CN108377178B

CN108377178B - Channel state information measuring method, terminal and base station

Info

Publication number: CN108377178B
Application number: CN201810019854.2A
Authority: CN
Inventors: 余政; 南方; 程型清; 张宁波
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2012-06-28
Filing date: 2012-06-28
Publication date: 2020-09-08
Anticipated expiration: 2032-06-28
Also published as: CN103650616B; WO2014000227A1; CN108063635A; CN108063635B; CN103650616A; CN108377178A

Abstract

The application provides a CSI measuring method, a terminal and a base station. The CSI measurement method comprises the following steps: receiving resource configuration information for downlink data transmission and/or measurement information for measurement sent by a base station, and further determining a measurement subband resource in at least one subframe according to the resource configuration information and/or the measurement information, so that CSI measurement can be performed on the determined measurement subband resource.

Description

Channel state information measuring method, terminal and base station

Technical Field

The present application relates to communications technologies, and in particular, to a Channel State Information (CSI) measuring method, a terminal, and a base station.

Background

In a wireless communication system, such as a Long Term Evolution (LTE) system and a Long Term Evolution Advanced (LTE-a) system, a terminal may measure Channel State Information (CSI) and report the CSI to an Evolved NodeB (eNB), so that the eNB can adjust resource allocation, Modulation and Coding Scheme (MCS) of a Physical Downlink Shared Channel (PDSCH) and a related configuration of Multiple Input Multiple Output (MIMO) according to the CSI. In Machine Type Communications (MTC) applications with a large number of terminals, in order to reduce the cost of terminals (i.e., MTC terminals), it is specified that the MTC terminals can only support data and/or control channels and/or Reference Signal (RS) processing within a part of the system bandwidth, and the bandwidth that the MTC terminals can support can be one or a superposition of data bandwidth, control channel bandwidth and reference signal bandwidth that can be processed according to the application requirements.

However, how the MTC terminal measures CSI is not given in the prior art.

Disclosure of Invention

Aspects of the present application provide a CSI measurement method, a terminal, and a base station, which are used to implement measuring CSI by an MTC terminal.

In an aspect of the present application, a CSI measurement method is provided, including:

receiving resource configuration information used for downlink data transmission and/or measurement information used for measurement sent by a base station;

determining a measurement sub-band resource in at least one sub-frame according to the resource configuration information and/or the measurement information;

and performing CSI measurement on the determined measurement subband resource.

In another aspect of the present application, a CSI measurement method is provided, including:

determining resource configuration information for downlink data transmission and/or measurement information for measurement;

and sending the resource configuration information and/or the measurement information to a terminal, so that the terminal determines a measurement subband resource in at least one subframe according to the resource configuration information and/or the measurement information, and performing CSI measurement on the determined measurement subband resource.

In another aspect of the present application, there is provided a terminal, including:

the receiver is used for receiving resource configuration information used for downlink data transmission and/or measurement information used for measurement sent by the base station;

a processor, configured to determine a measurement subband resource within at least one subframe according to the resource configuration information and/or the measurement information;

and the measurer is used for carrying out CSI measurement on the determined measurement subband resource.

In another aspect of the present application, there is provided a base station, including:

a processor, configured to determine resource configuration information for downlink data transmission and/or measurement information for measurement;

a transmitter, configured to send the resource configuration information and/or the measurement information to a terminal, so that the terminal determines a measurement subband resource in at least one subframe according to the resource configuration information and/or the measurement information, and performs CSI measurement on the determined measurement subband resource.

According to the technical scheme, the resource configuration information for downlink data transmission and/or the measurement information for measurement sent by the base station are received by the terminal, and the measurement subband resource in at least one subframe is determined according to the resource configuration information and/or the measurement information, so that the terminal can perform CSI measurement on the determined measurement subband resource, and the CSI measurement of the MTC terminal can be realized.

Drawings

Fig. 1 is a schematic flowchart of a CSI measurement method according to an embodiment of the present application;

FIG. 2A is a schematic diagram of a subband resource indicated by resource allocation information in 6 subframes in the embodiment corresponding to FIG. 1;

FIG. 2B is a diagram illustrating a pattern of subband resources indicated by measurement information within 6 subframes in the embodiment corresponding to FIG. 1;

FIG. 2C is a schematic diagram of a pattern of measurement subband resources determined from the pattern of resources shown in FIGS. 2A and 2B;

FIG. 2D is a schematic diagram of a measurement subband resource determined according to the pattern of resources shown in FIG. 2A;

FIG. 2E is a schematic diagram of another measurement subband resource determined according to the pattern of resources shown in FIG. 2A;

FIG. 2F is a schematic diagram of another measurement subband resource determined according to the pattern of resources shown in FIG. 2A;

FIG. 2G is a schematic diagram of a subband resource indicated by a measured subband resource determined within 6 subframes in the embodiment corresponding to FIG. 1;

fig. 3 is a schematic flowchart of a CSI measurement method according to another embodiment of the present application;

fig. 4 is a schematic structural diagram of a terminal according to another embodiment of the present application;

fig. 5 is a schematic structural diagram of a terminal according to another embodiment of the present application;

fig. 6 is a schematic structural diagram of a base station according to another embodiment of the present application;

fig. 7 is a schematic structural diagram of a base station according to another embodiment of the present application;

fig. 8 is a schematic flowchart of a CSI measurement method according to another embodiment of the present application;

fig. 9 is a schematic flowchart of a CSI measurement method according to another embodiment of the present application;

fig. 10 is a schematic flowchart of a CSI measurement method according to another embodiment of the present application;

fig. 11 is a flowchart illustrating a CSI measurement method according to another embodiment of the present application.

Detailed Description

The technical scheme of the application can be applied to wireless communication systems such as an LTE system or an LTE-A system. The terminal may be a User Equipment (UE) in an LTE system or an LTE-a system; the base station can be an eNB in an LTE system or an LTE-A system.

Fig. 1 is a schematic flow chart of a CSI measurement method according to an embodiment of the present application, as shown in fig. 1.

