CN107846731B

CN107846731B - Method and apparatus for transmitting or receiving physical uplink control channel

Info

Publication number: CN107846731B
Application number: CN201610834800.2A
Authority: CN
Inventors: 吕永霞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-09-20
Filing date: 2016-09-20
Publication date: 2020-06-26
Anticipated expiration: 2036-09-20
Also published as: CN107846731A

Abstract

The embodiment of the invention discloses a method and equipment for sending or receiving a Physical Uplink Control Channel (PUCCH), wherein the method comprises the following steps: the method comprises the steps that terminal equipment receives a Physical Downlink Control Channel (PDCCH) from network equipment, wherein the PDCCH is used for indicating the terminal equipment to send a Physical Uplink Control Channel (PUCCH) and time-frequency resources and subcarrier intervals used by the terminal equipment to send the PUCCH; and the terminal equipment sends the PUCCH to the network equipment on the time-frequency resource according to the subcarrier interval. According to the method for sending the PUCCH, the terminal equipment determines to send the PUCCH according to the PDCCH sent by the network equipment, and determines the time-frequency resource and the subcarrier interval used for sending the PUCCH according to the PDCCH, so that the problem of how to send the PUCCH in a communication system with multiple subcarrier intervals is solved.

Description

Method and apparatus for transmitting or receiving physical uplink control channel

Technical Field

The present invention relates to the field of communications, and in particular, to a method and a device for transmitting or receiving a Physical Uplink Control Channel (PUCCH).

Background

In the traditional digital signal transmission, information streams are transmitted through one channel at a time, and the method belongs to a serial transmission mode. The multi-carrier technology adopts a parallel transmission mode, serial high-speed information flow is subjected to serial-parallel conversion, the serial high-speed information flow is divided into a plurality of parallel low-speed information flows, and the plurality of parallel low-speed information flows are superposed and transmitted to form a transmission system of a plurality of carriers, namely the multi-carrier technology is a technology for transmitting high-speed data information by using a plurality of carriers. A carrier wave is a radio wave of a specific frequency carrying data.

Multi-carrier transmission techniques have been widely used in Communication systems, such as 4G (the 4th generation mobile Communication) Communication systems and IEEE (Institute of electrical and Electronics Engineers) 802.11 series systems. In the current communication system, the services supported by each system are relatively uniform, and each communication system only supports a waveform with a subcarrier interval. In a future 5G communication system, a serving cell of a network device may support multiple subcarrier spacings, so that the serving cell may use different subcarrier spacing signals to serve terminal devices with different requirements under different services and different deployment scenarios.

However, how to schedule the terminal device supporting different subcarrier intervals by the network device is an urgent problem to be solved.

Disclosure of Invention

In view of this, embodiments of the present invention provide a method and a device for sending or receiving a PUCCH, where a terminal device determines a subcarrier interval required for sending the PUCCH from at least two subcarrier intervals according to a Physical Downlink Control Channel (PDCCH) sent by a network device, and sends the PUCCH to the network device on a time-frequency resource indicated by the PDCCH, so as to solve a problem of how to schedule or configure a terminal device supporting different subcarrier intervals.

In one aspect, a method for transmitting a PUCCH is provided, and the method includes: the method comprises the steps that terminal equipment receives a Physical Downlink Control Channel (PDCCH) from network equipment, wherein the PDCCH is used for indicating the terminal equipment to send a Physical Uplink Control Channel (PUCCH) and time-frequency resources and subcarrier intervals used by the terminal equipment to send the PUCCH; and the terminal equipment sends the PUCCH to the network equipment on the time-frequency resource according to the subcarrier interval.

According to the method for sending the PUCCH, the terminal equipment determines the time-frequency resource and the subcarrier interval used for sending the PUCCH according to the PDCCH sent by the network equipment, so that the problem of how to send the PUCCH in a multi-subcarrier interval communication system is solved.

Optionally, the subcarrier spacing includes a first subcarrier spacing and a second subcarrier spacing, the first subcarrier spacing and the second subcarrier spacing are different, the PUCCH includes a first PUCCH and a second PUCCH, and the terminal device sends the PUCCH to the network device on the time-frequency resource according to the subcarrier spacing, including: the terminal equipment sends a first PUCCH to the network equipment on a time-frequency resource corresponding to the first subcarrier interval according to the first subcarrier interval; and the terminal equipment sends a second PUCCH to the network equipment on the time-frequency resource corresponding to the second subcarrier interval according to the second subcarrier interval.

The network equipment can select a proper PUCCH transmission mode for the terminal equipment according to an actual scene, and the terminal equipment transmits the PUCCH to the network equipment according to the PUCCH transmission mode determined by the network equipment, so that the utilization rate of time-frequency resources can be improved while the requirement of a service to be transmitted is met.

Optionally, the PUCCH includes feedback information of a PDSCH, wherein the PDCCH is further configured to instruct the terminal device to receive the PDSCH before transmitting the PUCCH.

Optionally, the PDCCH is further configured to instruct the terminal device to report at least one of channel state information, lobe state information, and lobe perfection information through the PUCCH.

According to the method for sending the PUCCH, the terminal equipment sends at least one of CSI, BSI and BRI carried in the PUCCH to the network equipment, so that the network equipment can be assisted to determine proper downlink transmission resources and/or a proper downlink transmission coding modulation scheme for the terminal equipment, and the reliability and the efficiency of downlink transmission are improved.

