A method and apparatus for transmitting a control channel

Abstract

The application discloses a kind of control channel transmission and reception method and device, comprising: first communication node determines the second transmission parameter information related to control channel according to first control information and / or first parameter information, and sends the control channel to second communication node according to second transmission parameter information;Wherein, the first parameter information includes at least one of the following information: the demodulation reference signal information corresponding to the first control information, the demodulation reference signal information of the data channel corresponding to the control channel, the type information of the second control information transmitted on the control channel, the channel coding rate information corresponding to the first control information;Wherein, the first control information is sent to the first communication node by the second communication node, and the second control information is sent to the first communication node by the first communication node, wherein the second control information is on the control channel.

Description

[0001] This application is a divisional application of Chinese patent application No. 201710184880.6, filed on March 24, 2017, entitled "A method and apparatus for transmitting a control channel". Technical Field

[0002] This invention relates to the field of communication technology, and in particular to a method and apparatus for transmitting control channels. Background Technology

[0003] 5G New Radio (5G-NR) th The following conclusions were drawn from the RAN1 86b meeting of New Radio: it is necessary to consider both long-duration and short-duration uplink control channels, where the long-duration uplink control channel occupies multiple time-domain symbols and the short-duration uplink control channel occupies a small number of time-domain symbols.

[0004] Different users or different control channels in a time slot may require different numbers of time domain symbols. As a result, control channels occupying different numbers of time domain symbols may coexist in a time slot. How to allocate long-duration uplink control channels and short-duration uplink control channels to minimize the resource fragmentation left for the uplink data domain is a problem that needs further consideration and resolution.

[0005] When the frequency domain resources of long-duration uplink control channels and short-duration uplink control channels overlap, how to allocate their time domain resources and demodulation reference signal resources is also a problem that needs to be further solved.

[0006] When both the uplink control channel and the uplink data channel use beamforming for transmission, whether they can perform multi-user multiple-input multiple-output (MU-MIMO), how to solve the interference problem between the two when using MU-MIMO scheduling, or how to ensure the orthogonality between the demodulation reference signals of the two are also issues that the uplink control channel needs to further address.

[0007] When using beams to transmit the uplink control channel, the following issues need further consideration: when using multiple transmit beams, especially multiple time-division transmit beams to transmit the second uplink control information, how should the time domain resources occupied by the multiple time-division transmit beams be arranged, and how should the base station arrange its own receive beams according to its own scheduling needs, so that the transmitting end can use appropriate transmit beams to transmit the uplink control channel. Summary of the Invention

[0008] To address the aforementioned technical problems, embodiments of the present invention provide a method and apparatus for transmitting control channels.

[0009] This invention provides a method for transmitting control channels, comprising:

[0010] The first communication node determines the second transmission parameter information related to the control channel based on the first control information and / or the first parameter information, and sends the control channel to the second communication node based on the second transmission parameter information.

[0011] The first parameter information includes at least one of the following: demodulation reference signal information corresponding to the first control information, demodulation reference signal information of the data channel corresponding to the control channel, type information of the second control information transmitted on the control channel, channel coding rate information corresponding to the first control information, time resource information of the data channel or the first control information, and CSI information included in the first control information.

[0012] Wherein, the first control information and the data channel are sent from the second communication node to the first communication node, and the second control information is sent from the first communication node to the second communication node, wherein the second control information is on the control channel.

[0013] In this embodiment of the invention, the second transmission parameter information includes at least one of the following: control channel region information, frequency domain resource information occupied by the control channel, time domain symbol information occupied by the control channel, demodulation reference signal information of the control channel, code domain resource occupied by the control channel, and multiplexing mode of multiple second control information.

[0014] In this embodiment of the invention, the first control information includes the transmission configuration information of the data channel.

[0015] In this embodiment of the invention, the demodulation reference signal information includes at least one of the following:

[0016] The port index information of the demodulation reference signal;

[0017] The sequence index information used in the demodulation reference signal.

[0018] In this embodiment of the invention, the method further includes:

[0019] The resource information corresponding to the control channel is obtained based on the demodulation reference signal information of the data channel and at least one of the following: the frequency domain resources corresponding to the data channel, the index information corresponding to the first control information, and the time unit index information corresponding to the data channel.

[0020] In this embodiment of the invention, the method further includes:

[0021] The second frequency domain resource occupied by the control channel is obtained based on the smallest one or more frequency domain resource indices corresponding to the data channel.

[0022] The second frequency domain resource occupied by the control channel is obtained based on the largest one or more frequency domain resource indices corresponding to the data channel.

[0023] The third resource information of the control channel in the second frequency domain resource is obtained based on the demodulation reference signal information corresponding to the data channel.

[0024] In this embodiment of the invention, the third resource information includes at least one of the following:

[0025] The control channel index in the time-frequency resource group in the second frequency domain resource, wherein the second frequency domain resource includes multiple time-frequency resource groups;

[0026] The code domain resource index of the control channel in the second frequency domain resource;

[0027] The demodulation reference signal resource information corresponding to the control channel.

[0028] In this embodiment of the invention, the method further includes:

[0029] The third transmission parameter information of the control channel is obtained based on the demodulation reference signal information corresponding to the first control information and the index information corresponding to the first control information.

[0030] In this embodiment of the invention, the third transmission parameter information includes at least one of the following resource information: time-domain resources corresponding to the control channel, frequency-domain resources corresponding to the control channel, code resources corresponding to the control channel, and time-frequency code resources corresponding to the demodulation reference signal of the control channel.

[0031] In this embodiment of the invention, the method further includes:

[0032] Other signals are transmitted according to the control channel region information. When there is an intersection between the frequency domain resources allocated to other signals in the current time unit and the frequency domain resources where the control channel region is located, the other signals are not transmitted on the control channel region. The other signals include at least one of the following signals: data channel signal, measurement reference signal, demodulation reference signal, access request signal, and scheduling request signal.

[0033] Alternatively, the resources occupied by the control channel are a subset of the resources occupied by the control channel region.

[0034] In this embodiment of the invention, the control channel region information includes at least one of the following:

[0035] The number of sub-regions included in the control channel region, frequency domain resource information of each sub-region, and time domain symbol information corresponding to each sub-region.

[0036] In this embodiment of the invention, the control channel region satisfies one of the following characteristics:

[0037] The control channel region occupies both sides of the predetermined bandwidth;

[0038] The larger the number of time-domain symbols corresponding to the sub-region above the predetermined bandwidth, the higher the frequency domain position it occupies. The higher the frequency domain position, the larger the subcarrier number it belongs to.

[0039] The larger the number of symbols corresponding to the sub-region below the predetermined bandwidth, the lower the frequency domain position it occupies. The lower the frequency domain position, the smaller the subcarrier number it belongs to.

[0040] When the sub-region contains N time-domain symbols, the end symbol of the N time-domain symbols is the end symbol of the second transmission domain;

[0041] When the sub-region contains N time-domain symbols, the start symbol of the N time-domain symbols is the start time-domain symbol of the second transmission domain.

[0042] The second transmission domain corresponds to the area where the second communication node receives signals.

[0043] In this embodiment of the invention, the indication information in the first control information that indicates the number of time-domain symbols related to the control channel includes at least one of the following:

[0044] Is the control channel a long-duration or short-duration channel?

[0045] The starting symbol index of the control channel;

[0046] The end symbol index of the control channel;

[0047] The number of time-domain symbols in the control channel;

[0048] The index of the number of time-domain symbols in the control channel within the agreed set of time-domain symbol counts.

[0049] In this embodiment of the invention, when the control channel is obtained to have a long duration, the number of time-domain symbols of the control channel is equal to the number of time-domain symbols of the corresponding transmission domain, wherein the transmission direction of the corresponding transmission domain and the control channel is the same.

[0050] In this embodiment of the invention, the number of time-domain symbols corresponding to the long-duration control channel is different in different time units.

[0051] In this embodiment of the invention, the method further includes at least one of the following:

[0052] The number of time-domain symbols occupied by the control channel is determined based on the type of the second control information transmitted on the control channel, or the number of frequency-domain symbols occupied by the control channel is determined.

[0053] The number of time-domain symbols in the control channel is determined based on the capability level or channel quality level information of the first communication node, or the number of frequency-domain symbols in the control channel is determined.

[0054] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate corresponding to the first control information, or the number of frequency-domain symbols occupied by the control channel is determined.

[0055] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate of the first data channel corresponding to the second control information, or the number of frequency-domain symbols occupied by the control channel is determined.

[0056] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate of the second data channel, or the number of frequency-domain symbols occupied by the control channel is determined.

[0057] The different control channel types are distinguished by at least one of the following: whether the control information second control information is CSI information or ACK / NACK information; the information length of the control information second control information; the first data channel is the data channel sent by the first communication node to the first communication node; the second data unit is the data channel sent by the first communication node to the second communication node in the current time unit; and the current time unit is the time unit in which the control channel is located.

[0058] In this embodiment of the invention, multiple second control messages with the same number of time-domain symbols are transmitted using one control channel;

[0059] Multiple second control messages of the same type are transmitted using one control channel.

[0060] The different types of second control information are distinguished by at least one of the following: whether the second control information is CSI information or ACK / NACK information, the information length of the second control information, and the service data type corresponding to the second control information;

[0061] The multiple second control information are multiple second control information that need to be fed back in the current time unit.

[0062] In this embodiment of the invention, the method further includes at least one of the following:

[0063] When multiple second control information that need to be fed back in the current time unit are sent on a control channel, the resource information of the control channel is obtained according to the first control information with the highest time unit index among the multiple first control information related to the multiple second control information;

[0064] When multiple second control information that the current time unit needs to feed back is sent on a control channel, the resource information of the control channel is obtained based on the control channel resource information corresponding to the multiple second control information.

[0065] In this embodiment of the invention, the time-frequency domain position of the demodulation reference signal of the control channel is obtained through one of the following methods:

[0066] The demodulation reference signal is obtained from the first control information as to whether it is on the start symbol or the end symbol of the control channel;

[0067] The first control information is used to determine whether the frequency domain resources occupied by the demodulation reference signal in one time domain symbol are continuous or discrete.

[0068] The relevant parameters of the demodulation reference signal are determined based on the number of time-domain symbols of the control channel;

[0069] The relevant parameters of the demodulation reference signal are determined based on whether the control channel and the second data channel can be code-division multiplexed.

[0070] The relevant parameters of the demodulation reference signal are determined based on the number of transmission method sets.

[0071] The relevant parameters of the demodulation reference signal are determined according to the transmission mode of the control channel, wherein the transmission mode includes: single-layer transmission, transmission diversity mode, and repeated transmission;

[0072] The second data channel is either a data channel sent from the first communication node to the second communication node, or a data channel sent from the third communication node to the second communication node.

[0073] In this embodiment of the invention, the first control information satisfies at least one of the following features:

[0074] The first control information is high-level semi-static control information;

[0075] The first control information is physical layer dynamic control information.

[0076] In this embodiment of the invention, the frequency domain resource information of the control channel is obtained through at least one of the following methods:

[0077] Physical layer dynamic information notification frequency domain resources;

[0078] In this embodiment of the invention, the resources occupied by the control channel satisfy the following characteristics:

[0079] The end domain symbol position and start frequency domain resources corresponding to the control channel are obtained, as well as the number of control channel resource units; the multiple control channel resource units are first mapped in the frequency domain and then mapped in the time domain.

[0080] In this embodiment of the invention, the time resource information of the data channel or the first control information includes at least one of the following:

[0081] The data channel or the time unit index information where the first control information is located;

[0082] The data channel or the time-domain symbol index information where the first control information is located;

[0083] The time unit index information where the time domain end position of the data channel or the first control information is located;

[0084] The time-domain symbol index information of the time-domain end position of the data channel or the first control information;

[0085] In this embodiment of the invention, the demodulation reference signal resource information of the second control information is determined based on the CSI information in the first control information.

[0086] In this embodiment of the invention, the CSI information fed back by the first communication node includes the transmission resources corresponding to the first communication node, wherein the transmission resources include one or more of the following resources: transmission beam resources, transmission port resources, transmission precoding matrix resources, transmission time resources, transmission frequency domain resources, and transmission sequence resources.

[0087] In this embodiment of the invention, the first control information satisfies at least one of the following:

[0088] The first control information is common control information;

[0089] The first control information includes control channel resource set information for notifying the current time unit;

[0090] The first control information includes transmission order information for instructing the first communication node to send multiple transmission methods used to transmit the control channel;

[0091] The first control information includes correspondence information between the time domain region of the control channel and multiple transmission methods or sets of transmission methods for transmitting the control channel;

[0092] The first control information includes time-domain and / or frequency-domain resource information corresponding to each of the multiple transmission methods or sets of transmission methods used to send the control channel to the first communication node.

[0093] The first control information includes transmission method information used to notify the first communication node to send the control channel;

[0094] The first control information includes control channel format information used by the first communication node to send the control channel;

[0095] The first control information includes information on the modulation scheme used by the first communication node to send the control channel;

[0096] The first control information includes the coding rate information used by the first communication node to send the control channel.

[0097] In this embodiment of the invention, the method further includes:

[0098] The first communication node randomly selects one or more control channel resources from the set of control channel resources and transmits the control channel on the control channel resource.

[0099] Alternatively, the first communication node may select one or more control channel resources from the control channel resource set according to a predetermined rule, and transmit the control channel on the control channel resource.

[0100] In this embodiment of the invention, the sending method is represented by at least one of the following information:

[0101] Information on the first reference signal port set;

[0102] First reference signal resource index information;

[0103] Time-domain information corresponding to the first reference signal;

[0104] Frequency domain information corresponding to the first reference signal;

[0105] Sequence information corresponding to the first reference signal;

[0106] Send beam logic number information;

[0107] Pre-encoded codewords or codeword sets;

[0108] The quasi-co-position relationship information between the demodulation reference signal and the second reference signal port of the control channel;

[0109] Wherein, the first and second reference signals are reference signals sent by the first communication node.

[0110] And / or the first and second reference signals are reference signals received by the first communication node.

[0111] In this embodiment of the invention, when the first and second reference signals are reference signals received by the first communication node, the first and / or second reference signal information indicates one of the following:

[0112] Information about the transmission method used by the first communication node to send signals;

[0113] The transmission method information used by the first communication node to send the signal and the reception method information used by the receiving end of the signal;

[0114] After the first communication node sends a signal, the receiving method information of the receiving end of the signal;

[0115] The first communication node transmits signals using the transmission method information and receives signals using the reception method information.

[0116] The control channel receiving method provided in this embodiment of the invention includes:

[0117] Send first control information and / or first parameter information to the first communication node.

[0118] The second transmission parameter configuration information of the control channel is determined based on the first control information and / or the first parameter;

[0119] The control channel sent by the first communication node is received according to the determined second parameter configuration information.

[0120] The first parameter information includes at least one of the following: demodulation reference signal information corresponding to the first control information, demodulation reference signal information of the data channel corresponding to the control channel, type information of the second control information transmitted on the control channel, channel coding rate information corresponding to the first control information, time resource information of the data channel or the first control information, and CSI information included in the first control information.

[0121] Wherein, the first control information and the data channel are signals received by the first communication node, and the second control information is a signal sent by the first communication node, wherein the second control information is on the control channel.

[0122] In this embodiment of the invention, the second transmission parameter information includes at least one of the following: control channel region information, frequency domain resource information occupied by the control channel, time domain symbol information occupied by the control channel, demodulation reference signal information of the control channel, code domain resource occupied by the control channel, and multiplexing mode of multiple second control information.

[0123] In this embodiment of the invention, the first control information includes the transmission configuration information of the data channel.

[0124] In this embodiment of the invention, the demodulation reference signal information includes at least one of the following:

[0125] The port index information of the demodulation reference signal;

[0126] The sequence index information used in the demodulation reference signal.

[0127] In this embodiment of the invention, the method further includes:

[0128] The resource information corresponding to the control channel is obtained based on the demodulation reference signal information of the data channel and at least one of the following information, and the control channel is received on the determined resource: the frequency domain resource corresponding to the data channel, the index information corresponding to the first control information, and the time unit index information corresponding to the data channel.

[0129] In this embodiment of the invention, the method further includes:

[0130] The second frequency domain resource occupied by the control channel is obtained based on the smallest one or more frequency domain resource indices corresponding to the data channel.

[0131] The second frequency domain resource occupied by the control channel is obtained based on the largest one or more frequency domain resource indices corresponding to the data channel.

[0132] The third resource information of the control channel in the second frequency domain resource is obtained based on the demodulation reference signal information corresponding to the data channel.

[0133] In this embodiment of the invention, the third resource information includes at least one of the following:

[0134] The control channel index in the time-frequency resource group in the second frequency domain resource, wherein the second frequency domain resource includes multiple time-frequency resource groups;

[0135] The code domain resource index of the control channel in the second frequency domain resource;

[0136] The demodulation reference signal resource information corresponding to the control channel.

[0137] In this embodiment of the invention, the method further includes:

[0138] The third transmission parameter information of the control channel is obtained based on the demodulation reference signal information corresponding to the first control information and the index information corresponding to the first control information, and the control channel is received based on the third transmission parameter information.

[0139] In this embodiment of the invention, the third transmission parameter information includes at least one of the following resource information: time-domain resources corresponding to the control channel, frequency-domain resources corresponding to the control channel, code resources corresponding to the control channel, and time-frequency code resources corresponding to the demodulation reference signal of the control channel.

[0140] In this embodiment of the invention, the method further includes:

[0141] Other signals are received according to the control channel region information. When there is an intersection between the frequency domain resources allocated to other signals in the current time unit and the frequency domain resources where the control channel region is located, the other signals are not received in the control channel region. The other signals include at least one of the following signals: data channel signal, measurement reference signal, demodulation reference signal, access request signal, and scheduling request signal.

[0142] Alternatively, the resources occupied by the control channel are a subset of the resources occupied by the control channel region.

[0143] In this embodiment of the invention, the control channel region information includes at least one of the following:

[0144] The number of sub-regions included in the control channel region, frequency domain resource information of each sub-region, and time domain symbol information corresponding to each sub-region.

[0145] In this embodiment of the invention, the control channel region satisfies one of the following characteristics:

[0146] The control channel region occupies both sides of the predetermined bandwidth;

[0147] The larger the number of time-domain symbols corresponding to the sub-region above the predetermined bandwidth, the higher the frequency domain position it occupies. The higher the frequency domain position, the larger the subcarrier number it belongs to.

[0148] The larger the number of symbols corresponding to the sub-region below the predetermined bandwidth, the lower the frequency domain position it occupies. The lower the frequency domain position, the smaller the subcarrier number it belongs to.

[0149] When the sub-region contains N time-domain symbols, the end symbol of the N time-domain symbols is the end symbol of the second transmission domain;

[0150] When the sub-region contains N time-domain symbols, the start symbol of the N time-domain symbols is the start time-domain symbol of the second transmission domain.

[0151] The second transmission domain corresponds to the area where the second communication node receives signals.

[0152] In this embodiment of the invention, the indication information in the first control information that indicates the number of time-domain symbols related to the control channel includes at least one of the following:

[0153] Is the control channel a long-duration or short-duration channel?

[0154] The starting symbol index of the control channel;

[0155] The end symbol index of the control channel;

[0156] The number of time-domain symbols in the control channel;

[0157] The index of the number of time-domain symbols in the control channel within the agreed set of time-domain symbol counts.

[0158] In this embodiment of the invention, when the control channel is obtained to have a long duration, the number of time-domain symbols of the control channel is equal to the number of time-domain symbols of the corresponding transmission domain, wherein the transmission direction of the corresponding transmission domain and the control channel is the same.

[0159] In this embodiment of the invention, the number of time-domain symbols corresponding to the long-duration control channel is different in different time units.

[0160] In this embodiment of the invention, the method further includes at least one of the following:

[0161] The number of time-domain symbols occupied by the control channel is determined based on the type of the second control information transmitted on the control channel, or the number of frequency-domain symbols occupied by the control channel is determined.

[0162] The number of time-domain symbols in the control channel is determined based on the capability level or channel quality level information fed back by the first communication node, or the number of frequency-domain symbols in the control channel is determined.

[0163] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate corresponding to the first control information, or the number of frequency-domain symbols occupied by the control channel is determined.

[0164] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate of the first data channel corresponding to the second control information, or the number of frequency-domain symbols occupied by the control channel is determined.

[0165] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate of the second data channel, or the number of frequency-domain symbols occupied by the control channel is determined.

[0166] The different control channel types are distinguished by at least one of the following: whether the control information second control information is CSI information or ACK / NACK information; the information length of the control information second control information; the first data channel is sent from the second communication node to the first communication node; the second data channel is sent from the first communication node to the second communication node in the current time unit; and the current time unit is the time unit in which the control channel is located.

[0167] In this embodiment of the invention, multiple second control information messages with the same number of time-domain symbols are received in one control channel;

[0168] Multiple second control information messages of the same type are received in one control channel;

[0169] The different types of second control information are distinguished by at least one of the following: whether the second control information is CSI information or ACK / NACK information, the information length of the second control information, and the data type of the service corresponding to the second control information.

[0170] The plurality of second control information refers to the plurality of second control information from the first communication node that needs to be received in the current time unit.

[0171] In this embodiment of the invention, the method further includes at least one of the following:

[0172] When multiple second control messages that need to be received in the current time unit are received on a single control channel, the resource information of the control channel is obtained based on the first control message with the highest time unit index among the multiple first control messages related to the multiple second control messages.

[0173] When multiple second control messages that the current time unit needs to receive are received on a control channel, the resource information of the control channel is obtained based on the control channel resource information corresponding to the multiple second control messages.

[0174] In this embodiment of the invention, the time-frequency domain position of the demodulation reference signal of the control channel is determined in the following manner, and / or the position information is indicated to the first communication node:

[0175] The first control information indicates whether the demodulation reference signal is on the start symbol or the end symbol of the control channel;

[0176] The first control information indicates whether the frequency domain resources occupied by the demodulation reference signal in one time domain symbol are continuous or discrete.

[0177] The relevant parameters of the demodulation reference signal are determined based on the number of time-domain symbols of the control channel;

[0178] The relevant parameters of the demodulation reference signal are determined based on whether the control channel and the second data channel can be code-division multiplexed.

[0179] The relevant parameters of the demodulation reference signal are determined based on the number of transmission method sets.

[0180] The relevant parameters of the demodulation reference signal are determined according to the transmission mode of the control channel, wherein the transmission mode includes: single-layer transmission, transmission diversity mode, and repeated transmission.

[0181] The second data channel is either a data channel sent from the first communication node to the second communication node, or a data channel sent from the third communication node to the second communication node.

[0182] In this embodiment of the invention, the first control information satisfies at least one of the following features:

[0183] The first control information is high-level semi-static control information;

[0184] The first control information is physical layer dynamic control information.