101. And receiving resource configuration information used for downlink data transmission and/or measurement information used for measurement sent by the base station.

102. And determining the measurement sub-band resource in at least one sub-frame according to the resource configuration information and/or the measurement information.

103. And performing CSI measurement on the determined measurement subband resource.

Wherein the CSI is composed of a Precoding Matrix Indicator (PMI) and a Channel Quality Indicator (CQI).

Optionally, the CSI may further include a Rank Indicator (RI).

The execution subjects of 101 to 103 may be terminals, common terminals capable of supporting system bandwidth, or MTC terminals capable of supporting a part of system bandwidth.

It should be noted that the system bandwidth can be divided into several sub-band resources (sub-bands). In one subframe, each subband Resource is a Resource including a plurality of Resource Blocks (RBs), and the number of RBs included in each subband Resource indicated by the Resource configuration information may not be the same as the number of RBs included in each subband Resource indicated by the measurement information.

Optionally, in a possible implementation manner of this embodiment, in 101, the resource configuration information for downlink data transmission and the measurement information for measurement sent by the base station may be specifically received. Correspondingly, in 102, in a subframe corresponding to the subband resource indicated by the measurement information, if a union of the subband resource indicated by the resource configuration information and the subband resource indicated by the measurement information does not exceed a bandwidth that can be supported by a terminal, determining that the subband resource indicated by the measurement information is the measured subband resource in the subframe, and the bandwidth that can be supported by the terminal is a part of a system bandwidth; or in a subframe corresponding to the subband resource indicated by the measurement information, if a union of the subband resource indicated by the resource configuration information and the subband resource indicated by the measurement information exceeds a bandwidth that can be supported by a terminal, determining the subband resource indicated by the measurement information as the measured subband resource in the subframe, or not performing an operation of determining the measured subband resource in at least one subframe, where the bandwidth that can be supported by the terminal is a part of a system bandwidth.

It should be noted that, in the subframe corresponding to the sub-band resource indicated by the measurement information, if the union of the sub-band resource indicated by the resource configuration information and the sub-band resource indicated by the measurement information exceeds the bandwidth that can be supported by the terminal, determining that the sub-band resource indicated by the measurement information is the measurement sub-band resource in the sub-frame, or not performing the operation of determining the measurement sub-band resource in at least one sub-frame, may operate according to the priority level pre-configured by the system. For example, when data reception or transmission is more important than CSI measurement, the system may set an operation of not determining measurement subband resources within at least one subframe to a high priority; on the contrary, if CSI measurement is more important than data reception or transmission, the system may set the subband resource indicated by the measurement information as the measured subband resource in the subframe to be at a high priority.

For example, fig. 2A is a schematic diagram of a pattern of a subband resource indicated by resource allocation information in 6 subframes in the embodiment corresponding to fig. 1, and fig. 2B is a schematic diagram of a pattern of a subband resource indicated by measurement information in 6 subframes in the embodiment corresponding to fig. 1.

Assuming that the bandwidth that can be supported by the terminal is one sub-band, since the sub-frames corresponding to the sub-band resource indicated by the measurement information are the second sub-frame, the fourth sub-frame and the sixth sub-frame, then,

in the second subframe, the subband resource indicated by the resource configuration information is subband 1, the subband resource indicated by the measurement information is subband 1, and the union of the subband resource and the subband resource does not exceed the bandwidth that can be supported by the terminal, and the terminal can determine that subband 1 is the measured subband resource in the second subframe, as shown in fig. 2C;

in the fourth subframe, the subband resource indicated by the resource configuration information is subband 4, the subband resource indicated by the measurement information is subband 3, and the sum of the subband resource and the subband resource exceeds the bandwidth that can be supported by the terminal, the terminal may determine, according to the preconfigured priority, that the subband 3 indicated by the measurement information is the measurement subband resource in the fourth subframe, as shown in fig. 2C, or the operation of determining the measurement subband resource in the fourth subframe is not performed, and there is no measurement subband resource in the fourth subframe.

In the sixth subframe, the subband resource indicated by the resource configuration information is subband 3, the subband resource indicated by the measurement information is subband 4, and the sum of the subband resource and the subband resource exceeds the bandwidth that can be supported by the terminal, the terminal may determine, according to the preconfigured priority, that the subband 4 indicated by the measurement information is the measurement subband resource in the sixth subframe, as shown in fig. 2C, or the operation of determining the measurement subband resource in the sixth subframe is not performed, and no measurement subband resource is present in the sixth subframe.

Optionally, in a possible implementation manner of this embodiment, in 101, resource configuration information for downlink data transmission sent by the base station may be specifically received. Then, correspondingly, in 102, indication information for indicating subband resources in or outside the subband resources indicated by the resource configuration information may be further obtained; then, the measurement subband resource may be determined according to the resource configuration information and the indication information.

For example, fig. 2A is a schematic diagram of a pattern of a subband resource indicated by resource configuration information in 6 subframes in the embodiment corresponding to fig. 1, and assuming that the indication information indicates that a subband resource in the subband resource indicated by the resource configuration information is a subband in an even subframe of a subframe corresponding to the subband indicated by the resource configuration information, the terminal may determine, according to the subband indicated by the resource configuration information, that the measured subband resource is subband 1 in the second subframe, subband 4 in the fourth subframe, and subband 3 in the sixth subframe according to the subband sequence indicated by the resource configuration information being subband 3, subband 1, subband 2, subband 4, subband 5, and subband 3 in the subframe corresponding to the subband indicated by the resource configuration information, as shown in fig. 2D.

Assuming that the indication information indicates that a subband resource other than the subband resource indicated by the resource configuration information is a subband shifted downward by one subband indicated by the resource configuration information, the terminal may determine, according to the indication information, that the subband indicated by the resource configuration information is, in order of subframes, subband 3, subband 1, subband 2, subband 4, subband 5, and subband 3, and determine that the measured subband resource is, in order of subframes, subband 4, subband 2, subband 3, subband 5, subband 6, and subband 4, as shown in fig. 2E.

