Method, device and medium for obtaining and notifying group indication information

Abstract

The application provides a method, device and medium for obtaining and notifying grouping indication information, the method for obtaining the grouping indication information comprises: obtaining second-type grouping indication information from a first communication node, wherein the second-type grouping indication information comprises the following information: grouping index set information, grouping mode indication information, and resource information included in the grouping, wherein the grouping index set comprises at least one grouping index, thereby solving the problem that a reasonable and flexible management and scheduling of a sending beam and / or a receiving beam cannot be achieved in the related art, and achieving the effect of flexibly managing and scheduling the sending beam and / or the receiving beam.

Description

[0001] This application is a divisional application of the patent application with application number 201610848897.2 (the application date of the original application is September 23, 2016, and the name of the invention is feedback method, acquisition method and device for group indication information). Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a method, device and medium for obtaining and notifying group indication information. Background Art

[0003] High frequency is a key candidate for future fifth-generation mobile communication technology (5G). Its large available bandwidth promises to provide high-speed data transmission. However, compared to the low-frequency carriers used in related technologies like Long-Term Evolution (LTE), high frequency has unique transmission characteristics. Its most notable characteristic is significant path loss, which significantly impacts communication range. Furthermore, due to its relatively short wavelength, many antenna arrays can be placed in a relatively small area. This allows for the use of multiple antennas to form high-gain narrow beams, mitigate path loss, and increase cell coverage, making high frequency feasible for cellular communications.

[0004] However, different beams have different transmission characteristics, such as different reception methods, different reception performance, different transmission paths, different correlation characteristics, and different multiplexing methods. The relevant technologies cannot reasonably and flexibly manage and schedule the transmission beams.

[0005] For example, beam training is required between two nodes based on beam communication so that the transmitter (corresponding to the first communication node in the present invention) and the receiver (corresponding to the second communication node in the present invention) can communicate based on aligned beams. If there are multiple aligned transmit and receive beam pairs between the transmitter and the receiver, the transmitter schedules one or more of the multiple aligned beams based on system performance. The transmitter needs to notify the receiver of the transmit beam used to transmit data so that the receiver can use a suitable receive beam for reception. At this time, the beam used to transmit data and the transmit beam used in the beam training phase need to have high correlation and uniformity. Especially when multiple transmit beams correspond to one receive beam, such as in the downlink situation, this will greatly limit the transmitter's ability to flexibly adjust the transmit beam. In addition, how to perform spatial division multiplexing transmission based on the feedback information in the beam training phase is also an urgent problem to be solved.

[0006] Currently, no effective solution has been proposed to the problem in related technologies that it is impossible to reasonably and flexibly manage and schedule transmit beams and / or receive beams. Summary of the Invention

[0007] The embodiments of the present invention provide a method, device, and medium for obtaining and notifying group indication information, so as to at least solve the problem in the related art that it is impossible to reasonably and flexibly manage and schedule the transmission beam and / or reception beam.

[0008] According to one embodiment of the present invention, a signal receiving method is provided, comprising: determining M resources from a candidate resource set, dividing the M resources into N first-class resource groups, wherein M is an integer greater than or equal to 1, and N is a positive integer less than or equal to M; feeding back indication information for indicating the M resources and first-class grouping indication information for indicating that the M resources are divided into the N first-class resource groups to a first communication node; wherein the resources in the candidate resource set include at least one of the following resource types: transmitting beam resources, transmitting antenna resources, transmitting port resources, transmitting frequency domain resources, transmitting sequence resources, and transmitting time domain resources.

[0009] Optionally, determining M resources from the candidate resource set includes: determining the candidate resource set, wherein the candidate resource set includes Q second-category resource groups, where Q is an integer greater than or equal to 1; receiving a transmit signal sent on the candidate resource set; and determining the M resources from the candidate resource set based on the received transmit signal.

[0010] Optionally, the Q second-category resource groups in the candidate resource set are divided according to at least one of the following resource types: beam resources, antenna resources, port resources, frequency domain resources, transmission sequence resources, and time domain resources.

[0011] Optionally, the determining M resources from the candidate resource set includes: determining M resources from the candidate resource set according to channel quality and / or signal quality corresponding to the resources in the candidate resource set.

[0012] Optionally, it includes at least one of the following: resources in the same first-category resource group belong to one or more second-category resource groups; resources in the same second-category resource group belong to one or more first-category resource groups; the intersection of the N first-category resource groups is not an empty set.

[0013] Optionally, dividing the M resources into N first-class resource groups includes at least one of the following: dividing the M resources into the N first-class resource groups according to the receiving resources corresponding to the M resources; dividing the M resources into the N first-class resource groups according to the signal quality on the M resources or the channel quality corresponding to the M resources; dividing the M resources into the N first-class resource groups according to a predetermined multiplexing method; dividing the M resources into the N first-class resource groups according to the timing advance TA parameter; dividing the M resources into the N first-class resource groups according to the cyclic prefix CP length; dividing the M resources into the N first-class resource groups according to a quasi-co-location relationship; dividing the M resources into the N first-class resource groups according to the configuration information for grouping; dividing the M resources into the N first-class resource groups according to channel characteristics.

[0014] Optionally, dividing the M resources into the N first-class resource groups according to a predetermined multiplexing method includes: dividing the M resources into the N first-class resource groups according to a spatial division multiplexing method, wherein resources that cannot be spatially multiplexed are divided into the same first-class resource group, resources that can be spatially multiplexed are divided into different first-class resource groups, and the number of groups of the first-class resource groups is greater than or equal to the maximum number of layers of spatial division multiplexing; or, resources that can be spatially multiplexed are divided into the same first-class resource group, resources that cannot be spatially multiplexed are divided into different first-class resource groups, and the number of layers of spatial division multiplexing for resources within the same first-class resource group is less than or equal to the number of resources contained in the first-class resource group.

[0015] Optionally, it includes at least one of the following: one or more types of receiving resources are the same in the same first-category resource group, or one or more types of receiving resources in the same first-category resource group have a difference less than a predetermined threshold value, wherein the receiving resources include at least one of the following: receiving antenna resources, receiving port resources, receiving weight resources, receiving sector resources, receiving sequence resources, receiving time domain resources, receiving frequency domain resources, and receiving beam resources; the difference in channel quality corresponding to resources in the same first-category resource group is less than or equal to threshold R1, and the difference in channel quality corresponding to resources on different first-category resource groups is greater than threshold R2, wherein R1 or R2 is the same as the first The communication node pre-agreed or configured by the first communication node signaling; the difference in the quality of received signals corresponding to resources in the same first-class resource group is less than or equal to the threshold r1, and the difference in the quality of received signals corresponding to resources on different first-class resource groups is greater than the threshold r2, wherein r1 or r2 is pre-agreed with the first communication node or configured by the first communication node signaling; the set of multiplexing modes for sending signals on resources in the same first-class resource group is set A, and the set of multiplexing modes for sending signals on resources in different first-class resource groups is set B, wherein the set B is a true subset of the set A, or the set A is a true subset of the B set; the difference in TA parameters corresponding to when sending signals on resources within the same first-class resource group is less than or equal to a threshold T1, and the difference in TA parameters corresponding to when sending signals on resources of different first-class resource groups is greater than a threshold T2, wherein T1 or T2 is pre-agreed with the first communication node, or configured by signaling of the first communication node, or determined according to the configuration of the CP; the CP length used when sending signals on resources within the same first-class resource group is less than or equal to t1, and the CP length used when sending signals on resources in different first-class resource groups is greater than t2, wherein t1 or t2 is pre-agreed with the first communication node, or Configured by the signaling of the first communication node; resources in different first-category resource groups correspond to different CP lengths; resources in the same first-category resource group correspond to the same CP length; transmission signals corresponding to resources in the same first-category resource group are not allowed to be spatially multiplexed; transmission signals corresponding to resources in different first-category resource groups are allowed to be spatially multiplexed; the number of groups of the first-category resource groups is equal to the maximum number of layers that can be sent through spatial division multiplexing; transmission signals corresponding to resources in the first-category resource group are quasi-co-located; the channel characteristics corresponding to resources in the first-category resource group are the same; the channel characteristics of a resource in the first-category resource group can be obtained from the channel characteristics of other resources in the group.

[0016] Optionally, it includes at least one of the following: the configuration information includes at least one of the following: grouping restriction indication information, used to determine the threshold parameters of the grouping, used to determine the parameters of the grouping rules, wherein the configuration information is configured by the first communication node signaling, or is pre-agreed with the first communication node; the sending signals corresponding to the resources within the same first-class resource group are allowed to be spatially multiplexed; the sending signals corresponding to the resources within different first-class resource groups are not allowed to be spatially multiplexed; the number of layers of spatially multiplexed sending signals corresponding to the resources within the same first-class resource group is less than or equal to the number of resources contained in the group.

[0017] Optionally, the group restriction indication information includes: the number of resources contained in the same first-class resource group does not exceed a, and the number N of first-class resource groups does not exceed b, where a and b are both natural numbers greater than or equal to 1; or, the number of resources contained in the same first-class resource group is fixed to a, and the number N of first-class resource groups is fixed to b, where a and b are both natural numbers greater than or equal to 1.

[0018] Optionally, the method also includes: agreeing with the first communication node that the first type resource group includes at least one of the following characteristics: the same first type resource group corresponds to the same set of timing advance TA parameters; the same first type resource group corresponds to the same set of cyclic prefix CP parameters; the corresponding cyclic prefix CP length when different resources are sent simultaneously is determined according to the maximum absolute value of the resource group index difference of the first type resource group corresponding to the resource; different first type resource groups correspond to different cyclic prefix CP parameters; the receiving resources corresponding to the same first type resource group are the same; different receiving resources corresponding to different first type resource groups are generated in a time division manner; at least one type of channel or signal state parameter corresponding to the same first type resource group is the same; resources within the same first type resource group are allowed to be frequency-division multiplexed and / or space-division multiplexed and / or time-division multiplexed; resources of different first type resource groups cannot be frequency-division or space-division multiplexed, but can only be time-division multiplexed; resources within the same first type resource group correspond to the same index indication parameter.

[0019] Optionally, the same channel or signal state parameters include at least one of the following: the same rank indication RI, the same reference signal received power RSRP, the same channel quality indication CQI, the same received signal-to-noise ratio SNR, the same precoding matrix indication PMI, and the same channel reference signal CRI; and / or, the same index corresponding to the resources within the same first-category resource group includes at least one of the following: receiving beam index, receiving sector index, receiving antenna index, receiving sequence index, receiving port index, and receiving beam combination index.

[0020] Optionally, the method further includes: agreeing with the first communication node on the following feature: having the ability to simultaneously generate receiving modes corresponding to all first-category resource groups.

[0021] Optionally, the method also includes: agreeing with the first communication node that the first type of resource group includes one of the following characteristics: resources within the same first type of resource group are not allowed to be spatially multiplexed, resources within different first type of resource groups are allowed to be spatially multiplexed, and the maximum number of layers of spatial multiplexing is less than or equal to the number of first type resource groups; resources within the same first type of resource group are allowed to be spatially multiplexed, resources within different first type of resource groups are not allowed to be spatially multiplexed, and the number of layers of spatial multiplexing for resources within the same first type of resource group is less than or equal to the number of resources contained in the first type of resource group.

[0022] Optionally, it includes at least one of the following: in the first category grouping indication information, the resources in each group are arranged in sequence according to the reception quality of the resources; the first category grouping indication information includes at least one of the following information: group number information, resource information included in each group, resource number information included in each group, grouping mode indication information, grouping index information, and common parameter information corresponding to each group; the first category grouping indication information includes multi-level grouping; the first category grouping indication information includes two-level grouping, and a first-level group includes multiple second-level groups, wherein the second communication node for dividing the M resources into N first category resource groups has the ability to simultaneously generate receiving resources corresponding to different first-level groups or all first-level groups and to time-divide different receiving resources corresponding to multiple second-level groups included in the same first-level group, or to time-divide receiving resources corresponding to resources in different first-level groups and simultaneously generate receiving resources corresponding to different second-level groups or all second-level groups included in the same first-level group.

[0023] Optionally, it includes at least one of the following: a mapping relationship exists between the information on the number of packets and the resource information used to send the indication information and the indication information of the first type of packets; the resource information included in each first type of packet, wherein the resource information includes at least one of the following information: index information of the resource in the candidate resource set, channel quality indication CQI information corresponding to each resource; the common parameters corresponding to each first type of packet include at least one of the following parameters: cyclic prefix CP length information corresponding to each packet, precoding matrix indication PMI information corresponding to each packet, rank indication RI information corresponding to each packet, channel instruction indication CQI information corresponding to each packet, timing advance TA parameter information corresponding to each packet, quasi-co-location parameter information corresponding to each packet, and receiving resource information corresponding to each packet; the resource index set included in the jth packet in the indication information of the first type of packet is {b i,j -1,i=0,1,...,Lj-1}, where 1≤b i,j ≤TBN,b i,j <b i+1,j, the resource index set is used bits represent, The value of the bit is in TBN is the total number of resources included in the candidate resource set, 0≤j≤N-1, N is the number of groups of the first type of resources, Lj is the number of resources included in the jth group, It represents the number of different combinations of selecting B numbers from A numbers.

[0024] Optionally, the N value satisfies one of the following characteristics: the N value is a first agreed value; the N value is less than or equal to N_max, wherein N_max is a second agreed value.

[0025] Optionally, the method further includes: feeding back to the first communication node the maximum number of different receiving resources corresponding to different first-category resource groups that can be generated simultaneously.

[0026] Optionally, the uses of the resources in the candidate resource set include at least one of the following: receiving and / or sending synchronization signals; receiving and / or sending data signals; receiving and / or sending control signals; receiving and / or sending pilot signals.

[0027] Optionally, the number of resources included in different first-category groups is the same or different.

[0028] In another embodiment of the present invention, a method for obtaining group indication information is provided, including: obtaining second-category group indication information, wherein the second-category group indication information includes at least one of the following information: group index set information, group mode indication information, and resource information included in the group, wherein the group index set includes at least one group index.

[0029] Optionally, the method further includes: determining, according to the second-type grouping indication information, a sending parameter and / or a receiving parameter of a signal corresponding to the second-type grouping indication information.

[0030] Optionally, the corresponding signal includes at least one of the following signals: a control channel signal, a data channel signal, and a reference signal.

[0031] Optionally, obtaining the second-category group indication information includes at least one of the following: obtaining the second-category group indication information according to rules agreed upon with the first communication node; receiving semi-static signaling, and obtaining the second-category group indication information from the semi-static signaling; receiving dynamic signaling, and obtaining the second-category group indication information from the dynamic signaling; receiving system messages, and obtaining the second-category group indication information from the system messages.

[0032] Optionally, determining the sending parameters and / or receiving parameters of the signal corresponding to the second type of group indication information based on the second type of group indication information includes: determining a correspondence relationship pre-agreed with the first communication node, wherein the correspondence relationship is a correspondence relationship between the second type of group indication information and the sending parameters and / or receiving parameters; and determining the sending parameters and / or receiving parameters based on the second type of group indication information with reference to the correspondence relationship.

[0033] Optionally, the correspondence between the second type of grouping indication information and the sending parameters and / or the receiving parameters is included in the first type of grouping indication information fed back to the first communication node.

[0034] Optionally, the sending parameters include at least one of the following: the modulation and coding scheme MCS set corresponding to the signal, the multiplexing mode adopted by the signal, the cyclic prefix CP length corresponding to the signal, the number of spatial division multiplexing layers adopted by the signal, the demodulation reference signal port information adopted by the signal, the quasi-common reference signal resource information corresponding to the signal, and the structural information corresponding to the signal; wherein the structural information includes the CP length information of the starting symbol of the time unit and / or whether the starting position of the time unit includes information on the synchronization signal and / or the CP length of the last symbol of the time unit; the channel characteristic reference signal corresponding to the signal, the sending mode corresponding to the signal; and / or the receiving parameters include the receiving resources used to receive the signal.

[0035] Optionally, the grouping method indicated by the second type of grouping indication information includes at least one of the following methods: grouping according to the receiving resources corresponding to the resources in the candidate resource set, grouping according to the channel quality corresponding to the resources in the candidate resource set, grouping resources according to a predetermined multiplexing method, grouping according to the timing advance TA parameter, grouping according to the cyclic prefix CP length, grouping according to the space division multiplexing method, grouping according to the quasi-co-location relationship, grouping according to the sent measurement reference signal, and grouping according to channel characteristics.

[0036] Optionally, the receiving resources include at least one of the following resources: receiving beam, receiving antenna, receiving port, receiving precoding matrix, receiving time, receiving frequency domain, receiving sector, and receiving sequence.

[0037] Optionally, the resource information included in the group includes resource information of a reference signal, wherein the reference signal includes at least one of the following types: a demodulation reference signal, and a measurement reference signal resource.

[0038] Optionally, the channel characteristics and / or quasi-co-location information of resources in the same group are the same.

[0039] Optionally, there is a correspondence between the group index and port information of a measurement reference signal sent by the second communication node, wherein the second communication node is a communication node that acquires the second group indication information.

[0040] In another embodiment of the present application, a signal receiving method is provided, comprising: acquiring third type group indication information; receiving a demodulation reference signal and / or a control channel according to the third type group indication information.

[0041] Optionally, the third type group indication information comprises at least one of the following: group number information, resource information included in each group, resource number information included in each group, group mode indication information, and group index information.

[0042] Optionally, acquiring the third type group indication information comprises at least one of the following methods: acquiring feedback information according to a signal sent by a first communication node, wherein the feedback information comprises the third type group indication information; acquiring the third type group indication information according to a rule agreed with the first communication node; and receiving signaling information, wherein the signaling information comprises the third type group indication information.

[0043] Optionally, receiving the demodulation reference signal and / or the control channel according to the third type group indication information comprises: receiving the demodulation reference signal and / or the control channel on N1 resources in time division according to the third type group indication information, wherein N1=x×N, or N1 is less than or equal to N, N1 is an integer greater than 0, N is a third type group number contained in the third type group indication information, and x is an integer greater than or equal to 1.

[0044] Optionally, the method comprises: receiving the demodulation reference signal and / or the control channel using a receiving resource in a receiving resource set on the N1 resources on which the demodulation reference signal is sent; and / or selecting one or more receiving resources in the receiving resource set according to a certain rule, and receiving data, and / or a control signal, and / or a reference signal after the demodulation reference signal according to the selected receiving resource.

[0045] Optionally, the method further comprises: obtaining the receiving resource set by at least one of the following methods: the receiving resource set is composed of receiving resources corresponding to all groups indicated by the third type group indication information; the receiving resource set is composed of receiving resources corresponding to N2 group indexes agreed with the first communication node, wherein N2 is an integer greater than or equal to 1; and the receiving resource set is determined by acquiring signaling indication information.

[0046] Optionally, the receiving resource comprises at least one of the following: a receiving beam, a receiving antenna, a receiving port, a receiving precoding matrix, a receiving time, a receiving frequency domain, a receiving sector, a receiving sequence.

[0047] Optionally, before receiving the demodulation reference signal and / or control channel according to the third type of grouping indication information on the N1 time-division resources, the method further comprises: obtaining the x and / or the N1. The obtaining of the x and / or the N1 comprises at least one of the following: obtaining according to an agreement with the first communication node; obtaining through semi-static signaling configuration; obtaining through dynamic signaling configuration.

[0048] Optionally, the receiving of the demodulation reference signal and / or control channel according to the third type of grouping indication information comprises: receiving the demodulation reference signal and / or control channel according to the third type of indication information on an agreed time unit, and receiving the demodulation reference signal and / or control channel only on one time-division resource on a non-agreed time unit.

[0049] In another embodiment of the present application, a receiving method of feedback information is also provided, comprising: receiving feedback information from a second communication node, wherein the feedback information comprises indication information for indicating M resources selected by the second communication node and first type of grouping indication information for indicating that the second communication node divides the M resources into N first type of resource groups; performing resource scheduling according to the feedback information, and / or performing signal transmission according to the feedback information; wherein the N and M are integers, N is less than or equal to M, and the M resources are selected from a candidate resource set.

[0050] Optionally, before receiving the feedback information from the second communication node, the method further comprises at least one of the following: sending signals corresponding to all or part of the resources in the candidate resource set to the second communication node; sending the following information at least one of which determines the first type of resource grouping indication information to the second communication node: grouping limit indication information, parameters for determining grouping rules, threshold parameters for determining grouping, configuration indication information of the candidate resource set, and grouping manner indication information.

[0051] Optionally, the grouping manner indicated by the first type of grouping indication information comprises at least one of the following: grouping according to the receiving resource corresponding to the resource; grouping according to the channel quality corresponding to the resource; grouping according to the predetermined multiplexing manner; grouping according to the timing advance (TA) parameter; grouping according to the cyclic prefix (CP) length; grouping according to the spatial division multiplexing manner; and grouping according to the quasi co-location relationship.

[0052] Optionally, grouping according to a predetermined multiplexing method includes grouping according to a space division multiplexing method. The receiving resources include at least one of the following resources: receiving beam, receiving antenna, receiving port, receiving precoding matrix, receiving time, receiving frequency domain, receiving sector, and receiving sequence.

[0053] Optionally, the first-class resource group includes at least one of the following: the timing advance TA values ​​corresponding to the same first-class resource group are the same; different first-class resource groups correspond to different timing advance TA values; resources in the same first-class resource group are allowed to be scheduled in the same time unit; some or all resources in the same first-class resource group are allowed to be scheduled in the same time unit; different first-class resource groups are scheduled in different time units and cannot be scheduled in the same time unit; the multiplexing method of resources in the same first-class resource group is set A, and the multiplexing method of resources in different first-class resource groups is set B, wherein the set B is a true subset of the set A, or the set A is a true subset of the set B; resources in the same first-class resource group cannot be space-division multiplexed in the same time unit, and resources in different first-class resource groups are allowed to be space-division multiplexed in the same time unit. Space division multiplexing, wherein the number of layers of space division multiplexing is less than or equal to the number of first-category resource groups; when resources in the same first-category resource group are scheduled simultaneously in the same time unit, or when resources in the same first-category resource group are switched in different time units, a first cyclic prefix CP length is adopted; when resources in different first-category resource groups are scheduled in the same time unit, a second CP length is adopted; when the scheduled resources are switched between different first-category resource groups or first-category resource combinations, the starting orthogonal frequency division multiplexing OFDM symbol of the switching adopts a third CP length, and / or the starting position of the switching has a synchronization signal for the receiving timing of the second communication node, and / or the last OFDM symbol before the switching adopts the third CP length; the quasi-co-location of the same first-category resource group is the same, and all resources in the same first-category resource group share a quasi-co-location reference signal.

[0054] Optionally, it includes at least one of the following: resources in the same first-class resource group are allowed to be spatially multiplexed in the same time unit, wherein the number of layers of spatial multiplexing is less than or equal to the number of resources included in the first-class resource group, and resources in different first-class resource groups cannot be spatially multiplexed in the same time unit; the corresponding CP length of resources in different first-class resource groups scheduled in the same time unit is obtained according to the difference in the index of the resource group where the resources are located.

[0055] Optionally, the third CP length is greater than the first CP length and the second CP length.

[0056] In another embodiment of the present application, a method for informing grouping indication information is provided, comprising: determining second-type grouping indication information; and informing the second-type grouping indication information to a second communication node, wherein the second-type grouping indication information comprises at least one of the following: grouping index set information, grouping manner indication information, and resource information included in a group, and wherein the second-type grouping index set comprises at least one grouping index.

[0057] Optionally, informing the second-type grouping indication information to the second communication node comprises at least one of the following: agreeing on the second-type grouping indication information with the second communication node; sending the second-type grouping indication information to the second communication node through semi-static signaling; sending the second-type grouping indication information to the second communication node through dynamic signaling; and sending the second-type grouping indication information to the second communication node through a system message.

[0058] Optionally, the second-type grouping indication information is used by the second communication node to determine at least one of the following: a transmission parameter and / or a reception parameter of a signal corresponding to the second-type grouping indication information; the transmission parameter comprises at least one of the following: a MCS set corresponding to the signal, a multiplexing manner used by the signal, a CP length corresponding to the signal, a number of spatial multiplexing layers used by the signal, demodulation reference signal port information used by the signal, quasi co-reference signal resource information corresponding to the signal, structure information corresponding to the signal, channel characteristic reference signal resource corresponding to the signal, and a transmission manner of the signal; the structure information comprises CP length information of a starting symbol of a time unit and / or information of whether a starting position of a time unit comprises a synchronization signal and / or CP length of a last symbol of a time unit; and the reception parameter comprises a reception resource used for receiving the signal.

[0059] Optionally, the signal comprises at least one of the following: a data channel signal, a control channel signal, and a reference signal.

[0060] Optionally, before the second-type grouping indication information is sent to the second communication node, the method further comprises: determining a correspondence between the second-type grouping indication information and a parameter, wherein the parameter comprises the transmission parameter and / or the reception parameter.