[0185] In this embodiment of the invention, the frequency domain resource information of the control channel is obtained through at least one of the following methods:

[0186] Physical layer dynamic information notification frequency domain resources;

[0187] In this embodiment of the invention, the resources occupied by the control channel satisfy the following characteristics:

[0188] The end domain symbol position and start frequency domain resources corresponding to the control channel are obtained, as well as the number of control channel resource units; the multiple control channel resource units are first mapped in the frequency domain and then mapped in the time domain.

[0189] In this embodiment of the invention, the time resource information of the data channel or the first control information includes at least one of the following:

[0190] The data channel or the time unit index information where the first control information is located;

[0191] The data channel or the time-domain symbol index information where the first control information is located;

[0192] The time unit index information where the time domain end position of the data channel or the first control information is located;

[0193] The time-domain symbol index information of the time-domain end position of the data channel or the first control information;

[0194] In this embodiment of the invention, the demodulation reference signal resource information of the second control information is determined based on the CSI information in the first control information.

[0195] In this embodiment of the invention, the CSI information fed back by the first communication node includes the transmission resources corresponding to the first communication node, wherein the transmission resources include one or more of the following resources: transmission beam resources, transmission port resources, transmission precoding matrix resources, transmission time resources, transmission frequency domain resources, and transmission sequence resources.

[0196] In this embodiment of the invention, the first control information satisfies at least one of the following:

[0197] The first control information is common control information;

[0198] The first control information includes control channel resource set information for notifying the current time unit;

[0199] The first control information includes transmission order information for instructing the first communication node to send multiple transmission methods used to transmit the control channel;

[0200] The first control information includes correspondence information between the time domain region of the control channel and multiple transmission methods or sets of transmission methods for transmitting the control channel;

[0201] The first control information includes time-domain and / or frequency-domain resource information corresponding to each of the multiple transmission methods or sets of transmission methods used to send the control channel to the first communication node.

[0202] The first control information includes transmission method information used to notify the first communication node to send the control channel;

[0203] The first control information includes control channel format information used by the first communication node to send the control channel;

[0204] The first control information includes information on the modulation scheme used by the first communication node to send the control channel;

[0205] The first control information includes the coding rate information used by the first communication node to send the control channel.

[0206] In this embodiment of the invention, the method further includes:

[0207] On all resource sets of the control channel resource set, detect the control channel sent by the first communication node;

[0208] According to predetermined rules, the control channel transmitted by the first communication node is detected on a subset of the control channel resource set.

[0209] In this embodiment of the invention, the sending method is represented by at least one of the following information:

[0210] Information on the first reference signal port set;

[0211] First reference signal resource index information;

[0212] Time-domain information corresponding to the first reference signal;

[0213] Frequency domain information corresponding to the first reference signal;

[0214] Sequence information corresponding to the first reference signal;

[0215] Send beam logic number information;

[0216] Pre-encoded codewords or codeword sets;

[0217] The quasi-co-position relationship information between the demodulation reference signal and the second reference signal port of the control channel;

[0218] Wherein, the first and second reference signals are reference signals sent by the first communication node.

[0219] And / or the first and second reference signals are reference signals received by the first communication node.

[0220] In this embodiment of the invention, when the first and second reference signals are reference signals received by the first communication node, the first and / or second reference signal information indicates one of the following:

[0221] Information about the transmission method used by the first communication node to send signals;

[0222] The transmission method information used by the first communication node to send the signal and the reception method information used by the receiving end of the signal;

[0223] After the first communication node sends a signal, the receiving method information of the receiving end of the signal;

[0224] The first communication node transmits signals using the transmission method information and receives signals using the reception method information.

[0225] A control channel transmitting apparatus, the apparatus comprising:

[0226] The receiving unit is used to receive first control information and / or first parameter information;

[0227] The determining unit is configured to determine second transmission parameter information related to the control channel based on the first control information and / or the first parameter information;

[0228] A transmitting unit is used to transmit the control channel to a second communication node according to the second transmission parameter information;

[0229] The first parameter information includes at least one of the following: demodulation reference signal information corresponding to the first control information, demodulation reference signal information of the data channel corresponding to the control channel, type information of the second control information transmitted on the control channel, and channel coding rate information corresponding to the first control information.

[0230] Wherein, the first control information is sent from the second communication node to the first communication node, and the second control information is sent from the first communication node to the first communication node, wherein the second control information is on the control channel.

[0231] In this embodiment of the invention, the second transmission parameter information includes at least one of the following: control channel region information, frequency domain resource information occupied by the control channel, time domain symbol information occupied by the control channel, demodulation reference signal information of the control channel, code domain resource occupied by the control channel, and multiplexing mode of multiple second control information.

[0232] In this embodiment of the invention, the resource information corresponding to the control channel is obtained based on the demodulation reference signal information of the data channel and at least one of the following: the frequency domain resource corresponding to the data channel, the index information corresponding to the first control information, and the time unit index information corresponding to the data channel.

[0233] In this embodiment of the invention, the indication information in the first control information indicating the number of control channels includes at least one of the following:

[0234] Is the control channel a long-duration or short-duration channel?

[0235] The starting symbol index of the control channel;

[0236] The end symbol index of the control channel;

[0237] The number of time-domain symbols in the control channel;

[0238] The index of the number of time-domain symbols in the control channel within the agreed set of time-domain symbol counts.

[0239] In this embodiment of the invention, the number of time-domain symbols occupied by the control channel is determined according to the type of the second control information transmitted on the control channel, or the number of frequency-domain symbols occupied by the control channel is determined.

[0240] The number of time-domain symbols in the control channel is determined based on the capability level or channel quality level information of the first communication node, or the number of frequency-domain symbols in the control channel is determined.

[0241] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate corresponding to the first control information, or the number of frequency-domain symbols occupied by the control channel is determined.

[0242] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate of the first data channel corresponding to the second control information, or the number of frequency-domain symbols occupied by the control channel is determined.

[0243] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate of the second data channel, or the number of frequency-domain symbols occupied by the control channel is determined.

[0244] The different control channel types are distinguished by at least one of the following: whether the control information second control information is CSI information or ACK / NACK information; the information length of the control information second control information; the first data channel is the data channel sent by the first communication node to the first communication node; the second data unit is the data channel sent by the first communication node to the second communication node in the current time unit; and the current time unit is the time unit in which the control channel is located.

[0245] A control channel receiving device, the device comprising:

[0246] The sending unit is used to send first control information and / or first parameter information to the first communication node;

[0247] The receiving unit is configured to receive a control channel sent by a first communication node according to second transmission parameter information, wherein the second transmission parameter information is: second transmission parameter information related to the control channel determined by the first communication node according to first control information and / or first parameter information;

[0248] The first parameter information includes at least one of the following: demodulation reference signal information corresponding to the first control information, demodulation reference signal information of the data channel corresponding to the control channel, type information of the second control information transmitted on the control channel, and channel coding rate information corresponding to the first control information.

[0249] Wherein, the first control information is sent from the second communication node to the first communication node, and the second control information is sent from the first communication node to the first communication node, wherein the second control information is on the control channel.

[0250] In this embodiment of the invention, the second transmission parameter information includes at least one of the following: control channel region information, frequency domain resource information occupied by the control channel, time domain symbol information occupied by the control channel, demodulation reference signal information of the control channel, code domain resource occupied by the control channel, and multiplexing mode of multiple second control information.

[0251] In this embodiment of the invention, the first control information is the first control information related to the data channel corresponding to the control channel;

[0252] The data channel and the first control information are received by the first communication node from the second communication node.

[0253] In this embodiment of the invention, the resource information corresponding to the control channel is obtained based on the demodulation reference signal information of the data channel and at least one of the following: the frequency domain resource corresponding to the data channel, the index information corresponding to the first control information, and the time unit index information corresponding to the data channel.

[0254] In this embodiment of the invention, other signals are transmitted according to the control channel region information. When there is an intersection between the frequency domain resources allocated to other signals in the current time unit and the frequency domain resources where the control channel region is located, the other signals are not transmitted on the control channel region. The other signals include at least one of the following signals: data channel signal, measurement reference signal, demodulation reference signal, access request signal, and scheduling request signal.

[0255] Alternatively, the resources occupied by the control channel are a subset of the resources occupied by the control channel region.

[0256] In this embodiment of the invention, the control channel region satisfies one of the following characteristics:

[0257] The control channel region occupies both sides of the predetermined bandwidth;

[0258] The larger the number of time-domain symbols corresponding to the sub-region above the predetermined bandwidth, the higher the frequency domain position it occupies. The higher the frequency domain position, the larger the subcarrier number it belongs to.

[0259] The larger the number of symbols corresponding to the sub-region below the predetermined bandwidth, the lower the frequency domain position it occupies. The lower the frequency domain position, the smaller the subcarrier number it belongs to.

[0260] When the sub-region contains N time-domain symbols, the end symbol of the N time-domain symbols is the end symbol of the second transmission domain;

[0261] When the sub-region contains N time-domain symbols, the start symbol of the N time-domain symbols is the start time-domain symbol of the second transmission domain;

[0262] The second transmission domain corresponds to the area where the second communication node receives signals.

[0263] In the technical solution of this embodiment of the invention, a first communication node determines second transmission parameter information related to the control channel based on first control information and / or first parameter information, and sends the control channel to a second communication node based on the second transmission parameter information. The first parameter information includes at least one of the following: demodulation reference signal information corresponding to the first control information, demodulation reference signal information of the data channel corresponding to the control channel, type information of the second control information transmitted on the control channel, and channel coding rate information corresponding to the first control information. The first control information is sent from the second communication node to the first communication node, and the second control information is sent from the first communication node to the first communication node, wherein the second control information is on the control channel. By adopting the technical solution of this embodiment of the invention, the resource information of the control channel is determined using demodulation reference signal information related to the data channel corresponding to the control channel, or the first control information related to the data channel corresponding to the control channel, reducing signaling overhead and achieving implicit resource notification. The resource information occupied by the control channel, as well as other implicit mapping relationships, are also determined using the type of second control information transmitted on the control channel, reducing the signaling notification overhead of control channel resources. Meanwhile, this invention notifies the control channel area information, which can reduce the frequency domain fragmentation problem in the transmission domain caused by control channels of varying lengths within a time unit, thereby improving resource utilization and reducing signaling overhead.

[0264] A method for determining the transmission mode of a control channel, the method comprising:

[0265] The first communication node determines the transmission method of the control channel based on the transmission method of the data channel, and sends the control channel to the second communication node according to the determined transmission method;

[0266] Alternatively, the first communication node determines the transmission method of the third type of control channel based on the transmission method of the fourth type of control channel, and transmits the third type of control channel to the second communication node according to the determined transmission method.

[0267] In this embodiment of the invention, the sending method is distinguished by at least one of the following features:

[0268] Frequency domain resources where the reference signal is located, time domain resources where the reference signal is located, sequence resources used by the reference signal, beam resources used by the reference signal, precoding matrix resources used by the reference signal, reference signal resource index where the reference signal is located, and quasi-co-positional relationships between reference signals;

[0269] The reference signal is sent by the first communication node.

[0270] And / or the reference signal is received by the first communication node.

[0271] In this embodiment of the invention, the method of determining the transmission of the control channel satisfies at least one of the following features:

[0272] When the transmission time interval between the control channel and the data channel is less than a predetermined threshold, the transmission mode of the control channel is determined according to the transmission mode of the data channel;

[0273] The transmission method of the control channel remains unchanged after the transmission method of the data channel changes, until a new notification signaling is received;

[0274] When the transmission time interval between the third type of control channel and the fourth type of control channel is less than a predetermined threshold, the transmission mode of the third type of control channel is determined according to the transmission mode of the fourth type of control channel.

[0275] The transmission method of the third type of control channel remains unchanged after the transmission method of the fourth type of control channel is changed, until a new notification signaling is received.

[0276] When the control channel belongs to the first type of control channel, the transmission method of the control channel changes according to the transmission method of the data channel;

[0277] When the control channel belongs to the second type of control channel, the transmission method of the control channel does not change according to the transmission method of the data channel;

[0278] Receive signaling information sent by the second communication node, and determine whether the transmission mode of the control channel changes according to the transmission mode of the data channel based on the signaling information;

[0279] Receive signaling information sent by the second communication node, and determine whether the transmission method of the third type of control channel changes according to the transmission method of the fourth type of control channel based on the signaling information;

[0280] The transmission mode of the control channel changes only within a time window according to the transmission mode of the data channel or the fourth type of control channel. Outside the time window, the transmission mode of the control channel reverts to the original transmission mode.

[0281] In this embodiment of the invention, the different types of control channels are distinguished based on at least one of the following characteristics:

[0282] The control information type carried by the control channel;

[0283] The number of time-domain symbols occupied by the control channel;

[0284] The number of frequency domain resources used by the control channel;

[0285] The number of transmission methods used by the control channel;

[0286] The number of transmission modes used by the control channel.

[0287] A method for determining a control channel receiving mode, the method comprising:

[0288] The second communication node receives the control channel sent by the first communication node according to the determined receiving method.

[0289] The determined receiving method is determined based on the receiving method of the data channel sent by the first communication node, or the determined receiving method is determined based on the receiving method of the fourth type of control channel sent by the first communication node.

[0290] In this embodiment of the invention, the determined receiving method is distinguished by at least one of the following features:

[0291] Frequency domain resources where the reference signal is located, time domain resources where the reference signal is located, sequence resources used by the reference signal, beam resources used by the reference signal, precoding matrix resources used by the reference signal, reference signal resource index where the reference signal is located, beam resources used by the reference signal, quasi-co-positional relationships between participating signals;

[0292] The reference signal is sent by the first communication node.

[0293] And / or the reference signal is received by the first communication node.

[0294] In this embodiment of the invention, the determined receiving method satisfies at least one of the following features:

[0295] When the transmission time interval between the control channel and the data channel is less than a predetermined threshold, the reception mode of the control channel is determined according to the reception mode of the data channel;

[0296] The receiving method of the control channel remains unchanged after the receiving method of the data channel changes, until a new notification signaling is received.

[0297] When the transmission time interval between the control channel and the fourth type of control channel is less than a predetermined threshold, the reception method of the control channel is determined according to the reception method of the fourth type of control channel.

[0298] The receiving method of the control channel remains unchanged after the receiving method of the fourth type of control channel is changed, until a new notification signaling is received.

[0299] When the control channel belongs to the first type of control channel, the receiving method of the control channel changes according to the receiving method of the data channel;

[0300] When the control channel belongs to the third type of control channel, the receiving method of the control channel changes according to the receiving method of the data channel;

[0301] When the control channel belongs to the second type of control channel, the receiving method of the control channel does not change according to the receiving method of the data channel.

[0302] In this embodiment of the invention, the different types of control channels are distinguished based on at least one of the following characteristics:

[0303] The control information type carried by the control channel;

[0304] The number of time-domain symbols occupied by the control channel;

[0305] The number of frequency domain resources used by the control channel;

[0306] The number of transmission methods used by the control channel;

[0307] The number of transmission modes used by the control channel.

[0308] In this embodiment of the invention, the method further includes:

[0309] Sending signaling information to the first communication node, the signaling information including at least one of the following:

[0310] The signaling information includes information on whether the reception method of the control channel changes according to the reception method of the data channel;

[0311] The signaling information includes information on whether the reception method of the control channel has changed according to the reception method of the fourth type of control channel;

[0312] The signaling information includes information on whether the transmission method of the control channel changes according to the transmission method of the data channel;

[0313] The signaling information includes information on whether the transmission method of the control channel has changed according to the transmission method of the fourth type of control channel;

[0314] The receiving mode of the control channel changes only within a time window according to the receiving mode of the data channel or the fourth type of control channel. Outside the time window, the receiving mode of the control channel reverts to the original receiving mode.

[0315] A first determining device for a control channel transmission mode, the first determining device comprising:

[0316] The determining unit is used to determine the transmission mode of the control channel based on the transmission mode of the data channel, or to determine the transmission mode of the third type of control channel based on the transmission mode of the fourth type of control channel.

[0317] The transmitting unit is used to transmit a control channel to the second communication node according to a determined transmitting method, or to transmit the third type of control channel to the second communication node according to a determined transmitting method.

[0318] In this embodiment of the invention, the sending method is distinguished by at least one of the following features:

[0319] Frequency domain resources where the reference signal is located, time domain resources where the reference signal is located, sequence resources used by the reference signal, beam resources used by the reference signal, precoding matrix resources used by the reference signal, reference signal resource index where the reference signal is located, and quasi-co-positional relationships between reference signals;

[0320] The reference signal is sent by the first communication node.

[0321] And / or the reference signal is received by the first communication node.

[0322] In this embodiment of the invention, the method of determining the transmission of the control channel satisfies at least one of the following features:

[0323] When the transmission time interval between the control channel and the data channel is less than a predetermined threshold, the transmission mode of the control channel is determined according to the transmission mode of the data channel;

[0324] The transmission method of the control channel remains unchanged after the transmission method of the data channel changes, until a new notification signaling is received;

[0325] When the transmission time interval between the third type of control channel and the fourth type of control channel is less than a predetermined threshold, the transmission mode of the third type of control channel is determined according to the transmission mode of the fourth type of control channel.

[0326] The transmission method of the third type of control channel remains unchanged after the transmission method of the fourth type of control channel is changed, until a new notification signaling is received.

[0327] When the control channel belongs to the first type of control channel, the transmission method of the control channel changes according to the transmission method of the data channel;

[0328] When the control channel belongs to the second type of control channel, the transmission method of the control channel does not change according to the transmission method of the data channel;

[0329] Receive signaling information sent by the second communication node, and determine whether the transmission mode of the control channel changes according to the transmission mode of the data channel based on the signaling information;

[0330] Receive signaling information sent by the second communication node, and determine whether the transmission method of the third type of control channel changes according to the transmission method of the fourth type of control channel based on the signaling information;

[0331] The transmission mode of the control channel changes only within a time window according to the transmission mode of the data channel or the fourth type of control channel. Outside the time window, the transmission mode of the control channel reverts to the original transmission mode.

[0332] The different types of control channels are distinguished based on at least one of the following characteristics:

[0333] The control information type carried by the control channel;

[0334] The number of time-domain symbols occupied by the control channel;

[0335] The number of frequency domain resources used by the control channel;

[0336] The number of transmission methods used by the control channel;

[0337] The number of transmission modes used by the control channel.

[0338] A second determining device for a control channel receiving mode, the second determining device comprising:

[0339] A receiving unit is configured to receive a control channel sent by a first communication node according to a determined receiving method; the determined receiving method is determined based on the receiving method of receiving a data channel sent by the first communication node, or the determined receiving method is determined based on the receiving method of receiving a fourth type of control channel sent by the first communication node.

[0340] In this embodiment of the invention, the determined receiving method is distinguished by at least one of the following features:

[0341] Frequency domain resources where the reference signal is located, time domain resources where the reference signal is located, sequence resources used by the reference signal, beam resources used by the reference signal, precoding matrix resources used by the reference signal, reference signal resource index where the reference signal is located, beam resources used by the reference signal, quasi-co-positional relationships between participating signals;

[0342] The reference signal is sent by the first communication node.

[0343] And / or the reference signal is received by the first communication node.

[0344] In this embodiment of the invention, the determined receiving method satisfies at least one of the following features:

[0345] When the transmission time interval between the control channel and the data channel is less than a predetermined threshold, the reception mode of the control channel is determined according to the reception mode of the data channel;

[0346] The receiving method of the control channel remains unchanged after the receiving method of the data channel changes, until a new notification signaling is received.

[0347] When the transmission time interval between the control channel and the fourth type of control channel is less than a predetermined threshold, the reception method of the control channel is determined according to the reception method of the fourth type of control channel.

[0348] The receiving method of the control channel remains unchanged after the receiving method of the fourth type of control channel is changed, until a new notification signaling is received.

[0349] When the control channel belongs to the first type of control channel, the receiving method of the control channel changes according to the receiving method of the data channel;

[0350] When the control channel belongs to the third type of control channel, the receiving method of the control channel changes according to the receiving method of the data channel;

[0351] When the control channel belongs to the second type of control channel, the receiving method of the control channel does not change according to the receiving method of the data channel.

[0352] In this embodiment of the invention, the different types of control channels are distinguished based on at least one of the following characteristics:

[0353] The control information type carried by the control channel;

[0354] The number of time-domain symbols occupied by the control channel;

[0355] The number of frequency domain resources used by the control channel;

[0356] The number of transmission methods used by the control channel;

[0357] The number of transmission modes used by the control channel.

[0358] In this embodiment of the invention, the second determining device further includes: a sending unit; wherein,

[0359] The sending unit is configured to send signaling information to the first communication node, the signaling information including at least one of the following:

[0360] The signaling information includes information on whether the reception method of the control channel changes according to the reception method of the data channel;

[0361] The signaling information includes information on whether the reception method of the control channel has changed according to the reception method of the fourth type of control channel;

[0362] The signaling information includes information on whether the transmission method of the control channel changes according to the transmission method of the data channel;

[0363] The signaling information includes information on whether the transmission method of the control channel has changed according to the transmission method of the fourth type of control channel;

[0364] The receiving mode of the control channel changes only within a time window according to the receiving mode of the data channel or the fourth type of control channel. Outside the time window, the receiving mode of the control channel reverts to the original receiving mode.

[0365] By employing the technical solution of this invention, a determined control channel is sent to the second communication node according to a determined transmission method, which can reduce the signaling notification overhead of control channel resources and improve resource utilization. Attached Figure Description

[0366] Figure 1 This is a flowchart illustrating the control channel transmission method according to an embodiment of the present invention.

[0367] Figures 2a to 2h These are various schematic diagrams illustrating the uplink control channel region structure according to embodiments of the present invention;

[0368] Figure 2I This is a schematic diagram of the downlink control channel region structure in an embodiment of the present invention;

[0369] Figure 3a This is a schematic diagram showing multiple UCCEs located in different time domain symbols;

[0370] Figure 3b This is a schematic diagram showing multiple UCCEs located at different frequency domain positions within the same time domain symbol;

[0371] Figure 4a This is a diagram showing that the demodulation reference signal ports of PUCCH and PUSCH are orthogonal. Figure 1 ;

[0372] Figure 4b This is a schematic diagram showing that the demodulation reference signal ports of PUCCH and PUSCH are orthogonal.

[0373] Figure 4c This is a schematic diagram showing that the demodulation reference signal port of PUCCH and the demodulation reference signal port of PUSCH are orthogonal.

[0374] Figure 4d This is a schematic diagram showing that the demodulation reference signal ports of PUCCH and PUSCH are orthogonal.

[0375] Figure 4e This is a schematic diagram showing that the demodulation reference signal ports of PUCCH and PUSCH are orthogonal;

[0376] Figure 4f This is a schematic diagram showing the time and frequency resources occupied by PUCCH and PUSCH;

[0377] Figure 5a This is a diagram illustrating the mapping relationship between downlink physical channel resources and uplink control channel resources. Figure 1 ;

[0378] Figure 5b This is an example diagram of an uplink PRB that includes multiple uplink control channel resource groups;

[0379] Figure 5c This is an example diagram of an uplink PRB that includes multiple orthogonal or non-orthogonal demodulation reference signal ports.

