CN109586875B

CN109586875B - Method and device for sending and receiving uplink control channel

Info

Publication number: CN109586875B
Application number: CN201710912476.6A
Authority: CN
Inventors: 曲秉玉; 孙昊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-09-29
Filing date: 2017-09-29
Publication date: 2021-03-23
Anticipated expiration: 2037-09-29
Also published as: CN109586875A

Abstract

A method and a device for sending and receiving an uplink control channel are used for reducing the conflict of PUCCH resources. When the response information of the first uplink control channel resource transmission is 2 bits, the cyclic shift of 4 candidate sequences included in the first uplink control channel resource is x₁，x₁+3，x₁+6，x₁+9, when the first acknowledgement information transmitted by the first uplink control channel resource is 1 bit, the cyclic shift of the first uplink control channel resource is x₁、x₁+6, or x₁+3、x₁+ 9; when the response information transmitted by the second uplink control channel resource is 2 bits, the cyclic shift of the second uplink control channel resource is x₂，x₂+3，x₂+6，x₂+9, when the response information of the second uplink control channel resource transmission is 1 bit, the cyclic shift of the second uplink control channel resource is x₂、x₂+6, or x₂+3、x₂+ 9; the network equipment sends a first downlink control channel; the network device receives the first acknowledgement information through the first uplink control channel resource.

Description

Method and device for sending and receiving uplink control channel

Technical Field

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

Background

In a Long Term Evolution (LTE) system, transmission on a Physical Uplink Control Channel (PUCCH) is supported, and the PUCCH can be used to transmit 1-2 bits of information. Specifically, the base station configures PUCCH resources for the terminal device in advance. A base station schedules a terminal device to receive downlink data on a Physical Downlink Shared Channel (PDSCH) through a Physical Downlink Control Channel (PDCCH), and after receiving the PDCCH, the base station determines a PUCCH resource corresponding to the PDSCH according to an index of a first Control Channel Element (CCE) occupied by the PDCCH and a resource pool of the PUCCH, so as to transmit response information on the determined PUCCH.

In the New Radio (NR) system of the fifth generation mobile communication technology (5G), how to allocate PUCCH resources to terminal devices to reduce collisions is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a method and a device for sending and receiving uplink control channel resources, which are used for reducing the conflict of PUCCH resources.

The application provides a method and a device for allocating uplink control channel resources, which are used for reducing the conflict of PUCCH resources.

In a first aspect, a method of allocating uplink control channel resources is provided and may be performed by a network device, such as a base station. The method comprises the following steps: the uplink control channel resource comprises a first uplink control channel resource and a second uplink control channel resource, the first uplink control channel resource and the second uplink control channel resource are located in the same resource block, the first uplink control channel resource is used for transmitting first response information corresponding to a first downlink control channel, the second uplink control channel resource is used for transmitting second response information corresponding to a second downlink control channel, and a set to which cyclic shift of a candidate sequence included in the first uplink control channel resource belongs is { x₁，x₁+3，x₁+6，x₁+9, the set to which the cyclic shift of the candidate sequence included in the second uplink control channel resource belongs is { x }₂，x₂+3，x₂+6，x₂+9}，x₁And x₂Is not equal to x₁And x₂Are all elements in {0,1,2 }; when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the first uplink control channel resource is x₁，x₁+3，x₁+6，x₁+9, when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are x respectively₁、x₁+6, or is x₁+3、x₁+ 9; when the second uplink control signalWhen the second response information corresponding to the second downlink control channel transmitted by the channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the second uplink control channel resource is x₂，x₂+3，x₂+6，x₂+9, when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are x respectively₂、x₂+6, or is x₂+3、x₂+ 9; the network equipment sends the first downlink control channel; and the network equipment receives the first response information sent by the terminal equipment through the first uplink control channel resource.

Accordingly, in a second aspect, a method of allocating uplink control channel resources is provided, which may be performed by a terminal device. The method comprises the following steps: the uplink control channel resource comprises a first uplink control channel resource and a second uplink control channel resource, the first uplink control channel resource and the second uplink control channel resource are located in the same resource block, the first uplink control channel resource is used for transmitting first response information corresponding to a first downlink control channel, the second uplink control channel resource is used for transmitting second response information corresponding to a second downlink control channel, and a set to which cyclic shift of a candidate sequence included in the first uplink control channel resource belongs is { x₁，x₁+3，x₁+6，x₁+9, the set to which the cyclic shift of the candidate sequence included in the second uplink control channel resource belongs is { x }₂，x₂+3，x₂+6，x₂+9}，x₁And x₂Is not equal to x₁And x₂Are all elements in {0,1,2 }; when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the first uplink control channel resource is x₁，x₁+3，x₁+6，x₁+9, said second when said first uplink control channel resource is transmittedWhen the first response information corresponding to a downlink control channel is 1 bit, the cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are x respectively₁、x₁+6, or is x₁+3、x₁+ 9; when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the second uplink control channel resource is x₂，x₂+3，x₂+6，x₂+9, when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are x respectively₂、x₂+6, or is x₂+3、x₂+ 9; the terminal equipment receives the first downlink control channel from network equipment; and the terminal equipment sends the first response information to the network equipment through the first uplink control channel resource.

In this embodiment of the present application, when the response information is 2 bits, the first uplink control channel resource allocated by the network device to the terminal device includes 4 candidate sequences in one resource block, when the response information is 1 bit, the first uplink control channel resource allocated by the network device to the terminal device is a subset of the set of the 4 candidate sequences, the resource block further includes a second uplink control channel, when the response information carried by the second uplink control channel is 2 bits, the second uplink control channel resource includes another 4 candidate sequences, when the response information carried by the second uplink control channel is 1 bit, the second uplink control channel resource is a subset of the another 4 candidate sequences, so that different terminal devices do not need to carry 1-bit response information or 2-bit response information because the allocated uplink control channel carries 1-bit response information or 2-bit response information, and the same candidate sequences are allocated, so that the collision probability of the uplink control channel resources is reduced.

In one possible design, the candidate sequence is generated according to the following formula:

wherein R is the length of the candidate sequence, R is a positive integer, { xi | i ═ 0,1, 2., R-1} is a root sequence, m is a sequence of m_sIs the candidate sequence y_s,iCyclic shift of (d), m_sIs an integer, s is an index representing a different sequence, and j is a unit of an imaginary number.

A generation manner of the candidate sequence is given, which is only an example, and the embodiment of the present application does not limit the generation manner of the candidate sequence.

In one possible design, when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, and the second acknowledgement information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit: the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is an even number, and the cyclic shift of the 2 candidate sequences included in the second uplink control channel resource is an even number, or the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is an odd number, and the cyclic shift of the 2 candidate sequences included in the second uplink control channel resource is an odd number.

The interval between different even numbers is at least 2, avoiding the case that the interval between 2 candidate sequences is 1, and the same is true for different odd numbers. In this way, the distance of the candidate sequence corresponding to the uplink control channel resource in one RB in the time domain can be increased, so that the interference is reduced, and the method is helpful for resisting multipath fading.

In a possible design, when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, and the second acknowledgement information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, the network device sends a first notification message to the terminal device, where the first notification message is used to indicate that cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are even numbers, and cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are even numbers, or to indicate that cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are odd numbers, and cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are odd numbers. Correspondingly, when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, and the second acknowledgement information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, the terminal device receives a first notification message sent by the network device, where the first notification message is used to indicate that cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are even numbers, and cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are even numbers, or is used to indicate that cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are odd numbers, and cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are odd numbers.

The network device may notify the terminal device whether the candidate cyclic sequences included in the first uplink control channel resource and the second uplink control channel resource are even or odd, and the terminal device may determine cyclic shifts of the candidate sequences included in the first uplink control channel resource and the second uplink control channel resource according to the first notification message, so as to send the response information on the first uplink control channel resource or the second uplink control channel resource.

In one possible design, the resource block further includes a third uplink control channel resource, where the third uplink control channel resource is used to transmit third response information corresponding to a third downlink control channel, and a set to which cyclic shifts of candidate sequences included in the third uplink control channel resource belong is { x }₃，x₃+3，x₃+6，x₃+9}，x₁、x₂、x₃Are all not equal, and x₃Is an element in {0,1,2 }.

One resource block may include 12 candidate sequences, and each of the first uplink control channel resource and the second uplink control channel resource includes 8 candidate sequences, so that the remaining 4 candidate sequences in one resource block may belong to the third uplink control channel resource, thereby fully utilizing the resource block.

In one possible design, the network device sends a second notification message to the terminal device, where the second notification message is used to indicate that the resource block includes the first uplink control channel resource and the second uplink control channel resource, or to indicate that the resource block includes the first uplink control channel resource, the second uplink control channel resource, and the third uplink control channel resource. Correspondingly, the terminal device receives a second notification message from the network device, where the second notification message is used to indicate that the resource block includes the first uplink control channel resource and the second uplink control channel resource, or is used to indicate that the resource block includes the first uplink control channel resource, the second uplink control channel resource and the third uplink control channel resource.

The network device may inform the terminal device in advance, for example, the network device sends a second notification message to the terminal device, where the second notification message is used to indicate that the RB includes the first uplink control channel resource and the second uplink control channel resource, or to indicate that the RB includes the first uplink control channel resource, the second uplink control channel resource, and the third uplink control channel resource, so that the terminal device may determine the uplink control channel resources included in the RB. The second notification message may also be regarded as a notification message that the network device notifies the terminal device of the configured N resource sets, that is, the network device indicates the configured N resource sets for the terminal device through the second notification message, where the RB is an RB used for carrying uplink control channel resources in the N resource sets, the first uplink control channel resource and the second uplink control channel resource are uplink control channel resources included in the N resource sets, or the first uplink control channel resource, the second uplink control channel resource, and the third uplink control channel resource are uplink control channel resources included in the N resource sets.

