CN110149186A

CN110149186A - A kind of channel state information measurement and device

Info

Publication number: CN110149186A
Application number: CN201810150977.XA
Authority: CN
Inventors: 李辉; 陈润华; 高秋彬; 拉盖施
Original assignee: Telecommunications Science and Technology Research Institute Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-02-13
Filing date: 2018-02-13
Publication date: 2019-08-20
Anticipated expiration: 2038-02-13
Also published as: CN110149186B

Abstract

The present invention relates to the communications field, a kind of channel state information measurement and device are disclosed, to guarantee the precision and flexibility ratio of interference measurement.This method are as follows: base station is directed to each CSI-RS port set for including for the non-zero power CSI-RS resource of interference measurement, independently configure the port parameter of each CSI-RS port set, wherein, it include at least one port CSI-RS in one CSI-RS port set, in this way, different interference scenes can be directed to, the adaptable port parameter of configuration carries out interference measurement, both the precision and accuracy of interference measurement ensure that, improve the flexibility of interference measurement, the expense for effectively reducing CSI-RS resource again, alleviates system loading.

Description

Channel state information measuring method and device

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for measuring channel state information.

Background

In a 5G system, when a User Equipment (UE) measures channel state information based on a New Radio (NR), a Channel Measurement Resource (CMR) and an Interference Measurement Resource (IMR) need to be used for channel measurement and interference measurement, respectively. The CMR uses a non-zero power (CSI-RS) resource, the IMR uses a zero power CSI-RS resource, and for aperiodic CSI reporting, the non-zero power CSI-RS resource can be used as the IMR at the same time.

As shown in fig. 1 in particular, at each aperiodic CSI report, 3 resource configurations may be associated, that is, configuring a non-zero power CSI-RS resource for channel measurement, configuring a zero power CSI-RS for interference measurement, and configuring a non-zero power CSI-RS resource for interference measurement.

Each resource configuration comprises one or more CSI-RS resource groups, each CSI-RS resource group comprises one or more CSI-RS resources, and each non-zero power CSI-RS resource comprises one or more CSI ports. The two IMRs are respectively used for measuring interference (zero-power CSI-RS resources) of an adjacent cell to a target UE, and for measuring interference (non-zero-power CSI-RS resources) of other UEs, which are planned to be paired with the target UE, of the local cell to the target UE during multi-user transmission.

For an aperiodic CSI report, only one resource group is used in each resource configuration when performing channel state measurement. For example, when performing channel state measurements (including channel measurements and interference measurements), non-zero power CSI-RS resource group 3 in the CMR, zero power CSI-RS resource group 1 in the IMR, and non-zero power CSI-RS resource group 0 in the IMR may be used for measurements.

In the prior art, for a non-zero power CSI-RS resource group of the CMR, each resource group may include one or more CSI-RS resources, and for a zero power CSI-RS resource group of the IMR, each resource group may also include one or more CSI-RS resources, and for a non-zero power CSI-RS resource group of the IMR, each resource group may include only one CSI-RS resource, considering overhead of CSI-RS resources and precision of Multi-User Multiple-Input Multiple-Output (MU-MIMO) interference measurement.

However, in the NR system, only one set of resource parameters is designed for the non-zero power CSI-RS resource group of the IMR, which is used for all CSI-RS ports of the non-zero power CSI-RS resource, thereby limiting the flexibility of interference measurement on a large program and reducing the accuracy of interference measurement.

Disclosure of Invention

The embodiment of the invention provides a port parameter configuration method, an interference measurement method and an interference measurement device, which are used for ensuring the accuracy and the flexibility of interference measurement.

The embodiment of the invention provides the following specific technical scheme:

a channel state information measurement method, comprising:

configuring a first channel state information reference signal (CSI-RS) resource for a target terminal, wherein the first CSI-RS resource is a non-zero power number (CSI-RS) resource for interference measurement;

determining a CSI-RS port set contained in the first CSI-RS resource, and dividing the CSI-RS port set into a plurality of CSI-RS port groups, wherein one CSI-RS port group contains at least one CSI-RS port;

and aiming at the target terminal, corresponding to each CSI-RS port group in the first CSI-RS resource, independently configuring corresponding port parameters, and triggering the target terminal to use the first CSI-RS resource to perform interference measurement.

Optionally, dividing the CSI-RS port set into a plurality of CSI-RS port groups, where one CSI-RS port group includes at least one CSI-RS port, includes:

respectively taking each CSI-RS port as a CSI-RS port group; or,

based on a Code Division Multiplexing (CDM) mode of the CSI-RS ports, the CSI-RS ports contained in every N CDM groups are respectively used as one CSI-RS port group, wherein one CDM group contains at least two CSI-RS ports, and N is more than or equal to 1.

Optionally, for the target terminal, separately configuring, for each CSI-RS port group in the first CSI-RS resource, a corresponding port parameter, where the configuring includes:

and configuring a group of resource parameters and a plurality of groups of port parameters corresponding to the first CSI-RS resource aiming at the target terminal, wherein the resource parameters are shared by all CSI-RS port groups in the first CSI-RS resource, and the port parameters are respectively and independently configured aiming at all the CSI-RS port groups contained in the first CSI-RS resource.