[0380] Figure 5d This is a schematic diagram (2) showing the mapping relationship between downlink physical channel resources and uplink control channel resources;

[0381] Figure 5e This is a schematic diagram (3) showing the mapping relationship between downlink physical channel resources and uplink control channel resources;

[0382] Figure 5f This is a schematic diagram (4) showing the mapping relationship between downlink physical channel resources and uplink control channel resources;

[0383] Figure 6 This is a schematic diagram illustrating the mapping relationship between downlink control channel resources and uplink control channel resources;

[0384] Figure 7a This is a schematic diagram of the uplink control channel first mapped in the frequency domain and then in the time domain. Figure 1 ;

[0385] Figure 7b This is a schematic diagram of the uplink control channel first mapped in the frequency domain and then in the time domain (Figure 2).

[0386] Figure 7c This is a schematic diagram (3) showing the uplink control channel first mapped in the frequency domain and then in the time domain;

[0387] Figure 7d This is a schematic diagram (4) showing the uplink control channel first mapped in the frequency domain and then in the time domain;

[0388] Figure 8a This is a diagram illustrating the division of multiple time-domain symbols into multiple sub-units, with each sub-unit having a demodulation reference signal. Figure 1 ;

[0389] Figure 8b This is a schematic diagram (2) showing how multiple time-domain symbols are divided into multiple sub-units, and each sub-unit has a demodulation reference signal;

[0390] Figure 8c This is a schematic diagram (3) showing how multiple time-domain symbols are divided into multiple sub-units, and each sub-unit has a demodulation reference signal;

[0391] Figure 8d This is a schematic diagram (4) showing how multiple time-domain symbols are divided into multiple sub-units, and each sub-unit has a demodulation reference signal;

[0392] Figure 9 This is a flowchart illustrating the control channel receiving method according to an embodiment of the present invention.

[0393] Figure 10 This is a schematic diagram of the structural composition of the control channel transmitting device according to an embodiment of the present invention;

[0394] Figure 11 This is a schematic diagram of the structural composition of the control channel receiving device according to an embodiment of the present invention;

[0395] Figure 12a This is an example of the first mode of demodulating the reference signal in Example 11. Figure 1 ;

[0396] Figure 12bFigure 2 is an example of the first mode of demodulating the reference signal in Embodiment 11;

[0397] Figure 12c This is a schematic diagram of the multiplexing method of UCCE and PUCCH of terminals occupying different numbers of UCCE in Example 12;

[0398] Figure 13 This is a flowchart illustrating the method for determining the control channel transmission mode according to an embodiment of the present invention. Figure 1 ;

[0399] Figure 14 This is a flowchart illustrating the method for determining the control channel transmission mode according to an embodiment of the present invention.

[0400] Figure 15 This is a flowchart illustrating the method for determining the control channel receiving mode according to an embodiment of the present invention.

[0401] Figure 16 This is a schematic diagram of the structure of the first device for determining the control channel transmission mode according to an embodiment of the present invention;

[0402] Figure 17 This is a schematic diagram of the structure of the second determining device for the control channel receiving method according to an embodiment of the present invention. Detailed Implementation

[0403] To gain a more detailed understanding of the features and technical content of the embodiments of the present invention, the implementation of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and illustration only and are not intended to limit the embodiments of the present invention.

[0404] Figure 1 This is a flowchart illustrating the control channel transmission method according to an embodiment of the present invention. Figure 1 ,like Figure 1 As shown, the method for transmitting the control channel includes:

[0405] Step 101: The first communication node determines the second transmission parameter information related to the control channel based on the first control information and / or the first parameter information.

[0406] Step 102: Send the control channel to the second communication node according to the second transmission parameter information; wherein, the first parameter information includes at least one of the following: demodulation reference signal information corresponding to the first control information, demodulation reference signal information of the data channel corresponding to the control channel, type information of the second control information transmitted on the control channel, and channel coding rate information corresponding to the first control information.

[0407] Here, the first control information is sent from the second communication node to the first communication node, and the second control information is sent from the first communication node to the first communication node, wherein the second control information is on the control channel.

[0408] In this embodiment of the invention, the second transmission parameter information includes at least one of the following: control channel region information, frequency domain resource information occupied by the control channel, time domain symbol information occupied by the control channel, demodulation reference signal information of the control channel, code domain resource occupied by the control channel, and multiplexing mode of multiple second control information.

[0409] In this embodiment of the invention, the first control information is the first control information related to the data channel corresponding to the control channel;

[0410] The data channel and the first control information are received by the first communication node from the second communication node.

[0411] In this embodiment of the invention, the demodulation reference signal information includes at least one of the following:

[0412] The port index information of the demodulation reference signal;

[0413] The sequence index information used in the demodulation reference signal.

[0414] In this embodiment of the invention, the method further includes:

[0415] The resource information corresponding to the control channel is obtained based on the demodulation reference signal information of the data channel and at least one of the following: the frequency domain resources corresponding to the data channel, the index information corresponding to the first control information, and the time unit index information corresponding to the data channel.

[0416] In this embodiment of the invention, the method further includes:

[0417] The second frequency domain resource occupied by the control channel is obtained based on the smallest one or more frequency domain resource indices corresponding to the data channel.

[0418] The second frequency domain resource occupied by the control channel is obtained based on the largest one or more frequency domain resource indices corresponding to the data channel.

[0419] The third resource information of the control channel in the second frequency domain resource is obtained based on the demodulation reference signal information corresponding to the data channel.

[0420] In this embodiment of the invention, the third resource information includes at least one of the following:

[0421] The control channel index in the time-frequency resource group in the second frequency domain resource, wherein the second frequency domain resource includes multiple time-frequency resource groups;

[0422] The code domain resource index of the control channel in the second frequency domain resource;

[0423] The demodulation reference signal resource information corresponding to the control channel.

[0424] In this embodiment of the invention, the method further includes:

[0425] The third transmission parameter information of the control channel is obtained based on the demodulation reference signal information corresponding to the first control information and the index information corresponding to the first control information.

[0426] In this embodiment of the invention, the third transmission parameter information includes at least one of the following resource information: time-domain resources corresponding to the control channel, frequency-domain resources corresponding to the control channel, code resources corresponding to the control channel, and time-frequency code resources corresponding to the demodulation reference signal of the control channel.

[0427] In this embodiment of the invention, the method further includes:

[0428] Other signals are transmitted according to the control channel region information. When there is an intersection between the frequency domain resources allocated to other signals in the current time unit and the frequency domain resources where the control channel region is located, the other signals are not transmitted on the control channel region. The other signals include at least one of the following signals: data channel signal, measurement reference signal, demodulation reference signal, access request signal, and scheduling request signal.

[0429] Alternatively, the resources occupied by the control channel are a subset of the resources occupied by the control channel region, wherein the control channel region can also be referred to as a control channel resource set, wherein a control channel resource can be at least one of the following resources: time domain resources, frequency domain resources, code domain resources. In addition, the resources occupied by the control channel in the control channel region can be notified by dynamic signaling.

[0430] In this embodiment of the invention, the control channel region information includes at least one of the following:

[0431] The number of sub-regions included in the control channel region, frequency domain resource information of each sub-region, and time domain symbol information corresponding to each sub-region.

[0432] In this embodiment of the invention, the control channel region satisfies one of the following characteristics:

[0433] The control channel region occupies both sides of the predetermined bandwidth;

[0434] The larger the number of time-domain symbols corresponding to the sub-region above the predetermined bandwidth, the higher the frequency domain position it occupies. The higher the frequency domain position, the larger the subcarrier number it belongs to.

[0435] The larger the number of symbols corresponding to the sub-region below the predetermined bandwidth, the lower the frequency domain position it occupies. The lower the frequency domain position, the smaller the subcarrier number it belongs to.

[0436] When the sub-region contains N time-domain symbols, the end symbol of the N time-domain symbols is the end symbol of the second transmission domain;

[0437] When the sub-region contains N time-domain symbols, the start symbol of the N time-domain symbols is the start time-domain symbol of the second transmission domain.

[0438] The second transmission domain corresponds to the area where the second communication node receives signals.

[0439] In this embodiment of the invention, the indication information in the first control information that indicates the number of time-domain symbols related to the control channel includes at least one of the following:

[0440] Is the control channel a long-duration or short-duration channel?

[0441] The starting symbol index of the control channel;

[0442] The end symbol index of the control channel;

[0443] The number of time-domain symbols in the control channel;

[0444] The index of the number of time-domain symbols in the control channel within the agreed set of time-domain symbol counts.

[0445] In this embodiment of the invention, when the control channel is obtained to have a long duration, the number of time-domain symbols of the control channel is equal to the number of time-domain symbols of the corresponding transmission domain, wherein the transmission direction of the corresponding transmission domain and the control channel is the same.

[0446] In this embodiment of the invention, the number of time-domain symbols corresponding to the long-duration control channel is different in different time units.

[0447] In this embodiment of the invention, the method further includes at least one of the following:

[0448] The number of time-domain symbols occupied by the control channel is determined based on the type of the second control information transmitted on the control channel, or the number of frequency-domain symbols occupied by the control channel is determined.

[0449] The number of time-domain symbols in the control channel is determined based on the capability level or channel quality level information of the first communication node, or the number of frequency-domain symbols in the control channel is determined; here, the first communication node feeds back the capability level or channel quality level information to the second communication node.

[0450] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate corresponding to the first control information, or the number of frequency-domain symbols occupied by the control channel is determined.

[0451] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate of the first data channel corresponding to the second control information, or the number of frequency-domain symbols occupied by the control channel is determined.

[0452] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate of the second data channel, or the number of frequency-domain symbols occupied by the control channel is determined.

[0453] The different control channel types are distinguished by at least one of the following: whether the control information second control information is CSI information or ACK / NACK information; the information length of the control information second control information; the first data channel is the data channel sent by the first communication node to the first communication node; the second data unit is the data channel sent by the first communication node to the second communication node in the current time unit; and the current time unit is the time unit in which the control channel is located.

[0454] In this embodiment of the invention, multiple second control messages with the same number of time-domain symbols are transmitted using one control channel;

[0455] Multiple second control messages of the same type are transmitted using one control channel.

[0456] The different types of second control information are distinguished by at least one of the following: whether the second control information is CSI information or ACK / NACK information, the information length of the second control information, and the service data type corresponding to the second control information;

[0457] The multiple second control information are multiple second control information that need to be fed back in the current time unit.

[0458] In this embodiment of the invention, the method further includes at least one of the following:

[0459] When multiple second control information that need to be fed back in the current time unit are sent on a control channel, the resource information of the control channel is obtained according to the first control information with the highest time unit index among the multiple first control information related to the multiple second control information;

[0460] When multiple second control information that the current time unit needs to feed back is sent on a control channel, the resource information of the control channel is obtained based on the control channel resource information corresponding to the multiple second control information.

[0461] In this embodiment of the invention, the time-frequency domain position of the demodulation reference signal of the control channel is obtained through one of the following methods:

[0462] The demodulation reference signal is obtained from the first control information as to whether it is on the start symbol or the end symbol of the control channel;

[0463] The first control information is used to determine whether the frequency domain resources occupied by the demodulation reference signal in one time domain symbol are continuous or discrete.

[0464] The relevant parameters of the demodulation reference signal are determined based on the number of time-domain symbols of the control channel;

[0465] The relevant parameters of the demodulation reference signal are determined based on whether the control channel and the second data channel can be code-division multiplexed.

[0466] The relevant parameters of the demodulation reference signal are determined based on the number of transmission method sets.

[0467] The relevant parameters of the demodulation reference signal are determined according to the transmission mode of the control channel, wherein the transmission mode includes: single-layer transmission, transmission diversity mode, and repeated transmission;

[0468] The second data channel is either a data channel sent from the first communication node to the second communication node, or a data channel sent from the third communication node to the second communication node.

[0469] In this embodiment of the invention, the first control information satisfies at least one of the following features:

[0470] The first control information is high-level semi-static control information;

[0471] The first control information is physical layer dynamic control information.

[0472] In this embodiment of the invention, the frequency domain resource information of the control channel is obtained through at least one of the following methods:

[0473] Physical layer dynamic information notification frequency domain resources.

[0474] Here, the frequency domain resources can occupy any one or more frequency domain resources within a predetermined bandwidth. Preferably, the frequency domain resource is a PRB, a sub-band, a CCE (Control channel element), or a REG (resource element group).

[0475] In this embodiment of the invention, the resources occupied by the control channel satisfy the following characteristics:

[0476] The end domain symbol position and start frequency domain resources corresponding to the control channel are obtained, as well as the number of control channel resource units; the multiple control channel resource units are first mapped in the frequency domain and then mapped in the time domain.

[0477] In this embodiment of the invention, the first parameter information further includes the time unit index information of the data channel or the first control information.

[0478] In this embodiment of the invention, the time resource information of the data channel or the first control information includes at least one of the following:

[0479] The data channel or the time unit index information where the first control information is located;

[0480] The data channel or the time-domain symbol index information where the first control information is located;

[0481] The time unit index information where the time domain end position of the data channel or the first control information is located;

[0482] The time-domain symbol index information of the time-domain end position of the data channel or the first control information.

[0483] In this embodiment of the invention, the demodulation reference signal resource information of the second control information is determined based on the CSI information in the first control information.

[0484] In this embodiment of the invention, the CSI information fed back by the first communication node includes the transmission resources corresponding to the first communication node, wherein the transmission resources include one or more of the following resources: transmission beam resources, transmission port resources, transmission precoding matrix resources, transmission time resources, transmission frequency domain resources, and transmission sequence resources.

[0485] In this embodiment of the invention, the first control information satisfies at least one of the following:

[0486] The first control information is common control information; the common control information may be a group common physical downlink control channel (PDCCH);

[0487] The first control information includes control channel resource set information for notifying the current time unit;

[0488] The first control information includes transmission order information for instructing the first communication node to send multiple transmission methods used to transmit the control channel;

[0489] The first control information includes correspondence information between the time domain region of the control channel and multiple transmission methods or sets of transmission methods for transmitting the control channel;

[0490] The first control information includes time-domain and / or frequency-domain resource information corresponding to each of the multiple transmission methods or sets of transmission methods used to send the control channel to the first communication node.

[0491] The first control information includes transmission mode information used to notify the first communication node to send the control channel; the transmission mode information may also be called beam information, or precoding information, or other equivalent names, and does not affect the inventiveness of the present invention.

[0492] The first control information includes control channel format information used to notify the first communication node to send the control channel; different control channels are distinguished by at least one of the following methods: frequency domain spread spectrum method, time domain spread spectrum method, maximum number of bits that can be transmitted information, and multiplexing method among multiple second-type control information.

[0493] The first control information includes information on the modulation scheme used by the first communication node to send the control channel;

[0494] The first control information includes the coding rate information used by the first communication node to send the control channel.

[0495] In this embodiment of the invention, the method further includes:

[0496] The first communication node randomly selects one or more control channel resources from the set of control channel resources and transmits the control channel on the control channel resource.

[0497] Alternatively, the first communication node selects one or more control channel resources from the control channel resource set according to a predetermined rule, and transmits the control channel on the control channel resource; the predetermined rule is the identification information of the first communication node.

[0498] In this embodiment of the invention, the sending method is represented by at least one of the following information:

[0499] First reference signal port set information; when the first reference channel port set includes only one reference signal port, the first reference signal port information is directly notified;

[0500] First reference signal resource index information;

[0501] Time-domain information corresponding to the first reference signal;

[0502] Frequency domain information corresponding to the first reference signal;

[0503] Sequence information corresponding to the first reference signal;

[0504] Send beam logic number information;

[0505] Pre-encoded codewords or codeword sets;

[0506] The quasi-co-positional relationship information between the demodulation reference signal and the second reference signal port of the control channel; the second reference signal port can also be a set of second reference signal ports and / or a second reference signal resource; the quasi-co-positional relationship can be interpreted as: if two reference signals satisfy quasi-co-positional conditions, it means that the channel characteristic parameters of one reference signal can be obtained from the channel characteristic parameters of the two reference signals, wherein the channel characteristic parameters include at least one of the following parameters: delay spread, Doppler spread, Doppler offset, average delay, average gain, average vertical transmission angle, average horizontal transmission angle, average vertical angle of arrival, average horizontal angle of arrival, center vertical transmission angle, center horizontal transmission angle, center vertical angle of arrival, and center horizontal angle of arrival;

[0507] Wherein, the first and second reference signals are reference signals sent by the first communication node.

[0508] And / or the first and second reference signals are reference signals received by the first communication node.

[0509] In this embodiment of the invention, when the first and second reference signals are reference signals received by the first communication node, the first and / or second reference signal information indicates one of the following:

[0510] Information about the transmission method used by the first communication node to send signals;

[0511] The transmission method information used by the first communication node to send the signal and the reception method information used by the receiving end of the signal;

[0512] After the first communication node sends a signal, the receiving method information of the receiving end of the signal;

[0513] The first communication node transmits signals using the transmission method information and receives signals using the reception method information.

[0514] Figure 9 This is a schematic flowchart of the control channel receiving method according to an embodiment of the present invention, as shown in Figure 2. Figure 9 As shown, the method for receiving the control channel includes:

[0515] Step 901: The second communication node sends the first control information and / or the first parameter information to the first communication node.

[0516] Step 902: The second communication node receives the control channel sent by the first communication node according to the second transmission parameter information. The second transmission parameter information is: the second transmission parameter information related to the control channel determined by the first communication node according to the first control information and / or the first parameter information; wherein, the first parameter information includes at least one of the following: demodulation reference signal information corresponding to the first control information, demodulation reference signal information of the data channel corresponding to the control channel, type information of the second control information transmitted on the control channel, and channel coding rate information corresponding to the first control information.

[0517] Here, the first control information is sent from the second communication node to the first communication node, and the second control information is sent from the first communication node to the first communication node, wherein the second control information is on the control channel.

[0518] In this embodiment of the invention, the second transmission parameter information includes at least one of the following: control channel region information, frequency domain resource information occupied by the control channel, time domain symbol information occupied by the control channel, demodulation reference signal information of the control channel, code domain resource occupied by the control channel, and multiplexing mode of multiple second control information.

[0519] In this embodiment of the invention, the first control information is the first control information related to the data channel corresponding to the control channel;

[0520] The data channel and the first control information are received by the first communication node from the second communication node.

[0521] In this embodiment of the invention, the demodulation reference signal information includes at least one of the following:

[0522] The port index information of the demodulation reference signal;

[0523] The sequence index information used in the demodulation reference signal.

[0524] In this embodiment of the invention, the method further includes:

[0525] The resource information corresponding to the control channel is obtained based on the demodulation reference signal information of the data channel and at least one of the following: the frequency domain resources corresponding to the data channel, the index information corresponding to the first control information, and the time unit index information corresponding to the data channel.

[0526] In this embodiment of the invention, the method further includes:

[0527] The second frequency domain resource occupied by the control channel is obtained based on the smallest one or more frequency domain resource indices corresponding to the data channel.

[0528] The second frequency domain resource occupied by the control channel is obtained based on the largest one or more frequency domain resource indices corresponding to the data channel.

[0529] The third resource information of the control channel in the second frequency domain resource is obtained based on the demodulation reference signal information corresponding to the data channel.

[0530] In this embodiment of the invention, the third resource information includes at least one of the following:

[0531] The control channel index in the time-frequency resource group in the second frequency domain resource, wherein the second frequency domain resource includes multiple time-frequency resource groups;

[0532] The code domain resource index of the control channel in the second frequency domain resource;

[0533] The demodulation reference signal resource information corresponding to the control channel.

[0534] In this embodiment of the invention, the method further includes:

[0535] The third transmission parameter information of the control channel is obtained based on the demodulation reference signal information corresponding to the first control information and the index information corresponding to the first control information.

[0536] In this embodiment of the invention, the third transmission parameter information includes at least one of the following resource information: time-domain resources corresponding to the control channel, frequency-domain resources corresponding to the control channel, code resources corresponding to the control channel, and time-frequency code resources corresponding to the demodulation reference signal of the control channel.

[0537] In this embodiment of the invention, the method further includes:

[0538] Other signals are transmitted according to the control channel region information. When there is an intersection between the frequency domain resources allocated to other signals in the current time unit and the frequency domain resources where the control channel region is located, the other signals are not transmitted on the control channel region. The other signals include at least one of the following signals: data channel signal, measurement reference signal, demodulation reference signal, access request signal, and scheduling request signal.

[0539] Alternatively, the resources occupied by the control channel are a subset of the resources occupied by the control channel region, wherein the control channel region can also be referred to as a control channel resource set, wherein a control channel resource can be at least one of the following resources: time domain resources, frequency domain resources, code domain resources. In addition, the resources occupied by the control channel in the control channel region can be notified by dynamic signaling.

[0540] In this embodiment of the invention, the control channel region information includes at least one of the following:

[0541] The number of sub-regions included in the control channel region, frequency domain resource information of each sub-region, and time domain symbol information corresponding to each sub-region.

[0542] In this embodiment of the invention, the control channel region satisfies one of the following characteristics:

[0543] The control channel region occupies both sides of the predetermined bandwidth;

[0544] The larger the number of time-domain symbols corresponding to the sub-region above the predetermined bandwidth, the higher the frequency domain position it occupies. The higher the frequency domain position, the larger the subcarrier number it belongs to.

[0545] The larger the number of symbols corresponding to the sub-region below the predetermined bandwidth, the lower the frequency domain position it occupies. The lower the frequency domain position, the smaller the subcarrier number it belongs to.

[0546] When the sub-region contains N time-domain symbols, the end symbol of the N time-domain symbols is the end symbol of the second transmission domain;

[0547] When the sub-region contains N time-domain symbols, the start symbol of the N time-domain symbols is the start time-domain symbol of the second transmission domain.

[0548] The second transmission domain corresponds to the area where the second communication node receives signals.

[0549] In this embodiment of the invention, the indication information in the first control information that indicates the number of time-domain symbols related to the control channel includes at least one of the following:

[0550] Is the control channel a long-duration or short-duration channel?

[0551] The starting symbol index of the control channel;

[0552] The end symbol index of the control channel;

[0553] The number of time-domain symbols in the control channel;

[0554] The index of the number of time-domain symbols in the control channel within the agreed set of time-domain symbol counts.

[0555] In this embodiment of the invention, when the control channel is obtained to have a long duration, the number of time-domain symbols of the control channel is equal to the number of time-domain symbols of the corresponding transmission domain, wherein the transmission direction of the corresponding transmission domain and the control channel is the same.

[0556] In this embodiment of the invention, the number of time-domain symbols corresponding to the long-duration control channel is different in different time units.

[0557] In this embodiment of the invention, the method further includes at least one of the following:

[0558] The number of time-domain symbols occupied by the control channel is determined based on the type of the second control information transmitted on the control channel, or the number of frequency-domain symbols occupied by the control channel is determined.