In one possible design, when the first response information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, and the third response information corresponding to the third downlink control channel transmitted by the third uplink control channel resource is 1 bit: the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is an even number, the cyclic shift of the 2 candidate sequences included in the second uplink control channel resource is an even number, and the cyclic shift of the 2 candidate sequences included in the third uplink control channel resource is an even number, or the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is an odd number, the cyclic shift of the 2 candidate sequences included in the second uplink control channel resource is an odd number, and the cyclic shift of the 2 candidate sequences included in the third uplink control channel resource is an odd number.

In one possible design, when the first acknowledgement information is 1 bit, and the terminal device transmits the first acknowledgement information and the scheduling request through the first uplink control channel resource, the first uplink control channel resource includes 4 candidate sequences.

Under the condition that the first response information is 1 bit, the first uplink control channel resource can be just used for sending the first response information and the SR, so that the effect of fully utilizing the uplink control channel resource is achieved, the SR is sent without using an additional uplink control channel resource, the resources are saved, and the resource fragments are reduced.

In a third aspect, an apparatus for receiving an uplink control channel is provided, where the apparatus for receiving the uplink control channel may be a network device, or may be a chip in the network device. The device for receiving the uplink control channel has the function of realizing the network equipment designed by the method. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the specific structure of the apparatus for receiving an uplink control channel may include a processor and a transceiver. The processor and the transceiver may perform the respective functions in the method provided by the first aspect or any one of the possible designs of the first aspect. When the apparatus for receiving the uplink control channel is a network device, the transceiver may include a radio frequency circuit; when the means for receiving the uplink control channel is a chip within the network device, the transceiver may include an input/output interface, pins or circuits on the chip, etc.

In a fourth aspect, an apparatus for transmitting an uplink control channel is provided, where the apparatus for transmitting the uplink control channel may be a terminal device or a chip in the terminal device. The device for sending the uplink control channel has the function of realizing the terminal equipment in the method design. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the specific structure of the apparatus for transmitting the uplink control channel may include a processor and a transceiver. The processor and the transceiver may perform the respective functions in the method provided by the second aspect or any one of the possible designs of the second aspect. When the apparatus for transmitting the uplink control channel is a terminal device, the transceiver may include a radio frequency circuit; when the means for transmitting the uplink control channel is a chip within the terminal device, the transceiver may include an input/output interface, pins or circuits on the chip, etc.

In a fifth aspect, an apparatus for receiving an uplink control channel is provided, where the apparatus for receiving the uplink control channel may be a network device or a chip within the network device. The device for receiving the uplink control channel has the function of realizing the network equipment designed by the method. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the specific structure of the network device may include a processing module and a transceiver module. The processing module and the transceiver module may perform the respective functions in the method provided by the first aspect or any one of the possible designs of the first aspect.

In a sixth aspect, an apparatus for transmitting an uplink control channel is provided, where the apparatus for transmitting the uplink control channel may be a terminal device or a chip in the terminal device. The device for sending the uplink control channel has the function of realizing the terminal equipment in the method design. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the specific structure of the apparatus for transmitting the uplink control channel may include a processing module and a transceiver module. The processing module and the transceiver module may perform the respective functions in the method provided by the second aspect or any one of the possible designs of the second aspect.

In a seventh aspect, a communications apparatus is provided. The communication device may be a network device designed by the method or a chip arranged in the network device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored in the memory comprises instructions which, when executed by the processor, cause the communication apparatus to perform the method performed by the network device of the first aspect described above or any one of the possible designs of the first aspect.

In an eighth aspect, a communication device is provided. The communication device may be the terminal device designed in the above method, or a chip provided in the terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored in the memory comprises instructions which, when executed by the processor, cause the communication apparatus to perform the method performed by the terminal device of the second aspect described above or any one of the possible designs of the second aspect.

A ninth aspect provides a communication system comprising a network device as described in any one of the possible designs of the third aspect or the third aspect above and a terminal device as described in any one of the possible designs of the fourth aspect or the fourth aspect above.

A tenth aspect provides a computer storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform the method of the first aspect or any one of the possible designs of the first aspect.

In an eleventh aspect, there is provided a computer storage medium having instructions stored thereon, which when run on a computer, cause the computer to perform the method as set forth in the second aspect or any one of the possible designs of the second aspect.

In a twelfth aspect, there is provided a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method of the first aspect or any one of the possible designs of the first aspect.

In a thirteenth aspect, there is provided a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method of the second aspect described above or any one of the possible designs of the second aspect.

In the embodiment of the application, different terminal devices are not allocated with the same candidate sequence because the allocated uplink control channel carries 1-bit response information or 2-bit response information, so that the collision probability of the uplink control channel resources is reduced.

Drawings

Fig. 1 is a schematic view of an application scenario according to an embodiment of the present application;

fig. 2 is a flowchart of a method for transmitting and receiving uplink control channel resources according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of a network device sending a PDCCH and a terminal device receiving a PDSCH according to the PDCCH according to the embodiment of the present application;

fig. 4 is a mapping relationship between candidate sequences and subcarriers according to an embodiment of the present application;

fig. 5 is a mapping relationship between candidate sequences and subcarriers according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 8A-8B are schematic structural diagrams of a communication device according to an embodiment of the present disclosure.

Detailed Description

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

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

1) The terminal equipment: which may also be referred to as a terminal, includes devices that provide voice and/or data connectivity to a user and may include, for example, handheld devices having wireless connection capabilities or processing devices connected to wireless modems. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an Access Point (AP), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), or a user equipment (user device), etc. For example, mobile phones (or so-called "cellular" phones), computers with mobile terminals, portable, pocket, hand-held, computer-included or vehicle-mounted mobile devices, smart wearable devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), smart watches, smart helmets, smart glasses, smart bracelets, and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.

2) A network device, e.g., including a base station (e.g., access point), may refer to a device in an access network that communicates over the air-interface, through one or more cells, with wireless terminal devices. The base station may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The base station may also coordinate management of attributes for the air interface. For example, the base station may include an evolved Node B (NodeB or eNB or e-NodeB) in an LTE system or an evolved LTE system (LTE-Advanced, LTE-a), or may also include a next generation Node B (gNB) in a 5G NR system, which is not limited in the embodiments of the present application.

3) The uplink control channel is used to transmit uplink control information, where the uplink control information includes, for example, response information, and may also include a scheduling request. An uplink control channel is, for example, PUCCH or short PUCCH (short PUCCH), although the embodiment of the present invention is not limited thereto.

Herein, various aspects are described in the embodiment of the present application in combination with a PUCCH or a short PUCCH, but those skilled in the art should know that an uplink control channel described in the embodiment of the present application is not limited to the PUCCH or the short PUCCH.

4) The scheduling request is, for example, a Scheduling Request (SR), or may have other names. The SR is used for the terminal device to apply for transmitting uplink data to the network device, and the network device configures resources for the terminal device to transmit the uplink data through an uplink scheduling signaling (UL grant) after receiving the SR sent by the terminal device.

5) The terms "system" and "network" in the embodiments of the present application may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present application. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

Unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing between a plurality of objects, and do not limit the sequence, timing, priority, or importance of the plurality of objects.

The technical solution provided herein can be applied to a 5G NR system (hereinafter, referred to as NR system), or a next generation mobile communication system, or other similar communication systems.

Having described some of the concepts related to the embodiments of the present application, the technical background of the embodiments of the present application is described below.

The LTE system supports transmission of PUCCH. PUCCH generally occupies 13 or 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols within one subframe (subframe) per DFT-s-OFDM symbol to transmit Uplink Control Information (UCI). The PUCCH format (format)1a/1b is used to transmit 1 bit (bit) or 2 bit ACK/NACK. In order to improve the coverage performance of the PUCCH formats 1a/1b, the PUCCH formats 1a/1b are transmitted by using a sequence modulation method, that is, a signal to be transmitted is modulated onto a Computer Generated Sequence (CGS) on all OFDM symbols for transmitting Uplink Control Information (UCI). For 1-bit information or 2-bit information, the PUCCH differs in whether the signal modulated on the sequence is Binary Phase Shift Keying (BPSK) or Quadrature Phase Shift Keying (QPSK), and the allocated sequence is not different. In addition, PUCCH format1 is used for a terminal device to report a Scheduling Request (SR) to a base station, and it adopts the same structure as PUCCH format1a/1b to transmit information, but does not need to modulate information on the sequence of CGS carried on each OFDM symbol.

In the NR system, transmission of the short PUCCH has been supported, wherein the short PUCCH takes 1 or 2 OFDM symbols/DFT-S-OFDM symbol to transmit information, and can be used to transmit 1-2 bits of information. For the short PUCCH, when carrying 1-bit information or 2-bit information, it adopts a sequence selection mode to transmit information. Specifically, for 1-bit information, the base station allocates sequences corresponding to two cyclic shifts (cyclic shifts) of 1 CGS to the terminal device, and the sequences corresponding to the cyclic shifts are referred to as candidate sequences, where the two candidate sequences are in one-to-one correspondence with two states to be transmitted, that is, respectively correspond to two states of "0" and "1"; for 2-bit information, the base station allocates candidate sequences corresponding to 4 cyclic shifts of 1 CGS to the terminal device, where the 4 candidate sequences correspond to 4 states to be transmitted one-to-one, that is, correspond to four states of "00", "01", "10", and "11", respectively. In which, each time a CGS performs a cyclic shift, a new sequence is generated, and the generated sequence is called a candidate sequence, and the candidate sequence corresponds to the cyclic shift.