Optionally, configuring a group of resource parameters and a plurality of groups of port parameters corresponding to the first CSI-RS resource includes:

determining a preset resource configuration parameter set;

selecting a part of parameters from the resource configuration parameter set to configure the parameters as the port parameters, wherein the port parameters comprise one or any combination of power parameters, port density, frequency domain distribution and sequence scrambling code Identification (ID);

and configuring other parameters except for parameters for configuring ports in the resource configuration parameter set as the resource parameters.

Optionally, further comprising:

configuring at least one second CSI-RS resource for the target terminal, wherein the second CSI-RS resource is a non-zero power number CSI-RS resource used for channel measurement; and/or the first and/or second light sources,

configuring at least one third CSI-RS resource for the target terminal, wherein the third CSI-RS resource is a zero-power CSI-RS resource for interference measurement.

A channel state information measuring method is applied to a 5G system and comprises the following steps:

determining a first channel state information reference signal (CSI-RS) resource configured on a network side and a CSI-RS port set contained in the first CSI-RS resource, wherein the first CSI-RS resource is a non-zero power number (nonzero power number) CSI-RS resource used for interference measurement, and the CSI-RS port set is divided into a plurality of CSI-RS port groups;

and performing interference measurement by adopting the first CSI-RS resource with port parameters independently configured corresponding to each CSI-RS port group on a network side, wherein one CSI-RS port group comprises at least one CSI-RS port.

Optionally, each CSI-RS port is respectively used as a CSI-RS port group; or,

according to a Code Division Multiplexing (CDM) mode of CSI-RS ports, the CSI-RS ports contained in every N CDM groups are respectively used as one CSI-RS port group, wherein one CDM group contains at least two CSI-RS ports, and N is larger than or equal to 1.

Optionally, the performing interference measurement by using the first CSI-RS resource in which a network side has independently configured port parameters corresponding to each CSI-RS port group includes:

and carrying out interference measurement aiming at a corresponding paired terminal by adopting port parameters which are independently configured by a network side corresponding to each CSI-RS port group in the first CSI-RS resource and referring to resource parameters which are uniformly configured by the network side corresponding to each CSI-RS port group in the first CSI-RS resource.

Optionally, the port parameter is a part of parameters selected from a preset resource configuration parameter set, and includes one or any combination of a power parameter, a port density, a frequency domain distribution, and a sequence scrambling identifier ID;

the resource parameters are other parameters except the port parameters in the resource configuration parameter set.

Optionally, further comprising:

performing channel measurement by adopting at least one second CSI-RS resource configured on a network side, wherein the second CSI-RS resource is a non-zero power number CSI-RS resource used for channel measurement; or/and

and performing interference measurement by adopting at least one third CSI-RS resource configured at the network side, wherein the third CSI-RS resource is a zero-power CSI-RS resource for interference measurement.

A channel state measuring device is applied to a 5G system and comprises:

the first configuration unit is used for configuring a first channel state information reference signal (CSI-RS) resource for a target terminal, wherein the first CSI-RS resource is a non-zero power number (CSI-RS) resource for interference measurement;

the dividing unit is used for determining a CSI-RS port set contained in the first CSI-RS resource and dividing the CSI-RS port set into a plurality of CSI-RS port groups, wherein one CSI-RS port group contains at least one CSI-RS port;

and a second configuration unit, configured to configure, for the target terminal, corresponding to each CSI-RS port group in the first CSI-RS resource, a corresponding port parameter independently, and trigger the target terminal to perform interference measurement using the first CSI-RS resource.

Optionally, the CSI-RS port set is divided into a plurality of CSI-RS port groups, where when one CSI-RS port group includes at least one CSI-RS port, the dividing unit is configured to:

respectively taking each CSI-RS port as a CSI-RS port group; or,

Optionally, when, for the target terminal, respectively configuring, for each CSI-RS port group in the first CSI-RS resource, a corresponding port parameter independently, the second configuration unit is configured to:

Optionally, when a group of resource parameters and several groups of port parameters are configured corresponding to the first CSI-RS resource, the second configuration unit is configured to:

determining a preset resource configuration parameter set;

Optionally, the second configuration unit is further configured to:

A channel state measuring device is applied to a 5G system and comprises:

the device comprises a determining unit and a processing unit, wherein the determining unit is used for determining a first channel state information reference signal (CSI-RS) resource configured by a network side and a CSI-RS port set contained in the first CSI-RS resource, the first CSI-RS resource is a non-zero power number (nonzero-power number) CSI-RS resource used for interference measurement, and the CSI-RS port set is divided into a plurality of CSI-RS port groups;

and the measurement unit is used for performing interference measurement by adopting the CSI-RS resource with the port parameters independently configured corresponding to each CSI-RS port group on the network side, wherein one CSI-RS port group comprises at least one CSI-RS port.

