CN111092708B

CN111092708B - Transmission method, transmission device, first communication node, second communication node and medium

Info

Publication number: CN111092708B
Application number: CN201911090287.0A
Authority: CN
Inventors: 王瑜新; 鲁照华; 李儒岳; 蒋创新; 吴昊; 李永
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2024-09-10
Anticipated expiration: 2039-11-08
Also published as: CN111092708A; WO2021088851A1

Abstract

The application provides a transmission method, a transmission device, a first communication node, a second communication node and a medium. The method configures a Sounding Reference Signal (SRS) resource set, wherein the SRS resource set is used for beam management, codebook, non-codebook or antenna switching; and receiving SRS sent by the second communication node according to the SRS resource set.

Description

Transmission method, transmission device, first communication node, second communication node and medium

Technical Field

The present application relates to wireless communication networks, for example, to a transmission method, apparatus, first communication node, second communication node, and medium.

Background

With the development of communication technology, the data traffic demand is increasing. The first communication node may determine channel state information of the second communication node according to a Sounding reference signal (Sounding REFERENCE SIGNAL, SRS) sent by the second communication node, and accordingly perform operations such as frequency domain selection scheduling, closed loop power control, and the like. In the prior art, signaling configuration and signal transmission flexibility of SRS between a first communication node and a second communication node are poor, so that signal transmission can not be ensured to be effectively and accurately carried out under various conditions, and communication reliability is affected.

Disclosure of Invention

The application provides a transmission method, a transmission device, a first communication node, a second communication node and a medium, so as to improve the flexibility of signal transmission and the reliability of communication.

The embodiment of the application provides a transmission method, which is applied to a first communication node and comprises the following steps:

Configuring a Sounding Reference Signal (SRS) resource set, wherein the SRS resource set is used for beam management, codebook, non-codebook or antenna switching;

And receiving SRS sent by the second communication node according to the SRS resource set.

The embodiment of the application also provides a transmission method which is applied to the second communication node and comprises the following steps:

receiving configuration information of SRS resource sets of a first communication node, wherein the SRS resource sets are used for beam management, codebook, non-codebook or antenna switching;

And sending SRS according to the configuration information of the SRS resource set.

The embodiment of the application also provides a transmission device, which comprises:

the configuration module is configured to configure a Sounding Reference Signal (SRS) resource set, wherein the SRS resource set is used for beam management, codebook, non-codebook or antenna switching;

the signal receiving module is configured to receive the SRS sent by the second communication node according to the SRS resource set.

The configuration receiving module is configured to receive SRS resource set configuration information of the first communication node;

And the signal transmission module is configured to transmit SRS according to the configuration information of the SRS resource set, wherein the SRS resource set is used for beam management, codebook, non-codebook or antenna switching.

The embodiment of the application also provides a first communication node, which comprises:

One or more processors;

A storage means for storing one or more programs;

The one or more programs, when executed by the one or more processors, cause the one or more processors to implement the transmission method as described above as being applied to the first communication node.

The embodiment of the application also provides a second communication node, which comprises:

One or more processors;

A storage means for storing one or more programs;

When the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the above-described transmission method applied to the second communication node.

The embodiment of the application also provides a computer readable storage medium, and the computer readable storage medium stores a computer program which realizes the transmission method when being executed by a processor.

Drawings

Fig. 1 is a flowchart of a transmission method applied to a first communication node according to an embodiment;

Fig. 2 is a flowchart of a transmission method applied to a second communication node according to an embodiment;

fig. 3 is a schematic structural diagram of a transmission device according to an embodiment;

FIG. 4 is a schematic diagram of another transmission device according to an embodiment;

FIG. 5 is a schematic diagram of a first communication node according to an embodiment;

Fig. 6 is a schematic structural diagram of a second communication node according to an embodiment.

Detailed Description

The application is described below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting thereof. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be arbitrarily combined with each other. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present application are shown in the drawings.

In Release 10 standard (LTE-a Release 10) of long term evolution technology upgrade (Long Term Evolution-Advanced, LTE-a), non-precoded SRS, i.e., antenna-specific SRS, is used in Uplink communication, and a reference signal (De Modulation REFERENCE SIGNAL, DMRS) for demodulation of a Physical Uplink shared channel (Physical Uplink SHARED CHANNEL, PUSCH) is precoded. The first communication node can estimate the original uplink CSI by receiving the non-precoded SRS, and the precoded DMRS cannot enable the first communication node to estimate the original uplink CSI. In this case, when the second communication node transmits the non-precoded SRS using multiple antennas, the required SRS resources are increased, resulting in a decrease in the number of second communication nodes that can be multiplexed simultaneously in the system. The second communication node may send SRS through two triggering modes of higher layer signaling (also referred to as triggering through TRIGGER TYPE 0) or downlink control information (also referred to as triggering through TRIGGER TYPE 1), where the triggering is based on the higher layer signaling, and the triggering is based on downlink control information (Downlink Control Information, DCI) and is based on the non-periodic SRS. A physical downlink control channel (Physical Downlink Control Channel, PDCCH) is used to carry DCI, where the DCI may include uplink and downlink scheduling information, and uplink power control information. The method for aperiodically transmitting the SRS is added in the LTE-A Release 10, so that the utilization rate of SRS resources is improved to a certain extent, and the flexibility of resource scheduling is improved.

