CN108811122B - Control information transmission method and network equipment - Google Patents

Control information transmission method and network equipment Download PDF

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CN108811122B
CN108811122B CN201710313975.3A CN201710313975A CN108811122B CN 108811122 B CN108811122 B CN 108811122B CN 201710313975 A CN201710313975 A CN 201710313975A CN 108811122 B CN108811122 B CN 108811122B
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control channel
time
network device
frequency resource
indication information
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CN108811122A (en
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刘建琴
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Abstract

The application provides a control information transmission method and network equipment. The method comprises the following steps: the first network equipment determines the time-frequency resource of a second control channel according to the initial time-frequency resource of the first control channel and the offset of the time-frequency resource of the second control channel, wherein the offset is configured by the second network equipment; and the first network equipment sends the control information to the second network equipment on the time-frequency resource of the second control channel. By configuring the offset of the time-frequency resource of the second control channel to the first network device, the first network device determines the time-frequency resource of the second control channel according to the offset and the initial time-frequency resource of the first control channel, and can reduce or avoid the conflict of the second control channel resource.

Description

Control information transmission method and network equipment
Technical Field
The present application relates to the field of communications, and more particularly, to a transmission method of control information and a network device.
Background
In order to overcome the problem of possible interruption in the signal transmission process and the like in a high-frequency scene of a New Radio (NR) system, an uplink multi-beam transmission mechanism is adopted, and a user can transmit the same uplink control information by adopting a plurality of different transmitting beams so as to resist fading in the signal transmission process and improve the reliability of uplink signal transmission. The uplink signals corresponding to different transmission beams are transmitted on a plurality of different Orthogonal Frequency Division Multiplexing (OFDM) symbols, for example, the uplink signal corresponding to beam 1 is transmitted on OFDM symbol 1, the uplink signal corresponding to beam 2 is transmitted on OFDM symbol 2, and so on. The transmission of the same uplink control information by using multiple uplink beams occupies multiple control channel resources, thereby reducing transmission efficiency, so that the base station can determine the channel quality condition of the current link based on the measurement and detection of the uplink signals transmitted by the user. For example, based on the measurement of Sounding Reference Signal (SRS) and the like, when the base station finds that the channel quality of the current link is seriously degraded, such as to a certain extent, the base station may trigger the user to transmit uplink signals of multiple beams. The uplink signal here includes uplink control information, uplink reference signal, uplink data information, and the like.
In addition, NR also supports a dynamically variable Hybrid Automatic Repeat Request (HARQ) feedback timing, that is, feedback time n + K of Negative-acknowledgement (NACK)/Acknowledgement (ACK) for downlink data transmission at time n is dynamically variable, where K may take any value of {0,1,2,3, …, K-1, K } and K is a maximum value of HARQ feedback delay supported by NR.
For example, for Frequency Division Duplexing (FDD): in dynamic scheduling, an index (index) of a Physical Uplink Control Channel (PUCCH) is determined by an index of a first Control Channel Element (CCE) (i.e., a starting CCE) of a Physical Downlink Control Channel (PDCCH) for scheduling a corresponding Physical Downlink Shared Channel (PDSCH), that is:
Figure GDA0003068368940000011
wherein
Figure GDA0003068368940000012
Index, n indicating PUCCH for transmitting uplink ACK/NAKPDCCHIndex indicating the starting CCE of PDCCH. In the absence of semi-persistent or persistent scheduling, Δ ═ 0; when persistent scheduling exists in the system, Δ represents the PUCCH resource reserved for the persistently scheduled ACK/NAK.
If the existing scheme is adopted to determine the PDCCH resource, under the condition that the HARQ time sequence is dynamically variable, the downlink scheduling data time corresponding to the PUCCH resource at the ith time can be i-k, wherein k is any non-negative integer value. Since PUCCH resource allocation on one uplink subframe corresponds to an uncertain plurality of possible downlink scheduling subframes, there may be a collision when PUCCH resources are determined according to equation (1) above.
In addition, when uplink control information is transmitted in a multi-time round-robin manner using a plurality of beams, PUCCH resources at a plurality of times corresponding to different beams are usedCorrespond to the same nPDCCHThe uplink control information transmitted by multiple beams in a multi-time round-robin manner corresponds to the same PDSCH scheduling data. So there may also be a collision when determining PUCCH resources according to equation (1) above.
Disclosure of Invention
The application provides a transmission method of control information and network equipment, which can reduce or avoid conflict of PUCCH resources.
In a first aspect, a method for transmitting control information is provided, where the method includes:
the first network equipment determines the time-frequency resource of a second control channel according to the initial time-frequency resource of the first control channel and the offset of the time-frequency resource of the second control channel, wherein the offset is configured by the second network equipment;
and the first network equipment sends control information to the second network equipment on the time-frequency resource of the second control channel.
In the embodiment of the invention, the offset of the time-frequency resource of the second control channel is configured to the first network equipment, so that the first network equipment determines the time-frequency resource of the second control channel according to the offset and the initial time-frequency resource of the first control channel, and the conflict of the second control channel resource can be reduced or avoided under the condition that the time sequence of the HARQ is dynamically variable and the control information is sent for multiple times.
In some possible implementations, before the first network device determines, according to the starting time-frequency resource of the first control channel and the offset, the time-frequency resource of the second control channel, the method further includes:
and the first network equipment receives first indication information sent by the second network equipment, wherein the first indication information is used for indicating the offset.
In some possible implementations, before the first network device receives the first indication information sent by the second network device, the method further includes:
the first network device receives second indication information sent by the second network device, wherein the second indication information is used for indicating the bit number of the first indication information;
the first indication information includes an index of the offset in an offset set corresponding to the bit number.
In an actual system, when the channel quality of a second control channel from a first network device to a second network device is seriously degraded, the second network device triggers the first network device to repeatedly send control information for multiple times, so that the problem of resource collision caused by repeatedly sending control information for multiple times is abnormal and has great randomness. In this case, if the number of indicated bits of the offset of the second control channel (e.g., PUCCH) resource collision is always reserved for this case, a bit waste problem will occur.
In the embodiment of the invention, the bit number of the offset used for avoiding the resource conflict is indicated to the first network equipment, so that the bit waste problem of the resource conflict indication of the second control channel can be avoided under the scene that only the time sequence of the HARQ is dynamically variable.
In some possible implementations, before the first network device receives the first indication information sent by the second network device, the method further includes:
the first network device receives third indication information sent by the second network device, wherein the third indication information is used for indicating an offset set in which the offset is located;
the first indication information includes an index of the offset in the set of offsets.
In the embodiment of the invention, the second network equipment indicates the offset set where the offset used for avoiding resource conflict is located and indicates the index of the offset in the offset set to the first network equipment, and because the set where the offset is located and the index of the offset in the offset set can be indicated by using fewer bits, the bit waste problem of the resource conflict indication of the second control channel can be avoided under the scene that only HARQ (hybrid automatic repeat request) timing sequence is dynamically variable.
In some possible implementations, the index of the start time-frequency resource of the first control channel, the offset, and the index of the time-frequency resource of the second control channel satisfy the following relation:
nPUCCH＝nPDCCH+Δ+offset
wherein n isPUCCHAn index, n, representing the time-frequency resources of the second control channelPDCCHAnd the offset represents the offset, and delta represents a preset offset.
In some possible implementations, the method further includes:
the first network device receives fourth indication information sent by the second network device, where the fourth indication information is used to indicate a beam number M for sending the control information or a number M of times of repeatedly sending the control information, and M is an integer greater than or equal to 1;
the sending, by the first network device, control information to the second network device on the time-frequency resource of the second control channel includes:
and the first network equipment sends the control information on the time-frequency resource of the second control channel for M times according to the fourth indication information.
By transmitting the control information M times, the transmission reliability of the control information can be improved.
Optionally, the sending the control information M times on the time-frequency resource of the second control channel includes:
sending the control information on the time-frequency resource of the second control channel for M times by adopting M wave beams; alternatively, the first and second electrodes may be,
and repeatedly sending the control information for M times on the time-frequency resource of the second control channel by using the same wave beam.
In some possible implementations, the offset includes M offsets, and the M offsets correspond to the M beams one to one, or the M offsets correspond to the control information that is repeatedly transmitted M times one to one.
In a second aspect, a method for transmitting control information is provided, the method including:
the second network equipment sends first indication information, wherein the first indication information is used for indicating the offset of the time-frequency resource of the second control channel;
and the second network equipment receives the control information sent by the first network equipment on the time-frequency resource of a second control channel, wherein the time-frequency resource of the second control channel is determined according to the starting time-frequency resource of the first control channel and the offset.
In the embodiment of the invention, the time-frequency resource of the second control channel is determined according to the configured offset and the initial time-frequency resource of the first control channel, so that the conflict of the second control channel resource can be reduced or avoided under the condition that the time sequence of the HARQ is dynamically variable and the control information is sent for multiple times.
In some possible implementations, before the second network device sends the first indication information, the method further includes:
the second network equipment sends second indication information, wherein the second indication information is used for indicating the bit number of the first indication information;
the first indication information includes an index of the offset in an offset set corresponding to the bit number.
In the embodiment of the invention, the bit number of the offset used for avoiding the resource conflict is indicated to the first network equipment, so that the bit waste problem indicated by PUCCH resource conflict can be avoided in the scene that only the HARQ time sequence is dynamically variable.
In some possible implementations, before the second network device sends the first indication information, the method further includes:
the second network equipment sends third indication information, wherein the third indication information is used for indicating the offset set in which the offset is located;
the first indication information includes an index of the offset in the set of offsets.