[0559] The number of time-domain symbols in the control channel is determined based on the capability level or channel quality level information of the first communication node, or the number of frequency-domain symbols in the control channel is determined; here, the first communication node feeds back the capability level or channel quality level information to the second communication node.

[0560] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate corresponding to the first control information, or the number of frequency-domain symbols occupied by the control channel is determined.

[0561] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate of the first data channel corresponding to the second control information, or the number of frequency-domain symbols occupied by the control channel is determined.

[0562] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate of the second data channel, or the number of frequency-domain symbols occupied by the control channel is determined.

[0563] The different control channel types are distinguished by at least one of the following: whether the control information second control information is CSI information or ACK / NACK information; the information length of the control information second control information; the first data channel is the data channel sent by the first communication node to the first communication node; the second data unit is the data channel sent by the first communication node to the second communication node in the current time unit; and the current time unit is the time unit in which the control channel is located.

[0564] In this embodiment of the invention, multiple second control messages with the same number of time-domain symbols are transmitted using one control channel;

[0565] Multiple second control messages of the same type are transmitted using one control channel.

[0566] The different types of second control information are distinguished by at least one of the following: whether the second control information is CSI information or ACK / NACK information, the information length of the second control information, and the service data type corresponding to the second control information;

[0567] The multiple second control information are multiple second control information that need to be fed back in the current time unit.

[0568] In this embodiment of the invention, the method further includes at least one of the following:

[0569] When multiple second control information that need to be fed back in the current time unit are sent on a control channel, the resource information of the control channel is obtained according to the first control information with the highest time unit index among the multiple first control information related to the multiple second control information;

[0570] When multiple second control information that the current time unit needs to feed back is sent on a control channel, the resource information of the control channel is obtained based on the control channel resource information corresponding to the multiple second control information.

[0571] In this embodiment of the invention, the time-frequency domain position of the demodulation reference signal of the control channel is obtained through one of the following methods:

[0572] The demodulation reference signal is obtained from the first control information as to whether it is on the start symbol or the end symbol of the control channel;

[0573] The first control information is used to determine whether the frequency domain resources occupied by the demodulation reference signal in one time domain symbol are continuous or discrete.

[0574] The relevant parameters of the demodulation reference signal are determined based on the number of time-domain symbols of the control channel;

[0575] The relevant parameters of the demodulation reference signal are determined based on whether the control channel and the second data channel can be code-division multiplexed.

[0576] The relevant parameters of the demodulation reference signal are determined based on the number of transmission method sets.

[0577] The relevant parameters of the demodulation reference signal are determined according to the transmission mode of the control channel, wherein the transmission mode includes: single-layer transmission, transmission diversity mode, and repeated transmission;

[0578] The second data channel is either a data channel sent from the first communication node to the second communication node, or a data channel sent from the third communication node to the second communication node.

[0579] In this embodiment of the invention, the first control information satisfies at least one of the following features:

[0580] The first control information is high-level semi-static control information;

[0581] The first control information is physical layer dynamic control information.

[0582] In this embodiment of the invention, the frequency domain resource information of the control channel is obtained through at least one of the following methods:

[0583] Physical layer dynamic information notification frequency domain resources.

[0584] Here, the frequency domain resources can occupy any one or more frequency domain resources within a predetermined bandwidth. Preferably, the frequency domain resource is a PRB, a sub-band, a CCE (Control channel element), or a REG (resource element group).

[0585] In this embodiment of the invention, the resources occupied by the control channel satisfy the following characteristics:

[0586] The end domain symbol position and start frequency domain resources corresponding to the control channel are obtained, as well as the number of control channel resource units; the multiple control channel resource units are first mapped in the frequency domain and then mapped in the time domain.

[0587] In this embodiment of the invention, the first parameter information further includes the time unit index information of the data channel or the first control information.

[0588] In this embodiment of the invention, the time resource information of the data channel or the first control information includes at least one of the following:

[0589] The data channel or the time unit index information where the first control information is located;

[0590] The data channel or the time-domain symbol index information where the first control information is located;

[0591] The time unit index information where the time domain end position of the data channel or the first control information is located;

[0592] The time-domain symbol index information of the time-domain end position of the data channel or the first control information.

[0593] In this embodiment of the invention, the demodulation reference signal resource information of the second control information is determined based on the CSI information in the first control information.

[0594] In this embodiment of the invention, the CSI information fed back by the first communication node includes the transmission resources corresponding to the first communication node, wherein the transmission resources include one or more of the following resources: transmission beam resources, transmission port resources, transmission precoding matrix resources, transmission time resources, transmission frequency domain resources, and transmission sequence resources.

[0595] In this embodiment of the invention, the first control information satisfies at least one of the following:

[0596] The first control information is common control information; the common control information may be a group common physical downlink control channel (PDCCH);

[0597] The first control information includes control channel resource set information for notifying the current time unit;

[0598] The first control information includes transmission order information for instructing the first communication node to send multiple transmission methods used to transmit the control channel;

[0599] The first control information includes correspondence information between the time domain region of the control channel and multiple transmission methods or sets of transmission methods for transmitting the control channel;

[0600] The first control information includes time-domain and / or frequency-domain resource information corresponding to each of the multiple transmission methods or sets of transmission methods used to send the control channel to the first communication node.

[0601] The first control information includes transmission mode information used to notify the first communication node to send the control channel; the transmission mode information may also be called beam information, or precoding information, or other equivalent names, and does not affect the inventiveness of the present invention.

[0602] The first control information includes control channel format information used to notify the first communication node to send the control channel; different control channels are distinguished by at least one of the following methods: frequency domain spread spectrum method, time domain spread spectrum method, maximum number of bits that can be transmitted information, and multiplexing method among multiple second-type control information.

[0603] The first control information includes information on the modulation scheme used by the first communication node to send the control channel;

[0604] The first control information includes the coding rate information used by the first communication node to send the control channel.

[0605] In this embodiment of the invention, the method further includes:

[0606] On all resource sets of the control channel resource set, detect the control channel sent by the first communication node;

[0607] According to a predetermined rule, the control channel transmitted by the first communication node is detected on a subset of the control channel resource set; the predetermined rule is the identification information of the first communication node.

[0608] In this embodiment of the invention, the sending method is represented by at least one of the following information:

[0609] First reference signal port set information; when the first reference channel port set includes only one reference signal port, the first reference signal port information is directly notified;

[0610] First reference signal resource index information;

[0611] Time-domain information corresponding to the first reference signal;

[0612] Frequency domain information corresponding to the first reference signal;

[0613] Sequence information corresponding to the first reference signal;

[0614] Send beam logic number information;

[0615] Pre-encoded codewords or codeword sets;

[0616] The quasi-co-positional relationship information between the demodulation reference signal and the second reference signal port of the control channel; the second reference signal port can also be a set of second reference signal ports and / or a second reference signal resource; the quasi-co-positional relationship can be interpreted as: if two reference signals satisfy quasi-co-positional conditions, it means that the channel characteristic parameters of one reference signal can be obtained from the channel characteristic parameters of the two reference signals, wherein the channel characteristic parameters include at least one of the following parameters: delay spread, Doppler spread, Doppler offset, average delay, average gain, average vertical transmission angle, average horizontal transmission angle, average vertical angle of arrival, average horizontal angle of arrival, center vertical transmission angle, center horizontal transmission angle, center vertical angle of arrival, and center horizontal angle of arrival;

[0617] Wherein, the first and second reference signals are reference signals sent by the first communication node.

[0618] And / or the first and second reference signals are reference signals received by the first communication node.

[0619] In this embodiment of the invention, when the first and second reference signals are reference signals received by the first communication node, the first and / or second reference signal information indicates one of the following:

[0620] Information about the transmission method used by the first communication node to send signals;

[0621] The transmission method information used by the first communication node to send the signal and the reception method information used by the receiving end of the signal;

[0622] After the first communication node sends a signal, the receiving method information of the receiving end of the signal;

[0623] The first communication node transmits signals using the transmission method information and receives signals using the reception method information.

[0624] The technical solutions of the embodiments of the present invention will be described in detail below with reference to specific application scenarios.

[0625] Example 1

[0626] This embodiment describes the notification method for uplink control channel area information. The uplink control channel area information serves two purposes: firstly, it is used for resource mapping of the uplink control channel, which is located within the uplink control channel area; secondly, it can also serve as rate matching information for other uplink signals. Specifically, when there is an intersection between the frequency domain resources allocated to other uplink signals in the current time element and the frequency domain resources where the uplink control channel area is located, the other uplink signals are not transmitted in the uplink control channel area. The other uplink signals include at least one of the following signals: uplink data channel signal, uplink measurement reference signal, uplink demodulation reference signal, uplink access request signal, and uplink scheduling request signal.

[0627] The uplink control channel region information includes at least one of the following: the number of sub-regions included in the uplink control channel region, frequency domain resource information related to each sub-region, and time domain symbol information related to each sub-region. The frequency domain resource information related to the sub-region includes the minimum resource index or offset of the frequency domain resource where the sub-region is located, wherein the offset is relative to the upper side of a predetermined bandwidth, or relative to the upper sub-region; the frequency domain resource information related to the sub-region includes the maximum resource index or offset of the frequency domain resource where the sub-region is located, wherein the offset is relative to the lower side of a predetermined bandwidth, or relative to the lower sub-region; wherein the predetermined bandwidth is in the direction from bottom to top according to the subcarrier number from smallest to largest.

[0628] The notification method for the number of time-domain symbols corresponding to each sub-region is as follows: First, it notifies either the long duration or short duration information, and then obtains the specific number of time-domain symbols according to a pre-defined value or rule. For example, the number of time-domain symbols corresponding to long and short durations is fixed, or the number of time-domain symbols for the long duration is the number of uplink transmission domain time-domain symbols included in the current time unit. The number of uplink transmission domain time-domain symbols corresponding to different time units can be different, thus the number of time-domain symbols corresponding to the long duration varies in different time units. The second notification method is for long-duration sub-regions to only notify the long duration, without notifying the specific number of time-domain symbols, while short-duration sub-regions are notified of the specific number of time-domain symbols. The third notification method is to notify the starting time-domain symbol index corresponding to the sub-region, with the default ending symbol being the end symbol of the uplink transmission domain. The fourth notification method is to notify the ending time-domain symbol index corresponding to the sub-region, with the default ending symbol being the start symbol of the uplink transmission domain. The fifth notification method notifies the start time domain symbol index and the number of time domain symbols corresponding to each sub-region. The sixth notification method notifies the end time domain symbol index and the number of time domain symbols corresponding to each sub-region. Preferably, the length set is first fixed or configured at a higher level, and then the length is notified of the element index in the length set.

[0629] The uplink control channel region satisfies at least one of the following characteristics: the uplink control channel region occupies both sides of a predetermined bandwidth; the larger the number of symbols corresponding to the sub-region above the predetermined bandwidth, the higher the frequency domain position it occupies, where a higher frequency domain position indicates a larger subcarrier; the larger the number of symbols corresponding to the sub-region below the predetermined bandwidth, the lower the frequency domain position it occupies, where a higher frequency domain position indicates a larger subcarrier; when the sub-region contains N time domain symbols, the end symbol of the N time domain symbols is the end symbol of the uplink transmission domain; when the sub-region contains N time domain symbols, the start symbol of the N time domain symbols is the start time domain symbol of the uplink transmission domain. Here, the predetermined bandwidth can be the system bandwidth, and it is necessary to confirm whether the center carrier frequency of the narrowband user can change freely.

[0630] Specifically, such as Figures 2a-2g ,in Figure 2a The uplink control channel region is symmetrically located on both sides of the predetermined bandwidth, the uplink control sub-region is located at the end of the uplink transmission domain, and the sub-regions in the uplink control channel region are arranged in order of the number of time-domain symbols. Figure 2b The uplink control channel region is symmetrically located on both sides of the predetermined bandwidth, and the uplink control channel sub-region is located at the beginning of the uplink transmission domain. Figure 2c The uplink control channel sub-region is located at the top, and the uplink control sub-region is located at the end of the uplink transmission domain. Figure 2d The uplink control channel sub-region is located at the bottom, and the uplink control sub-region is located at the end of the uplink transmission domain. Figure 2e The uplink control channel sub-region is located on the upper side, and the uplink control sub-region is located at the beginning of the uplink transmission domain. Figure 2f The uplink control channel sub-region is located on the lower side, and the uplink control sub-region is located at the beginning of the uplink transmission domain. Figure 2g The uplink control channel sub-region is located in the middle.

[0631] In the above 2a-2b, an uplink control channel can symmetrically occupy the frequency domain resources on both the upper and lower sides, or it can occupy only the upper side or the lower side. Preferably, when a control channel occupies only one side of the uplink control region, the uplink control channel region can also be asymmetrical on both the upper and lower sides. For example... Figure 2h As shown, the upper side represents the number of time-domain symbols occupied by the uplink control channel region, which is {14, 7, 2, 1}, and the lower side represents the number of time-domain symbols occupied, which is {1, 2, 14}. The number of sub-regions included in the uplink control channel, the number of time-domain symbols in each sub-region, and the frequency-domain resources in this embodiment are merely examples, and this invention does not exclude other possibilities.

[0632] In this embodiment, the predetermined system bandwidth may be the system bandwidth allocated to the terminal.

[0633] The first method for notifying the uplink control channel area information is through semi-static higher-layer signaling. The second method for notifying the uplink control channel area information is through semi-static notification of multiple sets of control channel area information, followed by physical layer dynamic signaling to notify which of the multiple sets the uplink control channel area information of the current time unit is. The physical layer dynamic signaling can be proprietary control signaling or dynamic common control signaling. The third method for notifying the uplink control channel area information is through semi-static notification, followed by dynamic signaling to notify the uplink control channel area outside the uplink control channel area of ​​the semi-static signaling.

[0634] The above method can also be applied similarly to the downlink control channel. The base station configures the downlink control channel region information through semi-static or dynamic signaling, enabling the terminal to perform blind detection of control signaling within the control channel region and rate matching of the PDSCH region based on the downlink control channel region information. Preferably, the downlink control domain is located in the first few symbols of the downlink transmission domain, and the occupied frequency bandwidth decreases sequentially from front to back, such as... Figure 2IAs shown, preferably, a downlink control channel can occupy resources in multiple sub-regions, while in the transmission of uplink control channels, a single uplink control channel preferably occupies resources in only one sub-region.

[0635] In this example, the uplink control channel region can be referred to as the uplink control resource set, wherein a control channel resource can be at least one of the following resources: time domain resources, frequency domain resources, and code domain resources, wherein the resources occupied by the control channel in the control channel region can be notified by dynamic signaling.

[0636] When the uplink control channel region information is used for uplink control channel resource mapping, preferably the uplink control channel region information is notified in higher-layer signaling, and dynamic signaling indicates the specific resources occupied by the uplink control channel in the uplink control channel region.

[0637] One of the uplink control channels belongs to a region of the uplink control channel. In this case, the number of time-domain symbols of the uplink control channel and the region are the same, or the number of time-domain symbols of the uplink control channel is a subset of the number of time-domain symbols occupied by the region. Similarly, the frequency-domain resources of the uplink control channel and the region are the same, or the frequency-domain resources of the uplink control channel are a subset of the frequency-domain resources occupied by the region.

[0638] Example 2

[0639] In this embodiment, the number of time-domain symbols, frequency-domain resources, or uplink control resources (UCCEs) of the uplink control channel are determined based on the type of uplink control information transmitted on the uplink control channel. One of the UCCEs is the smallest resource unit mapped by the uplink control information. Different uplink control channel types are distinguished by at least one of the following: whether the uplink control information is CSI information or ACK / NACK information; and the information length of the uplink control information. Here, the information length can be the bit length before channel coding or the number of symbols after modulation. Specifically, the information length refers to the number of bits after channel coding, the number of modulation symbols, or the number of bits before channel coding.

[0640] Specifically, assuming the smallest resource mapping unit of the uplink control channel is a UCCE (e.g., a PRB resource on a time-domain symbol, or a PRB resource on an OFDM symbol based on a 15kHz subcarrier spacing), the base station and the terminal agree that when the uplink control information is ACK / NACK, one uplink control channel corresponds to X UCCEs, and when the uplink control information is CSI (wherein the CSI information includes channel measurement-related information), one uplink control channel corresponds to Y UCCEs, where X and Y are natural numbers, preferably two different natural numbers, and X and Y can be agreed values.

[0641] In this embodiment, the number of time-domain symbols or frequency-domain resources of the uplink control channel can be further determined based on the information length of the uplink control information. For example, if it is agreed that Ln modulation symbols can be transmitted in one UCCE, and LN modulation symbols need to be transmitted on one control channel, then the number of UCCEs required by the control channel is...

[0642] In this embodiment, it can be further agreed that the Ln that can be transmitted on a UCCE is different for ACK / NACK type information and for CSI information. Preferably, the Ln corresponding to ACK / NACK type information is less than or equal to the Ln corresponding to CSI information.

[0643] In this embodiment, multiple UCCEs can be composed of multiple frequency domain units located in the same time domain OFDM symbol. Figure 3b This is an example diagram of three UCCEs located in three frequency domain resources; it can also consist of multiple time-domain symbols located in the same frequency domain resource, such as... Figure 3a This diagram illustrates the resource example of three UCCEs across three time-domain symbols. Of course, the multiple UCCEs required for the control channel can also be obtained according to other rules, such as frequency hopping rules.

[0644] In this embodiment, the number of time-domain symbols or frequency-domain resources of the uplink control channel can also be determined based on the capability level. For example, the higher the maximum power level corresponding to the terminal, the smaller the number of time-domain symbols, and / or the higher the maximum power level corresponding to the terminal, the smaller the number of frequency-domain resources. Here, a higher power level indicates a higher maximum power.

[0645] In this embodiment, the number of time-domain symbols or frequency-domain resources of the uplink control channel can also be determined according to the channel quality level. The better the channel quality, the smaller the corresponding number of time-domain symbols, and / or the better the channel quality, the smaller the corresponding number of frequency-domain resources.

[0646] The first method for obtaining channel quality is based on path loss information, such as obtaining corresponding path loss information from the downlink measurement reference signal. The downlink channel quality is then obtained based on this path loss information; the smaller the path loss, the better the channel quality. The smaller the number of time-domain symbols corresponding to the uplink control channel, and / or the smaller the number of frequency-domain resources, the better.

[0647] The second method for obtaining channel quality is based on the CQI information of the downlink channel fed back by the terminal to the base station. The better the CQI quality, the better the corresponding channel quality. The smaller the number of time-domain symbols corresponding to the uplink control channel, and / or the smaller the number of frequency-domain resources.

[0648] The third method for obtaining channel quality is based on the channel coding rate of the downlink second control information corresponding to the downlink data. For example, if the uplink second control information is ACK / NACK information, it corresponds to the acknowledgment of the PDSCH of the downlink data channel. This PDSCH has corresponding DCI information (downlink second control information). The lower the DCI channel coding rate, the worse the channel quality, the more time-domain symbols the uplink control channel corresponds to, and / or the more frequency-domain resources. Alternatively, the channel quality can be determined based on the MCS of the allocated PDSCH.

[0649] The fourth way to obtain the channel quality is that the channel quality can also be sent to the terminal by the base station. For example, the base station obtains the uplink channel quality by measuring the uplink measurement reference signal and feeds it back to the terminal.

[0650] Example 3

[0651] In this embodiment, the uplink control channel and the uplink data channel can be transmitted using MU-MIMO, thereby effectively utilizing the frequency domain fragmentation caused by the short-duration uplink control channel.

[0652] The demodulation reference signal of the uplink data channel and the demodulation reference signal of the uplink control channel can be located on the same time-domain symbol set, or the time-domain symbol position of the demodulation reference signal of the uplink data channel is located in the time-domain symbol set occupied by the uplink control channel, or there is an intersection between the port set of the demodulation reference signal of the uplink data channel and the port set of the demodulation reference signal of the uplink control channel, or the uplink data information is not transmitted on the time-frequency resources occupied by the demodulation reference signal of the uplink control channel. This allows for MU-MIMO transmission between the uplink control channel and the uplink data channel, effectively utilizing fragmentation.

[0653] like Figures 4a-4e As shown, the DMRS ports of PUCCH (i.e., the aforementioned uplink control channel) and PUSCH (i.e., the aforementioned uplink data channel) are orthogonal. Figure 4a In this context, the PUSCH cannot transmit signals on the time-frequency resources occupied by port 1, but it can transmit signals on the resources occupied by the PUCCH, excluding the demodulation reference signal (i.e., port 1 in the diagram). Figure 4b In this configuration, PUCCH cannot transmit information on the resources occupied by port 1, and PUSCH cannot transmit information on the resources occupied by port 0. Preferably, ports 0 and 1 can achieve orthogonality through OCC, such as... Figure 4c As shown, this allows PUSCH and PUCCH to occupy the same time-frequency resources, especially since PUCCH and PUSCH are transmitted via beams, resulting in relatively low correlation interference between them. Or as... Figures 4d to 4e At this time, the uplink control channel is located on the OFDM symbols preceding PUSCH. Figures 4a-4e The resources occupied by the DMRS port are just an example and do not exclude other situations, as long as the ports of PUCCH and PUSCH are orthogonal or pseudo-orthogonal. PUSCH does not transmit signals on the time-frequency resources occupied by the demodulation reference signal of PUCCH. The demodulation reference signal of PUCCH can be the time-frequency resources occupied by the demodulation reference signal of one PUCCH channel, or it can be the demodulation reference signal resources corresponding to all PUCCH channels.

[0654] Or such as Figure 4f As shown, PUCCH and PUSCH can occupy the same time and frequency resources. For example, a PRB can multiplex 6 users through DMRS code division multiplexing, but currently, through implicit or explicit notification, there is a PUCCH user on this PRB. Since the ports of PUCCH and PUSCH are orthogonal, one or more of the remaining 5 unused ports can be allocated to a PUSCH user. Figure 4f The resources occupied by DMRS are just an example and do not exclude other occupation methods, as long as the PUCCH and PUSCH ports can be orthogonal.

[0655] Preferably, the uplink control channel and the uplink data channel belong to different terminals, or the uplink control channel and the uplink data channel belong to the same terminal, but the terminal uses different beams to transmit the control channel and the uplink data channel, thereby reducing mutual interference.

[0656] Example 4

[0657] In this embodiment, the resource information of PUCCH is obtained based on the frequency domain resource information of PDSCH and the demodulation reference information corresponding to PDSCH.

[0658] If the PUCCH transmits ACK / NACK information corresponding to the PDSCH, the frequency domain resource information corresponding to the PUCCH in the uplink transmission domain is obtained based on the maximum or minimum PRB index of the frequency domain resources occupied by the PDSCH.