In the Realease standard of New Radio, NR, the SRS is used in various manners, in this case, in the prior art, signaling configuration and signal transmission flexibility between the first communication node and the second communication node about the SRS are poor, and it cannot be guaranteed that signal transmission is effectively and accurately performed under various conditions, which affects communication reliability. For example, in the case where the usage parameter (usage) of the SRS resource set is configured as a codebook (codebook) or a non-codebook, the first communication node may configure two SRS resource sets for the second communication node, where the two SRS resource sets may be periodic or aperiodic, and how the parameters in the two SRS resource sets are related and configured affects reliable transmission of the signal. For another example, if the first communication node configures only the periodic SRS resource set for the second communication node in the case that the usage parameter of the SRS resource set is configured as a codebook or a non-codebook, the first communication node wants to trigger the second communication node to send the non-periodic SRS through downlink control information (Downlink Control Information, DCI) or the like, and in this case, how to configure the periodic SRS resource set affects determining the transmission slot of the non-periodic SRS and also affects the reliable transmission of the signal.

In the embodiment of the present application, the first communication Node refers to a network side, a base station, a service Node, etc., for example, an evolved Node B (eNB) may configure a second communication Node device through downlink control information, and the second communication Node refers to a terminal side, a User Equipment (User Equipment), etc., and may accept DCI control or accept configuration of higher layer signaling.

Fig. 1 is a flowchart of a transmission method according to an embodiment, where the transmission method may be applied to a first communication node. As shown in fig. 1, the method provided in this embodiment includes step 110 and step 120.

In step 110, a sounding reference signal, SRS, resource set is configured for beam management, codebook, non-codebook, or antenna switching.

In step 120, an SRS is received that the second communication node transmits according to the SRS resource set.

A Sounding REFERENCE SIGNAL (SRS) is a signal used between a second communication node device and a first communication node to measure radio channel Information (CSI). In the long term evolution system, the second communication node periodically transmits the uplink SRS on the last data symbol of the transmission subframe according to parameters such as a frequency band, a frequency domain position, a sequence cyclic shift, a period, a subframe offset and the like indicated by the first communication node. And the first communication node judges the CSI of the UE uplink according to the received SRS, and performs operations such as frequency domain selection scheduling, closed loop power control and the like according to the obtained CSI.

In this embodiment, the first communication node configures the SRS resource set based on the use of the SRS resource set, and on this basis, receives the SRS transmitted by the second communication node through the configured SRS resource set, thereby improving the flexibility of signal transmission and the reliability of communication.

In an embodiment, for codebook-based or non-codebook based transmissions, the SRS resource set includes a first resource set and a second resource set; the resource type corresponding to the first resource set is non-periodic resource, semi-continuous resource or periodic resource; the resource type corresponding to the second resource set is non-periodic resource, semi-persistent resource or periodic resource.

In this embodiment, the usage parameter (usage) of the SRS resource set is configured as a codebook or a non-codebook, and in this case, the first communication node configures two SRS resource sets for the second communication node, where the resource types (resource types) corresponding to the two SRS resource sets may be any one of a periodic resource, a semi-persistent resource, or a periodic resource. For example, the first communication node configures SRS resource set 0 and SRS resource set 1 for the second communication node, SRS resource set 0 may be configured as aperiodic resources, and SRS resource set 1 may be configured as periodic resources.

In an embodiment, the bandwidths or resource block positions corresponding to the first resource set and the second resource set are the same; and the Quasi Co-Location (QCL) relation of the first resource set and the second resource set is at least one of type A, type B, type C and type D.

For example, the first communication node configures SRS Resource set 0 and SRS Resource set 1 for the second communication node, SRS Resource set 0 is configured as an aperiodic Resource, SRS Resource set 1 is configured as a periodic Resource, SRS Resource set 0 and SRS Resource set 1 have the same bandwidth or the same Resource Block (RB) location, and SRS Resource set 0 and SRS Resource set 1 have one or more of QCL Type-a, QCL Type-B, QCL Type-C, and QCL Type-D relationships.

In an embodiment, the number of SRS resources configured in the first set of resources is equal to the number of SRS resources configured in the second set of resources; the number of SRS resources in one slot configured in the first set of resources is equal to the number of SRS resources in the corresponding slot configured in the second set of resources. For example, the first communication node configures an SRS resource set 0 and an SRS resource set 1 for the second communication node, the number of SRS resources in the SRS resource set 0 is equal to the number of SRS resources in the SRS resource set 1, and the number of SRS resources in corresponding slots in the two SRS resource sets is also equal.

In an embodiment, the spatial relationship information (Spatial Relation Information) of the first set of resources is the same as the spatial relationship information of the second set of resources. For example, the first communication node configures an SRS resource set 0 and an SRS resource set 1 for the second communication node, and spatial relationship information of the SRS resource set 0 and the SRS resource set 1 is the same.

In an embodiment, the SRS resource set includes a first resource set, and a resource type of the first resource set is a periodic resource.

In this embodiment, when the usage parameter of the SRS resource set is configured as a codebook, the first communication node configures only one resource set, that is, a periodic SRS resource set, for the second communication node, and the first communication node may trigger the second communication node to send an aperiodic SRS through the SRS request field in the DCI. After detecting the SRS request field in the DCI, the second communication node may use the periodic SRS resource set as an aperiodic SRS resource set.

In an embodiment, further comprising: triggering a second communication node to send an aperiodic SRS on a target time slot through an SRS request domain of downlink control information, wherein the target time slot is a1 st effective time slot counted from a reference time slot, or is a k+1st effective time slot counted from the reference time slot, k is 0 or a positive integer, or is a k effective time slot counted from the reference time slot, and k is a positive integer; the reference time slot is a time slot corresponding to a value obtained by rounding down the product of n and a first parameter, n corresponds to a time slot triggering the aperiodic SRS, the first parameter is the ratio of mu _SRS power of 2 to mu _PDCCH power of 2, and mu _SRS is the subcarrier interval configuration triggering the aperiodic SRS; mu _PDCCH is the subcarrier spacing configuration of the PDCCH carrying the trigger information.

