbers in the method 400 do not limit the execution sequence, and S401 and S402 may be indicated by different signaling or the same signaling.

Optionally, S403, the network device sends DCI scheduling PUSCH to the terminal device.

It should be understood that, as described in the above-mentioned 3 scheduling manners of PUSCH, if the manner one is adopted, step S403 is executed, and the network device schedules PUSCH through the uplink grant in DCI; if the second mode is adopted, the step S403 is not executed; if the third method is adopted, the DCI in S403 is replaced by the active DCI, and the network device activates the uplink grant semi-persistent scheduling in the DCI.

Illustratively, the terminal device may determine, according to the PUSCH configuration transmitted by the network device and the DCI scheduling the PUSCH, transmission parameters affecting DMRS transmission used by the terminal device to transmit the PUSCH, where the transmission parameters affecting DMRS transmission may be one or more of: repetition type (repetition type), mapping type (mapping type), number of persistent symbols of PUSCH, single/double symbols of DMRS of PUSCH, parameter DMRS-additional position.

Or, for example, the terminal device may determine, according to the DCI for scheduling the PUSCH transmitted by the network device, a transmission parameter affecting DMRS transmission used when the terminal device transmits the PUSCH, where the transmission parameter affecting DMRS transmission may be one or more of the following: repetition type, mapping type, and the number of persistent symbols of the PUSCH _d Single/double symbols of DMRS of PUSCH, parameter DMRS-additionPosition.

S404, the terminal equipment determines a joint channel estimation time window according to the information received in S401, S402 (and S403).

Specifically, the terminal device determines a joint channel estimation time window according to a corresponding relationship between a transmission parameter used when the terminal device transmits the PUSCH and affecting DMRS transmission and one of at least two numbers of time units, that is, the time window includes several time units.

S405, the terminal device sends PUSCH to the terminal device according to the determined joint channel estimation time window.

In the following, how to associate at least two numbers of the above time units with one or more of the plurality of transmission parameters affecting DMRS transmission in S402 and how to determine the joint channel estimation time window according to the number of the time units by using the corresponding relationship between the transmission parameters affecting DMRS transmission and one of the at least two numbers of the time units for the terminal device to transmit PUSCH in S404 will be further described with reference to several possible examples.

Example 1, the association relationship in S402 is: when the Repetition type used by the terminal device for transmitting the PUSCH is Repetition type a, the terminal device determines in S404 that the time window includes M1 time units; when the repetition type used by the terminal device for transmitting the PUSCH is repetition type b, the terminal device determines in S404 that the time window includes M2 time units.

Example 2, the association relationship in S402 is: when the terminal equipment uses the single-symbol DMRS when transmitting the PUSCH, the terminal equipment determines that a time window comprises M1 time units in S404; when the terminal device uses the dual-symbol DMRS when transmitting the PUSCH, the terminal device determines in S404 that the time window includes M2 time elements.

Example 3, the association relationship in S402 is: when the Mapping type used by the terminal device for transmitting the PUSCH is Mapping type A, the terminal device determines that a time window comprises M1 time units in S404; when the mapping type used by the terminal device for transmitting the PUSCH is mapping type b, the terminal device determines in S404 that the time window includes M2 time units.

Example 4, the association relationship in S402 is: when the terminal device transmits the PUSCH with dmrs-additive position = pos0, the terminal device determines in S404 that the time window includes M1 time units; when the terminal device transmits the PUSCH with dmrs-additive position = pos1, the terminal device determines in S404 that the time window includes M2 time units; when the terminal device transmits the PUSCH using dmrs-AdditionalPosition = pos2/3, the terminal device determines in S404 that the time window includes M3 time units.