Specifically, the base station schedules the terminal device to receive downlink data transmitted through a Physical Downlink Shared Channel (PDSCH) through a Physical Downlink Control Channel (PDCCH). The terminal device receives the PDCCH, may receive the PDSCH according to an instruction of the PDCCH, and determines whether reception is correct or incorrect according to a reception state of downlink data carried by the PDSCH, for example, according to whether Cyclic Redundancy Check (CRC) is passed or CRC is not passed, thereby correspondingly generating acknowledgement information, which includes, for example, Acknowledgement (ACK) or Negative Acknowledgement (NACK). In addition, after receiving the PDCCH, the terminal device determines a PUCCH resource corresponding to the PDSCH according to an index of a first Control Channel Element (CCE) occupied by the PDCCH and a resource pool of the PUCCH resource, and transmits the generated response information through the determined PUCCH resource. When the response information is 1 bit, 2 candidate sequences need to be allocated, and when the response information is 2 bits, 4 candidate sequences need to be allocated. In the NR system, when the response information is 1-bit or 2-bit allocated sequences, there is a case where the sequences allocated to different response information are the same because of 1-bit or 2-bit response information. For example, there may be at most 12 sequences generated by cyclic shift of the same root sequence in a resource block with 12 subcarriers, and at least two uplink control channels may be supported in a resource block for transmitting 2 pieces of acknowledgement information, for example, acknowledgement information of two user equipments. The sequence corresponding to 4 cyclic shifts 0,3,6,9 in a resource block is used to transmit a 2-bit acknowledgement message, and the sequence corresponding to cyclic shifts 1, 4, 7, 10 can be used to transmit another 2-bit acknowledgement message. And the uplink control channel composed of the sequences corresponding to cyclic shifts 0 and 6 can be used to transmit one 1-bit response message, and the uplink control channel composed of the sequences corresponding to cyclic shifts 3 and 9 can be used to transmit another 1-bit response message, which has the advantage that the distance between two cyclic shifts corresponding to 1-bit message is 6, which is the maximum distance possible. However, when a channel composed of sequences corresponding to cyclic shifts 0,3,6, and 9 is used to transmit 2-bit acknowledgement information, at least 2 candidate sequences of an uplink control channel transmitting 1-bit acknowledgement information are occupied. Thus, although the cyclic shift distance for the 1-bit acknowledgement information is 6, this allocation scheme causes additional channel allocation conflicts.

In view of this, the technical solution of the embodiment of the present application is provided for determining PUCCH resources and reducing collision of PUCCH resources. In this embodiment of the present application, the determined PUCCH resource may be a short PUCCH resource, or may also be a PUCCH resource.

An application scenario of the embodiment of the present application is described below, please refer to fig. 1, which is a schematic diagram of the application scenario. Fig. 1 includes a network device and a terminal device, where the network device may allocate an uplink control channel resource to the terminal device, so that the terminal device may send response information to the network device through the allocated uplink control channel resource. The network device in fig. 1 is, for example, AN Access Network (AN) device, such as a base station. In this embodiment, since the scheme of the present application mainly relates to an access network device and a terminal device, a core network device is not shown in fig. 1. The access network device is, for example, a gNB in an NR system.

The technical scheme provided by the embodiment of the application is described below with reference to the accompanying drawings.

Referring to fig. 2, an embodiment of the present application provides a method for transmitting and receiving an uplink control channel, and in the following description, the method is applied to the application scenario shown in fig. 1 as an example. The flow of the method is described below.

S21, when the terminal device accesses the network or after the terminal device accesses the network, the network device configures a resource set for the terminal device, where the resource set may also be understood as a PUCCH resource pool, for example, the network device may configure N PUCCH resource pools for the terminal device, where N is a positive integer. The physical resource corresponding to the PUCCH resource pool corresponding to the 1-bit response information is a subset of the physical resource corresponding to the PUCCH resource pool corresponding to the 2-bit response information.

For example, the network device may configure N PUCCH resource pools for the terminal device through a high-level signaling, and the terminal device may determine the N PUCCH resource pools configured by the network device after receiving the high-level signaling sent by the network device, where the high-level signaling is, for example, Radio Resource Control (RRC) signaling.

Or the network device may configure N PUCCH resource pools for the terminal device through a message (Msg)2 or Msg4 signaling in the initial access process, and the terminal device may determine the N PUCCH resource pools after receiving the Msg2 or Msg4 signaling sent by the network device.

Here, the terminal device may be one terminal device or multiple terminal devices, that is, the network device may configure N PUCCH resource pools exclusively for one terminal device, or the network device may configure N PUCCH resource pools for multiple terminal devices, and then the N PUCCH resource pools may be used by multiple terminal devices.

Wherein S21 is an optional step.

S22, the network device sends the first downlink control channel to the terminal device, and then the terminal device receives the first downlink control channel.

S23, the terminal device sends the first response information to the network device through the first uplink control channel resource, and the network device receives the first response information from the terminal device through the first uplink control channel resource.

The network device may transmit downlink data to the terminal device, and before transmitting the downlink data, the network device first schedules the terminal device to receive the downlink data, and then the network device may send a downlink control channel to the terminal device, where the downlink control channel is, for example, a PDCCH. For example, the network device sends the first downlink control channel to the terminal device, that is, the network device allocates the first uplink control channel resource to the terminal device. Of course, this is only an example, and the network device may also allocate the second uplink control channel resource to the terminal device, and then send the second downlink control channel to the terminal device. The uplink control channel resource is, for example, a PUCCH resource or, for example, a short PUCCH resource. The relationship between the downlink control channel and the uplink control channel resources will be described later.

The first downlink control channel may be used to schedule downlink data, and specifically, the terminal device may send a downlink control signaling to the terminal device through the PDCCH, and the terminal device receives the downlink control signaling through the PDCCH, where the downlink control signaling includes Downlink Control Information (DCI), and the downlink control signaling may be used to schedule downlink data to the terminal device. After the network device sends the first downlink control channel to the terminal device, the network device may also send downlink data to the terminal device, for example, if the network device sends downlink data to the terminal device through the PDSCH, the terminal device receives the downlink data through the PDSCH according to the received indication of the first downlink control channel. After the terminal device receives the downlink data, it may generate response information, for example, if the terminal device successfully receives the downlink data, the generated response information is ACK, and if the terminal device fails to receive the downlink data, the generated response information is NACK. Since the terminal device receives the first downlink control channel, the response information generated by the terminal device is the first response information. In addition, the first downlink control channel may be used to determine uplink control channel resources for transmitting the first acknowledgement information, in addition to scheduling downlink data. The terminal device may determine the uplink control channel resource according to the first downlink control channel, for example, the terminal device may determine the uplink control channel resource according to an index of a first CCE occupied by the first downlink control channel and/or a signaling carried by a PDCCH, and as can be known from the foregoing description, the terminal device determines the first uplink control channel resource.

The source of the response message and how to send the response message will be described first with reference to fig. 3. As shown in fig. 3, the network device transmits a PDCCH, which may indicate a PDSCH within the same time slot. The terminal equipment receives the PDCCH, can receive the PDSCH according to the instruction of the PDCCH, judges whether the receiving is correct or incorrect according to the receiving state of the downlink data carried by the PDSCH, such as CRC or failure of CRC, and accordingly generates ACK or NACK. And the terminal equipment transmits response information on the determined PUCCH resource according to the indication information of the PDCCH.

In this embodiment, the PUCCH resources include candidate sequences, and cyclic shifts of the candidate sequences included in one PUCCH resource may belong to one cyclic shift set, and one cyclic shift set may include 4 cyclic shifts of one root sequence. It can be understood that PUCCH resources are used to transmit response information, the response information is transmitted by a sequence selection method, one root sequence may obtain different candidate sequences through different cyclic shifts, one candidate sequence corresponds to one state of the response information, one response information has multiple states, for example, in the case of 1 bit, there are two states of ACK and NACK, in the case of 2 bits, there are 4 states, and then, there may be a one-to-one correspondence relationship among the cyclic shifts, the candidate sequences, and the states of the response information. One PUCCH resource may include 4 candidate sequences, and then the cyclic shift of the candidate sequence included in the PUCCH resource is the entire cyclic shift in the corresponding cyclic shift set, or one PUCCH resource may also include 2 candidate sequences, and then the cyclic shift of the candidate sequence included in the PUCCH resource is a partial cyclic shift in the corresponding cyclic shift set, that is, the cyclic shift of the candidate sequence included in the PUCCH resource is a subset of the corresponding cyclic shift set, for example, the cyclic shift of the candidate sequence included in the PUCCH resource is 2 cyclic shifts in the corresponding cyclic shift set. The corresponding cyclic shift set is a cyclic shift set to which cyclic shifts of candidate sequences included in the PUCCH resources belong.

In the embodiment of the present application, one Resource Block (RB) may be composed of a plurality of continuous or equally spaced subcarriers, for example, 12 subcarriers. One resource block may include at least 8 candidate sequences, and 8 candidate sequences of the at least 8 candidate sequences correspond to 8 cyclic shifts of a root sequence, where the root sequence is, for example, CGS, or a constant amplitude auto-correlation (CAZAC) sequence, or a sequence generated by a Zadoff-Chu sequence. The candidate sequence may be generated according to the following equation 1:

wherein, { y_s，iIs a candidate sequence, R is the length of the candidate sequence, R is a positive integer, { x_iI 0,1,2, R-1 is a root sequence, i.e., the candidate sequence y can be considered as the candidate sequence_s，iIs formed by the root sequence x_iI ═ 0,1, 2., R-1} is obtained by cyclic shift, m_sIs the candidate sequence y_s,iCyclic shift of, m_sIs an integer, s is an index representing a different sequence, and j is a unit of an imaginary number. And mapping the sequence to the subcarrier of the RB to form an uplink control channel resource.