In the embodiment of the present invention, the second network device indicates, to the first network device, the offset set in which the offset for avoiding the resource collision is located, and indicates the index of the offset in the offset set, and since fewer bits may be used to indicate the set in which the offset is located and the index of the offset in the offset set, under a scenario where only the HARQ timing is dynamically variable, the bit waste problem of the resource collision indication of the second control channel is favorably avoided.
In some possible implementations, the index of the start time-frequency resource of the first control channel, the offset, and the index of the time-frequency resource of the second control channel satisfy the following relation:
nPUCCH＝nPDCCH+Δ+offset
wherein n isPUCCHAn index, n, representing the time-frequency resources of the second control channelPDCCHAnd the offset represents the offset, and delta represents a preset offset.
In some possible implementations, the method further includes:
the second network device sends fourth indication information, where the fourth indication information is used to indicate a number M of beams used for sending the control information or a number M of times of repeatedly sending the control information, and M is an integer greater than or equal to 1;
the second network device receives the control information sent by the first network device on the time-frequency resource of a second control channel, and the method includes:
and the second network equipment receives the control information sent by the first network equipment for M times on the time-frequency resource of the second control channel.
This can improve the transmission reliability of the control information.
Optionally, the receiving, by the second network device, the control information sent by the first network device M times on the time-frequency resource of the second control channel includes:
the second network equipment receives the control information sent by the first network equipment by adopting M wave beams for M times on the time-frequency resource of the second control channel; alternatively, the first and second electrodes may be,
and the second network equipment receives the control information which is repeatedly sent by the first network equipment by adopting the same wave beam for M times on the time-frequency resource of the second control channel.
In some possible implementations, the offset includes M offsets, and the M offsets correspond to the M beams one to one, or the M offsets correspond to the control information repeatedly transmitted M times one to one.
In a third aspect, a method for transmitting control information is provided, where the method includes:
the method comprises the steps that a first network device determines time-frequency resources of a second control channel according to a hybrid automatic repeat request (HARQ) time sequence and starting time-frequency resources of a first control channel, wherein the HARQ time sequence represents a time interval of the second control channel relative to a shared channel scheduled by the first control channel on a time domain;
and the first network equipment sends control information to second network equipment on the time-frequency resource of the second control channel.
In the embodiment of the invention, the time-frequency resource of the second control channel is determined according to the time sequence of the HARQ and the initial time-frequency resource of the first control channel, so that the conflict of the second control channel resource can be reduced or avoided under the condition that the HARQ time sequence is dynamically variable and the control information is sent for multiple times.
In some possible implementations, the candidate resource set of the second control channel includes a plurality of resource groups orthogonal to each other, and the time-frequency resource of the second control channel is located in one of the resource groups;
the first network device determines the time frequency resource of the second control channel according to the time sequence of the HARQ and the starting time frequency resource of the first control channel, and the determining includes:
and the first network equipment determines a resource group where the time-frequency resource of the second control channel is located according to the time sequence of the HARQ, and determines the position of the time-frequency resource of the second control channel in the resource group according to the initial time-frequency resource of the first control channel.
In some possible implementations, the timing of the HARQ, the index of the starting time-frequency resource of the first control channel, and the index of the time-frequency resource of the second control channel satisfy the following relation:
Figure GDA0003068368940000051
wherein n isPUCCHAn index representing time-frequency resources of the second control channel, k represents a timing of the HARQ, ncceThe index of the starting time-frequency resource of the first control channel is represented, N represents the number of candidate resources in the candidate resource set of the second control channel, and K represents the number of mutually orthogonal resource groups in the candidate resource set of the second control channel.
In some possible implementations, the timing of the HARQ, the index of the starting time-frequency resource of the first control channel, and the index of the time-frequency resource of the second control channel satisfy the following relation:
Figure GDA0003068368940000052
wherein n isPUCCHAn index representing time-frequency resources of the second control channel, k represents a timing of the HARQ, ncceAn index representing a start time-frequency resource of the first control channel, N representing a number of candidate resources in the candidate resource set of the second control channel, K representing a number of mutually orthogonal resource groups in the candidate resource set of the second control channel, and offset1 and offset2 being offsets configured by the second network device.
In some possible implementations, the method further includes:
the first network device receives indication information sent by the second network device, where the indication information is used to indicate a number M of beams used for sending the control information or a number M of times of repeatedly sending the control information, and M is an integer greater than or equal to 1;
the sending, by the first network device, control information to the second network device on the time-frequency resource includes:
and the first network equipment sends the control information to the second network equipment for M times on the time-frequency resource of the second control channel according to the indication information.
By transmitting the control information to the second network device a plurality of times, the transmission reliability of the control information can be improved.
Optionally, the sending the control information M times on the time-frequency resource of the second control channel includes:
sending the control information on the time-frequency resource of the second control channel for M times by adopting M wave beams; alternatively, the first and second electrodes may be,
and repeatedly sending the control information for M times on the time-frequency resource of the second control channel by using the same wave beam.
In a fourth aspect, a method for transmitting control information is provided, the method including:
the second network equipment determines the time-frequency resource of a second control channel according to the time sequence of hybrid automatic repeat request (HARQ) and the starting time-frequency resource of a first control channel, wherein the HARQ time sequence represents the time interval of the second control channel relative to a shared channel scheduled by the first control channel on the time domain;
and the second network equipment receives the control information sent by the first network equipment on the time-frequency resource of the second control channel.
In the embodiment of the invention, the time-frequency resource of the second control channel is determined according to the time sequence of the HARQ and the initial time-frequency resource of the first control channel, so that the conflict of the second control channel resource can be reduced or avoided under the condition that the HARQ time sequence is dynamically variable and the control information is sent for multiple times.
In some possible implementations, the candidate resource set of the second control channel includes a plurality of resource groups orthogonal to each other, and the time-frequency resource of the second control channel is located in one of the resource groups;
and the resource group in which the time-frequency resource of the second control channel is positioned is determined according to the time sequence of the HARQ, and the position of the time-frequency resource of the second control channel in the resource group is determined according to the initial time-frequency resource of the first control channel.
In some possible implementations, the timing of the HARQ, the index of the starting time-frequency resource of the first control channel, and the index of the time-frequency resource of the second control channel satisfy the following relation:
Figure GDA0003068368940000061
wherein n isPUCCHAn index representing time-frequency resources of the second control channel, k represents a timing of the HARQ, ncceThe index of the starting time-frequency resource of the first control channel is represented, N represents the number of candidate resources in the candidate resource set of the second control channel, and K represents the number of mutually orthogonal resource groups in the candidate resource set of the second control channel.
In some possible implementations, the timing of the HARQ, the index of the starting time-frequency resource of the first control channel, and the index of the time-frequency resource of the second control channel satisfy the following relation:
Figure GDA0003068368940000062
wherein n isPUCCHAn index representing time-frequency resources of the second control channel, k represents a timing of the HARQ, ncceAn index representing a start time-frequency resource of the first control channel, N representing a number of candidate resources in the candidate resource set of the second control channel, K representing a number of mutually orthogonal resource groups in the candidate resource set of the second control channel, and offset1 and offset2 being offsets configured by the second network device.
In some possible implementations, the method further includes:
the second network equipment sends indication information, wherein the indication information is used for indicating the number M of beams used for sending the control information or the number M of times of repeatedly sending the control information, and M is an integer greater than or equal to 1;
the second network device receives the control information sent by the first network device on the time-frequency resource of the second control channel, and the method includes:
and the second network equipment receives the control information sent by the first network equipment for M times on the time-frequency resource of the second control channel.
By transmitting the control information to the second network device a plurality of times, the transmission reliability of the control information can be improved.
Optionally, the receiving, by the second network device, the control information sent by the first network device M times on the time-frequency resource of the second control channel includes:
the second network equipment receives the control information sent by the first network equipment by adopting M wave beams for M times on the time-frequency resource of the second control channel; alternatively, the first and second electrodes may be,
and the second network equipment receives the control information which is repeatedly sent by the first network equipment by adopting the same wave beam for M times on the time-frequency resource of the second control channel.
In a fifth aspect, a network device is provided for executing the method of the first network device, and in particular, the network device may include a module for executing the corresponding steps of the first network device. Such as a processing unit and a transceiver unit, etc.
In a sixth aspect, a network device is provided, which is a method for the second network device, and in particular, the network device may include a module for executing the corresponding steps of the second network device. Such as a processing unit and a transceiver unit, etc.
In a seventh aspect, a network device is provided, which includes a memory for storing a computer program and a processor for calling the computer program from the memory and executing the computer program, so that the network device executes the method of the first network device.
Optionally, the network device may further comprise a transceiver for transceiving signals under the control of the processor.
In an eighth aspect, a network device is provided, which comprises a memory for storing a computer program and a processor for calling and running the computer program from the memory, so that the network device performs the method of the second network device described above.
Optionally, the user equipment may further comprise a transceiver for transceiving signals under the control of the processor.
In a ninth aspect, a computer-readable storage medium is provided, having stored therein instructions, which, when run on a computer, cause the computer to perform the method of the above aspects.
In a tenth aspect, a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects is provided.
Drawings
Fig. 1 is a schematic flow chart of a transmission method of control information according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a transmission method of control information according to another embodiment of the present invention;
fig. 3 is a schematic flow chart of a transmission method of control information according to another embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a network device according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a network device according to another embodiment of the present invention;
FIG. 6 is a schematic diagram of a network device according to another embodiment of the present invention;
fig. 7 is a schematic structural diagram of a network device according to another embodiment of the present invention.