[0659] Specifically, such as Figure 5a As shown, the PUCCH corresponding to downlink PRB0-2 (hereinafter referred to as DPRB) is on uplink transmission domain PRB0-2 (hereinafter referred to as UPRB). Due to MU-MIMO transmission, DPRB0 may be occupied by multiple users. In this case, multiple users' PUCCHs will be mapped to UPRB0. For multiple PUCCH channels in the same UPRB0, the first way to distinguish them is to obtain the code domain resources of the PUCCH in UPRB0 through the demodulation reference signal port corresponding to the PDSCH. Preferredly, there is a one-to-one correspondence between the demodulation reference signal port of the PDSCH and the code domain resources of UPRB0, or a many-to-one correspondence between the demodulation reference signal port of the PDSCH and the code domain resources of UPRB0. In this case, PUCCHs corresponding to the same code domain resources can only be time-division scheduled. Since the time domain resources of PUCCH can be indicated by the base station, this conflict can be resolved by base station scheduling. Alternatively, there is a one-to-many correspondence between the demodulation reference signal port of the PDSCH and the code domain resources of UPRB0. In this case, a PUCCH channel can be transmitted on multiple code domain resources, such as by using different code domain resources through different antennas.

[0660] The demodulation reference signal port of PDSCH alone may not be enough. In this case, the sequence corresponding to the same demodulation reference signal port is different, similar to port 7 in LTE, which corresponds to nscid=0 and nscid=1. Preferably, the area of ​​demodulation reference signal port information needs to be distinguished by both port index and sequence index. This way, multiple PDSCHs scheduled on multiple DPRB0s can be mapped to multiple PUCCH channels on UPRB0. For example, a correspondence can be established between the demodulation reference signal port and the sequence used by the port and the code domain resources of UPRB0. Specifically, for example, there are DN orthogonal ports used for MU-MIMO, and each orthogonal port corresponds to DM sequences. Multiple sequences corresponding to the same port are pseudo-orthogonal. At this time, it is necessary to establish a correspondence between the demodulation reference signal port resources of DN*DM PDSCHs and the code domain resources of the uplink control channel resources on UPRB0.

[0661] In the above embodiments, multiple PUCCHs in a UPRB0 are only regiond by code division multiplexing. This embodiment does not exclude the possibility that multiple PUCCHs in a UPRB0 are distinguished by time-frequency resources. That is, an uplink PRB resource includes multiple time-frequency resource groups, and each resource group is the smallest resource unit mapped to a PUCCH. In this way, multiple PUCCH resources mapped to the same uplink PRB resource can be further distinguished by different resource groups. Figure 5b As shown, a UPRB0 contains multiple UCCE resources (where one UCCE is the smallest unit of a PUCCH mapping, i.e., the time-frequency resource group; this example does not exclude other equivalent names). Figure 5b The division of time-domain resources for multiple UCCEs within the same uplink resources is just an example and does not exclude other division methods.

[0662] In the above embodiments, multiple PUCCH resources mapped to the same uplink PRB are regionalized using code division or time-frequency resources. This embodiment also does not exclude the possibility that multiple PUCCH resources in the same uplink PRB are distinguished by different demodulation reference signal resources of the PUCCH, such as... Figure 5c As shown, multiple PUCCHs mapped to a UPRB0 are transmitted on different PUCCH demodulation reference signal ports. As long as these PUCCH demodulation reference channels are orthogonal, multiple PUCCHs can occupy the same time-frequency resources. This assumes that the interference between multiple PUCCHs is relatively small, which is also reasonable in beam transmission scenarios.

[0663] In the above embodiments, the frequency domain resources corresponding to the PUCCH are first obtained based on the frequency domain resource information corresponding to the PDSCH. Then, the time-frequency resource index of the PUCCH in the corresponding PRB resources, and / or code domain resources, and / or demodulation reference signal resources are obtained based on the demodulation reference signal resource information corresponding to the PDSCH. In another embodiment, a logical PUCCH resource information is obtained through the frequency domain resources corresponding to the PDSCH and the demodulation reference signal resource information corresponding to the PDSCH. Then, the PUCCH information is obtained based on this logical resource information. Different logical PUCCH resources are distinguished by one or more of the following: frequency domain resources, time-frequency resource groups in the frequency domain resources, code domain resources, and demodulation reference signal port resources. Figure 5d As shown, multiple logical PUCCHs are concentrated in the uplink control channel region.

[0664] In this embodiment, when one PUCCH corresponds to multiple PRB resources, it is necessary to map multiple DPRBs to the same set of UPRBs, such as... Figure 5eAs shown, DPRB0 to DPRB2 correspond to uplink control channel resources U0, and DPRB3 to DPRB5 correspond to uplink control channel resources U1. Alternatively, the mapping relationship from PRB index to UPRB is... First, obtain the starting resource index (or ending resource index) of UPRB, and then determine the other frequency domain resources occupied by PUCCH based on the number of frequency domain resources occupied by UPRB.

[0665] When a PUCCH occupies multiple PRB resources, one implementation is to obtain the starting resource index as described above, and then use multiple consecutive PRBs with the starting index as the frequency domain resources occupied by the PUCCH. Another implementation is to prioritize selecting from the PRBs corresponding to the multiple PRBs occupied by the PUCCH, for example, selecting the PRBs with the smallest corresponding indices. If the number of corresponding PRBs is less than the number of PUCCH PRBs, then the remaining PRBs are searched sequentially starting from the largest corresponding PRB. Figure 5f For example, the PUCCH corresponding to the ACK / NACK of PDSCH is preferentially sent in the uplink transmission domain {PRB0, PRB4, PRB5}. When the PUCCH requires 2 PRBs, it is sent in {PRB0, PRB4}; when it requires 3 PRBs, it is sent in {PRB0, PRB4, PRB5}; and when it requires 6 PRBs, it is sent in {PRB0, PRB4, PRB5, PRB6~8}. The DMRS demodulation reference signal can also determine the offset, such as... Figure 5a As shown, the starting DPRB0 occupied by PDSCH is used to obtain UPRB0. Then, the offset is obtained according to the minimum demodulation reference signal port (or the maximum demodulation reference signal port) used by PDSCH. For example, if the offset is 1, then the starting PRB used by PUCCH is UPRB1.

[0666] Where DPRB is the PRB of the downlink transmission domain and UPRB is the PRB of the uplink transmission domain.

[0667] Alternatively, signaling can indicate whether the frequency offset determined by the DMRS port is the corresponding logical PRB index in the UPRB.

[0668] Similarly, for downlink ACK / NACK, there is a corresponding uplink PUSCH. In this case, the downlink control channel resources corresponding to downlink ACK / NACK can also be obtained through the frequency domain resources corresponding to PUSCH and the demodulation reference signal port information corresponding to PUSCH.

[0669] Example 5

[0670] In this embodiment, if PUCCH is the ACK / NACK information of PDSCH, the mapping of PUCCH resources can be obtained through the index information corresponding to the DCI information (i.e. the first control information) of PDSCH and the demodulation reference signal port information corresponding to the DCI information.

[0671] The first approach is to use the lowest frequency domain index corresponding to the DCI. For example, when the PRB is the smallest resource unit mapped by the DCI, first obtain the frequency domain resource index of the corresponding PUCCH in the uplink transmission domain based on the lowest (or highest) PRB index corresponding to the DCI. Then, obtain the time-frequency resource index, and / or code domain resources, and / or demodulation reference signal resources of the PUCCH in the corresponding PRB resources based on the demodulation reference signal information corresponding to the DCI.

[0672] The second approach uses the CCE index corresponding to the DCI, where the CCE is the smallest mapping unit for DCI information mapping, and the CCE can be a logical index. The uplink PRB resource where the PUCCH resides is obtained based on the CCE index, and then the time-frequency resource index, and / or code domain resource, and / or demodulation reference signal resource of the PUCCH in the corresponding PRB resource are obtained based on the demodulation reference signal information corresponding to the DCI.

[0673] In the above embodiments, the frequency domain resources corresponding to the PUCCH are first obtained based on the index information corresponding to the DCI, and then the time-frequency resource index, and / or code domain resources, and / or demodulation reference signal resources of the PUCCH in the corresponding PRB resources are obtained based on the demodulation reference signal resource information corresponding to the DCI. In another embodiment of this invention, a logical PUCCH resource information is obtained through the index information and demodulation reference signal resource information corresponding to the DCI, and then the PUCCH information is obtained based on this logical resource information. Different logical PUCCH resources are distinguished by one or more of the following: frequency domain resources, time-frequency resource groups in the frequency domain resources, code domain resources, and demodulation reference signal port resources.

[0674] Reference Figure 6For example, in a time unit (specifically, in a slot), there are NC PRB resources or NC CCEs, and each CCE corresponds to NCM demodulation reference signal resources. It is necessary to establish a mapping relationship between NC*NCM downlink resources and PUCCH logical resources. This mapping can be one-to-one or one-to-many. In this case, a downlink resource can be transmitted in multiple uplink transmission resources, such as through transmission diversity or a many-to-one relationship. At this time, multiple downlink resources will have PUCCHs mapped to the same logical PUCCH resource, resulting in a conflict. This conflict can be avoided by base station resource scheduling, such as by time-division multiple conflicting PUCCH resources.

[0675] Example 6

[0676] In Example 4, there may be instances where non-periodic triggered CSI reports no corresponding PDSCH signal, which means that the mapping relationship in Example 4 cannot be applied to the mapping relationship of PUCCH resources for non-periodic triggered CSI.

[0677] The first approach involves semi-statically configuring the PUCCH resources corresponding to non-periodic CSI triggering. Preferably, non-periodic and periodic CSI reporting share the same PUCCH resources. When a conflict arises between non-periodic and periodic CSI reporting within the same time unit, non-periodic CSI reporting takes priority. If the PUCCH corresponding to the CSI conflicts with the PUCCH corresponding to ACK / NACK (i.e., ACK / NACK and CSI need to be reported on the same PUCCH), one approach is to report ACK / NACK and CSI information simultaneously on this PUCCH resource, or to prioritize reporting ACK / NACK.

[0678] The second approach involves obtaining PUCCH resource information for the CSI's PUCCH based on the DCI index corresponding to the triggering signaling, similar to Example 5. The ACK / NACK operation follows the method shown in Example 4. However, this approach also presents a conflict issue where ACK / NACK and CSI information occupy the same PUCCH resources. This can be addressed by time-division multiplexing them through base station scheduling, or by prioritizing ACK / NACK transmission while discarding CSI.

[0679] The third implementation method is to notify PUCCH resources in the non-periodic CSI. In this case, the base station knows which PUCCHs will not be occupied by other users, so it allocates these resources to the non-periodic CSI for reporting, similar to allocating PUSCH resources for non-periodic PUCCH reporting.

[0680] Prioritization is suitable for conflicts between ACK / NACK and CSI from the same user, while base station scheduling is suitable for conflicts between ACK / NACK and CSI from different users. For example, if ACK / NACK is reported by user 1 and CSI is reported by user 2, only base station scheduling can resolve the conflict.

[0681] When the base station needs to provide CSI information to the terminal, a similar method can be used for the downlink control channel for CSI information feedback, or for the downlink PDSCH channel for CSI feedback.

[0682] Example 7

[0683] In this embodiment, the terminal first obtains the end position of the time-domain symbol and the start position of the frequency-domain symbol corresponding to PUCCH, as well as the uplink control channel resource number information UCCEN, where the uplink control channel resource UCCE is the smallest resource unit of the uplink control channel mapping.

[0684] The first method for acquiring resources corresponding to PUCCH is to specify the number of UCCEs (UCCE-OFDM-N) occupied by the PUCCH in each time-domain symbol. When UCCEN is greater than UCCE-OFDM-N, the remaining UCCEs occupy resources in the preceding symbols, meaning the number of time-domain symbols occupied at this time is... like Figure 7a The diagram shows an example of the resources occupied by the PUCCH when UCCEN=4 and UCCE-OFDM-N=3. Figure 7a In the example, UCCE3 occupies the same frequency domain position in the preceding and ending symbols. Figure 7b In this embodiment, UCCE3 occupies the same frequency domain position in the preceding symbols as it does in the following symbols. This embodiment also does not preclude the possibility that UCCE3 might occupy the same position as the maximum frequency domain position at the end of the symbol, such as... Figure 7c As shown. Alternatively, UCCE3 can be mapped to the frequency domain position occupied by the preceding symbol according to a certain frequency hopping principle, for example, it can differ from UCCE2 by an agreed frequency domain resource. Or UCCE3 can be mapped to an agreed frequency domain bandwidth, where the agreed frequency domain bandwidth is notified through semi-static signaling.

[0685] The second method for obtaining the resources corresponding to PUCCH is to first perform frequency domain resource mapping on the end symbol. If the mapping is to the top of the predetermined system bandwidth, then mapping is performed from the bottom of the predetermined bandwidth of the preceding symbols. For example... Figure 7d As shown.

[0686] In the above implementation, the signaling notifies the PUCCH of the frequency domain start position and the time domain end position, or the time domain end position is defaulted to the end position of the uplink transmission domain.

[0687] The number of UCCEs occupied by a PUCCH can be determined in two ways: firstly, through dynamic signaling notification, and secondly, through semi-static notification of the set of UCCEs to which the UCCE belongs, such as {1, 4, 8, 16}. Then, the dynamic signaling notification indicates the index of the UCCE within this set; for example, an index of 1 corresponds to UCCE 4. Another method for obtaining the number of UCCEs a PUCCH can occupy is similar to the method in Example 2. That is, the number of UCCEs corresponding to a PUCCH is determined based on the type of second control information transmitted on the control channel.

[0688] In this embodiment, a UCCE can be composed of a time-domain symbol and occupy one or more PRB resources in the frequency domain, or the frequency domain can be composed of a frequency domain group in a PRB.

[0689] In this embodiment, the last time-domain symbol position and the starting frequency-domain position are notified. In another embodiment, the starting time-domain symbol position and / or the starting frequency-domain position are notified. When multiple UCCEs cannot be carried on the notified symbol, they are placed on the subsequent symbols.

[0690] Example 8

[0691] In this embodiment, the base station determines a demodulation reference signal based on the CSI information fed back by the first communication node (e.g., a terminal), and transmits a signal to the first communication node using the determined demodulation reference signal. The transmitted signal satisfies one or more of the following characteristics: the transmitted signal is a data signal, and the demodulation reference signal is a data channel demodulation reference signal; the transmitted signal is a control signal, and the demodulation reference signal is a control channel demodulation reference signal; the CSI information fed back by the first communication node (e.g., the terminal) includes the transmission resources corresponding to the first communication node, wherein the transmission resources include one or more of the following resources: transmission beam resources, transmission port resources, transmission precoding matrix resources, transmission time resources, transmission frequency domain resources, and transmission sequence resources. The base station and the terminal agree on a correspondence between the transmission resources and the demodulation reference signal ports, and the correspondence satisfies one or more of the following characteristics: there is a one-to-one correspondence between the transmission resources and the demodulation reference ports; there is a one-to-one correspondence between the transmission resources and the set of demodulation reference ports; multiple transmission resources correspond to the same demodulation reference port.

[0692] The CSI information fed back by the first communication node may also include channel rank information (RI, RankIndication), and there is a correspondence between the number of demodulation reference signal ports and the RI.

[0693] In this example, the demodulation reference signal information of the downlink control channel (or downlink data channel) is determined based on the transmission mode information fed back by the terminal. The transmission mode refers to the information of the relevant downlink transmission beam. Different transmission modes are distinguished by at least one of the following: transmission beam, measurement reference signal port information, time-domain resources where the measurement reference signal is located, frequency-domain resources where the measurement reference signal is located, and sequence resources used by the measurement reference signal. For example, the transmission mode can be logically numbered using at least one of the above information. In this embodiment, the transmission mode can also be determined by establishing a quasi-co-location relationship (QCL) between different reference signals. For example, the transmission mode used by the terminal can be determined based on the measurement reference signal port, i.e., establishing a quasi-co-location relationship between the demodulation reference signal of the control channel and the measurement reference signal. The measurement reference signal can be a downlink measurement reference signal, in which case the transmission beam of the control channel is obtained using reciprocity; or it can be an uplink measurement reference signal, in which case the transmission beam of the control channel and the transmission beam of the uplink measurement reference signal are...

[0694] Example 9

[0695] In this embodiment, when the PUCCH occupies more than one time-domain symbol, the demodulation reference signal of the PUCCH satisfies the following characteristics: the multiple time-domain symbols are divided into multiple time-domain units, each time-domain unit carries the demodulation reference signal of the demodulation time-domain unit, and the demodulation reference signals of different time-domain units cannot be interpolated with each other.

[0696] Specifically, the PUCCH occupies X9 time-domain symbols, where X9 is a natural number greater than 1. These X9 time-domain symbols are then divided into Y9 sub-time-domain units, each of which contains at most... A time-domain symbol, where Y9 is a natural number less than or equal to X9.

[0697] Specifically, such as Figures 8a-8b As shown, the PUCCH occupies 4 OFDM symbols, each symbol being a sub-time unit. Therefore, each OFDM symbol has a demodulation reference signal. The demodulation reference signal on each symbol can only be used for demodulating the second control information of that unit and cannot be used for demodulating the second control information of other symbols. This allows the first communication node to transmit the second control information on different symbols using different transmission methods (such as transmission beams). Transmission diversity or repetitive transmission can be used, meaning that the signal on each time unit transmits the complete second control information. Figures 8a-8b The pattern occupied by the demodulation reference signal is just an example, and this embodiment does not exclude other pattern methods.

[0698] Or such as Figures 8c-8dThe PUCCH, occupying 4 OFDM symbols, is divided into 2 sub-time units. Two consecutive time-domain symbols constitute one sub-time unit, such as... Figures 8c-8d The pattern occupied by the demodulation reference signal is just an example, and this embodiment does not exclude other pattern methods.

[0699] Figures 8a-8d The method of dividing sub-time units in this example is only an example and does not exclude other implementation methods.

[0700] Specifically, the number of sub-time units should be determined in three ways: one is fixed, one is signaling notification, and the other is determined based on the number of transmission beam sets used for transmitting PUCCH as agreed upon by the base station and the terminal. The number of transmission beam sets used for transmitting PUCCH as agreed upon by the base station and the terminal is the Y9 value.

[0701] By adopting the demodulation reference signal mode described above, it is possible to allow different transmitting beams of the terminal and different receiving beams of the base station in different sub-time units.

[0702] Example 10

[0703] In this example, when the PUCCH has more than one time-domain symbol, its demodulation reference signal has two modes.

[0704] The first mode is as follows Figures 12a-12b As shown in Example 9, multiple time-domain symbols of a PUCCH share a single demodulation reference signal resource, instead of dividing its time into multiple sub-time units. This means that one demodulation reference signal can be used to decode control information on all time-domain symbols corresponding to a PUCCH. Figures 12a-12b The demodulation reference signal pattern described herein is merely an example and does not exclude other demodulation reference signal patterns.

[0705] The second mode, as shown in Example 9, involves making the demodulation reference signals of the multiple sub-time units of the PUCCH independent of each other.

[0706] For the two pattern modes of the demodulation reference signal, the first method is to indicate which mode should be used through base station signaling (dynamic signaling and / or semi-static signaling). The second method is based on the number of time-domain symbols occupied by the PUCCH; if the number of time-domain symbols is less than a predetermined threshold, the second mode is used; otherwise, the first mode is used. The third method is for the terminal to determine which mode to use based on the transmission mode of its PUCCH transmission. If transmission diversity or repeated transmission is used, the second transmission mode is used; otherwise, the first transmission mode is used. The third method is based on the number of transmit beam sets used by the terminal to transmit the PUCCH; if the number of transmit beams is 1, the first mode is used; otherwise, the second mode is used.

[0707] The first mode allows the terminal's transmit beam to remain unchanged on a PUCCH, and the base station's receive beam to remain unchanged as well.

[0708] Example 11

[0709] In this example, the resources of the PUCCH are determined based on the time-domain resources of the downlink PDSCH, wherein the resources of the PUCCH include: time-domain resources, frequency-domain resources, and code-domain resources.

[0710] For example, PUCCH resources are determined based on the end domain resources of PDSCH, wherein the end domain resources of PDSCH include the time unit index information corresponding to the end domain resources, and / or the time domain symbol index information corresponding to the end domain resources in the time unit.

[0711] Example 12

[0712] In this embodiment, the PUCCH is divided into multiple control channel resource units, wherein each control resource unit consists of X12 time-domain symbols and Y12 subcarriers. Preferably, X12 = 1, and Y12 is the number of subcarriers included in a PRB or a fixed number of PRBs.

[0713] Each control channel resource unit includes multiple DMRS ports, which are orthogonal or pseudo-orthogonal through sequence, allowing different users to occupy different numbers of control resource units. Moreover, they can achieve orthogonality or pseudo-orthogonality through the DMRS ports, thus enabling multiplexing between terminals with different numbers of control channel resources.

[0714] like Figure 12c As stated above, assuming X12 = 1, Y12 is the number of subcarriers occupied by one PRB, such as Figure 12c There are a total of 10 Control Channel Resource Elements (UCCEs): UCCE0 to UCCE9. Since each UCCE has multiple orthogonal DMRS ports, Terminal 1 can occupy the time-frequency resources in UCCE0 to UCCE9, and occupies the first DMRS port in each UCCE. Terminal 2 can occupy any one or more control channel resources in UCCE0 to UCCE9, but occupies the second DMRS port in each UCCE it occupies. Because the first and second DMRS ports are orthogonal, the PUCCH of Terminal 1 and the PUCCH of Terminal 2 are orthogonal. Preferably, the DMRS ports in each UCCE achieve orthogonality through code division.

[0715] Figure 12c The specific number of UCCEs, X12 and Y12, are just examples and do not exclude other possible numbers.

[0716] Example 13

[0717] In this embodiment, the second communication node sends first control information to the second communication node, wherein the first control information includes the transmission method used by the second communication node to send the control channel.

[0718] The different transmission methods are distinguished by at least one of the following: transmission beam, transmission precoding information, transmission time, and transmission frequency domain resources.

[0719] Specifically, the first control information notifies the first communication node of the transmission method information used to send the control channel, and it satisfies at least one of the following characteristics:

[0720] The first control information includes the codebook index information used to notify the control channel, such as the PMI used by the base station to notify the terminal to send uplink control information.

[0721] The first control information includes measurement reference signal information, and the transmission method information used to send the control information is obtained based on the measurement reference signal port information. The measurement reference information includes at least one of the following: measurement reference set information; measurement reference signal resource index information; time-domain information corresponding to the measurement reference signal; frequency-domain information corresponding to the measurement reference signal; and sequence information corresponding to the measurement reference signal. The measurement reference signal is either previously sent from the first communication node to the second communication node, or the measurement reference signal is previously sent from the second communication node to the first communication node. For example, the base station (second communication node) notifies the terminal (first communication node) of the SRS resource ID and / or SRS port information via the first control information, wherein the terminal previously (or within the same time unit as the control channel) sent the SRS resource and / or SRS port to the base station. The terminal uses the precoding or beamforming corresponding to the SRS resource and / or SRS port to send uplink control information to the base station. The base station may also send downlink reference signal resources and / or downlink reference signal ports to the terminal in the first control information, enabling the terminal to send control information to the base station using the transmit beam corresponding to the downlink reference signal resources and / or downlink reference signal ports. For example, if uplink and downlink reciprocity exists on the terminal side, the terminal can obtain the uplink transmit beam for transmitting the uplink control channel based on the receive beam of the downlink reference signal. The downlink reference signal includes a downlink measurement reference signal and / or a downlink demodulation reference signal.