Example 5, the correlation in S402 is: PUSCH persistence symbol used when terminal device transmits PUSCHNumber of serial No. l _d When condition 1 is satisfied, the terminal device determines that the time window includes M1 time units in S404; number l of persistent symbols of PUSCH used when terminal equipment transmits PUSCH _d When condition 2 is satisfied, the terminal device determines that the time window includes M2 time units in S404; wherein the condition 1 may be l _d 7 or less, provided that l is _d ＞7。

Example 6, the correlation in S402 is: when the terminal equipment uses the single-symbol DMRS when transmitting the PUSCH, the terminal equipment determines that a time window comprises M1 time units in S404; when the terminal equipment uses a dual-symbol DMRS when transmitting PUSCH, and when mapping type A, the terminal equipment determines that a time window comprises M2 time units in S404; when the terminal device transmits the PUSCH using the dual-symbol DMRS and mapping type B, the terminal device determines in S404 that the time window includes M3 time units.

Example 7, the association relationship in S402 is: using Repetition type A, l when terminal equipment transmits PUSCH _d When condition 1 is satisfied, the terminal device determines that the time window includes M1 time units in S404; using Repetition type A, l when terminal equipment transmits PUSCH _d When condition 2 is satisfied, the terminal device determines that the time window includes M2 time units in S404; using Repetition type B, l when terminal equipment transmits PUSCH _d When condition 3 is satisfied, the terminal device determines that the time window includes M3 time units in S404; using Repetition type B, l when terminal equipment transmits PUSCH _d When the condition 4 is satisfied, the terminal device determines in S404 that the time window includes M4 time units.

Example 8, (1) the association relationship in S402 is: when the terminal equipment transmits the PUSCH, dmrs-additional position = pos0 or pos1 is used; or using a single symbol DMRS, mapping type a, DMRS-additional position = pos2 or pos3, l _d Less than or equal to 7; or using a single symbol DMRS, mapping type B, DMRS-additional position = pos2 or pos3, l _d When the time is less than or equal to 4, the terminal equipment determines that the time window comprises M1 time units in S404;

(2) The association relationship in S402 is: the terminal equipment uses dmrs-additional position = pos2 or pos3 and l when transmitting PUSCH _d When the number of the time windows is more than or equal to 8, the terminal equipment determines that the time windows comprise M2 time windows in S404An inter unit;

(3) The association relationship in S402 is: when terminal equipment transmits PUSCH, single-symbol DMRS is used, DMRS-additional position = pos2 or pos3, l _d And when the time window is larger than or equal to 5, the terminal equipment determines that the time window comprises M3 time units in S404.

It is to be understood that the association in example 8 may be represented in combination with tables 1 and 2, e.g. using dmrs-additional position = pos2 or pos3 and l when terminal device transmits PUSCH _d The values of ≧ 8 may correspond to row 10, column 4 to row 16, column 4, and row 10, column 5 to row 16, and column 5 in Table 1.

It should be noted that at least two numbers (e.g., M1, M2, M3) of time units in the embodiment of the present application may be equal to 1, in which case, the at least two numbers of time units indicate that joint channel estimation is not performed between different time units. Alternatively, the embodiments of the present application may also indicate at least two numbers of time units in some scenarios, and not indicate at least two numbers of time units in other scenarios, in which case, the at least two numbers of scenarios that do not indicate time units do not perform joint channel estimation between different repetitions.

It should be further noted that, when the time unit in the embodiment of the present application is one PUSCH repetition, the number of DMRSs in one repetition is the number of DMRSs included in the nominal repetition. Likewise, the determined joint channel estimation time window, i.e. the PUSCH transmission time keeping the phase continuity/power the same, is also in units of the duration of the nominal repetition, i.e. an integer number of nominal repetitions. Therefore, the method is simpler in specific implementation, and the actual transmission when the PUSCH transmission is influenced by other factors is not considered.

According to the embodiment of the application, the network equipment indicates at least 2 candidate values of the number of the time units to the terminal equipment, the number of the time units is associated with a plurality of candidate values affecting transmission parameters of the DMRS, and the terminal equipment determines the number of the time units contained in a time window according to the association relation and the transmission parameters affecting the DMRS used by the current PUSCH, so that the network equipment can more flexibly indicate the number of the time units keeping continuous phases or unchanged average transmission power, the performance of signal transmission can be improved under the condition that the channel quality changes rapidly, and the problem of uplink transmission performance deterioration or other transmission interference increase can be reduced.