Optionally, the determining unit is configured to:

taking each CSI-RS port as a CSI-RS port group respectively; or,

Optionally, when the first CSI-RS resource with port parameters configured independently for each CSI-RS port group on the network side is used to perform interference measurement, the measurement unit is configured to:

Optionally, the measurement unit is further configured to:

A base station, for use in a 5G system, comprising at least a processor, wherein,

the processor is used for reading the program in the memory and executing the following processes:

Optionally, the CSI-RS port set is divided into a plurality of CSI-RS port groups, where, when one CSI-RS port group includes at least one CSI-RS port, the processor is configured to:

respectively taking each CSI-RS port as a CSI-RS port group; or,

Optionally, when, for the target terminal, respectively configuring corresponding port parameters for each CSI-RS port group in the first CSI-RS resource, the processor is configured to:

Optionally, when a group of resource parameters and several groups of port parameters are configured corresponding to the first CSI-RS resource, the processor is configured to:

determining a preset resource configuration parameter set;

Optionally, the processor is further configured to:

A target terminal is applied to a 5G system and at least comprises a processor and a transceiver:

a processor for reading the program in the memory, performing the following processes:

the first CSI-RS resource with port parameters independently configured corresponding to each CSI-RS port group at a network side is adopted for interference measurement, wherein one CSI-RS port group comprises at least one CSI-RS port;

a transceiver for receiving and transmitting data under the control of the processor.

Optionally, the processor is specifically configured to:

taking each CSI-RS port as a CSI-RS port group respectively; or,

Optionally, the processor is configured to, when performing interference measurement, use the first CSI-RS resource in which a network side has independently configured port parameters corresponding to each CSI-RS port group:

Optionally, the processor is further configured to:

performing channel measurement by adopting at least one second CSI-RS resource configured on a network side, wherein the second CSI-RS resource is a non-zero power number CSI-RS resource used for channel measurement; and/or the first and/or second light sources,

A storage medium storing a program for implementing configuration of port parameters, the program, when executed by a processor, performing the steps of:

A storage medium storing a program for implementing interference measurement, the program, when executed by a processor, performing the steps of:

The invention has the following beneficial effects:

in summary, in the embodiment of the present invention, a base station configures, for each CSI-RS port group included in a non-zero power CSI-RS resource for interference measurement, port parameters of each CSI-RS port group independently, where one CSI-RS port group includes at least one CSI-RS port, so that it is possible to configure, for different interference scenarios, adaptive port parameters for interference measurement, which not only ensures accuracy and precision of interference measurement and improves flexibility of interference measurement, but also effectively reduces overhead of CSI-RS resources and reduces system load.

Drawings

Fig. 1 is a schematic diagram of a resource allocation method in aperiodic CSI measurement according to an embodiment of the present invention;

FIG. 2 is a schematic diagram illustrating a flow of configuration of port parameters at a network side according to an embodiment of the present invention;

fig. 3 is a schematic diagram illustrating a flow of interference measurement performed by a target terminal according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating CDM group division according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a base station logic function structure according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a logical function structure of a target terminal according to an embodiment of the present invention;

FIG. 7 is a functional block diagram of a base station according to an embodiment of the present invention;

fig. 8 is a functional structure diagram of a target terminal entity in the embodiment of the present invention.

Detailed Description

In order to ensure the accuracy and the flexibility of interference measurement, in each measurement process, one non-zero power CSI-RS resource is adopted for interference measurement, and the non-zero power CSI-RS resource comprises a plurality of groups of port parameters besides a group of shared resource parameters, wherein the port parameters used by different CSI-RS port groups of the non-zero power CSI-RS resource are configured independently, and one CSI-RS port group comprises at least one CSI-RS port.

Preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 2, in the embodiment of the present invention, a detailed flow of the base station performing port parameter configuration is as follows:

step 200: the base station configures a first CSI-RS resource for a target terminal, wherein the first CSI-RS resource is a non-zero power number CSI-RS resource for interference measurement.

In practical application, a base station needs to configure different zero power CSR-RS resources and non-zero power CSR-RS resources for different terminals, for convenience of description, in the embodiment of the present invention, only one target terminal is taken as an example for introduction, and the described technical solution is also applicable to all terminals in a 5G system, and is not described herein again.

In addition to configuring the first CSI-RS resource, the base station needs to configure at least one (one or more) second CSI-RS resource for the target terminal, where the second CSI-RS resource is a non-zero power number CSI-RS resource for channel measurement; or/and the base station can configure at least one (one or more) third CSI-RS resource for the target terminal, wherein the third CSI-RS resource is a zero-power CSI-RS resource for interference measurement.

In the embodiment of the present invention, the configuration and the use manner of the first CSI-RS resource are mainly described, and therefore, the relevant contents of the second CSI-RS resource and the third CSI-RS resource will be briefly described.

Step 210: the base station determines a CSI-RS port set contained in the first CSI-RS resource, and divides the CSI-RS port set into a plurality of CSI-RS port groups, wherein one CSI-RS port group contains at least one CSI-RS port.