Optionally, the time domain resource of the PUCCH includes one time domain symbol, and the frequency domain resource of the PUCCH includes 48, 72, 96, 144, or 84 subcarriers.

Optionally, the PDCCH is used to indicate the subcarrier spacing, and includes: the PDCCH is used for indicating the sequence number of the subcarrier interval.

In another aspect, a method for receiving a PUCCH is provided, the method including: the method comprises the steps that network equipment sends a Physical Downlink Control Channel (PDCCH) to terminal equipment, wherein the PDCCH is used for indicating the terminal equipment to send a Physical Uplink Control Channel (PUCCH) and time-frequency resources and subcarrier intervals used by the terminal equipment to send the PUCCH; and the network equipment receives at least two PUCCHs sent by the terminal equipment on the time-frequency resources according to the subcarrier intervals, wherein the subcarrier intervals of the time-frequency resources bearing the at least two PUCCHs are different.

According to the method for receiving the PUCCH, the network equipment can simultaneously receive the PUCCH with at least two subcarriers with different intervals, so that the time delay requirement and the resource utilization requirement of a multi-subcarrier interval communication system on uplink service can be simultaneously met.

According to the method for receiving the PUCCH, the network equipment can determine proper downlink transmission resources and/or a proper downlink transmission coding modulation scheme for the terminal equipment by receiving at least one of CSI, BSI and BRI which are sent by the terminal equipment and are carried in the PUCCH, so that the reliability and the efficiency of downlink transmission are improved.

In another aspect, an embodiment of the present invention provides a terminal device, where the terminal device may implement a function executed by the terminal device in the method in the above aspect, where the function may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the terminal device includes a processor and a transceiver in its structure, and the processor is configured to support the terminal device to perform the corresponding functions in the above method. The transceiver is used to support communication between the terminal device and other network elements. The terminal device may also include a memory for coupling with the processor that retains program instructions and data necessary for the terminal device.

In another aspect, an embodiment of the present invention provides a network device, where the network device may implement a function executed by the network device in the method related in the above aspect, where the function may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible design, the network device includes a processor and a transceiver in its structure, and the processor is configured to support the network device to perform the corresponding functions of the method described above. The transceiver is used to support communication between the network device and other devices. The network device may also include a memory, coupled to the processor, that stores program instructions and data necessary for the network device.

In another aspect, an embodiment of the present invention provides a communication system, where the communication system includes the terminal device and the network device described in the foregoing aspects.

In still another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for the terminal device, which includes a program designed to execute the above aspects.

In yet another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for the network device, which includes a program designed to execute the above aspects.

Therefore, according to the method and the device for sending or receiving the PUCCH of the embodiment of the present invention, the network device instructs the terminal device to send the time-frequency resource and the subcarrier interval used by the PUCCH through the PDCCH, and receives the PUCCH with at least two different subcarrier intervals sent by the terminal device, so as to solve the problem of how to send the PUCCH in the multi-subcarrier interval communication system, and simultaneously meet the delay requirement and the resource utilization requirement of the multi-subcarrier interval communication system for the uplink service.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic block diagram of a communication system to which a PUCCH is transmitted or received to which an embodiment of the present invention is applied;

fig. 2 is a schematic flowchart of a method for transmitting a PUCCH according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a method for indicating time domain resources used by a PUCCH according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a method for indicating time domain resources used by a PUCCH according to another embodiment of the present invention;

fig. 5 is a schematic diagram of an indication method for transmitting time domain resources used by a PUCCH according to still another embodiment of the present invention;

fig. 6 is a schematic diagram of a method for indicating frequency domain resources used by PUCCH according to an embodiment of the present invention;

fig. 7 is a schematic flowchart of a method for receiving a PUCCH according to an embodiment of the present invention;

fig. 8A is a schematic structural diagram of a possible terminal device according to an embodiment of the present invention;

fig. 8B is a schematic structural diagram of another possible terminal device according to an embodiment of the present invention

Fig. 9A is a schematic structural diagram of a possible network device according to an embodiment of the present invention;

fig. 9B is a schematic structural diagram of another possible network device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

It should be understood that the solution of the present invention can be applied to various communication systems, such as: global System for Mobile communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, General Packet Radio Service (GPRS), LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD), Universal Mobile Telecommunications System (UMTS), and future 5G communication systems.

It should also be understood that, in the embodiments of the present invention, a terminal device may communicate with one or more core networks via a Radio Access Network (RAN), and the user device may be referred to as an access terminal, a User Equipment (UE), 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. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, and a terminal device in a future 5G network.

In this embodiment of the present invention, a network device may be used to communicate with a terminal device, where the network device may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB, NB) in WCDMA, an evolved Node B (eNB or e-NodeB) in LTE, or the network device may be a relay Station, an access point, a vehicle-mounted device, a wearable device, a Base Station device in a future 5G network, and the like.

Fig. 1 shows a schematic block diagram of a communication system 100 for transmitting PDCCH to which an embodiment of the present invention is applied. As shown in fig. 1, the communication system 100 can include a network device 102, and the network device 102 can include one or more antenna groups, each of which can include one or more antennas. For example, one antenna group can include

antennas

104 and 106, another group can include

antennas

108 and 110, and an additional group can include

antennas

112 and 114. While 2 antennas are shown in fig. 1 for each antenna group, it is to be understood that each antenna group can have more or fewer antennas. Network device 102 can additionally include a transmitter chain and a receiver chain, each of which can comprise a plurality of components associated with signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, antennas, etc.), as will be appreciated by one skilled in the art.