[0061] Optionally, determining the correspondence between the second-type grouping indication information and the parameter comprises at least one of the following: determining the correspondence between the second-type grouping indication information and the parameter through an agreed manner with the second communication node; determining the correspondence between the second-type grouping indication information and the parameter through receiving first-type grouping indication information fed back by the second communication node; and sending the correspondence to the second communication node.

[0062] Optionally, determining the correspondence between the second type of grouping indication information and the parameters by an agreement with the second communication node includes: obtaining the correspondence between the second type of grouping indication information and the parameters based on a measurement reference signal sent by the second communication node.

[0063] Optionally, the first type of group indication information includes at least one of the following: group number information, resource information included in each group, resource number information included in each group, grouping mode indication information, grouping index information, and common parameter information corresponding to each group.

[0064] Optionally, the common parameters corresponding to each group include at least one of the following parameters: cyclic prefix CP length information corresponding to each group, precoding matrix indication PMI information corresponding to each group, rank indication RI information corresponding to each group, channel instruction indication CQI information corresponding to each group, timing advance TA parameter information corresponding to each group, quasi-co-location parameter information corresponding to each group, and receiving resource information corresponding to each group.

[0065] Optionally, the grouping method indicated by the second grouping indication information includes at least one of the following methods: grouping according to the receiving resources corresponding to the sending resources, grouping according to the channel quality corresponding to the sending resources, resource grouping according to a predetermined multiplexing method, grouping according to the timing advance TA parameter, grouping according to the cyclic prefix CP length, grouping according to the spatial division multiplexing method, grouping according to the quasi-co-location relationship, grouping according to the measurement reference signal sent by the second communication node, and grouping according to channel characteristics; wherein the sending resources include one or more of the following resource types: sending beam resources, sending antenna resources, sending port resources, sending frequency domain resources, sending sequence resources, and sending time domain resources.

[0066] Optionally, the receiving resources include at least one of the following resources: receiving beam, receiving antenna, receiving port, receiving precoding matrix, receiving time, receiving frequency domain, receiving sector, and receiving sequence.

[0067] Optionally, the resource information included in the group includes resource information of a reference signal, wherein the reference signal includes at least one of the following types: a demodulation reference signal, and a measurement reference signal resource.

[0068] Optionally, the channel characteristics and / or quasi-co-location information of resources in the same group are the same.

[0069] Optionally, there is a correspondence between the group index and the port information of the measurement reference signal sent by the second communication node.

[0070] In another embodiment of the present invention, a signal sending method is provided, including: determining third-type grouping indication information; and sending a demodulation reference signal and / or a control channel according to the third-type grouping indication information.

[0071] Optionally, the third type of group indication information includes at least one of the following: group number information, resource information included in each group, resource number information included in each group, grouping mode indication information, and grouping index information.

[0072] Optionally, determining the third category grouping indication information includes at least one of the following: determining the third category grouping indication information based on the first category grouping indication information received from the second communication node; determining the third category grouping indication information based on rules agreed upon with the second communication node.

[0073] Optionally, sending the demodulation reference signal and / or control channel according to the third type of grouping indication information includes: sending the demodulation reference signal and / or control channel information on N1 resources in time division according to the third type of grouping indication information, where N1 = x×N, or N1 is less than or equal to N, N1 is an integer greater than 0, N is the number of groups information, and x is an integer greater than or equal to 1.

[0074] Optionally, before sending the demodulation reference signal and / or control channel information according to the third type of grouping indication information, the method further includes: informing the second communication node of the x and / or the N1.

[0075] Optionally, informing the second communication node of x and / or N1 includes at least one of the following methods: informing the second communication node of x and / or N1 in a manner agreed upon with the second communication node; sending the x and / or N1 to the second communication node through semi-static signaling; sending the x and / or N1 to the second communication node through dynamic signaling.

[0076] Optionally, the demodulation reference signals on the N1 resources are sent in the same manner, wherein the demodulation reference signal is sent in at least one of the following manners: sending beam, sending port, sending antenna, sending precoding matrix, and sending frequency domain resources.

[0077] Optionally, the demodulation reference signal and / or control channel on the N1 resources is sent in the same manner as the data and / or control signal and / or reference signal sent after the demodulation reference signal and / or control channel, wherein the sending manner of the demodulation reference signal includes at least one of the following manners: sending beam, sending port, sending antenna, sending precoding matrix, and sending frequency domain resources.

[0078] Optionally, sending the demodulation reference signal and / or control channel according to the third type of grouping indication information includes sending the demodulation reference signal and / or control channel according to the third type of grouping indication information in an agreed time unit, and sending the demodulation reference signal and / or control channel only on one time-division resource in an unagreed time unit.

[0079] In another embodiment of the present invention, a feedback device for grouping indication information is also provided, including: a first determination module, used to determine M resources from a candidate resource set, and divide the M resources into N first-class resource groups, wherein M is an integer greater than or equal to 1, and N is a positive integer less than or equal to M; a first sending module, used to feed back indication information for indicating the M resources and first-class grouping indication information for indicating that the M resources are divided into the N first-class resource groups to a first communication node; wherein the resources in the candidate resource set include at least one of the following resource types: transmitting beam resources, transmitting antenna resources, transmitting port resources, transmitting frequency domain resources, transmitting sequence resources, and transmitting time domain resources.

[0080] Optionally, the first determination module determines M resources from the candidate resource set in the following manner: determining the candidate resource set, wherein the candidate resource set includes Q second-category resource groups, Q is an integer greater than or equal to 1; receiving a transmission signal sent on the candidate resource set; and determining the M resources from the candidate resource set based on the received transmission signal.

[0081] Optionally, the first determination module divides the M resources into N first-class resource groups in at least one of the following ways: dividing the M resources into the N first-class resource groups according to the receiving resources corresponding to the M resources; dividing the M resources into the N first-class resource groups according to the signal quality on the M resources or the channel quality corresponding to the M resources; dividing the M resources into the N first-class resource groups according to a predetermined multiplexing method; dividing the M resources into the N first-class resource groups according to the timing advance TA parameter; dividing the M resources into the N first-class resource groups according to the cyclic prefix CP length; dividing the M resources into the N first-class resource groups according to a quasi-co-location relationship; dividing the M resources into the N first-class resource groups according to the configuration information for grouping; dividing the M resources into the N first-class resource groups according to channel characteristics.

[0082] Optionally, the first determination module divides the M resources into the N first-class resource groups according to a predetermined multiplexing method in the following manner: dividing the M resources into the N first-class resource groups according to a spatial division multiplexing method, wherein resources that cannot be spatially multiplexed are divided into the same first-class resource group, resources that can be spatially multiplexed are divided into different first-class resource groups, and the number of groups of the first-class resource groups is greater than or equal to the maximum number of layers of spatial division multiplexing; or, resources that can be spatially multiplexed are divided into the same first-class resource group, resources that cannot be spatially multiplexed are divided into different first-class resource groups, and the number of layers of spatial division multiplexing for resources in the same first-class resource group is less than or equal to the number of resources contained in the first-class resource group.

[0083] In another embodiment of the present invention, a device for obtaining group indication information is also provided, including: a first acquisition module, used to obtain second-category group indication information, wherein the second-category group indication information includes at least one of the following information: group index set information, group mode indication information, and resource information included in the group, wherein the group index set includes at least one group index.

[0084] Optionally, the device further includes a first processing module, configured to determine, according to the second-type grouping indication information, a sending parameter and / or a receiving parameter of a signal corresponding to the second-type grouping indication information.

[0085] Optionally, the first processing module determines the sending parameters and / or receiving parameters of the signal corresponding to the second type of group indication information in the following manner: determining a correspondence relationship pre-agreed with the first communication node, wherein the correspondence relationship is a correspondence relationship between the second type of group indication information and the sending parameters and / or receiving parameters; and determining the sending parameters and / or receiving parameters according to the second type of group indication information with reference to the correspondence relationship.

[0086] Optionally, the correspondence between the second type of grouping indication information and the sending parameters and / or the receiving parameters is included in the first type of grouping indication information fed back to the first communication node.

[0087] In another embodiment of the present invention, a signal receiving device is provided, including: a second acquisition module for acquiring third-type grouping indication information; and a first receiving module for receiving a demodulation reference signal and / or a control channel according to the third-type grouping indication information.

[0088] Optionally, the third type of group indication information includes at least one of the following: group number information, resource information included in each group, resource number information included in each group, grouping mode indication information, and grouping index information.

[0089] Optionally, the second acquisition module obtains the third category group indication information through at least one of the following methods: obtaining feedback information based on a signal sent by the first communication node, the feedback information including the third category group indication information; obtaining the third category group indication information according to rules agreed with the first communication node; receiving signaling information, the signaling information including the third category group indication information.

[0090] Optionally, the first receiving module receives the demodulation reference signal and / or control channel in the following manner: receiving the demodulation reference signal and / or control channel on N1 resources in time division according to the third-category grouping indication information, where N1=x×N, or N1 is less than or equal to N, N1 is an integer greater than 0, N is the number of third-category groups contained in the third-category grouping indication information, and x is an integer greater than or equal to 1.

[0091] In another embodiment of the present invention, a device for receiving feedback information is also provided, including: a second receiving module, used to receive feedback information from a second communication node, wherein the feedback information includes indication information for indicating the M resources selected by the second communication node and first-class grouping indication information for indicating the second communication node to divide the M resources into N first-class resource groups; a second sending module, used to perform resource scheduling according to the feedback information, and / or send signals according to the feedback information; wherein, N and M are both integers, N is less than or equal to M, and the M resources are selected from a set of candidate resources.

[0092] Optionally, the grouping method indicated by the first type of grouping indication information includes at least one of the following: grouping according to the receiving resources corresponding to the resources; grouping according to the channel quality corresponding to the resources; grouping according to a predetermined multiplexing method; grouping according to the timing advance TA parameter; grouping according to the cyclic prefix CP length; grouping according to the space division multiplexing method; and grouping according to a quasi-co-location relationship.

[0093] In another embodiment of the present invention, a device for notifying group indication information is also provided, including: a second determination module, used to determine the second type of group indication information; a third sending module, used to notify the second type of group indication information to the second communication node, wherein the second type of group indication information includes at least one of the following information: group index set information, group mode indication information, resource information included in the group, wherein the second type of group index set includes at least one group index.

[0094] Optionally, the third sending module informs the second communication node of the second type of group indication information in at least one of the following ways: agreeing on the second type of group indication information with the second communication node; sending the second type of group indication information to the second communication node through semi-static signaling; sending the second type of group indication information to the second communication node through dynamic signaling; sending the second type of group indication information to the second communication node through a system message.

[0095] In another embodiment of the present invention, a signal sending device is further provided, including: a third determination module, used to determine third type grouping indication information; and a fourth sending module, used to send a demodulation reference signal and / or a control channel according to the third type grouping indication information.

[0096] Optionally, the third type of group indication information includes at least one of the following: group number information, resource information included in each group, resource number information included in each group, grouping mode indication information, and grouping index information.

[0097] According to another embodiment of the present invention, a storage medium is provided, which is configured to store program codes for executing the above steps.

[0098] The present invention groups transmit resources into groups and then provides feedback to the transmit end. Resources within the same group share certain common characteristics, while resources in different groups have different characteristics. This limited feedback information provides the transmit end with more information, improving scheduling flexibility and enabling the transmit end to manage these resources effectively and efficiently. This solves the problem of inability to manage and schedule transmit beams effectively and efficiently in related technologies, achieving flexible management and scheduling of transmit beams. BRIEF DESCRIPTION OF THE DRAWINGS

[0099] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0100] Figure 1 is a block diagram of the hardware structure of a mobile terminal for signal reception according to an embodiment of the present invention;

[0101] Figure 2 is a flow chart of a method for feeding back group indication information according to an embodiment of the present invention;

[0102] Figure 3 is a flowchart of a method for obtaining group indication information according to an embodiment of the present invention;

[0103] Figure 4is a flowchart of a signal receiving method according to an embodiment of the present invention;

[0104] Figure 5 is a flowchart of a method for receiving feedback information according to an embodiment of the present invention;

[0105] Figure 6 is a flowchart of a method for notifying group indication information according to an embodiment of the present invention;

[0106] Figure 7 is a flowchart of a signal sending method according to an embodiment of the present invention;

[0107] Figure 8 is an example diagram of hybrid beamforming according to an embodiment of the present invention;

[0108] Figure 9 This is an example of the second type of resource group according to an embodiment of the present invention. Figure 1 ;

[0109] Figure 10 This is an example of the second type of resource group according to an embodiment of the present invention. Figure 2 ;

[0110] Figure 11 This is an example of the second type of resource group according to an embodiment of the present invention. Figure 3 ;

[0111] Figure 12 This is an example of the second type of resource group according to an embodiment of the present invention. Figure 4 ;

[0112] Figure 13 This is an example of the second type of resource group according to an embodiment of the present invention. Figure 5 ;

[0113] Figure 14 This is an example of the composition of the first type of resource group according to an embodiment of the present invention. Figure 1 ;

[0114] Figure 15a This is an example of the composition of the first type of resource group and the receiving resource according to an embodiment of the present invention. Figure 1 ;

[0115] Figure 15b This is an example of the composition of the first type of resource group and the receiving resource according to an embodiment of the present invention. Figure 2 ;

[0116] Figure 16a This is an example diagram of free switching of transmit beams in the same group during the transmission phase after feedback according to an embodiment of the present invention;

[0117] Figure 16bis an example diagram of the combination free switching of the same group transmission beams in the transmission phase after the feedback according to the embodiment of the application;

[0118] Figure 17 is an example diagram of the different resource transmission modes in the candidate resource set according to the embodiment of the application;

[0119] Figure 18a is an example diagram of the first type resource grouping of the subbands of the same receiving mode according to the embodiment of the application Figure 1 ;

[0120] Figure 18b is an example diagram of the first type resource grouping of the subbands of the same receiving mode according to the embodiment of the application Figure 1 ;

[0121] Figure 18c is an example diagram of the same group subband free scheduling in the transmission phase after the feedback according to the embodiment of the application, and the different group subbands cannot be scheduled at the same time;

[0122] Figure 19 is an example diagram of the first type resource grouping according to the embodiment of the application Figure 1 ;

[0123] Figure 20 is an example diagram of the first type resource grouping according to the embodiment of the application Figure 2 ;

[0124] Figure 21 is an example diagram of the first type resource grouping according to the embodiment of the application Figure 3 ;

[0125] Figure 22a is an example diagram of the first type resource grouping according to the TA information according to the embodiment of the application;

[0126] Figure 22b is an example diagram of the first type resource grouping according to the CP information according to the embodiment of the application;

[0127] Figure 22c is an example of the different CPs according to the grouping information of the resources in the transmission phase after the feedback according to the embodiment of the application Figure 1 ;

[0128] Figure 22d is an example of the different CPs according to the grouping information of the resources in the transmission phase after the feedback according to the embodiment of the application Figure 2 ;

[0129] Figure 22e is an example of the different CPs according to the grouping information of the resources in the transmission phase after the feedback according to the embodiment of the application Figure 3 ;

[0130] Figure 22f This is an example of using different CPs according to the group information of the resource in the transmission phase after feedback according to an embodiment of the present invention. Figure 4 ;

[0131] Figure 22g This is an example of using different CPs according to the group information of the resource in the transmission phase after feedback according to an embodiment of the present invention. Figure 5 ;

[0132] Figure 22h This is an example diagram of using long CPs at the beginning and end of a time unit according to an embodiment of the present invention;

[0133] Figure 23a This is an example of sending a reference signal according to the number of resource groups of the third type according to an embodiment of the present invention. Figure 1 ;

[0134] Figure 23b This is an example of sending a reference signal according to the number of resource groups of the third type according to an embodiment of the present invention. Figure 2 ;

[0135] Figure 23c This is an example of sending a reference signal according to the number of resource groups of the third type according to an embodiment of the present invention. Figure 3 ;

[0136] Figure 23d This is an example of sending reference signals and control information according to the number of resource groups of the third type according to an embodiment of the present invention. Figure 1 ;

[0137] Figure 23e This is an example of sending reference signals and control information according to the number of resource groups of the third type according to an embodiment of the present invention. Figure 2 ;

[0138] Figure 24a This is an example of a grouping of the first type of resource group according to an embodiment of the present invention. Figure 4 ;

[0139] Figure 24b This is an example of a grouping of the first type of resource group according to an embodiment of the present invention. Figure 5 ;

[0140] Figure 24c This is an example of a grouping of the first type of resource group according to an embodiment of the present invention. Figure 6 ;

[0141] Figure 24d This is an example diagram of a signaling notification method for the second type of packet information;

[0142] Figure 24e is a mapping relationship diagram between the number of first-class packets and the feedback resource for sending first-class packet indication information;

[0143] Figure 24f This is an example of receiving resources or receiving mode as time domain resources. Figure 1 ;

[0144] Figure 24g This is an example of receiving resources or receiving mode as time domain resources. Figure 2 ;

[0145] Figure 25 2 is a structural block diagram of a device for feeding back first-type group indication information according to an embodiment of the present invention;

[0146] Figure 26 is a structural block diagram of an apparatus for obtaining second-category grouping indication information according to an embodiment of the present invention;

[0147] Figure 27 is a structural block diagram of a signal receiving device according to an embodiment of the present invention;

[0148] Figure 28 is a structural block diagram of a device for receiving feedback information according to an embodiment of the present invention;

[0149] Figure 29 is a structural block diagram of a device for notifying second-type grouping indication information according to an embodiment of the present invention;

[0150] Figure 30 is a structural block diagram of a signal sending device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0151] The following describes the embodiments of the present application in conjunction with the accompanying drawings. The following describes the present application in conjunction with the accompanying drawings of the embodiments. The examples given are only used to explain the present application and are not used to limit the scope of the present application. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless there is a conflict.

[0152] It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0153] The method embodiments provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 : is a hardware structure diagram of a mobile terminal for signal reception according to an embodiment of the present invention (it can also be a mobile terminal for obtaining signal parameters). Figure 1 As shown, the mobile terminal 10 may include one or more ( Figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a microprocessor MCU or a programmable logic device FPGA, etc.), a memory 104 for storing data, and a transmission device 106 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 1 More or fewer components than shown, or with Figure 1 Different configurations shown.

[0154] The memory 104 can be used to store software programs and modules of application software, such as the program instructions / modules corresponding to the signal receiving method in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the software programs and modules stored in the memory 104, that is, implementing the above-mentioned method. The memory 104 may include a high-speed random access memory and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely located relative to the processor 102, and these remote memories may be connected to the mobile terminal 10 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0155] The transmission device 106 is configured to receive or transmit data via a network. A specific example of the aforementioned network may include a wireless network provided by the telecommunications provider of the mobile terminal 10. In one embodiment, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, the transmission device 106 may be a radio frequency (RF) module, which is configured to communicate with the Internet wirelessly.

[0156] In this embodiment, a method for feeding back grouping indication information is provided. Figure 2 FIG. 1 is a flow chart of a method for feeding back group indication information according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0157] Step S202: determine M resources from the candidate resource set, and divide the M resources into N first-category resource groups, where M is an integer greater than or equal to 1, and N is a positive integer less than or equal to M;

[0158] Step S204: Feedback indication information for indicating the M resources and first-category grouping indication information for dividing the M resources into N first-category resource groups to the first communication node.

[0159] Among them, the resources in the above-mentioned candidate resource set include at least one of the following resource types: transmission beam resources, transmission antenna resources, transmission port resources, transmission frequency domain resources, transmission sequence resources, and transmission time domain resources.

[0160] The second communication node (eg, user equipment (UE), also referred to as a terminal) may perform the above operations. The first communication node may be a base station.

[0161] Through the above steps, the transmission resources can be grouped and then fed back to the first communication node. Resources within the same group have certain common characteristics, while resources in different groups have different characteristics. Limited feedback information is used to provide the transmitting end with more information, thereby improving the scheduling flexibility of the first communication node and enabling the first communication node to reasonably and effectively manage the resources. Therefore, the problem of the inability to reasonably and flexibly manage and schedule transmission beams and / or reception beams, which exists in related technologies, can be solved, achieving the effect of flexible management and scheduling of transmission beams and / or reception beams.

[0162] In an optional embodiment, the second communication node can determine M resources from the above-mentioned candidate resource set, including: determining a candidate resource set, wherein the candidate resource set includes Q second-category resource groups, Q is an integer greater than or equal to 1; receiving a transmission signal sent on the above-mentioned candidate resource set; and determining the above-mentioned M resources from the candidate resource set based on the received above-mentioned transmission signal.

[0163] In an optional embodiment, the Q second-category resource groups in the candidate resource set can be divided according to at least one of the following resource types: beam resources, antenna resources, port resources, frequency domain resources, transmission sequence resources, and time domain resources. In this embodiment, different beam resources may be different second-category resource groups; different port resources may be different second-category resource groups; different time / frequency resources may be different second-category resource groups; different sequence resources may be different second-category resource groups; different beams and port resources may be different second-category resource groups; and different beams and time / frequency resources may be different second-category resource groups. Optionally, the uses of the above-mentioned resources include at least one of the following: receiving / transmitting synchronization signals, receiving / transmitting data signals, receiving / transmitting control signals, and receiving / transmitting pilot signals.

[0164] In an optional embodiment, determining M resources from the candidate resource set includes: determining M resources from the candidate resource set according to channel quality and / or signal quality corresponding to the resources in the candidate resource set.

[0165] In an optional embodiment, at least one of the following is included: resources in the same first-category resource group belong to one or more second-category resource groups, for example, a channel state information reference symbol resource (Channel State Information-Reference Signal resource, abbreviated as CSI-RS) corresponds to a second-category resource group, multiple ports in a CSI-RS resource correspond to resources included in a second-category resource group, and resources in the same first-category resource group can be composed of ports in one or more CSI-RS resources. Preferably, at this time, different CSI-RS resources correspond to different sending nodes, and different ports in the same CSI-RS resource can correspond to different sending beams of the sending node. Resources in the same second-category resource group belong to one or more first-category resource groups. For example, assuming that the transmission beams {1, 2, 3, 4, 5} constitute a candidate resource set, each transmission beam is a second-category resource group. When finally divided into two first-category resource groups, the transmission beams {1, 2, 3} can be one first-category resource group and the transmission beams {1, 4, 5} can be another first-category resource group. Then, transmission beam 1 can correspond to multiple first-category resource groups; the intersection of different resource groups in the above N first-category resource groups may not be an empty set.

[0166] In an optional embodiment, dividing the M resources into N first-class resource groups includes at least one of the following: dividing the M resources into N first-class resource groups based on the received resources corresponding to the M resources; dividing the M resources into N first-class resource groups based on the signal quality of the M resources or the channel quality corresponding to the M resources; dividing the M resources into N first-class resource groups based on a predetermined multiplexing mode; dividing the M resources into N first-class resource groups based on a timing advance (TA) parameter; dividing the M resources into N first-class resource groups based on a cyclic prefix (CP) length; dividing the M resources into N first-class resource groups based on a quasi-co-location relationship; dividing the M resources into N first-class resource groups based on configuration information for grouping; and dividing the M resources into the N first-class resource groups based on channel characteristics (the channel characteristics may also be referred to as quasi-co-beam, quasi-co-channel, or other equivalent terms). In this embodiment, the predetermined multiplexing mode may include a recommended multiplexing mode, a general multiplexing mode, or a space division multiplexing mode.

[0167] In an optional embodiment, dividing M resources into N first-class resource groups according to a predetermined multiplexing method includes: dividing M resources into N first-class resource groups according to a spatial division multiplexing method, wherein resources that cannot be spatially multiplexed are divided into the same first-class resource group, resources that can be spatially multiplexed are divided into different first-class resource groups, and the number of groups of the first-class resource groups is greater than or equal to the maximum number of layers of spatial division multiplexing; or, resources that can be spatially multiplexed are divided into the same first-class resource group, resources that cannot be spatially multiplexed are divided into different first-class resource groups, and the number of layers of spatial division multiplexing for resources within the same first-class resource group is less than or equal to the number of resources included in the first-class resource group. In this embodiment, the fact that two resources can be spatially multiplexed means that the two resources can perform multi-stream transmission, and different resources transmit different data information. The above-mentioned permission of spatial division multiplexing means that in the subsequent transmission stage, the first communication node can use different resources to send data to the second communication node through spatial division multiplexing. The above-mentioned disallowance of spatial division multiplexing means that in the subsequent transmission stage, the first communication node cannot use different resources to send data to the second communication node through spatial division multiplexing. There is no such restriction when the first communication node uses the different resources to send information to the second communication node and one or more third communication nodes.