Specifically, when step 210 is executed, the following two ways may be adopted, but not limited to:

the first mode is as follows: the base station respectively takes each CSI-RS port as a CSI-RS port group, so that the base station can respectively and independently set corresponding port parameters aiming at different CSI-RSs.

The second way is: the base station respectively takes the CSI-RS ports contained in every N CDM groups as one CSI-RS port group based on a Code Division Multiplexing (CDM) mode of the CSI-RS ports, wherein one CDM group contains at least two CSI-RS ports, and N is larger than or equal to 1.

Step 220: and the base station respectively corresponds to each CSI-RS port group in the first CSI-RS resource aiming at the target terminal, independently configures corresponding port parameters, and triggers the target terminal to use the first CSI-RS resource to carry out interference measurement.

Specifically, a base station configures a group of resource parameters and a plurality of groups of port parameters corresponding to a first CSI-RS resource for a target terminal, wherein the resource parameters are shared by each CSI-RS port group in the first CSI-RS resource, and the port parameters are configured independently for each CSI-RS port group included in the first CSI-RS resource.

When the base station configures a group of resource parameters and a plurality of groups of port parameters corresponding to the first CSI-RS resource, a preset resource configuration parameter set is determined; selecting a part of parameters from the resource configuration parameter set to configure the parameters as the port parameters, and configuring other parameters except for the parameters for configuring the port parameters in the resource configuration parameter set as the resource parameters.

Optionally, the port parameter includes one or any combination of a power parameter, a port density, a frequency domain distribution, and a sequence scrambling code identifier ID, and a parameter that is not adopted by the port parameter in the resource configuration parameter set, such as a port number, a resource periodicity, a resource time-frequency location, a CSI-RS frequency domain density, and the like, may be used as the resource parameter.

Further, when the base station configures port parameters for a target terminal, the port parameters of different CSI-RS port groups are used for performing interference measurement for interference of paired terminals in different application scenarios, where the paired terminals are: when the base station plans to use the terminal to perform multi-user transmission with the target terminal, the interference of one data stream of one paired terminal corresponds to one CSI-RS port.

Specifically, the base station may configure the target terminal, and perform interference measurement on interference from paired terminals of different antenna panels (panels) or Transmission-Reception points (TRPs) by using ports corresponding to different CSI-RS port groups, where interference of one data stream of one paired terminal corresponds to one CSI-RS port.

For example, optionally, one CSI-RS port group includes one CSI-RS port, and it is assumed that each paired terminal includes one data stream, interference of one data stream of one paired terminal corresponds to one CSI-RS port, and interference of each paired terminal is from a different TRP. The base station configures corresponding port parameters for different CSI-RS ports independently. Then, the target terminal uses different CSI-RS ports for interference measurement for interference from paired terminals of different antenna panels or transceiving points.

Specifically, the base station may also configure the target terminal, and perform interference measurement using ports corresponding to the same CSI-RS port group for interference from one or more paired terminals of the same antenna panel or transceiving point, where interference of one data stream of one paired terminal corresponds to one CSI-RS port.

For example, optionally, one CSI-RS port group includes at least two CSI-RS ports, and assuming that there are multiple paired terminals, each paired terminal includes one data stream, and interference of the multiple paired terminals comes from the same TRP, interference corresponding to the multiple data streams of the multiple paired terminals may correspond to one CSI-RS port group. The base station configures corresponding port parameters for different CSI-RS port groups independently. Then the target terminal uses the ports of a certain CSI-RS port group for interference measurement with respect to interference from paired terminals of the same antenna panel or transceiving point.

Correspondingly to the above embodiment, referring to fig. 3, in the embodiment of the present invention, based on the port parameters of each CSI-RS port group configured by the base station, a detailed flow of the target terminal performing interference measurement is as follows:

step 300: the method comprises the steps that a target terminal determines a first CSI-RS resource configured by a base station and a CSI-RS port set contained in the first CSI-RS resource, the first CSI-RS resource is a non-zero power number CSI-RS resource used for interference measurement, and the CSI-RS port set is divided into a plurality of CSI-RS port groups.

In addition to determining the first CSI-RS resource, the target terminal needs to determine at least one (one or more) second CSI-RS resource configured by the base station, where the second CSI-RS resource is a non-zero power number CSI-RS resource for channel measurement; or/and in addition, at least one (one or more) third CSI-RS resource configured by the base station can be determined, wherein the third CSI-RS resource is a zero-power CSI-RS resource for interference measurement.

Step 310: and the target terminal carries out interference measurement by adopting the first CSI-RS resource with the port parameters independently configured corresponding to each CSI-RS port group by the base station, wherein one CSI-RS port group comprises at least one CSI-RS port.

Specifically, the target terminal may configure different CSI-RS port groups for interference from paired terminals of different antenna panels or transceiving points, and independently configure corresponding port parameters, and perform interference measurement using ports in the CSI-RS port groups; or/and configuring port parameters corresponding to the same CSI-RS port group for interference measurement aiming at interference from paired terminals of the same antenna panel or transceiving point; one data stream of one paired terminal corresponds to one CSI-RS port. This is already described in the description of the base station side and will not be described further.