[0722] The first control information notifies the logical beam information, wherein different logical beams are distinguished by at least one of the following information: the distinguishing features of beams with different logical numbers include at least one of the following features: reference signal port information, reference signal resource information, time domain information of the reference signal, frequency domain information of the reference signal, and sequence information corresponding to the reference signal.

[0723] When the logical number of the beam includes the time-domain information of the signal, the logical beam corresponding to a reference signal port is different depending on the time-domain region it is located in.

[0724] When the logical number of the beam includes the frequency domain information of the signal, the logical beams corresponding to different frequency domain regions of a reference signal port are different.

[0725] The base station may send the first control information in at least one of the following ways: higher-layer signaling (such as RRC signaling, MAC CE signaling), physical layer dynamic signaling.

[0726] In this embodiment, the terminal may need to send PUCCH to the base station using multiple transmission methods (or sets of transmission methods). The base station needs to notify the correspondence between the multiple transmission methods (or sets of transmission methods) and the control channel time-domain resources. Preferably, these multiple transmission methods (or sets of transmission methods) can only be generated by the terminal in a time-division manner. The first method of notifying the correspondence only notifies the order of transmission methods. The time-domain resources occupied by each transmission method are according to an agreed rule, such as dividing the control channel time-domain resources proportionally according to the number of transmission methods (or sets of transmission methods). For example, if the terminal needs to send PUCCH on 4 slots and needs to use 2 transmission methods (or sets of 2 transmission methods), the base station notifies the terminal to use transmission method 1 (or the first set of transmission methods) for the first 2 slots and transmission method 2 (or the second set of transmission methods) for the last 2 slots. The correspondence between transmission methods and slots described in this embodiment is just an example and does not exclude other relationships. Of course, in this embodiment, the PUCCH resources can also be on multiple time-domain symbols in one slot, and the base station notifies the time-domain resources of the PUCCH corresponding to each transmission method. Figures 8c-8d The PUCCH, with a length of 4 time-domain symbols, is divided into two time-domain regions, each corresponding to a transmission beam (or set of transmission beams). The second notification method for this correspondence is that the base station notifies the terminal of the uplink control channel resources corresponding to each transmission mode (set of transmission modes), and then notifies these multiple uplink control channel resources that they represent a repeated transmission of an uplink control message.

[0727] The above describes multiple transmission methods that are time-division multiplexing. Of course, this embodiment does not exclude the possibility that the multiple transmission methods are frequency-division multiplexing. The base station notifies the correspondence between multiple transmission methods and multiple frequency domain resources in a similar manner.

[0728] Example 14

[0729] In this embodiment, the base station notifies the uplink control channel resource set information through physical layer common signaling, so that the terminal can randomly or according to a predetermined rule select one or more resource sets in the uplink control channel resource set to send the control channel.

[0730] For example, a base station may send a beam recovery request or resource request information via public signaling to select one or more uplink control channel resources that are not currently occupied in the current time unit. Alternatively, a terminal requesting resources may randomly select one or more uplink control channel resources from the set of idle uplink control channel resources to send the beam recovery request or resource request information. Or, other bursty request information may be sent on the selected resource.

[0731] Alternatively, the terminal may select one or more uplink control resources from the set of idle uplink control channel resources according to predetermined rules and send the beam recovery request or resource request information. Alternatively, it may send other burst request information on the selected resource.

[0732] The physical layer common control signaling can be either cell-specific control signaling or group common control signaling.

[0733] Preferably, the terminal can only select uplink control channel resources from the set of idle control channel resources for reporting within a predetermined time unit. It cannot select resources outside the predetermined time unit. The predetermined time unit can be agreed upon beforehand between the base station and the terminal, or notified to the terminal via control signaling. For example, the predetermined time unit can be a time unit that meets a certain periodicity. Since the request information is sudden, the terminal only selects the control channel resource within the predetermined time unit when there is a sudden request demand.

[0734] One of the control channel resources includes at least one of the following resources: time domain resources, frequency domain resources, code domain resources, and transmit beam resources.

[0735] In this embodiment, the terminal may also send other control information, such as ACK / NACK, CSI information, etc., on the selected uplink control channel resource.

[0736] In this embodiment, one way the common control channel notifies the uplink control channel resource set is to notify the uplink control channel resource pool, for example, by logically numbering the available uplink control channel resources in the current time unit from 0 to N, and by notifying K in the common control channel, and agreeing with the terminal that the uplink control channel resource set consists of control channel resources with logical numbers {K, K+1, ..., N}.

[0737] Example 15

[0738] In this embodiment, the base station notifies the uplink control channel resources through two levels of signaling. The first level of signaling notifies the time unit (or set of time units) where the uplink control channel is located, and the second level of control signaling notifies the specific time domain, and / or frequency domain, and / or code domain resources occupied by the uplink control channel in the notified time unit.

[0739] Specifically, the uplink control channel is used to transmit CSI information, which is transmitted periodically or half-periodically. For example, the terminal transmits the CSI information every 5 slots (this is notified in the first-level signaling information, preferably the first-level signaling information can be higher-layer signaling information). The terminal detects the PDCCH in each slot unit that needs to transmit, and notifies the PUCCH resources occupied by transmitting CSI information in the PDCCH. The PDCCH can be a dedicated PDCCH or a group PDCCH, in which multiple terminals are notified of PUCCH resources in the group PDCCH, similar to the way TPC commands are notified in DCI format 3 / DCI format 3A in LTE.

[0740] Alternatively, for example, when sending ACK / NACK on the PUCCH, the control signaling notifying the PDSCH (the first-level control signaling) notifies the time unit where the PUCCH is located. Then, in the control signaling within the notified time unit (the second-level control signaling), the specific resources occupied by the PUCCH are notified, where the resources include at least one of the following: time-domain resources, frequency-domain resources, and code-domain resources. The second control signaling can be common control signaling or proprietary control information.

[0741] Example 16

[0742] In this embodiment, the base station (the second communication node) notifies the terminal (the first communication node) of the control channel format information used to send the control channel in dynamic control signaling. The control channel format information is distinguished by at least one of the following methods: time-domain spreading method, frequency-domain spreading method, maximum number of bits that can be transmitted, multiplexing method among multiple types of second-class control information, and the type of second-class control information that can be carried on the control channel, similar to PUCCH format 1 / format1a / format1b / format2a / format2b / format3 / format4 in LTE.

[0743] Example 17

[0744] In this embodiment, the base station (the second communication node) notifies the terminal (the first communication node) in the first control information of the modulation scheme and / or coding rate of the control channel used to transmit the control channel. The first control information may be at least one of the following signaling types: RRC signaling, MAC CE signaling, or physical dynamic signaling.

[0745] Example 18

[0746] In this embodiment, the base station notifies the terminal of an SRS port group (and / or an SRS resource group). Different transmit beams corresponding to different SRS ports in the SRS port group have the same receive beam reaching the base station. The terminal can freely select the transmit beam corresponding to one of the SRS ports in the SRS group. For example, the transmit beam information of the uplink control channel includes an SRS port group. The terminal selects one or more transmit beams corresponding to ports in the SRS group to transmit the uplink control channel. Optionally, the SRS port group can be associated with a downlink reference signal port or a downlink reference signal resource. The terminal can select one or more transmit beams corresponding to ports in the SRS group to transmit the uplink control channel based on the receive beam response of the downlink reference signal.

[0747] Example 19

[0748] In this embodiment, the base station notifies the uplink transmission beam information via a downlink reference signal. The terminal can then implement the following methods:

[0749] Implementation method 1: After the terminal obtains the uplink transmission beam based on the downlink reference signal reception beam in the first time unit, it keeps the uplink transmission beam unchanged.

[0750] Implementation Method 2: After the terminal obtains the uplink transmission beam based on the downlink reference signal reception beam in the first time unit, it changes the uplink transmission beam based on the downlink reference signal reception beam in the second time unit, wherein the base station transmits the downlink reference signal in both the first and second time units.

[0751] In various embodiments of the present invention, the uplink control channel is PUCCH (or other equivalent name), the uplink second control information is UCI (or other equivalent name), and the downlink control channel is PDCCH (or the control channel for downlink feedback CSI).

[0752] The uplink control channel transmission methods described in the various specific embodiments of this invention can also be used for downlink control channel transmission.

[0753] Figure 10 This is a schematic diagram of the structural composition of the control channel transmitting device according to an embodiment of the present invention, applied to a first communication node, such as... Figure 10 As shown, the device includes:

[0754] The determining unit 1001 is used to determine the second transmission parameter information related to the control channel based on the first control information and / or the first parameter information;

[0755] The sending unit 1002 is used to send the control channel to the second communication node according to the second transmission parameter information;

[0756] The first parameter information includes at least one of the following: demodulation reference signal information corresponding to the first control information, demodulation reference signal information of the data channel corresponding to the control channel, type information of the second control information transmitted on the control channel, and channel coding rate information corresponding to the first control information.

[0757] Here, the first control information is sent from the second communication node to the first communication node, and the second control information is sent from the first communication node to the first communication node, wherein the second control information is on the control channel.

[0758] In this embodiment of the invention, the second transmission parameter information includes at least one of the following: control channel region information, frequency domain resource information occupied by the control channel, time domain symbol information occupied by the control channel, demodulation reference signal information of the control channel, code domain resource occupied by the control channel, and multiplexing mode of multiple second control information.

[0759] In this embodiment of the invention, the first control information is the first control information related to the data channel corresponding to the control channel;

[0760] The data channel and the first control information are received by the first communication node from the second communication node.

[0761] In this embodiment of the invention, the demodulation reference signal information includes at least one of the following:

[0762] The port index information of the demodulation reference signal;

[0763] The sequence index information used in the demodulation reference signal.

[0764] In this embodiment of the invention, the method further includes:

[0765] The resource information corresponding to the control channel is obtained based on the demodulation reference signal information of the data channel and at least one of the following: the frequency domain resources corresponding to the data channel, the index information corresponding to the first control information, and the time unit index information corresponding to the data channel.

[0766] In this embodiment of the invention, the method further includes:

[0767] The second frequency domain resource occupied by the control channel is obtained based on the smallest one or more frequency domain resource indices corresponding to the data channel.

[0768] The second frequency domain resource occupied by the control channel is obtained based on the largest one or more frequency domain resource indices corresponding to the data channel.

[0769] The third resource information of the control channel in the second frequency domain resource is obtained based on the demodulation reference signal information corresponding to the data channel.

[0770] In this embodiment of the invention, the third resource information includes at least one of the following:

[0771] The control channel index in the time-frequency resource group in the second frequency domain resource, wherein the second frequency domain resource includes multiple time-frequency resource groups;

[0772] The code domain resource index of the control channel in the second frequency domain resource;

[0773] The demodulation reference signal resource information corresponding to the control channel.

[0774] In this embodiment of the invention, the method further includes:

[0775] The third transmission parameter information of the control channel is obtained based on the demodulation reference signal information corresponding to the first control information and the index information corresponding to the first control information.

[0776] In this embodiment of the invention, the third transmission parameter information includes at least one of the following resource information: time-domain resources corresponding to the control channel, frequency-domain resources corresponding to the control channel, code resources corresponding to the control channel, and time-frequency code resources corresponding to the demodulation reference signal of the control channel.

[0777] In this embodiment of the invention, the method further includes:

[0778] Other signals are transmitted according to the control channel region information. When there is an intersection between the frequency domain resources allocated to other signals in the current time unit and the frequency domain resources where the control channel region is located, the other signals are not transmitted on the control channel region. The other signals include at least one of the following signals: data channel signal, measurement reference signal, demodulation reference signal, access request signal, and scheduling request signal.

[0779] Alternatively, the resources occupied by the control channel are a subset of the resources occupied by the control channel region.

[0780] In this embodiment of the invention, the control channel region information includes at least one of the following:

[0781] The number of sub-regions included in the control channel region, frequency domain resource information of each sub-region, and time domain symbol information corresponding to each sub-region.

[0782] In this embodiment of the invention, the control channel region satisfies one of the following characteristics:

[0783] The control channel region occupies both sides of the predetermined bandwidth;

[0784] The larger the number of time-domain symbols corresponding to the sub-region above the predetermined bandwidth, the higher the frequency domain position it occupies. The higher the frequency domain position, the larger the subcarrier number it belongs to.

[0785] The larger the number of symbols corresponding to the sub-region below the predetermined bandwidth, the lower the frequency domain position it occupies. The lower the frequency domain position, the smaller the subcarrier number it belongs to.

[0786] When the sub-region contains N time-domain symbols, the end symbol of the N time-domain symbols is the end symbol of the second transmission domain;

[0787] When the sub-region contains N time-domain symbols, the start symbol of the N time-domain symbols is the start time-domain symbol of the second transmission domain.

[0788] The second transmission domain corresponds to the area where the second communication node receives signals.

[0789] In this embodiment of the invention, the indication information in the first control information that indicates the number of time-domain symbols related to the control channel includes at least one of the following:

[0790] Is the control channel a long-duration or short-duration channel?

[0791] The starting symbol index of the control channel;

[0792] The end symbol index of the control channel;

[0793] The number of time-domain symbols in the control channel;

[0794] The index of the number of time-domain symbols in the control channel within the agreed set of time-domain symbol counts.

[0795] In this embodiment of the invention, when the control channel is obtained to have a long duration, the number of time-domain symbols of the control channel is equal to the number of time-domain symbols of the corresponding transmission domain, wherein the transmission direction of the corresponding transmission domain and the control channel is the same.

[0796] In this embodiment of the invention, the number of time-domain symbols corresponding to the long-duration control channel is different in different time units.

[0797] In this embodiment of the invention, the method further includes at least one of the following:

[0798] The number of time-domain symbols occupied by the control channel is determined based on the type of the second control information transmitted on the control channel, or the number of frequency-domain symbols occupied by the control channel is determined.

[0799] The number of time-domain symbols in the control channel is determined based on the capability level or channel quality level information of the first communication node, or the number of frequency-domain symbols in the control channel is determined; here, the first communication node feeds back the capability level or channel quality level information to the second communication node.

[0800] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate corresponding to the first control information, or the number of frequency-domain symbols occupied by the control channel is determined.

[0801] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate of the first data channel corresponding to the second control information, or the number of frequency-domain symbols occupied by the control channel is determined.

[0802] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate of the second data channel, or the number of frequency-domain symbols occupied by the control channel is determined.

[0803] The different control channel types are distinguished by at least one of the following: whether the control information second control information is CSI information or ACK / NACK information; the information length of the control information second control information; the first data channel is the data channel sent by the first communication node to the first communication node; the second data unit is the data channel sent by the first communication node to the second communication node in the current time unit; and the current time unit is the time unit in which the control channel is located.

[0804] In this embodiment of the invention, multiple second control messages with the same number of time-domain symbols are transmitted using one control channel;

[0805] Multiple second control messages of the same type are transmitted using one control channel.

[0806] The different types of second control information are distinguished by at least one of the following: whether the second control information is CSI information or ACK / NACK information, the information length of the second control information, and the service data type corresponding to the second control information;

[0807] The multiple second control information are multiple second control information that need to be fed back in the current time unit.

[0808] In this embodiment of the invention, the method further includes at least one of the following:

[0809] When multiple second control information that need to be fed back in the current time unit are sent on a control channel, the resource information of the control channel is obtained according to the first control information with the highest time unit index among the multiple first control information related to the multiple second control information;

[0810] When multiple second control information that the current time unit needs to feed back is sent on a control channel, the resource information of the control channel is obtained based on the control channel resource information corresponding to the multiple second control information.

[0811] In this embodiment of the invention, the time-frequency domain position of the demodulation reference signal of the control channel is obtained through one of the following methods:

[0812] The demodulation reference signal is obtained from the first control information as to whether it is on the start symbol or the end symbol of the control channel;

[0813] The first control information is used to determine whether the frequency domain resources occupied by the demodulation reference signal in one time domain symbol are continuous or discrete.

[0814] The relevant parameters of the demodulation reference signal are determined based on the number of time-domain symbols of the control channel;

[0815] The relevant parameters of the demodulation reference signal are determined based on whether the control channel and the second data channel can be code-division multiplexed.

[0816] The relevant parameters of the demodulation reference signal are determined based on the number of transmission method sets.

[0817] The relevant parameters of the demodulation reference signal are determined according to the transmission mode of the control channel, wherein the transmission mode includes: single-layer transmission, transmission diversity mode, and repeated transmission;

[0818] The second data channel is either a data channel sent from the first communication node to the second communication node, or a data channel sent from the third communication node to the second communication node.

[0819] In this embodiment of the invention, the first control information satisfies at least one of the following features:

[0820] The first control information is high-level semi-static control information;

[0821] The first control information is physical layer dynamic control information.

[0822] In this embodiment of the invention, the frequency domain resource information of the control channel is obtained through at least one of the following methods:

[0823] Physical layer dynamic information notification frequency domain resources.

[0824] Here, the frequency domain resources can occupy any one or more frequency domain resources within a predetermined bandwidth. Preferably, the frequency domain resource is a PRB, a sub-band, a CCE (Control channel element), or a REG (resource element group).

[0825] In this embodiment of the invention, the resources occupied by the control channel satisfy the following characteristics:

[0826] The end domain symbol position and start frequency domain resources corresponding to the control channel are obtained, as well as the number of control channel resource units; the multiple control channel resource units are first mapped in the frequency domain and then mapped in the time domain.

[0827] In this embodiment of the invention, the first parameter information further includes the time unit index information of the data channel or the first control information.

[0828] In this embodiment of the invention, the time resource information of the data channel or the first control information includes at least one of the following:

[0829] The data channel or the time unit index information where the first control information is located;

[0830] The data channel or the time-domain symbol index information where the first control information is located;

[0831] The time unit index information where the time domain end position of the data channel or the first control information is located;

[0832] The time-domain symbol index information of the time-domain end position of the data channel or the first control information.

[0833] In this embodiment of the invention, the demodulation reference signal resource information of the second control information is determined based on the CSI information in the first control information.

[0834] In this embodiment of the invention, the CSI information fed back by the first communication node includes the transmission resources corresponding to the first communication node, wherein the transmission resources include one or more of the following resources: transmission beam resources, transmission port resources, transmission precoding matrix resources, transmission time resources, transmission frequency domain resources, and transmission sequence resources.

[0835] In this embodiment of the invention, the first control information satisfies at least one of the following:

[0836] The first control information is common control information; the common control information may be a group common physical downlink control channel (PDCCH);

[0837] The first control information includes control channel resource set information for notifying the current time unit;

[0838] The first control information includes transmission order information for instructing the first communication node to send multiple transmission methods used to transmit the control channel;

[0839] The first control information includes correspondence information between the time domain region of the control channel and multiple transmission methods or sets of transmission methods for transmitting the control channel;

[0840] The first control information includes time-domain and / or frequency-domain resource information corresponding to each of the multiple transmission methods or sets of transmission methods used to send the control channel to the first communication node.

[0841] The first control information includes transmission mode information used to notify the first communication node to send the control channel; the transmission mode information may also be called beam information, or precoding information, or other equivalent names, and does not affect the inventiveness of the present invention.

[0842] The first control information includes control channel format information used to notify the first communication node to send the control channel; different control channels are distinguished by at least one of the following methods: frequency domain spread spectrum method, time domain spread spectrum method, maximum number of bits that can be transmitted information, and multiplexing method among multiple second-type control information.

[0843] The first control information includes information on the modulation scheme used by the first communication node to send the control channel;

[0844] The first control information includes the coding rate information used by the first communication node to send the control channel.

[0845] In this embodiment of the invention, the transmitting unit 1002 is further configured to:

[0846] Randomly select one or more control channel resources from the set of control channel resources, and transmit the control channel on the control channel resource;

[0847] Alternatively, one or more control channel resources may be selected from the set of control channel resources according to a predetermined rule, and the control channel may be transmitted on the control channel resource; the predetermined rule is the identification information of the first communication node.

[0848] In this embodiment of the invention, the sending method is represented by at least one of the following information:

[0849] First reference signal port set information; when the first reference channel port set includes only one reference signal port, the first reference signal port information is directly notified;

[0850] First reference signal resource index information;

[0851] Time-domain information corresponding to the first reference signal;

[0852] Frequency domain information corresponding to the first reference signal;

[0853] Sequence information corresponding to the first reference signal;

[0854] Send beam logic number information;

[0855] Pre-encoded codewords or codeword sets;

[0856] The quasi-co-positional relationship information between the demodulation reference signal and the second reference signal port of the control channel; the second reference signal port can also be a set of second reference signal ports and / or a second reference signal resource; the quasi-co-positional relationship can be interpreted as: if two reference signals satisfy quasi-co-positional conditions, it means that the channel characteristic parameters of one reference signal can be obtained from the channel characteristic parameters of the two reference signals, wherein the channel characteristic parameters include at least one of the following parameters: delay spread, Doppler spread, Doppler offset, average delay, average gain, average vertical transmission angle, average horizontal transmission angle, average vertical angle of arrival, average horizontal angle of arrival, center vertical transmission angle, center horizontal transmission angle, center vertical angle of arrival, and center horizontal angle of arrival;

[0857] Wherein, the first and second reference signals are reference signals sent by the first communication node.

[0858] And / or the first and second reference signals are reference signals received by the first communication node.

[0859] In this embodiment of the invention, when the first and second reference signals are reference signals received by the first communication node, the first and / or second reference signal information indicates one of the following:

[0860] Information about the transmission method used by the first communication node to send signals;

[0861] The transmission method information used by the first communication node to send the signal and the reception method information used by the receiving end of the signal;

[0862] After the first communication node sends a signal, the receiving method information of the receiving end of the signal;

[0863] The first communication node transmits signals using the transmission method information and receives signals using the reception method information.

[0864] Figure 11 This is a schematic diagram of the structural composition of a control channel receiving device according to an embodiment of the present invention, applied to a second communication node, such as... Figure 11 As shown, the device includes:

[0865] The sending unit 1101 is used to send first control information and / or first parameter information to the first communication node;

[0866] The receiving unit 1102 is used to receive the control channel sent by the first communication node according to the second transmission parameter information, wherein the second transmission parameter information is: the second transmission parameter information related to the control channel determined by the first communication node according to the first control information and / or the first parameter information;

[0867] The first parameter information includes at least one of the following: demodulation reference signal information corresponding to the first control information, demodulation reference signal information of the data channel corresponding to the control channel, type information of the second control information transmitted on the control channel, and channel coding rate information corresponding to the first control information.

[0868] Here, the first control information is sent from the second communication node to the first communication node, and the second control information is sent from the first communication node to the first communication node, wherein the second control information is on the control channel.