Assuming that the indication information indicates that a subband resource other than the subband resource indicated by the resource configuration information is a subband shifted downward by one subband in an even number of subframes in the subframe corresponding to the subband indicated by the resource configuration information, the terminal may determine, according to the subband indicated by the resource configuration information, that the subband is subband 3, subband 1, subband 2, subband 4, subband 5, and subband 3 in sequence according to the subframe order, and the indication information, that the measured subband resource is subband 2 in the second subframe, subband 5 in the fourth subframe, and subband 4 in the sixth subframe, as shown in fig. 2F.

Optionally, the terminal may further receive the indication information sent by the base station. Specifically, the terminal may specifically receive the indication information sent by the base station through a higher layer signaling.

For example, the higher layer signaling may be a Radio Resource Control (RRC) message, specifically, the indication Information may be carried by an Information Element (IE) in the RRC message, and the RRC message may be an RRC message in the prior art, for example, an RRC connection reconfiguration (rrcconnectionreconfguration) message, and the like.

For another example, the higher layer signaling may be a Media Access Control (MAC) Control Element (CE) message, and specifically, the indication information may be carried by adding a new MAC CE message.

It is understood that the specific form of the higher layer signaling appearing later can be similarly exemplified, and is not described in detail later.

Optionally, the indication information may be preconfigured by the system (e.g., a protocol agreement), and the terminal may further obtain the indication information according to the system preconfiguration.

Optionally, in a possible implementation manner of this embodiment, in 101, measurement information for measurement sent by the base station may be specifically received.

For example, fig. 2B is a schematic diagram of a pattern of a subband resource indicated by measurement information in 6 subframes in the embodiment corresponding to fig. 1, and the terminal may determine, according to the subband resource indicated by the measurement information, that the subband resource is subband 2 in the second subframe, subband 3 in the fourth subframe, and subband 4 in the sixth subframe, that the measurement subband resource is subband 2 in the second subframe, subband 3 in the fourth subframe, and subband 4 in the sixth subframe.

Optionally, in 102, the determined measurement subband resource in the at least one subframe may be periodically applied to a subsequent subframe, where the at least one subframe is the period of the measurement subband resource.

Optionally, in a possible implementation manner of this embodiment, after 103, the terminal may further report, to the base station, the CSI of all the subbands measured in more than one subframe or the CSI of the middle subband of all the subbands in one subframe where the reporting time is located.

It should be noted that the reporting time may be determined in a periodic manner or an aperiodic manner. The determination mode of the terminal reporting time can be obtained through high-level signaling.

For example, the determining the reporting time in the periodic manner may be that a certain reporting period and an offset value are configured to the terminal through a high-level signaling, and the terminal calculates the reporting time according to the reporting period and the offset value.

Optionally, the reporting period may be greater than that in the prior art.

Optionally, the reporting periods and offset values of the CQI, the PMI, and the RI may be configured separately, and the reporting periods and offset values of the three may be different.

For example, the determining the reporting time in the aperiodic manner may be determined by bit triggering carried in a Physical Downlink Control Channel (PDCCH), or by bit triggering carried in a random access response. If the trigger information is detected in the nth subframe (n is an integer greater than or equal to 0), determining that the reporting time is the nth + k (n is an integer greater than 0) subframes.

In this embodiment, the reporting of the CSI of the terminal may be implemented in various manners, i.e., in various reporting modes. The selection of the terminal reporting mode can be obtained through high-level signaling.

It should be noted that, the CSI of one of the CSI of the subbands reported by the terminal may be obtained by measuring the subband in one subframe, or may alternatively be an average value of the results of measuring the subband in different subframes.

Optionally, in a possible implementation manner of this embodiment, the terminal may report, to the base station, CSI of all measured subbands in more than one subframe in which the reporting time is located, as shown in fig. 2G. The measured CSI of all sub-bands refers to the CSI measured in the sub-frame between the sub-frames where two adjacent reporting moments are located. At reporting time 1, the measured CSI of all sub-bands sequentially comprises CSI of sub-band 1, CSI of sub-band 2 and CSI of sub-band 3 according to the sequence of sub-frames; at reporting time 2, the measured CSI of all subbands sequentially includes CSI of subband 4, CSI of subband 5, and CSI of subband 3 according to the order of subframes. Alternatively, the CSI of subband 3 measured in two subframes may also be averaged.

It can be understood that the terminal may also report CSI of the measured subband in one subframe to the base station in one subframe at the reporting time.

Optionally, in a possible implementation manner of this embodiment, the terminal reports, to the base station, CSI of M (where M is an integer greater than 0) subbands that are optimal among all measured subbands in more than one subframe, in one subframe where the reporting time is located. The meaning of the optimal M (M is an integer greater than 0) subbands means that channel qualities indicated by Channel Quality Indicators (CQIs) are sorted from good to bad, subbands corresponding to the first M CQIs are the optimal M (M is an integer greater than 0), and a value of M may be preset by a system or configured by a high-level signaling. As shown in fig. 2G, the measured CSI of all subbands refers to the CSI measured in a subframe between subframes where two adjacent reporting times are located. At reporting time 1, the measured CSI of all sub-bands sequentially comprises CSI of sub-band 1, CSI of sub-band 2 and CSI of sub-band 3 according to the sequence of sub-frames; at reporting time 2, the measured CSI of all subbands sequentially includes CSI of subband 4, CSI of subband 5, and CSI of subband 3 according to the order of subframes. If M is set to be 2, reporting the CSI of the optimal sub-band 2 and the CSI of the sub-band 3 in the CSI of all the measured sub-bands at the reporting time 1 after comparison; and reporting the CSI of the optimal sub-band 4 and the CSI of the sub-band 5 in the measured CSI of all the sub-bands at the reporting time 2.