Optionally, the port parameter corresponding to the CSI-RS port group includes one or any combination of a power parameter, a port density, a frequency domain distribution, and a sequence scrambling identifier ID.

Furthermore, the target terminal performs interference measurement by using one first CSI-RS resource configured by the base station to obtain a first interference measurement result, and the target terminal also performs channel measurement by using at least one second CSI-RS resource configured by the base station to obtain a channel measurement result; or/and interference measurement can be carried out by adopting at least one third CSI-RS resource configured by the base station, so as to obtain a second interference measurement result.

And then, calculating to obtain a channel state measurement result based on the first interference measurement result, the channel measurement result and a second interference measurement result obtained by the third CSI-RS resource, and feeding back the channel state measurement result to the base station.

The above embodiments are described in further detail below using two specific application scenarios.

The application scene one:

in the MU-MIMO scenario, interference power of different paired terminals is different when interference from different panels or TRPs is assumed. Meanwhile, each paired terminal is assumed to adopt one data stream transmission, that is, interference of one data stream of one paired terminal corresponds to one CSI-RS port. Thus, when the first CSI-RS resource is used for interference measurement, each CSI-RS port needs to be configured with different transmission power (one of power parameters).

Still taking fig. 1 as an example, it is assumed that each non-zero-power CSI-RS resource group configured by the base station for performing channel measurement includes K1 non-zero-power CSI-RS resources, that is, one non-zero-power CSI-RS resource group for CMR includes K1 second CSI-RS resources, and meanwhile, each zero-power CSI-RS resource group configured by the base station for performing interference measurement includes K2 zero-power CSI-RS resources, that is, one zero-power CSI-RS resource group for IMR includes K2 third CSI-RS resources, where K1 second CSI-RS resources and K2 third CSI-RS resources are in one-to-one correspondence.

Meanwhile, each non-zero-power CSI-RS resource group configured for interference measurement by the base station end includes 1 non-zero-power CSI-RS resource, that is, one zero-power CSI-RS resource group for IMR includes one first CSI-RS, wherein for any one CSI-RS resource group (hereinafter referred to as resource group s) including the first CSI-RS resource, assuming that one first CSI-RS resource included in the resource group s includes Ms CSI-RS ports, it can be considered that the first CSI resource is divided into Ms CSI-RS port groups, and one CSI-RS port group includes one CSI-RS port.

Then, for the Resource group s selected for IMR, the base station configures Ms values of Pc, where Pc is one of the power parameters, and Pc represents a ratio of the transmit power of one Resource Element (RE) occupied by the PDSCH to the transmit power of one RE occupied by the CSI-RS resources of the Ms CSI-RS ports in the Resource group s. For other parameters such as port density, frequency domain distribution, sequence scrambling code ID and the like, the base station adopts uniform parameter configuration for Ms ports; i.e. the port parameters include only Pc values, while the resource parameters include port density, frequency domain distribution and sequence scrambling code ID, etc.

Then, referring to fig. 1, it is assumed that the base station triggers a non-zero power CSI-RS resource group 3 (including one or more second CSI-RS resources) to perform channel measurement, uses a zero power CSI-RS resource group 1 (including one or more third CSI-RS resources) to perform interference measurement, and uses a non-zero power CSI-RS resource group 0 (including one first CSI-RS resource) to perform interference measurement.

For the non-zero power CSI-RS resource group 0 (i.e., resource group S) used for interference measurement, the group includes M0(Ms 0) CSI-RS ports, each of which corresponds to interference of one paired terminal.

The base station can configure the values of M0 Pc to be all different, partially the same, or completely the same.

Correspondingly, the target terminal determines, according to the Reference Signal Receiving Power (RSRP) of the K1 second CSI-RS resources included in the non-zero-Power CSI-RS resource group 3, the K 'second CSI-RS resources with the largest RSRP value to be used for channel measurement, obtains a channel measurement result, and selects, from the K2 third CSI-RS resources included in the zero-Power CSI-RS resource group 1, the corresponding K' third CSI-RS resources to be used for interference measurement, and obtains a second interference measurement result. Meanwhile, M0 port parameters (M0 Pc values) of a first CSI-RS resource configured at the base station end and resource parameters of the first CSI-RS resource are received, and M0 CSI-RS ports in a non-zero power CSI-RS resource group 0 are used for respectively carrying out interference measurement on different paired terminals to obtain a second interference measurement result.

And finally, the target terminal calculates a channel state measurement result according to the channel measurement result, the first interference measurement result and the second interference measurement result, and feeds back the channel state measurement result to the base station, wherein the channel state measurement result may include a Rank Indication (RI), a Precoding Matrix Indication (PMI) and a Channel Quality Indication (CQI).

Application scenario two:

in the MU-MIMO scenario, assuming that interference of a part of paired terminals comes from the same panel or TRP and interference power thereof is the same, CSI-RS ports corresponding to the paired terminals may belong to the same CSI-RS port group and use the same port configuration.

