WO2016161639A1 - Method and device for determining channel state information - Google Patents

Method and device for determining channel state information Download PDF

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Publication number
WO2016161639A1
WO2016161639A1 PCT/CN2015/076339 CN2015076339W WO2016161639A1 WO 2016161639 A1 WO2016161639 A1 WO 2016161639A1 CN 2015076339 W CN2015076339 W CN 2015076339W WO 2016161639 A1 WO2016161639 A1 WO 2016161639A1
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WO
WIPO (PCT)
Prior art keywords
resource
base station
time
reference
indication information
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PCT/CN2015/076339
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French (fr)
Chinese (zh)
Inventor
郑娟
闫志宇
李强
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华为技术有限公司
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Priority to PCT/CN2015/076339 priority Critical patent/WO2016161639A1/en
Publication of WO2016161639A1 publication Critical patent/WO2016161639A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14Spectrum sharing arrangements between different networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation

Abstract

Disclosed are a method and device for determining channel state information, comprising: a UE acquires indication information, determines a reference point in time on the basis of the indication information acquired, determines a reference resource on the basis of the reference point in time, determines, on the basis of the reference resource, channel state information of a channel corresponding to the first license-free spectrum resource, and transmits to the base station the channel state information determined. As such, with opportune use of the license-free spectrum resource, the UE determines in real-time the reference point in time on the basis of the indication information transmitted by the base station and determines a reference resource used for measuring a channel state of the channel corresponding to the license-free spectrum resource preempted by the base station, thus allowing flexible adjustment of the determined reference resource on the basis of the license-free spectrum resource preempted by the base station, increasing the precision in channel state information measurement, and effectively ensuring the efficiency of data transmission using the license-free spectrum resource.

Description

Method and device for determining channel state information Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for determining channel state information.

Background technique

The spectrum is the basis of wireless communication. According to the latest international spectrum white paper published by the Federal Communications Commission (FCC), unlicensed or unlicensed (English) unlicensed spectrum resources are larger than authorized or licensed (English: licensed) spectrum resources.

At present, the main technology used on the unlicensed spectrum is wireless fidelity (English: Wireless Fidelity; abbreviation: WiFi), but WiFi technology is in mobility, security, quality of service (English: Quality of Service; abbreviation: QoS) At the same time, there are defects in handling multi-user scheduling. Therefore, applying Long-Term Evolution (LTE) equipment to the unlicensed spectrum can not only effectively utilize unlicensed spectrum resources, but also provide more effective Wireless access to meet the growing demand for mobile bandwidth services.

Since the unlicensed spectrum can be occupied by multiple wireless communication systems and/or by multiple operators, in order to ensure fairness in the use of unlicensed spectrum resources, any device needs to know the license-free spectrum before using the unlicensed spectrum resources. The use of resources. For example, the Listening Before (Talk: Abbreviation: LBT) rule, that is, before using the unlicensed spectrum resources, you need to conduct a clear channel assessment (English: Clear Channel Assessment; abbreviation: CCA) to determine the license-free spectrum. Whether the resource is idle or available; after determining that the unlicensed spectrum resource is idle or available, preempting the unlicensed spectrum resource and transmitting the data on the preempted spectrum resource; when the time for occupying the unlicensed spectrum resource reaches a set threshold The unlicensed spectrum resource needs to be released. Before the next use of the unlicensed spectrum resources, it is again determined whether the unlicensed spectrum resources are free or available.

In order to have more opportunities to seize the unlicensed spectrum resources, LTE devices can realize the interception of unlicensed spectrum resources at any time. However, in this way, how to ensure the transmission efficiency of LTE equipment on the unlicensed spectrum resources becomes a key issue in the opportunistic use of the unlicensed spectrum resources and in the limited time period in which the preempted spectrum resources are used.

For LTE devices, one of the keys to improving data transmission efficiency is to obtain channel state information (English: Channel State Information; abbreviation: CSI) that matches the preempted unlicensed spectrum resource channel state.

It can be seen that under the premise of opportunistic use of license-free spectrum resources, how to accurately determine CSI and ensure data transmission efficiency becomes an important problem to be solved.

Summary of the invention

The embodiment of the invention provides a method and a device for determining channel state information, which are used to solve the problem of how to accurately determine the CSI and ensure the data transmission efficiency under the premise of the opportunistic use of the license-free spectrum resource.