Optionally, in a possible implementation manner of this embodiment, the terminal reports the measured CSI to the base station in a subframe where the reporting time is located according to the subband sequence indicated by the measured subband resource. As shown in fig. 2G, the sub-bands indicated by the measured sub-band resources are, in order, sub-band 1, sub-band 2, sub-band 3, sub-band 4, sub-band 5, and sub-band 3 according to the sequence of sub-frames, and at the reporting time, CSI of all measured sub-bands is reported in order according to the sequence of sub-bands indicated by the measured sub-band resources, for example, CSI of sub-band 1 is reported at reporting time 1; and reporting the CSI of the sub-band 2 at the reporting time 2, and so on.

After the base station obtains the CSI reported by the terminal, the base station may update the resource allocation information and/or the measurement information according to the obtained CSI reported by the terminal, that is, update the resource allocation information at the next resource allocation and/or the measurement information at the next measurement.

For example, assume that the system bandwidth has a total of 4 subbands, numbered 1, 2, 3, and 4, respectively. In a first period (assuming that the period includes 4 subframes), the subband resources indicated by the resource configuration information are subband 1, subband 2, and subband 2 in sequence according to the subframe order, and the subband resources indicated by the measurement information are subband 2, subband 3, and subband 3 in sequence according to the subframe order. And the terminal determines the measuring sub-band resources to be the sub-band 2 in the first sub-frame, the sub-band 2 in the second sub-frame, the sub-band 3 in the third sub-frame and the sub-band 3 in the fourth sub-frame according to the resource configuration information and the measuring information. And then, the terminal performs CSI measurement on the measurement sub-band resource and reports the measurement result to the base station. According to the measurement result, if finding that the sub-band 2 and the sub-band 3 are suitable for the terminal, the base station may sequentially update the sub-band resources indicated by the resource configuration information to the sub-band 2, the sub-band 3, and the sub-band 3 according to the subframe order in the next period. However, if the base station finds that sub-bands 2 and 3 are no longer suitable for the terminal after a while, a new measurement information may be redefined to indicate a new sub-band resource, and then the sub-band resource indicated by the resource configuration information may be updated according to the measurement result.

In addition, the base station can also update the MCS and the MIMO related configuration according to the obtained CSI reported by the terminal.

In this embodiment, by receiving resource configuration information for downlink data transmission and/or measurement information for measurement sent by a base station, and further determining a measurement subband resource in at least one subframe according to the resource configuration information and/or the measurement information, CSI measurement can be performed on the determined measurement subband resource, and CSI measurement by an MTC terminal can be achieved.

Fig. 3 is a schematic flowchart of a CSI measurement method according to another embodiment of the present application, as shown in fig. 3.

301. Resource configuration information for downlink data transmission and/or measurement information for measurement is determined.

302. And sending the resource configuration information and/or the measurement information to a terminal, so that the terminal determines a measurement subband resource in at least one subframe according to the resource configuration information and/or the measurement information, and performing CSI measurement on the determined measurement subband resource.

Optionally, the CSI may further include a Rank Indicator (RI).

It should be noted that the executing entities 301 to 302 may be base stations, where the related terminals may be ordinary terminals capable of supporting the system bandwidth, and may also be MTC terminals capable of supporting a part of the system bandwidth.

It should be noted that the system bandwidth may be divided into several sub-band resources. In one subframe, each subband Resource is a Resource including a plurality of Resource Blocks (RBs), and the number of RBs included in each subband Resource indicated by the Resource configuration information may not be the same as the number of RBs included in each subband Resource indicated by the measurement information.

It should be noted that, for the detailed description of determining, by the terminal, the measured subband resource in at least one subframe according to the resource configuration information and/or the measurement information, reference may be made to relevant contents in the embodiment corresponding to fig. 1, and details are not described here again.

Optionally, in a possible implementation manner of this embodiment, the base station may further send indication information to the terminal, so that the terminal determines the measured subband resource according to the resource configuration information and the indication information, where the indication information is used to indicate subband resources in or outside the subband resources indicated by the resource configuration information. For a detailed description, reference may be made to relevant contents in the embodiment corresponding to fig. 1, and details are not described here.

Specifically, the base station may specifically send the indication information to the terminal through a higher layer signaling.

Optionally, the base station may not send the indication information to the terminal, where the indication information may be preconfigured by the system (e.g., protocol agreement), and the terminal may further obtain the indication information according to the system preconfiguration.

Optionally, in a possible implementation manner of this embodiment, after 302, the base station may further receive CSI of all subbands measured by the terminal in more than one subframe or CSI of a middle subband of all subbands in one subframe where the terminal is located at the reporting time, where the subframe is reported by the terminal. For a detailed description, reference may be made to relevant contents in the embodiment corresponding to fig. 1, and details are not described here.

Optionally, in a possible implementation manner of this embodiment, after obtaining the CSI reported by the terminal, the base station may update the resource configuration information and/or the measurement information according to the obtained CSI reported by the terminal, that is, update the resource configuration information in the next resource allocation and/or the measurement information in the next measurement.

In this embodiment, by determining resource configuration information used for downlink data transmission and/or measurement information used for measurement, the resource configuration information and/or the measurement information may be sent to a terminal, so that the terminal determines a measurement subband resource in at least one subframe according to the resource configuration information and/or the measurement information, and performs CSI measurement on the determined measurement subband resource, thereby enabling an MTC terminal to measure CSI.

Fig. 8 is a flowchart of a method for indicating subband resources by resource configuration information according to the embodiments corresponding to fig. 1 and fig. 3, as shown in fig. 8.

801. The period T of the resource configuration information, the effective window length S, the information element R indicating the subband resource configured in the period T, the frame start time FRAMESTART at which the resource configuration information is applied, and the subframe start time SUBFRAMESTART are determined.

802. And generating the resource configuration information according to the period T of the determined resource configuration information, the effective window length S, the information element R indicating the sub-band resource configured in the period T, the frame starting time FRAMESTART of the application resource configuration information and the subframe starting time SUBFRAMETAR.

803. And notifying the generated resource configuration information to a terminal.

The execution entities 801 to 803 may be base stations.