In this embodiment, assuming that the UE receives DCI triggering the aperiodic SRS in the slot n, the determining manner of the slot in which the UE transmits the aperiodic SRS includes at least one of the following:

1) At the slave side The 1 st valid (valid) slot of the start count transmits an aperiodic SRS resource set, where mu _SRS is the subcarrier spacing configuration of the triggered SRS, and mu _PDCCH is the subcarrier spacing configuration of the PDCCH carrying the trigger information.

2) At the slave sideThe k+1st valid slot to start counting transmits the set of aperiodic SRS resources, where k is 0 or a positive integer. Mu _SRS is the subcarrier spacing configuration of the triggered SRS, mu _PDCCH is the subcarrier spacing configuration of the PDCCH carrying the trigger information, and the value of k can be determined based on the state of the SRS request domain.

Table1 is a mapping table of SRS request domain and k value in an embodiment. As shown in table1, when the SRS request field is 00, the k value is invalid, and the aperiodic SRS is not triggered; in the case where the SRS request field is 01, the k value is 0, i.e., fromThe 1 st valid slot of the start count transmits the set of aperiodic SRS resources.

Table 1 SRS request Domain to k value mapping Table

3) At the slave sideAnd starting counting the kth effective time slot to send an aperiodic SRS resource set, wherein k is a non-negative integer, mu _SRS is subcarrier interval configuration of the triggered SRS, mu _PDCCH is subcarrier interval configuration of the PDCCH carrying trigger information, and the value of k can be determined based on the state of the SRS request domain.

TABLE 2 mapping relationship table of another SRS request field and k value

Table 2 is a mapping table of another SRS request domain and k value in an embodiment. As shown in table 2, when the SRS request field is 00, the k value is invalid, and the aperiodic SRS is not triggered; in the case where the SRS request field is 01, the k value is 1, i.e., fromThe 1 st valid slot of the start count transmits the set of aperiodic SRS resources.

In an embodiment, the active time slots include at least one of:

The uplink symbols available in the time slots are used for all SRS resource transmission in an SRS resource set, and the time slots meet the minimum time requirement between a physical downlink control channel (Physical Downlink Control Channel, PDCCH) triggering the aperiodic SRS and all SRS transmission in the SRS resource set;

The available uplink symbols in the time slot are used for all SRS resource transmission in the SRS resource set, and the minimum time requirement between the PDCCH triggering the aperiodic SRS and all SRS transmission in the SRS resource set is met, and the time slot is a time slot except the periodic SRS transmission time slot.

In this embodiment, if one slot is a valid slot, the slot satisfies: the available uplink symbols in the time slot can be used for transmitting all SRS resources in the SRS resource set, and the time slot can meet the minimum time requirement between the PDCCH triggering the aperiodic SRS and all SRS transmissions in the SRS resource set; in some embodiments, it is also satisfied that: the slot is not a slot in which the periodic SRS is transmitted.

In an embodiment, the power control parameters of the first resource set configuration and the power control parameters of the second resource set configuration are the same; the power control parameters include: transmit power, path loss compensation, and path loss.

In this embodiment, for codebook-based transmission or non-codebook-based transmission, when the SRS usage parameter is configured as a codebook or a non-codebook, the first communication node configures two SRS resource sets for the second communication node, where the resource types corresponding to the two SRS resource sets may be any one of periodic resources, semi-persistent resources, or periodic resources, respectively. For example, the first communication node configures SRS resource set 0 and SRS resource set 1 for the second communication node, SRS resource set 0 may be configured as aperiodic resources, and SRS resource set 1 may be configured as periodic resources. The power control parameters corresponding to the SRS resource set 0 and the SRS resource set 1 are the same, and the power control parameters include transmission power (alpha), path loss compensation (p 0) and path loss (pathlossReferenceRS) of the SRS signal.

In this embodiment, the power control parameters in the UE desired periodic SRS resource set and the aperiodic SRS resource set are both configured to the same value.

In an embodiment, the difference between the transmission power of the first set of resources and the transmission power of the second set of resources is a preset value, or is configured by the first communication node through radio resource control signaling.

In this embodiment, the difference between the transmission power of the first resource set and the transmission power of the second resource set is a preset value. For example, the first communication node configures SRS resource set 0 and SRS resource set 1 for the second communication node, SRS resource set 0 may be configured as aperiodic resources, and SRS resource set 1 may be configured as periodic resources. The transmission power of the periodic SRS resource set differs from the transmission power of the non-periodic SRS resource set by M dBm, where M is a predefined value or is configured by the base station through RRC signaling.

In an embodiment, further comprising: and under the condition that the resource type corresponding to the first resource set is periodic resource and the resource type corresponding to the second resource set is aperiodic resource, indicating the second communication node to determine SRS resources from the nearest resource set through a scheduling request indication field in the PDCCH, wherein the nearest resource set is the first resource set or the second resource set nearest to the time slot where the PDCCH is positioned.

In this embodiment, when the SRS usage parameter is configured as a codebook or a non-codebook, the first communication node configures two SRS resource sets for the second communication node, for example, configured as a periodic SRS resource set and an aperiodic SRS resource set, respectively, and then the indication (Schduling Request Indication, SRI) field is used to indicate that 1 SRS resource is selected from the nearest (last) SRS resource set through a scheduling request indication (Schduling Request Indication, SRI) field in the PDCCH, where the nearest SRS resource set is the periodic SRS resource set or the aperiodic SRS resource set nearest to the timeslot where the PDCCH carrying the SRI field is located.