Detailed Description
The technical solution in the present application will be described below with reference to the accompanying drawings.
In the embodiment of the present invention, a terminal device is a device with a communication function, and may also be referred to as a User Equipment (UE), and may include a handheld device with a wireless communication function, a vehicle-mounted device, a wearable device, a computing device, or other processing devices connected to a wireless modem, and the like. The terminal devices in different networks may be called different names, for example: a terminal, mobile station, subscriber unit, station, cellular telephone, personal digital assistant, wireless modem, wireless communication device, handheld device, laptop computer, cordless telephone, wireless local loop station, or the like. For convenience of description, this application will be referred to as a terminal device.
The network device may be a Base Station (BS), a wireless access device in a cloud network, or a relay station, and the like having a wireless transceiving function. A base station, which may also be referred to as a base station device, is a device deployed in a radio access network to provide wireless communication functions. The names of base stations may be different in different radio access systems, for example, in a Universal Mobile Telecommunications System (UMTS) network, a base station is referred to as a node B (NodeB) and a base station in an LTE network is referred to as an evolved node B (eNB or eNodeB), and in a future 5G System, the base station may be referred to as a Transmission Reception Point (TRP) network node or a G-node B (G-NodeB, gNB).
In the embodiment of the present invention, the symbol "·" represents a multiplication operation. For example, (A.B) represents the multiplication of A and B.
Fig. 1 is a schematic flow chart of a transmission method of control information according to an embodiment of the present invention. As shown in fig. 1, the method 100 includes the following.
110. And the second network equipment sends first indication information to the first network equipment, wherein the first indication information is used for indicating the offset of the time-frequency resources of the second control channel. The first network device receives the first indication information.
Optionally, the time-frequency resource offset of the second control channel refers to: and according to the offset between the starting time frequency resource of the second control channel and the time frequency resource of the second control channel, which is obtained after the starting time frequency resource of the first control channel is offset delta. Where Δ represents the time-frequency resources reserved for ACK/NAK for semi-persistently scheduled or statically scheduled data.
Optionally, the first indication information may be carried in a higher layer signaling or a Media Access Control Element (MAC CE) signaling or a physical layer signaling. The physical layer signaling includes Control signaling, such as Downlink Control Information (DCI) signaling, and the high layer signaling includes Radio Resource Control (RRC) signaling. The first indication information may also use a certain field of the same signaling in combination with other information to achieve the purpose of saving the number of bits, and the following second indication information and third indication information are the same.
It should be noted that the first network device may obtain the offset according to the first indication information sent by the second network device, and the first network device may also obtain the offset in other manners. The offset may also be configurable by other network elements or network devices, for example.
120. And the first network equipment determines the time-frequency resource of the second control channel according to the starting time-frequency resource of the first control channel and the offset.
130. And the first network equipment sends the control information to the second network equipment on the time-frequency resource of the second control channel. The second network device receives the control information.
The control information may be one of: scheduling request, Negative-acknowledgement (NACK)/Acknowledgement (ACK) and Channel State Information (CSI).
Here, the CSI includes at least one of a Channel Quality Indicator (CQI), a Precoding Matrix Indicator (PMI), and a Rank Indicator (RI).
It should be noted that, in different communication systems, the first network device and the second network device may be different devices, which is not limited in this embodiment of the present invention. For example, in a wireless communication system such as LTE or 5G, the first network device may be a terminal device and the second network device may be a base station. Alternatively, in a Device-to-Device (D2D) communication system, both the first network Device and the second network Device may be terminal devices, where the second network Device is a terminal Device with a configuration function.
The first control channel refers to a control channel from the second network device to the first network device, and the second control channel refers to a control channel from the first network device to the second network device. For example, if the first network device is a terminal device and the second network device is a base station, the first control channel is a PDCCH and the second control channel is a PUCCH.
In the embodiment of the invention, the offset of the time-frequency resource of the second control channel is configured to the first network equipment, so that the first network equipment determines the time-frequency resource of the second control channel according to the offset and the initial time-frequency resource of the first control channel, and the conflict of the second control channel resource can be reduced or avoided under the condition that the HARQ time sequence is dynamically variable and control information is sent for multiple times.
Optionally, the second network device may determine an offset of the time-frequency resource of the second control channel according to the current scenario, and generate the first indication information. For example, the offset may be an offset based on an initial time-frequency resource location of the second control channel determined from a starting time-frequency resource of the first control channel. The determining of the initial time-frequency resource position of the second control channel according to the starting time-frequency resource of the first control channel may include: and the time frequency resource position of the second control channel is determined according to the index of the starting time frequency resource of the first control channel, the index of the middle time frequency resource of the first control channel or the index of the ending time frequency resource of the first control channel.
The following description takes the first control channel as PDCCH and the second control channel as PUCCH as an example:
in scenario 1 of dynamically variable HARQ feedback timing, resource collision of PUCCH can be solved by configuring an offset (offset) that is K long, where K may correspond to the maximum possible value of K in HARQ timing.Alternatively, the offset may be any of {0,1, …, K-1 }. Alternatively, the base station may reserve log in DCI2K bits are used to indicate the offset to solve the PUCCH resource collision in the current scenario.
In scenario 2 where multiple beams are used for multi-time round-robin transmission of the PUCCH, the base station may configure any number of round-robin beams N to the user because the number N of round-robin beams is uncertain and theoretically to ensure reliability. In addition, the base station triggers the user to perform multi-beam transmission or repeated transmission of the PUCCH only when the channel quality of the user is degraded to a certain degree, for example, when a beam failure condition is satisfied. To solve the PUCCH resource allocation conflict problem in this scenario, the base station may configure an M-long offset set, where the M-long offset set corresponds to the maximum possible value of the multi-beam number of the PUCCH. It should be noted that, since the value of M may be larger, more bits need to be reserved to indicate the possible value of offset. Alternatively, the base station may reserve log in DCI2The offset is indicated by M bits to solve the PUCCH resource collision in the current scenario.
Alternatively, to solve the PUCCH resource collision in the above two scenarios simultaneously, the base station may define a (K · M) long offset set and correspondingly reserve log in DCI2(K · M) bits to accomplish the adjustments required for resource collision of PUCCH transmissions.
Since most of the time only has the resource conflict problem caused by scenario 1, scenario 2 can be triggered when the channel quality of the second control channel is degraded, such as to a certain extent, so if log is reserved at each transmission time2The (K · M) bits are used to avoid or reduce PUCCH resource collision, which results in wasted bits for PUCCH resource collision indication.
In some embodiments, to avoid the problem of bit waste of PUCCH resource collision indication, the base station may first configure the bit number of the first indication information by using one second indication information. Optionally, before 110, the method 100 may further include: 140. and the second network equipment sends second indication information, wherein the second indication information is used for indicating the bit number of the first indication information. The first network device receives the second indication information. Specifically, the first indication information includes an index of the offset in the offset set corresponding to the bit number.
Alternatively, the second network device may determine the bit number of the first indication information according to different scenarios. Therefore, under different scenes, the bit numbers of the first indication information are different, which is beneficial to reducing or avoiding the waste of bit resources.
Thus, the problem of bit waste caused by indicating the resource offset with a large number of bits to solve the resource collision caused by only scenario 1 can be avoided. It should be understood that the above-described base station configuration bit number manner can also be applied to other scenarios.
The second indication information may be carried in a higher layer signaling or a Media Access Control Element (MAC CE) signaling, and the first indication information may be carried in DCI. The higher layer signaling may be Radio Resource Control (RRC) signaling.
In another embodiment, in order to avoid the bit waste problem of PUCCH resource collision indication, the base station may divide the (K · M) long offset set for solving the resource collision problem of PUCCH in the above two scenarios into a plurality of shorter offset sets, each including a plurality of offsets, and then the base station may indicate the set of offsets employed by the user and the index of the offset in the employed offset set. Because the number of the offset sets and the number of the offsets in each offset set are small, the base station can indicate the offset sets based on the first signaling with unlimited bit number, and reserve fewer second signaling bits to indicate the indexes of the offsets in the offset sets. The second signaling is signaling with a limited number of bits. For example, the base station may also configure, through higher layer signaling, offset sets of time-frequency resources of T (T > ═ 1) second control channels, where each offset set has the same size and is K. And then, dynamically triggering the adopted offset set through the DCI signaling. For example, the set of applied offsets 1 in scene 1 may be {0,1,2, …, K-2, K-1}, while the set of applied offsets 2 in scene 1 and scene 2 may be {0+ s K,1+ s K,2+ s K, …, K-2+ s K, K-1+ s K }, s being any positive integer. The second network device may configure different offset sets for the first network device according to different scenarios, for example, configure offset set1 for the first network device when only the timing of HARQ is dynamically variable, and configure offset set2 for the first network device when the timing of HARQ is dynamically variable and the first network device is triggered to repeatedly send control information for multiple times. Therefore, the problem of bit waste caused by indicating the time-frequency resource offset of the second control channel by more bits when only the resource conflict caused by the scene 1 exists can be avoided.
Optionally, before 110, the method 100 may further include: 150. and the second network equipment sends third indication information, wherein the third indication information is used for indicating the offset set in which the offset is located. The first network device receives the third indication information. Specifically, the first indication information includes an index of the offset in the set of offsets.
The third indication information may be carried in a higher layer signaling or MAC CE, or may be carried in other signaling, which is not limited in this embodiment of the present invention.