[0869] In this embodiment of the invention, the second transmission parameter information includes at least one of the following: control channel region information, frequency domain resource information occupied by the control channel, time domain symbol information occupied by the control channel, demodulation reference signal information of the control channel, code domain resource occupied by the control channel, and multiplexing mode of multiple second control information.

[0870] In this embodiment of the invention, the first control information is the first control information related to the data channel corresponding to the control channel;

[0871] The data channel and the first control information are received by the first communication node from the second communication node.

[0872] In this embodiment of the invention, the demodulation reference signal information includes at least one of the following:

[0873] The port index information of the demodulation reference signal;

[0874] The sequence index information used in the demodulation reference signal.

[0875] In this embodiment of the invention, the method further includes:

[0876] The resource information corresponding to the control channel is obtained based on the demodulation reference signal information of the data channel and at least one of the following: the frequency domain resources corresponding to the data channel, the index information corresponding to the first control information, and the time unit index information corresponding to the data channel.

[0877] In this embodiment of the invention, the method further includes:

[0878] The second frequency domain resource occupied by the control channel is obtained based on the smallest one or more frequency domain resource indices corresponding to the data channel.

[0879] The second frequency domain resource occupied by the control channel is obtained based on the largest one or more frequency domain resource indices corresponding to the data channel.

[0880] The third resource information of the control channel in the second frequency domain resource is obtained based on the demodulation reference signal information corresponding to the data channel.

[0881] In this embodiment of the invention, the third resource information includes at least one of the following:

[0882] The control channel index in the time-frequency resource group in the second frequency domain resource, wherein the second frequency domain resource includes multiple time-frequency resource groups;

[0883] The code domain resource index of the control channel in the second frequency domain resource;

[0884] The demodulation reference signal resource information corresponding to the control channel.

[0885] In this embodiment of the invention, the method further includes:

[0886] The third transmission parameter information of the control channel is obtained based on the demodulation reference signal information corresponding to the first control information and the index information corresponding to the first control information.

[0887] In this embodiment of the invention, the third transmission parameter information includes at least one of the following resource information: time-domain resources corresponding to the control channel, frequency-domain resources corresponding to the control channel, code resources corresponding to the control channel, and time-frequency code resources corresponding to the demodulation reference signal of the control channel.

[0888] In this embodiment of the invention, the method further includes:

[0889] Other signals are transmitted according to the control channel region information. When there is an intersection between the frequency domain resources allocated to other signals in the current time unit and the frequency domain resources where the control channel region is located, the other signals are not transmitted on the control channel region. The other signals include at least one of the following signals: data channel signal, measurement reference signal, demodulation reference signal, access request signal, and scheduling request signal.

[0890] Alternatively, the resources occupied by the control channel are a subset of the resources occupied by the control channel region, wherein the control channel region can also be referred to as a control channel resource set, wherein a control channel resource can be at least one of the following resources: time domain resources, frequency domain resources, code domain resources. In addition, the resources occupied by the control channel in the control channel region can be notified by dynamic signaling.

[0891] In this embodiment of the invention, the control channel region information includes at least one of the following:

[0892] The number of sub-regions included in the control channel region, frequency domain resource information of each sub-region, and time domain symbol information corresponding to each sub-region.

[0893] In this embodiment of the invention, the control channel region satisfies one of the following characteristics:

[0894] The control channel region occupies both sides of the predetermined bandwidth;

[0895] The larger the number of time-domain symbols corresponding to the sub-region above the predetermined bandwidth, the higher the frequency domain position it occupies. The higher the frequency domain position, the larger the subcarrier number it belongs to.

[0896] The larger the number of symbols corresponding to the sub-region below the predetermined bandwidth, the lower the frequency domain position it occupies. The lower the frequency domain position, the smaller the subcarrier number it belongs to.

[0897] When the sub-region contains N time-domain symbols, the end symbol of the N time-domain symbols is the end symbol of the second transmission domain;

[0898] When the sub-region contains N time-domain symbols, the start symbol of the N time-domain symbols is the start time-domain symbol of the second transmission domain.

[0899] The second transmission domain corresponds to the area where the second communication node receives signals.

[0900] In this embodiment of the invention, the indication information in the first control information that indicates the number of time-domain symbols related to the control channel includes at least one of the following:

[0901] Is the control channel a long-duration or short-duration channel?

[0902] The starting symbol index of the control channel;

[0903] The end symbol index of the control channel;

[0904] The number of time-domain symbols in the control channel;

[0905] The index of the number of time-domain symbols in the control channel within the agreed set of time-domain symbol counts.

[0906] In this embodiment of the invention, when the control channel is obtained to have a long duration, the number of time-domain symbols of the control channel is equal to the number of time-domain symbols of the corresponding transmission domain, wherein the transmission direction of the corresponding transmission domain and the control channel is the same.

[0907] In this embodiment of the invention, the number of time-domain symbols corresponding to the long-duration control channel is different in different time units.

[0908] In this embodiment of the invention, the method further includes at least one of the following:

[0909] The number of time-domain symbols occupied by the control channel is determined based on the type of the second control information transmitted on the control channel, or the number of frequency-domain symbols occupied by the control channel is determined.

[0910] The number of time-domain symbols in the control channel is determined based on the capability level or channel quality level information of the first communication node, or the number of frequency-domain symbols in the control channel is determined; here, the first communication node feeds back the capability level or channel quality level information to the second communication node.

[0911] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate corresponding to the first control information, or the number of frequency-domain symbols occupied by the control channel is determined.

[0912] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate of the first data channel corresponding to the second control information, or the number of frequency-domain symbols occupied by the control channel is determined.

[0913] The number of time-domain symbols occupied by the control channel is determined based on the channel coding rate of the second data channel, or the number of frequency-domain symbols occupied by the control channel is determined.

[0914] The different control channel types are distinguished by at least one of the following: whether the control information second control information is CSI information or ACK / NACK information; the information length of the control information second control information; the first data channel is the data channel sent by the first communication node to the first communication node; the second data unit is the data channel sent by the first communication node to the second communication node in the current time unit; and the current time unit is the time unit in which the control channel is located.

[0915] In this embodiment of the invention, multiple second control messages with the same number of time-domain symbols are transmitted using one control channel;

[0916] Multiple second control messages of the same type are transmitted using one control channel.

[0917] The different types of second control information are distinguished by at least one of the following: whether the second control information is CSI information or ACK / NACK information, the information length of the second control information, and the service data type corresponding to the second control information;

[0918] The multiple second control information are multiple second control information that need to be fed back in the current time unit.

[0919] In this embodiment of the invention, the method further includes at least one of the following:

[0920] When multiple second control information that need to be fed back in the current time unit are sent on a control channel, the resource information of the control channel is obtained according to the first control information with the highest time unit index among the multiple first control information related to the multiple second control information;

[0921] When multiple second control information that the current time unit needs to feed back is sent on a control channel, the resource information of the control channel is obtained based on the control channel resource information corresponding to the multiple second control information.

[0922] In this embodiment of the invention, the time-frequency domain position of the demodulation reference signal of the control channel is obtained through one of the following methods:

[0923] The demodulation reference signal is obtained from the first control information as to whether it is on the start symbol or the end symbol of the control channel;

[0924] The first control information is used to determine whether the frequency domain resources occupied by the demodulation reference signal in one time domain symbol are continuous or discrete.

[0925] The relevant parameters of the demodulation reference signal are determined based on the number of time-domain symbols of the control channel;

[0926] The relevant parameters of the demodulation reference signal are determined based on whether the control channel and the second data channel can be code-division multiplexed.

[0927] The relevant parameters of the demodulation reference signal are determined based on the number of transmission method sets.

[0928] The relevant parameters of the demodulation reference signal are determined according to the transmission mode of the control channel, wherein the transmission mode includes: single-layer transmission, transmission diversity mode, and repeated transmission;

[0929] The second data channel is either a data channel sent from the first communication node to the second communication node, or a data channel sent from the third communication node to the second communication node.

[0930] In this embodiment of the invention, the first control information satisfies at least one of the following features:

[0931] The first control information is high-level semi-static control information;

[0932] The first control information is physical layer dynamic control information.

[0933] In this embodiment of the invention, the frequency domain resource information of the control channel is obtained through at least one of the following methods:

[0934] Physical layer dynamic information notification frequency domain resources.

[0935] Here, the frequency domain resources can occupy any one or more frequency domain resources within a predetermined bandwidth. Preferably, the frequency domain resource is a PRB, a sub-band, a CCE (Control channel element), or a REG (resource element group).

[0936] In this embodiment of the invention, the resources occupied by the control channel satisfy the following characteristics:

[0937] The end domain symbol position and start frequency domain resources corresponding to the control channel are obtained, as well as the number of control channel resource units; the multiple control channel resource units are first mapped in the frequency domain and then mapped in the time domain.

[0938] In this embodiment of the invention, the first parameter information further includes the time unit index information of the data channel or the first control information.

[0939] In this embodiment of the invention, the time resource information of the data channel or the first control information includes at least one of the following:

[0940] The data channel or the time unit index information where the first control information is located;

[0941] The data channel or the time-domain symbol index information where the first control information is located;

[0942] The time unit index information where the time domain end position of the data channel or the first control information is located;

[0943] The time-domain symbol index information of the time-domain end position of the data channel or the first control information.

[0944] In this embodiment of the invention, the demodulation reference signal resource information of the second control information is determined based on the CSI information in the first control information.

[0945] In this embodiment of the invention, the CSI information fed back by the first communication node includes the transmission resources corresponding to the first communication node, wherein the transmission resources include one or more of the following resources: transmission beam resources, transmission port resources, transmission precoding matrix resources, transmission time resources, transmission frequency domain resources, and transmission sequence resources.

[0946] In this embodiment of the invention, the first control information satisfies at least one of the following:

[0947] The first control information is common control information; the common control information may be a group common physical downlink control channel (PDCCH);

[0948] The first control information includes control channel resource set information for notifying the current time unit;

[0949] The first control information includes transmission order information for instructing the first communication node to send multiple transmission methods used to transmit the control channel;

[0950] The first control information includes correspondence information between the time domain region of the control channel and multiple transmission methods or sets of transmission methods for transmitting the control channel;

[0951] The first control information includes time-domain and / or frequency-domain resource information corresponding to each of the multiple transmission methods or sets of transmission methods used to send the control channel to the first communication node.

[0952] The first control information includes transmission mode information used to notify the first communication node to send the control channel; the transmission mode information may also be called beam information, or precoding information, or other equivalent names, and does not affect the inventiveness of the present invention.

[0953] The first control information includes control channel format information used to notify the first communication node to send the control channel; different control channels are distinguished by at least one of the following methods: frequency domain spread spectrum method, time domain spread spectrum method, maximum number of bits that can be transmitted information, and multiplexing method among multiple second-type control information.

[0954] The first control information includes information on the modulation scheme used by the first communication node to send the control channel;

[0955] The first control information includes the coding rate information used by the first communication node to send the control channel.

[0956] In this embodiment of the invention, the receiving unit 1102 is further configured to:

[0957] On all resource sets of the control channel resource set, detect the control channel sent by the first communication node;

[0958] According to a predetermined rule, the control channel transmitted by the first communication node is detected on a subset of the control channel resource set; the predetermined rule is the identification information of the first communication node.

[0959] In this embodiment of the invention, the sending method is represented by at least one of the following information:

[0960] First reference signal port set information; when the first reference channel port set includes only one reference signal port, the first reference signal port information is directly notified;

[0961] First reference signal resource index information;

[0962] Time-domain information corresponding to the first reference signal;

[0963] Frequency domain information corresponding to the first reference signal;

[0964] Sequence information corresponding to the first reference signal;

[0965] Send beam logic number information;

[0966] Pre-encoded codewords or codeword sets;

[0967] The quasi-co-positional relationship information between the demodulation reference signal and the second reference signal port of the control channel; the second reference signal port can also be a set of second reference signal ports and / or a second reference signal resource; the quasi-co-positional relationship can be interpreted as: if two reference signals satisfy quasi-co-positional conditions, it means that the channel characteristic parameters of one reference signal can be obtained from the channel characteristic parameters of the two reference signals, wherein the channel characteristic parameters include at least one of the following parameters: delay spread, Doppler spread, Doppler offset, average delay, average gain, average vertical transmission angle, average horizontal transmission angle, average vertical angle of arrival, average horizontal angle of arrival, center vertical transmission angle, center horizontal transmission angle, center vertical angle of arrival, and center horizontal angle of arrival;

[0968] Wherein, the first and second reference signals are reference signals sent by the first communication node.

[0969] And / or the first and second reference signals are reference signals received by the first communication node.

[0970] In this embodiment of the invention, when the first and second reference signals are reference signals received by the first communication node, the first and / or second reference signal information indicates one of the following:

[0971] Information about the transmission method used by the first communication node to send signals;

[0972] The transmission method information used by the first communication node to send the signal and the reception method information used by the receiving end of the signal;

[0973] After the first communication node sends a signal, the receiving method information of the receiving end of the signal;

[0974] The first communication node transmits signals using the transmission method information and receives signals using the reception method information.

[0975] Figure 13 This is a flowchart illustrating the method for determining the control channel transmission mode according to an embodiment of the present invention. Figure 1 ;like Figure 13 As shown, the method for determining the control channel transmission mode includes:

[0976] Step 1301: The first communication node determines the transmission method of the control channel based on the transmission method of the data channel.

[0977] Step 1302: The first communication node sends the control channel to the second communication node according to the determined transmission method.

[0978] In this embodiment of the invention, the sending method is distinguished by at least one of the following features:

[0979] The reference signal's frequency domain resources, time domain resources, sequence resources used by the reference signal, beam resources used by the reference signal, precoding matrix resources used by the reference signal, reference signal resource index, beam resources used by the reference signal, and quasi-co-positional relationship between reference signals. Quasi-co-positional relationship can be interpreted as: if two reference signals satisfy quasi-co-positional conditions, it means that the channel characteristic parameters of one reference signal can be obtained from the channel characteristic parameters of the two reference signals. The channel characteristic parameters include at least one of the following parameters: delay spread, Doppler spread, Doppler offset, average delay, average gain, average vertical transmission angle, average horizontal transmission angle, average vertical angle of arrival, average horizontal angle of arrival, center vertical transmission angle, center horizontal transmission angle, center vertical angle of arrival, and center horizontal angle of arrival.

[0980] The reference signal is sent by the first communication node.

[0981] And / or the reference signal is received by the first communication node.

[0982] In this embodiment of the invention, the method of determining the transmission of the control channel satisfies at least one of the following features:

[0983] When the transmission time interval between the control channel and the data channel is less than a predetermined threshold, the transmission mode of the control channel is determined according to the transmission mode of the data channel;

[0984] The transmission method of the control channel remains unchanged after the transmission method of the data channel changes, until a new notification signaling is received;

[0985] When the transmission time interval between the third type of control channel and the fourth type of control channel is less than a predetermined threshold, the transmission mode of the third type of control channel is determined according to the transmission mode of the fourth type of control channel.

[0986] The transmission method of the third type of control channel remains unchanged after the transmission method of the fourth type of control channel is changed, until a new notification signaling is received.

[0987] When the control channel belongs to the first type of control channel, the transmission method of the control channel changes according to the transmission method of the data channel;

[0988] When the control channel belongs to the second type of control channel, the transmission method of the control channel does not change according to the transmission method of the data channel;

[0989] Receive signaling information sent by the second communication node, and determine whether the transmission mode of the control channel changes according to the transmission mode of the data channel based on the signaling information;

[0990] Receive signaling information sent by the second communication node, and determine whether the transmission method of the third type of control channel changes according to the transmission method of the fourth type of control channel based on the signaling information;

[0991] The transmission mode of the control channel changes only within a time window according to the transmission mode of the data channel or the fourth type of control channel. Outside the time window, the transmission mode of the control channel reverts to the original transmission mode.

[0992] In this embodiment of the invention, the different types of control channels are distinguished based on at least one of the following characteristics:

[0993] The control information type carried by the control channel;

[0994] The number of time-domain symbols occupied by the control channel;

[0995] The number of frequency domain resources used by the control channel;

[0996] The number of transmission methods used by the control channel;

[0997] The number of transmission modes used by the control channel.

[0998] Figure 14 This is a flowchart illustrating the method for determining the control channel transmission mode according to an embodiment of the present invention; as shown in Figure 2. Figure 14 As shown, the method for determining the control channel transmission mode includes:

[0999] Step 1401: The first communication node determines the transmission method of the third type of control channel based on the transmission method of the fourth type of control channel.

[1000] Step 1402: The first communication node sends the third type of control channel to the second communication node according to the determined transmission method.

[1001] In this embodiment of the invention, the sending method is distinguished by at least one of the following features:

[1002] The reference signal's frequency domain resources, time domain resources, sequence resources used by the reference signal, beam resources used by the reference signal, precoding matrix resources used by the reference signal, reference signal resource index, beam resources used by the reference signal, and quasi-co-positional relationship between reference signals. Quasi-co-positional relationship can be interpreted as: if two reference signals satisfy quasi-co-positional conditions, it means that the channel characteristic parameters of one reference signal can be obtained from the channel characteristic parameters of the two reference signals. The channel characteristic parameters include at least one of the following parameters: delay spread, Doppler spread, Doppler offset, average delay, average gain, average vertical transmission angle, average horizontal transmission angle, average vertical angle of arrival, average horizontal angle of arrival, center vertical transmission angle, center horizontal transmission angle, center vertical angle of arrival, and center horizontal angle of arrival.

[1003] The reference signal is sent by the first communication node.

[1004] And / or the reference signal is received by the first communication node.

[1005] In this embodiment of the invention, the method of determining the transmission of the control channel satisfies at least one of the following features:

[1006] When the transmission time interval between the control channel and the data channel is less than a predetermined threshold, the transmission mode of the control channel is determined according to the transmission mode of the data channel;

[1007] The transmission method of the control channel remains unchanged after the transmission method of the data channel changes, until a new notification signaling is received;

[1008] When the transmission time interval between the third type of control channel and the fourth type of control channel is less than a predetermined threshold, the transmission mode of the third type of control channel is determined according to the transmission mode of the fourth type of control channel.

[1009] The transmission method of the third type of control channel remains unchanged after the transmission method of the fourth type of control channel is changed, until a new notification signaling is received.

[1010] When the control channel belongs to the first type of control channel, the transmission method of the control channel changes according to the transmission method of the data channel;

[1011] When the control channel belongs to the second type of control channel, the transmission method of the control channel does not change according to the transmission method of the data channel;

[1012] Receive signaling information sent by the second communication node, and determine whether the transmission mode of the control channel changes according to the transmission mode of the data channel based on the signaling information;

[1013] Receive signaling information sent by the second communication node, and determine whether the transmission method of the third type of control channel changes according to the transmission method of the fourth type of control channel based on the signaling information;

[1014] The transmission mode of the control channel changes only within a time window according to the transmission mode of the data channel or the fourth type of control channel. Outside the time window, the transmission mode of the control channel reverts to the original transmission mode.

[1015] In this embodiment of the invention, the different types of control channels are distinguished based on at least one of the following characteristics:

[1016] The control information type carried by the control channel;

[1017] The number of time-domain symbols occupied by the control channel;

[1018] The number of frequency domain resources used by the control channel;

[1019] The number of transmission methods used by the control channel;

[1020] The number of transmission modes used by the control channel.

[1021] Figure 15 This is a flowchart illustrating the method for determining the control channel receiving mode according to an embodiment of the present invention; as shown below. Figure 15 As shown, the method for determining the control channel receiving mode includes:

[1022] Step 1501: The second communication node receives the control channel sent by the first communication node according to the determined receiving method.

[1023] The determined receiving method is determined based on the receiving method of the data channel sent by the first communication node, or the determined receiving method is determined based on the receiving method of the fourth type of control channel sent by the first communication node.

[1024] In this embodiment of the invention, the determined receiving method is distinguished by at least one of the following features:

[1025] Frequency domain resources where the reference signal is located, time domain resources where the reference signal is located, sequence resources used by the reference signal, beam resources used by the reference signal, precoding matrix resources used by the reference signal, reference signal resource index where the reference signal is located, beam resources used by the reference signal, quasi-co-positional relationships between participating signals;

[1026] The reference signal is sent by the first communication node.

[1027] And / or the reference signal is received by the first communication node.

[1028] In this embodiment of the invention, the determined receiving method satisfies at least one of the following features:

[1029] When the transmission time interval between the control channel and the data channel is less than a predetermined threshold, the reception mode of the control channel is determined according to the reception mode of the data channel;

[1030] The receiving method of the control channel remains unchanged after the receiving method of the data channel changes, until a new notification signaling is received.

[1031] When the transmission time interval between the control channel and the fourth type of control channel is less than a predetermined threshold, the reception method of the control channel is determined according to the reception method of the fourth type of control channel.

[1032] The receiving method of the control channel remains unchanged after the receiving method of the fourth type of control channel is changed, until a new notification signaling is received.

[1033] When the control channel belongs to the first type of control channel, the receiving method of the control channel changes according to the receiving method of the data channel;

[1034] When the control channel belongs to the third type of control channel, the receiving method of the control channel changes according to the receiving method of the data channel;

[1035] When the control channel belongs to the second type of control channel, the receiving method of the control channel does not change according to the receiving method of the data channel.

[1036] In this embodiment of the invention, the different types of control channels are distinguished based on at least one of the following characteristics:

[1037] The control information type carried by the control channel;

[1038] The number of time-domain symbols occupied by the control channel;

[1039] The number of frequency domain resources used by the control channel;

[1040] The number of transmission methods used by the control channel;

[1041] The number of transmission modes used by the control channel.

[1042] Step 1502: The second communication node sends signaling information to the first communication node.

[1043] The signaling information includes at least one of the following:

[1044] The signaling information includes information on whether the reception method of the control channel changes according to the reception method of the data channel;

[1045] The signaling information includes information on whether the reception method of the control channel has changed according to the reception method of the fourth type of control channel;

[1046] The signaling information includes information on whether the transmission method of the control channel changes according to the transmission method of the data channel;

[1047] The signaling information includes information on whether the transmission method of the control channel has changed according to the transmission method of the fourth type of control channel;

[1048] The receiving mode of the control channel changes only within a time window according to the receiving mode of the data channel or the fourth type of control channel. Outside the time window, the receiving mode of the control channel reverts to the original receiving mode.

[1049] Example 20

[1050] In this embodiment, the transmission mode used by the terminal to transmit the control channel is determined based on the following information: the transmission mode of the terminal to transmit the data channel. Different transmission modes are distinguished by at least one of the following: transmission beam, measurement reference signal port information, time domain resources where the measurement reference signal is located, frequency domain resources where the measurement reference signal is located, sequence resources used by the measurement reference signal, and beam resources used by the measurement reference signal. For example, the transmission mode can be logically numbered using at least one of the above information. In this embodiment, the transmission mode can also be determined by establishing a quasi-co-location relationship (QCL) between different reference signals. For example, the transmission mode used by the terminal can be determined based on the measurement reference signal port, that is, establishing a quasi-co-location relationship between the demodulation reference signal of the control channel and the measurement reference signal. The measurement reference signal can be a downlink measurement reference signal, in which case the transmission beam of the control channel is obtained using reciprocity; or it can be an uplink measurement reference signal, in which case the transmission beam of the control channel and the transmission beam of the uplink measurement reference signal are...