In 801, the period T of the resource allocation information may be in unitsSo as to be milliseconds, T is an integer of 1 or more. The effective window length S represents that the effective window length is composed of S subframes, and S is an integer greater than or equal to 1. The period T includes

The effective window is long and front

The length of each effective window is S, and the length of the last effective window is S

The effective window length S indicates that each subband resource indicated by the resource configuration information can be applied to S subframes. The information element R may be represented as a sequence, which may be divided into

A plurality of parts, each part being represented by an information element N. The information element N indicates subband resources within one effective window length S. The system bandwidth may be divided into M subband resources, and each subband resource is a resource including several RBs in one subframe. N may be an integer and optionally a binary bit to indicate one or more of the M subband resources.

Optionally, in a possible implementation manner of this embodiment, the frame start time and the subframe start time of the application resource configuration information may also be determined by a formula. For example, the frame start time and the subframe start time to which the resource configuration information is applied may be numbers or indexes of an SFN and a subframe index, respectively, that satisfy the following formulas:

(10×SFN+subframeindex)mod T＝X；

in the above formula, sfn (system frame number) is the radio frame number of the system, subframex is the number or index of the subframe in one radio frame, mod is modulo operation, T is the period of the resource allocation information, and X is a predefined constant.

If the frame start time and the subframe start time of the application resource configuration information are determined by the formula, in 801, the frame start time FRAMESTART and the subframe start time SUBFRAMESTART of the application resource configuration information are not determined.

In 802, the generated resource configuration information may be:

Resourceconfiginfo::＝sequence

{T ENUMERATED{t1,t2,….},

S ENUMERATED{s1,s2,….},

R SEQUENCE(SIZE(ceil(T/S)))of N

N INTEGER(1,…,M)

FRAMESTART

SUBFRAMESTART

}

optionally, in a possible implementation manner of this embodiment, the frame start time and the subframe start time at which the resource configuration information is applied may also be determined similarly by the formula described in 801.

If the frame start time and the subframe start time of the application resource configuration information are determined by a formula, in 802, resource configuration information is generated according to the period T of the determined resource configuration information, the effective window length S, and an information element R indicating a sub-band resource configured in the period T. The generated resource configuration information may be:

Resourceconfiginfo::＝sequence

{T ENUMERATED{t1,t2,….},

S ENUMERATED{s1,s2,….},

R SEQUENCE(SIZE(ceil(T/S)))of N

N INTEGER(1,…,M)

}

for example, assuming that the period T of the resource configuration information is 20 ms and the effective window length is 4 subframes, the information element R may be divided into 5 parts, and each part of R is assumed to indicate one subband resource by one integer. It is assumed that the system bandwidth can be divided into 4 subband resources, numbered 1, 2, 3, 4. One radio frame has 10 subframes, which are numbered as 0, 1, …, and 9, the frame start time of the application resource configuration information is the 1 st frame, and the subframe start time is the 0 th subframe. When the information element R is 32141, the information element R is used to indicate subband resource 3 of 0 th, 1 st, 2 nd, 3 rd subframe, subband resource 2 of 4 th, 5 th, 6 th, 7 th subframe, subband resource 1 of 8 th, 9 th, 0 th, 1 th subframe, subband resource 4 of 2 th, 3 th, 4 th, 5 th subframe, and subband resource 1 of 6 th, 7 th, 8 th, 9 th subframe in the period.

Optionally, in 801 and 802, if the effective window length S is equal to 1, the resource configuration information may not include the effective window length S, determine a period T of the resource configuration information, an information element R indicating a subband resource configured in the period T, a frame start time FRAMESTART of the application resource configuration information, and a subframe start time SUBFRAMESTART, and generate the resource configuration information according to the period T of the determined resource configuration information, the information element R indicating a subband resource configured in the period T, the frame start time FRAMESTART of the application resource configuration information, and the subframe start time SUBFRAMESTART.

It should be noted that the subband resource indicated by the resource configuration information in this embodiment may be used for the terminal to receive or transmit data, and/or control channel, and/or reference signal.

In this embodiment, the base station generates the resource allocation information by determining a period T of the resource allocation information, an effective window length S, an information element R indicating a subband resource allocated in the period T, a frame start time FRAMESTART of the application resource allocation information, and a subframe start time SUBFRAMESTART, and notifies the terminal of the generated resource allocation information, thereby implementing the indication of the subband resource by using the resource allocation information.

Fig. 9 is a flowchart of a method for indicating subband resources by resource configuration information according to the embodiments corresponding to fig. 1 and fig. 3, as shown in fig. 9.

901. Resource configuration information is received.

902. According to the received resource configuration information, determining a period T, an effective window length S, an information element R indicating a sub-band resource configured in the period T, a frame start time FRAMESTART and a sub-frame start time SUBFRAMETAR of the application resource configuration information, and determining the sub-band resource indicated by the resource configuration information according to the determined T, S, R, FRAMESTART and SUBFRAMETAR.

It should be noted that the execution main bodies of 901 to 902 may be terminals, may be ordinary terminals capable of supporting system bandwidth, and may also be MTC terminals capable of supporting a part of bandwidth in the system bandwidth.

Fig. 10 is a flowchart of a method for indicating subband resources by measurement information according to the embodiment corresponding to fig. 1 and 3, as shown in fig. 10.

1001. The period T of the measurement information, the subframe granularity S, the information element R indicating the subband resource within the period T, the frame start time FRAMESTART at which the measurement information is applied, and the subframe start time SUBFRAMESTART are determined.

1002. And generating the measurement information according to the period T of the determined measurement information, the granularity S of the subframe, an information element R indicating the sub-band resource in the period T, the frame starting time FRAMESTART of the application measurement information and the starting time SUBFRAMETAR of the subframe.

1003. And informing the generated measurement information to a terminal.

The 1001-1003 execution main body may be a base station.