A second possible implementation:

with respect to the first possible implementation, the difference is:

at least two numbers of the time elements in the first possible implementation manner are replaced with at least two numbers of the DMRS, and in S404, after the terminal device determines the number N of the DMRS according to the association relationship, the number of the time elements included in the time window is further determined according to the method 200.

According to the embodiment of the application, the network equipment sends a plurality of candidate values for determining the number of DMRS groups of the PUSCH in a time window to the terminal equipment, and the terminal can flexibly determine the number of time units contained in the time window according to the incidence relation between the candidate values and the candidate values influencing the transmission parameters of the DMRS and combining the transmission parameters influencing the DMRS used by the current PUSCH, namely flexibly determine the number of the time units with continuous phases or unchanged average transmission power. In addition, the number of time elements included in one time window is determined according to the number and the number of DMRSs included in the time elements, so that the performance benefit of the joint channel estimation for each time element can be improved as much as possible.

A third possible implementation:

with respect to the first possible implementation, the difference is:

replacing at least two numbers of time elements in the first possible implementation with at least two joint channel estimation application thresholds (see method 300 indicated in the form of N DMRSs), adding the steps of: the network device sends M time units to the terminal device, specifically, in steps S303 and S404, after the terminal device determines the joint channel estimation application threshold according to the association relationship, the number of time units included in the time window is further determined according to the method 300.

According to the embodiment of the application, the network equipment sends a plurality of candidate values for determining the maximum value of the number of DMRS groups of a PUSCH in a time window and the number of time units contained in the time window to the terminal equipment, and the terminal can flexibly determine the number of the time units contained in the time window according to the incidence relation between the candidate values and the candidate values influencing the transmission parameters of the DMRS and combining the transmission parameters influencing the DMRS used by the current PUSCH, namely flexibly determine the number of the time units with continuous or unchanged average transmission power of the phase, improve the performance of signal transmission under the condition of fast change of channel quality, and reduce the problem of the deterioration of uplink transmission performance or the increase of other transmission interferences. In addition, the number of time elements contained in one time window is determined according to the number and the number of DMRSs contained in the time elements, so that the performance benefit of joint channel estimation for each time element can be improved as much as possible.

A fourth possible implementation:

s401, the network device sends PUSCH configuration to the terminal device.

The terminal device may determine the number K of DMRSs included in one time unit according to the PUSCH configuration.

S402, the network equipment indicates a plurality of joint channel estimation time windows to the terminal equipment, and specifically, the network equipment sends at least two candidate values of the number of time units contained in the time windows to the terminal equipment; accordingly, the terminal device receives the at least two candidate values from the network device.

It is to be understood that the at least two candidate values for the number of time units may be the same or different.

Specifically, the at least two candidate values are associated with a plurality of candidate values of the number of DMRS groups contained in one time unit, and the association or mapping relationship may be one-to-one or one-to-many.

For example, the candidate value M1 is associated with the DMRS number K1, and the candidate value M2 is associated with the DMRS number K2.

It should be understood that the number of DMRS groups included in one time element in S402 includes the number K of DMRSs included in one time element determined by the terminal device in S401, and also includes the number K of DMRSs included in one time element in PUSCH transmitted by the terminal device in S405.

Optionally, S403, the network device transmits DCI scheduling PUSCH to the terminal device.

It should be understood that, as described in the above-mentioned 3 scheduling manners of the PUSCH, if the manner one is adopted, step S403 is executed, and the network device schedules the PUSCH through the uplink grant in the DCI; if the mode two is adopted, the step S403 is not executed; if the third method is adopted, the DCI in S403 is replaced by the active DCI, and the network device activates the uplink grant semi-persistent scheduling in the DCI.

And S404, the terminal equipment determines a joint channel estimation time window according to the information received in S401 and S402.

Specifically, the terminal device determines the number of time elements in one time window in the PUSCH transmitted by the terminal device in S405 according to a mapping relationship between a plurality of candidate values of the number of DMRS groups included in one time element and a plurality of candidate values of the number of time elements included in the time window, and the number of DMRS groups included in one time element configured by the terminal device.