Network device 102 may communicate with a plurality of terminal devices, such as terminal device 116 and terminal device 122. Terminal device 116 is in communication with

antennas

112 and 114, where

antennas

112 and 114 transmit information to terminal device 116 over forward link 118 and receive information from terminal device 116 over reverse link 120. In addition, terminal device 122 is in communication with

antennas

104 and 106, where

antennas

104 and 106 transmit information to terminal device 122 over forward link 124 and receive information from terminal device 122 over reverse link 126.

For example, in a frequency division duplex system, forward link 118 can utilize a different frequency band than reverse link 120, and forward link 124 can utilize a different frequency band than reverse link 126; as another example, in a time division Duplex (tdd) system and a Full Duplex (Full Duplex) system, forward link 118 and reverse link 120 can utilize a common frequency band, and forward link 124 and reverse link 126 can also utilize a common frequency band.

At a given time, network device 102, terminal device 116, or terminal device 122 may be a wireless communication transmitting apparatus and/or a wireless communication receiving apparatus. When sending data, the wireless communication sending device may encode the data for transmission. Specifically, the wireless communication transmitting device may obtain (e.g., generate, receive from other communication devices, or save in memory, etc.) a number of data bits to be transmitted over the channel to the wireless communication receiving device. Such data bits may be contained in a transport block (or transport blocks) of data, which may be segmented to produce multiple code blocks.

Hereinafter, a method and an apparatus for transmitting or receiving a PUCCH according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 2 shows a schematic flow chart of a method 200 of transmitting a PUCCH according to an embodiment of the present invention, which includes, as shown in fig. 2:

s210, a terminal device receives a Physical Downlink Control Channel (PDCCH) from a network device, wherein the PDCCH is used for indicating the terminal device to send a Physical Uplink Control Channel (PUCCH) and the terminal device to send time-frequency resources and subcarrier intervals needed to be used by the PUCCH.

S220, the terminal equipment sends the PUCCH to the network equipment on the time-frequency resource according to the subcarrier interval.

In the embodiment of the invention, both the terminal equipment and the network equipment support communication according to at least two subcarrier intervals. The PDCCH sent by the network equipment to the terminal equipment is used for indicating the terminal equipment to send the PUCCH to the network equipment, and the PDCCH is also used for indicating time-frequency resources and subcarrier intervals required by the terminal equipment to send the PUCCH. After receiving the PDCCH sent by the network device, the terminal device determines a target subcarrier interval from at least two subcarrier intervals supported by the terminal device according to the PDCCH, where the target subcarrier interval may be one subcarrier interval or two or more subcarrier intervals. After the terminal equipment determines the time-frequency resource and the subcarrier interval required by sending the PUCCH, the terminal equipment can map the PUCCH on the corresponding time-frequency resource and send the PUCCH to the network equipment according to the target subcarrier interval.

The subcarrier interval required for sending the PUCCH described in the embodiments of the present invention is a frequency domain interval of peaks of two adjacent subcarriers in subcarriers occupied by the PUCCH, and when the PUCCH occupies only one subcarrier, the subcarrier interval is a frequency domain interval of a peak of a subcarrier occupied by the PUCCH and a peak of an adjacent subcarrier.

The transmission of a signal according to a subcarrier spacing (for example, PUCCH) described in the embodiments of the present invention refers to generating a multicarrier signal by using the subcarrier spacing modulation and then transmitting it into the air, and the monitoring of a signal based on a subcarrier spacing described in the embodiments of the present invention refers to receiving the signal and then demodulating the received signal using the subcarrier spacing.

The following respectively describes methods for indicating, by using a PDCCH, a terminal device to transmit a time-frequency resource used by a PUCCH (i.e., a time-domain resource and a frequency-domain resource occupied by the PUCCH).

The network device may indicate, for the terminal device, a position of a time domain resource block that can be used by the PUCCH first, and then indicate, for the terminal device, a position of a time domain symbol in the time domain resource block that can be used by the PUCCH, and when the position of the time domain symbol is indicated, may indicate an absolute sequence number of the time domain symbol, and may also indicate a relative position of the time domain symbol, for example, may indicate that a last time domain symbol of the time domain resource block is a time domain symbol that can be used by the PUCCH. In the embodiment of the present invention, the time domain symbol is a time domain symbol of a multi-carrier signal, and may be, for example, an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single-carrier Frequency-division multiple Access (SC-FDMA) symbol.

The time domain resource used by the terminal device to transmit the PUCCH may be defined to include a first time domain resource unit, the size of the first time domain resource unit (i.e., the time length of the first time domain resource unit) may be 1 millisecond (ms), and the first time domain resource unit may be, for example, a subframe, regardless of the subcarrier interval of a signal transmitted or received in the first time domain resource unit. The first time domain resource unit may be defined to include at least one second time domain resource unit, which may be, for example, a slot (slot) or mini slot (mini slot) or a time domain symbol. The size of the second time domain resource unit (i.e. the time length of the second time domain resource unit) is related to the subcarrier spacing adopted by the multicarrier modulation signal sent or received in the second time domain resource unit, where a signal with a larger subcarrier spacing is carried by the smaller second time domain resource unit, and a signal with a smaller subcarrier spacing is carried by the larger second time domain resource unit. For example, a time length of one first time domain resource unit is 1ms, and when a subcarrier interval is 15 kilohertz (kHz), the first time domain resource unit includes 2 second time domain resource units, each of which includes 7 time domain symbols; when the subcarrier spacing is 30kHz, the first time domain resource unit includes 4 second time domain resource units, and each second time domain resource unit includes 7 time domain symbols or 6 time domain symbols.