In an embodiment, in a case that the resource type corresponding to the SRS resource set is at least one of periodic resources and semi-persistent resources, the parameters of the configured SRS resource set include at least one of: an aperiodic SRS resource trigger state (denoted as aperiodicSRS-ResourceTrigger), a periodic SRS resource trigger state (denoted as periodicSRS-ResourceTrigger), a semi-persistent SRS resource trigger state (denoted as semi-PERSISTENTSRS-ResourceTrigger), an aperiodic SRS resource trigger state list (denoted as aperiodicSRS-ResourceTriggerList), a periodic SRS resource trigger state list (denoted as periodicSRS-ResourceTriggerList), and a semi-persistent SRS resource trigger state list (denoted as semi-PERSISTENTSRS-ResourceTriggerList).

In this embodiment, when the SRS resource set is a periodic resource and/or a semi-persistent resource, parameters of the SRS resource set are configured to indicate a resource type and a trigger state of the SRS resource in the resource set. For example, parameters aperiodicSRS-ResourceTrigger in SRS resource set 1 are configured to "01", and if the status of the SRS request field in the DCI is 01, this means that this SRS resource set 1 is triggered or selected, thereby instructing the second communication node to transmit SRS using this SRS resource set; if the state of parameters aperiodicSRS-ResourceTrigger in the other SRS resource set is not "01," this indicates that the other SRS resource set is not transmitted. That is, the second communication node may transmit the SRS resource set if the state of aperiodicSRS-ResourceTrigger in the SRS resource set is the same as the state of the SRS request field in the DCI.

In an embodiment, further comprising: and under the condition that a plurality of SRS resource sets are configured and the resource types of the SRS resource sets are all periodic resources, the second communication node is instructed to select one SRS resource set through downlink Control information or a media access Control layer Control unit (Medium Access Control, control Element, MAC CE) signaling, and the transmission of other SRS resource sets is stopped or canceled.

In this embodiment, the first communication node configures a plurality of SRS resource sets for the second communication node, where the resource types of the plurality of SRS resource sets are all periodic. In addition, the first communication node instructs the second communication node to select one SRS resource set from the plurality of SRS resource sets through DCI or a medium access control unit MAC CE signaling, for SRS transmission, and stops periodic SRS transmission corresponding to other unselected SRS resource sets, so that the period size of the periodic SRS can be dynamically adjusted according to the speed of channel variation. For example, when the channel variation is fast, a SRS resource set with a small period is selected; when the channel variation is slow, a periodic SRS resource set is selected.

In an embodiment, a plurality of SRS periods are configured in an SRS resource set or SRS resource, and the first communication node instructs the second communication node to select one of the plurality of SRS periods for SRS transmission through DCI or a medium access control unit MAC CE signaling, and simultaneously stops transmission of other unselected SRS periods.

In addition, in the case where the SRS resource set includes a plurality of SRS resources, the second communication node does not expect the periods of the plurality of SRS resources to be different, that is, expects the plurality of SRS resources to be configured to be the same period.

In the embodiment, the first communication node configures the SRS resource set based on the use of the SRS resource set, and triggers aperiodic SRS transmission by configuring the resource type, the number of resources, the power control parameter, and the like and by using the SRS request domain or the SRI domain of the downlink control information, and on the basis, receives the SRS transmitted by the second communication node through the configured SRS resource set, thereby improving the flexibility of signal transmission and the reliability of communication.

Fig. 2 is a flowchart of a transmission method according to an embodiment. The method is applicable to a second communication node. As shown in fig. 2, the method provided in this embodiment includes step 210 and step 220.

In step 210, configuration information of a set of SRS resources of a first communication node is received, where the set of SRS resources is used for beam management, codebook, non-codebook or antenna switching.

In step 220, SRS is transmitted according to the configuration information of the SRS resource set.

In this embodiment, the SRS resource set is configured based on different purposes, and based on this, the SRS is transmitted according to the configuration information of the SRS resource set, thereby improving flexibility of signal transmission and reliability of communication.

In an embodiment, for codebook-based or non-codebook based transmissions, the SRS resource set includes a first resource set and a second resource set;

The resource type corresponding to the first resource set is non-periodic resource, semi-continuous resource or periodic resource;

the resource type corresponding to the second resource set is non-periodic resource, semi-persistent resource or periodic resource.

In an embodiment, the bandwidths or resource block positions corresponding to the first resource set and the second resource set are the same; the quasi co-location relationship between the first resource set and the second resource set is at least one of type A, type B, type C and type D.

In an embodiment, the second communication node expects the number of SRS resources configured in the first set of resources to be equal to the number of SRS resources configured in the second set of resources; the second communication node expects the number of SRS resources in one slot configured in the first set of resources to be equal to the number of SRS resources in the corresponding slot configured in the second set of resources.

In this embodiment, the second communication node may notify, by means of convention or reporting, the first communication node that the number of resources between the two types of resource sets expected by the second communication node satisfies: the number of the SRS resources configured in the first resource set is equal to the number of the SRS resources configured in the second resource set, and the number of the SRS resources in the corresponding time slot is equal. In an embodiment, the second communication node expects that the spatial relationship information of the first set of resources is the same as the spatial relationship information of the second set of resources.

In this embodiment, the second communication node may notify, by means of convention or reporting, the first communication node that the spatial relationship information between the two types of resource sets expected by the second communication node satisfies: the spatial relationship information of the first set of resources is the same as the spatial relationship information of the second set of resources.