In a first aspect, an embodiment of the present invention provides a method for determining channel state information, including:

The user equipment UE obtains the indication information, where the indication information is used to indicate that the base station has preempted the first license-free spectrum resource;

Determining, by the UE, the reference time point according to the obtained indication information;

Determining, by the UE, the reference resource according to the reference time point, where the reference resource is used to determine a channel state of the channel corresponding to the first unlicensed spectrum resource that the base station has preempted;

Determining channel state information of the channel corresponding to the first unlicensed spectrum resource according to the reference resource, and sending the determined channel state information to the base station.

With reference to the possible implementation manners of the first aspect of the present invention, in a first possible implementation manner of the first aspect, the UE acquires the indication information, including:

The UE receives the indication information that is sent by the base station by using the first unlicensed spectrum resource, where the indication information includes a moment when the base station sends the indication information;

The determining, according to the obtained indication information, the reference time point, includes:

And determining, by the UE, the reference time point according to the time that the obtained indication information includes the time when the base station sends the indication information.

With reference to the first possible implementation manner of the first aspect of the present invention, in a second possible implementation manner of the first aspect, the UE sends the indication by using the base station according to the obtained indication information The moment of the information, determine the reference time point, including:

The UE determines the time at which the base station sends the indication information as a reference time point.

With reference to the first possible implementation manner of the first aspect of the present invention, in a third possible implementation manner of the first aspect, the UE, according to the received indication information, includes the base station, sending the indication The moment of the information, determine the reference time point, including:

And determining, by the UE, a reference time point according to a correspondence between a preset reference time point and a time when the base station sends the indication information, and a time when the base station sends the indication information.

With reference to the possible implementation manners of the first aspect of the present invention, in a fourth possible implementation manner of the first aspect, the acquiring information by the UE includes:

Receiving, by the UE, the cross-carrier signaling that is sent by the base station by using the licensed spectrum resource and/or the second unlicensed spectrum resource that is preempted, where the cross-carrier signaling includes indication information sent by the base station;

The UE obtains the indication information sent by the base station from the received cross-carrier signaling, where the indication information includes a time unit indicated by the base station;

The determining, according to the obtained indication information, the reference time point, includes:

The UE determines a reference time point according to the time unit indicated by the base station included in the obtained indication information.

With reference to the possible implementation manners of the first aspect of the present invention, in a fifth possible implementation manner of the first aspect, the UE obtains the indication information, including:

Receiving, by the UE, control information that is sent by the base station by using the first unlicensed spectrum resource, where the control information includes indication information sent by the base station;

Obtaining, by the UE, the indication information sent by the base station, where the indication information includes a time unit indicated by the base station;

The determining, according to the obtained indication information, the reference time point, includes:

The UE determines a reference time point according to the time unit indicated by the base station included in the obtained indication information.

With reference to the fourth possible implementation manner of the first aspect of the present invention, or the fifth possible implementation manner of the first aspect of the present invention, in a sixth possible implementation manner of the first aspect, The time unit includes at least one of the following information:

a time at which the base station performs data transmission by using the first unlicensed spectrum resource;

The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.

In conjunction with a possible embodiment of the first aspect of the invention, or a first possible embodiment of the first aspect of the invention, or a second possible embodiment of the first aspect of the invention, or in combination with the first aspect of the invention A third possible embodiment, or a fourth possible embodiment of the first aspect of the invention, or a fifth possible embodiment of the first aspect of the invention, or a combination of the first aspect of the invention In a seventh possible implementation manner of the first aspect, the indication information includes at least one of the following information:

Preamble signal

Downlink control information DCI carried by the physical downlink control channel PDCCH;

The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.

In conjunction with a possible embodiment of the first aspect of the invention, or a first possible embodiment of the first aspect of the invention, or a second possible embodiment of the first aspect of the invention, or in combination with the first aspect of the invention A third possible embodiment, or a fourth possible embodiment of the first aspect of the invention, or a fifth possible embodiment of the first aspect of the invention, or a combination of the first aspect of the invention The sixth possible implementation manner, or the seventh possible implementation manner of the first aspect of the present invention, in the eighth possible implementation manner of the first aspect, the determining, by the UE, the reference resource according to the reference time point ,include:

The UE corresponding to the time unit including the reference time point according to the reference time point Time domain resources are used as reference resources.