[0168] In an optional embodiment, the above method includes at least one of the following: one or more types of receiving resources are the same in the same first-category resource group, or the difference between one or more types of receiving resources in the same first-category resource group is less than a predetermined threshold value (the difference in the receiving resources indicates that the receiving resources are different, but there is partial overlap, or for example, the distance between the receiving resources is less than the threshold, such as the vector distance between the vectors of the receiving weights) (for example, the correlation of the receiving sequence is less than the agreed threshold, and / or the correlation of the receiving beam is less than the agreed threshold), wherein the above-mentioned receiving resource type includes at least one of the following: receiving antenna resources, receiving port resources, receiving weight resources, receiving sector resources, receiving sequence resources, Receive time domain resources, receive frequency domain resources, receive beam resources (the receiving resources involved in each embodiment of the present invention may include at least one of the above); the difference in channel quality corresponding to resources in the same first-class resource group is less than or equal to the threshold R1 (the difference in channel quality represents the absolute value of the difference between the channel quality measurement values ​​corresponding to different resources), and the difference in channel quality corresponding to resources in different first-class resource groups is greater than the threshold R2, wherein R1 or R2 is pre-agreed with the first communication node (can be pre-agreed by the first communication node and the second communication node), or is configured by the first communication node signaling (wherein R1 and R2 may be the same); the difference in received signal quality corresponding to resources in the same first-class resource group is small The difference in received signal quality is greater than or equal to a threshold r1 (the difference in received signal quality represents the absolute value of the difference between received signal quality measurement values ​​corresponding to different resources), and the difference in received signal quality corresponding to resources on different first-type resource groups is greater than a threshold r2, where r1 or r2 is pre-agreed with the first communication node or configured by signaling from the first communication node (wherein r1 and r2 may be the same); the set of multiplexing modes used when sending signals on resources within the same first-type resource group is set A, and the set of multiplexing modes used when sending signals on resources in different first-type resource groups is set B, where the above-mentioned set B is a proper subset of set A, or set A is a proper subset of set B (wherein set A and set B are different sets); The difference in TA parameters corresponding to signals sent on resources within the same first-type resource group is less than or equal to a threshold T1, and the difference in TA parameters corresponding to signals sent on resources of different first-type resource groups is greater than a threshold T2, where T1 or T2 is pre-agreed with the first communication node, or configured by signaling of the first communication node, or determined according to the configuration of the CP (wherein, T1 and T2 may be the same); the CP length used when sending signals on resources within the same first-type resource group is less than or equal to t1, and the CP length used when sending signals on resources in different first-type resource groups is greater than t2, wherein t1 or t2 is pre-agreed with the first communication node, or configured by signaling of the first communication node (wherein, t1 and t2 may be the same);Resources in different first-class resource groups correspond to different CP lengths; resources in the same first-class resource group correspond to the same CP length; transmit signals corresponding to resources in the same first-class resource group are not allowed to be spatially multiplexed; transmit signals corresponding to resources in different first-class resource groups are allowed to be spatially multiplexed; the number of first-class resource groups is equal to the maximum number of layers that can be transmitted using spatial division multiplexing; transmit signals corresponding to resources in the first-class resource groups are quasi-co-located; resources in the first-class resource groups have the same channel characteristics; the channel characteristics of a resource in the first-class resource group can be obtained from the channel characteristics of other resources in the group.

[0169] In an optional embodiment, it includes at least one of the following features: the above-mentioned configuration information includes at least one of the following: grouping restriction indication information, used to determine the threshold parameters of the grouping, used to determine the parameters of the grouping rules, wherein the configuration information can be configured by the first communication node signaling, or pre-agreed with the first communication node; the sending signals corresponding to the resources within the same first-class resource group are allowed to be spatially multiplexed; the sending signals corresponding to the resources within different first-class resource groups are not allowed to be spatially multiplexed; the number of layers of spatially multiplexed sending signals corresponding to the resources within the same first-class resource group is less than or equal to the number of resources contained in the group.

[0170] In an optional embodiment, the above-mentioned group restriction indication information includes: the number of resources contained in the same first-class resource group does not exceed a, and the number N of first-class resource groups does not exceed b, where a and b are both natural numbers greater than or equal to 1; or, the number of resources contained in the same first-class resource group is fixed to a, and the number N of first-class resource groups is fixed to b, where a and b are both natural numbers greater than or equal to 1.

[0171] In an optional embodiment, the above method includes agreeing with the first communication node that the first type resource group includes at least one of the following characteristics: the same first type resource group corresponds to the same set of timing advance TA parameters; the same first type resource group corresponds to the same set of cyclic prefix CP parameters; the corresponding cyclic prefix CP length when different resources are sent simultaneously is determined according to the maximum absolute value of the resource group index difference of the first type resource group corresponding to the resource; different first type resource groups correspond to different cyclic prefix CP parameters; the receiving resources corresponding to the same first type resource group are the same; different receiving resources corresponding to different first type resource groups are generated by time division (generated by the second communication node by time division) Different receiving resources corresponding to different first-class resource groups are generated, wherein the above-mentioned second communication node can be an operating entity that determines M resources and feeds back the indication information of the M resources and the indication information of dividing the M resources into N first-class groups to the first communication node); at least one type of channel or signal state parameter corresponding to the same first-class resource group is the same; the resources within the same first-class resource group are allowed to be frequency-division multiplexing and / or space-division multiplexing and / or time-division multiplexing (wherein, the same first-class resource group preferably adopts time-division multiplexing); the resources of different first-class resource groups cannot be frequency-division or space-division multiplexed, but can only be time-division multiplexed; the resources within the same first-class resource group correspond to the same index indication parameter.

[0172] The multiplexing restrictions described in the embodiments of the present invention refer to the restrictions on the multiplexing method used when a first communication node sends data to a second communication node during the transmission phase after feedback. If the first communication node uses different resources to send information to the second communication node and one or more third communication nodes, the aforementioned multiplexing restrictions do not apply. Specifically, for example, the aforementioned restriction only allows for time-division multiplexing of two resources. If one resource is sent to the second communication node and one resource is sent to the third communication node, the two resources can be space-division or frequency-division multiplexed.

[0173] In an optional embodiment, the above-mentioned channel or signal state parameters are the same, including at least one of the following: the same rank indication (RI), the same reference signal received power RSRP, the same channel quality indication (CQI), the same received signal-to-noise ratio (SNR), the same precoding matrix indication (PMI), and the same channel reference signal (CRI); and / or, the same index corresponding to the resources in the same first-category resource group includes at least one of the following: receiving beam index, receiving sector index, receiving antenna index, receiving sequence index, receiving port index, and receiving beam combination index.

[0174] In an optional embodiment, the method further includes: agreeing with the first communication node on the following feature: the ability to simultaneously generate reception modes corresponding to all first-category resource groups. In this embodiment, the second communication node and the first communication node may agree on the following feature: the second communication node has the ability to simultaneously generate reception modes corresponding to all first-category resource groups. The second communication node may be an operator that determines M resources and feeds back indication information of the M resources and indication information of dividing the M resources into N first-category groups to the first communication node.

[0175] In an optional embodiment, the above method includes: agreeing with the first communication node that the first type of resource group includes one of the following characteristics: resources within the same first type of resource group are not allowed to be spatially multiplexed, resources within different first type of resource groups are allowed to be spatially multiplexed, and the maximum number of layers of spatial multiplexing is less than or equal to the number of groups of first type of resource groups; resources within the same first type of resource group are allowed to be spatially multiplexed, resources within different first type of resource groups are not allowed to be spatially multiplexed, and the number of layers of spatial multiplexing of resources within the same first type of resource group is less than or equal to the number of resources contained in the first type of resource group.

[0176] In an optional embodiment, the above method includes at least one of the following: in the first type of grouping indication information, the resources in each group are arranged in sequence according to the reception quality of the resources; the first type of grouping indication information includes at least one of the following information: group number information, resource information included in each group, resource number information included in each group, grouping mode indication information, grouping index information, and common parameter information corresponding to each group; the above first type of grouping indication information includes multi-level grouping; the first type of grouping indication information includes two-level grouping, and a first-level group includes multiple second-level groups, wherein the second communication node used to divide the M resources into N first-level resource groups has the ability to simultaneously generate receiving resources corresponding to different first-level groups or all first-level groups and time-division generate different receiving resources corresponding to multiple second-level groups included in the same first-level group, or time-division generate receiving resources corresponding to resources in different first-level groups and simultaneously generate different second-level groups or all second-level groups included in the same first-level group.

[0177] In an optional embodiment, the above method includes at least one of the following: there is a mapping relationship between the number of group information and the sending indication information and the resource information used for the first type of group indication information; each of the above first type groups includes resource information, and the resource information includes at least one of the following information: index information of the resource in the candidate resource set, and channel quality indication CQI information corresponding to each resource; the common parameters corresponding to each of the above first type groups include at least one of the following parameters: cyclic prefix CP length information corresponding to each group, precoding matrix indication PMI information corresponding to each group, rank indication RI information corresponding to each group, channel instruction indication CQI information corresponding to each group, timing advance TA parameter information corresponding to each group, quasi-co-location parameter information corresponding to each group, and receiving resource information corresponding to each group; the resource index set contained in the jth group in the above first type group indication information is {b i,j -1,i=0,1,...,Lj-1}, where 1≤b i,j ≤TBN,b i,j <b i+1,j , the resource index collection is used bits represent, The value of the bit is in TBN is the total number of resources included in the candidate resource set, 0≤j≤N-1, N is the number of groups of the first type of resources, Lj is the number of resources included in the jth group, It represents the number of different combinations of selecting B numbers from A numbers.

[0178] In an optional embodiment, the above-mentioned N value satisfies one of the following characteristics: the above-mentioned N value is a first agreed value; the above-mentioned N value is less than or equal to N_max, wherein the N_max is a second agreed value (which can be a value agreed upon by the first communication node and the second communication node).

[0179] In an optional embodiment, the method further includes: feeding back to the first communication node the maximum number of different receiving resources corresponding to different first-category resource groups that can be generated simultaneously. In this embodiment, the different receiving resources may be generated by a second communication node, wherein the second communication node may be the operating entity that determines the M resources and feeds back to the first communication node the indication information of the M resources and the indication information of dividing the M resources into N first-category groups.

[0180] In an optional embodiment, the uses of the resources in the above-mentioned candidate resource set include at least one of the following: receiving and / or sending synchronization signals; receiving and / or sending data signals; receiving and / or sending control signals; receiving and / or sending pilot signals.

[0181] In an optional embodiment, the number of resources included in different first-type groups is the same or different.

[0182] In the embodiment, a method for acquiring group indication information is also provided, Figure 3 is a flowchart of the method for acquiring group indication information according to an embodiment of the present application, as shown in Figure 3 The flowchart includes the following steps:

[0183] In step S302, the second-type group indication information is acquired, wherein the second-type group indication information includes at least one of the following information: group index set information, group mode indication information, and resource information included in a group, wherein the group index set includes at least one group index.

[0184] The second communication node can perform the above operations.

[0185] Through the above steps, the second communication node can acquire the second-type group indication information (which can be the second-type group indication information sent by the first communication node).

[0186] In an optional embodiment, the method further includes determining the transmission parameter and / or the reception parameter of a corresponding signal according to the second-type group indication information.

[0187] In an optional embodiment, the corresponding signal includes at least one of the following signals: a control channel signal, a data channel signal, and a reference signal.

[0188] In an optional embodiment, acquiring the second-type group indication information includes at least one of the following: acquiring the second-type group indication information according to a rule agreed with the first communication node; receiving semi-static signaling and acquiring the second-type group indication information from the semi-static signaling; receiving dynamic signaling and acquiring the second-type group indication information from the dynamic signaling; and receiving system information and acquiring the second-type group indication information from the system information. It should be noted that the above several acquisition methods are several preferred methods, and other methods can also be used for acquisition.

[0189] In an optional embodiment, determining the transmission parameter and / or the reception parameter of a corresponding signal according to the second-type group indication information includes: determining a correspondence relationship agreed with the first communication node in advance, wherein the correspondence relationship is a correspondence relationship between the second-type group indication information and the transmission parameter and / or the reception parameter; and determining the transmission parameter and / or the reception parameter by referring to the correspondence relationship according to the second-type group indication information.

[0190] In an optional embodiment, the correspondence between the second-type grouping indication information and the transmission parameters and / or reception parameters is included in the first-type grouping indication information fed back to the first communication node. The first-type indication information is fed back to the first communication node by the second communication node, and the second communication node may be the subject of the operation of obtaining the second-type indication channel.

[0191] In an optional embodiment, the transmission parameters include at least one of the following: the modulation and coding scheme (MCS) set corresponding to the signal, the multiplexing mode used by the signal, the cyclic prefix (CP) length corresponding to the signal, the number of spatial division multiplexing layers used by the signal, the demodulation reference signal port information used by the signal, the quasi-co-reference signal resource information corresponding to the signal, and the structure information corresponding to the signal; wherein the structure information includes the CP length information of the starting symbol of the time unit and / or whether the starting position of the time unit includes the synchronization signal and / or the CP length of the last symbol of the time unit; the channel characteristic reference signal corresponding to the signal, the transmission mode corresponding to the signal; and / or the reception parameters include the reception resources used to receive the signal. Optionally, the reception resources include at least one of the following: reception port, reception antenna, reception beam, reception precoding weight, reception time, reception frequency domain, reception sector, and reception sequence resource.

[0192] In an optional embodiment, the grouping method indicated by the second type of grouping indication information includes at least one of the following methods: grouping according to the receiving resources corresponding to the resources in the candidate resource set, grouping according to the channel quality corresponding to the resources in the candidate resource set, grouping resources according to a predetermined multiplexing method, grouping according to the timing advance TA parameter, grouping according to the cyclic prefix CP length, grouping according to the space division multiplexing method, and grouping according to a quasi-co-location relationship. Grouping according to the sent measurement reference signal, and grouping according to channel characteristics. In this embodiment, before receiving the second type of grouping indication, the terminal may send an uplink measurement reference signal to the base station, and the grouping may be notified through the uplink measurement reference signal.

[0193] In an optional embodiment, the above-mentioned receiving resources include at least one of the following resources: receiving beam, receiving antenna, receiving port, receiving precoding matrix, receiving time, receiving frequency domain, receiving sector, and receiving sequence.

[0194] In an optional embodiment, the resource information included in the above-mentioned group includes resource information of a reference signal, wherein the above-mentioned reference signal includes at least one of the following types: a demodulation reference signal, and a measurement reference signal resource.

[0195] In an optional embodiment, the channel characteristics and / or quasi-co-location information of resources in the same group are the same.

[0196] In an optional embodiment, there is a correspondence between the grouping index and the port information of the measurement reference signal sent by the second communication node, wherein the second communication node is the communication node that obtains the second grouping indication information.

[0197] This embodiment also provides a signal receiving method. Figure 4 is a flow chart of a signal receiving method according to an embodiment of the present invention. Figure 4 As shown, the process includes the following steps:

[0198] Step S402, obtaining third-category grouping indication information;

[0199] Step S404: Receive a demodulation reference signal and / or a control channel according to the third type of grouping indication information.

[0200] The above operation may be performed by the second communication node, and the above third-category grouping indication information may come from the first communication node.

[0201] In an optional embodiment, the third type of group indication information includes at least one of the following: group number information, resource information included in each group, resource number information included in each group, grouping mode indication information, and grouping index information.

[0202] In an optional embodiment, obtaining the third-category group indication information includes at least one of the following methods: obtaining feedback information based on a signal sent by the first communication node, the feedback information including the third-category group indication information, wherein the second communication node may receive the signal sent by the first communication node to obtain the feedback information and feed the feedback information back to the first communication node; obtaining the third-category group indication information based on a rule agreed upon with the first communication node; receiving signaling information, the signaling information including the third-category group indication information. The received signaling information may include receiving the third-category group indication information sent through semi-static signaling, receiving the third-category group indication information sent through dynamic signaling, or receiving the third-category group indication information sent through a system message.

[0203] In an optional embodiment, receiving the above-mentioned demodulation reference signal and / or control channel according to the third-category grouping indication information includes: receiving the demodulation reference signal and / or control channel on N1 time-divided resources according to the third-category grouping indication information, where N1=x×N, or N1 is less than or equal to N, N1 is an integer greater than 0, N is the third-category group number information contained in the above-mentioned third-category grouping indication information, and x is an integer greater than or equal to 1.

[0204] In an optional embodiment, the demodulation reference signal and / or the control channel are received using a receiving resource in the receiving resource set on N1 resources for sending the demodulation reference signal;

[0205] In an optional embodiment, one or more receiving resources are selected from the above-mentioned receiving resource set according to certain rules, and the data after the above-mentioned demodulation reference signal, and / or control signal, and / or reference signal are received according to the selected receiving resources.

[0206] In an optional embodiment, the above method also includes: obtaining the above-mentioned receiving resource set by at least one of the following methods: the above-mentioned receiving resource set is composed of receiving resources corresponding to all groups indicated by the third type of group indication information; the above-mentioned receiving resource set is composed of receiving resources corresponding to N2 group indexes agreed with the first communication node, where N2 is an integer greater than or equal to 1; determining the receiving resource set by obtaining signaling indication information.

[0207] In an optional embodiment, the above-mentioned receiving resources include at least one of the following resources: receiving beam, receiving antenna, receiving port, receiving precoding matrix, receiving time, receiving frequency domain, receiving sector, and receiving sequence.

[0208] In an optional embodiment, before receiving the demodulation reference signal and / or control channel on the N1 time-division resources according to the third type of grouping indication information, the method further includes: acquiring an x ​​parameter and / or an N1 parameter.

[0209] In an optional embodiment, obtaining x and / or N1 includes at least one of the following methods: obtaining according to a method agreed with the first communication node; obtaining through semi-static signaling configuration; obtaining through dynamic signaling configuration.

[0210] In an optional embodiment, receiving a demodulation reference signal and / or a control channel according to the above-mentioned third type of group indication information includes: receiving a demodulation reference signal and / or a control channel according to the above-mentioned third type of indication information at an agreed time unit, and receiving a demodulation reference signal and / or a control channel only on one time-division resource at an unagreed time unit.

[0211] This embodiment also provides a method for receiving feedback information. Figure 5 is a flow chart of a method for receiving feedback information according to an embodiment of the present invention. Figure 5 As shown, the process includes the following steps:

[0212] Step S502: receiving feedback information from the second communication node, wherein the feedback information includes indication information for instructing the second communication node to select M resources and first-category grouping indication information for instructing the second communication node to group the M resources into N first-category resource groups;

[0213] Step S504: perform resource scheduling according to the feedback information, and / or perform signal transmission according to the feedback information; wherein, N and M are both integers, N is less than or equal to M, and M resources are selected from a set of candidate resources.

[0214] The above operations may be performed by the first communication node (eg, a base station).

[0215] Through the above steps, the second communication node groups the transmission resources and then feeds them back to the first communication node. Resources within the same group have certain common characteristics, while resources within different groups have different characteristics. Limited feedback information is used to provide the first communication node with more information, thereby improving the scheduling flexibility of the first communication node and enabling the first communication node to reasonably and effectively manage the resources. Therefore, the problem of the inability to reasonably and flexibly manage and schedule transmission beams and / or reception beams, which exists in related technologies, can be solved, achieving the effect of flexible management and scheduling of transmission beams and / or reception beams.

[0216] In an optional embodiment, before receiving feedback information from the second communication node, the above method also includes at least one of the following: sending a signal corresponding to all or part of the resources in the resource set to the second communication node; sending at least one of the following information for determining the first type of resource grouping indication information to the second communication node: grouping restriction indication information, parameters for determining grouping rules, threshold parameters for determining grouping, configuration indication information of the above candidate resource set, and grouping method indication information.

[0217] The number of resources contained in the same first-class resource group does not exceed a, and the number N of first-class resource groups does not exceed b; or the number of resources contained in the same first-class resource group is fixed to a, and the number N of first-class resource groups is fixed to b, where a and b are both natural numbers greater than or equal to 1.

[0218] In an optional embodiment, the grouping method indicated by the above-mentioned first type of grouping indication information includes at least one of the following: grouping according to the receiving resources corresponding to the resources; grouping according to the channel quality corresponding to the resources; grouping according to a predetermined multiplexing method; grouping according to the timing advance TA parameter; grouping according to the cyclic prefix CP length; grouping according to the space division multiplexing method; grouping according to the quasi-co-location relationship.

[0219] In an optional embodiment, grouping according to a predetermined multiplexing mode includes grouping according to a space division multiplexing mode.

[0220] In an optional embodiment, the above-mentioned receiving resources include at least one of the following resources: receiving beam, receiving antenna, receiving port, receiving precoding matrix, receiving time, receiving frequency domain, receiving sector, and receiving sequence.

[0221] In an optional embodiment, the above-mentioned first-class resource group includes at least one of the following: the timing advance TA values ​​corresponding to the same first-class resource group are the same; different first-class resource groups correspond to different timing advance TA values; resources of the same first-class resource group are allowed to be scheduled within the same time unit; some or all resources in the same first-class resource group are allowed to be scheduled within the same time unit; different first-class resource groups are scheduled in different time units and cannot be scheduled in the same time unit; the multiplexing method of resources in the same first-class resource group is set A, and the multiplexing method of resources in different first-class resource groups is set B, wherein set B is a true subset of set A, or set A is a true subset of set B; resources in the same first-class resource group cannot be spatially multiplexed in the same time unit, and resources in different first-class resource groups are allowed to be spatially multiplexed in the same time unit. Space division multiplexing, wherein the number of layers of space division multiplexing is less than or equal to the number of first-category resource groups; when resources in the same first-category resource group are scheduled simultaneously in the same time unit, or when resources in the same first-category resource group are switched in different time units, a first cyclic prefix CP length is used; when resources in different first-category resource groups are scheduled in the same time unit, a second CP length is used; when the scheduled resources are switched between different first-category resource groups or first-category resource combinations, the starting orthogonal frequency division multiplexing OFDM symbol of the switching adopts a third CP length, and / or the starting position of the switching has a synchronization signal for the receiving timing of the second communication node, and / or the last OFDM symbol before the switching adopts the third CP length; the quasi-co-location of the same first-category resource group is the same, and all resources in the same first-category resource group share a quasi-co-location reference signal.

[0222] In an optional embodiment, resources in the same first-class resource group are allowed to be spatially multiplexed in the same time unit, wherein the number of layers of spatial multiplexing is less than or equal to the number of resources included in the first-class resource group, and resources in different first-class resource groups cannot be spatially multiplexed in the same time unit; and / or, the corresponding CP length of resources in different first-class resource groups scheduled in the same time unit is obtained according to the difference in the index of the resource group where the resources are located.

[0223] In an optional embodiment, the third CP length is greater than the first CP length and the second CP length.

[0224] In this embodiment, a method for notifying group indication information is also provided. Figure 6 is a flow chart of a method for notifying group indication information according to an embodiment of the present invention. Figure 6 As shown, the process includes the following steps:

[0225] Step S602, determining the second type of grouping indication information;

[0226] Step S604: inform the second communication node of the above-mentioned second-category group indication information, wherein the second-category group indication information includes at least one of the following information: group index set information, group mode indication information, and resource information included in the group, wherein the second-category group index set includes at least one group index.

[0227] The first communication node may perform the above operations.

[0228] In an optional embodiment, informing the second communication node of the second category group indication information includes at least one of the following methods: agreeing with the second communication node on the above-mentioned second category group indication information; sending the second category group indication information to the second communication node through semi-static signaling; sending the second category group indication information to the second communication node through dynamic signaling; sending the second category group indication information to the second communication node through a system message.

[0229] In an optional embodiment, the second type of grouping indication information is used by the second communication node to determine the sending parameters and / or receiving parameters of the signal corresponding to the second type of grouping indication information.

[0230] In an optional embodiment, the transmission parameters include at least one of the following: the MCS set corresponding to the signal, the multiplexing mode used by the signal, the cyclic prefix (CP) length corresponding to the signal, the number of spatial division multiplexing layers used by the signal, the demodulation reference signal port information used by the signal, the quasi-co-reference signal resource information corresponding to the signal, the structure information corresponding to the signal, the channel characteristic reference signal resource corresponding to the signal, and the transmission mode of the signal; wherein the structure information includes the CP length information of the starting symbol of the time unit and / or whether the starting position of the time unit includes the synchronization signal information and / or the CP length of the last symbol of the time unit; and / or the reception parameters include the reception resources used to receive the signal. Optionally, the reception resources include at least one of the following: reception port, reception antenna, reception beam, reception precoding weight, reception time, reception frequency domain, reception sector, and reception sequence resource.

[0231] In an optional embodiment, the above-mentioned signal includes at least one of the following signals: a data channel signal, a control channel signal, and a reference signal.

[0232] In an optional embodiment, before sending the second type of grouping indication information to the second communication node, the above method further includes: determining a correspondence between the second type of grouping indication information and a parameter, wherein the parameter includes the sending parameter and / or receiving parameter.

[0233] In an optional embodiment, determining the correspondence between the second-category group indication information and the sending parameters and / or receiving parameters includes at least one of the following: determining the correspondence between the second-category group indication information and the parameters by agreement with the second communication node; determining the correspondence between the second-category group indication information and the parameters by receiving the first-category group indication information fed back by the second communication node; and sending the correspondence to the second communication node.