[1051] The transmission mode used by the data channel can also be notified to the terminal in at least one of the following ways: the base station notifies the codebook index information used by the data channel in the first control information; the base station notifies the first reference signal port information (wherein, the first reference signal port information can also be the first reference signal resource information, and / or the first reference signal set information) in the first control information, and the terminal obtains the transmission mode information used to transmit the data channel based on the first reference signal port information; the first control information notifies that there is a quasi-co-positional relationship between the demodulation reference signal and the second reference signal port (wherein, the second reference signal port can also be the second reference signal port set, and / or the second reference signal resource), and the quasi-co-positional relationship can be interpreted as: if two reference signals satisfy quasi-co-position, it means that the channel characteristic parameters of the one reference signal can be obtained from the channel characteristic parameters of the two reference signals, wherein the channel characteristic parameters include at least one of the following parameters: delay spread, Doppler spread, Doppler offset, average delay, average gain, average vertical transmission angle, average horizontal transmission angle, average vertical angle of arrival, average horizontal angle of arrival, center vertical transmission angle, center horizontal transmission angle, center vertical angle of arrival, and center horizontal angle of arrival. The first and second reference signals are sent to the second communication node by the previously mentioned terminal (i.e., the first and second reference signals are sent to the second communication node before the first communication node receives the first control information and / or the first parameter information), and / or the first and second reference signals are sent to the first communication node by the previously mentioned base station (i.e., the first and second reference signals are sent to the first communication node before the second communication node sends the first control information and / or the first parameter information).

[1052] Example 21

[1053] In this embodiment, the terminal determines the transmission method of the first type of control channel according to the transmission method of the data channel, but the transmission method of the second type of control channel does not change according to the transmission method of the data channel.

[1054] The difference between the first type of control channel and the second type of control channel includes at least one of the following characteristics: The types of second control information carried are different (e.g., ACK / NACK, CSI, beam recovery request, resource request; for example, the second type of control channel carries ACK / NACK, while the first type of control channel carries CSI); the number (or set of) transmission modes used by the control channels are different, for example, the first type of control channel has one set of transmission modes, or the number of transmission modes is greater than one. For example, the base station notifies the first type of control channel in the third signaling information that the transmission mode used is mode 1 (explicitly or implicitly, transmission beam 1), and the base station informs the terminal in the fourth signaling information that the transmission beam of the data channel is mode 2 (explicitly or implicitly, transmission beam 2), at which point the terminal transmits the first type of control channel using mode 2. Preferably, the transmission time of the third signaling information is not later than the transmission time of the fourth signaling information.

[1055] The time interval between the data channel and the first type of control channel transmitted by the terminal is no greater than a predetermined threshold, where the predetermined threshold can be 0. When the transmission time interval between the first type of control channel and the data channel is greater than the predetermined threshold, the transmission mode of the first type of control channel is restored to the original transmission mode of the first type of control channel. For example, if the third signaling information is effective in slot n, the fourth signaling information is effective in slot n+k, where k is an integer, and the data channel is transmitted in slot n+k, then if the first type of control channel falls within the range of slot n+k-offset to slot n+k+offset (where offset is an integer, or falls within the range of slot n+k to slot n+k+offset), then the transmission mode of the first type of control channel is mode 2 (i.e., the transmission mode notified by the data channel). In the time range outside of slot n+k-offset to slot n+k+offset, the transmission mode of the first type of control channel is mode 1 (i.e., the original transmission mode of the first type of control channel). In this embodiment, the slot level is used as an example region, but it can also be the time domain symbol level.

[1056] Alternatively, once the transmission time of the first type of control channel changes according to the transmission method of the data channel, it remains valid and will not be changed back to the original control channel transmission method until new signaling information is notified.

[1057] The different transmission methods are distinguished based on at least one of the following information: the transmission beam, and the first reference signal information corresponding to the demodulation reference signal of the control channel, wherein the demodulation reference signal of the control channel and the first reference signal satisfy a quasi-co-positional relationship with respect to a channel characteristic parameter. The first reference signal includes at least one of the following information: first reference signal port set information; first reference signal resource index information; time-domain information corresponding to the first reference signal; frequency-domain information corresponding to the first reference signal; sequence information corresponding to the first reference signal; when the first reference channel port set includes a reference signal port, the first reference signal port information is directly notified.

[1058] Example 22

[1059] In this embodiment, the transmission method of the third type of control channel is determined according to the transmission method of the fourth type of control channel.

[1060] The distinguishing features of different types of control channels include at least one of the following: the type of second control information carried is different (e.g., ACK / NACK, CSI, beam recovery request, resource request; for example, ACK / NACK is carried in the fourth type of control channel, and CSI is carried in the third type of control channel); the number (or set of) transmission methods used by the control channel is different, for example, the third type of control channel has one set of transmission methods, and the fourth type of control channel has more than one set of transmission methods. For example, the base station notifies in the third signaling information that the transmission method used for the third type of control channel is mode 1 (explicitly or implicitly, transmission beam 1), and the base station informs the terminal in the fourth signaling information that the transmission beam for the fourth type of control channel is mode 2 (explicitly or implicitly, transmission beam 2), at which point the terminal transmits the third type of control channel using mode 2. Preferably, the transmission time of the third signaling information is not later than the transmission time of the fourth signaling information.

[1061] Similar to Embodiment 21, one approach is that the third type of control channel only transmits within a predetermined area, and its transmission method changes according to the fourth type of control channel. Outside the predetermined area, it is updated to the original transmission method of the third type of control channel.

[1062] Another transmission method is that the transmission method of the third type of control channel is changed according to the transmission method of the fourth type of control channel, and then remains unchanged until a new signaling notification is received.

[1063] The different transmission methods are distinguished based on at least one of the following information: transmission beam, first reference signal information corresponding to the demodulation reference signal of the control channel, wherein the demodulation reference signal of the control channel and the first reference signal satisfy a quasi-co-positional relationship with respect to a channel characteristic parameter. The first reference signal includes at least one of the following information: first reference signal port set information; first reference signal resource index information; time-domain information corresponding to the first reference signal; frequency-domain information corresponding to the first reference signal; sequence information corresponding to the first reference signal; when the first reference channel port set includes a reference signal port, the first reference signal port information is directly notified.

[1064] The uplink control channel transmission methods described in the various specific embodiments of this invention can also be used for downlink control channel transmission.

[1065] Figure 16 This is a schematic diagram of the structure of a first device for determining the control channel transmission method according to an embodiment of the present invention, applied to a first communication node, such as... Figure 16 As shown, the first determining device includes:

[1066] The determining unit 1601 is used to determine the transmission mode of the control channel according to the transmission mode of the data channel, or to determine the transmission mode of the third type of control channel according to the transmission mode of the fourth type of control channel.

[1067] The transmitting unit 1602 is used to transmit a control channel to the second communication node according to a determined transmitting method, or to transmit the third type of control channel to the second communication node according to a determined transmitting method.

[1068] In this embodiment of the invention, the sending method is distinguished by at least one of the following features:

[1069] Frequency domain resources where the reference signal is located, time domain resources where the reference signal is located, sequence resources used by the reference signal, beam resources used by the reference signal, precoding matrix resources used by the reference signal, reference signal resource index where the reference signal is located, and quasi-co-positional relationships between reference signals;

[1070] The reference signal is sent by the first communication node.

[1071] And / or the reference signal is received by the first communication node.

[1072] In this embodiment of the invention, the method of determining the transmission of the control channel satisfies at least one of the following features:

[1073] When the transmission time interval between the control channel and the data channel is less than a predetermined threshold, the transmission mode of the control channel is determined according to the transmission mode of the data channel;

[1074] The transmission method of the control channel remains unchanged after the transmission method of the data channel changes, until a new notification signaling is received;

[1075] When the transmission time interval between the third type of control channel and the fourth type of control channel is less than a predetermined threshold, the transmission mode of the third type of control channel is determined according to the transmission mode of the fourth type of control channel.

[1076] The transmission method of the third type of control channel remains unchanged after the transmission method of the fourth type of control channel is changed, until a new notification signaling is received.

[1077] When the control channel belongs to the first type of control channel, the transmission method of the control channel changes according to the transmission method of the data channel;

[1078] When the control channel belongs to the second type of control channel, the transmission method of the control channel does not change according to the transmission method of the data channel;

[1079] Receive signaling information sent by the second communication node, and determine whether the transmission mode of the control channel changes according to the transmission mode of the data channel based on the signaling information;

[1080] Receive signaling information sent by the second communication node, and determine whether the transmission method of the third type of control channel changes according to the transmission method of the fourth type of control channel based on the signaling information;

[1081] The transmission mode of the control channel changes only within a time window according to the transmission mode of the data channel or the fourth type of control channel. Outside the time window, the transmission mode of the control channel reverts to the original transmission mode.

[1082] In this embodiment of the invention, the different types of control channels are distinguished based on at least one of the following characteristics:

[1083] The control information type carried by the control channel;

[1084] The number of time-domain symbols occupied by the control channel;

[1085] The number of frequency domain resources used by the control channel;

[1086] The number of transmission methods used by the control channel;

[1087] The number of transmission modes used by the control channel.

[1088] Figure 17This is a schematic diagram of the structure of the second determining device for the control channel receiving method according to an embodiment of the present invention, applied to the second communication node, such as... Figure 17 As shown, the second determining device includes:

[1089] The receiving unit 1701 is configured to receive a control channel sent by a first communication node according to a determined receiving method; the determined receiving method is determined based on the receiving method of receiving a data channel sent by the first communication node, or the determined receiving method is determined based on the receiving method of receiving a fourth type of control channel sent by the first communication node.

[1090] In this embodiment of the invention, the determined receiving method is distinguished by at least one of the following features:

[1091] Frequency domain resources where the reference signal is located, time domain resources where the reference signal is located, sequence resources used by the reference signal, beam resources used by the reference signal, precoding matrix resources used by the reference signal, reference signal resource index where the reference signal is located, beam resources used by the reference signal, quasi-co-positional relationships between participating signals;

[1092] The reference signal is sent by the first communication node.

[1093] And / or the reference signal is received by the first communication node.

[1094] In this embodiment of the invention, the determined receiving method satisfies at least one of the following features:

[1095] When the transmission time interval between the control channel and the data channel is less than a predetermined threshold, the reception mode of the control channel is determined according to the reception mode of the data channel;

[1096] The receiving method of the control channel remains unchanged after the receiving method of the data channel changes, until a new notification signaling is received.

[1097] When the transmission time interval between the control channel and the fourth type of control channel is less than a predetermined threshold, the reception method of the control channel is determined according to the reception method of the fourth type of control channel.

[1098] The receiving method of the control channel remains unchanged after the receiving method of the fourth type of control channel is changed, until a new notification signaling is received.

[1099] When the control channel belongs to the first type of control channel, the receiving method of the control channel changes according to the receiving method of the data channel;

[1100] When the control channel belongs to the third type of control channel, the receiving method of the control channel changes according to the receiving method of the data channel;

[1101] When the control channel belongs to the second type of control channel, the receiving method of the control channel does not change according to the receiving method of the data channel.

[1102] In this embodiment of the invention, the different types of control channels are distinguished based on at least one of the following characteristics:

[1103] The control information type carried by the control channel;

[1104] The number of time-domain symbols occupied by the control channel;

[1105] The number of frequency domain resources used by the control channel;

[1106] The number of transmission methods used by the control channel;

[1107] The number of transmission modes used by the control channel.

[1108] In this embodiment of the invention, the second determining device further includes:

[1109] The sending unit 1702 is configured to send signaling information to the first communication node, the signaling information including at least one of the following:

[1110] The signaling information includes information on whether the reception method of the control channel changes according to the reception method of the data channel;

[1111] The signaling information includes information on whether the reception method of the control channel has changed according to the reception method of the fourth type of control channel;

[1112] The signaling information includes information on whether the transmission method of the control channel changes according to the transmission method of the data channel;

[1113] The signaling information includes information on whether the transmission method of the control channel has changed according to the transmission method of the fourth type of control channel;

[1114] The receiving mode of the control channel changes only within a time window according to the receiving mode of the data channel or the fourth type of control channel. Outside the time window, the receiving mode of the control channel reverts to the original receiving mode.

[1115] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[1116] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[1117] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[1118] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[1119] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A wireless communication method, comprising: The first communication node determines the demodulation reference signal information of the uplink control channel PUCCH based on the first control information; The uplink control channel is sent to the second communication node according to the determined demodulation reference signal information, and the uplink control channel carries the second control information. Wherein, the first control information is downlink control information received by the first communication node from the second communication node, and the first control information satisfies at least one of the following characteristics: The first control information is high-level semi-static control information; The first control information is physical layer dynamic control information. The uplink control channel satisfies the following characteristics: The uplink control channel includes one or more uplink control channel resource elements, wherein each uplink control channel resource element consists of X12 time-domain symbols and Y12 subcarriers, and each uplink control channel resource element includes the demodulation reference signal, wherein X12 and Y12 are positive integers.

2. The method according to claim 1, wherein, The uplink control channel occupies X9 time-domain symbols, among which, The X9 time-domain symbols correspond to one demodulation reference signal, and the demodulation reference signal is used to demodulate the control information on the X9 time-domain symbols; or The X9 time-domain symbols are defined as Y9 time-domain units, each of which corresponds to a demodulation reference signal. Each demodulation reference signal is used to demodulate the control information in its corresponding time-domain unit. Where X9 is greater than 1, and Y9 is a natural number less than or equal to X9.

3. The method of claim 2, wherein, The number of time-domain units Y9 is determined according to one of the following: Pre-configured fixed values; signaling notification; the number of transmit beams used by the first communication node to send the uplink control channel.

4. The method of claim 2, wherein, Whether the X9 time-domain symbols correspond to one demodulation reference signal or each of the Y9 time-domain units determined by the X9 time-domain symbols corresponds to one demodulation reference signal is determined according to one of the following: The signaling sent by the second communication node; The number of time-domain symbols occupied by the PUCCH; The transmission mode for sending the PUCCH includes transmission diversity and retransmission; The number of transmit beam sets used by the terminal to send PUCCH.

5. The method according to claim 2, wherein the Y9 time-domain units satisfy at least one of the following characteristics: The first communication node transmits the uplink control channel using a transmit beam in each of the Y9 time-domain units, and the Y9 time-domain units correspond to the Y9 transmit beams; The first communication node repeatedly transmits the second control information in the Y9 time domain units.

6. The method according to claim 1, wherein: When the uplink control channel includes multiple uplink control channel resource elements, the uplink control channel occupies the same demodulation reference signal port in the multiple uplink control channel resource elements.

7. The method of claim 1, wherein, X12 equals 1, Y12 equals 12.

8. The method of claim 1, wherein, The time-frequency domain position of the demodulation reference signal for the uplink control channel is obtained through one of the following methods: The first control information is used to determine whether the frequency domain resources occupied by the demodulation reference signal in one time domain symbol are continuous or discrete. The relevant parameters of the demodulation reference signal are determined based on the number of time-domain symbols of the uplink control channel; The relevant parameters of the demodulation reference signal are determined based on the number of transmit beams used to transmit the uplink control channel.

9. The method of claim 1, wherein, The frequency domain resource information of the uplink control channel is obtained in the following way: Frequency domain resources for physical layer dynamic information notification.

10. The method of claim 1, wherein, The resources occupied by the uplink control channel satisfy the following characteristics: The end domain symbol position and start frequency domain resources corresponding to the uplink control channel are obtained, as well as the number of uplink control channel resource units; multiple uplink control channel resource units are first mapped in the frequency domain and then mapped in the time domain.

11. The method of claim 1, wherein, The transmission parameters of the uplink control channel are obtained based on the time resource information of the data channel and the first control information, wherein the time resource information of the data channel and / or the first control information includes at least one of the following: The data channel or the time unit index information where the first control information is located; The data channel or the time-domain symbol index information where the first control information is located; The time unit index information where the time domain end position of the data channel or the first control information is located; The time-domain symbol index information of the time-domain end position of the data channel or the first control information.

12. The method of claim 1, wherein, The method further includes: The first communication node sends CSI information back to the second communication node; The first communication node determines the demodulation reference signal information of the downlink channel based on the feedback CSI information, wherein the downlink channel includes at least one of the following: a downlink control channel or a downlink data channel.

13. The method according to claim 12, wherein, The CSI information fed back by the first communication node includes the transmission resources selected by the first communication node from the second communication node, wherein the transmission resources include one or more of the following resources: transmission beam resources, transmission port resources, transmission precoding matrix resources, transmission time resources, transmission frequency domain resources, and transmission sequence resources.

14. The method of claim 13, wherein, The transmission resources and demodulation reference signal ports have a corresponding relationship, and the corresponding relationship satisfies at least one of the following relationships: there is a one-to-one correspondence between the transmission resources and the demodulation reference ports; there is a one-to-one correspondence between the transmission resources and the set of demodulation reference ports; multiple transmission resources correspond to the same demodulation reference port.

15. The method of claim 1, wherein, The first control information includes the transmission beam information used to notify the first communication node to send the uplink control channel, wherein different transmission beams are distinguished by at least one of the following: measurement reference signal port information, time domain resources where the measurement reference signal is located, frequency domain resources where the measurement reference signal is located, and sequence resources used for the measurement reference signal.

16. A wireless communication method, comprising: The second communication node determines the demodulation reference signal information of the uplink control channel PUCCH; The second communication node sends first control information to the first communication node, wherein the first control information includes the determined demodulation reference signal information of the uplink control channel; The uplink control channel transmitted by the first communication node is received based on the determined demodulation reference signal information. The uplink control channel carries second control information. Wherein, the first control information satisfies at least one of the following characteristics: The first control information is high-level semi-static control information; The first control information is physical layer dynamic control information. The uplink control channel satisfies the following characteristics: The uplink control channel includes one or more uplink control channel resource elements, wherein each uplink control channel resource element consists of X12 time-domain symbols and Y12 subcarriers, and each uplink control channel resource element includes the demodulation reference signal, wherein X12 and Y12 are positive integers.

17. The method of claim 16, wherein, The uplink control channel occupies X9 time-domain symbols, among which, The X9 time-domain symbols correspond to one demodulation reference signal, and the demodulation reference signal is used to demodulate the control information on the X9 time-domain symbols; or The X9 time-domain symbols are defined as Y9 time-domain units, each of which corresponds to a demodulation reference signal. Each demodulation reference signal is used to demodulate the control information in its corresponding time-domain unit. Where X9 is greater than 1, and Y9 is a natural number less than or equal to X9.

18. The method of claim 17, wherein, The number of time-domain units Y9 is determined by one of the following: Pre-configured fixed values; signaling notification; the number of transmit beams used by the first communication node to send the uplink control channel.

19. The method of claim 17, wherein, The X9 time-domain symbols correspond to one demodulation reference signal, or each of the Y9 time-domain units determined by the X9 time-domain symbols corresponds to one demodulation reference signal, as determined according to one of the following: The signaling sent by the second communication node; The number of time-domain symbols occupied by the PUCCH; The transmission mode for sending the PUCCH includes transmission diversity and retransmission; The number of transmit beam sets used by the terminal to send PUCCH.

20. The method according to claim 17, wherein the Y9 time-domain units satisfy at least one of the following characteristics: The first communication node transmits the uplink control channel using a transmit beam in each of the Y9 time-domain units, and the Y9 time-domain units correspond to the Y9 transmit beams; The first communication node repeatedly transmits the second control information in the Y9 time domain units.

21. The method of claim 16, wherein: When the uplink control channel includes multiple uplink control channel resource elements, the uplink control channel occupies the same demodulation reference signal port in the multiple uplink control channel resource elements.

22. The method of claim 16, wherein, X12 equals 1, Y12 equals 12.

23. The method of claim 16, wherein, The time-frequency domain position of the demodulation reference signal for the uplink control channel is obtained through one of the following methods: The first control information is used to determine whether the frequency domain resources occupied by the demodulation reference signal in one time domain symbol are continuous or discrete. The relevant parameters of the demodulation reference signal are determined based on the number of time-domain symbols of the uplink control channel; The relevant parameters of the demodulation reference signal are determined based on the number of transmit beams used to transmit the uplink control channel.

24. The method of claim 16, further comprising: Determine the frequency domain resource information of the uplink control channel; Send physical layer dynamic information, wherein the physical layer dynamic information includes the determined frequency domain resource information.

25. The method of claim 16, wherein, The resources occupied by the uplink control channel satisfy the following characteristics: The end domain symbol position and start frequency domain resources corresponding to the uplink control channel are obtained, as well as the number of uplink control channel resource units; multiple uplink control channel resource units are first mapped in the frequency domain and then mapped in the time domain.

26. The method of claim 16, wherein, The transmission parameters of the uplink control channel are obtained based on the time resource information of the data channel and the first control information, wherein the time resource information of the data channel and / or the first control information includes at least one of the following: The data channel or the time unit index information where the first control information is located; The data channel or the time-domain symbol index information where the first control information is located; The time unit index information where the time domain end position of the data channel or the first control information is located; The time-domain symbol index information of the time-domain end position of the data channel or the first control information.

27. The method of claim 16, wherein, The method further includes: The second communication node receives the CSI information fed back by the first communication node; The second communication node determines the demodulation reference signal information of the downlink channel of the first communication node based on the CSI information fed back by the first communication node, wherein the downlink channel includes at least one of the following: downlink control channel and downlink data channel.

28. The method of claim 27, wherein, The CSI information fed back by the first communication node includes the transmission resources corresponding to the first communication node, wherein the transmission resources include one or more of the following resources: transmission beam resources, transmission port resources, transmission precoding matrix resources, transmission time resources, transmission frequency domain resources, and transmission sequence resources.

29. The method of claim 28, wherein, The transmission resources and demodulation reference signal ports have a corresponding relationship, and the corresponding relationship satisfies at least one of the following relationships: there is a one-to-one correspondence between the transmission resources and the demodulation reference ports; there is a one-to-one correspondence between the transmission resources and the set of demodulation reference ports; multiple transmission resources correspond to the same demodulation reference port.

30. The method of claim 16, wherein, The second communication node sends the first control information, wherein the first control information includes information on the transmission mode used to notify the first communication node to send the uplink control channel, wherein different transmission modes are distinguished by at least one of the following information: transmission beam, measurement reference signal port information, time domain resources where the measurement reference signal is located, frequency domain resources where the measurement reference signal is located, and sequence resources used for the measurement reference signal.

31. A wireless communication apparatus comprising a processor and a memory storing computer program instructions, the processor configured to execute the computer program instructions to implement a method as claimed in any one of claims 1-30.

32. A computer readable storage medium having stored thereon computer program instructions that, when executed by a processor, implement a method as claimed in any one of claims 1-30.

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