In the embodiment of the present application, the terminal device obtains the number of DMRS groups included in a time cell, so that the number of time cells included in a time window can be flexibly determined according to the number, that is, the number of time cells for maintaining continuous phase or unchanged average transmission power can be flexibly determined, and when the channel quality changes faster, the performance of signal transmission can be improved, and the problem of uplink transmission performance degradation or interference on other transmissions can be reduced. In addition, the number of the time units contained in one time window is determined according to the number, so that the performance benefit of the joint channel estimation relative to the channel estimation of each time unit can be improved as much as possible.

The method provided by the embodiment of the present application is described in detail above with reference to fig. 5 to 14. Hereinafter, the apparatus provided in the embodiment of the present application will be described in detail with reference to fig. 15 to 16.

Fig. 15 is a schematic block diagram for a communication device provided in an embodiment of the present application. As shown in fig. 15, the communication device 10 may include a transceiver module 11 and a processing module 12.

The transceiver module 11 may be configured to receive information sent by other apparatuses, and may also be configured to send information to other apparatuses. Such as receiving a first number or transmitting a PUSCH. The processing module 12 may be used for content processing of the device, such as determining the number of time units included within a time window.

In one possible design, the communication device 10 may correspond to the terminal equipment in the above-described method embodiment.

Specifically, the communication apparatus 10 may correspond to a terminal device or a UE in any one of the methods 100 to 400 according to the embodiment of the present application, the communication apparatus 10 may include a module for performing an operation performed by the terminal device in the corresponding method, and each unit in the communication apparatus 10 is respectively for implementing the operation performed by the terminal device in the corresponding method.

Illustratively, when the communication device 10 corresponds to the terminal device in the method 100, the transceiver module 11 is configured to execute step S103, and the processing module 12 is configured to execute steps S101 and S102.

Illustratively, when the communication device 10 corresponds to the terminal device in the method 200, the transceiver module 11 is configured to execute steps S201-S203, S205, and the processing module 12 is configured to execute step S204.

Illustratively, when the communication device 10 corresponds to the terminal device in the method 300, the transceiver module 11 is configured to execute steps S301-S304, S306, and the processing module 12 is configured to execute step S305.

Illustratively, when the communication device 10 corresponds to the terminal device in the method 400, the transceiver module 11 is configured to execute steps S401-S403, S405, and the processing module 12 is configured to execute step S404.

In another possible design, the communication device 10 may correspond to the network device in the above-described method embodiment.

Specifically, the communication apparatus 10 may correspond to a network device in any one of the methods 100 to 400 according to the embodiment of the present application, the communication apparatus 10 may include a module for performing an operation performed by the network device in the corresponding method, and each unit in the communication apparatus 10 is respectively for implementing the operation performed by the network device in the corresponding method.

Illustratively, when the communication device 10 corresponds to a network device in the method 100, the transceiver module 11 is configured to execute step S103.

Illustratively, when the communication device 10 corresponds to the network device in the method 200, the transceiver module 11 is configured to execute steps S201-S203, S205, and the processing module 12 is configured to execute step S205.

Illustratively, when the communication device 10 corresponds to the network device in the method 300, the transceiver module 11 is configured to perform steps S301-S304, S306.

Illustratively, when the communication device 10 corresponds to the network device in the method 400, the transceiver module 11 is configured to execute steps S401-S403, S405.

In a possible design, the apparatus 20 may be a network device, and may also be a chip or a chip system located on the network device.

In one possible design, the apparatus 20 may be a terminal device including various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, and various forms of terminals, mobile stations, terminals, user equipment, soft terminals, etc., and may also be a chip or a system of chips located on the terminal device, etc.

The apparatus 20 may include a processor 21 (i.e., an example of a processing module) and a memory 22. The memory 22 is used for storing instructions and the processor 21 is used for executing the instructions stored by the memory 22 to make the apparatus 20 implement the steps performed by the devices in the various possible designs as described above in the corresponding methods in fig. 5 to 14.