In an embodiment, for codebook-based or non-codebook based transmissions, the SRS resource set includes a first resource set having a periodic resource of a resource type.

In an embodiment, further comprising: receiving trigger information;

The triggering information is indicated by a SRS request field of the downlink control information through the first communication node, and the triggering information is used for triggering the second communication node to send an aperiodic SRS on a target time slot, wherein the target time slot is a1 st effective time slot counted from a reference time slot, or a k+1st effective time slot counted from the reference time slot, k is 0 or a positive integer, or a kth effective time slot counted from the reference time slot, and k is a positive integer;

The reference time slot is a time slot corresponding to a value obtained by rounding down the product of n and a first parameter, n corresponds to a time slot triggering the aperiodic SRS, the first parameter is the ratio of mu _SRS power of 2 to mu _PDCCH power of 2, and mu _SRS is the subcarrier interval configuration triggering the aperiodic SRS; mu _PDCCH is the subcarrier spacing configuration of the PDCCH carrying the trigger information.

In an embodiment, the active time slots include at least one of:

The uplink symbols available in the time slots are used for transmitting all SRS resources in an SRS resource set, and the time slots meet the minimum time requirement between a PDCCH triggering the aperiodic SRS and all SRS transmissions in the SRS resource set;

In an embodiment, the second communication node expects the power control parameters of the first resource set configuration to be the same as the power control parameters of the second resource set configuration; the power control parameters include: transmit power, path loss compensation, and path loss.

In this embodiment, the second communication node may notify, by means of a contract or report, the first communication node that the power control parameters between the two types of resource sets expected by the second communication node satisfy: the power control parameters of the first set of resources and the power control parameters of the second set of resources are configured to be the same.

In an embodiment, further comprising: receiving trigger information;

And when the resource type corresponding to the first resource set is periodic resource and the resource type corresponding to the second resource set is aperiodic resource, the triggering information is indicated by the first communication node through a scheduling request indication field in the PDCCH, and the triggering information is used for indicating the second communication node to determine SRS resources from the nearest resource set, wherein the nearest resource set is the first resource set or the second resource set nearest to the time slot where the PDCCH is located.

In the case that the resource type corresponding to the SRS resource set is at least one of periodic resource and semi-persistent resource, the parameters of the configured SRS resource set include at least one of: an aperiodic SRS resource triggering state, a periodic SRS resource triggering state, a semi-persistent SRS resource triggering state, an aperiodic SRS resource triggering state list, a periodic SRS resource triggering state list, and a semi-persistent SRS resource triggering state list.

In an embodiment, further comprising: and under the condition that a plurality of SRS resource sets are configured and the resource types of the SRS resource sets are periodic, the first communication node instructs the second communication node to select one SRS resource set through downlink control information or MAC CE signaling and stops or cancels the transmission of other SRS resource sets.

In this embodiment, the first communication node configures a plurality of SRS resource sets for the second communication node, where the resource types of the plurality of SRS resource sets are all periodic resources. In addition, the first communication node instructs the second communication node to select one SRS resource set from the plurality of SRS resource sets through DCI or a medium access control unit MAC CE signaling, for SRS transmission, and stops periodic SRS transmission corresponding to other unselected SRS resource sets, so that the period size of the periodic SRS can be dynamically adjusted according to the speed of channel variation. For example, when the channel variation is fast, a SRS resource set with a small period is selected; when the channel variation is slow, a periodic SRS resource set is selected.

In an embodiment, a plurality of SRS periods are configured in an SRS resource set or SRS resource, and the first communication node instructs the second communication node to select one of the plurality of SRS periods through DCI or a medium access control unit MAC CE signaling, for SRS transmission, and stops transmission of other unselected SRS periods.

In addition, when the SRS resource set includes a plurality of SRS resources, the second communication node does not expect that the plurality of SRS resources have different periods, that is, expects that the plurality of SRS resources are configured to have the same period.

In the embodiment, the first communication node configures the SRS resource set based on the use of the SRS resource set, and triggers aperiodic SRS transmission by configuring the resource type, the number of resources, the power control parameter, and the like and by using the SRS request domain or the SRI domain of the downlink control information, and on the basis, the second communication node transmits the SRS through the configured SRS resource set, thereby improving the flexibility of signal transmission and the reliability of communication.

The embodiment of the application also provides a transmission device. Fig. 3 is a schematic structural diagram of a transmission device according to an embodiment. As shown in fig. 3, the transmission device includes: a configuration module 310 and a signal receiving module 320.

A configuration module 310, configured to configure a sounding reference signal SRS resource set, where the SRS resource set is used for beam management, codebook, non-codebook, or antenna switching;

And the signal receiving module 320 is configured to receive the SRS sent by the second communication node according to the SRS resource set.

In this embodiment, the SRS resource set is configured based on the use of the SRS resource set, and on this basis, the second communication node receives the SRS transmitted through the configured SRS resource set, thereby improving the flexibility of signal transmission and the reliability of communication.

In an embodiment, the bandwidths or resource block positions corresponding to the first resource set and the second resource set are the same;

The quasi co-location relationship between the first resource set and the second resource set is at least one of type A, type B, type C and type D.

In an embodiment, the number of SRS resources configured in the first set of resources is equal to the number of SRS resources configured in the second set of resources;

the number of SRS resources in one slot configured in the first set of resources is equal to the number of SRS resources in the corresponding slot configured in the second set of resources.