[0234] In an optional embodiment, determining the correspondence between the second type of grouping indication information and the above-mentioned parameters by agreement with the above-mentioned second communication node includes: obtaining the correspondence between the second type of grouping indication information and the above-mentioned parameters based on the measurement reference signal sent by the above-mentioned second communication node.

[0235] In an optional embodiment, the above-mentioned first-category group indication information includes at least one of the following: group number information, resource information included in each group, resource number information included in each group, grouping mode indication information, grouping index information, and common parameter information corresponding to each group.

[0236] In an optional embodiment, the common parameters corresponding to each of the above-mentioned groups include at least one of the following parameters: cyclic prefix CP length information corresponding to each group, precoding matrix indication PMI information corresponding to each group, rank indication RI information corresponding to each group, channel instruction indication CQI information corresponding to each group, timing advance TA parameter information corresponding to each group, quasi-co-location parameter information corresponding to each group, and receiving resource information corresponding to each group.

[0237] In an optional embodiment, the grouping method indicated by the second type of grouping indication information includes at least one of the following methods: grouping based on receiving resources corresponding to the transmitting resources, grouping based on channel quality corresponding to the transmitting resources, resource grouping based on a predetermined multiplexing method, grouping based on a timing advance (TA) parameter, grouping based on a cyclic prefix (CP) length, grouping based on a spatial division multiplexing method, grouping based on a quasi-co-location relationship, grouping based on a measurement reference signal sent by the second communication node, or grouping based on channel characteristics; wherein the transmitting resources include one or more of the following resource types: transmitting beam resources, transmitting antenna resources, transmitting port resources, transmitting frequency domain resources, transmitting sequence resources, and transmitting time domain resources.

[0238] In an optional embodiment, the above-mentioned receiving resources include at least one of the following resources: receiving beam, receiving antenna, receiving port, receiving precoding matrix, receiving time, receiving frequency domain, receiving sector, and receiving sequence.

[0239] In an optional embodiment, the resource information included in the above-mentioned group includes resource information of a reference signal, wherein the above-mentioned reference signal includes at least one of the following types: a demodulation reference signal, and a measurement reference signal resource.

[0240] In an optional embodiment, the channel characteristics and / or quasi-co-location information of resources in the same group are the same.

[0241] In an optional embodiment, there is a correspondence between the group index and the port information of the sounding reference signal sent by the second communication node.

[0242] This embodiment also provides a signal sending method. Figure 7 is a flow chart of a signal sending method according to an embodiment of the present invention. Figure 7 As shown, the process includes the following steps:

[0243] Step S702, determining the third type of grouping indication information;

[0244] Step S704: Send a demodulation reference signal and / or a control channel according to the third type of grouping indication information.

[0245] The above operations may be performed by the first communication node. The above demodulation reference signal and / or control channel may be sent to the second communication node.

[0246] Through the above steps, the first communication node can inform the second communication node of the grouping indication information, so that the second communication node receives the demodulation reference signal and / or control channel according to the third type of grouping indication information.

[0247] In an optional embodiment, the third type of group indication information includes at least one of the following: group number information, resource information included in each group, resource number information included in each group, grouping mode indication information, and grouping index information.

[0248] In an optional embodiment, determining the third category grouping indication information includes at least one of the following: determining the third category grouping indication information based on the first category grouping indication information received from the second communication node; determining the third category grouping indication information based on rules agreed upon with the second communication node.

[0249] In an optional embodiment, sending a demodulation reference signal and / or a control channel according to the third type of grouping indication information includes: sending the demodulation reference signal and / or the control channel on N1 resources in time division according to the third type of grouping indication information, where N1 = x × N, or N1 is less than or equal to N, N1 is an integer greater than 0, N is the number of groups contained in the third type of grouping indication information, and x is an integer greater than or equal to 1.

[0250] In an optional embodiment, before sending the demodulation reference signal and / or the control channel according to the third type of grouping indication information, the above method further includes: configuring x and / or N1 to the second communication node.

[0251] In an optional embodiment, informing the second communication node of x and / or N1 includes at least one of the following methods: informing the second communication node of x and / or N1 in a manner agreed upon with the second communication node; sending x and / or N1 to the second communication node through semi-static signaling; sending x and / or N1 to the second communication node through dynamic signaling.

[0252] In an optional embodiment, the demodulation reference signals on the above-mentioned N1 resources are sent in the same manner, wherein the demodulation reference signal is sent in at least one of the following manners: sending beam, sending port, sending antenna, sending precoding matrix, and sending frequency domain resources.

[0253] In an optional embodiment, the demodulation reference signal and / or control channel on the above-mentioned N1 resources is sent in the same manner as the data and / or control signal and / or reference signal sent after the demodulation reference signal and / or control channel, wherein the sending manner of the demodulation reference signal includes at least one of the following methods: sending beam, sending port, sending antenna, sending precoding matrix, and sending frequency domain resources.

[0254] In an optional embodiment, sending a demodulation reference signal and / or a control channel according to the above-mentioned third-category grouping indication information includes: sending the demodulation reference signal and / or the control channel according to the third-category grouping indication information at an agreed time unit, and sending the demodulation reference signal and / or the control channel only on one time-division resource at an unagreed time unit.

[0255] It should be noted that the features in the above embodiments can be referenced to each other.

[0256] The present invention is illustrated below with reference to specific embodiments:

[0257] Figure 8 is a hybrid beamforming communication model diagram according to an embodiment of the present invention, such as Figure 8As shown, the transmitter has Y RF links, each of which is connected to O transmitting elements. In the nth RF link, the RF beamforming is performed on the signal from the digital baseband, which is multiplied by W. n =[w n1 w n2 … w nO ] T Then, it is transmitted through the O antenna elements connected to the nth radio frequency link. In this embodiment, it is assumed that the signal from the digital baseband signal to each radio frequency link at the transmitting end is a time domain signal, that is, Figure 8 The sequences S1, S2, ..., SY in the figure are all time domain signals. At this time, each RF beamforming effect on the time domain signal is equivalent to applying this RF beamforming to the full-bandwidth signal, that is, an RF link can only generate one RF beam on one OFDM symbol.

[0258] Figure 8 The Y radio frequency links correspond to different antenna elements, that is, the elements are multiplexed in a grouped manner. In another embodiment, multiple radio frequency links can also share the antenna element.

[0259] Similarly, at the receiving end, there are P RF chains, each corresponding to X antenna elements. The signal is first received by the antenna element, and then the signals of each antenna element are multiplied by a weighted value and summed at the RF chain to form the baseband signal corresponding to this RF chain, which is input into the baseband processing unit for processing.

[0260] Figure 8 The number of antenna elements corresponding to each RF link at the transmitting end is the same. In the embodiment of the present invention, the situation that the number of antenna elements corresponding to each RF link is different is not excluded. Similarly, in the embodiment of the present invention, the situation that the number of antenna elements corresponding to each RF link at the receiving end is different is not excluded.

[0261] In the embodiment of the present invention, one antenna may correspond to only one radio frequency chain, or one antenna may correspond to multiple radio frequency chains. Specific embodiment 1

[0263] In this embodiment, the receiving end may determine the resource selection information through the following steps and feed the resource selection information back to the sending end.

[0264] Step 1: The receiving end determines configuration information of a candidate resource set; the resource set includes Q second-category resource groups; Q is an integer greater than or equal to 1;

[0265] Step 2: The receiving end receives the transmission signals on the Q second-type resource groups;

[0266] Step 3: The receiving end selects M resources from the above resource set; M is an integer greater than or equal to 1; when M>1, the receiving end divides the M resources into N first-category resource groups, N<=M;

[0267] Step 4: The receiving end feeds back the indication information of the selected M resources and the grouping indication information of the first type of resource group to the sending end.

[0268] In the above step 1, the second type resource group can be divided according to one or more of the following resource types: beam resources, antenna resources, port resources, frequency domain resources, transmission sequence resources, and time domain resources. The above second type resource group includes one or more resources.

[0269] Optionally, for the division of the second type of resource groups, the first implementation method is to divide different beams into different groups. Figure 9 The transmitter has a total of nine transmit beams, resulting in Q = 9. The different beams can be different RF beams or hybrid beams. Hybrid beams are formed by combining RF beams and baseband beams. Specifically, when the transmitter has multiple antennas, each antenna corresponds to an RF beam, which is then formed through baseband precoding.

[0270] Optionally, for the division of the second type of resource groups, a second implementation method is to divide different antennas into different groups, such as Figure 10 As shown, the transmitting end has 2 transmitting antennas, each transmitting antenna corresponds to 9 RF beams, at this time Q=2, each group of second-type resource groups has 9 resources, in this embodiment, different antennas correspond to the same number of RF beams, of course, this embodiment does not exclude the case where different antennas correspond to different numbers of RF beams. Strictly speaking, if Figure 8 When one antenna corresponds to multiple RF chains, the different beams corresponding to one antenna should also be mixed beams.

[0271] Optionally, for the division of the second type resource groups, a third implementation method is that different ports are different second type resource groups. For example, if there are Q ports, there are Q second type resource groups.

[0272] Optionally, for the division of the second type resource group, a fourth implementation method is to divide different time domain resources into different second type resource groups. For example, if there are Q time domain resources in the time domain, then there are Q second type resource groups, and one time domain resource can contain one or more resources. For example, one time domain resource includes multiple reference signal ports, such as Figure 13 As shown, there are Q=3 second-type resource groups in total, each resource group corresponds to a time-frequency resource, and each second-type resource group can further include multiple resources, for example, including multiple resources in a code division / frequency division manner. Figure 13 The time-frequency resources occupied by different time-frequency resource groups are only examples and do not exclude other occupation situations. Figure 13 There are only three second-type resource groups, which is just an example and does not exclude other numbers of groups.

[0273] Specifically, for the division of the second type of resource groups, the fifth implementation method is to divide different frequency domain resources into different second type of resource groups, such as Figure 11 As shown, different subbands correspond to different second-type resource groups. Figure 11 There are 3 subbands in , and Q=3 at this time. The subband is a continuous section of frequency domain resources, which is similar to the existing LTE subband definition, or similar to the existing LTE measurement subband definition. Figure 11 Each sub-band resource group includes 9 transmission beam resources. In this embodiment, the number of beams corresponding to different sub-bands is the same. Of course, in another embodiment of this embodiment, it is not ruled out that the number of beams included in each sub-band resource is different. In this example, the different beam resources corresponding to each sub-band can be sent in a time division manner, such as Figure 11 As shown, each sub-band requires 9 time-division resources. For example, the transmitter has 1 transmit antenna and can only send one beam per time unit. The one beam can correspond to each sub-band, that is, one RF link beam in the time domain can act on the 3 sub-bands. Then, the 9 transmit beam measurement signals in the 3 sub-bands can be sent completely through 9 time-division resources. The 9 transmit beams can also be sent through time division and code division / frequency division. In this case, The nine beam measurement resources are transmitted using L time-division resources, where L represents the number of resources that can be transmitted simultaneously in a time-division resource, for example, L is the number of transmit antennas. In this case, the L beam resources are transmitted within a subband of a time-division resource using a combination of any two or three of time division, code division, and frequency division. In short, L RF links can only transmit L RF beams, and each RF beam can operate over the full bandwidth.

[0274] Specifically, for the division of the second type of resource groups, the sixth implementation method is that different transmission sequences correspond to different second type resource groups. For example, there are now 5 transmission sequences, and Q=5. The same transmission sequence can be sent on different time-frequency resources. When the same transmission sequence is sent on different time-frequency resources, it can be regarded as containing one resource in the second type of resource group, or it can correspond to containing multiple resources. Figure 12As shown, the same transmission sequence 1 is sent on three time-division resources. In this case, one approach is to assume that the first resource group corresponding to the transmission sequence 1 includes one resource, and the receiving end comprehensively calculates the performance of the one resource based on the reception performance of the transmission sequence 1 sent on the three time-division resources. In this case, another approach is to assume that the first resource group corresponding to the transmission sequence 1 includes three resources, and the receiving end can select from the three resources. Figure 12 The three time-division resources corresponding to the same transmission sequence are continuous in the time domain. This embodiment does not exclude the possibility that the three time-division resources are non-continuous in the time domain.

[0275] Specifically, for the division of the second type of resource groups, the seventh implementation method is that different QCL information corresponds to different second type resource groups, where the resources belonging to the same second type resource group are quasi-co-located, and the quasi-co-location information of the above two resources is the same, similar to the quasi co-located in the existing LTE, that is, the large-scale information related to the channel or signal of one resource can be inferred from the large-scale information related to the other channel or signal.

[0276] The above-mentioned QCL information or quasi-co-location information can also be channel characteristic information, or other equivalent terms, wherein the channel characteristic information includes at least one of the following information of the reference signal: Doppler spread, Doppler frequency shift, average gain, average delay, average angle spread, AOA (horizontal angle of arrival), ZOA (vertical angle of arrival), AOD (horizontal angle of departure), ZOD (vertical angle of departure). The above-mentioned six ways of dividing the second-class resource groups are only examples and do not exclude other ways of dividing the second-class resource groups. In short, there are Q second-class resource groups, and each second-class resource group includes one or more resources. Furthermore, the Q second-class resource groups correspond to Q reference signal resources (such as similar CSI-RS resources, but can be other names), and each reference signal resource includes one or more ports (similar to CSI-RS ports), corresponding to one or more resources in the second-class resource group.

[0277] In step 3, the receiving end selects M resources from the Q second-type resource groups. Furthermore, the selected M resources are from all resources in the Q second-type resource groups. For example, each second-type resource group includes M1 resources, and the selected M resources are from Q×M1 resources. The receiving end may select M resources from the Q second-type resource sets based on certain rules, such as selecting M resources from a resource set based on the channel quality and / or signal quality corresponding to the resources. The signal is the received signal on the resource, and the channel is obtained by dividing the received signal on the resource by the reference signal sent on the resource.

[0278] In step 3, when M > 1, the M resources are divided into N first-category resource groups. The resources in the first-category resource groups satisfy one or more of the following characteristics: Resources in the same first-category resource group belong to one or more second-category resource groups. For example, resources in the same first-category resource group come from more than one second-category resource group among Q second-category resource groups. Resources in the same second-category resource group belong to one or more first-category resource groups. For example, resources in a second-category resource group exist in more than one first-category resource group.

[0279] In the above embodiment, the use of the above resources includes one or more of the following uses: receiving / transmitting synchronization signals, receiving / transmitting data signals, receiving / transmitting control signals, and receiving / transmitting pilot signals, wherein the above-mentioned receiving / transmitting refers to the use of resources for transmitting and / or receiving the above-mentioned signals. For example, if the use of the resources is to receive / transmit pilot signals, then the resources may be beam training signal resources, which may be used to train the transmitting end to transmit a transmitting beam corresponding to the communication link received by the receiving end, or may be used to train the transmitting end to transmit a receiving beam corresponding to the communication link received by the receiving end. Of course, the beam training signal may also be a transmission mode and / or reception mode signal. The transmission mode is one or more of the transmission beam, transmission port, transmission precoding matrix, transmission time domain resources, transmission frequency domain resources, and transmission sequence resources used by the communication node to transmit the signal. The reception mode is one or more of the reception beam, reception port, reception precoding matrix, reception time domain resources, reception frequency domain resources, reception sequence resources, and reception sector resources used by the communication node to transmit the signal.

[0280] In the above embodiment, preferably, the above receiving end determines the candidate resource set information according to the configuration information obtained previously, or determines the candidate resource set according to the rules agreed between the receiving end and the transmitting end and the previous beam training results.

[0281] Preferably, the receiving end groups the selected M resources according to configuration information, wherein the configuration information includes grouping restriction indication information. Optionally, the restriction indication information may include at least one of the following: the maximum number of resources contained in each first-category group, the number of feedback bits for each first-category group, whether the number of resources contained in each first-category group is the same, the total number of feedback bits for all first-category groups, the maximum number of feedback bits for all first-category groups, and the maximum number of first-category groups. The configuration information may also include parameter information for determining a threshold and / or parameters for determining a grouping rule. For example, when there are multiple grouping rules, the configuration information indicates which rule is currently being used for grouping. The configuration information may be obtained via signaling information from the sending end and / or rules agreed upon with the sending end.

[0282] In the above embodiment, step 2 and step 3 are separate steps. This embodiment does not exclude another implementation method in which step 2 and step 3 do not have an obvious order, but are the comprehensive selection results of the receiving end, that is, the receiving end obtains N first-class resource groups from a set of Q second-class resource groups, and the N first-class resource groups include M resources, where M is greater than or equal to 1 and N is less than or equal to M. Specific embodiment 2

[0284] The implementation steps of this embodiment are similar to those of Specific Embodiment 1. This embodiment specifically describes the grouping principle for the first type of resource group in step 3. This embodiment groups the M selected resources based on their receiving resources. The receiving resources are receiving antennas, and / or receiving ports, and / or receiving weights (beams), and / or receiving sectors, and / or receiving sequences, and / or receiving time domain resources, and / or receiving frequency domain resources.

[0285] The selected resources are grouped according to the received resources to form N first-category resource groups. In the first implementation of this embodiment, Figure 14 As shown in FIG1 , for Q = 9 transmit beams, the receiving end selects 6 transmit beams {1, 2, 3, 5, 8, 9}, among which {1, 2, 3} correspond to the same receive beam 1, transmit beam {5} corresponds to receive beam 2, and transmit beam {8, 9} corresponds to the same receive beam 3. The receiving end divides the 6 selected transmit beam resources into 3 groups, as shown in Table 1.

[0286] Table 1

[0287] The group number of the first type of resource group The second type of scheduled resources (transmit beams) included 0 1,2,3 1 5 2 8,9

[0288] The receiving end needs to feed this grouping information back to the transmitting end. In the grouping scheme shown in Table 1, each group includes different resources, meaning the intersection of different first-category resource groups is empty. However, this embodiment does not preclude the possibility that the intersection of transmit beams from different groups is not empty. In this embodiment, each group includes a different number of resources. However, this embodiment does not preclude the possibility that the transmitting end and the receiving end agree on the same number of resources for each group.

[0289] Figure 14 There is only one receiving beam in each group. This embodiment does not exclude the possibility that the receiving beam is a combination of multiple receiving beams. That is, in this case, the receiving beam is composed of the receiving beams of multiple RF links at the receiving end, and each RF link corresponds to one receiving beam. Figure 15a-15b As shown, the receiving beams corresponding to all the transmitting beams in the same group are a receiving beam combination, which is composed of (the receiving beam of receiving antenna 1, the receiving beam of receiving antenna 2). Figure 15aDifferent receiving antennas correspond to the same beam direction. Specifically, for example, the transmitting beam {1, 2, 3} corresponds to the receiving combination of the receiving end (receiving beam 1 of receiving antenna 1, receiving beam 1 of receiving antenna 2), the transmitting beam {5} corresponds to the receiving combination of the receiving end (receiving beam 2 of receiving antenna 1, receiving beam 2 of receiving antenna 2), and the transmitting beam {8, 9} corresponds to the receiving combination of the receiving end (receiving beam 3 of receiving antenna 1, receiving beam 3 of receiving antenna 2). Figure 15b Different receiving antennas can correspond to different receiving beam directions. For example, the transmitting beam {1, 2, 3} corresponds to the receiving combination of the receiving end (receiving beam 1 of receiving antenna 1, receiving beam 2 of receiving antenna 2). The transmitting beam {5} corresponds to the receiving combination of the receiving end (receiving beam 2 of receiving antenna 1, receiving beam 3 of receiving antenna 2), and the transmitting beam {8, 9} corresponds to the receiving combination of the receiving end (receiving beam 3 of receiving antenna 1, receiving beam 1 of receiving antenna 2). In the above embodiment, the transmitting end can flexibly switch and / or combine the transmitting beams of the same group in the subsequent transmission process according to the feedback information of the receiving end, without affecting the reception of the receiving end. For example Figure 16a The transmitting end notifies the receiving end to receive the signal using the receiving mode corresponding to the transmitting beam group 0. The transmitting end can flexibly use one of the transmitting beams {1, 2, 3} to transmit in different time units. Preferably, the transmitting beam is a radio frequency beam and the transmitting end has only one radio frequency link, such as Figure 16a As shown, in the time unit with index i to index i+3, the receiving end receives the signal using the receiving mode corresponding to group 0, and the transmitting end can freely switch among the transmitting beams {1, 2, 3}. The free switching of these transmitting beams is transparent to the receiving end.

[0290] In another implementation of this embodiment, if the transmitting end has multiple radio frequency links, the above-mentioned transmission beams {1, 2, 3} are different radio frequency beams, or different hybrid beams. The transmitting end notifies the receiving end to receive the signal using the receiving mode corresponding to group 0. At this time, the transmitting end can use different transmission beam combinations to send signals to the receiving end at different times, such as Figure 16bAs shown, if the transmitting end has three RF links at this time, the comprehensive system performance is in the time unit with index i, and the three RFs can be directed to the transmission beams {1, 2, 6} in turn (at this time, the transmission beam 6 is directed to other receiving ends). Then, the transmission beams 1 and 2 can be used to send signals to the receiving end at the same time, or the transmission beams at each moment are the weighted combination values ​​of the transmission beams {1, 2, 3}. For example, the transmission beams {1, 2, 3} are emitted by three different RF links, and then at different times, different baseband weighting values ​​are used to obtain the final transmission beams, which are the mixed beams of the weighted combination of the transmission beams {1, 2, 3}. These different mixed beams are transparent to the receiving end.

[0291] In the above embodiment, preferably, Q=9 transmission beams are sent by a radio frequency link in a time division manner. In this case, Q time division units are required. The second embodiment is generated by time division plus frequency division and code division. When the Q transmission beams correspond to radio frequency beams, and the transmitting end has two radio frequency links, each radio frequency link sends one of them at each moment, such as Figure 17 As shown, Q = 9 transmit beams can be transmitted in 5 moments, or the two transmit beams in each time division unit can be further multiplexed and transmitted using one or more of time division, frequency division, and code division. If each time division unit further utilizes time division, then each time division unit can further include smaller time units. The Q different beams can originate from the same transmitting node or from multiple transmitting nodes, where the different transmitting nodes correspond to different base stations, or to RF transmitting devices at different physical locations within the same base station.

[0292] In the above embodiment, the receiving end can only generate a receiving mode corresponding to one group at a time, and the receiving modes of different groups can only be generated by time division. Therefore, the transmission beams of the same group can be sent to the receiving end by one or more of the time division / frequency division / space division modes, but the transmission beams in different groups can only be sent to the receiving end by time division, and cannot be sent to the receiving end by frequency division and space division. That is, the multiplexing set of transmission beams of different groups is a true subset of the multiplexing mode set of transmission beams in the same group. At this time, in order to further reduce the implementation complexity, the transmitting end and the receiving end can agree that the receiving end only feeds back one group, that is, N is the agreed value 1. In the subsequent data transmission stage, the receiving end uses the receiving mode of the corresponding group to receive, and the transmitting end flexibly changes the transmission beam. The receiving end's reception and the transmitting end's transmission can be transparent to both parties.

[0293] exist Figure 15a-15bIn this embodiment, the receiving resources of different groups correspond only to different RF receiving beam combinations. This embodiment does not exclude the possibility that the receiving resources of different groups correspond to the same RF beam combination, but different hybrid beams, where the hybrid beam is a beam composed of a baseband beam and a RF beam. In this case, the receiving end can also generate receiving modes corresponding to different groups at the same time. In this case, the group indication information preferably includes a first-level group and a second-level group, and the first-level group includes multiple second-level groups. The receiving end can only generate resources in different first-level groups by time division, and the receiving modes corresponding to multiple second-level groups in the first-level group can be generated at the same time.

[0294] The above-mentioned method groups the selected resources according to the received resources to form N first-class resource groups. The second implementation method of this embodiment is as follows: Figure 11 As shown in the figure, each sub-band corresponds to 9 transmit beams. Correspondingly, the receive beams corresponding to each sub-band may also be different. However, the receiving end can only generate one receiving mode at a time, so the sub-bands need to be grouped. Sub-bands in the same group correspond to the same receiving mode, and different sub-bands correspond to different receiving modes. Figure 18a As shown, at this time, it is divided into two groups according to the receiving mode, as shown in Table 2.