In 1001, a unit of a period T of the measurement information may be milliseconds, and T is an integer of 1 or more. The subframe granularity S consists of S subframes, and S is an integer greater than or equal to 1. The period T includes

Sub-frame granularity, front

The granularity of one sub-frame is S, and the granularity of the last sub-frame is S

The subframe granularity S indicates that, in the period T, S-1 subframes are spaced between two adjacent subframes where the sub-band resource indicated by the measurement information is located. The letterThe information element R may be represented as a sequence, which may be divided into

A plurality of parts, each part being represented by an information element N. The information element N indicates subband resources within one subframe granularity S. The system bandwidth may be divided into M subband resources, and each subband resource is a resource including several RBs in one subframe. N may be an integer and optionally a binary bit to indicate one or more of the M subband resources.

Optionally, in a possible implementation manner of this embodiment, the frame start time and the subframe start time at which the measurement information is applied may also be determined by a formula. For example, the frame start time and the subframe start time to which the measurement information is applied may be numbers or indexes of an SFN and a subframe index, respectively, that satisfy the following formulas:

(10×SFN+subframeindex)mod T＝X；

in the above formula, sfn (system frame number) is the radio frame number of the system, subframidex is the number or index of the subframe within one radio frame, mod is the modulo operation, T is the period of the measurement information, and X is a predefined constant.

If the frame start time and the subframe start time of the application measurement information are determined by the formula, the frame start time FRAMESTART and the subframe start time SUBFRAMESTART of the application measurement information are not determined in 1001.

In 1002, the generated measurement information may be:

Measurementinfo::＝sequence

{T ENUMERATED{t1,t2,….},

S ENUMERATED{s1,s2,….},

R SEQUENCE(SIZE(ceil(T/S)))of N

N INTEGER(1,…,M)

FRAMESTART

SUBFRAMESTART

}

optionally, in a possible implementation manner of this embodiment, the frame start time and the subframe start time to which the measurement information is applied may also be determined similarly by the formula described in 1001. If the frame start time and the subframe start time of the application measurement information are determined by a formula, in 1002, the measurement information is generated according to the period T of the determined measurement information, the subframe granularity S, and an information element R indicating subband resources within the period T. The generated measurement information may be:

Measurementinfo::＝sequence

{T ENUMERATED{t1,t2,….},

S ENUMERATED{s1,s2,….},

R SEQUENCE(SIZE(ceil(T/S)))of N

N INTEGER(1,…,M)

}

for example, assuming that the period T of the measurement information is 20 ms and the subframe granularity is 4 subframes, the information element R may be divided into 5 parts, assuming that each part of R indicates one subband resource by one integer. It is assumed that the system bandwidth can be divided into 4 subband resources, numbered 1, 2, 3, 4. One wireless frame has 10 subframes, which are numbered as 0, 1, …, and 9, the frame starting time of the application measurement information is the 1 st frame, and the subframe starting time is the 0 th subframe. If the information element R is 32141, the information element R is used to indicate the subband resource 3 of the 0 th subframe, the subband resource 2 of the 4 th subframe, the subband resource 1 of the 8 th subframe, the subband resource 4 of the 2 nd subframe, and the subband resource 1 of the 6 th subframe in the period.

Optionally, in 1001 and 1002, if the subframe granularity S is equal to 1, the measurement information may not include the subframe granularity S, determine a period T of the measurement information, an information element R indicating a subband resource within the period T, a frame start time FRAMESTART and a subframe start time SUBFRAMESTART of the application measurement information, and generate the measurement information according to the period T of the determined measurement information, the information element R indicating a subband resource within the period T, the frame start time FRAMESTART and the subframe start time SUBFRAMESTART of the application measurement information.

It should be noted that the subband resource indicated by the measurement information in this embodiment may be used for the terminal to determine the measured subband resource.

In this embodiment, the base station generates measurement information by determining a measurement period T, an effective window length S, an information element R indicating a subband resource in the period T, a frame start time FRAMESTART at which the measurement information is applied, and a subframe start time SUBFRAMESTART, and notifies the terminal of the generated measurement information, thereby implementing an indication of the subband resource using the measurement information.

Fig. 11 is a flowchart of a method for indicating subband resources by measurement information according to the embodiment corresponding to fig. 1 and 3, as shown in fig. 11.

1101. Measurement information is received.

1102. According to the received measurement information, determining a period T of the measurement information, a subframe granularity S, an information element R indicating a subband resource in the period T, a frame start time FRAMESTART of the application measurement information and a subframe start time SUBFRAMETAR, and determining the subband resource indicated by the measurement information according to the determined T, S, R, FRAMESTART and SUBFRAMETAR.

The execution subjects of 1101 to 1102 may be terminals, may be ordinary terminals capable of supporting a system bandwidth, and may also be MTC terminals capable of supporting a part of the system bandwidth.

It should be noted that, in this embodiment of the present application, in a subframe, the resource configuration information and the indication of the measurement information on the subband resource are both exemplified by a subband resource, and according to the resource configuration information and/or the measurement information, the determined measurement subband resource is also exemplified by a subband resource contained in a subframe. It is to be understood that the resource configuration information and the indication of the sub-band resources by the measurement information may be extended to a plurality of sub-band resources within one sub-frame, and the determined measurement sub-band may also be extended to contain a plurality of sub-band resources within one sub-frame according to the resource configuration information and/or the measurement information. Accordingly, the method and the device related to the expansion belong to the protection scope of the application.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

Fig. 4 is a schematic structural diagram of a terminal according to another embodiment of the present application, and as shown in fig. 4, the terminal according to this embodiment may include a receiver 41, a processor 42, and a measurer 43. The receiver 41 is configured to receive resource configuration information for downlink data transmission and/or measurement information for measurement sent by a base station; the processor 42 is configured to determine a measurement subband resource in at least one subframe according to the resource configuration information and/or the measurement information; the measurer 43 is configured to perform CSI measurement on the determined measurement subband resource.