The network device may instruct the terminal device through the PDCCH, and from an end position of a first time domain resource unit occupied by the PDCCH, the network device may transmit the PUCCH in an nth second time domain resource unit in the mth first time domain resource unit, where m and n are positive integers, and a subcarrier interval for carrying a signal of the PDCCH (hereinafter, referred to as a "subcarrier interval of the PDCCH") may be greater than a subcarrier interval for carrying a signal of the PUCCH (hereinafter, referred to as a "subcarrier interval of the PUCCH"), may also be smaller than a subcarrier interval of the PUCCH, and may also be equal to a subcarrier interval of the PUCCH.

Fig. 3 to 5 respectively show methods for indicating time domain resources used for transmitting a PUCCH according to embodiments of the present invention.

As shown in fig. 3, the subcarrier spacing of the PDCCH is equal to the subcarrier spacing of the PUCCH, and the second time domain resource unit used by the PDCCH is equal to the second time domain resource unit used by the PUCCH, for example, the first time domain resource unit used by the PDCCH has the number s, and the network device may instruct the terminal device to transmit the PUCCH in the nth second time domain resource unit within the s + m first time domain resource units through the PDCCH. The network device may also instruct the terminal device to transmit the PUCCH in the kth second time domain resource unit through the PDCCH, for example, each first time domain resource unit includes 4 second time domain resource units, the number of the first time domain resource unit used by receiving the PDCCH is s, the number of the first time domain resource unit used by transmitting the PUCCH is s +4, and the first two second time domain resource units in the first time domain resource unit are used by transmitting the PUCCH, and then the network device may instruct the terminal device to transmit the PUCCH in the 13 th and 14 th second time domain resource units after s is the end of the first time domain resource unit. The dashed box in fig. 3 represents a first time domain resource unit, and the dashed arrow in fig. 3 represents a time domain resource used by the network device to schedule the terminal device to transmit PUCCH through PDCCH.

As shown in fig. 4, the subcarrier spacing of the PDCCH is smaller than that of the PUCCH, the second time domain resource unit used by the PDCCH is larger than that used by the PUCCH, for example, the first time domain resource unit used by the PDCCH has a number s, and the network device may instruct the terminal device to transmit the PUCCH in the nth second time domain resource unit within the (s + m) th first time domain resource unit through the PDCCH. The dashed box in fig. 4 represents a first time domain resource unit, and the dashed arrow in fig. 4 represents a time domain resource used by the network device to schedule the terminal device to transmit PUCCH through PDCCH.

As shown in fig. 5, the subcarrier spacing of the PDCCH is greater than the subcarrier spacing of the PUCCH, the second time domain resource unit used by the PDCCH is smaller than the second time domain resource unit used by the PUCCH, for example, the first time domain resource unit used by the PDCCH has the number s, and the network device may instruct the terminal device to transmit the PUCCH in the nth second time domain resource unit within the (s + m) th first time domain resource unit through the PDCCH. The dashed box in fig. 5 represents a first time domain resource unit, and the dashed arrow in fig. 5 represents a time domain resource used by the network device to schedule the terminal device to transmit PUCCH through PDCCH.

When the network device indicates, for the terminal device, a position of a frequency domain resource used by sending the PUCCH, the network device may indicate a sequence number of a first frequency domain resource unit used by the PUCCH, or may indicate a subcarrier sequence number of a starting position of the frequency domain resource used by the PUCCH or a sequence number of the first frequency domain resource unit, where a communication standard has defined a size of the frequency domain resource occupied by the PUCCH, or the terminal device has received a high-level signaling sent by the network device before sending the PUCCH, the high-level signaling indicates a size of the frequency domain resource occupied by the PUCCH sent by the terminal device, and the terminal device determines the starting position of the frequency domain resource used by the PUCCH, that is, the specific position of the frequency domain resource used by the PUCCH can. The one first frequency domain resource unit may be a frequency domain resource unit including a plurality of subcarriers, or may be one resource block.

As shown in fig. 6, for a carrier, if the carrier only supports modulating a transmission signal with one subcarrier interval (that is, PUCCH of different subcarrier intervals is transmitted on different carrier resources), the carrier may be divided into N frequency domain resources, where N is a positive integer, and one frequency domain resource may carry at least PUCCH of one user, for example, the carrier may be divided into 8 parts, which are respectively numbered #1 to #8, and the frequency domain resources divided by this division method correspond to the first subcarrier interval, and the number of the frequency domain resource used by the terminal device is indicated by PDCCH; if a carrier supports two or more subcarrier intervals (that is, PUCCHs with different subcarrier intervals can be sent on the same carrier resource), the carrier can be divided into 4 parts of frequency domain resources except the dividing method, one part of frequency domain resources can bear the PUCCH of at least one user and are respectively numbered from a to D, the frequency domain resources divided by the dividing method correspond to the second subcarrier interval, one part of frequency domain resources identified by the terminal device sending the PUCCH according to the first frequency domain subcarrier interval is any one of the frequency domain resources obtained by dividing the carrier into 8 parts, and one part of frequency domain resources identified by the terminal device sending the PUCCH according to the second frequency domain subcarrier interval is any one of the frequency domain resources obtained by dividing the carrier into 4 parts. According to the different number of the subcarrier intervals supported by one carrier, other dividing methods can be provided, so that the network equipment can schedule the terminal equipment supporting different subcarrier intervals to send the PUCCH.