Still taking fig. 1 as an example, it is assumed that the base station assumes that each non-zero-power CSI-RS resource group configured by the base station for performing channel measurement includes K1 non-zero-power CSI-RS resources, that is, one non-zero-power CSI-RS resource group for CMR includes K1 second CSI-RS resources, and meanwhile, each zero-power CSI-RS resource group configured by the base station for performing interference measurement includes K2 zero-power CSI-RS resources, that is, one zero-power CSI-RS resource group for IMR includes K2 third CSI-RS resources, where K1 second CSI-RS resources and K2 third CSI-RS resources are in one-to-one correspondence.

Meanwhile, each non-zero-power CSI-RS resource group configured for interference measurement by the base station end includes 1 non-zero-power CSI-RS resource, that is, one zero-power CSI-RS resource group for IMR includes one first CSI-RS, wherein for any one CSI-RS resource group (hereinafter referred to as resource group s) including the first CSI-RS resource, it is assumed that one first CSI-RS resource included in the resource group s includes Ms CSI-RS ports, and the Ms ports can be divided into Ts CSI-RS port groups.

Optionally, the base station may group the CSI-RS ports based on a CDM manner.

For example, referring to fig. 4, fig. 4 shows a pattern of 12-port CSI-RS resources with CDM-2 multiplexing. Wherein, 6 CDM groups are included, and each CDM group comprises two CSI-RS ports. For interference measurement, each CDM group may be divided into one CSI-RS port group, or a plurality of CDM groups may be divided into one CSI-RS port group.

For example, assuming that 6 CSI-RS port groups are partitioned, CSI-RS port group 0 includes CDM group 0, CSI-RS port group 1 includes CDM group 1, CSI-RS port group 2 includes CDM group 2, CSI-RS port group 3 includes CDM group 3, CSI-RS port group 4 includes CDM group 4, and CSI-RS port group 5 includes CDM group 5.

As another example, assuming that 2 CSI-RS port groups are divided, CSI-RS port group 0 includes respective CSI-RS ports in CDM group 0, CDM group 1, and CDM group 2, and CSI-RS port group 1 includes CSI-RS ports in CDM group 3, CDM group 4, and CDM group 5.

Then, the base station configures corresponding Ts Pc values and Ts sequence scrambling ID for Ts CSI-RS port groups. For other parameters such as port density, frequency domain distribution and the like, the base station adopts uniform parameter configuration for Ms ports in the Ts CSI-RS port groups; that is, the port parameters only include Pc values and sequence scrambling code IDs, and the resource parameters include port density, frequency domain distribution, and the like.

Then, referring to fig. 2, it is assumed that the base station triggers triggering of non-zero-power CSI-RS resource group 3 (including one or more second CSI-RS resources) for channel measurement, zero-power CSI-RS resource group 1 (including one or more third CSI-RS resources) for interference measurement, and non-zero-power CSI-RS resource group 0 (including one first CSI-RS resource) for interference measurement.

For the non-zero power CSI-RS resource group 0 (i.e., resource group S) used for interference measurement, the group includes M0(Ms 0) CSI-RS ports, each of which corresponds to interference of one data stream of one paired terminal. Meanwhile, the interference of the paired terminals which need to be configured in the same panel or TRP transmission corresponds to the ports in the same CSI-RS port group.

For example, assume that there are 6 paired terminals (UE 0-UE 5), and each paired terminal employs 2 data stream transmission, that is, interference of one paired terminal corresponds to 2 CSI-RS ports, where interference of paired terminals UE 0-UE 2 comes from TRP1, and interference of paired terminals UE 3-UE 5 comes from TRP 2.

Assuming that Ts is T0 is 2, in the non-zero power CSI-RS resource group, the CSI-RS port group 0 includes CSI-RS ports 0 to 5, and the CSI-RS port group 1 includes CSI-RS ports 6 to 11, then interference of 6 data streams of 3 paired terminals (UE0 to UE2) based on TRP1 transmission corresponds to CSI-RS ports 0 to 5, and interference of 6 data streams of 3 paired terminals (UE3 to UE5) based on TRP2 transmission corresponds to CSI-RS ports 6 to 11.

The base station CSI-RS ports 0-5 and 6-11 are respectively configured with different Pc values and sequence scrambling code IDs, wherein the T0 Pc values configured at the base station end can be all different or partially identical or completely identical.

Correspondingly, the target terminal determines the K 'th second CSI-RS resource with the largest RSRP value to be used for channel measurement according to the Reference Signal Receiving Power (RSRP) of the K1 second CSI-RS resources included in the non-zero-Power CSI-RS resource group 3, so as to obtain a channel measurement result, and selects the corresponding K' th third CSI-RS resource to be used for interference measurement from the K2 third CSI-RS resources included in the zero-Power CSI-RS resource group 1, so as to obtain a second interference measurement result. Meanwhile, T0 port parameters (T0 Pc values) of the first CSI-RS resource and resource parameters of the first CSI-RS resource configured by the base station end are received, and M0 CSI-RS ports in T0 CSI-RS port groups in the non-zero power CSI-RS resource group 0 are used for interference measurement to obtain a second interference measurement result.