As an example, m_s＝a₀+n_s，a₀Is an initial cyclic shift, is a real number, n_sIs a proprietary cyclic shift, and is a real number. Terminal devices of different cells may correspond to a at the same time₀The same terminal device corresponds to a at the same time₀The same value of (a) may correspond to the same terminal device at different times₀Different values of (c). n is_sIndicating a proprietary cyclic shift, i.e. n for different candidate sequences of the same terminal device_sDifferent values of (c). Where s is an index representing different candidate sequences. For example, s may be 0,1,2, …, corresponding to the candidate sequence y_0,i|i＝0,1,2,..,R-1},{y_1,i|i＝0,1,2,...,R-1},{y_2,i|i＝0,1,2,...,R-1},...。

The candidate sequence in formula 1 may be mapped to consecutive G subcarriers in the frequency domain, or mapped to G subcarriers distributed at equal intervals in the frequency domain, and the uplink control channel resource is obtained after mapping, where G is a positive integer. G consecutive subcarriers or subcarriers distributed at equal intervals form a subcarrier group. The multiple candidate sequences in equation 1 may be mapped to different subcarrier groups. For candidate sequences mapped to different subcarrier groups, n_sEven if the values of (a) are the same, they are considered to be different channels, e.g. when s is 0 and s is 5, n is_sCan be the same, but because y_s,iI-0, 1,2, R-1 is mapped to different subcarrier groups, corresponding to different channels. For multiple candidate sequences mapped to the same subcarrier group, a₀The values of (a) may be the same. For two candidate sequences mapped to different subcarrier groups, a₀The values of (A) may be the same or different.

The PUCCH resources in the PUCCH resource pool have a mapping relationship with the downlink control channel, or it is understood that the PUCCH resources in the PUCCH resource pool have a mapping relationship with the first CCE occupied by the downlink control channel, and the corresponding PUCCH resources can be determined by the first CCE occupied by the downlink control channel and/or an indication of signaling in the downlink control channel, and each PUCCH resource is used for transmitting corresponding response information. Then, the network device generates the first downlink control channel before sending the first downlink control channel, and the network device may determine the uplink control channel resource allocated to the terminal device first, and then generate the downlink control channel corresponding to the allocated uplink control channel resource. For example, if the network device determines that the uplink control channel resource allocated to the terminal device is the first uplink control channel resource, the network device generates and transmits the first downlink control channel.

When the response information corresponding to one downlink control channel is 2 bits, the PUCCH resource for carrying the response information includes 4 candidate sequences, and when the response information is 1 bit, the PUCCH resource for carrying the response information includes 2 candidate sequences, and the 2 candidate sequences are subsets of the 4 candidate sequences. Then, if the acknowledgement information is 1 bit, the PUCCH resource for carrying the acknowledgement information includes 2 candidate sequences, and the 2 candidate sequences are a subset of the 4 candidate sequences, thereby avoiding PUCCH resource collision. Assuming a scenario, of candidate sequences included in one RB, 4 candidate sequences with cyclic shift {0,3,6,9} are allocated to a short PUCCH carrying 2-bit acknowledgement information, and 2 candidate sequences with cyclic shift {0,6} or {3, 9} are allocated to a short PUCCH carrying 1-bit acknowledgement information, for example, short PUCCHs corresponding to different downlink control channels, and the two short PUCCHs are scheduled by two different PDCCHs at the same time, PUCCH resource collision may occur. However, in the embodiment of the present application, 4 candidate sequences cyclically shifted by {0,3,6,9} are one PUCCH resource, and then the PUCCH resource is allocated to only one terminal device at a time, and the PUCCH resource is not allocated to other terminal devices at the time no matter whether the terminal device uses 4 candidate sequences included in the PUCCH resource or only uses 2 candidate sequences included in the PUCCH resource, so that the probability of PUCCH resource collision is reduced.

Take one RB as an example. The RB includes, for example, the first uplink control channel resource and the second uplink control channel resource as described above, the first uplink control channel resource is used to transmit first response information corresponding to the first downlink control channel, the second uplink control channel resource is used to transmit second response information corresponding to the second downlink control channel, and a set to which cyclic shifts of candidate sequences included in the first uplink control channel resource belong is { x ″₁，x₁+3，x₁+6，x₁+9, the set of cyclic shifts of the candidate sequence included in the second uplink control channel resource is { x }₂，x₂+3，x₂+6，x₂+9}，x₁And x₂Is not equal to x₁And x₂Are all elements in {0,1,2 }. When the first acknowledgement information transmitted by the first uplink control channel resource is 2 bits, the first uplink control channel resource includes 4 candidate sequences, and the cyclic shift of the 4 candidate sequences is x₁，x₁+3，x₁+6，x₁+9, when the first acknowledgement information transmitted by the first uplink control channel resource is 1 bit, the first uplink control channel resource includes 2 candidate sequences, and cyclic shifts of the 2 candidate sequences are x respectively₁、x₁+6, or is x₁+3、x₁+9, where the first acknowledgement information is acknowledgement information corresponding to the first downlink control channel, that is, acknowledgement information of downlink data scheduled by the first downlink control channel; when the second acknowledgement information transmitted by the second uplink control channel resource is 2 bits, the second uplink control channel resource includes 4 candidate sequences, and the cyclic shift of the 4 candidate sequences is x₂，x₂+3，x₂+6，x₂+9, when the second acknowledgement information transmitted by the second uplink control channel resource is 1 bit, the second uplink control channel resource includes 2 candidate sequences, and the cyclic shifts of the 2 candidate sequences are x respectively₂、x₂+6, or is x₂+3、x₂+9, where the second response information is response information corresponding to the second downlink control channel, that is, response information of downlink data scheduled by the second downlink control channel. Wherein, doThe same cyclic shift corresponds to different states of the acknowledgement information, for example, when the second acknowledgement information transmitted by the second uplink control channel resource is 1 bit, the second uplink control channel resource includes 2 candidate sequences, and the cyclic shifts of the 2 candidate sequences are x respectively₂、x₂+6, then x₂The state of the corresponding second acknowledgement information is, for example, "ACK", x₂The state of the second response information corresponding to +6 is, for example, "NACK".

The response information corresponding to the downlink control channel may be understood as that the uplink control channel is used to transmit response information, the transmitted response information is response information of downlink data scheduled by the downlink control channel, and the response information of the downlink data is feedback of a receiving state of the downlink data by the terminal device.

It can be seen that, if the response information corresponding to the downlink control channel is 1 bit, the cyclic shifts corresponding to the 2 candidate sequences included in the first uplink control channel resource for carrying the response information are x respectively₁、x₁+6, or is x₁+3、x₁+9, the second uplink control channel resource is the same, that is, in this way, the distance of the candidate sequence corresponding to the uplink control channel resource in the time domain can be increased, so as to reduce interference and help to resist multipath fading.

As can be seen from the foregoing description, when the first acknowledgement information is 2 bits, the first uplink control channel resource includes 4 candidate sequences, and cyclic shifts of the 4 candidate sequences are x₁，x₁+3，x₁+6，x₁+9, when the first acknowledgement information is 1 bit, the first uplink control channel resource includes 2 candidate sequences, and cyclic shifts of the 2 candidate sequences are x respectively₁、x₁+6, or is x₁+3、x₁+9. Then, when the first acknowledgement information is 1 bit, the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is x₁、x₁+6 or x₁+3、x₁+9, which may be specified by the protocol, the terminal device may know according to the specification of the protocol, or may be indicated by the network device, for example, the network device sends a first notification message to the terminal device, where the first notification message is used to indicate that cyclic shift of 2 candidate sequences included in the first uplink control channel resource is x₁、x₁+6 or x₁+3、x₁+9, after receiving the first notification message, the terminal device may determine 2 candidate sequences included in the first uplink control channel resource.

As an optional scheme, the RB may include, in addition to the first uplink control channel resource and the second uplink control channel resource, a third uplink control channel resource, where the third uplink control channel resource is used to transmit third response information corresponding to a third downlink control channel, and a set to which cyclic shifts of candidate sequences included in the third uplink control channel resource belong is { x }₃，x₃+3，x₃+6，x₃+9}，x₁、x₂、x₃Are all not equal, and x₃Is an element in {0,1,2 }. Wherein, a₀Can be x₁、x₂Or x₃。

Then the network device may inform the terminal device in advance of which uplink control channel resources are included in an RB, for example, the network device sends a second notification message to the terminal device, where the second notification message is used to indicate that the RB includes the first uplink control channel resource and the second uplink control channel resource, or is used to indicate that the RB includes the first uplink control channel resource, the second uplink control channel resource, and the third uplink control channel resource. The second notification message may also be regarded as a notification message that the network device notifies the terminal device of the configured N PUCCH resource pools, that is, the network device indicates the configured N PUCCH resource pools to the terminal device through the second notification message, where the RB is an RB used for carrying uplink control channel resources in the N PUCCH resource pools, and the first uplink control channel resource and the second uplink control channel resource are uplink control channel resources included in the N PUCCH resource pools, or the first uplink control channel resource, the second uplink control channel resource, and the third uplink control channel resource are uplink control channel resources included in the N PUCCH resource pools.

As an optional scheme, an offset (offset) field may also be carried in the first downlink control channel, and the offset field is used to distinguish a case where PDCCHs (slots) of PDCCH-scheduled PDSCHs transmit PUCCHs on the same slot. For example, the network device schedules terminal device 1 through the PDCCH occupying CCE1 in slot n, schedules terminal device 2 through the PDCCH occupying CCE1 in slot n +1, and schedules terminal device 1 and terminal device 2 to send PUCCH to the network device in slot n +5, because the network device uses the same PDCCH for scheduling and the terminal device determines PUCCH resources according to the PDCCH, terminal device 1 and terminal device 2 may select the same PUCCH resources, which may cause PUCCH sent by terminal device 1 and terminal device 2 to collide, and this problem may be solved through the fset field. On slot n, for example, a PDCCH occupying CCE1 schedules PDSCH for terminal device 1, the PDCCH carries an offset of 0, and on slot n +1, the PDCCH occupying CCE1 schedules PDSCH for terminal device 2, the PDCCH carries an offset of 1, and different values of the offset indicate different PUCCH resource pools to which the PUCCH belongs, for example, the network device configures N PUCCH resource pools for the terminal device in advance, or the protocol defines N PUCCH resource pools, each of the N PUCCH resource pools including at least one PUCCH resource, then, for example, an offset of 0 indicates that a PUCCH resource should be selected from PUCCH resource pool 0, an offset of 1 indicates that a PUCCH resource should be selected from PUCCH resource pool 1, terminal device 1 may select a PUCCH resource in PUCCH resource pool 0, terminal device 2 may select a PUCCH resource in PUCCH resource pool 1, and obviously, two terminal devices may select different PUCCH resources, thereby reducing the probability of PUCCH resource collision.