The PDCCH may or may not indicate the subcarrier spacing.

When the PDCCH indicates the subcarrier spacing, a specific value of the subcarrier spacing may be indicated, and also a number of the subcarrier spacing may be indicated, where a communication standard numbers all possible subcarrier spacings in advance, or the terminal device further receives a high-level signaling from the network device before the terminal device receives the PDCCH, the high-level signaling configures at least two subcarrier spacings for the terminal device and numbers the at least two subcarrier spacings, and the PDCCH instructs the terminal device to transmit the PUCCH using one of the subcarrier spacings. The PDCCH may also indicate the subcarrier spacing through time-frequency resources, for example, the first subcarrier spacing corresponds to ten time-frequency resource blocks, which are respectively numbered 1-10, the second subcarrier spacing corresponds to ten time-frequency resource blocks, which are respectively numbered 11-20, and when the PDCCH indicates a time-frequency resource block, the terminal device may determine the used subcarrier spacing.

When the PDCCH does not indicate a subcarrier spacing, the terminal device may transmit the PUCCH using the same subcarrier spacing as the received PDCCH.

The terminal device may further receive high-level indication information sent by the network device, where the high-level indication information configures a subcarrier interval used for sending the PUCCH for the terminal device, and before a new high-level signaling reconfigures the subcarrier interval used for sending the PUCCH, the terminal device always sends the PUCCH to the network device according to the subcarrier interval configured by the high-level indication information.

Optionally, the subcarrier spacing comprises a first subcarrier spacing and a second subcarrier spacing, the first subcarrier spacing and the second subcarrier spacing being different,

the terminal device sends the PUCCH to the network device on the time-frequency resource according to the subcarrier interval, including:

the terminal equipment sends a first PUCCH to the network equipment on a time-frequency resource corresponding to the first subcarrier interval according to the first subcarrier interval; and

and the terminal equipment sends a second PUCCH to the network equipment on the time-frequency resource corresponding to the second subcarrier interval according to the second subcarrier interval.

The network device may instruct the terminal device to transmit the first PUCCH and the second PUCCH simultaneously, or may instruct the terminal device to transmit the first PUCCH and the second PUCCH simultaneously. When the terminal equipment only transmits one PUCCH in one time domain resource block or one time domain symbol according to the indication of the network equipment, the power of the terminal equipment can be completely allocated to one PUCCH, so that the coverage of an uplink can be increased.

On the premise that cell coverage is the same, that is, when time domain symbols of signals at different subcarrier intervals have the same cyclic prefix, a signal at a smaller subcarrier interval has a smaller cyclic prefix overhead and higher spectrum usage efficiency, but because a single time domain symbol has a longer duration, a time delay is higher, and a signal at a larger subcarrier interval has a time domain symbol with a shorter duration, a larger cyclic prefix overhead is caused, spectrum usage efficiency is lower, but a time delay is lower, and in addition, time domain resources corresponding to signals at different subcarrier intervals also have different sizes, so when a network device instructs a terminal device to transmit at least two PUCCHs in one time domain resource block or one time domain symbol, the network device may instruct the terminal device to transmit PUCCHs using signals at different subcarrier intervals according to different services, for example, it is assumed that a subcarrier interval of a time-frequency resource corresponding to a first PUCCH is smaller than a subcarrier interval of a time-frequency resource corresponding to a second PUCCH The first PUCCH may be used to transmit traffic with lower latency requirements and the second PUCCH may be used to transmit traffic with higher latency requirements. If the service to be sent has low requirement on time delay, the service can be sent by using a smaller subcarrier interval, so that the frequency spectrum utilization rate is improved. The network device may also select a suitable subcarrier interval according to the requirement of the service to be sent on the time domain resource.

Therefore, the network device can select a proper PUCCH transmission mode for the terminal device according to the actual scene, and improve the utilization rate of time-frequency resources while meeting the requirement of the service to be transmitted.

The network device may instruct the terminal device to receive a physical downlink data channel PDSCH through the PDCCH, and the terminal device may transmit feedback information of the PDSCH to the network device through the PUCCH, where the feedback information includes Acknowledgement (ACK) information or Negative Acknowledgement (NACK) information, where the ACK information is used by the terminal device to implement PDSCH reception and then indicate that the PDSCH has been correctly received to the network device, and the NACK information is used by the terminal device to implement PDSCH reception and then indicate that the PDSCH has not been correctly received to the network device. In this case, the PDCCH may indicate a subcarrier interval used by the PUCCH, or may not indicate a subcarrier interval used by the PUCCH, and when the PDCCH does not indicate a subcarrier interval used by the PUCCH, the terminal device transmits the PUCCH using the same subcarrier interval as the PDSCH, or may determine a subcarrier interval used by the PUCCH according to a correspondence relationship between a PDSCH subcarrier interval and a PUCCH subcarrier interval previously agreed by a communication standard.

The terminal equipment can also send feedback information of PDSCH scheduled by other PDCCH to the network equipment through the PUCCH.

Optionally, the PDCCH is further configured to instruct the terminal device to report at least one of Channel State Information (CSI), lobe State Information (BSI), and lobe Refinement Information (BRI) through the PUCCH.