Further, the apparatus 20 may further include an input port 23 (i.e., one example of a transceiver module) and an output port 24 (i.e., another example of a transceiver module). Further, the processor 21, memory 22, input 23 and output 24 may communicate with each other via internal connection paths to transfer control and/or data signals. The memory 22 is used for storing a computer program, and the processor 21 may be used for calling and running the computer program from the memory 22 to control the input port 23 to receive a signal and the output port 24 to send a signal, so as to complete the steps of the method described above for the terminal device, the radio access network device, the UE, or the base station. The memory 22 may be integrated in the processor 21 or may be provided separately from the processor 21.

Alternatively, if the message transmitting device 20 is a communication device, the input port 23 is a receiver and the output port 24 is a transmitter. Wherein the receiver and the transmitter may be the same or different physical entities. When the same physical entity, may be collectively referred to as a transceiver.

Alternatively, if the device 20 is a chip or a circuit, the input port 23 is an input interface, and the output port 24 is an output interface.

As an implementation manner, the functions of the input port 23 and the output port 34 may be realized by a transceiver circuit or a dedicated chip for transceiving. The processor 21 may be considered to be implemented by a dedicated processing chip, processing circuit, processor, or a general purpose chip.

As another implementation manner, a device provided in this embodiment of the present application may be considered to be implemented by using a general-purpose computer. Program codes that will implement the functions of the processor 21, the input port 23 and the output port 24 are stored in the memory 22, and a general-purpose processor implements the functions of the processor 21, the input port 23 and the output port 24 by executing the codes in the memory 22.

Each module or unit in the apparatus 20 may be configured to execute each action or processing procedure executed by a device (e.g., a terminal device) performing random access in the foregoing method, and a detailed description thereof is omitted here to avoid redundancy.

For the concepts, explanations, details and other steps related to the technical solutions provided in the embodiments of the present application related to the apparatus 20, please refer to the descriptions of the foregoing methods or other embodiments, which are not repeated herein.

It should be understood that in the embodiments of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

Embodiments of the present application also provide a computer-readable storage medium, on which computer instructions for implementing the method performed by the network device or the terminal device in the foregoing method embodiments are stored.

For example, the computer program, when executed by a computer, causes the computer to implement the method performed by the network device or the terminal device in the above-described method embodiments.

For example, when the computer program is executed by a computer, the computer may implement the method performed by the network device or the terminal device in the method embodiment described above.

It will also be appreciated that the memory in the embodiments of the subject application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer instructions or the computer program are loaded or executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more collections of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function 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 elements and algorithm steps 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 technical solution. 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 type of logical functional division, and other divisions may be realized in practice, for example, multiple 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 think 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 of communication, comprising:

the method comprises the steps that terminal equipment obtains the number of DMRS groups contained in a time unit, wherein the DMRS groups are DMRS groups of a physical uplink channel;

the terminal equipment determines the number of the time units contained in a time window according to the number of the DMRS groups contained in the time units, and the phase in the time window is continuous or the average transmission power is unchanged;

and the terminal equipment transmits the physical uplink channel in the time window.

2. The method of claim 1, wherein the time unit comprises one of: one physical uplink channel repetition, one or more time slots, one or more orthogonal frequency division multiplexing, OFDM, symbols.

3. The method according to claim 1 or 2, wherein the terminal device determines the number of time elements contained in a time window according to the number of DMRS groups contained in the time elements, and comprises:

4. The method of claim 3,

the mapping relationship between the number of DMRS groups contained in the time cell and the number of time cells contained in the time window is included in a one-to-one mapping relationship or a many-to-one mapping relationship between a plurality of candidate values for the number of DMRS groups contained in the time cell and a plurality of candidate values for the number of time cells contained in the time window.

5. The method according to claim 1 or 2, wherein the terminal device determines the number of time elements contained in a time window according to the number of DMRS groups contained in the time elements, and comprises:

and the terminal equipment determines the number of the time units contained in the time window according to a first number and the number of the DMRS groups contained in the time units, wherein the first number is the number of the DMRS groups used for determining the physical uplink channel in the time window.

6. The method of claim 5,

the first number is preset, or the first number is received by the terminal device from the network device.

7. The method of claim 5 or 6,

the number of DMRS groups contained in the time window is greater than or equal to the first number.

8. The method of claim 7,

the number of the time units contained in the time window is

Wherein it is present>

Represents a pair->

Rounding up, where N is the first number, k is the number of DMRS groups contained in the time element, and k is a positive integer.