[0295] Table 2

[0296]

[0297]

[0298] In the subsequent transmission phase, the subbands in the same group in Table 2 can be scheduled to the receiving end at the same time or only some of them can be scheduled. Subbands in different groups cannot be scheduled to the receiving end at the same time. Because the receiving modes of different groups are different, the receiving end can only generate one receiving mode at a time. For example Figure 18a The receiving beams 1, 2, and 3 in the figure are RF receiving beams, and the receiving end has only one RF link. Therefore, the receiving end can only use one of the receiving beams 1, 2, and 3 to receive signals at a time. Figure 18a Different subbands of the same group can have different transmit beam sets, and even the intersection of transmit beam sets of different subbands can be empty. This is based on the assumption that the transmitter can generate multiple transmit beams at the same time, for example, there are multiple RF links, and / or the transmit beam is a mixed transmit beam, such as Figure 18aIf the transmission beams {1, 2, ..., 9} are all RF beams, the above feedback method requires the transmitter to have at least 4 RF links. In the second implementation of this embodiment, it is further restricted that the set of transmission beams corresponding to different sub-bands in the same group can all be generated at the same time by the transmitter, that is, the number of all different transmission beams corresponding to the same group is less than or equal to the number of transmission antennas, or the number of all different transmission beams corresponding to the same group is less than or equal to the number of transmission antennas allocated to the receiving end. In the third implementation of this embodiment, the transmission beams corresponding to the sub-bands of the same group are restricted to be the same or have intersections. Figure 18b The grouping situation at this time is shown in Table 3. At this time, it is assumed that the number of beams that the transmitter can generate simultaneously is limited. For example, the transmitter can only generate two transmission beams from beams 1 to 9 per time unit.

[0299] In the above subband grouping method, in the subsequent transmission phase, if the transmitter instructs the receiver to switch to the receiving mode corresponding to group 0, the transmitter can freely schedule between subbands {1,3} in different time units, and can schedule only one or both at the same time. If subband 2 is to be scheduled, the receiver must be notified to switch the receiving mode to the receiving mode corresponding to group 1. Only subband 2 can be scheduled in one time unit, and two different resources in subband group {1,3} and group {2} cannot be scheduled at the same time. Figure 18c As shown. In the above embodiment, each subband can correspond to multiple transmit beams. Of course, it is also possible to further restrict each subband to only need to feedback one transmit beam. In this example, the transmitting end can also indicate the receiving mode of the receiving end through the subband scheduling status. If the signaling notification of the scheduled subbands in the transmission phase is one or two of the subbands {1, 3}, then the receiving mode is naturally directed to receive beam 1. If the signaling notification of the scheduled subbands in the transmission phase is subband {2}, then the receiving mode is naturally directed to receive beam 2. At the same time, the number of bits of the resource allocation sub-segment in the transmission phase signaling can be determined based on the number of subbands included in each group. For example, if the signaling notification of the receive beam is group 0 in Table 2 or Table 3, then the number of bits of the resource allocation sub-segment in this case is determined based on the resource allocation mode corresponding to the maximum of two subbands. For example, if the signaling notification of the receive beam is group 1 in Table 2 or Table 3, then the number of bits of the resource allocation sub-segment in the subsequent signaling information is determined based on the resource allocation mode corresponding to the maximum of one subband. In short, the number of bits of the time-frequency resource allocation field is determined based on the group index. Specifically, the group index may be previously notified, and in this case, the number of bits of the time-frequency resource field in the dynamic signaling may be obtained according to the group index.

[0300] Table 3

[0301]

[0302]

[0303] In the above embodiment, the receiving end cannot generate different receiving modes corresponding to different first-type resource groups at the same time, that is, the receiving end can only generate a receiving mode corresponding to one first-type resource group at each time. The receiving modes of different first-type resource groups can only be generated in a time-division manner.

[0304] The selected resources are grouped according to the received resources to form N first-class resource groups. In the third implementation of this embodiment, the receiving end groups the transmit beams according to the receiving antennas, and the number of the first-class groups is less than or equal to the number of antennas at the receiving end. Figure 19 As shown in the figure, the physical positions of the four antennas at the receiving end are different, and different receiving antennas see different transmission beams. In this case, the transmission beams are grouped by antenna. Figure 19 ,The situations of different groups are shown in Table 4.

[0305] Table 4

[0306] The first resource group number Included second type of resources (transmit beam number) 0 (corresponding to receiving antenna 1) 1,2,3 1 (corresponding to receiving antenna 2) 4,5 2 (corresponding to receiving antenna 3) 6,7 3 (corresponding to receiving antenna 4) 8,9

[0307] exist Figure 19 As shown, each antenna of the receiving end has a corresponding transmit beam, that is, the receiving performance of some transmit beams at each receiving antenna exceeds the predetermined threshold. This embodiment does not exclude the possibility that the receiving performance of all transmit beams at some receiving antennas is lower than the predetermined threshold, that is, the number of groups of the first type of resource is less than or equal to the number of receiving antennas. In the example of Table 4, the intersection of the transmit beam sets corresponding to different receiving antennas is empty. This embodiment does not exclude the possibility that the intersection of the transmit beam sets corresponding to different antennas is not empty. The transmitting end indicates the group index or a combination of group indexes in the subsequent transmission stage. For example, it indicates that the receiving end needs to adopt the receiving mode corresponding to group {0,1}. At this time, the receiving end can use the receiving antenna {1,2} corresponding to group {0,1} to receive the signal. At this time, the receiving end can generate the receiving modes corresponding to all groups at the same time.

[0308] At this time, the sending end can agree with the receiving end that in subsequent transmissions, resources of the same group cannot be spatially multiplexed and sent to the receiving end, and resources of different groups can be spatially multiplexed and sent to the receiving end, and the maximum number of layers of spatial multiplexing is less than or equal to the number of groups of the first type of resource groups.

[0309] The selected resources are grouped according to the received resources to form N first-category resource groups. In the fourth implementation of this embodiment, as shown in FIG. Figure 20As shown in the figure, the transmitting antennas are relatively far apart. The same transmitting beam direction emitted from different transmitting antennas will have different reception performances at the same receiving end. In this case, the receiving end needs to obtain the transmitting beam combination of each transmitting antenna based on the equivalent channel. Figure 20 As shown, at this time, the transmitter has 2 transmitting antennas and the receiver has 2 receiving antennas. Each transmitting antenna at the transmitter corresponds to 9 transmitting beams, and each receiving antenna at the receiver corresponds to 3 receiving beams. If each antenna can only generate one beam at each time, then 9×3=27 time units are required to obtain the channel response between each transmitting beam of each transmitting antenna and each receiving beam of each receiving antenna. When each transmitting antenna uses one transmitting beam and each receiving antenna uses one receiving beam, a 2×2 equivalent channel is obtained.

[0310]

[0311] If each antenna corresponds to one RF link, refer to Figure 8 , assuming P=Y=2,H 2X*2O Corresponding to the channel response between the transmitting array and the receiving array, It is an X-dimensional row vector, corresponding to the weighted values ​​of the X receiving arrays corresponding to the i-th receiving antenna, and corresponding to a receiving beam of the i-th receiving antenna. It is an O-dimensional column vector, which represents the RF weight value on the antenna array corresponding to the j-th transmitting antenna, corresponding to a transmitting beam of the j-th transmitting antenna. T There are 9 2 = 81 combinations, where each combination consists of (transmitting beam of transmitting antenna 1, transmitting beam of transmitting antenna 2), and the receiving end W R There are 3 2 = 9 combinations, where each combination consists of (the transmit beam of receiving antenna 1, the transmit beam of receiving antenna 2), and there are a total of 9×81=729 combinations. The receiving end obtains the optimal one based on certain criteria. Combination, such as the channel capacity maximization of the equivalent channel composed of formula (1) is preferred Or based on other simple criteria A send-receive combination pair, the receiving end sends the The corresponding index is fed back to the receiving end. It is composed of a transmit beam of transmit antenna 1 and a transmit beam of transmit antenna 2, and is fed back in a grouped manner. Of course, it is allowed that the transmission beam on one of the transmitting antennas is empty at this time. In this case, the feedback information needs to further include the transmitting antenna information corresponding to each transmitting beam, or the indication that the transmitting beam on the transmitting antenna is empty. When there are multiple, feedback different As shown above, each group contains one or two transmit beam indices, corresponding to the transmit beam indices on the two transmit antennas of the transmitter, such as Figure 20 Two groups are shown, as shown in Table 5. The receiving end cannot simultaneously generate reception mode combinations corresponding to different groups. In subsequent transmissions, the beam combinations corresponding to different groups can only be used to transmit information to the receiving end via time division multiplexing. In this manner, the receiving end can further send the transmitting end RI information that can be transmitted if the transmit beam combination is used to transmit information to the receiving end. Figure 20 There is no intersection between different transmission beam combinations in this embodiment. This embodiment does not exclude the situation where there is an intersection between different transmission beam combinations. Figure 21 There is no intersection between different receiving beams, and this embodiment does not exclude the possibility of intersection, but different receiving beam combinations cannot completely overlap. The transmitting end can use all the transmitting antennas in the group to send data to the receiving end in subsequent transmissions based on the feedback information of the receiving end, or use part of the transmitting antennas in the combination to send data to the receiving end, and the remaining antennas are used to serve other users. If the information of other users served by the remaining antennas and the receiving end is on the same time-frequency resources, that is, MU-MIMO transmission is performed, then it is necessary to avoid using the transmitting beams in the combination for the transmitting beams on the remaining antennas, so as to avoid large multi-user interference. For example, the receiving end is instructed to use the receiving mode corresponding to group 0, and the transmitting end only uses transmitting antenna 1 to send data to the receiving end. When the data of other users occupying the same time-frequency resources as the receiving end uses transmitting antenna 2, avoid using transmitting beam 2.

[0312] Table 5

[0313]

[0314]

[0315] The selected resources are grouped according to the received resources to form N first-category resource groups. In the fifth implementation of this embodiment, the resources in the same first-category resource group have one or more types of received resource differences that are less than the agreed threshold, such as Figure 21When the receiving end uses receiving beams {1, 3} to receive simultaneously (for example, the receiving end has two receiving antennas, or the receiving end has more than two receiving antennas), two or three of the transmitting beams {1, 4, 5} transmit simultaneously, and the rank of the equivalent channel obtained by the similar formula (1) is 1. Two of the transmitting beams {6, 9} transmit simultaneously, and the rank of the equivalent channel obtained by the similar formula (1) is 1. Any one of the transmitting beam group {1, 4, 5} and any one of the transmitting beam group {6, 9} transmit simultaneously, and the rank of the equivalent channel obtained by the similar formula (1) is 2. The two eigenvalues of the 2*2 equivalent channel are not very different, and two-layer transmission can be performed at this time. The grouping mode of the transmitting beams at this time is shown in Table 6.

[0316] Table 6

[0317] The first resource group number Included second type of resources (transmit beam) 0 (1,4,5) 1 (6,9)

[0318] At this time, the receiving modes corresponding to the two groups are the same, both of which are receiving beams {1, 3}. When the transmitting end has multiple transmitting antennas, or the transmitting beam is a hybrid beam, when the transmitting end uses multiple beams in one group to transmit information to the receiving end, only one layer of data can be transmitted. When the transmitting end uses two transmitting beams belonging to different groups to transmit data to the receiving end, two layers of data can be transmitted, or transmission can be performed based on the transmitting diversity mode. That is, at this time, the resources of the same group cannot be used for spatial division multiplexing when transmitting information to the receiving end. The resources of different groups can be used for spatial division multiplexing when transmitting information to the receiving end. At this time, the number of the first type of groups is equal to the maximum number of layers that can be transmitted.

[0319] Of course, the different transmitting beams described above can also be represented by one or more of the following: ports, time domain resources, frequency domain resources, sequence resources, and sector resources. In summary, different beams are represented by different resources in the second type of resource group. For example, one second type of resource group is a CSI-RS resource, and different ports in a CSI-RS resource represent different beams.

[0320] In the above embodiments, different receiving beams can also be represented by one or more of the following: receiving ports, receiving sectors, receiving sequences, and receiving time-frequency resources.

[0321] In the above embodiments, the transmission process includes one or more of the following transmission processes: a data transmission process, a control channel transmission process, and a measurement reference signal transmission process. Specific embodiment 3

[0323] The implementation process of the embodiment is similar to that of embodiment 1, and the embodiment specifically describes the division of the first type of resource group according to the selected M resources in step three.

[0324] In the first implementation of the embodiment, the difference between the channel qualities corresponding to the resources in the same first type of resource group is less than or equal to a threshold R1, and the difference between the channel qualities corresponding to the resources in different first type of resource groups is greater than a threshold R2, wherein the R1 or R2 is agreed by the sending end and the receiving end, or configured by the sending end to the receiving end; the R1 and the R2 can be the same.

[0325] In the second implementation of the embodiment, the difference between the received signal qualities corresponding to the resources in the first type of resource group is less than or equal to a threshold r1, and the difference between the received signal qualities corresponding to the resources in different first type of resource groups is greater than a threshold r2, wherein the r1 or r2 is agreed by the sending end and the receiving end, or configured by the sending end to the receiving end; the r1 and the r2 can be the same.

[0326] After the grouping, the number of feedback bits of the channel qualities (or signal qualities) corresponding to different resources in the group can be effectively reduced. For example, when the channel qualities (or signal qualities) of the resources in the group are fed back by difference, the number of feedback bits can be effectively reduced. At this time, an average channel quality (or signal quality) or a maximum channel quality (or signal quality) can be fed back for each group, and then the channel qualities of different resources in the same group are fed back by difference. The sending end can obtain the priorities of different groups based on the channel qualities (or signal qualities). The priorities of the resources corresponding to the groups with good channel qualities (or signal qualities) are high, and the priorities of the resources corresponding to the groups with poor channel qualities (or signal qualities) are low, so that the sending end can reasonably use the resources to improve the resource utilization rate, and when the link is interrupted, the communication can also be recovered by using a standby link. For example, the sending end and the receiving end agree on the resources with good existing channel qualities, and the resources with poor channel qualities are used only after the link is interrupted. Embodiment 4

[0328] The implementation process of the embodiment is similar to that of embodiment 1, and the embodiment specifically describes the division of the first type of resource group according to the selected M resources in step three.

[0329] Optionally, a difference in TA parameters corresponding to signals sent on resources within the same first-type resource group is less than or equal to a threshold T1; a difference in TA parameters corresponding to signals sent on resources in different first-type resource groups is greater than a threshold T2; T1 or T2 is agreed upon by the transmitting end and the receiving end; or configured by the transmitting end to the receiving end; or determined according to the configuration of the CP; T1 and T2 may be the same, the resources may be resources in the measurement phase, the signals sent on the resources are after the measurement phase or in the next-level measurement phase, and signals or reference signals are sent on resources marked in the measurement phase;

[0330] In the first implementation of this embodiment, the TA may be an advance amount of the uplink transmission time relative to the corresponding downlink transmission time unit, such as Figure 22a As shown, the transmitting end sends Q uplink access requests to the base station through multiple Preamble resources and / or multiple transmit beam resources. The TA information of the Q uplink access requests arriving at the receiving end is different. The receiving end (i.e., the base station) selects M uplink access requests and divides the selected M uplink access requests into 4 regions according to their arrival time. The difference in TA information in the same group is less than or equal to T1, and the TA information in different groups is greater than the threshold T2. Figure 22a T1=T2 value, such as Figure 22a The receiving end groups the preamble resources and feeds them back to the transmitting end. In the subsequent transmission phase, the transmitting end adjusts the transmission time of the corresponding signals on the preamble resource signals of different groups according to the TA information. For example, different preambles represent different transmission beams, so the TAs used in different beam groups can be different.

[0331] In the second implementation of this embodiment, TA can be directly the distance between the time when the signal reaches the receiving end and the starting position of the current transmission unit of the receiving end. For example, the receiving end and the transmitting end agree that the transmitting end sends the signal at the beginning of the i-th transmission unit, and the TA is the distance between the starting position of the signal received at the receiving end and the starting position of the i-th transmission unit.

[0332] In the above implementation, each group only feeds back a TA value, and the transmitting end can further adjust the starting position of the transmitted signal according to the T1 and T2 values ​​in the implementation of the transmission phase. Or only feed back the group index, each group index corresponds to Figure 22a The agreed area. Specific embodiment 5

[0334] The implementation process of this embodiment is similar to that of the specific embodiment 1. This embodiment specifically describes the division of the first type of resource groups according to the CP parameters corresponding to the signals sent on the selected M resources in step 3.

[0335] Optionally, a CP length used when sending signals on resources within the same first-category resource group is less than or equal to t1;

[0336] The CP length used when sending signals on resources within different first-class resource groups is greater than t2, or the CP length used when sending signals on resources within different first-class resource groups is greater than t2 and less than t3, or the CP length used when sending signals on resources within different first-class resource groups is further determined based on the absolute value of the difference between the group number indexes of the first-class resource groups corresponding to the resources and the agreed t4. The t1, t2, or t3 is agreed upon by the transmitting end and the receiving end; or the transmitting end configures it to the receiving end. t1 and t2 can be the same, t3 is greater than t2, and t4 = t1.

[0337] like Figure 22b As shown, the receiving end feeds back the grouping information shown in Table 7 to the sending end according to the areas where different resources fall. For example, the resources are different measurement beams. As shown in the figure, the sending beam {1,2} falls into area 1, which means that all paths from this beam fall into area 1, that is, the starting path and the multipath extension part from the beam fall into area 1.

[0338] Table 7

[0339] Group index of the first type of resource group Included second type of resources (transmit beams) 0 1,2 1 3,4 2 5,6 3 7,8

[0340] The first implementation method for this grouping is that the transmitting end and the receiving end agree that in the transmission phase after feedback, when different transmission beams in the same group are transmitted at the same time, or different transmission beams in the same group are switched in different time units, the CP length corresponding to the OFDM symbol used for information transmission is CP1 (the length of CP1 is less than or equal to t1). When beams from different groups are jointly transmitted at the same time, (x+1)×CP1 is used. In this embodiment, x is the maximum absolute value of the index difference of the group to which the beam belongs. For example, the feedback information based on the CP length is as described in Table 7. At this time, the transmission beam in the transmission phase is as follows: Figure 22c As shown, at this time, a long CP is used on the first OFDM symbol where the transmit beam combination mode is changed. At this time, the transmit beams belonging to the same group index use CP1 without changing the CP length when switching or jointly transmitting, wherein the length of the long CP is greater than the length of CP1, or the long CP is 4CP1. Figure 22d As shown. Or as Figure 22e As shown, long CPs are used at the start and end positions where the transmit beam combining mode is changed.

[0341] The first method for the receiving timing of the receiving end is to start from the starting position of the smallest group index in the group index corresponding to the transmitting beam, such as Figure 22cThe second method is to add a micro-synchronization signal at the beginning of the change of the transmit beam combination index, that is, Figure 22c A micro-synchronization signal is added to the beginning of the shaded area for receive timing search at this stage. The third method combines the first and second methods above, namely, synchronization is performed based on the synchronization signal near the starting position of the smallest group index in the group index. The starting position of the group index is the starting position corresponding to the group obtained in the previous beam training or synchronization phase. In this case, preferably, in each group of resources, the first resource is designated as the synchronization resource for this group of resources, that is, the downlink timing of this group of resources is based on the signal transmitted on the first resource.

[0342] In the second implementation of this embodiment, the starting positions of the receiving timings of the receiving ends of different transmission beams are all Figure 22b The starting point of area 1 in the , where area 1 is the starting position of a transmission unit, or the area 1 is the starting position of a transmission unit obtained by the receiving end based on the synchronization signal. At this time, the CP lengths of resources in different groups are different, that is, the CP length is determined according to the maximum group index of the first type of resource group corresponding to the currently scheduled resources, and the CP length corresponding to the maximum group index is adopted. If the current scheduling sends beam 1 at this time, the CP length is the CP length corresponding to area 1. If the current scheduling sends beam 3 at this time, the CP length is the CP length corresponding to area 2, and the CP length corresponding to area 2 is greater than the CP length corresponding to area 1. If the currently scheduled sending beam is {1, 7, 8}, the corresponding CP length is the CP length corresponding to area 4. At this time, the CP length corresponding to area 4 is greater than or equal to the length between the starting position of area 1 and the end position of area 4.

[0343] The third implementation method of this embodiment is as follows: Figure 22f As shown, the OFDM symbol occupied by the starting control field of a time unit adopts a fixed CP length, preferably the fixed CP length is a long CP length, and the CP length of the data field is obtained according to the group index indication information. Or as Figure 22g As shown, the OFDM symbol occupied by the starting control field of a time unit adopts a fixed CP length, preferably the fixed CP length is a long CP length, the CP length of the data field is obtained according to the group index indication information, and the ending CP length of the data field is also a fixed CP length, preferably the fixed CP length is a long CP length.

[0344] The fourth implementation method of this embodiment is as follows: Figure 22h As shown, the starting OFDM symbol and the ending OFDM symbol of a time unit adopt a fixed CP length, preferably the fixed CP length is a long CP length, and other OFDM symbols use a short CP length, wherein the long CP length is greater than a predetermined threshold and the short CP length is less than or equal to the predetermined threshold. Specific embodiment 6

[0346] The implementation process of this embodiment is similar to that of the specific embodiment 1. This embodiment specifically describes the division of the first type of resource groups according to the multiplexing mode corresponding to the signals sent on the selected M resources in step 3.

[0347] The set of multiplexing modes that can be used when sending signals on resources within the same first-class resource group is set A; the set of multiplexing modes that can be used when sending signals on resources in different first-class resource groups is set B; A and B are different; further, B is a proper subset of A, for example, subset A is any one or a combination of time division / frequency division / code division / space division, while subset B is only time division. Alternatively, A is a proper subset of B, wherein set A is any one or a combination of time division / frequency division, and set B is any one or a combination of time division / frequency division / space division.

[0348] The set of multiplexing methods that can be used when sending signals on resources within the same first-category resource group represents the set of multiplexing methods that can be used in the transmission stage after feedback if the first communication node uses different resources in the same first-category resource group to send information to the second communication node. Specific embodiment 7

[0350] The implementation process of this embodiment is similar to that of the specific embodiment 1. This embodiment specifically describes the division of the first type of resource groups according to the quasi-co-location information corresponding to the signals sent on the selected M resources in step 3.

[0351] Optionally, the quasi-co-location information corresponding to the resources in the same group is the same, and the quasi-co-location information corresponding to the resources in different groups is different. The quasi-co-location information of the above two resources is the same, which is quasi co-located in the existing LTE, that is, the large-scale information related to the channel or signal of one resource can be inferred from the large-scale information related to the other channel or signal, where the large-scale information includes Doppler spread, Doppler frequency shift, average gain, and average delay.

[0352] Alternatively, another grouping method is to ensure that the difference in quasi-co-location information corresponding to resources in the same group is within an agreed range. Alternatively, the quasi-co-location information corresponding to resources in the same group falls within an agreed range. In short, all resources in the same group are quasi-co-located.

[0353] The transmitting end may allocate QCL information based on the feedback information. For example, for each group, at least one reference resource needs to be sent as the QCL information for the group resources. Preferably, the first resource in each group of resources may be agreed to be the QCL reference resource in the group of resources. That is, each group needs to send at least one reference resource as the QCL information for the group resources. The information of the reference resource may be obtained based on one or more of the following information: the first resource and the index information corresponding to the group.

[0354] The above-mentioned QCL information or quasi-co-location information can also be channel characteristic information, or other equivalent terms (for example, if the channel characteristics of two resources are the same, it means that the two resources are quasi-co-beam, quasi-co-channel), where the channel characteristic information includes at least one of the following information of the reference signal: Doppler spread, Doppler frequency shift, average gain, average delay, average angular spread, AOA (horizontal angle of arrival), ZOA (vertical angle of arrival), AOD (horizontal angle of departure), ZOD (vertical angle of departure). Furthermore, the above-mentioned AOA / ZOA / AOD / ZOD are all average angles. Specific embodiment 8

[0356] In this embodiment, the transmitting end determines third-type grouping indication information, and sends a demodulation reference signal to the receiving end according to the third-type grouping indication information.

[0357] The sending end determines the third category grouping indication information. One way is that the sending end and the receiving end obtain the third category grouping indication information through an agreed rule. The second way is that the sending end receives feedback information from the receiving end, where the feedback information includes the first category grouping indication information, and then the sending end and the receiving end agree that the first category grouping indication information is the third category grouping indication information.

[0358] For example, the third category grouping is grouped according to the receiving resources, that is, the receiving methods corresponding to the resources in the same third category resource group are the same, and the receiving methods corresponding to the resources in different third category resources are different. The receiving end can only generate a receiving method corresponding to one third category group at the same time, and the receiving end can only generate the receiving methods corresponding to different groups at different times.

[0359] For example, Figure 14 In the embodiment shown, the receiving end feeds back the first type of grouping information shown in Table 1. At this time, the sending end obtains that the receiving end has 3 groups, that is, there are 3 different receiving modes, which can be used as follows: Figure 23aThe demodulation reference signal is sent in the manner shown. In this case, the demodulation reference signal is sent three times in time division, allowing the receiving end to blindly detect the reception mode that the data and / or control portion should adopt on the three time-division resources using the three different reception modes corresponding to the three feedback groups. The receiving end then determines the reception mode that the data and / or control portion should adopt from the three different reception modes, thereby allowing the receiving end to adopt the appropriate reception mode for the data and / or control portion. Alternatively, the transmitting end sends in this manner to provide the transmitting end with sufficient scheduling flexibility. In this case, the transmitting end can freely select the transmit beam, which is completely transparent to the terminal. Furthermore, if one of the aligned transmit-receive beam pairs is interrupted, an alternative link can be used to promptly restore the transmission. This is also effective for one scenario: when the receive beam in the original transmit-receive beam pair changes, and the range of the change becomes one of the three reception modes reported, the signal can still be effectively received. Furthermore, using this transmission method also facilitates the receiving end to train the reception mode, and the trained reception mode information can be fed back to the transmitting end.