In conjunction with a possible embodiment of the first aspect of the invention, or a first possible embodiment of the first aspect of the invention, or a second possible embodiment of the first aspect of the invention, or in combination with the first aspect of the invention A third possible embodiment, or a fourth possible embodiment of the first aspect of the invention, or a fifth possible embodiment of the first aspect of the invention, or a combination of the first aspect of the invention In a ninth possible implementation manner of the first aspect, the UE may determine the reference resource according to the reference time point in the ninth possible implementation manner of the first aspect of the present disclosure. ,include:

The UE selects, according to the reference time point, a time domain resource corresponding to a time unit of the reference time point that is smaller than a time unit that sets the first threshold as a reference resource.

With reference to the ninth possible implementation manner of the first aspect of the present invention, in a tenth possible implementation manner of the first aspect, the UE selects a distance from the reference time point according to the reference time point The time domain resource corresponding to the time unit that is less than the first threshold is used as the reference resource, and includes:

The UE selects, according to the reference time point, a time domain resource corresponding to a time unit closest to the reference time point as a reference resource.

In conjunction with a possible embodiment of the first aspect of the invention, or a first possible embodiment of the first aspect of the invention, or a second possible embodiment of the first aspect of the invention, or in combination with the first aspect of the invention A third possible embodiment, or a fourth possible embodiment of the first aspect of the invention, or a fifth possible embodiment of the first aspect of the invention, or a combination of the first aspect of the invention The sixth possible implementation manner, or the seventh possible implementation manner of the first aspect of the present invention, in the eleventh possible implementation manner of the first aspect, the method further includes:

Receiving, by the UE, resource information, used by the base station, to report channel state information, where the resource information includes a time domain resource;

Determining, by the UE, the reference resource according to the reference time point, specifically:

Determining, by the UE, the reference resource according to the time domain resource included in the resource information and the time domain resource corresponding to the reference time point, where the time domain resource included in the reference resource corresponds to The point lags behind the reference time point.

With reference to the eleventh possible implementation manner of the first aspect of the present invention, in a twelfth possible implementation manner of the first aspect, the UE, according to the time domain resource included in the resource information, and the reference time Determine the reference resources by including the corresponding time domain resources, including:

The UE selects a time domain resource that satisfies the set condition as a reference resource from the time domain resource corresponding to the reference time point to all the time domain resources included in the time domain resource included in the resource information.

In conjunction with the twelfth possible implementation manner of the first aspect of the present invention, in the thirteenth possible implementation manner of the first aspect, the setting condition includes at least one of the following conditions:

Condition 1: The distance between the time domain resource included in the resource information meets the set second threshold, and is located after the time domain resource corresponding to the reference time point, and is located in the time domain included in the resource information. Before the resource;

Condition 2: a distance between the time domain resource included in the resource information is greater than a distance between the time domain resources corresponding to the reference time point;

Condition 3: if the determined number of reference time points is at least two, the time domain resource corresponding to the reference time point whose distance between the time domain resources included in the resource information is less than a set threshold value As a reference resource.

In conjunction with the eleventh possible embodiment of the first aspect of the invention, or in combination with the twelfth possible embodiment of the first aspect of the invention, or in combination with the thirteenth possible embodiment of the first aspect of the invention, In a fourteenth possible implementation manner of the foregoing aspect, the determining, by the UE, the channel state information of the channel corresponding to the first unlicensed spectrum resource, according to the reference resource, includes:

When the time difference between the time corresponding to the time domain resource included in the reference resource and the time corresponding to the time domain resource included in the resource information is less than a third threshold, the UE passes the reference The resource performs measurement to determine channel state information of the channel corresponding to the first unlicensed spectrum resource.

With reference to the fourteenth possible implementation manner of the first aspect of the present invention, in a fifteenth possible implementation manner of the first aspect, the UE determines the first by performing measurement on the reference resource The channel state information of the channel corresponding to the unlicensed spectrum resource, including:

Determining, by the UE, a time domain resource and a frequency domain resource included in the reference resource according to the reference resource;

The UE measures the determined time domain resource and/or the frequency domain resource, and determines channel state information of the unlicensed spectrum resource corresponding channel according to the measurement result.