The CSI is used for the network equipment to select a proper modulation and coding strategy for the terminal equipment and select proper frequency domain resources, the terminal equipment obtains the CSI through measurement and reports the CSI to the network equipment, the BSI is used for the network equipment to judge the receiving quality of each lobe signal at the terminal equipment, so that the network equipment is assisted to select a proper lobe for the terminal equipment, the terminal equipment obtains the BSI through measurement and reports the BSI to the network equipment, the BRI is used for the network equipment to judge the receiving quality of each fine lobe at the terminal equipment, the network equipment is assisted to select a proper fine lobe for the terminal equipment, and the terminal equipment obtains the BRI through measurement and reports the BRI to the network equipment.

In the embodiment of the present invention, a PUCCH sent by a terminal device may occupy one OFDM symbol, or may occupy multiple OFDM symbols, and a frequency domain resource occupied by the PUCCH may be 48, 72, 96, 144, or 84 subcarriers.

Optionally, the PDCCH is used to indicate the subcarrier spacing, and includes:

the PDCCH is used for indicating the sequence number of the subcarrier interval.

According to the method for sending the PUCCH, the terminal equipment determines to send the PUCCH according to the PDCCH sent by the network equipment, and determines the time-frequency resource and the subcarrier interval used for sending the PUCCH according to the PDCCH, so that the problem of how to send the PUCCH in a communication system with multiple subcarrier intervals is solved.

The method of transmitting the PUCCH according to the embodiment of the present invention is described in detail above from the viewpoint of a terminal device, and the method of receiving the PUCCH according to the embodiment of the present invention will be described in detail below from the viewpoint of a network device.

Fig. 7 is a schematic diagram illustrating a method for receiving a PUCCH according to an embodiment of the present invention, and as shown in fig. 7, the method 700 includes:

s710, a network device sends a Physical Downlink Control Channel (PDCCH) to a terminal device, wherein the PDCCH is used for indicating the terminal device to send a Physical Uplink Control Channel (PUCCH) and the terminal device to send time-frequency resources and subcarrier intervals used by the PUCCH.

S720, the network device receives the at least two PUCCHs sent by the terminal device on the time-frequency resources according to the subcarrier intervals, wherein the subcarrier intervals of the time-frequency resources carrying the at least two PUCCHs are different.

In this embodiment of the present invention, the network device may receive at least two PUCCHs with different subcarriers sent by one terminal device (that is, the subcarrier intervals of signals carrying the at least two PUCCHs are different), and may also receive at least two PUCCHs with different subcarrier intervals sent by at least two terminal devices (where each terminal device sends at least one PUCCH). The method for indicating the time-frequency resource and the subcarrier interval used by the terminal device to transmit the PUCCH by the PDCCH is the same as the process in the method 200, and is not described herein again.

The PUCCH sent by different terminal equipment can bear feedback signals corresponding to services with different delay requirements, in order to meet the delay requirements of the services with higher delay requirements, the terminal equipment needs to send the PUCCH by using signals with larger subcarrier intervals, in order to save time-frequency resources, the terminal equipment needs to send the PUCCH by using signals with smaller subcarrier intervals, and the two PUCCHs can increase delay if being sent by using a time division mode.

The network equipment can indicate the terminal equipment to receive a physical downlink data channel (PDSCH) through the PDCCH, the terminal equipment can send feedback information of the PDSCH to the network equipment through the PUCCH, and the feedback information comprises ACK information or NACK information, wherein the ACK information is used for indicating that the PDSCH is correctly received after the terminal equipment implements PDSCH receiving, and the NACK information is used for indicating that the PDSCH is incorrectly received after the terminal equipment implements PDSCH receiving. In this case, the PDCCH may not indicate the subcarrier interval used by the PUCCH, the terminal device may transmit the PUCCH using the same subcarrier interval as the PDSCH, or the terminal device may determine the subcarrier interval used for transmitting the PUCCH according to the correspondence between the PDSCH subcarrier interval and the PUCCH subcarrier interval agreed in advance by the communication standard.

Optionally, the PDCCH is further configured to instruct the terminal device to report at least one of channel state information CSI, lobe state information BSI, and lobe perfection information BRI through the PUCCH.

In this embodiment of the present invention, a time domain symbol may be an OFDM symbol or an SC-FDMA symbol, a PUCCH sent by a terminal device may occupy one OFDM symbol or may occupy multiple OFDM symbols, and a frequency domain resource occupied by the PUCCH may be 48, 72, 96, 144, or 84 subcarriers.

Optionally, the PDCCH is used to indicate the subcarrier spacing, and includes:

According to the method for receiving the PUCCH, the network equipment instructs the terminal equipment to send the PUCCH through the PDCCH and instructs the terminal equipment to send time-frequency resources and subcarrier intervals used by the PUCCH, the problem of how to send the PUCCH in a multi-subcarrier-interval communication system is solved, and the time delay requirement and the resource utilization requirement of the multi-subcarrier-interval communication system on uplink service can be met simultaneously by receiving the PUCCH with at least two different subcarrier intervals at the same time.

The foregoing embodiments have introduced the scheme of the embodiments of the present invention mainly from the perspective of interaction between a terminal device and a network device. It will be appreciated that each device, in order to carry out the above-described functions, comprises corresponding hardware structures and/or software modules for performing each function. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, with the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the 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 invention.

The terminal device and the network device may be divided according to the above method examples, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

In the case of an integrated unit, fig. 8A shows a possible structural diagram of the terminal device involved in the above-described embodiment. The terminal apparatus 800 includes: a processing unit 802 and a communication unit 803. The processing unit 802 is configured to control and manage actions of the terminal device 800, for example, the processing unit 802 is configured to enable the terminal device 800 to perform S210 of fig. 2 and/or other processes for the techniques described herein through the communication unit 803. The communication unit 803 is used to support communication between the terminal device 800 and other network entities, for example, the network devices described in the method 200. The terminal device 800 may further include a storage unit 801 for storing program codes and data of the terminal device 800.