Optionally, the second network device may configure T sets of offset amounts for the first network device in advance. Optionally, each of the T offset sets includes the same number of offsets, so that the same number of bits may be used to indicate indexes of different offsets in the offset set where the offset sets are located, which is beneficial to saving bit overhead. Optionally, the base station may configure one offset set of the T offsets to the terminal device through a higher layer signaling, and dynamically indicate an index of one offset in the offset set to the terminal device through DCI signaling. Because the number of the offset in each offset set is smaller, the collision resolution of the time-frequency resource of the second control channel can be completed by using fewer DCI signaling bits.
Optionally, the index of the start time-frequency resource of the first control channel, the offset, and the index of the time-frequency resource of the second control channel satisfy the following relation:
nPUCCH＝nPDCCH+Δ+offset (2)
wherein n isPUCCHIndex, n, representing time-frequency resources of a second control channelPDCCHThe index of the starting time frequency resource of the first control channel is represented, the offset represents the offset, and the delta represents the preset offset.
In some embodiments, Δ represents the time-frequency resources reserved for ACKs/NAKs for semi-persistently scheduled or statically scheduled data.
Optionally, the method 100 may further include: the second network equipment transmits fourth indication information, wherein the fourth indication information is used for indicating the number M of beams used for transmitting the control information or the number M of times of repeatedly transmitting the control information, and M is an integer greater than or equal to 1. Accordingly, the first network device receives the fourth indication information.
Specifically, in 130, the sending, by the first network device, the control information to the second network device through the second control channel on the time-frequency resource of the second control channel includes: and the first network equipment sends the control information for M times on the time-frequency resource of the second control channel according to the fourth indication information. Specifically, the sending the control information M times on the time-frequency resource of the second control channel includes: sending M times of control information on the time frequency resource of a second control channel by adopting M wave beams; or, repeatedly sending the control information M times on the time-frequency resource of the second control channel by using the same beam. Accordingly, the second network device receives the M times of control information transmitted by the first network device. This can improve the transmission reliability of the control information.
Optionally, the offset indicated by the first indication information includes M offset. The M offsets correspond one-to-one to the M beams. The embodiment of the present invention does not limit the specific implementation of the one-to-one correspondence relationship between the M offsets and the M beams, for example, the offsets having the correspondence relationship and the beam sequence are the same, that is, the xth offset in the M offsets corresponds to the xth beam in the M beams, and x is an integer greater than or equal to 1 and less than or equal to M. Alternatively, the offset having the correspondence relationship is the same as the identification of the beam, for example, the offset identified as y among the M offsets corresponds to the beam identified as y among the M beams, and y is an integer greater than or equal to 1 and less than or equal to M.
Or, the M offset amounts correspond to M times of control information repeatedly transmitted one by one. Similarly, the embodiment of the present invention does not limit the specific implementation of the one-to-one correspondence relationship between the M offsets and the M pieces of control information to be transmitted. For example, the offset having the correspondence relationship is the same as the rank of the M times of control information, that is, the xth offset among the M offsets corresponds to the xth transmitted control information, and x is an integer greater than or equal to 1 and less than or equal to M.
The candidate resources for the second control channel may be configured by resource configuration information sent by the second network device. Specifically, the resource configuration information is used to indicate at least one of candidate time domain resources, candidate frequency domain resources, and candidate code domain resources of the second control channel. Wherein the candidate time domain resource of the second control channel may include at least one of a subframe number and an Orthogonal Frequency Division Multiplexing (OFDM) symbol offset occupied by the second control channel in a time domain. The candidate frequency-domain resources of the second control channel may include at least one of a starting position of the frequency-domain resources of the second control channel and a frequency-domain bandwidth occupied by the second control channel. The candidate Code domain resources of the second control channel may include one or more Code words occupied by the second control channel in the Code domain, such as Orthogonal spreading codes (OCCs).
The second network device may send the resource configuration information to the first network device through higher layer signaling and/or physical layer signaling. The index of the time-frequency resource of the second control channel refers to an index of the time-frequency resource of the second control channel in the candidate resource, so that the second control channel can determine the time-frequency resource of the second control channel according to the index and the candidate resource.
Optionally, the second network device may notify the first network device of the resource configuration information through high-layer signaling, and dynamically indicate, through physical layer signaling, an index of a resource of the second control channel used for current control information transmission by the first network device.
Optionally, the resource configuration information may also be used to indicate the number of beams for transmitting control information or the number of times for repeatedly transmitting control information. That is, the number of beams or the number of times of transmitting control information may also be indicated while indicating the candidate resource of the second control channel.
Fig. 2 is a schematic flow chart of a transmission method of control information according to another embodiment of the present invention. As shown in fig. 2, the method includes the following.
210. And the first network equipment determines the time-frequency resource of the second control channel according to the time sequence of the HARQ and the starting time-frequency resource of the first control channel, wherein the time sequence of the HARQ represents the time interval of the second control channel relative to the shared channel scheduled by the first control channel on the time domain.
For example, the shared channel scheduled by the first control channel occupies the xth time unit (e.g., subframe) in the time domain, the second control channel occupies the xth + tth time unit (e.g., subframe) in the time domain, and the HARQ timing is t time units (e.g., subframe).
220. And the first network equipment sends the control information to the second network equipment on the time-frequency resource of the second control channel. The second network device receives the control information.
In the embodiment of the invention, the time-frequency resource of the second control channel is determined according to the time sequence of the HARQ and the initial time-frequency resource of the first control channel, so that the conflict of the second control channel resource can be reduced or avoided.
The control information may be one of: scheduling request, NACK/ACK and CSI.
Wherein the CSI may include at least one of CQI, PMI, and RI.
It should be noted that, in different communication systems, the first network device and the second network device may be different devices, which is not limited in this embodiment of the present invention. For example, in a wireless communication system such as LTE or 5G, the first network device may be a terminal device and the second network device may be a base station. Alternatively, in a Device-to-Device (D2D) communication system, both the first network Device and the second network Device may be terminal devices, where the second network Device is a terminal Device with a configuration function.
The first control channel refers to a control channel of a transmission direction from the second network device to the first network device, and the second control channel refers to a control channel of a transmission direction from the first network device to the second network device. For example, if the first network device is a terminal device and the second network device is a base station, the first control channel is a PDCCH and the second control channel is a PUCCH.
Optionally, the candidate resource set of the second control channel includes a plurality of resource groups orthogonal to each other, and the time-frequency resource of the second control channel is located in one of the resource groups. Specifically, 210 includes: and the first network equipment determines a resource group where the time-frequency resource of the second control channel is located according to the time sequence of the HARQ, and determines the position of the time-frequency resource of the second control channel in the resource group according to the initial time-frequency resource of the first control channel.
The plurality of resource groups orthogonal to each other refer to: the resources in any two of the plurality of resource groups are orthogonal to each other and do not conflict with each other. The candidate resource set of the second control channel may be divided into a plurality of mutually orthogonal resource sets by using a partition manner such as block partition or comb partition, which is not limited in the embodiment of the present invention.
In some embodiments, dividing the candidate resource set of the second control channel into a plurality of resource groups orthogonal to each other by using a block division manner refers to uniformly or non-uniformly dividing the candidate resource set of the second control channel into a plurality of resource groups (or resource blocks), where indexes of the candidate resources of the second control channel in each resource group (or each resource block) are continuous.
For example, assuming that the candidate resource set of the second control channel includes candidate resources with an index of {0,1,2, …, N-2, N-1}, the candidate resource set can be continuously and uniformly divided into a plurality of resource groups or resource blocks as shown below:
first resource group/block: {0,1,2,.., K-1 };
second resource group/block: { K, K +1, K +2,.., 2K-1 };
…
resource group/block s: { (s-1) · K, (s-1) · K +1, (s-1) · K +2,., N-1 };
wherein N, s and K are both integers, and s.K ═ N. That is, the candidate resource set including N candidate resources may also be evenly divided into s resource groups (or resource blocks), where each resource group (or resource block) includes K candidate resources.
Alternatively, assuming that the candidate resource set of the second control channel includes candidate resources with an index of {0,1,2, …, N-2, N-1}, the candidate resource set may be partitioned into a plurality of resource groups or resource blocks as follows in a non-uniform manner:
first resource group/block: {0,1,2,.., K-1 };
second resource group/block: { K, K +1, K +2,.., K + M-1 };
third resource group/block: { K + M, K + M +1, K + M +2, ·, N-1 };
wherein N, K, M and N are integers, and K ≠ M ≠ N. That is, the candidate resource set including N candidate resources may also be non-uniformly divided into three resource groups (or resource blocks), a first resource group/block including K candidate resources, a second resource group/block including M candidate resources, and a third resource group/block including N candidate resources. Here, only three groups are taken as an example for description, and the resource groups may be further divided into a plurality of resource groups or resource blocks of other numbers, which are not described herein again.
In some embodiments, the dividing the candidate resource set of the second control channel into the plurality of resource groups orthogonal to each other by using the comb-shaped dividing manner means that the candidate resource set of the second control channel is continuously divided into a plurality of resource groups (or resource blocks) at equal intervals, where indexes of the candidate resources of the second control channel in each resource group (or resource block) are at equal intervals, and an interval between indexes of any two candidate resources in each resource group (or resource block) is greater than or equal to 2. For example, assuming that the candidate resource set of the second control channel includes candidate resources with indexes {0,1,2, …,2N-2,2N-1}, the candidate resource set can be divided into two resource groups or resource blocks at equal intervals:
first resource group/block: {0,2,4,. 2N-4,2N-2 };
second resource group/block: {1,3,5.. 2N-3,2N-1 };
that is, the candidate resource set including the 2N candidate resources may also be comb-shaped divided into two resource groups (or resource blocks). Here, only the division into two groups is taken as an example for description, and the division may also be divided into a plurality of resource groups or resource blocks of other numbers, which is not described herein again.