With reference to the fifteenth possible implementation manner of the first aspect of the present invention, in the sixteenth possible implementation manner of the first aspect, the UE is to the determined time domain resource and/or the frequency domain resource Make measurements, including:

Performing channel measurement and/or interference measurement on the determined time domain resources by the UE;

and / or,

The UE performs channel measurement and/or interference measurement on the determined frequency domain resources, respectively.

In conjunction with the eleventh possible embodiment of the first aspect of the invention, or in combination with the twelfth possible embodiment of the first aspect of the invention, or in combination with the thirteenth possible embodiment of the first aspect of the invention, In a seventeenth possible implementation manner of the first aspect, the determining, by the UE, the channel state information of the channel corresponding to the first unlicensed spectrum resource, according to the reference resource, includes:

When the time difference between the time corresponding to the time domain resource included in the reference resource and the time corresponding to the time domain resource included in the resource information is not less than a third threshold, the configured The channel state information of the licensed spectrum resource corresponding channel is used as the channel state information of the channel corresponding to the first unlicensed spectrum resource.

With reference to the seventeenth possible implementation manner of the first aspect of the present invention, in the eighteenth possible implementation manner of the first aspect, the channel state information of the unlicensed spectrum resource corresponding to the channel configured by the UE includes:

The UE receives the specific signaling sent by the base station, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.

With reference to the eighteenth possible implementation manner of the first aspect of the present invention, in the nineteenth possible implementation manner of the first aspect, the specific signaling includes at least one of the following signaling forms:

Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.

In a second aspect, an embodiment of the present invention provides a method for determining channel state information, including:

The base station sends the indication information to the user equipment UE, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource;

Receiving, by the base station, channel state information that is sent by the UE, where the channel state information includes channel state information of the first unlicensed spectrum resource corresponding channel, where the channel state information is received by the UE according to the received The indication information determines a reference time point, and determines a reference resource according to the reference time point, determined according to the reference resource.

With reference to the possible implementation manner of the second aspect of the present invention, in a first possible implementation manner of the second aspect, the base station sends the indication information to the UE, including:

The base station sends the indication information to the UE by using the first unlicensed spectrum resource, where the indication information includes a moment when the base station sends the indication information.

With reference to the possible implementation manner of the second aspect of the present invention, in a second possible implementation manner of the second aspect, the base station sends the indication information to the UE, including:

Transmitting, by the base station, the cross-carrier signaling to the UE by using the licensed spectrum resource and/or the pre-empted second unlicensed spectrum resource, where the cross-carrier signaling includes indication information sent by the base station, The indication information includes a time unit indicated by the base station.

With reference to the possible implementation manner of the second aspect of the present invention, in a third possible implementation manner of the second aspect, the base station sends the indication information to the UE, including:

The base station sends control information to the UE by using the first unlicensed spectrum resource, where the control information includes indication information sent by the base station, where the indication information includes a time unit indicated by the base station.

With reference to the second possible implementation manner of the second aspect of the present invention, or the third possible implementation manner of the second aspect of the present invention, in the fourth possible implementation manner of the second aspect, the base station indication The time unit includes at least one of the following information:

a time at which the base station performs data transmission by using the first unlicensed spectrum resource;

The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.

In conjunction with a possible embodiment of the second aspect of the invention, or in combination with the first aspect of the second aspect of the invention A possible embodiment, or a second possible embodiment incorporating the second aspect of the invention, or in combination with a third possible embodiment of the second aspect of the invention, or a fourth aspect of the second aspect of the invention In a fifth possible implementation manner of the second aspect, the indication information includes at least one of the following information:

Preamble signal

Downlink control information DCI carried by the physical downlink control channel PDCCH;

The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.

In conjunction with a possible embodiment of the second aspect of the invention, or a first possible embodiment of the second aspect of the invention, or a second possible embodiment of the second aspect of the invention, or in combination with the second aspect of the invention In a third possible implementation manner, or in combination with the fourth possible implementation manner of the second aspect of the present invention, in a sixth possible implementation manner of the second aspect, before the base station sends the indication information to the UE, The method also includes:

The base station sends resource information for reporting channel state information to the UE, where the resource information includes a time domain resource.

In conjunction with a possible embodiment of the second aspect of the invention, or a first possible embodiment of the second aspect of the invention, or a second possible embodiment of the second aspect of the invention, or in combination with the second aspect of the invention In a third possible implementation manner of the present invention, or in combination with the fourth possible implementation manner of the second aspect of the present invention, in a seventh possible implementation manner of the second aspect, the method further includes:

The base station sends specific signaling to the UE, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.