In addition, if one RB includes a first uplink control channel resource and a second uplink control channel resource, and the network device may allocate the first uplink control channel resource and the second uplink control channel resource to the same terminal device, different pieces of response information corresponding to PDCCHs in different slots of the same terminal device use the first uplink control channel resource and the second uplink control channel resource, or the network device may also allocate the first uplink control channel resource and the second uplink control channel resource to different terminal devices.

In this embodiment of the present application, if the first acknowledgement information transmitted by the first uplink control channel resource is 2 bits and the second acknowledgement information transmitted by the second uplink control channel resource is also 2 bits, the first uplink control channel resource includes 4 candidate sequences, and cyclic shift of the 4 candidate sequences is x₁，x₁+3，x₁+6，x₁+9, the second uplink control channel resource includes 4 candidate sequences, and the cyclic shift of the 4 candidate sequences is x₂，x₂+3，x₂+6，x₂+ 9; if the first acknowledgement information transmitted by the first uplink control channel resource is 2 bits and the second acknowledgement information transmitted by the second uplink control channel resource is 1 bit, the first uplink control channel resource comprises 4 candidate sequences, and the cyclic shift of the 4 candidate sequences is x₁，x₁+3，x₁+6，x₁+9, the second uplink control channel resource includes 2 candidate sequences, and 2 cyclic shifts of the 2 candidate sequences may be x₂、x₂+6, or x₂+3、x₂+ 9; if the first acknowledgement information transmitted by the first uplink control channel resource is 1 bit and the second acknowledgement information transmitted by the second uplink control channel resource is 2 bits, the second uplink control channel resource comprises 4 candidate sequences, and the cyclic shift of the 4 candidate sequences is x₂，x₂+3，x₂+6，x₂+9, the first uplink control channel resource includes 2 candidate sequences, and 2 cyclic shifts of the 2 candidate sequences may be x₁、x₁+6, or x₁+3、x₁+ 9; if the first response information transmitted by the first uplink control channel resource is 1 bit and the second response information transmitted by the second uplink control channel resource is 1 bit, the first uplink control channel resourceIncludes 2 candidate sequences, and the second uplink control channel resource includes 2 candidate sequences, then the 2 cyclic shifts of the 2 candidate sequences included in the first uplink control channel resource are even numbers, and the 2 cyclic shifts of the 2 candidate sequences included in the second uplink control channel resource are also even numbers, for example, x₁＝0，x₂If 1,2 cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are 0 and 6, and 2 cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are 4 and 10, respectively, or 2 cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are odd, and 2 cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are also odd, for example, x is x₁＝0，x₂When the number of cyclic shifts of 2 candidate sequences included in the first uplink control channel resource is 1,2 cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are 3, 9, and 2 cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are 1, 7, respectively. The interval between different even numbers is at least 2, avoiding the case that the interval between 2 candidate sequences is 1, and the same is true for different odd numbers. In this way, the distance of the candidate sequence corresponding to the uplink control channel resource in one RB in the time domain can be increased, so that the interference is reduced, and the method is helpful for resisting multipath fading.

Or, if one RB includes the first uplink control channel resource, the second uplink control channel resource, and the third uplink control channel resource, and the network device may allocate the first uplink control channel resource, the second uplink control channel resource, and the third uplink control channel resource to the same terminal device, the response information corresponding to the PDCCH of the same terminal device in different slots uses the first uplink control channel resource, the second uplink control channel resource, and the third uplink control channel resource, or the network device may allocate the first uplink control channel resource, the second uplink control channel resource, and the third uplink control channel resource to different terminal devices.

If the first response information transmitted by the first uplink control channel resource is 2 bits, the second response information transmitted by the second uplink control channel resource is 2 bits, and the third uplink control channel resource is used for transmitting the second response informationIf the third acknowledgement information transmitted by the channel control resource is 2 bits, the first uplink control channel resource includes 4 candidate sequences, and the cyclic shift of the 4 candidate sequences is x₁，x₁+3，x₁+6，x₁+9, the second uplink control channel resource includes 4 candidate sequences, and the cyclic shift of the 4 candidate sequences is x₂，x₂+3，x₂+6，x₂+9, the third uplink control channel resource includes 4 candidate sequences, and the cyclic shift of the 4 candidate sequences is x₃，x₃+3，x₃+6，x₃+ 9; if the first acknowledgement information transmitted by the first uplink control channel resource is 2 bits, the second acknowledgement information transmitted by the second uplink control channel resource is 2 bits, and the third acknowledgement information transmitted by the third uplink control channel resource is 1 bit, the first uplink control channel resource comprises 4 candidate sequences, and the cyclic shift of the 4 candidate sequences is x₁，x₁+3，x₁+6，x₁+9, the second uplink control channel resource includes 4 candidate sequences, and 4 cyclic shifts of the 4 candidate sequences may be x₂，x₂+3，x₂+6，x₂+9, the third uplink control channel resource includes 2 candidate sequences, and the cyclic shift of the 2 candidate sequences is x₃，x₃+6, or is x₃+3，x₃+ 9; if the first response information transmitted by the first uplink control channel resource is 1 bit, the second response information transmitted by the second uplink control channel resource is 2 bits, the third response information transmitted by the third uplink control channel resource is 2 bits, or the first response information transmitted by the first uplink control channel resource is 2 bits, the second response information transmitted by the second uplink control channel resource is 1 bit, and the third response information transmitted by the third uplink control channel resource is 2 bits, the first response information transmitted by the first uplink control channel resource can be referred to as 2 bits, the second response information transmitted by the second uplink control channel resource is 2 bits, and the third response information transmitted by the third uplink control channel resource is introduction of 1 bit; second uplink control channel resource transmission if the first acknowledgement information of the first uplink control channel resource transmission is 2 bitsThe acknowledgement information is 1 bit, the third acknowledgement information transmitted by the third uplink control channel resource is 1 bit, the first uplink control channel resource includes 4 candidate sequences, and the cyclic shift of the 4 candidate sequences is x₁，x₁+3，x₁+6，x₁+9, the second uplink control channel resource includes 2 candidate sequences, 2 cyclic shifts of the 2 candidate sequences may be even numbers, the third uplink control channel resource includes 2 candidate sequences, 2 cyclic shifts of the 2 candidate sequences may be even numbers, or the first uplink control channel resource includes 4 candidate sequences, cyclic shifts of the 4 candidate sequences are x₁，x₁+3，x₁+6，x₁+9, the second uplink control channel resource includes 2 candidate sequences, 2 cyclic shifts of the 2 candidate sequences may be odd numbers, the third uplink control channel resource includes 2 candidate sequences, and 2 cyclic shifts of the 2 candidate sequences may be odd numbers; if the first response information transmitted by the first uplink control channel resource is 1 bit, the second response information transmitted by the second uplink control channel resource is 1 bit, the third response information transmitted by the third uplink control channel resource is 2 bits, or the first response information transmitted by the first uplink control channel resource is 1 bit, the second response information transmitted by the second uplink control channel resource is 2 bits, and the third response information transmitted by the third uplink control channel resource is 1 bit, the first response information transmitted by the first uplink control channel resource can be referred to as 2 bits, the second response information transmitted by the second uplink control channel resource is 1 bit, and the third response information transmitted by the third uplink control channel resource is introduced by 1 bit; if the first acknowledgement information transmitted by the first uplink control channel resource is 1 bit, the second acknowledgement information transmitted by the second uplink control channel resource is 1 bit, and the third acknowledgement information transmitted by the third uplink control channel resource is also 1 bit, the first uplink control channel resource includes 2 candidate sequences, the cyclic shift of the 2 candidate sequences may be an even number, the second uplink control channel resource includes 2 candidate sequences, the 2 cyclic shifts of the 2 candidate sequences may be an even number, the third uplink control channel resource includes 2 candidate sequences, and the 2 candidate sequencesThe 2 cyclic shifts of (a) may be even numbers, or the first uplink control channel resource includes 2 candidate sequences, the cyclic shifts of the 2 candidate sequences may be odd numbers, the second uplink control channel resource includes 2 candidate sequences, the 2 cyclic shifts of the 2 candidate sequences may be odd numbers, the third uplink control channel resource includes 2 candidate sequences, and the 2 cyclic shifts of the 2 candidate sequences may be odd numbers.

In the case that the uplink control channel resource includes 4 candidate sequences, the network device may not need to inform the terminal device which candidate sequences the uplink control channel resource includes, for example, the protocol may define cyclic shifts of the 4 candidate sequences included in the uplink control channel resource, and then if the acknowledgement information is 2 bits, the terminal device may naturally know that the uplink control channel resource includes 4 candidate sequences. On the other hand, in the case that the uplink control channel resource includes 1 bit, if 2 candidate sequences included in the uplink control channel resource are determined by the network device, the network device further needs to notify the terminal device. If the network device allocates the first uplink control channel resource and the second uplink control channel resource to different terminal devices, the network device may send a first notification message to each of the allocated terminal devices, where the first notification message is used to indicate that cyclic shifts of the 2 candidate sequences included in the first uplink control channel resource are even numbers and cyclic shifts of the 2 candidate sequences included in the second uplink control channel resource are even numbers, or is used to indicate that cyclic shifts of the 2 candidate sequences included in the first uplink control channel resource are odd numbers and cyclic shifts of the 2 candidate sequences included in the second uplink control channel resource are odd numbers. The first notification message is carried, for example, by PDCCH, or by higher layer signaling, for example, RRC signaling.