[0360] In the above embodiment, considering that there is a processing delay between the end of the RS area and the detection of the preferred receiving mode by the receiving end, a guard interval GP may be provided after the end of the RS area, such as Figure 23b As shown, the transmitting end in the GP area does not send valid information, or sends a reference signal.

[0361] Another implementation method for considering processing delay is as follows: Figure 23c As shown, the reception method for the special area in the data region can adopt one of three reception methods based on the implementation method of the receiving end. If the final receiving end, through blind detection of the demodulation reference signal, determines that the data and / or control reception method is the same as the reception method used in the special area, the received signal in the data region can be processed without any processing. If the final receiving end, through blind detection of the demodulation reference signal, determines that the data and / or control reception method is different from the reception method used in the special area, the received portion of the special area is blanked out, and corresponding rate matching is performed during the channel decoding stage, that is, the received signal in the special area is discarded. Alternatively, blanking out can be omitted, and only the demodulation reference signal in the special area and the demodulation reference signal in the data area cannot be channel interpolated. Of course, if the processing delay is negligible, for example, if the processing delay can be processed in the CP area, then the above two processing methods can be omitted and method 23a can be directly used.

[0362] In the above implementation, the repeated transmission of the demodulation reference signal can only achieve the effect of the blind detection reception mode, such as Figures 23a to 23cAs shown, at this time, of the three demodulation reference signals divided by time, one of them can be detected as valid through blind detection in the receiving mode, and the other two demodulation reference signals need to be discarded and cannot be used for demodulation of subsequent data and / or control areas. For this purpose, further enhancements can be made, such as Figure 23d As shown, the control information and RS can be sent three times in time division. In this way, while blind detection of the reception mode is performed according to the RS, coverage enhancement of the control information can also be achieved, because the final reception mode is to select the best one among the three. At this time, the control information of each time division can obtain a combining gain, because the control information in the three time division resources is the same, or soft combining can be performed to achieve coverage enhancement and robustness of the control information. Figure 23d The processing delay in Figure 23b ,23c similar method, or consider that the processing delay can be ignored or no processing is done. Figure 23d In the manner shown, the three time-division control channels achieve the purpose of blind detection of the control channel reception mode, so that the transmission of the control channel can give the transmitter more flexibility. At this time, the reception mode of the subsequent data part can be indicated through the control channel.

[0363] In the aforementioned blind detection process for the reception mode, the number of time-division transmissions of the reference signal is equal to the number of first-category resource groups fed back. In the second implementation of this embodiment, the number of time-division transmissions of the reference signal and / or control channel is an integer multiple of the number of groupings. In the third implementation of this embodiment, the number of time-division transmissions of the reference signal and / or control channel is less than or equal to the number of first-category resource groups fed back. For example, if the high-level layer configures or agrees on the range of the current blind detection reception mode, such as the set of group indices for the first-category resource groups shown in Table 1, and the current blind detection range is agreed to be the reception mode with first-category resource group indices {0,3}, then the receiving end blindly detects the reception mode within the aforementioned reception mode. Alternatively, the transmitting end configures the number of time-division transmissions N1, and the receiving end blindly detects the reception mode using a reception mode within the agreed reception mode set based on certain criteria.

[0364] The receiving method is one or more of the following resources required to receive the signal: receiving beam resources, receiving antenna resources, receiving port resources, receiving precoding matrix resources, receiving time resources, receiving frequency domain resources, and receiving sequence resources.

[0365] In another implementation of this embodiment, the transmitting end sends the demodulation reference signal and / or control channel according to the third type of grouping indication information only in the agreed time unit, and preferably sends the demodulation reference signal and / or control channel only on one time-division resource in the non-agreed time unit. In this case, the receiving end does not receive the demodulation reference signal in a blind detection manner in the non-agreed time unit, and preferably receives the demodulation reference signal and / or control channel in a deterministic manner in the non-agreed time unit. Preferably, the agreed time unit is periodic.

[0366] In an optional implementation of this embodiment, a demodulation reference signal and a control channel are sent on time-division resources, and the reception method of blind detection through the demodulation reference signal is only a reception method of blind detection of the control channel, and the reception method of information after the control channel is notified in the control information.

[0367] Preferably, when the number of packets included in the third type of packet indication information corresponding to different receiving ends is different, the first implementation method is that the different receiving ends are preferably configured by frequency division multiplexing, such as Figure 23e As shown. The second implementation method is to send control information and demodulation reference signals on N1 time-division resources, and N1 is notified to the receiving end through signaling. The third implementation method is to notify the starting position of the transmission domain in the dynamic signaling notification. The fourth implementation method is to notify the starting position of the transmission domain for each frequency domain resource occupied by the receiving end. At this time, the starting positions of the transmission domains of each frequency domain occupied by a receiving end are allowed to be different. The fifth implementation method is to group the frequency domain resources occupied by the receiving end, and group them with the same starting position. Dynamic signaling is used to notify the starting position of each group and the frequency domain resources contained in each group. The sixth implementation method is that the transmission beams of the transmitting ends corresponding to the different receiving ends are spatially multiplexed, and the control information of each transmission beam occupies the entire system bandwidth. In the above-mentioned fourth and fifth implementation methods, the signaling can also be public dynamic signaling. At this time, public signaling performs signaling notification of the starting position of the resources of the entire system bandwidth, or public signaling performs signaling notification of the starting position of the currently scheduled frequency domain resources. Of course, the above-mentioned signaling can also be semi-static signaling. Specific embodiment 9

[0369] The implementation process of this embodiment is similar to that of the specific embodiment 1, and focuses on the feedback method of the receiving end in step 4 for feeding back the selected resource indication information and the indication information of the N first-category resource groups.

[0370] like Figure 24a As shown in FIG, there are a total of 6 transmit-receive beam pairs from the base station to the terminal. These 6 transmit-receive beam pairs are the transmit-receive beam pairs whose link performance exceeds a predetermined threshold measured by the receiving end during the beam training phase or the beam tracking phase. Figure 24b As shown, the base station has other transmission beams to the receiving end, such as transmission beams {6, 7, 8}, but these three beams cannot reach the terminal, or the performance of reaching the terminal is lower than the predetermined threshold.

[0371] In this embodiment, if the number of transmit beam indices is TBN and the number of receive beam indices is RBN, unless otherwise stated, the number of bits required for each transmit beam index in the feedback information in this embodiment is The number of bits required for each receive beam index in the feedback information is Specifically, Figure 24a As shown, it is assumed that TBN=10, RBN=3, then tbnn=4, rbnn=2.

[0372] Regarding the three grouping feedback methods, the first feedback method in this embodiment is that the transmitter and receiver agree to provide feedback for six transmit / receive beam pairs. The receiver then provides feedback for each transmit / receive beam pair to the transmitter, as shown in Table 1. Each item requires both the transmit beam index and the receive beam index. Therefore, each item (transmit beam index, receive beam index) requires 4 + 2 = 6 bits, and a total of 6 × 6 = 36 bits of feedback are required for the six transmit / receive beam pairs. The 36 feedback bits are shown in Table 8. The arrangement of the feedback bit content in Table 8 is only an example and does not exclude other arrangements, but the feedback bit content remains unchanged.

[0373] Table 8

[0374]

[0375] Regarding the feedback mode of these three groups, the second feedback mode of this embodiment is that the transmitting end and the receiving end agree that three groups of transmit and receive beam pairs need to be fed back. The receiving end and the transmitting end agree on the maximum number of transmit beams contained in each group, for example, 3. For groups that do not have 3 transmit beams in the group, the number of bits is padded for feedback. Due to the padded number of bits, the number of bits required for the transmit beam index at this time is The number of padded bits is a value greater than or equal to the TBN value, for example, 15. In this case, each transmit beam index requires 4 bits, each group requires 4×3=12 bits, and 3 groups require 3×12=36 bits. The 36 feedback bits are shown in Table 9:

[0376] Table 9

[0377] Feedback bit index Feedback bit Feedback bit content 0～11 (0000,0001,0011) Transmit beam group 0 12～23 (0101,1111,1111) The first complete transmission beam group 24～35 (0010,0100,1111) Second complete transmission beam group

[0378] The third feedback mode of the three groups is that the receiving end determines the number of feedback groups according to the measurement result, a first end symbol is added at the end position of each sending beam group, and a second end symbol is added at the end position of the last group. The first and second end symbols and each sending beam index occupy the same number of bits, and the end symbol is a value greater than or equal to TBN, and similar to the second embodiment, the number of bits occupied by each sending beam index The first and second end symbols are two values greater than or equal to TBN and different, for example, the first end symbol is 11 and the second end symbol is 15, and each sending beam index needs 4 bits, and 6 sending beams need 4*6=24 bits, 3 end symbols need 4*3=12 bits, and a total of 24+12=36 bits are needed. The feedback bits are shown in Table 10.

[0379] Table 10

[0380] Feedback bit index Feedback bit Feedback bit content 0～15 (0000,0001,0011,1011) The 0th transmit beam packet + the first terminator 16～23 (0101,1011) First transmit beam packet + first terminator 24～35 (0010,0100,1111) Second transmit beam packet + second terminator

[0381] The fourth feedback mode of the three groups is that the receiving end and the sending end agree to feed back 3 groups, a first end symbol is added at the end position of each sending beam group, and the end symbol is a value greater than or equal to TBN, and at this time If the end symbol is 15, each sending beam index needs 4 bits, 6 sending beams need 4*6=24 bits, 2 end symbols need 4*2=8 bits, and a total of 24+8=32 bits are needed. The feedback bits are shown in Table 11.

[0382] Table 11

[0383] Feedback bit index Feedback bit Feedback bit content 0～15 (0000,0001,0011,1111) The 0th transmit beam packet + the first terminator 16～23 (0101,1111) First transmit beam packet + first terminator 24～31 (0010,0100) Second transmit beam group

[0384] The fifth feedback mode of the three groups is that the receiving end and the sending end agree to feed back the number of sending beams, and then feed back the starting and ending beam indexes of the sending beams in the group containing more than one sending group. At this time, a total of 4*6+4*3=24+12=36 bits are needed, and the feedback bits are shown in Table 12.

[0385] Table 12

[0386]

[0387]

[0388] Alternatively, as shown in Table 13, the transmit beam start index corresponding to the transmit packet feedback containing more than one transmit packet can be fed back. In this case, a total of 4×6+2×3=24+6=30 bits are required, and the feedback bits are shown in Table 13.

[0389] Table 13

[0390] Feedback bit index Feedback bit Feedback bit content 0～3 (0000) Transmit beam 0 4～7 (0001) Transmit beam 1 8～11 (0011) Second transmit beam 12～15 (0101) Transmit beam 3 16～19 (0010) 4th transmit beam 20～23 (0100) Transmit beam 5 24～26 000 Group 0 starting transmit beam index 27～29 011 Index of the first group of starting transmit beams 27～29 100 The index of the second group of starting transmission beams

[0391] Regarding the feedback mode of these three groups, the sixth feedback mode of this embodiment is that the receiving end and the sending end agree that the number of groups to be fed back is 3, and the jth group is used Bit information feedback, where represents the number of combinations of y numbers selected from x numbers, Lj is the number of transmission beams contained in the jth group, and the receiver needs to feed back the Lj information contained in each group to the transmitter. If the maximum number of beams contained in a group is 4, then the Lj information in each group requires 2 bits. In this case, the number of bits required for 3 groups is: The set of sending modes contained in the jth group {b i,j -1,i=0,1,...,Lj-1}, where 1≤b i,j ≤TBN,b i,j <b i+1,j use Indicates that Where TBN is the total number of transmission modes, 0≤j≤N-1, and Lj is the number of transmission packets contained in the jth packet. The content of the 23-bit information is shown in Table 14.

[0392] Table 14

[0393] Feedback bit index Feedback bit Feedback bit content 0～1 10 The number of transmit beams contained in the 0th transmit beam group - 1 2～3 00 The number of transmission beams contained in the first transmission beam group - 1 4～5 01 The number of transmission beams contained in the second transmission beam group - 1 6～12 (0101) The transmit beam index set contained in the 0th transmit beam group 13～16 (0010) The first transmission beam group contains a set of transmission beam indices 17～22 (0100) The second transmission beam group contains a set of transmission beam indices

[0394] Regarding the feedback mode for these three groups, the seventh feedback mode of this embodiment is that the receiving end and the transmitting end agree that the number of groups to be fed back is 3, and each group is represented by 10 bits. In this case, there are 30 bits representing the 3 groups, and each of the 10 bits in each group corresponds to a transmission beam. A bit value of 0 indicates that the transmission beam is not included in the group, and a bit value of 1 indicates that the transmission beam is included in the group. Conversely, a bit value of 1 indicates that the transmission beam is not included in the group, and a bit value of 0 indicates that the transmission beam is included in the group. The content of the 30-bit information is shown in Table 15:

[0395] Table 15

[0396] Feedback bit index Feedback bit Feedback bit content 0～9 1101000000 Group with index 0 10～19 0000010000 Group with index 1 20～29 0010100000 Group with index 2

[0397] In the above embodiment, the transmitting end and the receiving end agree on the number of packets. If the number of packets is variable, the feedback information needs to further include information on the number of packets.

[0398] Figure 24a The intersection of the transmission beams between each group is empty. This embodiment does not exclude the situation where the intersection of the transmission beams of each group is not empty. Specific embodiment 10

[0400] The implementation process of this embodiment is similar to that of the specific embodiment 1, and focuses on the feedback method of the receiving end in step 4 for feeding back the selected resource indication information and the indication information of the N first-category resource groups.

[0401] In this embodiment, the base station and the terminal agree that each group contains the same number of transmission beams. For example, each transmission group contains L transmission beams. Figure 24c As shown. At this time, each group uses in It means the number of combinations of selecting y numbers from x numbers. Figure 10 The transmit and receive beam pairs are shown in Table 16.

[0402] Table 16

[0403]

[0404]

[0405] At this time, each group is represented by abbi in the following formula. At this time, the set of transmit beam indices contained in this group is {b i -1,i=0,1,...,L-1}, and 1≤b i ≤TBN,b i <b i+1

[0406]

[0407] in It represents the number of possible combinations of selecting y numbers from x numbers.

[0408] As shown in Table 2, and assuming in this embodiment that TBN=10, L=2, the number of bits required for each packet is: Then the number of bits required for the three packets is 3×6=18 bits.

[0409] In the above embodiment, only the selected first-category resources and the indication information of the first-category resource group are fed back in the group. The present invention does not exclude the possibility of further feeding back corresponding CQI and other information for each resource or each first-category resource group. Alternatively, instead of feeding back a specific CQI value, it is agreed that the resources in each first-category resource group are arranged in order of CQI value, or in order of resource reception performance, such that, for example, the first resource in each group corresponds to the best reception performance, or the first resource in each group corresponds to the worst reception performance. Specific embodiment 12

[0411] The implementation process of this embodiment is similar to that of Specific Embodiment 1, focusing on the feedback method of the receiving end feeding back the selected resource indication information and the indication information of the N first-category resource groups in step 4. The selected resource indication information and the indication information of the N first-category resource groups are hereinafter referred to as feedback information.

[0412] In this embodiment, the number of first-category groups and the number of resources included in each first-category group may change in each feedback. This embodiment focuses on the resources used by the receiving end to send the feedback information.

[0413] In a first implementation of this embodiment, the transmitting end and the receiving end agree on the maximum number of packets and the maximum number of resources included in each packet, and then allocate feedback resources according to the possible maximum value of the feedback information.

[0414] In the second implementation of this embodiment, the receiving end requests feedback resources based on the actual amount of feedback information, and the sending end allocates corresponding feedback resources according to the number of feedback resources carried in the request information. For example, the receiving end calculates that the current feedback information occupies 24 bits, and then sends a request message to the sending end, where the request message carries 24 bits of length information, or information about the length area in which the 24 bits fall. For example, if the sending end and the receiving end agree that the number of bits in the length area 1 ranges from {1 to 15} and the number of bits in the length area 2 ranges from {16 to 30}, then the receiving end feedback length area is 2. The sending end allocates resources for sending the feedback information to the receiving end based on the length-related information fed back by the receiving end, and the receiving end sends the feedback information to the sending end on the allocated resources.

[0415] In the third implementation of this embodiment, the receiving end uses multiple feedback resources for feedback, and the multiple feedback resources are allocated to the receiving end by the transmitting end. There is a flag bit at the end of each feedback resource to indicate whether the first type of group indication information has been fully fed back. If not, the receiving end continues to send feedback information on subsequent feedback resources. Preferably, for example, if the number of first type groups is 5, feedback information is sent on 5 consecutive feedback resources. If the number of first type groups is 3, feedback information is sent on 3 consecutive feedback resources. The continuous feedback resources indicate that feedback information is sent uninterruptedly on multiple feedback resources allocated to the transmitting end, wherein the multiple feedback resources may be discrete in time, but are agreed upon by the transmitting end and the receiving end. As Figure 24e As shown, the receiving end (e.g., a terminal) feeds back the group indication information on three uplink feedback resources. The group indication information on each feedback resource indicates whether the first type of group indication information has been fed back completely. That is, at this time, there is a mapping relationship between the group number information and the resource information used to send the feedback information. Specific embodiment 13

[0417] In this embodiment, the transmitting end sends the second-type grouping information as signaling information to the receiving end. The receiving end obtains other transmission parameters and / or reception parameters corresponding to the transmitted signal based on the second-type grouping information, and then receives and demodulates the signal sent by the transmitting end. The second-type grouping indication information includes one or more of the following information: grouping index set information and grouping mode indication information. The grouping index set includes at least one grouping index. The second-type grouping information can be the signaling information sent to the receiving end during the transmission phase after the transmitting end (e.g., a base station) receives feedback information from the receiving end in Example 2.

[0418] In the above embodiment, the signaling information may be dynamic signaling information or semi-static signaling information. The transmitted signal may be merely the acquisition of transmission parameters and / or reception parameters of the signal in the time unit (e.g., subframe) in which the signaling information is located. The transmitted signal may also be a plurality of time units starting after an interval Ntime0 after the time unit in which the signaling information is located, where Ntime0 may be 0, indicating that the signaling information includes the time unit in which the signaling information is located. That is, the signaling information indicates that the receiving end will switch transmission parameters and / or that the receiving end needs to switch reception parameters, and the parameters after switching are applicable to at least one of the following transmitted signals: a control channel, a data channel, and a reference signal.

[0419] like Figure 24d As shown, the dynamic control field indicates the second type of grouping information, and the receiving end obtains the data sent to the receiving end by the data field according to the second type of grouping information.

[0420] The transmission parameters include one or more of the following parameters: the reception mode to be adopted for receiving the signal; the MCS set corresponding to the signal; the multiplexing mode set adopted by the signal; the CP length corresponding to the signal; the number of spatial multiplexing layers adopted by the signal; the demodulation reference signal port information adopted by the signal; the quasi-common reference signal resource information corresponding to the signal; the structure information corresponding to the signal, the structure including the CP length of the starting symbol of the time unit and / or whether the starting position of the time unit includes a synchronization signal, and / or the CP length of the last symbol of the time unit. The signal is a transmission signal corresponding to the second type of packet information, for example Figure 24d The sending signal is the data information of the receiving end in the data domain corresponding to the signaling information, or the sending signal is the control channel corresponding to the signaling information, or the sending signal is the reference signal corresponding to the signaling information, and the reference signal can be a measurement reference signal or a data demodulation reference signal.

[0421] The grouping method includes one or more of the following methods: grouping according to the corresponding receiving resources; grouping according to the corresponding channel quality of the resources; grouping according to the recommended multiplexing method; grouping according to the TA parameter; grouping according to the CP length; grouping according to the spatial division multiplexing method; grouping according to the quasi-co-location relationship; and grouping according to the uplink measurement reference signal sent by the receiving end. The receiving resources include one or more of the following resources: receiving beam, receiving antenna, receiving port, receiving precoding matrix, receiving time, receiving frequency domain, receiving sector, and receiving sequence.

[0422] For example, the receiving end feeds back packets 0, 1, and 2. Different packets correspond to different receiving modes, and the receiving end can only generate a receiving mode corresponding to one packet at each moment. Different packets correspond to different receiving modes. At this time, the packet information indicates that the packet index is 0, and the receiving end will use the receiving mode corresponding to packet 0 to receive the data.

[0423] For example, if the receiving end feeds back packets 0, 1, and 2, each corresponding to a different reception mode, and the receiving end can generate reception modes corresponding to all packets at any given moment, then the receiving end will use the reception mode corresponding to packet 1 to receive the data. If the packet information indicates the packet index set {1, 2}, the receiving end will use the reception mode corresponding to packets {1, 2} to receive the data. For example, if packets 1 and 2 correspond to receive antennas 1 and 2, the receiving end will use receive antennas 1 and 2 to receive the data.

[0424] For example, the receiving end feeds back the group information shown in Table 7. Different groups correspond to different signal arrival areas, such asFigure 22b As shown, in the transmission phase, the packet information indicates that the packet index is 0, at this time, the sending end and the receiving end agree that the CP used is CP1. In the transmission phase, the packet information indicates that the packet index set is {0, 3}, at this time, the sending end and the receiving end agree that the CP used is 4CP1, that is, at this time, the receiving end obtains the CP length of the signal according to the packet information.

[0425] After the sending end sends the second type of packet information to the receiving end, the receiving end learns the quasi co-location reference signal corresponding to the signal according to the packet index information, wherein the signal can be a demodulation reference signal or a measurement reference signal. First, the correspondence between the signal and the packet index needs to be established, and this correspondence is agreed by both parties, for example, one packet index corresponds to one signal group, wherein all signals in the one signal group can use the resource acquisition QCL characteristics included in the corresponding packet index previously fed back by the receiving end. For example, the first type of packet index 0 previously fed back by the receiving end includes {measurement reference signal 0, measurement reference signal 1}, and the sending end indicates the packet index 0 in the second type of packet information, and the receiving end can use {measurement reference signal 0, measurement reference signal 1} to obtain the QCL information of all signals in the signal group corresponding to the packet index 0. Specifically, the receiving end can use {measurement reference signal 0, measurement reference signal 1} to obtain the QCL information of all demodulation reference signals in the demodulation reference signal group corresponding to the packet index 0, and / or the receiving end can use {measurement reference signal 0, measurement reference signal 1} to obtain the QCL information of all measurement reference signals in the measurement reference signal group (this measurement reference signal is the measurement reference signal corresponding to the second type of packet indication information) corresponding to the packet index 0.

[0426] After the sending end sends the second type of packet information to the receiving end, the receiving end learns the demodulation reference signal port information according to the packet index information, wherein the demodulation reference signal port information includes the number of demodulation reference ports and the demodulation reference ports, for example, one packet index corresponds to one demodulation reference signal group, and this correspondence is agreed by both parties, and all demodulation reference signals in one demodulation reference signal group are quasi co-located and can jointly perform large-scale information of the demodulation reference signal. The way of obtaining other sending parameters and / or receiving parameters according to the packet information is as shown above, and will not be described again. Further, if there are multiple packet modes, each packet mode corresponds to different packet indication information, at this time, the packet information can further notify the packet mode, so that the receiving end obtains the sending parameters and / or receiving parameters according to the correspondence between the packet index and the sending parameters and / or receiving parameters under the corresponding packet mode.

[0427] Figure 24dThe middle packet information is informed and acquired by dynamic signaling, and the application does not exclude that the packet information is informed by semi-static high layer signaling or by system message. Or the signaling informed and the combination of the agreed rules. Figure 24d In the middle, the position of the packet information in the control domain in the control domain is only an example, and the application does not exclude other occupation modes. The occupation of the data signal of the receiving end in the data domain is only an example, and other occupation modes are not excluded.