With reference to the seventh possible implementation manner of the second aspect of the present invention, in the eighth possible implementation manner of the second aspect, the specific signaling includes at least one of the following signaling forms:

Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.

In a third aspect, an embodiment of the present invention provides a device for determining channel state information, including:

An obtaining unit, configured to obtain indication information, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource;

a determining unit, configured to determine a reference time point according to the indication information acquired by the acquiring unit, and determine a reference resource according to the reference time point, where the reference resource is used to determine that the base station has preempted The first unlicensed spectrum resource corresponds to a channel state of the channel;

And a sending unit, configured to determine, according to the reference resource, channel state information of the channel corresponding to the first unlicensed spectrum resource, and send the determined channel state information to the base station.

With reference to a possible implementation manner of the third aspect of the present invention, in a first possible implementation manner of the third aspect, the acquiring unit is configured to receive, by the base station, indication information that is sent by the base station by using the first unlicensed spectrum resource, where The indication information includes a time when the base station sends the indication information;

The determining unit is configured to determine a reference time point according to the time that the indication information acquired by the acquiring unit includes the base station sending the indication information.

With reference to the first possible implementation manner of the third aspect of the present invention, in a second possible implementation manner of the third aspect, the determining unit includes, according to the indication information that is acquired by the acquiring unit, The time when the base station sends the indication information, and determines a reference time point, including:

The time at which the base station transmits the indication information is determined as a reference time point.

With reference to the first possible implementation manner of the third aspect of the present invention, in a third possible implementation manner of the third aspect, the determining unit includes, according to the indication information that is acquired by the acquiring unit, The time when the base station sends the indication information, and determines a reference time point, including:

And determining a reference time point according to a correspondence between a preset reference time point and a time when the base station sends the indication information, and a time when the acquired base station sends the indication information.

With reference to a possible implementation manner of the third aspect of the present invention, in a fourth possible implementation manner of the third aspect, the acquiring unit is specifically configured to receive, by the base station, the licensed spectrum resource and/or the preempted second license-free The cross-carrier signaling sent by the spectrum resource, where the cross-carrier signaling includes indication information sent by the base station;

Determining, by the received cross-carrier signaling, the indication information sent by the base station, where the indication information includes a time unit indicated by the base station;

The determining unit is specifically configured to: according to the indication information acquired by the acquiring unit The time unit indicated by the base station is included, and the reference time point is determined.

With reference to a possible implementation manner of the third aspect of the present invention, in a fifth possible implementation manner of the third aspect, the acquiring unit is configured to receive control information that is sent by the base station by using the first license-free spectrum resource, where The control information includes indication information sent by the base station;

Acquiring, by the received control information, the indication information sent by the base station, where the indication information includes a time unit indicated by the base station;

The determining unit is specifically configured to determine a reference time point according to a time unit indicated by the base station included in the indication information acquired by the acquiring unit.

With reference to the fourth possible implementation manner of the third aspect of the present invention, or the fifth possible implementation manner of the third aspect of the present invention, in a sixth possible implementation manner of the third aspect, The time unit includes at least one of the following information:

a time at which the base station performs data transmission by using the first unlicensed spectrum resource;

The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.

In conjunction with a possible embodiment of the third aspect of the invention, or a first possible embodiment of the third aspect of the invention, or a second possible embodiment of the third aspect of the invention, or in combination with the third aspect of the invention A third possible embodiment, or a fourth possible embodiment of the third aspect of the invention, or a fifth possible embodiment of the third aspect of the invention, or in combination with the third aspect of the invention In a seventh possible implementation manner of the third aspect, the indication information includes at least one of the following information:

Preamble signal

Downlink control information DCI carried by the physical downlink control channel PDCCH;

The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.

In conjunction with a possible embodiment of the third aspect of the invention, or a first possible embodiment of the third aspect of the invention, or a second possible embodiment of the third aspect of the invention, or in combination with the third aspect of the invention A third possible embodiment, or a fourth possible embodiment of the third aspect of the invention, or a fifth possible embodiment of the third aspect of the invention, or in combination with the third aspect of the invention Six possible embodiments, or in combination with the invention A seventh possible implementation manner of the third aspect, in the eighth possible implementation manner of the third aspect, the determining unit is configured to: according to the reference time point, a time unit that includes the reference time point The corresponding time domain resource is used as a reference resource.