9. The method of claim 5 or 6, wherein the terminal device determines the number of time elements included in the time window according to the first number and the number of DMRS groups included in the time elements, and comprises:

and the terminal equipment determines the number of the time units contained in the time window according to the first number, the number of the DMRS groups contained in the time units and first information, wherein the first information indicates M, M is a positive integer, and the number of the time units contained in the time window is less than or equal to M.

10. The method of claim 9,

in case M.k < N, the number of time units comprised within the time window is M, or,

in the case that M.k is more than or equal to N, the number of the time units contained in the time window is

/>

Wherein k is the number of DMRS groups contained in the time element, k is a positive integer, and N is the first number.

11. The method according to any one of claims 5 to 10, further comprising:

the terminal equipment determines the first quantity according to a mapping relation between second information and the first quantity, wherein the second information comprises at least one of the following parameters: the physical uplink channel repetition type, the physical uplink channel mapping type, the number of symbols of the physical uplink channel in a time unit, single/double symbols of the DMRS of the physical uplink channel, the DMRS additional position parameter of the physical uplink channel, and the format of the physical uplink channel.

12. The method of claim 11,

the mapping relationship between the second information and the first number is included in a one-to-one mapping relationship or a many-to-one mapping relationship between a plurality of candidate values of the second information and a plurality of candidate values of the first number.

13. A method of communication, comprising:

the method comprises the steps that network equipment informs terminal equipment of the number of DMRS groups contained in time elements so that the terminal equipment can determine the number of the time elements contained in a time window, the phase in the time window is continuous or the average transmission power is unchanged, and the DMRS groups are DMRS groups of a physical uplink channel;

and the network equipment receives the physical uplink channel from the terminal equipment.

14. The method of claim 13, wherein the time unit comprises one of: one physical uplink channel repetition, one or more time slots, one or more orthogonal frequency division multiplexing, OFDM, symbols.

15. The method according to claim 13 or 14, characterized in that the method further comprises:

and the network equipment sends the mapping relation between the number of the DMRS groups contained in the time cells and the number of the time cells contained in the time window to the terminal equipment.

16. The method of any one of claims 13 to 15,

the network equipment sends a first number to the terminal equipment, wherein the first number is the number of the DMRS groups used for determining the physical uplink shared channel physical uplink channel in the time window.

17. The method of claim 16,

18. The method according to any one of claims 13 to 15, further comprising:

and the network equipment sends first information to the terminal equipment, the first information indicates M, M is a positive integer, and the number of the time units contained in the time window is less than or equal to M.

19. The method according to any one of claims 13 to 18, further comprising:

the network equipment sends second information to the terminal equipment, wherein the second information comprises at least one of the following parameters: the physical uplink channel repetition type, the physical uplink channel mapping type, the number of symbols of the physical uplink channel in a time unit, single/double symbols of the DMRS of the physical uplink channel, the DMRS additional position parameter of the physical uplink channel, the format of the physical uplink channel, and the second information has a mapping relation with the first number.

20. The method of claims 13 to 19, further comprising:

and the network equipment sends the mapping relation between the second information and the first quantity to the terminal equipment.

21. The method of claim 19 or 20,

22. A communications apparatus, comprising:

means for implementing the method of any one of claims 1 to 12; alternatively, the first and second electrodes may be,

means for implementing the method of any one of claims 13 to 21.

23. A communications apparatus, comprising:

a processor and a memory;

the memory for storing a computer program;

the processor configured to execute the computer program stored in the memory to cause the communication apparatus to perform the communication method of any one of claims 1 to 12 or to perform the communication method of any one of claims 13 to 21.

24. A computer-readable storage medium, having stored thereon a computer program which, when run on a computer, causes the computer to perform the communication method according to any one of claims 1 to 12, or to perform the communication method according to any one of claims 13 to 21.

25. A chip system, comprising: a processor for calling and running a computer program from a memory so that a communication device in which the system-on-chip is installed performs the communication method according to any one of claims 1 to 12, or performs the communication method according to any one of claims 13 to 21.