For example, the processing unit 802 is configured to receive, through the communication unit 803, a PDCCH from a network device, where the PDCCH is used to instruct the terminal device to transmit a PUCCH and a time-frequency resource and a subcarrier interval used by the terminal device to transmit the PUCCH; and configured to transmit, by the communication unit 803, the PUCCH to the network device on the time-frequency resource according to the subcarrier spacing.

In the terminal device 800, the Processing Unit 802 may be a processor or a controller, such as a Central Processing Unit (CPU), a general-purpose processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 803 may be a transceiver, a transceiving circuit, or the like. The storage unit 801 may be a memory.

When the processing unit 802 is a processor, the communication unit 803 is a transceiver, and the storage unit 801 is a memory, the terminal device according to the embodiment of the present invention may be the terminal device shown in fig. 8B.

Referring to fig. 8B, the terminal device 810 includes: processor 812, transceiver 813, memory 811. Optionally, end device 810 may also include a bus 814. Wherein the transceiver 813, the processor 812 and the memory 811 may be connected to each other by a bus 814; the bus 814 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 814 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 8B, but this is not intended to represent only one bus or type of bus.

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

Therefore, the terminal device provided in the embodiment of the present invention determines to send the PUCCH according to the PDCCH sent by the network device, and determines the time-frequency resource and the subcarrier interval used for sending the PUCCH according to the PDCCH, thereby solving the problem of how to send the PUCCH in a multi-subcarrier interval communication system.

In the case of an integrated unit, fig. 9A shows a schematic diagram of a possible structure of the network device involved in the above-described embodiment. The network device 900 includes: a processing unit 902 and a communication unit 903. Processing unit 902 is configured to control and manage actions of network device 900, e.g., processing unit 902 is configured to enable network device 900 to perform S710 of fig. 7 and/or other processes for the techniques described herein via communication unit 903. The communication unit 903 is used to support communication between the network device 900 and other network entities, for example, a terminal device in the method 700. The network device 900 may also include a storage unit 901 for storing program codes and data of the network device 900.

For example, the processing unit 902 may be a processor or controller, such as a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 903 may be a transceiver, a transceiving circuit, or the like. The storage unit 901 may be a memory.

When the processing unit 902 is a processor, the communication unit 903 is a transceiver, and the storage unit 901 is a memory, the network device according to the embodiment of the present invention may be the network device shown in fig. 9B.

Referring to fig. 9B, the network device 910 includes: a processor 912, a transceiver 913, and a memory 911. Optionally, network device 910 may also include a bus 914. Wherein, the transceiver 913, the processor 912, and the memory 911 may be connected to each other through the bus 914; the bus 914 may be a PCI bus or an EISA bus, etc. The bus 914 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 9B, but this is not intended to represent only one bus or type of bus.

Therefore, the network device provided in the embodiment of the present invention instructs the terminal device to send the PUCCH through the PDCCH, and instructs the terminal device to send the time-frequency resource and the subcarrier interval used by the PUCCH, so as to solve the problem of how to send the PUCCH in the multi-subcarrier interval communication system.

In the embodiment of the present invention, the sequence number of each process does not mean the execution sequence, and the execution sequence of each process should be determined by the function and the internal logic of the process, and should not limit the implementation process of the embodiment of the present invention at all.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which 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 related objects are in an "or" relationship.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware or in software executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable disk, a compact disc Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a terminal device or a network device. Of course, the processor and the storage medium may reside as discrete components in a terminal device or a network device.

Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.

Claims

1. A method for transmitting a physical uplink control channel, the method comprising:

the method comprises the steps that terminal equipment receives a Physical Downlink Control Channel (PDCCH) from network equipment, wherein the PDCCH is used for indicating the terminal equipment to send a Physical Uplink Control Channel (PUCCH) and indicating a time domain resource position, a frequency domain resource unit number and a subcarrier interval used by the terminal equipment to send the PUCCH;

the terminal equipment determines the frequency domain resource position according to the frequency domain resource unit number and the subcarrier interval;

the terminal equipment sends the PUCCH to the network equipment on the time domain resource position and the frequency domain resource position according to the subcarrier interval;

the time domain resource position is determined by a time domain resource block position and a time domain symbol position in the time domain resource block, and the time domain resource block position and the time domain symbol position are indicated by the PDCCH.

2. The method of claim 1, wherein the subcarrier spacing comprises a first subcarrier spacing and a second subcarrier spacing, wherein the first subcarrier spacing and the second subcarrier spacing are different, wherein the PUCCH comprises a first PUCCH corresponding to the first subcarrier spacing and a second PUCCH corresponding to the second subcarrier spacing.

3. The method of claim 1 or 2, wherein the PUCCH comprises feedback information of a Physical Downlink Shared Channel (PDSCH), and wherein the PDCCH is further configured to instruct the terminal device to receive the PDSCH before transmitting the PUCCH.

4. The method of claim 1 or 2, wherein the PDCCH is further configured to instruct the terminal device to report at least one of channel state information, lobe state information, and lobe perfection information via the PUCCH.

5. The method according to claim 1 or 2, wherein the time domain resource of the PUCCH comprises one time domain symbol, and the frequency domain resource of the PUCCH comprises 48, 72, 96, 144, or 84 subcarriers.