In an embodiment, the spatial relationship information of the first set of resources is the same as the spatial relationship information of the second set of resources.

In an embodiment, further comprising:

The triggering module is configured to trigger the second communication node to send an aperiodic SRS on a target time slot through an SRS request domain of downlink control information, wherein the target time slot is a1 st effective time slot counted from a reference time slot, or is a k+1st effective time slot counted from the reference time slot, k is 0 or a positive integer, or is a k effective time slot counted from the reference time slot, and k is a positive integer;

In an embodiment, the active time slots include at least one of:

In an embodiment, the power control parameters of the first resource set configuration and the power control parameters of the second resource set configuration are the same;

the power control parameters include: transmit power, path loss compensation, and path loss.

In an embodiment, further comprising:

the indication module is configured to instruct, by using a scheduling request indication field in the PDCCH, the second communication node to determine SRS resources from a nearest resource set when a resource type corresponding to the first resource set is a periodic resource and a resource type corresponding to the second resource set is an aperiodic resource, where the nearest resource set is the first resource set or the second resource set nearest to a timeslot where the PDCCH is located.

In an embodiment, in a case that the resource type corresponding to the SRS resource set is at least one of periodic resources and semi-persistent resources, the parameters of the configured SRS resource set include at least one of: an aperiodic SRS resource triggering state, a periodic SRS resource triggering state, a semi-persistent SRS resource triggering state, an aperiodic SRS resource triggering state list, a periodic SRS resource triggering state list, and a semi-persistent SRS resource triggering state list.

In an embodiment, further comprising: and under the condition that a plurality of SRS resource sets are configured and the resource types of the SRS resource sets are periodic resources, the second communication node is instructed to select one SRS resource set through downlink control information or a media access control layer control unit (MAC CE) signaling, and the transmission of other SRS resource sets is stopped or canceled.

The transmission apparatus according to the present embodiment belongs to the same inventive concept as the transmission method applied to the first communication node according to the above embodiment, and technical details not described in detail in the present embodiment can be seen in any of the above embodiments, and the present embodiment has the same advantages as those of performing the transmission method applied to the first communication node.

The embodiment of the application also provides a transmission device. Fig. 4 is a schematic structural diagram of a transmission device according to an embodiment. As shown in fig. 4, the transmission device includes: the receiving module 410 and the signaling module 420 are configured.

A configuration receiving module 410 configured to receive SRS resource set configuration information of the first communication node;

The signal sending module 420 is configured to send SRS according to the configuration information of the SRS resource set, where the SRS resource set is used for beam management, codebook, non-codebook, or antenna switching.

In an embodiment, the second communication node expects the number of SRS resources configured in the first set of resources to be equal to the number of SRS resources configured in the second set of resources;

The second communication node expects the number of SRS resources in one slot configured in the first set of resources to be equal to the number of SRS resources in the corresponding slot configured in the second set of resources.

In an embodiment, the second communication node expects that the spatial relationship information of the first set of resources is the same as the spatial relationship information of the second set of resources.

In an embodiment, further comprising: the first receiving module is used for receiving the trigger information; the triggering information is indicated by a SRS request field of the downlink control information through the first communication node, and the triggering information is used for triggering the second communication node to send an aperiodic SRS on a target time slot, wherein the target time slot is a1 st effective time slot counted from a reference time slot, or a k+1st effective time slot counted from the reference time slot, k is 0 or a positive integer, or a kth effective time slot counted from the reference time slot, and k is a positive integer;

In an embodiment, the active time slots include at least one of:

In an embodiment, the second communication node expects the power control parameters of the first resource set configuration to be the same as the power control parameters of the second resource set configuration;

In an embodiment, further comprising:

the second receiving module is used for receiving the trigger information; and when the resource type corresponding to the first resource set is periodic resource and the resource type corresponding to the second resource set is aperiodic resource, the triggering information is indicated by the first communication node through a scheduling request indication field in the PDCCH, and the triggering information is used for indicating the second communication node to determine SRS resources from the nearest resource set, wherein the nearest resource set is the first resource set or the second resource set nearest to the time slot where the PDCCH is located.

The transmission device according to the present embodiment belongs to the same inventive concept as the transmission method applied to the second communication node according to the above embodiment, and technical details not described in detail in the present embodiment can be seen in any of the above embodiments, and the present embodiment has the same advantages as those of executing the transmission method applied to the second communication node.

The embodiment of the application also provides a first communication node. The transmission method applied to the first communication node may be performed by a transmission means which may be implemented in software and/or hardware and integrated in the first communication node. The first communication node is a network side, e.g. a base station.

Fig. 5 is a schematic structural diagram of a first communication node according to an embodiment. As shown in fig. 5, a first communication node provided in this embodiment includes: a processor 310 and a storage device 320. The processor in the first communication node may be one or more, for example a processor 310 in fig. 5, and the processor 310 and the storage 320 in the device may be connected by a bus or other means, for example by a bus connection in fig. 5.

The one or more programs are executed by the one or more processors 310 to cause the one or more processors to implement the transmission method of any of the embodiments described above as applied to the first communication node.

The storage 320 in the first communication node is used as a computer readable storage medium, and may be used to store one or more programs, which may be software programs, computer executable programs, and modules, such as program instructions/modules corresponding to the transmission method in the embodiment of the present invention (for example, the modules in the transmission device shown in fig. 3 include a configuration module 310 and a signal receiving module 320). The processor 310 executes various functional applications of the first communication node and data processing by running software programs, instructions and modules stored in the storage 320, i.e. implements the transmission method applied to the first communication node in the above-described method embodiment.