In the embodiment of the present invention, the time-frequency resources of the second control channels corresponding to the same HARQ timing sequence may be divided into the same resource group, and then the indexes of the time-frequency resources of different second control channels in the resource group may be distinguished by the starting time-frequency resource of the first control channel corresponding to the second control channel.
Optionally, the HARQ timing, the index of the starting time-frequency resource of the first control channel, and the index of the time-frequency resource of the second control channel satisfy the following relation:
Figure GDA0003068368940000131
wherein n isPUCCHIndex of time-frequency resource of the second control channel, k represents HARQ time sequence, ncceThe index of the starting time frequency resource of the first control channel is represented, N represents the number of candidate resources in the candidate resource set of the second control channel, and K represents the number of mutually orthogonal resource groups in the candidate resource set of the second control channel. mod denotes the remainder operation.
Figure GDA0003068368940000132
Indicating a rounding down.
According to the above relation (3), it is assumed that the time-frequency resources of the s second control channels corresponding to the HARQ timing k1 are all divided into resource group 1, and the time-frequency resources of the t second control channels corresponding to the HARQ timing k2 are all divided into resource group 2, and if the value of s is much greater than the value of t, the problem of resource allocation inequality between resource group 1 and resource group 2 will result. Similarly, in the same resource group, corresponding to ncce1Time-frequency of x second control channelsThe resource is divided on the resource represented by index 1, corresponding to ncce2If the time-frequency resources of a plurality of second control channels are divided on the resources represented by the indexes 2 in the same resource group, the problem of uneven allocation of the resources in the resource group will be caused. When the resource allocation is not uniform, a part of the resources may be frequently used, and another part of the resources may have different utilization rates. Therefore, in order to solve the problem caused by resource allocation unevenness, the embodiment of the present invention further proposes the following relational expression (3), and by arranging two offset amounts, offset1 and offset2, the problem of resource allocation unevenness among resource groups and/or among resource groups can be avoided.
Specifically, the HARQ timing, the index of the starting time-frequency resource of the first control channel, and the index of the time-frequency resource of the second control channel satisfy the following relation:
Figure GDA0003068368940000133
the offset1 and the offset2 are configured offset amounts of the second network device, and other parameters in the relation (4) may refer to the related description in the relation (3), which is not described herein again.
Specifically, the offset1 is used to adjust the resource group where the time-frequency resource of the second control channel is located, and the offset2 is used to adjust the index of the time-frequency resource of the second control channel in the resource group. When the value of the offset1 is zero, only adjusting the index of the time-frequency resource of the second control channel in the resource group; when the value of the offset2 is zero, only adjusting the resource group where the time-frequency resource of the second control channel is located; when the values of the offset1 and the offset2 are both not zero, the resource group where the time-frequency resource of the second control channel is located and the index in the resource group are adjusted at the same time.
The second network device may configure offset1 and offset2 through higher layer signaling MAC CE signaling or physical layer signaling. Alternatively, the second network device may indicate offset1 and offset2 in the same signaling; alternatively, the second network device may indicate offset1 in one signaling and offset2 in another signaling.
It should be noted that, unless otherwise specified, in the embodiments of the present invention, the starting index is 0, for example, the index of the first resource group is 0, and the index of the second resource group is 1; or the index of the first candidate resource in a resource group is 0, the index of the second candidate resource is 1, and so on.
Optionally, the method may further comprise: the second network equipment transmits indication information, wherein the indication information is used for indicating the number M of beams used for transmitting the control information or the number M of times of repeatedly transmitting the control information, and M is an integer greater than or equal to 1. Accordingly, the first network device receives the indication information.
Specifically, 220 includes: and the first network equipment sends the control information for M times on the time-frequency resource of the second control channel according to the indication information. Specifically, the sending the control information M times on the time-frequency resource of the second control information includes: sending M times of control information on the time frequency resource of a second control channel by adopting M wave beams; or, repeatedly sending the control information M times on the time-frequency resource of the second control channel by using the same beam. Accordingly, the second network device receives the control information sent by the first network device M times.
Optionally, the offset configured by the second network device includes M offset groups, and the M offset groups correspond to the M beams one to one, or the M offset groups correspond to the control information that is repeatedly sent M times one to one. Wherein each offset amount group includes offset1 and offset2 in relation (4).
For example, the xth offset set of the M offset sets corresponds to the xth beam of the M beams, and x is an integer greater than or equal to 1 and less than or equal to M. Alternatively, the offset amount groups and the beams having the corresponding relationship have the same identification, for example, an offset amount group identified as y in the M offset amount groups corresponds to a beam identified as y in the M beams, and y is an integer greater than or equal to 1 and less than or equal to M.
Or, the offset groups having the corresponding relationship and the control information of M times have the same rank, that is, the xth offset group in the M offset groups corresponds to the control information transmitted at the xth time, and x is an integer greater than or equal to 1 and less than or equal to M.
The M offset groups are notified to the first network device by the second network device through higher layer signaling, MAC CE signaling, or physical layer signaling. The physical layer signaling may be control signaling (e.g., DCI signaling), and the higher layer signaling may be RRC signaling.
Optionally, when the M offset groups are notified to the first network device by the second network device through the control signaling, the control signaling may correspond to a plurality of offset groups adjusted by time-frequency resources of a plurality of second control channels. The multiple offset sets may correspond to multiple transmissions of uplink control information transmitted by multiple beams, e.g., a first offset set corresponding to uplink control information transmitted by a first beam, a second offset set corresponding to uplink control information transmitted by a second beam, and so on.
The candidate resources for the second control channel may be configured by resource configuration information sent by the second network device. Specifically, the resource configuration information is used to indicate at least one of candidate time domain resources, candidate frequency domain resources, and candidate code domain resources of the second control channel. Wherein the candidate time domain resource of the second control channel may include at least one of a subframe number and an OFDM symbol offset occupied by the second control channel in the time domain. The candidate frequency-domain resources of the second control channel may include at least one of a starting position of the frequency-domain resources of the second control channel and a frequency-domain bandwidth occupied by the second control channel. The candidate code domain resources of the second control channel may include one or more codewords, such as OCC, occupied by the second control channel in the code domain.
The second network device may send the resource configuration information to the first network device through higher layer signaling and/or physical layer signaling. The index of the time-frequency resource of the second control channel refers to an index of the time-frequency resource of the second control channel in the candidate resource, so that the second control channel can determine the time-frequency resource of the second control channel according to the index and the candidate resource.
Optionally, the second network device may notify the first network device of the resource configuration information through high-layer signaling, and dynamically indicate, through physical layer signaling, an index of the resource configuration of the second control channel used for current control information transmission by the first network device.
Optionally, the resource configuration information may also be used to indicate the number of beams for transmitting control information or the number of times for repeatedly transmitting control information. That is, the number of beams or the number of times of transmitting control information may also be indicated while indicating the candidate resource of the second control channel.
Fig. 3 is a schematic flow chart of a transmission method of control information according to another embodiment of the present invention. As shown in fig. 3, the method includes the following.
310. The second network equipment transmits first indication information, wherein the first indication information is used for indicating the number M of beams for transmitting the control information, or the first indication information is used for indicating the number M of times of repeatedly transmitting the control information, and M is an integer greater than or equal to 2. The first network device receives the first indication information. The first network device may determine, according to the reception of the first indication information, a number M of times of repeatedly transmitting the control information or a number M of beams.
The first indication information may be carried in a higher layer signaling, an MAC CE signaling, or a physical layer signaling, which is not limited in the embodiment of the present invention.
320. And the first network equipment sends the control information M times according to the first indication information. And the second network equipment receives the M times of control information sent by the first network equipment.
Specifically, the first network device may transmit the control information M times using M beams, or repeatedly transmit the control information M times using the same beam.
In the embodiment of the invention, the first network equipment can repeatedly send the control information for M times according to the indication of the second network equipment, which is favorable for improving the reliability of control information transmission.
In addition, the control information is repeatedly transmitted for many times, so that the reliability of control information transmission is improved, and meanwhile, the transmission efficiency is also reduced. Therefore, the second network device may also determine whether to trigger the first network device to repeatedly send the control information according to the link condition. Optionally, when the channel state of the second control channel meets a preset condition, the second network device sends the first indication information to the first network device, and triggers the first network device to repeatedly send the control information for multiple times. The channel state of the second control channel satisfying the preset condition may include: and the value of the CQI of the second control channel is less than or equal to a preset threshold value. When the value of the CQI is less than or equal to the preset threshold, it may be considered that the channel quality condition of the link is seriously degraded, such as to a certain extent. Therefore, the first network equipment is triggered to repeatedly send the control information for many times when the channel state of the second control channel meets the preset condition, so that the reliability of the transmission of the control information is facilitated, and the transmission efficiency is also facilitated to be improved.
Optionally, when the first indication information is used to indicate the number of beams M, the first network device may select M beams from a plurality of beams predefined or preconfigured by the second network device to transmit the control information. Alternatively, the first indication information may also be used to indicate the identities of the M beams, so that the first network device may transmit the control information M times according to the M beams specified by the second network device.