Optionally, in a possible implementation manner of this embodiment, the processor 42 may specifically determine, according to the measurement information, a period T of the measurement information, a subframe granularity S, and an information element R indicating a subband resource within the period T; and determining the sub-band resource indicated by the measurement information according to the frame starting time FRAMESTART and the subframe starting time SUBFRAMETAR to which the measurement information is applied, and the determined T, S and R. Optionally, processor 42 may further determine FRAMESTART and the SUBFRAMESTART according to the measurement information; or determining FRAMESTART and the SUBFRAMESTART according to a formula (10 × SFN + subframeindex) mod T ═ X, where SFN is a radio frame number of the system, subframeindex is a number or index of a subframe in one frame, mod is a modulo operation, T is a period of measurement information, and X is a predefined constant.

Optionally, in a possible implementation manner of this embodiment, the processor 42 may specifically determine, in a subframe corresponding to the subband resource indicated by the measurement information, that the subband resource indicated by the measurement information is a measurement subband resource in the subframe if a union of the subband resource indicated by the resource configuration information and the subband resource indicated by the measurement information does not exceed a bandwidth that can be supported by a terminal, and the bandwidth that can be supported by the terminal is a part of a system bandwidth.

Optionally, in a possible implementation manner of this embodiment, in a subframe corresponding to the subband resource indicated by the measurement information, if a union of the subband resource indicated by the resource configuration information and the subband resource indicated by the measurement information exceeds a bandwidth that can be supported by a terminal, the processor 42 may further determine the subband resource indicated by the measurement information as the measured subband resource in the subframe, or may not perform an operation of determining the measured subband resource in at least one subframe, where the bandwidth that can be supported by the terminal is a part of a system bandwidth.

Optionally, in a possible implementation manner of this embodiment, the receiver 41 may further obtain indication information, where the indication information is used to indicate a subband resource in or outside the subband resource indicated by the resource configuration information; accordingly, the processor may specifically determine the measurement subband resource according to the resource configuration information and the indication information.

Optionally, the receiver 41 may specifically receive the indication information sent by the base station. Specifically, the receiver 41 may specifically receive the indication information sent by the base station through higher layer signaling.

Optionally, in a possible implementation manner of this embodiment, as shown in fig. 5, the terminal provided in this embodiment may further include a transmitter 51, configured to report, to the base station, CSI of all sub-bands that have been measured in more than one sub-frame or CSI of a middle sub-band of all sub-bands in one sub-frame where the reporting time is located.

In this embodiment, the terminal receives, through the receiver, resource configuration information for downlink data transmission and/or measurement information for measurement sent by the base station, and then the processor determines, according to the resource configuration information and/or the measurement information, a measurement subband resource in at least one subframe, so that the measurer can perform CSI measurement on the determined measurement subband resource, and can implement that the MTC terminal measures CSI.

Fig. 6 is a schematic structural diagram of a base station according to another embodiment of the present application, and as shown in fig. 6, a terminal according to this embodiment may include a processor 61 and a transmitter 62. Wherein, the processor 61 is configured to determine resource configuration information for downlink data transmission and/or measurement information for measurement; the transmitter 62 is configured to transmit the resource configuration information and/or the measurement information to a terminal, so that the terminal determines a measurement subband resource in at least one subframe according to the resource configuration information and/or the measurement information, and performs CSI measurement on the determined measurement subband resource.

Optionally, in a possible implementation manner of this embodiment, the processor 61 may specifically determine a period T of the measurement information, a subframe granularity S, and an information element R indicating a subband resource in the period T; generating the measurement information based on the determined T, S and R. Optionally, processor 61 may further determine a frame start time FRAMESTART and a subframe start time SUBFRAMESTART of the measurement information to which the measurement information is applied; accordingly, processor 62 may specifically generate the measurement information according to the determined T, S, R, FRAMESTART and SUBFRAMESTART.

Optionally, in a possible implementation manner of this embodiment, the transmitter 62 may further send indication information to the terminal, so that the terminal determines the measured subband resource according to the resource configuration information and the indication information, where the indication information is used to indicate subband resources in or outside the subband resources indicated by the resource configuration information.

Specifically, the transmitter 62 may specifically transmit the indication information to the terminal through a higher layer signaling.

Optionally, in a possible implementation manner of this embodiment, as shown in fig. 7, the base station provided in this embodiment may further include a receiver 71, configured to receive CSI of all sub-bands or CSI of a middle sub-band of all sub-bands, which is reported by the terminal in one subframe where the reporting time is located, and which is measured by the terminal in more than one subframe.

Optionally, in a possible implementation manner of this embodiment, the processor 61 may further update the resource configuration information and/or the measurement information according to the CSI of all subbands measured by the terminal or the CSI of the middle subband among all subbands received by the receiver.

In this embodiment, a base station determines, by a processor, resource configuration information for downlink data transmission and/or measurement information for measurement, so that a transmitter can send the resource configuration information and/or the measurement information to a terminal, so that the terminal determines, according to the resource configuration information and/or the measurement information, a measurement subband resource in at least one subframe, and performs CSI measurement on the determined measurement subband resource, thereby enabling an MTC terminal to measure CSI.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A method for measuring Channel State Information (CSI) is characterized by comprising the following steps:

receiving resource configuration information which is sent by a base station and used for downlink data transmission, wherein sub-band resources indicated by the resource configuration information are used for a terminal to receive a control channel, and the terminal supports part of system bandwidth in the system bandwidth;

determining a measurement sub-band resource in at least one sub-frame according to the resource configuration information;

performing CSI measurement on the determined measurement sub-band resources;

and reporting the CSI of M sub-bands with the optimal channel quality in all the sub-bands measured in more than one sub-frame to the base station in a sub-frame at the reporting time, wherein M is an integer more than 0.

2. The method of claim 1, wherein the determining the measurement subband resources in at least one subframe according to the resource configuration information comprises:

determining the period T, the effective window length S and an information element R indicating the sub-band resource in the period T of the resource configuration information according to the resource configuration information;

and determining the sub-band resource indicated by the resource configuration information according to the frame starting time FRAMESTART and the subframe starting time SUBFRAMETAR to which the resource configuration information is applied, and the determined T, S and R.