And finally, the target terminal calculates a channel state measurement result according to the channel measurement result, the first interference measurement result and the second interference measurement result, and feeds back the channel state measurement result to the base station, wherein the channel state measurement result can comprise RI, PMI and CQI.

Based on the above embodiments, referring to fig. 5, in the embodiment of the present invention, the base station at least includes a first configuration unit 50, a dividing unit 51, and a second configuration unit 52, wherein,

a first configuration unit 50, configured to configure a first CSI-RS resource for a target terminal, where the first CSI-RS resource is a non-zero power number CSI-RS resource for interference measurement;

the dividing unit 51 is configured to determine a CSI-RS port set included in the first CSI-RS resource, and divide the CSI-RS port set into a plurality of CSI-RS port groups, where one CSI-RS port group includes at least one CSI-RS port;

a second configuration unit 52, configured to configure, for the target terminal, corresponding to each CSI-RS port group in the first CSI-RS resource, a corresponding port parameter independently, and trigger the target terminal to perform interference measurement using the first CSI-RS resource.

Optionally, the CSI-RS port set is divided into a plurality of CSI-RS port groups, where when one CSI-RS port group includes at least one CSI-RS port, the dividing unit 51 is configured to:

respectively taking each CSI-RS port as a CSI-RS port group; or,

Optionally, when, for the target terminal, separately configure corresponding port parameters for each CSI-RS port group in the first CSI-RS resource, the second configuration unit 52 is configured to:

Optionally, when a group of resource parameters and several groups of port parameters are configured corresponding to the first CSI-RS resource, the second configuration unit 52 is configured to:

determining a preset resource configuration parameter set;

Optionally, the second configuration unit 52 is further configured to:

Based on the above embodiments, referring to fig. 6, in an embodiment of the present invention, a target terminal at least includes a determining unit 60 and a measuring unit 61, wherein,

the determining unit 60 is configured to determine a first CSI-RS resource configured on a network side and a CSI-RS port set included in the first CSI-RS resource, where the first CSI-RS resource is a non-zero power number CSI-RS resource used for interference measurement, and the CSI-RS port set is divided into a plurality of CSI-RS port groups;

and the measurement unit 61 is configured to perform interference measurement by using the first CSI-RS resource in which port parameters are independently configured for each CSI-RS port group on the network side, where one CSI-RS port group includes at least one CSI-RS port.

Optionally, the determining unit 60 is configured to:

taking each CSI-RS port as a CSI-RS port group respectively; or,

Optionally, when the first CSI-RS resource with port parameters configured independently for each CSI-RS port group on the network side is used to perform interference measurement, the measurement unit 61 is configured to:

Optionally, the measurement unit 61 is further configured to:

Referring to fig. 7, based on the same inventive concept, a base station for a 5G system is provided, which includes at least a processor 700, wherein,

the processor 700 is configured to read a program in the memory, and execute the following processes:

Where in fig. 7, the bus architecture may include any number of interconnected buses and bridges, with various circuits of memory represented by the memory and one or more processors represented by processor 700 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver may be a plurality of elements, i.e., including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 700 is responsible for managing the bus architecture and general processing, and the memory may store data used by the processor 700 in performing operations.

Optionally, the CSI-RS port set is divided into a plurality of CSI-RS port groups, where when one CSI-RS port group includes at least one CSI-RS port, the processor 700 is configured to:

respectively taking each CSI-RS port as a CSI-RS port group; or,

Optionally, for the target terminal, when the corresponding port parameter is configured independently for each CSI-RS port group in the first CSI-RS resource, the processor 700 is configured to:

Optionally, when a set of resource parameters and a plurality of sets of port parameters are configured for the first CSI-RS resource, the processor 700 is configured to:

determining a preset resource configuration parameter set;

Optionally, the processor 700 is further configured to:

Referring to fig. 8, based on the same inventive concept, a target terminal is provided, which is applied to a 5G system and includes at least a processor 800 and a transceiver 810:

a processor 800 for reading the program in the memory, and executing the following processes:

the method comprises the steps that a first CSI-RS resource with port parameters independently configured corresponding to each CSI-RS port group at a network side is adopted for interference measurement, wherein one CSI-RS port group comprises at least one CSI-RS port;

the transceiver 810: for receiving and transmitting data under the control of processor 800.

Where in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with various circuits of memory represented by the memory and one or more processors represented by the processor 800 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 810 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 800 is responsible for managing the bus architecture and general processing, and the memory may store data used by the processor 800 in performing operations.