When the first indication information is used to indicate the number M of beams, the time-frequency resources of the second control channels corresponding to N beams of the M beams may be determined according to a dynamic indication signaling of the base station or periodically configured by the base station, and the time-frequency resources of the second control channels corresponding to other M-N beams of the M beams are configured semi-statically by the base station. When the first indication information is used for indicating the number of times M of repeatedly sending the control information, wherein the time-frequency resource for sending the control information for N times is determined according to the dynamic indication signaling of the base station or is periodically configured by the base station, and the time-frequency resource for sending the control information for M-N times is semi-statically configured by the second network equipment. Wherein N is an integer greater than or equal to 1 and less than M. That is, prior to 320, the method may further comprise: 330, the second network device sends second indication information, where the second indication information is used to indicate time-frequency resources of the second control channel corresponding to the M-N beams, or the second indication information is used to indicate time-frequency resources of the control information sent for the M-N times.
Specifically, the second indication information includes indexes of the time-frequency resources of the second control channel of the M-N beams in the multiple candidate time-frequency resources, or the second indication information includes indexes of the time-frequency resources of the second control channel sent by M-N times in the multiple candidate time-frequency resources.
The second indication information may be carried in a higher layer signaling, an MAC CE signaling, or a physical layer signaling, which is not limited in the embodiment of the present invention.
As analyzed above, the second network device triggers the first network device to repeatedly send the control information multiple times when the channel quality of the second control channel sent by the first network device to the second network device does not meet the preset condition, so if resources are reserved for the control information repeatedly sent by the first network device multiple times, this will cause waste of resources. In the embodiment of the invention, the first network equipment is dynamically instructed to repeatedly send the control information for a plurality of times, so that the waste of resources is reduced.
Optionally, the M beams may correspond to M antenna panels (panels) of the first network device. Wherein N of the M beams correspond to a primary antenna panel of the first network device and the other M-N of the M beams correspond to a secondary antenna panel of the first network device. Optionally, the time-frequency resources of the second control channel corresponding to the N beams may be periodically configured by the base station, and the time-frequency resources of the second control channel corresponding to the M-N beams may correspond to a candidate resource pool, where the candidate resource pool includes multiple candidate time-frequency resource locations of the second control channel. Optionally, the candidate resource pool may be predefined, or may be configured to the first network device by the second network device through higher layer signaling. Further, the second network device may inform the first network device of the index of the resource of the second control channel in the candidate resource pool by physical layer signaling (e.g., DCI signaling).
It should be noted that the candidate resource pool may be configured semi-statically by the second network device through higher layer signaling, MAC CE signaling, or other signaling.
It should also be noted that, for the first transmitted second control channel, the second network device may configure the time-frequency resource of the first transmitted second control channel to the first network device.
Fig. 4 is a schematic structural diagram of a network device 400 according to an embodiment of the present invention. The network device 400 shown in fig. 4 may be used to implement the relevant flow of the first network device in fig. 1, fig. 2 or fig. 3. As shown in fig. 4, network device 400 may include a processing unit 410 and a transceiving unit 420.
The network device 400 may be configured to implement the method executed by the first network device in the foregoing method embodiment shown in fig. 1, specifically:
the processing unit 410 is configured to determine a time-frequency resource of a second control channel according to a starting time-frequency resource of a first control channel and an offset of the time-frequency resource of the second control channel, where the offset is configured by a second network device;
the transceiving unit 420 is configured to send control information to the second network device on the time-frequency resource of the second control channel determined by the processing unit 410.
Optionally, the transceiver unit 420 is further configured to receive first indication information sent by the second network device before the processing unit 410 determines the time-frequency resource of the second control channel, where the first indication information is used to indicate the offset.
Optionally, the transceiver unit 420 is further configured to receive second indication information sent by the second network device before receiving the first indication information, where the second indication information is used to indicate a bit number of the first indication information.
Optionally, the transceiver unit 420 is further configured to receive third indication information sent by the second network device before receiving the first indication information, where the third indication information is used to indicate a set of offset amounts where the offset amounts are located. Accordingly, the first indication information includes an index of the offset in the set of offsets.
Optionally, the transceiving unit 420 is further configured to receive fourth indication information sent by the second network device, where the fourth indication information is used to indicate a number M of beams used for sending the control information or a number M of times of repeatedly sending the control information, and M is an integer greater than or equal to 1. Optionally, the transceiver unit 420 is specifically configured to send the control information M times on the time-frequency resource of the second control channel according to the fourth indication information. Optionally, the transceiver unit 420 is specifically configured to use M beams to transmit the M times of control information on the time-frequency resource of the second control channel, or use the same beam to repeatedly transmit the M times of control information on the time-frequency resource of the second control channel.
Alternatively, the network device 400 may be configured to implement the method executed by the first network device in the foregoing method embodiment shown in fig. 2, specifically:
a processing unit 410, configured to determine a time-frequency resource of a second control channel according to a time sequence of a hybrid automatic repeat request, HARQ, and a starting time-frequency resource of a first control channel, where the HARQ time sequence represents a time interval of the second control channel in a time domain relative to a shared channel scheduled by the first control channel;
a transceiving unit 420, configured to send control information to the second network device on the time-frequency resource of the second control channel determined by the processing unit 410.
Optionally, the candidate resource set of the second control channel includes a plurality of resource groups orthogonal to each other, and the time-frequency resource of the second control channel is located in one of the resource groups. The processing unit 410 is specifically configured to determine, according to the HARQ timing sequence, a resource group where the time-frequency resource of the second control channel is located, and determine, according to the starting time-frequency resource of the first control channel, a position of the time-frequency resource of the second control channel in the resource group.
Optionally, the transceiving unit 420 is further configured to receive indication information sent by the second network device, where the indication information is used to indicate a number M of beams used for sending the control information or a number M of times of repeatedly sending the control information, and M is an integer greater than or equal to 1. Correspondingly, the transceiver unit 420 is specifically configured to send the control information to the second network device M times on the time-frequency resource of the second control channel according to the indication information. Optionally, the transceiver unit 420 is specifically configured to use M beams to transmit the M times of control information on the time-frequency resource of the second control channel, or use the same beam to repeatedly transmit the M times of control information on the time-frequency resource of the second control channel.
Alternatively, the network device 400 may be configured to implement the method executed by the first network device in the foregoing method embodiment shown in fig. 3, specifically:
a transceiver unit 420, configured to receive the first indication information, where the first indication information is used to indicate a number M of beams used for sending control information, or the first indication information is used to indicate a number M of times of repeatedly sending control information, where M is an integer greater than or equal to 2;
the processing unit 410 is configured to control the transceiver unit 420 to transmit the control information M times according to the first indication information.
Optionally, the transceiver unit 420 is further configured to receive second indication information sent by the second network device, where the second indication information is used to indicate time-frequency resources corresponding to the M-N beams, or the second indication information is used to indicate time-frequency resources of control information sent M-N times.
For the sake of avoiding repetition, details related to the above method embodiments may be combined and referred to, and are not described herein again.
Fig. 5 is a schematic structural diagram of a network device 500 according to another embodiment of the present invention. As shown in fig. 5, the network device 500 includes a processor 510, a transceiver 520, and a memory 530, and the processor 510, the transceiver 520, and the memory 530 communicate with each other through an internal connection path to transfer control signals and/or data signals. The memory 530 is used for storing instructions and the processor 510 is used for executing the instructions stored by the memory 530. The transceiver 520 is used for transmitting and receiving signals under the control of the processor 510.
In particular, the transceiver 520 is used to implement the functions of the transceiving unit 420 in the network device 400 shown in fig. 4. The processor 510 is configured to implement the functions of the processing unit 410 in the network device 400 shown in fig. 4, and for brevity, will not be described herein again.
Fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention. The network device shown in fig. 6 may be used to implement the related flow of the second network device in fig. 1, fig. 2 or fig. 3. As shown in fig. 6, the network device may include a processing unit 610 and a transceiving unit 620.
The network device 600 may be configured to implement the method executed by the second network device in the foregoing method embodiment shown in fig. 1, specifically:
the processing unit 610 is configured to generate first indication information, where the first indication information is used to indicate an offset of a time-frequency resource of a second control channel;
a transceiving unit 620, configured to send the first indication information generated by the processing unit 610;
the transceiving unit 620 is further configured to receive the control information sent by the first network device on a time-frequency resource of a second control channel, where the time-frequency resource of the second control channel is determined according to the starting time-frequency resource of the first control channel and the offset.
Optionally, the transceiver 620 is further configured to transmit second indication information before transmitting the first indication information, where the second indication information is used to indicate the bit number of the first indication information.
Optionally, the transceiver 620 is further configured to send third indication information before sending the first indication information, where the third indication information is used to indicate a set of offset amounts where the offset amounts are located. Accordingly, the first indication information includes an index of the offset in the set of offsets.
Optionally, the transceiving unit 620 is further configured to transmit fourth indication information, where the fourth indication information is used to indicate a number M of beams used for transmitting the control information or a number M of times of repeatedly transmitting the control information, and M is an integer greater than or equal to 1. Accordingly, the transceiver unit 620 is specifically configured to receive the M times of control information sent by the first network device on the time-frequency resource of the second control channel. Optionally, the transceiver unit 620 is specifically configured to receive, on a time-frequency resource of a second control channel, M times of control information sent by the first network device by using M beams; or receiving the M times of control information sent by the first network device by using the same beam on the time-frequency resource of the second control channel.