In conjunction with a possible embodiment of the third aspect of the invention, or a first possible embodiment of the third aspect of the invention, or a second possible embodiment of the third aspect of the invention, or in combination with the third aspect of the invention A third possible embodiment, or a fourth possible embodiment of the third aspect of the invention, or a fifth possible embodiment of the third aspect of the invention, or in combination with the third aspect of the invention In a ninth possible implementation manner of the third aspect, the determining unit is specifically configured to use the reference time according to the seventh possible implementation manner of the third aspect of the present invention. And selecting a time domain resource corresponding to the time unit of the reference time point to be smaller than a time unit for setting the first threshold as a reference resource.

With reference to the ninth possible implementation manner of the third aspect of the present invention, in a tenth possible implementation manner of the third aspect, the determining unit, according to the reference time point, selects between the reference time point and the reference time point The time domain resource corresponding to the time unit that is smaller than the set first threshold is used as the reference resource, and includes:

According to the reference time point, a time domain resource corresponding to a time unit closest to the reference time point is selected as a reference resource.

In conjunction with a possible embodiment of the third aspect of the invention, or a first possible embodiment of the third aspect of the invention, or a second possible embodiment of the third aspect of the invention, or in combination with the third aspect of the invention A third possible embodiment, or a fourth possible embodiment of the third aspect of the invention, or a fifth possible embodiment of the third aspect of the invention, or in combination with the third aspect of the invention The sixth possible implementation manner, or the seventh possible implementation manner of the third aspect of the present invention, in the eleventh possible implementation manner of the third aspect, the acquiring unit is further configured to receive, sent by the base station Resource information for reporting channel state information, where the resource information includes a time domain resource;

The determining unit is specifically configured to determine a reference resource according to a time domain resource included in the resource information received by the acquiring unit and a time domain resource corresponding to the reference time point, where The time point corresponding to the time domain resource included in the reference resource lags behind the reference time point.

With reference to the eleventh possible implementation manner of the third aspect of the present invention, in a twelfth possible implementation manner of the third aspect, the determining unit is included in the resource information that is received by the acquiring unit The time domain resource and the time domain resource corresponding to the reference time point determine the reference resource, including:

A time domain resource that satisfies the set condition is selected as a reference resource from among the time domain resources corresponding to the reference time point to all the time domain resources included between the time domain resources included in the resource information.

In conjunction with the twelfth possible implementation manner of the third aspect of the present invention, in the thirteenth possible implementation manner of the third aspect, the setting condition includes at least one of the following conditions:

Condition 1: The distance between the time domain resource included in the resource information meets the set second threshold, and is located after the time domain resource corresponding to the reference time point, and is located in the time domain included in the resource information. Before the resource;

Condition 2: a distance between the time domain resource included in the resource information is greater than a distance between the time domain resources corresponding to the reference time point;

Condition 3: if the determined number of reference time points is at least two, the time domain resource corresponding to the reference time point whose distance between the time domain resources included in the resource information is less than a set threshold value As a reference resource.

With reference to the eleventh possible embodiment of the third aspect of the invention, or the twelfth possible embodiment of the third aspect of the invention, or the thirteenth possible embodiment of the third aspect of the invention, In a fourteenth possible implementation manner of the third aspect, the sending unit is configured to: a time corresponding to a time domain resource included in the reference resource and a time domain resource included in the resource information When the time difference between the times is less than the third threshold, the channel state information of the channel corresponding to the first unlicensed spectrum resource is determined by measuring the reference resource.

With reference to the fourteenth possible implementation manner of the third aspect of the present invention, in a fifteenth possible implementation manner of the third aspect, the sending unit determines the first exemption by performing measurement on the reference resource The channel state information of the channel corresponding to the licensed spectrum resource, including:

Determining, according to the reference resource, a time domain resource and a frequency domain resource included in the reference resource;

And measuring the determined time domain resource and/or the frequency domain resource, and determining channel state information of the unlicensed spectrum resource corresponding channel according to the measurement result.