Optionally, the processor 800 is specifically configured to:

taking each CSI-RS port as a CSI-RS port group respectively; or,

Optionally, when performing interference measurement by using a first CSI-RS resource in which a network side has independently configured port parameters corresponding to each CSI-RS port group, the processor 800 is configured to:

Optionally, the processor 800 is further configured to:

Based on the same inventive concept, there is provided a storage medium storing a program for implementing configuration of port parameters, the program, when executed by a processor, performing the steps of:

Based on the same inventive concept, there is provided a storage medium storing a program for implementing interference measurement, the program, when executed by a processor, performing the steps of:

and performing interference measurement by adopting a first CSI-RS resource with port parameters independently configured corresponding to each CSI-RS port group on a network side, wherein one CSI-RS port group comprises at least one CSI-RS port.

In summary, in the embodiment of the present invention, a base station configures, for each CSI-RS port included in a non-zero power CSI-RS resource for interference measurement, port parameters of each CSI-RS port group independently, where one CSI-RS port group includes at least one CSI-RS port, so that it is possible to configure, for paired terminals of different interference types, an appropriate port parameter for interference measurement, which not only ensures accuracy and precision of interference measurement, improves flexibility of interference measurement, but also effectively reduces overhead of CSI-RS resources, and reduces system load.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

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

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

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

Claims

1. A method for measuring channel state information, comprising:

2. The method of claim 1, wherein dividing the set of CSI-RS ports into a number of CSI-RS port groups, wherein one CSI-RS port group contains at least one CSI-RS port, comprises:

respectively taking each CSI-RS port as a CSI-RS port group; or,

3. The method of claim 1, wherein independently configuring, for the target terminal, a corresponding port parameter for each CSI-RS port group in the first CSI-RS resource, respectively, comprises:

4. The method of claim 3, wherein configuring a set of resource parameters and a number of sets of port parameters corresponding to the first CSI-RS resource comprises:

determining a preset resource configuration parameter set;

5. The method of any one of claims 1-4, further comprising:

6. A channel state information measurement method is applied to a 5G system and comprises the following steps:

7. The method of claim 6, wherein each CSI-RS port is respectively treated as one CSI-RS port group; or,

8. The method of claim 6, wherein performing interference measurement using the first CSI-RS resource with a port parameter configured independently for each CSI-RS port group on a network side comprises:

and based on the port parameters which are independently configured on the network side corresponding to each CSI-RS port group in the first CSI-RS resource, the interference measurement is carried out by referring to the resource parameters which are uniformly configured on the network side corresponding to each CSI-RS port group in the first CSI-RS resource.

9. The method according to any one of claims 6 to 8, wherein the port parameter is a part of parameters selected from a preset resource configuration parameter set, and includes one or any combination of a power parameter, a port density, a frequency domain distribution, and a sequence scrambling code identification ID;

10. The method of claim 9, further comprising:

11. A channel state measuring device is applied to a 5G system and comprises:

12. A channel state measuring device is applied to a 5G system and comprises:

and the measurement unit is used for performing interference measurement by adopting the first CSI-RS resource with port parameters independently configured corresponding to each CSI-RS port group on the network side, wherein one CSI-RS port group comprises at least one CSI-RS port.

13. A base station, for use in a 5G system, comprising at least a processor, wherein,

14. The base station of claim 13, wherein the set of CSI-RS ports is divided into CSI-RS port groups, wherein when a CSI-RS port group contains at least one CSI-RS port, the processor is configured to:

respectively taking each CSI-RS port as a CSI-RS port group; or,

15. The base station according to claim 13 or 14, wherein, when, for the target terminal, the corresponding port parameter is configured independently for each CSI-RS port group in the first CSI-RS resource, the processor is configured to:

16. The base station of claim 15, wherein when a set of resource parameters and a number of sets of port parameters are configured for the first CSI-RS resource, the processor is configured to:

determining a preset resource configuration parameter set;

17. The base station of claim 13 or 14, wherein the processor is further configured to:

18. A target terminal, for use in a 5G system, comprising at least a processor and a transceiver:

a transceiver: for receiving and transmitting data under control of the processor.

19. The target terminal of claim 18, wherein the processor is further configured to:

taking each CSI-RS port as a CSI-RS port group respectively; or,

20. The target terminal of claim 18 or 19, wherein when performing interference measurement, the processor is configured to:

and carrying out interference measurement by adopting port parameters which are independently configured by a network side corresponding to each CSI-RS port group in the first CSI-RS resource and referring to resource parameters which are uniformly configured by the network side corresponding to each CSI-RS port group in the first CSI-RS resource.

21. The target terminal of claim 20, wherein the port parameter is a part of parameters selected from a preset resource configuration parameter set, and includes one or any combination of a power parameter, a port density, a frequency domain distribution, and a sequence scrambling code identification ID;

22. The target terminal of claim 18 or 19, wherein the processor is further configured to:

23. A storage medium storing a program for implementing configuration of port parameters, the program, when executed by a processor, performing the steps of:

24. A storage medium storing a program for implementing interference measurement, the program, when executed by a processor, performing the steps of:

and performing interference measurement by adopting the first CSI-RS resource with port parameters independently configured corresponding to each CSI-RS port group on a network side, wherein one CSI-RS port group comprises at least one CSI-RS port, and one CSI-RS port group comprises at least one CSI-RS port.