The storage device 320 mainly includes a storage program area and a storage data area, wherein the storage program area can store an operating system and at least one application program required by functions; the storage data area may store data created according to the use of the device, etc. (e.g., configuration information, SRS resource set, etc. in the above-described embodiments). In addition, storage 320 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, the storage 320 may further include memory remotely located with respect to the processor 310, which may be connected to the first communication node via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

And, when one or more programs included in the first communication node are executed by the one or more processors 310, the following operations are implemented: configuring a Sounding Reference Signal (SRS) resource set, wherein the SRS resource set is used for beam management, codebook, non-codebook or antenna switching; and receiving SRS sent by the second communication node according to the SRS resource set.

The first communication node according to the present embodiment belongs to the same inventive concept as the transmission method according to the above embodiment, and technical details not described in detail in the present embodiment can be seen in any of the above embodiments, and the present embodiment has the same advantages as those of executing the transmission method according to the first communication node.

The embodiment of the application also provides a second communication node. The transmission method applied to the second communication node may be performed by a transmission means which may be implemented in software and/or hardware and integrated in the second communication node. The second communication node is a user terminal.

Fig. 6 is a schematic structural diagram of a second communication node according to an embodiment. As shown in fig. 6, a second communication node provided in this embodiment includes: a processor 410 and a storage 420. The processor in the second communication node may be one or more, for example a processor 410 in fig. 6, and the processor 410 and the memory means 420 in the device may be connected by a bus or other means, for example by a bus connection in fig. 6.

The one or more programs are executed by the one or more processors 410 to cause the one or more processors to implement the transmission method of any of the embodiments described above for application to a second communication node.

The storage 420 in the second communication node is used as a computer readable storage medium, and may be used to store one or more programs, such as a software program, a computer executable program, and modules, such as program instructions/modules corresponding to the transmission method in the embodiment of the present invention (for example, the modules in the transmission device shown in fig. 4 include a configuration receiving module 410 and a signal sending module 420). The processor 410 executes various functional applications and data processing of the second communication node by running software programs, instructions and modules stored in the storage 420, i.e. implements the transmission method applied to the second communication node in the above-described method embodiment.

The storage device 420 mainly includes a storage program area and a storage data area, wherein the storage program area can store an operating system and at least one application program required by functions; the storage data area may store data created according to the use of the device, etc. (e.g., configuration information, SRS resource set, etc. in the above-described embodiments). In addition, the storage 420 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, the storage 420 may further include memory remotely located with respect to the processor 410, which may be connected to the second communication node through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

And, when one or more programs included in the second communication node are executed by the one or more processors 410, the following operations are implemented: receiving configuration information of SRS resource sets of a first communication node, wherein the SRS resource sets are used for beam management, codebook, non-codebook or antenna switching; and sending SRS according to the configuration information of the SRS resource set.

The second communication node according to the present embodiment and the transmission method applied to the second communication node according to the foregoing embodiment belong to the same inventive concept, and technical details not described in detail in the present embodiment can be seen in any of the foregoing embodiments, and the present embodiment has the same advantages as those of executing the transmission method applied to the second communication node.

Embodiments of the present application also provide a storage medium containing computer executable instructions which, when executed by a computer processor, are for performing a transmission method applied to a first communication node or to a second communication node.

From the above description of embodiments, those skilled in the art will appreciate that the present application may be implemented by software and general purpose hardware, or may be implemented by hardware. Based on such understanding, the technical solution of the present application may be embodied in a software product, where the software product may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk, or an optical disk of a computer, where the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform a method according to any embodiment of the present application.

The foregoing description is only exemplary embodiments of the application and is not intended to limit the scope of the application.

The block diagrams of any of the logic flows in the figures of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored on a memory. The memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read Only Memory (ROM), random Access Memory (RAM), optical storage devices and systems (digital versatile disk DVD or CD optical disk), etc. The computer readable medium may include a non-transitory storage medium. The data processor may be of any type suitable to the local technical environment, such as, but not limited to, general purpose computers, special purpose computers, microprocessors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), programmable logic devices (FGPAs), and processors based on a multi-core processor architecture.

The foregoing detailed description of exemplary embodiments of the application has been provided by way of exemplary and non-limiting examples. Various modifications and adaptations to the above embodiments may become apparent to those skilled in the art without departing from the scope of the application, which is defined in the accompanying drawings and claims. Accordingly, the proper scope of the application is to be determined according to the claims.

In summary, the present application at least includes the following items:

1. A transmission method, applied to a first communication node, comprising:

2. The method of item 1, the SRS resource set comprising a first resource set and a second resource set for codebook-based transmission or non-codebook-based transmission;

3. The method according to item 2, wherein bandwidths or resource block positions corresponding to the first resource set and the second resource set are the same;

4. The method according to item 2, wherein the number of SRS resources configured in the first set of resources is equal to the number of SRS resources configured in the second set of resources;

5. According to the method of item 2,

The spatial relationship information of the first resource set is the same as the spatial relationship information of the second resource set.

6. The method of item 1, the SRS resource set comprising a first resource set, a resource type of the first resource set being a periodic resource.

7. The method of item 6, further comprising:

Triggering a second communication node to send an aperiodic SRS on a target time slot through an SRS request domain of downlink control information, wherein the target time slot is a1 st effective time slot counted from a reference time slot, or is a k+1st effective time slot counted from the reference time slot, k is 0 or a positive integer, or is a k effective time slot counted from the reference time slot, and k is a positive integer;

8. The method of item 7, the active time slot comprising at least one of:

the method comprises the steps that available uplink symbols in a time slot are used for transmitting all SRS resources in an SRS resource set, and the time slot meets the minimum time requirement between a physical downlink control channel PDCCH triggering aperiodic SRS and all SRS transmissions in the SRS resource set;

9. The method of item 2, wherein the power control parameters of the first resource set configuration and the power control parameters of the second resource set configuration are the same;

10. The method according to item 9,

The difference value between the transmission power of the first resource set and the transmission power of the second resource set is a preset value, or the first communication node is configured through radio resource control signaling.