Alternatively, the network device 600 may be configured to implement the method executed by the second network device in the foregoing method embodiment shown in fig. 2, specifically:
a processing unit 610, configured to determine a time-frequency resource of a second control channel according to a time sequence of a hybrid automatic repeat request HARQ and a starting time-frequency resource of a first control channel, where the HARQ time sequence represents a time interval of the second control channel in a time domain with respect to a shared channel scheduled by the first control channel;
a transceiving unit 620, configured to receive the control information sent by the first network device on the time-frequency resource of the second control channel determined by the processing unit 610.
Optionally, the candidate resource set of the second control channel includes a plurality of resource groups orthogonal to each other, and the time-frequency resource of the second control channel is located in one of the resource groups. Correspondingly, the processing unit 610 is specifically configured to determine, according to the HARQ timing sequence, a resource group where the time-frequency resource of the second control channel is located, and determine, according to the starting time-frequency resource of the first control channel, a position of the time-frequency resource of the second control channel in the resource group.
Optionally, the transceiving unit 620 is further configured to transmit indication information, where the indication information is used to indicate a number M of beams used for transmitting the control information or a number M of times of repeatedly transmitting the control information, where M is an integer greater than or equal to 1. Accordingly, the transceiver unit 620 is specifically configured to receive the M times of control information sent by the first network device on the time-frequency resource of the second control channel.
Alternatively, the network device 600 may be configured to implement the method executed by the second network device in the foregoing method embodiment shown in fig. 3, specifically:
a processing unit 610, configured to generate first indication information, where the first indication information is used to indicate a number M of beams used for transmitting control information, or the first indication information is used to indicate a number M of times that the control information is repeatedly transmitted, where M is an integer greater than or equal to 2;
a transceiving unit 620, configured to transmit the first indication information.
Optionally, the transceiver 620 is further configured to send second indication information before sending the first indication information, where the second indication information is used to indicate time-frequency resources corresponding to the M-N beams, or the second indication information is used to indicate time-frequency resources of control information sent M-N times.
For the sake of avoiding repetition, details related to the above method embodiments may be combined and referred to, and are not described herein again.
Fig. 7 is a schematic structural diagram of a network device 700 according to another embodiment of the present invention. As shown in fig. 7, the network device 700 includes a processor 710, a transceiver 720 and a memory 730, and the processor 710, the transceiver 720 and the memory 730 communicate with each other through an internal connection path to transfer a control signal and/or a data signal. The memory 730 is used for storing instructions and the processor 710 is used for executing the instructions stored by the memory 730. The transceiver 720 is used for transceiving signals under the control of the processor 710.
In particular, the transceiver 720 is used to implement the functions of the transceiving unit 620 in the network device 600 shown in fig. 6. The processor 710 is configured to implement the functions of the processing unit 610 in the network device 600 shown in fig. 6, and for brevity, will not be described herein again.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (40)

1. A method for transmitting control information, comprising:
a first network device receives first indication information sent by a second network device, wherein the first indication information is used for indicating offset of time-frequency resources of a second control channel, and the first indication information comprises an index of the offset in an offset set corresponding to a bit number of the first indication information;
the first network equipment determines the time-frequency resource of the second control channel according to the starting time-frequency resource of the first control channel and the offset, wherein the offset is configured by the second network equipment;
and the first network equipment sends control information to the second network equipment on the time-frequency resource of the second control channel.
2. The method of claim 1, wherein before the first network device receives the first indication information sent by the second network device, the method further comprises:
and the first network equipment receives second indication information sent by the second network equipment, wherein the second indication information is used for indicating the bit number of the first indication information.
3. The method of claim 1, wherein before the first network device receives the first indication information sent by the second network device, the method further comprises:
the first network device receives third indication information sent by the second network device, wherein the third indication information is used for indicating an offset set in which the offset is located;
the first indication information includes an index of the offset in the set of offsets.
4. The method according to any of claims 1 to 3, wherein the index of the start time-frequency resource of the first control channel, the offset and the index of the time-frequency resource of the second control channel satisfy the following relation:
nPUCCH＝nPDCCH+Δ+offset
wherein n isPUCCHAn index, n, representing the time-frequency resources of the second control channelPDCCHAnd the offset represents the offset, and delta represents a preset offset.
5. The method of any of claims 1 to 3, further comprising:
the first network device receives fourth indication information sent by the second network device, where the fourth indication information is used to indicate a number M of beams for sending the control information or a number M of times for repeatedly sending the control information, and M is an integer greater than or equal to 1;
the sending, by the first network device, control information to the second network device on the time-frequency resource of the second control channel includes:
and the first network equipment sends the control information on the time-frequency resource of the second control channel for M times according to the fourth indication information.
6. The method of claim 5, wherein the offset comprises M offsets, and wherein the M offsets correspond to the M beams one to one, or wherein the M offsets correspond to the control information repeatedly transmitted M times one to one.
7. A method for transmitting control information, comprising:
the second network equipment sends first indication information, wherein the first indication information is used for indicating the offset of the time-frequency resource of a second control channel, and the first indication information comprises an index of the offset in an offset set corresponding to the bit number of the first indication information;
and the second network equipment receives the control information sent by the first network equipment on the time-frequency resource of a second control channel, wherein the time-frequency resource of the second control channel is determined according to the starting time-frequency resource of the first control channel and the offset.
8. The method of claim 7, wherein before the second network device sends the first indication information, the method further comprises:
and the second network equipment sends second indication information, wherein the second indication information is used for indicating the bit number of the first indication information.
9. The method of claim 7, wherein before the second network device sends the first indication information, the method further comprises:
the second network equipment sends third indication information, wherein the third indication information is used for indicating the offset set in which the offset is located;
the first indication information includes an index of the offset in the set of offsets.
10. The method according to any of claims 7 to 9, wherein the index of the start time-frequency resource of the first control channel, the offset and the index of the time-frequency resource of the second control channel satisfy the following relation:
nPUCCH＝nPDCCH+Δ+offset
wherein n isPUCCHAn index, n, representing the time-frequency resources of the second control channelPDCCHAnd the offset represents the offset, and delta represents a preset offset.
11. The method of any of claims 7 to 9, further comprising:
the second network device sends fourth indication information, where the fourth indication information is used to indicate a number M of beams for sending the control information or a number M of times for repeatedly sending the control information, and M is an integer greater than or equal to 1;
the second network device receives the control information sent by the first network device on the time-frequency resource of a second control channel, and the method includes:
and the second network equipment receives the control information sent by the first network equipment for M times on the time-frequency resource of the second control channel.
12. The method of claim 11, wherein the offset comprises M offsets, and wherein the M offsets correspond to the M beams one to one, or wherein the M offsets correspond to the control information repeatedly transmitted M times one to one.
13. A method for transmitting control information, comprising:
the method comprises the steps that a first network device determines a resource group where time-frequency resources of a second control channel are located according to a hybrid automatic repeat request (HARQ) time sequence, and determines the position of the time-frequency resources of the second control channel in the resource group according to starting time-frequency resources of a first control channel, wherein the HARQ time sequence represents the time interval of the second control channel relative to a shared channel scheduled by the first control channel on a time domain, a candidate resource set of the second control channel comprises a plurality of resource groups which are mutually orthogonal, and the time-frequency resources of the second control channel are located in one of the plurality of resource groups;
and the first network equipment sends control information to second network equipment on the time-frequency resource of the second control channel.
14. The method of claim 13, wherein the timing of the HARQ, the index of the starting time-frequency resource of the first control channel, and the index of the time-frequency resource of the second control channel satisfy the following relation:
Figure FDA0003082595940000021
wherein n isPUCCHAn index representing time-frequency resources of the second control channel, k represents a timing of the HARQ, ncceThe index of the starting time-frequency resource of the first control channel is represented, N represents the number of candidate resources in the candidate resource set of the second control channel, and K represents the number of mutually orthogonal resource groups in the candidate resource set of the second control channel.
15. The method of claim 13, wherein the timing of the HARQ, the index of the starting time-frequency resource of the first control channel, and the index of the time-frequency resource of the second control channel satisfy the following relation:
Figure FDA0003082595940000031
wherein n isPUCCHAn index representing time-frequency resources of the second control channel, k represents a timing of the HARQ, ncceAn index representing a start time-frequency resource of the first control channel, N representing a number of candidate resources in the candidate resource set of the second control channel, K representing a number of mutually orthogonal resource groups in the candidate resource set of the second control channel, and offset1 and offset2 being offsets configured by the second network device.
16. The method of any of claims 13 to 15, further comprising:
the first network device receives indication information sent by the second network device, where the indication information is used to indicate a number M of beams for sending the control information or a number M of times for repeatedly sending the control information, and M is an integer greater than or equal to 1;
the sending, by the first network device, control information to the second network device on the time-frequency resource includes:
and the first network equipment sends the control information to the second network equipment for M times on the time-frequency resource of the second control channel according to the indication information.
17. A method for transmitting control information, comprising:
the second network equipment determines time-frequency resources of a second control channel according to a hybrid automatic repeat request (HARQ) time sequence and starting time-frequency resources of a first control channel, wherein the HARQ time sequence represents a time interval of the second control channel on a time domain relative to a shared channel scheduled by the first control channel, a candidate resource set of the second control channel comprises a plurality of resource groups which are orthogonal to each other, and the time-frequency resources of the second control channel are located in one of the resource groups;
the resource group where the time-frequency resource of the second control channel is located is determined according to the time sequence of the HARQ, and the position of the time-frequency resource of the second control channel in the resource group is determined according to the initial time-frequency resource of the first control channel;
and the second network equipment receives the control information sent by the first network equipment on the time-frequency resource of the second control channel.