In the foregoing description, only the case where the terminal device sends the response information to the network device is referred to. In some cases, the terminal device may further send an SR to the network device, and in the NR system, there may be a case where one terminal device needs to send ACK/NACK and SR simultaneously, as well as the short PUCCH. If the terminal device needs to send the response information and the SR at the same time, taking the case that the terminal device needs to send the first response information and the SR at the same time through the first uplink control channel resource as an example, different situations may be included:

1. the first acknowledgement information is 1 bit, and SR is 1 bit.

In this case, the first uplink control channel resource may include 4 candidate sequences, and cyclic shifts of the 4 candidate sequences are x respectively₁，x₁+3，x₁+6，x₁+9. The 4 candidate sequences respectively correspond to different states of the response information and the SR, for example, the states of the response information and the SR corresponding to the 4 candidate sequences are { (a, SR exists), (a, SR does not exist), (N, SR exists), (N, SR does not exist) }, where a represents ACK, N represents NACK, the existence of SR means that the terminal device has transmitted the SR, and the absence of SR means that the terminal device has not transmitted the SR.

That is, under the condition that the first acknowledgement information is 1 bit, the first uplink control channel resource can be just used to send the first acknowledgement information and the SR, so that the effect of fully utilizing the uplink control channel resource is achieved, and no additional uplink control channel resource is needed to send the SR, which is beneficial to saving resources and reducing resource fragments.

2. The first acknowledgement information is 2 bits and SR is 1 bit.

In this case, the first acknowledgement information and the SR occupy 3 bits in total, and 8 candidate sequences are required to be carried, so that the number of candidate sequences included in the first uplink control channel resource is insufficient. Then, in addition to allocating the first uplink control channel resource to the terminal device, the network device may also allocate additional uplink control channel resources to the terminal device, for example, allocate a fourth uplink control channel resource, where the fourth uplink control channel resource includes 4 candidate sequences, and then the 4 candidate sequences included in the first uplink control channel resource and the 4 candidate sequences included in the fourth uplink control channel resource are used to transmit the first acknowledgement information and the SR.

The fourth uplink control channel resource may be a PUCCH resource pre-configured by the network device or pre-defined by the protocol, for example, the fourth uplink control channel resource may belong to N PUCCH resource pools, or may not be a PUCCH resource pre-configured by the network device or pre-defined by the protocol, for example, the fourth uplink control channel resource does not belong to N PUCCH resource pools, but is an additional resource, which facilitates uniform management of resources.

As described above, the network device sends the first downlink control channel to the terminal device, and after the terminal device receives the first downlink control channel, it may be determined that the first uplink control channel resource is allocated by the network device. For example, the terminal device determines the first uplink control channel resource according to the index of the first CCE occupied by the first downlink control channel and/or the signaling carried by the PDCCH. The terminal device may know the bit number of the first acknowledgement information, and if the first acknowledgement information is 2 bits, the terminal device may directly determine that the first uplink control channel resource includes 4 candidate sequences, or may determine that the cyclic shift of the 4 candidate sequences is x₁，x₁+3，x₁+6，x₁+9, if the first acknowledgement information is 1 bit, the terminal device may determine that the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is x through the specification of the protocol or a first notification message sent by the network device₁，x₁+6 or x₁+3，x₁+9. Therefore, the terminal device can send the first acknowledgement information to the network device through the first uplink control channel resource.

Generally, obtaining the uplink control channel resource through the candidate sequence may be mapping elements of the candidate sequence to subcarriers of a subcarrier group in sequence, so as to obtain the uplink control channel resource, for example, as shown in fig. 4:

s41, mapping the candidate sequence to the sub-carrier.

For example, a first element of the candidate sequence may be mapped to a first subcarrier in the set of subcarriers, a second element of the candidate sequence may be mapped to a second subcarrier in the set of subcarriers, and so on.

S42, Inverse Fast Fourier Transform (IFFT). Alternatively, the Inverse Fourier Transform (IFT) may be used, and fig. 4 illustrates an example of the inverse fast Fourier transform.

And generating a signal to be transmitted through inverse Fourier transform or inverse fast Fourier transform, and then transmitting the signal to be transmitted. The subcarriers within the subcarrier group may be consecutive subcarriers as shown in fig. 4, or subcarriers distributed at equal intervals. As shown in fig. 5, the black subcarriers are the subcarriers in the subcarrier group, and the candidate sequence is mapped to the black subcarriers.

The terminal device sends the first response information to the network device, the network device receives the first response information through the first uplink control channel resource, and the network device can determine the state of the received first response information according to the cyclic shift of the candidate sequence included in the first uplink control channel resource, so as to determine the receiving state of the terminal device for the downlink data.

By the technical scheme provided by the embodiment of the application, the collision probability of PUCCH resources can be effectively reduced.

The following describes the apparatus provided in the embodiments of the present application with reference to the drawings.

Fig. 6 shows a schematic structure of an apparatus 600 for receiving an uplink control channel. The apparatus 600 for receiving an uplink control channel may implement the functions of the network device mentioned above. The apparatus 600 for receiving an uplink control channel may be the network device described above, or may be a chip disposed in the network device described above. The apparatus 600 for receiving an uplink control channel may include a processor 601 and a transceiver 602. Among other things, the processor 601 may be used to perform S21 and S22 in the embodiment shown in fig. 2, S41 and S42 in the embodiment shown in fig. 4, and/or other processes for supporting the techniques described herein. The processor 601 executes S22, and is mainly configured to determine uplink control channel resources allocated to the terminal device, thereby generating a downlink control channel. Transceiver 602 may be used to perform S21 and S22 in the embodiment shown in fig. 2, and/or other processes for supporting the techniques described herein.

For example, the uplink control channel resource includes a first uplink control channel resource and a second uplink control channel resource, the first uplink control channel resource and the second uplink control channel resource are located in the same resource block, the first uplink control channel resource is used to transmit first response information corresponding to a first downlink control channel, the second uplink control channel resource is used to transmit second response information corresponding to a second downlink control channel, and a set to which cyclic shifts of candidate sequences included in the first uplink control channel resource belong is { x {₁，x₁+3，x₁+6，x₁+9, the set to which the cyclic shift of the candidate sequence included in the second uplink control channel resource belongs is { x }₂，x₂+3，x₂+6，x₂+9}，x₁And x₂Is not equal to x₁And x₂Are all elements in {0,1,2 }; when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the first uplink control channel resource is x₁，x₁+3，x₁+6，x₁+9, when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are x respectively₁、x₁+6, or is x₁+3、x₁+ 9; when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the second uplink control channel resource is x₂，x₂+3，x₂+6，x₂+9, when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are x respectively₂、x₂+6, or is x₂+3、x₂+9；

A processor 601, configured to determine to allocate a first uplink control channel resource to a terminal device, and generate a first downlink control channel;

a transceiver 602, configured to send the first downlink control channel, and receive the first acknowledgement information sent by the terminal device through the first uplink control channel resource.

All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

Fig. 7 shows a schematic structure of an apparatus 700 for transmitting an uplink control channel. The apparatus 700 for transmitting an uplink control channel may implement the functions of the terminal device mentioned above. The apparatus 700 for transmitting an uplink control channel may be the terminal device described above, or may be a chip disposed in the terminal device described above. The apparatus 700 for transmitting an uplink control channel may include a processor 701 and a transceiver 702. Where the processor 701 may be configured to execute S22 in the embodiment shown in fig. 2, and/or other processes for supporting the techniques described herein, for example, the processor 701 may determine that the first downlink control channel received by the transceiver 702 corresponds to the first uplink control channel resource, and the processor 701 may further generate the first acknowledgement information, etc. The transceiver 702 may be used to perform S21 and S22 in the embodiment shown in fig. 2, and/or other processes for supporting the techniques described herein.

For example, the uplink control channel resource includes a first uplink control channel resource and a second uplink control channel resource, the first uplink control channel resource and the second uplink control channel resource are located in the same resource block, the first uplink control channel resource is used to transmit first response information corresponding to a first downlink control channel, the second uplink control channel resource is used to transmit second response information corresponding to a second downlink control channel, and a set to which cyclic shifts of candidate sequences included in the first uplink control channel resource belong is { x {₁，x₁+3，x₁+6，x₁+9, the set to which the cyclic shift of the candidate sequence included in the second uplink control channel resource belongs is { x }₂，x₂+3，x₂+6，x₂+9}，x₁And x₂Is not equal to x₁And x₂Are all elements in {0,1,2 }; when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the first uplink control channel resource is x₁，x₁+3，x₁+6，x₁+9, when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are x respectively₁、x₁+6, or is x₁+3、x₁+ 9; when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the second uplink control channel resource is x₂，x₂+3，x₂+6，x₂+9, when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are x respectively₂、x₂+6, or is x₂+3、x₂+ 9; a transceiver 702 for receiving the first downlink control channel from a network device; a processor 701, configured to determine, according to the first downlink control channel, that an uplink control channel resource used for sending the first acknowledgement information is the first uplink control channel resource; the transceiver 702 is further configured to send the first acknowledgement information to the network device through the first uplink control channel resource.