11. The method of item 2, further comprising:

And under the condition that the resource type corresponding to the first resource set is periodic resource and the resource type corresponding to the second resource set is aperiodic resource, indicating the second communication node to determine SRS resources from the nearest resource set through a scheduling request indication field in the PDCCH, wherein the nearest resource set is the first resource set or the second resource set nearest to the time slot where the PDCCH is positioned.

12. According to the method of item 1,

13. The method of item 1, further comprising:

and under the condition that a plurality of SRS resource sets are configured and the resource types of the SRS resource sets are periodic resources, the second communication node is instructed to select one SRS resource set through downlink control information or a media access control layer control unit (MAC CE) signaling, and the transmission of other SRS resource sets is stopped or canceled.

14. A transmission method applied to a second communication node, comprising:

15. The method of item 14, the SRS resource set comprising a first resource set and a second resource set for codebook-based transmission or non-codebook-based transmission;

16. According to the method of item 15,

The bandwidths or resource block positions corresponding to the first resource set and the second resource set are the same;

17. According to the method of item 15,

The second communication node expects the number of the SRS resources configured in the first resource set to be equal to the number of the SRS resources configured in the second resource set;

18. According to the method of item 15,

The second communication node expects the spatial relationship information of the first set of resources to be the same as the spatial relationship information of the second set of resources.

19. The method of item 14, the SRS resource set comprising a first resource set for codebook-based transmission or non-codebook-based transmission, the first resource set having a resource type of periodic resources.

20. The method of item 19, further comprising:

receiving trigger information;

21. The method of item 20, the active time slot comprising at least one of:

22. According to the method of item 15,

The second communication node expects the power control parameters of the first resource set configuration to be the same as the power control parameters of the second resource set configuration;

23. According to the method of item 22,

24. The method of item 15, further comprising:

receiving trigger information;

25. The method according to item 14,

26. The method of item 14, further comprising:

And under the condition that a plurality of SRS resource sets are configured and the resource types of the SRS resource sets are periodic, the first communication node instructs the second communication node to select one SRS resource set through downlink control information or MAC CE signaling and stops or cancels the transmission of other SRS resource sets.

27. A transmission apparatus comprising:

And the signal receiving module is arranged for receiving the SRS sent by the second communication node according to the SRS resource set.

28. A transmission apparatus comprising:

29. A first communication node, comprising:

One or more processors;

A storage means for storing one or more programs;

The one or more programs, when executed by the one or more processors, cause the one or more processors to implement the transmission method of any of items 1-13.

30. A second communication node, comprising:

One or more processors;

A storage means for storing one or more programs;

The one or more programs, when executed by the one or more processors, cause the one or more processors to implement the transmission method of any of items 14-26.

31. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, implements the transmission method according to any one of items 1-13 or the transmission method according to any one of items 14-26.

Claims

1. A transmission method applied to a first communication node, comprising:

configuring a sounding reference signal SRS resource set;

Receiving SRS sent by a second communication node according to the SRS resource set;

When the usage parameter of the SRS resource set is configured as a codebook, and the first communication node configures only one resource set, that is, a periodic SRS resource set, for the second communication node, the second communication node is triggered to send an aperiodic SRS resource set on a target slot through an SRS request field of downlink control information;

The target time slot is the 1 st effective time slot counted from the reference time slot, or the k+1th effective time slot counted from the reference time slot, k is 0 or a positive integer, or the k effective time slot counted from the reference time slot, and k is a positive integer; the reference time slot is a time slot corresponding to a value obtained by rounding down the product of n and a first parameter, n corresponds to a time slot triggering the aperiodic SRS, the first parameter is the ratio of mu ^SRS power of 2 to mu ^PDCCH power of 2, and mu ^SRS is the subcarrier interval configuration triggering the aperiodic SRS; mu ^PDCCH is the subcarrier spacing configuration of the PDCCH carrying the trigger information.

2. A transmission method applied to a second communication node, comprising:

Receiving configuration information of SRS resource sets of a first communication node;

sending SRS according to the configuration information of the SRS resource set;

When the usage parameter of the SRS resource set is configured as a codebook, the second communication node only configures one resource set, i.e. a periodic SRS resource set, and receives trigger information; the triggering information is indicated by the SRS request domain of the downlink control information through the first communication node and is used for triggering the second communication node to send an aperiodic SRS resource set on a target time slot;

3. A transmission apparatus, comprising:

the configuration module is configured to configure a sounding reference signal SRS resource set;

The signal receiving module is arranged to receive SRS sent by the second communication node according to the SRS resource set;

4. A transmission apparatus, comprising:

the signal transmission module is arranged to transmit SRS according to the configuration information of the SRS resource set;

5. A first communication node, comprising:

One or more processors;

A storage means for storing one or more programs;

when executed by the one or more processors, causes the one or more processors to implement the transmission method as recited in claim 1.

6. A second communication node, comprising:

One or more processors;

A storage means for storing one or more programs;

When executed by the one or more processors, causes the one or more processors to implement the transmission method of claim 2.

7. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the transmission method as claimed in claim 1 or the transmission method as claimed in claim 2.