18. The method of claim 17, wherein the timing of the HARQ, the index of the starting time-frequency resource of the first control channel, and the index of the time-frequency resource of the second control channel satisfy the following relation:
Figure FDA0003082595940000032
wherein n isPUCCHAn index representing time-frequency resources of the second control channel, k represents a timing of the HARQ, ncceAn index representing a starting time-frequency resource of the first control channel, N representing a number of candidate resources in the candidate resource set of the second control channel, K representing the candidate resource set of the second control channelThe number of mutually orthogonal sets of resources in the portfolio.
19. The method of claim 17, wherein the timing of the HARQ, the index of the starting time-frequency resource of the first control channel, and the index of the time-frequency resource of the second control channel satisfy the following relation:
Figure FDA0003082595940000041
wherein n isPUCCHAn index representing time-frequency resources of the second control channel, k represents a timing of the HARQ, ncceAn index representing a start time-frequency resource of the first control channel, N representing a number of candidate resources in the candidate resource set of the second control channel, K representing a number of mutually orthogonal resource groups in the candidate resource set of the second control channel, and offset1 and offset2 being offsets configured by the second network device.
20. The method of any one of claims 17 to 19, further comprising:
the second network equipment sends indication information, wherein the indication information is used for indicating the number M of beams used for sending the control information or the number M of times of repeatedly sending the control information, and M is an integer greater than or equal to 1;
the second network device receives the control information sent by the first network device on the time-frequency resource of the second control channel, and the method includes:
and the second network equipment receives the control information sent by the first network equipment for M times on the time-frequency resource of the second control channel.
21. A network device, comprising:
a processing unit, configured to determine a time-frequency resource of a second control channel according to a starting time-frequency resource of a first control channel and an offset of the time-frequency resource of the second control channel, where the offset is configured by a second network device;
a transceiver unit, configured to receive first indication information sent by the second network device, where the first indication information is used to indicate the offset, and the first indication information includes an index of the offset in an offset set corresponding to a bit number of the first indication information;
the transceiver unit is further configured to send control information to the second network device on the time-frequency resource of the second control channel determined by the processing unit.
22. The network device of claim 21,
the transceiver unit is further configured to receive second indication information sent by the second network device before receiving the first indication information, where the second indication information is used to indicate a bit number of the first indication information.
23. The network device of claim 21,
the transceiver unit is further configured to receive, before receiving the first indication information, third indication information sent by the second network device, where the third indication information is used to indicate an offset set in which the offset is located;
the first indication information includes an index of the offset in the set of offsets.
24. The network device of any of claims 21 to 23, wherein the index of the start time-frequency resource of the first control channel, the offset, and the index of the time-frequency resource of the second control channel satisfy the following relation:
nPUCCH＝nPDCCH+Δ+offset
wherein n isPUCCHAn index, n, representing the time-frequency resources of the second control channelPDCCHIndex representing a start time-frequency resource of the first control channel offset represents the offset amount, and Δ represents a preset offset amount.
25. The network device of any of claims 21 to 23,
the transceiver unit is further configured to receive fourth indication information sent by the second network device, where the fourth indication information is used to indicate a beam number M for sending the control information or a number of times M of repeatedly sending the control information, and M is an integer greater than or equal to 1;
the transceiver unit is specifically configured to send the control information M times on the time-frequency resource of the second control channel according to the fourth indication information.
26. The network device of claim 25, wherein the offset comprises M offsets, and wherein the M offsets correspond to the M beams one to one, or wherein the M offsets correspond to the control information repeatedly transmitted M times one to one.
27. A network device, comprising:
a processing unit, configured to generate first indication information, where the first indication information is used to indicate an offset of a time-frequency resource of a second control channel;
a transceiver unit, configured to send the first indication information generated by the processing unit, where the first indication information includes an index of the offset in an offset set corresponding to a bit number of the first indication information;
the transceiver unit is further configured to receive, on the time-frequency resource of the second control channel, the control information sent by the first network device, where the time-frequency resource of the second control channel is determined according to the starting time-frequency resource of the first control channel and the offset.
28. The network device of claim 27,
the transceiver unit is further configured to send second indication information before sending the first indication information, where the second indication information is used to indicate a bit number of the first indication information.
29. The network device of claim 27,
the transceiver unit is further configured to send third indication information before sending the first indication information, where the third indication information is used to indicate an offset set in which the offset is located;
the first indication information includes an index of the offset in the set of offsets.
30. The network device of any of claims 27 to 29, wherein the index of the start time-frequency resource of the first control channel, the offset, and the index of the time-frequency resource of the second control channel satisfy the following relation:
nPUCCH＝nPDCCH+Δ+offset
wherein n isPUCCHAn index, n, representing the time-frequency resources of the second control channelPDCCHAnd the offset represents the offset, and delta represents a preset offset.
31. The network device of any one of claims 27 to 29,
the transceiver unit is further configured to send fourth indication information, where the fourth indication information is used to indicate a number M of beams used for sending the control information or a number M of times of repeatedly sending the control information, and M is an integer greater than or equal to 1;
the transceiver unit is specifically configured to receive the control information sent by the first network device M times on the time-frequency resource of the second control channel.
32. The network device of claim 31, wherein the offset comprises M offsets, and wherein the M offsets correspond to the M beams one to one, or wherein the M offsets correspond to the control information repeatedly transmitted M times one to one.
33. A network device, comprising:
a processing unit, configured to determine, according to a hybrid automatic repeat request HARQ timing sequence, a resource group in which a time-frequency resource of a second control channel is located, and determine, according to an initial time-frequency resource of a first control channel, a position of the time-frequency resource of the second control channel in the resource group, where the HARQ timing sequence represents a time interval of the second control channel in a time domain with respect to a shared channel scheduled by the first control channel, a candidate resource set of the second control channel includes multiple resource groups that are orthogonal to each other, and the time-frequency resource of the second control channel is located in one of the multiple resource groups;
and the transceiving unit is used for sending control information to the second network equipment on the time-frequency resource of the second control channel determined by the processing unit.
34. The network device of claim 33, wherein the timing of HARQ, the index of the starting time-frequency resource of the first control channel, and the index of the time-frequency resource of the second control channel satisfy the following relation:
Figure FDA0003082595940000061
wherein n isPUCCHAn index representing time-frequency resources of the second control channel, k represents a timing of the HARQ, ncceThe index of the starting time-frequency resource of the first control channel is represented, N represents the number of candidate resources in the candidate resource set of the second control channel, and K represents the number of mutually orthogonal resource groups in the candidate resource set of the second control channel.
35. The network device of claim 33, wherein the timing of HARQ, the index of the starting time-frequency resource of the first control channel, and the index of the time-frequency resource of the second control channel satisfy the following relation:
Figure FDA0003082595940000062
wherein n isPUCCHAn index representing time-frequency resources of the second control channel, k represents a timing of the HARQ, ncceAn index representing a start time-frequency resource of the first control channel, N representing a number of candidate resources in the candidate resource set of the second control channel, K representing a number of mutually orthogonal resource groups in the candidate resource set of the second control channel, and offset1 and offset2 being offsets configured by the second network device.
36. The network device of any one of claims 33 to 35,
the transceiver unit is further configured to receive indication information sent by the second network device, where the indication information is used to indicate a number M of beams used to send the control information or a number M of times of repeatedly sending the control information, and M is an integer greater than or equal to 1;
the transceiver unit is specifically configured to send the control information to the second network device M times on the time-frequency resource of the second control channel according to the indication information.
37. A network device, comprising:
a processing unit, configured to determine, according to a hybrid automatic repeat request HARQ timing sequence, a resource group in which a time-frequency resource of a second control channel is located, and determine, according to an initial time-frequency resource of a first control channel, a position of the time-frequency resource of the second control channel in the resource group, where the HARQ timing sequence represents a time interval of the second control channel in a time domain with respect to a shared channel scheduled by the first control channel, a candidate resource set of the second control channel includes multiple resource groups that are orthogonal to each other, and the time-frequency resource of the second control channel is located in one of the multiple resource groups;
and the transceiving unit is used for receiving the control information sent by the first network equipment on the time-frequency resource of the second control channel determined by the processing unit.
38. The network device of claim 37, wherein the timing of HARQ, the index of the starting time-frequency resource of the first control channel, and the index of the time-frequency resource of the second control channel satisfy the following relation:
Figure FDA0003082595940000063
wherein n isPUCCHAn index representing time-frequency resources of the second control channel, k represents a timing of the HARQ, ncceThe index of the starting time-frequency resource of the first control channel is represented, N represents the number of time-frequency resources in the candidate resource set of the second control channel, and K represents the number of mutually orthogonal resource groups in the candidate resource set of the second control channel.
39. The network device of claim 37, wherein the timing of HARQ, the index of the starting time-frequency resource of the first control channel, and the index of the time-frequency resource of the second control channel satisfy the following relation:
Figure FDA0003082595940000071
wherein n isPUCCHAn index representing time-frequency resources of the second control channel, k represents a timing of the HARQ, ncceAn index representing a starting time-frequency resource of the first control channel, N representing a time in a set of candidate resources of the second control channelThe number of frequency resources, K represents the number of mutually orthogonal resource groups in the candidate resource set of the second control channel, and the offsets 1 and 2 are offsets configured by the network device.
40. The network device of any one of claims 37 to 39,
the transceiver unit is further configured to send indication information, where the indication information is used to indicate a number M of beams used for sending the control information or a number M of times of repeatedly sending the control information, and M is an integer greater than or equal to 1;
the transceiver unit is specifically configured to receive the control information sent by the first network device M times on the time-frequency resource of the second control channel.
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