[0428] In the above embodiment, the correspondence between the packet index and the sending parameter, and / or the receiving parameter is obtained from the feedback information fed back by the receiving end. The feedback information includes the first type of packet indication information, and the sending end and the receiving end obtain the second type of packet indication information according to the first type of packet indication information according to the agreed rules. The embodiment also does not exclude that the correspondence between the packet index and the sending parameter, and / or the receiving parameter is agreed in advance. Specifically, the correspondence between the packet index and the sending parameter, and / or the correspondence between the packet index and the receiving parameter, the first way is to obtain the first type of packet information fed back by the receiving end. The second way is that the sending end sends the correspondence to the receiving end. The third way is that the sending end obtains it according to the uplink measurement reference signal sent by the receiving end. Specifically, in the third embodiment, the sending end (such as a base station) groups the uplink measurement reference signal sent by the terminal according to the uplink measurement reference signal, and indicates the packet index indication in the second type of packet indication information, such as the uplink measurement reference signal index. For example, the receiving end (such as a terminal) sends Nup uplink measurement reference signals (such as SRS or other equivalent names), and N is an integer greater than or equal to 1. The sending end (such as a base station) sends the second type of packet indication information to the terminal, wherein the packet indication information includes Mup measurement reference signal index information in the Nup uplink measurement reference signals, and Mup is an integer less than or equal to Nup. The terminal obtains the following information according to the Mup measurement reference signal index information: the receiving mode of receiving the signal sent by the base station, the sending mode of sending the signal to the base station, such as the receiving mode of receiving the signal sent by the base station according to the sending mode of the corresponding uplink measurement reference signal (such as using uplink-downlink reciprocity). The uplink measurement reference signal includes one of the following reference signals: uplink demodulation reference signal, SRS signal, uplink CSI-RS, or other equivalent names. In summary, the uplink measurement reference signal is the channel measurement reference signal sent by the terminal to the base station.

[0429] In another implementation of this embodiment, the second type of grouping indication information sent by the transmitting end includes resource information included in the group. The resource information is reference signal resource information. The reference signal includes one of the following types: a demodulation reference signal and a measurement reference signal resource. Preferably, the resources in the same group have the same channel characteristics and / or quasi-co-location information.

[0430] In one implementation of this embodiment, the transmitting end indicates a group index, and the receiving end obtains a sounding reference signal-related configuration based on the group index, such as information such as the port number and number of ports for the sounding reference signal. Alternatively, the transmitting end notifies the receiving end of the group index and resource information included in the group, so that the receiving end can perform further beam training.

[0431] The aforementioned QCL information or quasi-co-location information may also be referred to as channel characteristic information, or other equivalent terms, where the channel characteristic information or QCL information includes at least one of the following information about the reference signal: Doppler spread, Doppler frequency shift, average gain, average delay, average angular spread, and angle of arrival. Alternatively, the two resources are quasi-co-located, meaning that the large-scale information obtained from one resource can be used to provide the large-scale information of the other resource, where the large-scale information includes at least one of the following information: Doppler spread, Doppler frequency shift, average gain, average delay, average angular spread, and angle of arrival.

[0432] In another implementation of this embodiment, the second type of group indication information is not notified through signaling, but multiplexed with other signals, such as through a sequence, for example, implicitly notified through a reference signal port or scrambling. Specific embodiment 14

[0434] This embodiment is similar to specific embodiment 13, except that in specific embodiment 13, the terminal obtains the sending parameters and / or receiving parameters corresponding to the signal sent by the base station based on the second type of grouping information sent by the base station. In this embodiment, the terminal obtains the sending parameters of the uplink signal sent by the terminal to the base station, and / or the receiving parameters and / or sending parameters of the signal sent by the base station based on the second type of grouping information sent by the base station.

[0435] In a first implementation of this embodiment, a transmitting end (e.g., a base station) groups downlink transmit beams according to an uplink sounding reference signal sent by a terminal, and indicates a grouping index indication, such as an uplink sounding reference signal index, in second-type grouping indication information. Specifically, for example, a receiving end (e.g., a terminal) sends Nup uplink sounding reference signals (e.g., SRS, or other equivalent names), where N is an integer greater than or equal to 1. The transmitting end (e.g., a base station) sends second-type grouping indication information to the terminal, wherein the grouping indication information includes Mup sounding reference signal index information among the Nup uplink sounding reference signals, where Mup is an integer less than or equal to Nup. The terminal obtains at least one of the following information based on the Mup sounding reference signal index information: a receiving mode for receiving a signal sent by the base station, a sending mode for sending a signal to the base station, such as receiving a signal sent by the base station according to a receiving mode obtained according to a sending mode corresponding to the uplink sounding reference signal (e.g., utilizing uplink and downlink reciprocity), and sending a signal to the base station using a sending mode corresponding to the uplink sounding reference signal. The uplink measurement reference signal includes one of the following reference signals: an uplink demodulation reference signal, an SRS signal, an uplink CSI-RS, or other equivalent names. In short, the uplink measurement reference signal is a channel measurement reference signal sent by the terminal to the base station.

[0436] In the second implementation of this embodiment, the terminal groups the measurement reference signal sent by the base station according to the receiving resource, obtains the N first-category grouping information, and feeds the first-category grouping information back to the base station. Based on uplink and downlink reciprocity, the base station considers that the terminal's downlink optimal receiving beam is the uplink optimal transmitting beam, and / or the base station's optimal transmitting beam corresponding to the terminal's downlink is the base station's optimal receiving beam for receiving the signal sent by the terminal in the uplink. Thus, the grouping index information in the second-category grouping indication information informs the terminal of at least one of the following information: the receiving mode for receiving the signal sent by the base station (the receiving mode corresponding to the grouping index receives the signal sent by the base station), and the transmitting mode for sending the signal to the base station (the receiving mode corresponding to the grouping index utilizes uplink and downlink reciprocity to adopt the corresponding transmitting mode to send the uplink signal to the base station).

[0437] In this embodiment, the signal sent to the base station includes: a data channel signal, a control channel signal, a reference signal, such as a measurement reference signal (such as SRS), a demodulation reference signal, a resource request reference signal, etc.

[0438] The receiving mode or receiving resource in the present invention includes one or more of the following modes: receiving beam, receiving antenna, receiving port, receiving precoding matrix, receiving time, receiving frequency domain, receiving sector, and receiving sequence. The sending mode or sending resource includes one or more of the following modes: sending beam, sending antenna, sending port, sending precoding matrix, sending time, sending frequency domain, sending sector, and sending sequence. The receiving mode is receiving time, which means that the transmitting end repeatedly sends the same sending beam resource multiple times, so that the receiving end can perform receiving beam search. At this time, different receiving beams correspond to the index in the number of repetitions. Specifically, Figure 24f As shown, the transmitter repeats the transmission twice. The first scanning unit corresponds to the first receiving mode, and the second scanning unit corresponds to the second receiving mode. The receiver feeds back a first-class group for each scanning unit. Or the first-class group notifies which scanning unit it is. Or in this case, the logical beam number considers the same transmission beam repeated twice as different logical numbers. In this case, the receiver only needs to group the logical beams, for example, Figure 24f The 2N time domain units in 24g form 2N*x1 logical beams, or the 2N time domain units in 24g form 2N*x1 logical beams, where x1 is the number of beam ports in each time domain unit. The transmitter periodically sends a measurement reference signal, and the receiver switches receive beams at different intervals. The logical beams are numbered within a scanning unit, and the receiver groups them according to the receive beams.

[0439] In the above embodiment, the data in the transmission phase after the feedback includes service data and / or reference signals.

[0440] In the above embodiment, it can be agreed that each first-category group contains only one resource.

[0441] In the above embodiment, the measurement reference signal may also be BRS (beam reference signal), BRRS (beam refinement reference signal), or other equivalent names. In short, it is a reference signal for measuring the channel state, where the channel state includes the beam state. The specific name does not constitute a limitation to this patent.

[0442] Those skilled in the art can clearly understand that the method according to the above-mentioned embodiments can be realized by means of software and necessary general hardware platforms, and of course, can also be realized by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk) and includes a plurality of instructions for causing a terminal device (which can be a mobile phone, a computer, a server, or a network device) to execute the method described in the various embodiments of the present application.

[0443] In the present embodiment, a feedback device of grouping indication information, an acquisition device of signal parameters, a signal sending device, and a sending device of signal parameters are also provided, which are used to implement the above-mentioned embodiments and preferred embodiments, and will not be described again. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation of hardware, or a combination of software and hardware, is also possible and contemplated.

[0444] Figure 25 is a structural block diagram of a feedback device of grouping indication information according to an embodiment of the present application, as shown in Figure 25 The device includes a first determination module 252 and a first sending module 254, which will be described below:

[0445] The first determination module 252 determines M resources from the candidate resource set, and divides the M resources into N first-type resource groups, wherein M is an integer greater than or equal to 1, and N is a positive integer less than or equal to M; the first sending module 254 feeds back, to the first communication node, indication information for indicating the M resources and first-type grouping indication information for dividing the M resources into N first-type resource groups.

[0446] In an optional embodiment, the first determination module 252 can determine the M resources from the candidate resource set by the following method: determining a candidate resource set, wherein the candidate resource set includes Q second-type resource groups, and Q is an integer greater than or equal to 1; receiving a sending signal sent on the candidate resource set; and determining the M resources from the candidate resource set according to the received sending signal.

[0447] In an optional embodiment, the Q second-category resource groups in the candidate resource set can be divided according to at least one of the following resource types: beam resources, antenna resources, port resources, frequency domain resources, transmission sequence resources, and time domain resources. In this embodiment, different beam resources may be different second-category resource groups; different port resources may be different second-category resource groups; different time / frequency resources may be different second-category resource groups; different sequence resources may be different second-category resource groups; different beams and port resources may be different second-category resource groups; and different beams and time / frequency resources may be different second-category resource groups. Optionally, the uses of the above-mentioned resources include at least one of the following: receiving / transmitting synchronization signals, receiving / transmitting data signals, receiving / transmitting control signals, and receiving / transmitting pilot signals.

[0448] In an optional embodiment, the first determination module 252 may determine M resources from the candidate resource set in the following manner: determine M resources from the candidate resource set according to the channel quality and / or signal quality corresponding to the resources in the candidate resource set.

[0449] In an optional embodiment, at least one of the following is included: resources in the same first-category resource group belong to one or more second-category resource groups, for example, a channel state information reference symbol resource (Channel State Information-Reference Signal resource, abbreviated as CSI-RS) corresponds to a second-category resource group, multiple ports in a CSI-RS resource correspond to resources included in a second-category resource group, and resources in the same first-category resource group can be composed of ports in one or more CSI-RS resources. Preferably, at this time, different CSI-RS resources correspond to different sending nodes, and different ports in the same CSI-RS resource can correspond to different sending beams of the sending node. Resources in the same second-category resource group belong to one or more first-category resource groups. For example, assuming that the transmission beams {1, 2, 3, 4, 5} constitute a candidate resource set, each transmission beam is a second-category resource group. When finally divided into two first-category resource groups, the transmission beams {1, 2, 3} can be one first-category resource group and the transmission beams {1, 4, 5} can be another first-category resource group. Then, transmission beam 1 can correspond to multiple first-category resource groups; the intersection of different resource groups in the above N first-category resource groups may not be an empty set.

[0450] In an optional embodiment, the first sending module 254 may divide the M resources into N first-category resource groups in at least one of the following ways: dividing the M resources into N first-category resource groups based on the receiving resources corresponding to the M resources; dividing the M resources into N first-category resource groups based on the signal quality on the M resources or the channel quality corresponding to the M resources; dividing the M resources into N first-category resource groups based on a predetermined multiplexing method; dividing the M resources into N first-category resource groups based on a timing advance (TA) parameter; dividing the M resources into N first-category resource groups based on a cyclic prefix (CP) length; dividing the M resources into N first-category resource groups based on a quasi-co-location relationship; dividing the M resources into N first-category resource groups based on configuration information for grouping; and dividing the M resources into the N first-category resource groups based on channel characteristics. In this embodiment, the predetermined multiplexing method may include a recommended multiplexing method, a general multiplexing method, or a space division multiplexing method.

[0451] In an optional embodiment, the above-mentioned first sending module 254 can divide M resources into N first-class resource groups according to a predetermined multiplexing method in the following manner: divide M resources into N first-class resource groups according to a spatial division multiplexing method, wherein resources that cannot be spatially multiplexed are divided into the same first-class resource group, and resources that can be spatially multiplexed are divided into different first-class resource groups, and the number of groups of the first-class resource groups is greater than or equal to the maximum number of layers of spatial division multiplexing; or, resources that can be spatially multiplexed are divided into the same first-class resource group, and resources that cannot be spatially multiplexed are divided into different first-class resource groups, and the number of layers of spatial division multiplexing of resources in the same first-class resource group is less than or equal to the number of resources contained in the first-class resource group.

[0452] In an optional embodiment, it also includes at least one of the following: one or more types of receiving resources are the same in the same first-category resource group, or the difference between one or more types of receiving resources in the same first-category resource group is less than a predetermined threshold value (for example, the correlation of the receiving sequence is less than the agreed threshold, and / or the correlation of the receiving beam is less than the agreed threshold), wherein the above-mentioned receiving resource types include at least one of the following: receiving antenna resources, receiving port resources, receiving weight resources, receiving sector resources, receiving sequence resources, receiving time domain resources, receiving frequency domain resources, and receiving beam resources; the difference in channel quality corresponding to resources in the same first-category resource group is less than or equal to threshold R1, and the channel quality corresponding to resources on different first-category resource groups is less than or equal to threshold R1. The difference in quality is greater than the threshold R2, where R1 or R2 is pre-agreed with the first communication node (may be pre-agreed by the first communication node and the second communication node), or is configured by the first communication node signaling (wherein, R1 and R2 may be the same); the difference in received signal quality corresponding to resources in the same first-class resource group is less than or equal to the threshold r1, and the difference in received signal quality corresponding to resources on different first-class resource groups is greater than the threshold r2, where r1 or r2 is pre-agreed with the first communication node, or is configured by the first communication node signaling (wherein, r1 and r2 may be the same); the set of multiplexing modes for sending signals on resources in the same first-class resource group is set A, and the set of multiplexing modes for sending signals on resources in different first-class resource groups is set A. The set of multiplexing modes used when sending signals on resources is set B, wherein the above-mentioned set B is a true subset of set A, or set A is a true subset of set B (wherein set A and set B are different sets); the difference in corresponding TA parameters when sending signals on resources within the same first-class resource group is less than or equal to threshold T1, and the difference in corresponding TA parameters when sending signals on resources of different first-class resource groups is greater than threshold T2, wherein T1 or T2 is pre-agreed with the first communication node, or configured by signaling of the first communication node, or determined according to the configuration of the CP (wherein T1 and T2 may be the same); the CP length used when sending signals on resources within the same first-class resource group is less than or equal to t1, and the CP length used when sending signals on resources of different first-class resource groups is less than or equal to t1. The CP length used when sending signals on the resource is greater than t2, where t1 or t2 is pre-agreed with the first communication node or configured by signaling of the first communication node (wherein t1 and t2 may be the same); resources in different first-class resource groups correspond to different CP lengths; resources in the same first-class resource group correspond to the same CP length; transmitted signals corresponding to resources in the same first-class resource group are not allowed to be spatially multiplexed; transmitted signals corresponding to resources in different first-class resource groups are allowed to be spatially multiplexed; the number of the above-mentioned first-class resource groups is equal to the maximum number of layers that can be sent by spatial division multiplexing; the transmission of the transmitted signals corresponding to the resources in the above-mentioned first-class resource groups is quasi-co-located; the channel characteristics corresponding to the resources in the above-mentioned first-class resource groups are the same;The channel characteristics of a resource in the first resource group can be obtained from the channel characteristics of other resources in the group.

[0453] In an optional embodiment, it includes at least one of the following features: the above-mentioned configuration information includes at least one of the following: grouping restriction indication information, used to determine the threshold parameters of the grouping, used to determine the parameters of the grouping rules, wherein the configuration information can be configured by the first communication node signaling, or pre-agreed with the first communication node; the sending signals corresponding to the resources within the same first-class resource group are allowed to be spatially multiplexed; the sending signals corresponding to the resources within different first-class resource groups are not allowed to be spatially multiplexed; the number of layers of spatially multiplexed sending signals corresponding to the resources within the same first-class resource group is less than or equal to the number of resources contained in the group.

[0454] In an optional embodiment, the above-mentioned group restriction indication information includes: the number of resources contained in the same first-class resource group does not exceed a, and the number N of first-class resource groups does not exceed b, where a and b are both natural numbers greater than or equal to 1; or, the number of resources contained in the same first-class resource group is fixed to a, and the number N of first-class resource groups is fixed to b, where a and b are both natural numbers greater than or equal to 1.

[0455] In an optional embodiment, the above-mentioned device also includes an agreement module, which is used to agree with the first communication node that the first type resource group includes at least one of the following characteristics: the same first type resource group corresponds to the same set of timing advance TA parameters; the same first type resource group corresponds to the same set of cyclic prefix CP parameters; the corresponding cyclic prefix CP length when different resources are sent simultaneously is determined according to the maximum absolute value of the resource group index difference of the first type resource group corresponding to the resource; different first type resource groups correspond to different cyclic prefix CP parameters; the receiving resources corresponding to the same first type resource group are the same; different receiving resources corresponding to different first type resource groups are generated by time division (which can be generated by the second communication node through time division). Different receiving resources corresponding to different first-class resource groups are generated in a divided manner, wherein the above-mentioned second communication node can be an operating entity that determines M resources and feeds back the indication information of the M resources and the indication information of dividing the M resources into N first-class groups to the first communication node); at least one type of channel or signal state parameter corresponding to the same first-class resource group is the same; the resources within the same first-class resource group are allowed to be frequency-division multiplexing and / or space-division multiplexing and / or time-division multiplexing (wherein, the same first-class resource group preferably adopts time-division multiplexing); the resources of different first-class resource groups cannot be frequency-division or space-division multiplexing, but can only be time-division multiplexing; the resources within the same first-class resource group correspond to the same index indication parameter.

[0456] In an optional embodiment, the above-mentioned channel or signal state parameters are the same, including at least one of the following: the same rank indication (RI), the same reference signal received power RSRP, the same channel quality indication (CQI), the same received signal-to-noise ratio (SNR), the same precoding matrix indication (PMI), and the same channel reference signal (CRI); and / or, the same index corresponding to the resources in the same first-category resource group includes at least one of the following: receiving beam index, receiving sector index, receiving antenna index, receiving sequence index, receiving port index, and receiving beam combination index.

[0457] In an optional embodiment, the agreement module is further used to agree with the first communication node on the following feature: having the ability to simultaneously generate receiving modes corresponding to all first-category resource groups.

[0458] In an optional embodiment, the above-mentioned agreement module is also used to agree with the first communication node that the first-class resource group includes one of the following characteristics: resources within the same first-class resource group are not allowed to be space-division multiplexing, resources within different first-class resource groups are allowed to be space-division multiplexing, and the maximum number of layers of space-division multiplexing is equal to the number of groups of first-class resource groups; resources within the same first-class resource group are allowed to be space-division multiplexing, resources within different first-class resource groups are not allowed to be space-division multiplexing, and the number of layers of space-division multiplexing of resources within the same first-class resource group is less than or equal to the number of resources contained in the first-class resource group.

[0459] In an optional embodiment, the following at least one is included: in the first-type grouping indication information, the resources in each group are arranged in order of the reception quality of the resources; the first-type grouping indication information includes at least one of the following information: grouping number information, resource information included in each group, resource number information included in each group, grouping mode indication information, grouping index information, and common parameter information corresponding to each group; the first-type grouping indication information includes multiple levels of grouping; the first-type grouping indication information includes two levels of grouping, and a first-level group includes multiple second-level groups, wherein the second communication node that divides the M resources into N first-type resource groups has the capability of simultaneously generating reception resources corresponding to different first-level groups or all first-level groups, and time-divisionally generating different reception resources corresponding to multiple second-level groups included in the same first-level group, or the capability of time-divisionally generating reception resources corresponding to resources in different first-level groups and simultaneously generating reception resources corresponding to different second-level groups or all second-level groups included in the same first-level group.

[0460] In an optional embodiment, the following at least one is included: the grouping number information has a mapping relationship with the transmission indication information and resource information used by the first-type grouping indication information; each first-type group includes resource information, which includes at least one of the following information: index information of the resources in the candidate resource set, and channel quality indication (CQI) information corresponding to each resource; the common parameter corresponding to each first-type group includes at least one of the following parameters: cyclic prefix (CP) length information corresponding to each group, precoding matrix indication (PMI) information corresponding to each group, rank indication (RI) information corresponding to each group, channel quality indication (CQI) information corresponding to each group, timing advance (TA) parameter information corresponding to each group, quasi-co-location (QCL) parameter information corresponding to each group, and reception resource information corresponding to each group; the resource index set included in the jth group in the first-type grouping indication information is {b i,j -1,i=0,1,...,Lj-1}, where 1≤b i,j ≤TBN, b i,j <b i+1,j , and the resource index set is represented by bits, , and the value of the bit is wherein TBN is the total number of resources included in the candidate resource set, 0≤j≤N-1, N is the number of groups of the first-type resource groups, Lj is the number of resources included in the jth group, represents the number of different combinations of selecting B numbers from A numbers.

[0461] In an optional embodiment, the above-mentioned N value satisfies one of the following characteristics: the above-mentioned N value is a first agreed value; the above-mentioned N value is less than or equal to N_max, wherein the N_max is a second agreed value (which can be a value agreed upon by the first communication node and the second communication node).

[0462] In an optional embodiment, the apparatus further includes a feedback module configured to feed back to the first communication node the maximum number of different receiving resources corresponding to different first-category resource groups that can be generated simultaneously.

[0463] In an optional embodiment, the uses of the resources in the above-mentioned candidate resource set include at least one of the following: receiving and / or sending synchronization signals; receiving and / or sending data signals; receiving and / or sending control signals; receiving and / or sending pilot signals.

[0464] In an optional embodiment, the number of resources included in different first-category groups is the same or different.

[0465] Figure 26 is a structural block diagram of a device for obtaining group indication information according to an embodiment of the present invention. Figure 26 As shown, the device includes a first acquisition module 262, which is described below:

[0466] The first acquisition module 262 is used to obtain second-category group indication information, wherein the second-category group indication information includes at least one of the following information: group index set information, group mode indication information, and resource information included in the group, wherein the group index set includes at least one group index.

[0467] In an optional embodiment, the apparatus further includes a first processing module configured to determine, based on the second type of grouping indication information, a sending parameter and / or a receiving parameter of a signal corresponding to the second type of grouping indication information.

[0468] In an optional embodiment, the corresponding signal includes at least one of the following signals: a control channel signal, a data channel signal, and a reference signal.

[0469] In an optional embodiment, the above-mentioned first acquisition module 262 can obtain the second-class group indication information in at least one of the following ways: obtaining the second-class group indication information according to the rules agreed with the first communication node; receiving semi-static signaling, and obtaining the second-class group indication information from the semi-static signaling; receiving dynamic signaling, and obtaining the second-class group indication information from the dynamic signaling; receiving a system message, and obtaining the second-class group indication information from the system message.

[0470] In an optional embodiment, the above-mentioned first acquisition module 262 can determine the sending parameters and / or receiving parameters of the signal corresponding to the second-category group indication information in the following manner: determine a correspondence relationship pre-agreed with the first communication node, wherein the correspondence relationship is a correspondence relationship between the second-category group indication information and the sending parameters and / or receiving parameters; and determine the above-mentioned sending parameters and / or receiving parameters according to the above-mentioned second-category group indication information and with reference to the above-mentioned correspondence relationship.

[0471] In an optional embodiment, the correspondence between the second type of grouping indication information and the sending parameters and / or receiving parameters is included in the first type of grouping indication information fed back to the first communication node.

[0472] In an optional embodiment, the transmission parameters include at least one of the following: the MCS set corresponding to the signal, the multiplexing mode used by the signal, the cyclic prefix CP length corresponding to the signal, the number of spatial division multiplexing layers used by the signal, the demodulation reference signal port information used by the signal, the quasi-common reference signal resource information corresponding to the signal, and the structure information corresponding to the signal; wherein the structure information includes the CP length information of the starting symbol of the time unit and / or whether the starting position of the time unit includes the synchronization signal information and / or the CP length of the last symbol of the time unit; the channel characteristic reference signal corresponding to the signal, the transmission mode corresponding to the signal; and / or the reception parameters include the reception resources used to receive the signal. Optionally, the reception resources include at least one of the following: reception port, reception antenna, reception beam, reception precoding weight, reception time, reception frequency domain, reception sector, and reception sequence resources.

[0473] In an optional embodiment, the grouping method indicated by the above-mentioned second type of grouping indication information includes at least one of the following methods: grouping according to the receiving resources corresponding to the resources in the above-mentioned candidate resource set, grouping according to the channel quality corresponding to the resources in the candidate resource set, grouping resources according to a predetermined multiplexing method, grouping according to the timing advance TA parameter, grouping according to the cyclic prefix CP length, grouping according to the space division multiplexing method, grouping according to the quasi-co-location relationship, grouping according to the sent measurement reference signal, and grouping according to the channel characteristics.

[0474] In an optional embodiment, the above-mentioned receiving resources include at least one of the following resources: receiving beam, receiving antenna, receiving port, receiving precoding matrix, receiving time, receiving frequency domain, receiving sector, and receiving sequence.

[0475] In an optional embodiment, the resource information included in the above group includes resource information of a reference signal, wherein the reference signal includes at least one of the following types: a demodulation reference signal and a measurement reference signal resource.

[0476] In an optional embodiment, the channel characteristics and / or quasi-co-location information of resources in the same group are the same.