6. The method of claim 1 or 2, wherein the PDCCH is used for indicating the subcarrier spacing, and comprises:

7. A method for receiving a physical uplink control channel, the method comprising:

the method comprises the steps that network equipment sends a Physical Downlink Control Channel (PDCCH) to terminal equipment, wherein the PDCCH is used for indicating the terminal equipment to send a Physical Uplink Control Channel (PUCCH) and indicating a time domain resource position, a frequency domain resource unit number and a subcarrier interval used by the terminal equipment to send the PUCCH, and time-frequency resources of the frequency domain resource unit number and the subcarrier interval are used for determining the frequency domain resource position;

the network equipment receives at least two PUCCHs sent by the terminal equipment at the time domain resource position and the frequency domain resource position according to the subcarrier intervals, wherein the subcarrier intervals of the time-frequency resources bearing the at least two PUCCHs are different;

8. The method of claim 7, wherein the PUCCH comprises feedback information for a Physical Downlink Shared Channel (PDSCH), and wherein the PDCCH is further configured to instruct the terminal device to receive the PDSCH before transmitting the PUCCH.

9. The method of claim 7 or 8, wherein the PDCCH is further configured to instruct the terminal device to report at least one of channel state information, lobe state information, and lobe perfection information through the PUCCH.

10. The method according to claim 7 or 8, wherein the time domain resource of the PUCCH comprises one time domain symbol and the frequency domain resource of the PUCCH comprises 48, 72, 96, 144 or 84 subcarriers.

11. The method of claim 7 or 8, wherein the PDCCH is used for indicating the subcarrier spacing, and comprises:

12. A terminal device for transmitting a physical uplink control channel, comprising: a processing unit and a communication unit, wherein,

the processing unit is configured to receive a physical downlink control channel PDCCH from a network device through the communication unit, where the PDCCH is used to instruct the terminal device to send a physical uplink control channel PUCCH and instruct the terminal device to send a time domain resource position, a frequency domain resource unit number, and a subcarrier interval used by the PUCCH; and the communication unit is used for determining a frequency domain resource position according to the frequency domain resource unit number and the subcarrier interval, and transmitting the PUCCH to the network equipment on the time domain resource position and the frequency domain resource position according to the subcarrier interval;

13. The terminal device of claim 12, wherein the subcarrier spacing comprises a first subcarrier spacing and a second subcarrier spacing, wherein the first subcarrier spacing and the second subcarrier spacing are different, wherein the PUCCH comprises a first PUCCH and a second PUCCH, and wherein the first PUCCH corresponds to the first subcarrier spacing and the second PUCCH corresponds to the second subcarrier spacing.

14. The terminal device according to claim 12 or 13, wherein the PUCCH comprises feedback information of a physical downlink shared channel PDSCH, and wherein the PDCCH is further configured to instruct the terminal device to receive the PDSCH before transmitting the PUCCH.

15. The terminal device of claim 12 or 13, wherein the PDCCH is further configured to instruct the terminal device to report at least one of channel state information, lobe state information, and lobe perfection information via the PUCCH.

16. A terminal device according to claim 12 or 13, wherein the time domain resource of the PUCCH comprises one time domain symbol and the frequency domain resource of the PUCCH comprises 48, 72, 96, 144 or 84 subcarriers.

17. The terminal device according to claim 12 or 13, wherein the PDCCH is configured to indicate the subcarrier spacing, and comprises:

18. A network device for receiving a physical uplink control channel, comprising: a processing unit and a communication unit, wherein,

the processing unit is configured to send a physical downlink control channel PDCCH to a terminal device through the communication unit, where the PDCCH is configured to instruct the terminal device to send a physical uplink control channel PUCCH and instruct the terminal device to send a time domain resource location, a frequency domain resource unit number, and a subcarrier interval used by the PUCCH, where the frequency domain resource unit number and the subcarrier interval time-frequency resource are used to determine the frequency domain resource location; the communication unit is used for receiving at least two PUCCHs sent by the terminal equipment at the time domain resource position and the frequency domain resource position according to the subcarrier intervals, wherein the subcarrier intervals of the time-frequency resources carrying the at least two PUCCHs are different;

19. The network device of claim 18, wherein the PUCCH comprises feedback information for a Physical Downlink Shared Channel (PDSCH), and wherein the PDCCH is further configured to instruct the terminal device to receive the PDSCH before transmitting the PUCCH.

20. The network device of claim 18 or 19, wherein the PDCCH is further configured to instruct the terminal device to report at least one of channel state information, lobe state information, and lobe perfection information via the PUCCH.

21. A network device according to claim 18 or 19, wherein the time domain resource of the PUCCH comprises one time domain symbol and the frequency domain resource of the PUCCH comprises 48, 72, 96, 144 or 84 subcarriers.

22. The network device of claim 18 or 19, wherein the PDCCH is configured to indicate the subcarrier spacing and comprises:

23. An apparatus comprising a processor and a memory, the processor being coupled to the memory, the memory being for storing a computer program, the processor being for executing the computer program stored in the memory to cause the apparatus to perform the method of any of claims 1 to 6.

24. An apparatus comprising a processor coupled to a memory for storing a computer program, the processor being configured to execute the computer program stored in the memory to cause the apparatus to perform the method of any of claims 7 to 11.

25. A computer-readable storage medium, characterized in that it stores a computer program which, when executed, implements the method according to any one of claims 1 to 6.

26. A computer-readable storage medium, characterized in that it stores a computer program which, when executed, implements the method according to any one of claims 7 to 11.