3. The method according to claim 2, wherein the determining the subband resource indicated by the resource configuration information according to the frame start time FRAMESTART and the subframe start time SUBFRAMESTART at which the resource configuration information is applied, and the determined T, S and R further comprises:

determining FRAMESTART and the SUBFRAMETAR according to the resource configuration information; or

Determining FRAMESTART and SUBFRAMETAR according to a formula (10 × SFN + subframe index) mod T ═ X, where SFN is a radio frame number of the system, subframe is a number or index of a subframe in one frame, mod is a modulo operation, T is a period of resource configuration information, and X is a predefined constant.

4. The method according to any of claims 1 to 3, wherein the determining the measurement subband resources in at least one subframe according to the resource configuration information comprises:

obtaining indication information, wherein the indication information is used for indicating subband resources in or out of the subband resources indicated by the resource configuration information;

and determining the measurement sub-band resource according to the resource configuration information and the indication information.

5. The method of claim 4, wherein the obtaining the indication information comprises:

and receiving the indication information sent by the base station.

6. A method for measuring Channel State Information (CSI) is characterized by comprising the following steps:

determining resource configuration information for downlink data transmission, wherein a sub-band resource indicated by the resource configuration information is used for a terminal to receive a control channel, and the terminal supports part of system bandwidth in the system bandwidth;

sending the resource configuration information to a terminal, so that the terminal determines a measurement sub-band resource in at least one sub-frame according to the resource configuration information, and performs CSI measurement on the determined measurement sub-band resource;

and receiving CSI of M sub-bands with the optimal channel quality in all sub-bands measured in more than one sub-frame by the terminal in one sub-frame where the terminal is located at the reporting time, wherein M is an integer more than 0.

7. The method of claim 6, wherein the determining resource configuration information for downlink data transmission comprises:

determining a period T, a subframe granularity S and an information element R indicating sub-band resources in the period T of the resource configuration information;

generating the resource configuration information according to the determined T, S and R.

8. The method of claim 7, wherein generating the resource configuration information according to the determined T, S and R comprises, prior to:

determining a frame starting time FRAMESTART and a subframe starting time SUBFRAMETAR to which the resource configuration information is applied;

generating the resource configuration information according to the determined T, S and R, including:

and generating the resource configuration information according to the determined T, S, R, FRAMESTART and SUBFRAMETAR.

9. The method according to any one of claims 6 to 8, further comprising:

and sending indication information to the terminal so that the terminal determines the measurement sub-band resources according to the resource configuration information and the indication information, wherein the indication information is used for indicating sub-band resources in or out of the sub-band resources indicated by the resource configuration information.

10. The method according to any of claims 6 to 8, wherein the receiving, by the terminal reporting in one subframe at the reporting time, CSI of M subbands with optimal channel quality among all subbands measured in more than one subframe, further comprises:

and updating the resource configuration information according to the received CSI of the M sub-bands with the optimal channel quality in all the sub-bands measured by the terminal.

11. An apparatus for CSI measurement, the apparatus comprising:

a unit configured to receive resource configuration information for downlink data transmission sent by a base station, where a sub-band resource indicated by the resource configuration information is used for a terminal to receive a control channel, and the terminal supports a part of a system bandwidth in the system bandwidth;

means for determining a measurement subband resource within at least one subframe according to the resource configuration information;

means for performing CSI measurements on the determined measurement subband resources; and the number of the first and second groups,

and a unit, configured to report, to the base station, CSI of M subbands with the best channel quality in all subbands measured in more than one subframe in one subframe where a reporting time is located, where M is an integer greater than 0.

12. The apparatus according to claim 11, wherein the means for determining the measured subband resources in at least one subframe according to the resource configuration information is specifically configured to:

13. The apparatus of claim 12, further comprising:

means for determining FRAMESTART and the SUBFRAMETAR according to the resource configuration information; or

Means for determining FRAMESTART and the SUBFRAMETAR according to the formula (10 × SFN + subframe index) mod T ═ X, where SFN is the radio frame number of the system, subframe is the number or index of a subframe within one frame, mod is modulo operation, T is the period of resource configuration information, and X is a predefined constant.

14. The apparatus according to any of claims 11 to 13, wherein the means for determining the measurement subband resources in at least one subframe according to the resource configuration information is specifically configured to:

15. The apparatus of claim 14, further comprising:

means for receiving the indication information sent by the base station.

16. An apparatus for CSI measurement, the apparatus comprising:

a unit configured to determine resource configuration information used for downlink data transmission, where a sub-band resource indicated by the resource configuration information is used for a terminal to receive a control channel, and the terminal supports a part of system bandwidth in the system bandwidth;

a unit configured to send the resource configuration information to a terminal, so that the terminal determines a measurement subband resource in at least one subframe according to the resource configuration information, and performs CSI measurement on the determined measurement subband resource;

and a unit configured to receive CSI of M subbands with the best channel quality in all subbands measured by the terminal in more than one subframe, where M is an integer greater than 0, and the CSI is reported by the terminal in a subframe where the terminal is located at a reporting time.

17. The apparatus of claim 16, wherein the means for determining resource configuration information for downlink data transmission is specifically configured to:

18. The apparatus of claim 17, wherein the means for determining the resource configuration information for the downlink data transmission is further configured to:

19. The apparatus of any one of claims 16 to 18, further comprising:

and a unit configured to send indication information to the terminal, so that the terminal determines the measured subband resource according to the resource configuration information and the indication information, where the indication information is used to indicate subband resources in or outside the subband resources indicated by the resource configuration information.

20. The apparatus of any one of claims 16 to 18, further comprising:

and the unit is used for updating the resource configuration information according to the received CSI of the M sub-bands with the optimal channel quality in all the sub-bands measured by the terminal.

21. A computer-readable storage medium having computer-executable instructions stored thereon that, when executed, perform the method of any one of claims 1-5.

22. A computer-readable storage medium having computer-executable instructions stored thereon that, when executed, perform the method of any one of claims 6-10.

23. A chip system, comprising a processor configured to perform the method of any of claims 1-5.

24. A chip system, characterized in that the chip system comprises a processor for performing the method of any of claims 6-10.