[0477] In an optional implementation, there is a correspondence between the above-mentioned grouping index and the port information of the sounding reference signal sent by the second communication node, where the second communication node is the communication node that obtains the second grouping indication information.

[0478] Figure 27 is a structural block diagram of a signal receiving device according to an embodiment of the present invention. Figure 27 As shown, the device includes a second acquisition module 272 and a first receiving module 274. The device is described below:

[0479] The second acquisition module 272 is configured to acquire the third type of grouping indication information; the first receiving module 274 is connected to the second acquisition module 272 and configured to receive a demodulation reference signal and / or a control channel according to the third type of grouping indication information.

[0480] In an optional embodiment, the third type of group indication information includes at least one of the following: group number information, resource information included in each group, resource number information included in each group, grouping mode indication information, and grouping index information.

[0481] In an optional embodiment, the second acquisition module 272 may acquire the third-category group indication information in at least one of the following ways: acquiring feedback information based on a signal sent by the first communication node, the feedback information including the third-category group indication information, wherein the second communication node may receive the signal sent by the first communication node to acquire the feedback information and feed the feedback information back to the first communication node; acquiring the third-category group indication information based on a rule agreed upon with the first communication node; receiving signaling information, the signaling information including the third-category group indication information. The received signaling information may include receiving the third-category group indication information sent through semi-static signaling, receiving the third-category group indication information sent through dynamic signaling, or receiving the third-category group indication information sent through a system message.

[0482] In an optional embodiment, the above-mentioned first receiving module 274 can receive the above-mentioned demodulation reference signal and / or control channel in the following manner: receiving the demodulation reference signal and / or control channel on N1 resources in time division according to the third-category grouping indication information, where N1=x×N, or N1 is less than or equal to N, N1 is an integer greater than 0, N is the third-category group number information contained in the above-mentioned third-category grouping indication information, and x is an integer greater than or equal to 1.

[0483] In an optional embodiment, the demodulation reference signal and / or the control channel are received on the receiving resources in the receiving resource set on the N1 transmission demodulation reference signal resources; one or more receiving resources are selected from the receiving resource set according to a rule, and data, and / or control signal, and / or reference signal after the demodulation reference signal are received according to the selected receiving resources.

[0484] In an optional embodiment, the apparatus further comprises a second processing module configured to obtain the receiving resource set by at least one of the following: the receiving resource set is composed of receiving resources corresponding to all groups indicated by the third type of group indication information; the receiving resource set is composed of receiving resources corresponding to N2 group indexes agreed with the first communication node, wherein N2 is an integer greater than or equal to 1; and the receiving resource set is determined by acquiring signaling indication information.

[0485] In an optional embodiment, the receiving resource comprises at least one of the following: a receiving beam, a receiving antenna, a receiving port, a receiving precoding matrix, a receiving time, a receiving frequency domain, a receiving sector, and a receiving sequence.

[0486] In an optional embodiment, the second processing module is further configured to acquire the x parameter and / or the N1 parameter before receiving the demodulation reference signal and / or the control channel on the N1 time-division resources according to the third type of group indication information.

[0487] In an optional embodiment, the second processing module can acquire the x and / or N1 by at least one of the following: acquiring according to an agreement with the first communication node; acquiring by a semi-static signaling configuration; and acquiring by a dynamic signaling configuration.

[0488] In an optional embodiment, the first receiving module 274 can receive the demodulation reference signal and / or the control channel by at least one of the following: receiving the demodulation reference signal and / or the control channel according to the third type of indication information on an agreed time unit, and receiving the demodulation reference signal and / or the control channel on only one time-division resource on a non-agreed time unit.

[0489] Figure 28 is a structural block diagram of a receiving apparatus of feedback information according to an embodiment of the present application, as shown in Figure 28 The apparatus comprises a second receiving module 282 and a second sending module 284, and the apparatus is described as follows:

[0490] A second receiving module 282 is used to receive feedback information from a second communication node, wherein the feedback information includes indication information for indicating the M resources selected by the second communication node and first-class grouping indication information for indicating the second communication node to divide the M resources into N first-class resource groups; a second sending module 284 is connected to the second receiving module 282, and is used to perform resource scheduling according to the feedback information, and / or to perform signal sending according to the feedback information; wherein, N and M are both integers, N is less than or equal to M, and the M resources are selected from a set of candidate resources.

[0491] In an optional embodiment, the above-mentioned device also includes a third processing module, which is used to perform at least one of the following operations before receiving feedback information from the second communication node: sending a signal corresponding to all or part of the resources in the resource set to the second communication node; sending at least one of the following information for determining the first-category resource grouping indication information to the second communication node: grouping restriction indication information, parameters for determining grouping rules, threshold parameters for determining grouping, configuration indication information of the above-mentioned candidate resource set, and grouping method indication information.

[0492] The number of resources contained in the same first-class resource group does not exceed a, and the number N of first-class resource groups does not exceed b; or the number of resources contained in the same first-class resource group is fixed to a, and the number N of first-class resource groups is fixed to b, where a and b are both natural numbers greater than or equal to 1.

[0493] In an optional embodiment, the grouping method indicated by the above-mentioned first type of grouping indication information includes at least one of the following: grouping according to the receiving resources corresponding to the resources; grouping according to the channel quality corresponding to the resources; grouping according to a predetermined multiplexing method; grouping according to the timing advance TA parameter; grouping according to the cyclic prefix CP length; grouping according to the space division multiplexing method; grouping according to the quasi-co-location relationship.

[0494] In an optional embodiment, grouping according to a predetermined multiplexing mode includes grouping according to a space division multiplexing mode.

[0495] In an optional embodiment, the above-mentioned receiving resources include at least one of the following resources: receiving beam, receiving antenna, receiving port, receiving precoding matrix, receiving time, receiving frequency domain, receiving sector, and receiving sequence.

[0496] In an optional embodiment, the above-mentioned first-class resource group includes at least one of the following: the timing advance TA values ​​corresponding to the same first-class resource group are the same; different first-class resource groups correspond to different timing advance TA values; resources of the same first-class resource group are allowed to be scheduled within the same time unit; some or all resources in the same first-class resource group are allowed to be scheduled within the same time unit; different first-class resource groups are scheduled in different time units and cannot be scheduled in the same time unit; the multiplexing method of resources in the same first-class resource group is set A, and the multiplexing method of resources in different first-class resource groups is set B, wherein set B is a true subset of set A, or set A is a true subset of set B; resources in the same first-class resource group cannot be spatially multiplexed in the same time unit, and resources in different first-class resource groups are allowed to be spatially multiplexed in the same time unit. Space division multiplexing, wherein the number of layers of space division multiplexing is less than or equal to the number of first-category resource groups; when resources in the same first-category resource group are scheduled simultaneously in the same time unit, or when resources in the same first-category resource group are switched in different time units, a first cyclic prefix CP length is used; when resources in different first-category resource groups are scheduled in the same time unit, a second CP length is used; when the scheduled resources are switched between different first-category resource groups or first-category resource combinations, the starting orthogonal frequency division multiplexing OFDM symbol of the switching adopts a third CP length, and / or the starting position of the switching has a synchronization signal for the receiving timing of the second communication node, and / or the last OFDM symbol before the switching adopts the third CP length; the quasi-co-location of the same first-category resource group is the same, and all resources in the same first-category resource group share a quasi-co-location reference signal.

[0497] In an optional embodiment, resources in the same first-class resource group are allowed to be spatially multiplexed in the same time unit, wherein the number of layers of spatial multiplexing is less than or equal to the number of resources included in the first-class resource group, and resources in different first-class resource groups cannot be spatially multiplexed in the same time unit; and / or, the corresponding CP length of resources in different first-class resource groups scheduled in the same time unit is obtained according to the difference in the index of the resource group where the resources are located.

[0498] In an optional embodiment, the third CP length is greater than the first CP length and the second CP length.

[0499] Figure 29 is a structural block diagram of a device for notifying group indication information according to an embodiment of the present invention. Figure 29 As shown, the device includes a second determining module 292 and a third sending module 294. The device is described below:

[0500] The second determination module 292 is used to determine the second type of group indication information; the third sending module 194 is connected to the above-mentioned second determination module 292, and is used to inform the second communication node of the above-mentioned second type of group indication information, wherein the second type of group indication information includes at least one of the following information: group index set information, group mode indication information, and resource information included in the group, wherein the second type of group index set includes at least one group index.

[0501] In an optional embodiment, the above-mentioned third sending module 194 can inform the second communication node of the second type of group indication information in at least one of the following ways: agreeing on the above-mentioned second type of group indication information with the second communication node; sending the second type of group indication information to the second communication node through semi-static signaling; sending the second type of group indication information to the second communication node through dynamic signaling; sending the second type of group indication information to the second communication node through a system message.

[0502] In an optional embodiment, the second type of grouping indication information is used by the second communication node to determine the sending parameters and / or receiving parameters of the signal corresponding to the second type of grouping indication information.

[0503] In an optional embodiment, the transmission parameters include at least one of the following: the MCS set corresponding to the signal, the multiplexing mode used by the signal, the cyclic prefix (CP) length corresponding to the signal, the number of spatial division multiplexing layers used by the signal, the demodulation reference signal port information used by the signal, the quasi-co-reference signal resource information corresponding to the signal, the structure information corresponding to the signal, the channel characteristic reference signal resource corresponding to the signal, and the transmission mode of the signal; wherein the structure information includes the CP length information of the starting symbol of the time unit and / or whether the starting position of the time unit includes the synchronization signal information and / or the CP length of the last symbol of the time unit; and / or the reception parameters include the reception resources used to receive the signal. Optionally, the reception resources include at least one of the following: reception port, reception antenna, reception beam, reception precoding weight, reception time, reception frequency domain, reception sector, and reception sequence resource.

[0504] In an optional embodiment, the above-mentioned signal includes at least one of the following signals: a data channel signal, a control channel signal, and a reference signal.

[0505] In an optional embodiment, the above-mentioned device also includes a fourth processing module, which is used to determine the correspondence between the second-class group indication information and parameters before sending the second-class group indication information to the second communication node, wherein the parameters include sending parameters and / or receiving parameters.

[0506] In an optional embodiment, the above-mentioned fourth processing module can determine the correspondence between the second-category group indication information and the above-mentioned sending parameters and / or receiving parameters in at least one of the following ways: determining the correspondence between the second-category group indication information and the parameters in a manner agreed upon with the second communication node; determining the correspondence between the second-category group indication information and the parameters by receiving the first-category group indication information fed back by the second communication node; and sending the above-mentioned correspondence to the second communication node.

[0507] In an optional embodiment, determining the correspondence between the second type of grouping indication information and the above-mentioned parameters by agreement with the above-mentioned second communication node includes: obtaining the correspondence between the second type of grouping indication information and the above-mentioned parameters based on the measurement reference signal sent by the above-mentioned second communication node.

[0508] In an optional embodiment, the above-mentioned first-category group indication information includes at least one of the following: group number information, resource information included in each group, resource number information included in each group, grouping mode indication information, grouping index information, and common parameter information corresponding to each group.

[0509] In an optional embodiment, the common parameters corresponding to each of the above-mentioned groups include at least one of the following parameters: cyclic prefix CP length information corresponding to each group, precoding matrix indication PMI information corresponding to each group, rank indication RI information corresponding to each group, channel instruction indication CQI information corresponding to each group, timing advance TA parameter information corresponding to each group, quasi-co-location parameter information corresponding to each group, and receiving resource information corresponding to each group.

[0510] In an optional embodiment, the grouping method indicated by the second type of grouping indication information includes at least one of the following methods: grouping based on receiving resources corresponding to the transmitting resources, grouping based on channel quality corresponding to the transmitting resources, resource grouping based on a predetermined multiplexing method, grouping based on a timing advance (TA) parameter, grouping based on a cyclic prefix (CP) length, grouping based on a spatial division multiplexing method, grouping based on a quasi-co-location relationship, grouping based on a measurement reference signal sent by the second communication node, or grouping based on channel characteristics; wherein the transmitting resources include one or more of the following resource types: transmitting beam resources, transmitting antenna resources, transmitting port resources, transmitting frequency domain resources, transmitting sequence resources, and transmitting time domain resources.

[0511] In an optional embodiment, the above-mentioned receiving resources include at least one of the following resources: receiving beam, receiving antenna, receiving port, receiving precoding matrix, receiving time, receiving frequency domain, receiving sector, and receiving sequence.

[0512] In an optional embodiment, the enclosed resource information includes resource information of a reference signal, wherein the reference signal includes at least one of the following types: a demodulation reference signal, and a measurement reference signal resource.

[0513] In an optional embodiment, the channel characteristics and / or quasi-co-location information of resources in the same group are the same.

[0514] In an optional embodiment, there is a correspondence between the above-mentioned group index and the port information of the sounding reference signal sent by the second communication node.

[0515] Figure 30 is a structural block diagram of a signal sending device according to an embodiment of the present invention. Figure 30 As shown, the device includes a third determining module 302 and a fourth sending module 304. The device is described below:

[0516] The third determining module 302 is configured to determine third type grouping indication information; the fourth sending module 304 is connected to the third determining module 302 and configured to send a demodulation reference signal and / or a control channel according to the third type grouping indication information.

[0517] In an optional embodiment, the third type of group indication information includes at least one of the following: group number information, resource information included in each group, resource number information included in each group, grouping mode indication information, and grouping index information.

[0518] In an optional embodiment, the above-mentioned third determination module 302 can determine the third category grouping indication information in at least one of the following ways: determining the third category grouping indication information based on the first category grouping indication information received from the second communication node; determining the third category grouping indication information based on the rules agreed with the second communication node.

[0519] In an optional embodiment, the above-mentioned fourth sending module 304 can send the demodulation reference signal and / or control channel in the following manner: sending the demodulation reference signal and / or control channel on N1 resources in time division according to the third type of grouping indication information, where N1 = x×N, or N1 is less than or equal to N, N1 is an integer greater than 0, N is the number of groups contained in the third type of grouping indication information, and x is an integer greater than or equal to 1.

[0520] In an optional embodiment, the above-mentioned apparatus further includes a fifth processing module, configured to configure x and / or N1 to the second communication node before sending a demodulation reference signal and / or a control channel according to the third type of grouping indication information.

[0521] In an optional embodiment, the above-mentioned fifth processing module can inform the second communication node of x and / or N1 in at least one of the following ways: inform the second communication node of x and / or N1 in a manner agreed upon with the second communication node; send x and / or N1 to the second communication node through semi-static signaling; send x and / or N1 to the second communication node through dynamic signaling.

[0522] In an optional embodiment, the demodulation reference signals on the above-mentioned N1 resources are sent in the same manner, wherein the demodulation reference signal is sent in at least one of the following manners: sending beam, sending port, sending antenna, sending precoding matrix, and sending frequency domain resources.

[0523] In an optional embodiment, the demodulation reference signal and / or control channel on the above-mentioned N1 resources is sent in the same manner as the data and / or control signal and / or reference signal sent after the demodulation reference signal and / or control channel, wherein the sending manner of the above-mentioned demodulation reference signal includes at least one of the following methods: sending beam, sending port, sending antenna, sending precoding matrix, and sending frequency domain resources.

[0524] In an optional embodiment, the above-mentioned fourth sending module 304 can send the demodulation reference signal and / or control channel in the following manner: sending the demodulation reference signal and / or control channel according to the third type of grouping indication information at an agreed time unit, and sending the demodulation reference signal and / or control channel only on one time-division resource at an unagreed time unit.

[0525] It should be noted that the above modules can be implemented through software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0526] The embodiment of the present invention further provides a storage medium. Optionally, in this embodiment, the storage medium may be configured to store program codes for executing the above steps.

[0527] Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store program codes.

[0528] Optionally, in this embodiment, the processor executes the above steps according to the program code stored in the storage medium.

[0529] Optionally, specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementations, and this embodiment will not be further elaborated here. Through the above embodiments, the receiving end can group transmit resources and then provide feedback to the transmitting end. Resources within the same group have certain common characteristics, while resources in different groups have different characteristics. Limited feedback information is used to provide the transmitting end with more information, thereby improving the transmitting end's scheduling flexibility and enabling the transmitting end to manage the resources effectively and efficiently. The transmitting end can obtain the receiving end's receive beam information corresponding to each transmit beam group, allowing the transmitting end to flexibly adjust the transmit beam. That is, the transmit beam can be transparent to the receiving end, increasing the flexibility of base station scheduling. Furthermore, considering that the number of receive beams is generally smaller than the number of transmit beams in downlink communications, the number of bits used to notify receive beam information in control signaling during data transmission is smaller than the number of bits used for transmit beams. Furthermore, considering the different characteristics of transmit beams, such as arrival time, quasi-colocation, and correlation, resources are grouped based on these characteristics, allowing the transmitting end to effectively manage and schedule resources based on the grouping information.

[0530] Obviously, those skilled in the art should understand that the modules or steps of the present application described above can be implemented using a general-purpose computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices. Alternatively, they can be implemented using program code executable by the computing device, so that they can be stored in a storage device and executed by the computing device. In some cases, the steps shown or described can be performed in a different order than herein, or they can be made into separate integrated circuit modules, or multiple modules or steps can be made into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0531] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A method for obtaining grouping indication information, characterized in that: Applied to a second communication node, comprising: Acquire second-type grouping indication information from the first communication node, wherein the second-type grouping indication information includes the following information: grouping index set information, grouping mode indication information, and resource information included in the group, wherein the grouping index set includes at least one grouping index, and the resource information included in the group includes reference signal resource information; determining, according to the second-type grouping indication information, a sending parameter of a signal corresponding to the second-type grouping indication information; The obtaining of the second-category grouping indication information from the first communication node includes at least one of the following: The second communication node receives the semi-static signaling, and obtains the second-category grouping indication information from the semi-static signaling; The second communication node receives dynamic signaling and obtains the second-category grouping indication information from the dynamic signaling.

2. The method according to claim 1, wherein: The corresponding signal includes a reference signal.

3. The method according to claim 1, characterized in that The sending parameters include the multiplexing method used by the signal.

4. The method according to claim 1, wherein: The sending parameters include a sending mode corresponding to the signal.

5. The method according to claim 1, wherein The grouping mode indicated by the second type of grouping indication information includes: Resources are grouped according to a predetermined reuse method.

6. The method according to claim 1, characterized in that The reference signal includes: measurement reference signal resources.

7. The method according to claim 3 or 5, characterized in that The multiplexing mode or the predetermined multiplexing mode includes: The second communication node supports spatial division multiplexing of signals corresponding to resources of different groups; The second communication node does not support spatial division multiplexing of signals corresponding to resources of the same group.

8. The method according to claim 3 or 5, characterized in that The multiplexing mode or the predetermined multiplexing mode includes: The set of multiplexing modes used when sending signals on resources within the same first-category resource group is set A; the set of multiplexing modes used when sending signals on resources of different first-category resource groups is set B; wherein, the set A is different from the set B.

9. The method according to claim 8, characterized in that The A set is a proper subset of the B set.

10. The method according to claim 9, characterized in that The A set is a time division multiplexing mode; the B set includes any one or a combination of time division, frequency division, and space division.

11. The method according to claim 1, characterized in that The method further comprises: receiving signaling information, wherein the signaling information includes third-category grouping indication information; receiving a demodulation reference signal and / or a control channel according to the third type of grouping indication information; The third type of grouping indication information includes at least one of the following: Information on the number of groups, information on resources included in each group, information on the number of resources included in each group, grouping mode indication information, and grouping index information, wherein the resource information included in the group includes reference signal resource information; Receiving a demodulation reference signal and / or a control channel according to the third type of grouping indication information includes: The demodulation reference signal and / or control channel is received on N1 time-divided resources according to the third-category grouping indication information, where N1=x×N, or N1 is less than or equal to N, N1 is an integer greater than 0, N is the number of third-category groups contained in the third-category grouping indication information, and x is an integer greater than or equal to 1.

12. The method according to claim 11, characterized in that Before receiving the demodulation reference signal and / or the control channel on the N1 time-division resources according to the third type of grouping indication information, the method further includes: Obtain the x and / or the N1.

13. The method according to claim 12, characterized in that Obtaining the x and / or the N1 includes at least one of the following methods: Acquiring according to a method agreed upon with the first communication node; Obtained through semi-static signaling configuration; Obtained through dynamic signaling configuration.

14. The method according to claim 11, characterized in that Receiving a demodulation reference signal and / or a control channel according to the third type of grouping indication information includes: The demodulation reference signal and / or control channel is received according to the third type of indication information in the agreed time unit, and the demodulation reference signal and / or control channel is received only on one time division resource in the unagreed time unit.

15. A method for notifying group indication information, characterized in that: Applied to a first communication node, comprising: determining second-type grouping indication information, where the second-type grouping indication information is used by the second communication node to determine a sending parameter of a signal corresponding to the second-type grouping indication information; Notifying the second communication node of the second-type grouping indication information, wherein the second-type grouping indication information includes the following information: grouping index set information, grouping mode indication information, and resource information included in the group, wherein the second-type grouping index set includes at least one grouping index, and the resource information included in the group includes reference signal resource information; The notifying the second communication node of the second-type grouping indication information includes at least one of the following methods: Sending the second-type group indication information to the second communication node through semi-static signaling; The second-category grouping indication information is sent to the second communication node via dynamic signaling.

16. The method according to claim 15, characterized in that The sending parameters include: the multiplexing method used by the signal.

17. The method according to claim 15, characterized in that The sending parameters include a sending mode corresponding to the signal.

18. The method according to claim 16, wherein: The signal includes: a reference signal.

19. The method according to claim 15, characterized in that The grouping mode indicated by the second type of grouping indication information includes: Resources are grouped according to a predetermined reuse method.

20. The method according to claim 15, wherein The reference signal includes: measurement reference signal resources.

21. The method according to claim 16 or 19, characterized in that The multiplexing mode or the predetermined multiplexing mode includes: The second communication node supports spatial division multiplexing of signals corresponding to resources of different groups; The second communication node does not support spatial division multiplexing of signals corresponding to resources of the same group.

22. The method according to claim 16 or 19, characterized in that The multiplexing mode or the predetermined multiplexing mode includes: The set of multiplexing modes used when sending signals on resources within the same first-category resource group is set A; the set of multiplexing modes used when sending signals on resources of different first-category resource groups is set B; wherein, the set A is different from the set B.

23. The method according to claim 22, characterized in that The A set is a proper subset of the B set.

24. The method according to claim 23, wherein The A set is a time division multiplexing mode; the B set includes any one or a combination of time division, frequency division, and space division.

25. The method according to claim 15, wherein The method further comprises: receiving signaling information, wherein the signaling information includes third-category grouping indication information; Sending a demodulation reference signal and / or a control channel according to the third type of grouping indication information; wherein the third type of grouping indication information includes at least one of the following: Information on the number of groups, information on resources included in each group, information on the number of resources included in each group, grouping mode indication information, and grouping index information, wherein the resource information included in the group includes reference signal resource information; The sending of a demodulation reference signal and / or a control channel according to the third type of grouping indication information includes: The demodulation reference signal and / or control channel information is sent on N1 resources in time division according to the third type of grouping indication information, where N1=x×N, or N1 is less than or equal to N, N1 is an integer greater than 0, N is the number of groups information, and x is an integer greater than or equal to 1.

26. The method according to claim 25, characterized in that Before sending the demodulation reference signal and / or control channel information according to the third type of grouping indication information, the method further includes: The x and / or N1 are informed to the second communication node.

27. The method according to claim 26, characterized in that Notifying the second communication node of x and / or N1 includes at least one of the following methods: Informing the second communication node of the x and / or N1 in a manner agreed upon with the second communication node; Sending the x and / or the N1 to the second communication node through semi-static signaling; The x and / or the N1 are sent to the second communication node through dynamic signaling.

28. The method according to claim 25, characterized in that The demodulation reference signals on the N1 resources are sent in the same manner, wherein the demodulation reference signal is sent in at least one of the following manners: sending beam, sending port, sending antenna, sending precoding matrix, and sending frequency domain resources.

29. The method according to claim 25, characterized in that The demodulation reference signal and / or control channel on the N1 resources is sent in the same manner as the data and / or control signal and / or reference signal sent after the demodulation reference signal and / or control channel, wherein the sending manner of the demodulation reference signal includes at least one of the following manners: sending beam, sending port, sending antenna, sending precoding matrix, and sending frequency domain resources.

30. The method according to claim 25, wherein Sending a demodulation reference signal and / or a control channel according to the third type of grouping indication information includes: The demodulation reference signal and / or control channel is sent according to the third type of grouping indication information in the agreed time unit, and the demodulation reference signal and / or control channel is sent only on one time division resource in the unagreed time unit.

31. A communication device, characterized in that: include: memory, and one or more processors; The memory is configured to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method as claimed in any one of claims 1 to 14 or 15 to 30.

32. A storage medium, characterized in that The storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 14 or 15 to 30 is implemented.

Images