In a simple embodiment, it will be appreciated by those skilled in the art that the apparatus 600 for receiving the uplink control channel or the apparatus 700 for transmitting the uplink control channel can also be implemented by the structure of the communication apparatus 800 as shown in fig. 8A. The communication apparatus 800 may implement the functions of the network device or the terminal device referred to above. The communication device 800 may include a processor 801. Where the communications apparatus 800 is used to implement the functionality of a network device in the embodiment shown in fig. 2, the processor 801 may be configured to perform S21 and S22 in the embodiment shown in fig. 2, S41 and S42 in the embodiment shown in fig. 4, and/or other processes for supporting the techniques described herein. The processor 601 executes S22, and is mainly configured to determine uplink control channel resources allocated to the terminal device, thereby generating a downlink control channel. When the communication apparatus 800 is used to implement the functions of the terminal device in the embodiment shown in fig. 2, the processor 801 may be configured to execute S22 in the embodiment shown in fig. 2, and/or other processes for supporting the techniques described herein, for example, the processor 801 may determine that the received first downlink control channel corresponds to the first uplink control channel resource, and the processor 801 may further generate the first acknowledgement information, etc. The processor 801 executes S21, and mainly the processor 801 may determine N PUCCH resource pools configured for the terminal device by the network device.

The communication device 800 may be implemented by a field-programmable gate array (FPGA), an application-specific integrated circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Micro Controller Unit (MCU), or a programmable controller (PLD) or other integrated chips, and the communication device 800 may be disposed in the network device or the terminal device according to the embodiment of the present application, so that the network device or the terminal device can implement the signal transmitting and receiving method according to the embodiment of the present application.

In an alternative implementation, the communication device 800 may further include a memory 802, see fig. 8B, wherein the memory 802 is used for storing computer programs or instructions, and the processor 801 is used for decoding and executing the computer programs or instructions. It will be appreciated that these computer programs or instructions may comprise the functional programs of the network devices or terminal devices described above. When the functional program of the network device is decoded and executed by the processor 801, the network device may implement the functions of the network device in the method for transmitting and receiving the uplink control channel according to the embodiment of the present application. When the functional program of the terminal device is decoded and executed by the processor 801, the terminal device may implement the functions of the terminal device in the method for transmitting and receiving the uplink control channel according to the embodiment of the present application.

In an alternative implementation, the functional programs of these network devices or terminal devices are stored in a memory external to the communication apparatus 800. When the functional program of the network device is decoded and executed by the processor 801, part or all of the content of the functional program of the network device is temporarily stored in the memory 802. When the functional program of the terminal device is decoded and executed by the processor 801, part or all of the contents of the functional program of the terminal device are temporarily stored in the memory 802.

In an alternative implementation, the functional programs of these network devices or terminal devices are provided in the memory 802 stored inside the communication apparatus 800. When the memory 802 inside the communication apparatus 800 stores the function program of the network device, the communication apparatus 800 may be provided in the network device according to the embodiment of the present application. When the memory 802 inside the communication apparatus 800 stores the function program of the terminal device, the communication apparatus 800 may be provided in the terminal device of the embodiment of the present application.

In yet another alternative implementation, some of the contents of the functional programs of these network devices are stored in a memory external to the communication apparatus 800, and other parts of the contents of the functional programs of these network devices are stored in a memory 802 internal to the communication apparatus 800. Alternatively, part of the contents of the function programs of these terminal devices are stored in a memory external to communication apparatus 800, and the other part of the contents of the function programs of these terminal devices are stored in memory 802 inside communication apparatus 800.

In the embodiment of the present application, the apparatus 600 for receiving an uplink control channel, the apparatus 700 for transmitting an uplink control channel, and the communication apparatus 800 are presented in a form of dividing each functional module according to each function, or may be presented in a form of dividing each functional module in an integrated manner. As used herein, a "module" may refer to an ASIC, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other components that provide the described functionality.

In addition, the apparatus 600 for receiving an uplink control channel provided in the embodiment shown in fig. 6 may also be implemented in other forms. For example, the apparatus 600 for receiving an uplink control channel includes a processing module and a transceiver module. For example, the processing module may be implemented by the processor 601 and the transceiver module may be implemented by the transceiver 602. Among other things, the processing module may be used to perform S21 and S22 in the embodiment shown in FIG. 2, S41 and S42 in the embodiment shown in FIG. 4, and/or other processes for supporting the techniques described herein. The processing module executes S22, and is mainly configured to determine uplink control channel resources allocated to the terminal device, so as to generate a downlink control channel. The transceiver module may be used to perform S21 and S22 in the embodiment shown in fig. 2, and/or other processes for supporting the techniques described herein.

The processing module is used for determining that a first uplink control channel resource is allocated to the terminal equipment and generating a first downlink control channel;

and the transceiver module is configured to send the first downlink control channel, and receive the first acknowledgement information sent by the terminal device through the first uplink control channel resource.

The apparatus 700 for transmitting an uplink control channel provided in the embodiment shown in fig. 7 may also be implemented in other forms. For example, the apparatus 700 for transmitting an uplink control channel includes a processing module and a transceiver module. For example, the processing module may be implemented by the processor 701, and the transceiver module may be implemented by the transceiver 702. For example, the processing module may determine that the first downlink control channel received by the transceiver module corresponds to the first uplink control channel resource, and may also generate the first acknowledgement information, and the like. The transceiver module may be used to perform S21 and S22 in the embodiment shown in fig. 2, and/or other processes for supporting the techniques described herein.

For example, the uplink control channel resource includes a first uplink control channel resource and a second uplink control channel resource, the first uplink control channel resource and the second uplink control channel resource are located in the same resource block, the first uplink control channel resource is used to transmit first response information corresponding to a first downlink control channel, the second uplink control channel resource is used to transmit second response information corresponding to a second downlink control channel, and a set to which cyclic shifts of candidate sequences included in the first uplink control channel resource belong is { x {₁，x₁+3，x₁+6，x₁+9, the set to which the cyclic shift of the candidate sequence included in the second uplink control channel resource belongs is { x }₂，x₂+3，x₂+6，x₂+9}，x₁And x₂Is not equal to x₁And x₂Are all elements in {0,1,2 }; when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the first uplink control channel resource is x₁，x₁+3，x₁+6，x₁+9, when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are x respectively₁、x₁+6, or is x₁+3、x₁+ 9; when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 2 bits, the second uplink control channel resource is configured to perform uplink control on the second downlink control channel resourceThe cyclic shift of 4 candidate sequences included in the channel-making resource is x₂，x₂+3，x₂+6，x₂+9, when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are x respectively₂、x₂+6, or is x₂+3、x₂+ 9; a transceiver module, configured to receive the first downlink control channel from a network device; a processing module, configured to determine, according to the first downlink control channel, that an uplink control channel resource used for sending the first acknowledgement information is the first uplink control channel resource; the transceiver module is further configured to send the first acknowledgement information to the network device through the first uplink control channel resource.

Since the apparatus 600 for receiving an uplink control channel, the apparatus 700 for sending an uplink control channel, and the communication apparatus 800 provided in the embodiment of the present application can be used to execute the methods provided in the embodiment shown in fig. 2 or the embodiment shown in fig. 4, the technical effects obtained by the embodiments can refer to the above method embodiments, and are not described herein again.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, 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. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. 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, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (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, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Versatile Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims

1. A method for receiving an uplink control channel, wherein the uplink control channel resource comprises a first uplink control channel resource and a second uplink control channel resource, and the first uplink control channel resource and the second uplink control channel resourceSecond uplink control channel resources are located in the same resource block, the first uplink control channel resources are used for transmitting first response information corresponding to a first downlink control channel, the second uplink control channel resources are used for transmitting second response information corresponding to a second downlink control channel, and a set to which cyclic shift of candidate sequences included in the first uplink control channel resources belongs is { x }₁，x₁+3，x₁+6，x₁+9, the set to which the cyclic shift of the candidate sequence included in the second uplink control channel resource belongs is { x }₂，x₂+3，x₂+6，x₂+9}，x₁And x₂Is not equal to x₁And x₂Are all elements in {0,1,2 }; when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the first uplink control channel resource is x₁、x₁+3、x₁+6、x₁+9, when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are x respectively₁、x₁+6, or is x₁+3、x₁+ 9; when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the second uplink control channel resource is x₂、x₂+3、x₂+6、x₂+9, when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are x respectively₂、x₂+6, or is x₂+3、x₂+9, wherein when the first acknowledgment information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, and the second acknowledgment information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bitWhen the answer information is 1 bit: the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is an even number, and the cyclic shift of the 2 candidate sequences included in the second uplink control channel resource is an even number, or the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is an odd number, and the cyclic shift of the 2 candidate sequences included in the second uplink control channel resource is an odd number;

the network equipment sends the first downlink control channel;

and the network equipment receives the first response information sent by the terminal equipment through the first uplink control channel resource.

2. The method of claim 1, wherein the candidate sequence is generated according to the following formula:

wherein R is the length of the candidate sequence, R is a positive integer, { x_iI 0,1,2, R-1 is a root sequence, m_sIs the candidate sequence y_s,iCyclic shift of (d), m_sIs an integer, s is an index representing a different sequence, and j is a unit of an imaginary number.

3. The method of claim 1, wherein the method further comprises:

when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, and the second acknowledgement information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, the network device sends a first notification message to the terminal device, where the first notification message is used to indicate that cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are even numbers, and cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are even numbers, or is used to indicate that cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are odd numbers, and cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are odd numbers.

4. The method according to any of claims 1-3, wherein the resource block further includes a third uplink control channel resource, the third uplink control channel resource is used for transmitting third acknowledgement information corresponding to a third downlink control channel, and the set to which the cyclic shift of the candidate sequence included in the third uplink control channel resource belongs is { x }₃，x₃+3，x₃+6，x₃+9}，x₁、x₂、x₃Are all not equal, and x₃Is an element in {0,1,2 }.

5. The method of claim 4, wherein the method further comprises:

and the network device sends a second notification message to the terminal device, where the second notification message is used to indicate that the resource block includes the first uplink control channel resource and the second uplink control channel resource, or to indicate that the resource block includes the first uplink control channel resource, the second uplink control channel resource and the third uplink control channel resource.

6. The method of claim 4,

when the first response information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, and the third response information corresponding to the third downlink control channel transmitted by the third uplink control channel resource is 1 bit: the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is an even number, the cyclic shift of the 2 candidate sequences included in the second uplink control channel resource is an even number, and the cyclic shift of the 2 candidate sequences included in the third uplink control channel resource is an even number, or the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is an odd number, the cyclic shift of the 2 candidate sequences included in the second uplink control channel resource is an odd number, and the cyclic shift of the 2 candidate sequences included in the third uplink control channel resource is an odd number.

7. The method of any of claims 1-3,

when the first acknowledgement information is 1 bit, and the terminal device transmits the first acknowledgement information and the scheduling request through the first uplink control channel resource, the first uplink control channel resource includes 4 candidate sequences.

8. A method for sending an uplink control channel is characterized in that the uplink control channel resource includes a first uplink control channel resource and a second uplink control channel resource, the first uplink control channel resource and the second uplink control channel resource are located in the same resource block, the first uplink control channel resource is used for transmitting first response information corresponding to a first downlink control channel, the second uplink control channel resource is used for transmitting second response information corresponding to a second downlink control channel, and a set to which cyclic shift of a candidate sequence included in the first uplink control channel resource belongs is { x }₁，x₁+3，x₁+6，x₁+9, the set to which the cyclic shift of the candidate sequence included in the second uplink control channel resource belongs is { x }₂，x₂+3，x₂+6，x₂+9}，x₁And x₂Is not equal to x₁And x₂Are all elements in {0,1,2 }; when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the first uplink control channel resource is x₁、x₁+3、x₁+6、x₁+9, the first downlink control when the first uplink control channel resource is transmittedWhen the first response information corresponding to the control channel is 1 bit, the cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are x respectively₁、x₁+6, or is x₁+3、x₁+ 9; when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the second uplink control channel resource is x₂、x₂+3、x₂+6、x₂+9, when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are x respectively₂、x₂+6, or is x₂+3、x₂+9, wherein when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, and the second acknowledgement information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit: the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is an even number, and the cyclic shift of the 2 candidate sequences included in the second uplink control channel resource is an even number, or the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is an odd number, and the cyclic shift of the 2 candidate sequences included in the second uplink control channel resource is an odd number;

the terminal equipment receives the first downlink control channel from the network equipment;

and the terminal equipment sends the first response information to the network equipment through the first uplink control channel resource.

9. The method of claim 8, wherein the candidate sequence is generated according to the following formula:

10. The method of claim 8, wherein the method further comprises:

when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, and the second acknowledgement information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, the terminal device receives a first notification message sent by the network device, where the first notification message is used to indicate that cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are even numbers, and cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are even numbers, or is used to indicate that cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are odd numbers, and cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are odd numbers.

11. The method of any one of claims 8-10,

the resource block further includes a third uplink control channel resource, where the third uplink control channel resource is used to transmit third response information corresponding to a third downlink control channel, and a set to which cyclic shift of a candidate sequence included in the third uplink control channel resource belongs is { x }₃，x₃+3，x₃+6，x₃+9}，x₁、x₂、x₃Are all not equal, and x₃Is an element in {0,1,2 }.

12. The method of claim 11, wherein the method further comprises:

and the terminal device receives a second notification message from the network device, where the second notification message is used to indicate that the resource block includes the first uplink control channel resource and the second uplink control channel resource, or is used to indicate that the resource block includes the first uplink control channel resource, the second uplink control channel resource and the third uplink control channel resource.

13. The method of claim 11,

14. The method of any one of claims 8-10,

15. An apparatus for receiving an uplink control channel, wherein the uplink control channel resources comprise a first uplink control channel resource and a second uplink control channel resourceThe first uplink control channel resource and the second uplink control channel resource are located in the same resource block, the first uplink control channel resource is used for transmitting first response information corresponding to a first downlink control channel, the second uplink control channel resource is used for transmitting second response information corresponding to a second downlink control channel, and a set to which cyclic shifts of candidate sequences included in the first uplink control channel resource belong is { x }₁，x₁+3，x₁+6，x₁+9, the set to which the cyclic shift of the candidate sequence included in the second uplink control channel resource belongs is { x }₂，x₂+3，x₂+6，x₂+9}，x₁And x₂Is not equal to x₁And x₂Are all elements in {0,1,2 }; when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the first uplink control channel resource is x₁、x₁+3、x₁+6、x₁+9, when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are x respectively₁、x₁+6, or is x₁+3、x₁+ 9; when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the second uplink control channel resource is x₂、x₂+3、x₂+6、x₂+9, when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are x respectively₂、x₂+6, or is x₂+3、x₂+9, wherein when the first acknowledgment information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, and the second uplink control channel resource is transmittedWhen the second response information corresponding to the second downlink control channel is 1 bit: the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is an even number, and the cyclic shift of the 2 candidate sequences included in the second uplink control channel resource is an even number, or the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is an odd number, and the cyclic shift of the 2 candidate sequences included in the second uplink control channel resource is an odd number; the device comprises:

a processor, configured to determine to allocate the first uplink control channel resource to a terminal device, and generate the first downlink control channel;

and the transceiver is used for sending the first downlink control channel and receiving the first response information sent by the terminal equipment through the first uplink control channel resource.

16. The apparatus of claim 15, wherein the candidate sequence is generated according to the following equation:

17. The apparatus of claim 15, wherein the transceiver is further configured to:

when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, and the second acknowledgement information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, sending a first notification message to the terminal device, where the first notification message is used to indicate that cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are even numbers, and cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are even numbers, or is used to indicate that cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are odd numbers, and cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are odd numbers.

18. The apparatus according to any of claims 15-17, wherein the resource block further includes a third uplink control channel resource, the third uplink control channel resource is used for transmitting third acknowledgement information corresponding to a third downlink control channel, and a set to which cyclic shifts of candidate sequences included in the third uplink control channel resource belong is { x }₃，x₃+3，x₃+6，x₃+9}，x₁、x₂、x₃Are all not equal, and x₃Is an element in {0,1,2 }.

19. The apparatus of claim 18, wherein the transceiver is further configured to:

and sending a second notification message to the terminal device, where the second notification message is used to indicate that the resource block includes the first uplink control channel resource and the second uplink control channel resource, or is used to indicate that the resource block includes the first uplink control channel resource, the second uplink control channel resource and the third uplink control channel resource.

20. The apparatus of claim 18,

21. The apparatus of any of claims 15-17,

22. A device for sending an uplink control channel is characterized in that the uplink control channel resources include a first uplink control channel resource and a second uplink control channel resource, the first uplink control channel resource and the second uplink control channel resource are located in the same resource block, the first uplink control channel resource is used for transmitting first response information corresponding to a first downlink control channel, the second uplink control channel resource is used for transmitting second response information corresponding to a second downlink control channel, and a set to which cyclic shifts of candidate sequences included in the first uplink control channel resource belong is { x }₁，x₁+3，x₁+6，x₁+9, the set to which the cyclic shift of the candidate sequence included in the second uplink control channel resource belongs is { x }₂，x₂+3，x₂+6，x₂+9}，x₁And x₂Is not equal to x₁And x₂Are all elements in {0,1,2 }; when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 2 bits, the first uplink control channel resourceThe cyclic shift of the included 4 candidate sequences is x₁、x₁+3、x₁+6、x₁+9, when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are x respectively₁、x₁+6, or is x₁+3、x₁+ 9; when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 2 bits, the cyclic shift of 4 candidate sequences included in the second uplink control channel resource is x₂、x₂+3、x₂+6、x₂+9, when the second response information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, the cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are x respectively₂、x₂+6, or is x₂+3、x₂+9, wherein when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, and the second acknowledgement information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit: the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is an even number, and the cyclic shift of the 2 candidate sequences included in the second uplink control channel resource is an even number, or the cyclic shift of the 2 candidate sequences included in the first uplink control channel resource is an odd number, and the cyclic shift of the 2 candidate sequences included in the second uplink control channel resource is an odd number; the device comprises:

a transceiver for receiving the first downlink control channel from a network device;

a processor, configured to determine, according to the first downlink control channel, the first uplink control channel resource for transmitting the first acknowledgement information;

the transceiver is further configured to send the first acknowledgement information to the network device through the first uplink control channel resource.

23. The apparatus of claim 22, wherein the candidate sequence is generated according to the following equation:

24. The apparatus of claim 22, wherein the transceiver is further configured to:

when the first acknowledgement information corresponding to the first downlink control channel transmitted by the first uplink control channel resource is 1 bit, and the second acknowledgement information corresponding to the second downlink control channel transmitted by the second uplink control channel resource is 1 bit, receiving a first notification message sent by the network device, where the first notification message is used to indicate that cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are even numbers, and cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are even numbers, or is used to indicate that cyclic shifts of 2 candidate sequences included in the first uplink control channel resource are odd numbers, and cyclic shifts of 2 candidate sequences included in the second uplink control channel resource are odd numbers.

25. The apparatus of any of claims 22-24,

26. The apparatus of claim 25, wherein the transceiver is further configured to:

receiving a second notification message from the network device, where the second notification message is used to indicate that the resource block includes the first uplink control channel resource and the second uplink control channel resource, or is used to indicate that the resource block includes the first uplink control channel resource, the second uplink control channel resource, and the third uplink control channel resource.

27. The apparatus of claim 25,

28. The apparatus of any of claims 22-24,

when the first acknowledgement information is 1 bit, and the device transmits the first acknowledgement information and the scheduling request through the first uplink control channel resource, the first uplink control channel resource includes 4 candidate sequences.

29. A computer-readable storage medium storing computer instructions for causing a computer to perform the method of any one of claims 1 to 14 when the computer program is run on the computer.