With reference to the fifteenth possible implementation manner of the third aspect of the present invention, in the sixteenth possible implementation manner of the third aspect, the sending unit is configured to the determined time domain resource and/or the frequency domain Resources are measured, including:

Performing channel measurement and/or interference measurement on the determined time domain resources respectively;

and / or,

Channel measurement and/or interference measurement are performed separately for the determined frequency domain resources.

With reference to the eleventh possible embodiment of the third aspect of the invention, or the twelfth possible embodiment of the third aspect of the invention, or the thirteenth possible embodiment of the third aspect of the invention, In a seventeenth possible implementation manner of the third aspect, the sending unit is configured to: the time corresponding to the time domain resource included in the reference resource is corresponding to the time domain resource included in the resource information. When the time difference between the times is not less than the third threshold, the channel state information of the configured unlicensed spectrum resource corresponding channel is used as the channel state information of the first unlicensed spectrum resource corresponding channel.

With the seventeenth possible implementation manner of the third aspect of the present invention, in the eighteenth possible implementation manner of the third aspect, the acquiring unit is further configured to receive the specific signaling sent by the base station, where And the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.

With reference to the eighteenth possible implementation manner of the third aspect of the present invention, in the nineteenth possible implementation manner of the third aspect, the specific signaling includes at least one of the following signaling forms:

Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.

In a fourth aspect, an embodiment of the present invention provides a device for determining channel state information, including:

a sending unit, configured to send the indication information to the user equipment UE, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource;

a receiving unit, configured to receive channel state information sent by the UE, where the channel state information includes channel state information of the first unlicensed spectrum resource corresponding channel, where the channel state information is received by the UE according to When the indication information is determined, the reference time point is determined, and according to the reference time The inter-point determines a reference resource, which is determined based on the reference resource.

With the possible implementation of the fourth aspect of the present invention, in a first possible implementation manner of the fourth aspect, the sending unit is configured to send the indication information to the UE by using the first unlicensed spectrum resource, The indication information includes a time when the base station sends the indication information.

With reference to a possible implementation manner of the fourth aspect of the present invention, in a second possible implementation manner of the fourth aspect, the sending unit is specifically configured to pass the licensed spectrum resource and/or the second unlicensed spectrum resource that has been preempted Transmitting the cross-carrier signaling to the UE, where the cross-carrier signaling includes indication information sent by the base station, where the indication information includes a time unit indicated by the base station.

With reference to a possible implementation manner of the fourth aspect of the present invention, in a third possible implementation manner of the fourth aspect, the sending unit is configured to send, by using the first unlicensed spectrum resource, control information to the UE, The control information includes indication information sent by the base station, where the indication information includes a time unit indicated by the base station.

In a fourth possible implementation manner of the fourth aspect of the present invention, or The time unit includes at least one of the following information:

a time at which the base station performs data transmission by using the first unlicensed spectrum resource;

The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.

In conjunction with a possible embodiment of the fourth aspect of the invention, or a first possible embodiment of the fourth aspect of the invention, or a second possible embodiment of the fourth aspect of the invention, or in combination with the fourth aspect of the invention In a third possible implementation manner, or in combination with the fourth possible implementation manner of the fourth aspect of the present invention, in the fifth possible implementation manner of the fourth aspect, the indication information includes at least one of the following information One:

Preamble signal

Downlink control information DCI carried by the physical downlink control channel PDCCH;

The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.

In conjunction with a possible embodiment of the fourth aspect of the invention, or a first possible embodiment of the fourth aspect of the invention, or a second possible embodiment of the fourth aspect of the invention, or In a third possible implementation manner of the fourth aspect of the present invention, or in combination with the fourth possible implementation manner of the fourth aspect of the present invention, in the sixth possible implementation manner of the fourth aspect, the sending The unit is further configured to send resource information for reporting channel state information to the UE, where the resource information includes a time domain resource, before sending the indication information to the UE.

In conjunction with a possible embodiment of the fourth aspect of the invention, or a first possible embodiment of the fourth aspect of the invention, or a second possible embodiment of the fourth aspect of the invention, or in combination with the fourth aspect of the invention In a third possible implementation manner, or in combination with the fourth possible implementation manner of the fourth aspect of the present invention, in the seventh possible implementation manner of the fourth aspect, the sending unit is further used for The UE sends specific signaling, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.

With reference to the seventh possible implementation manner of the fourth aspect of the present invention, in the eighth possible implementation manner of the fourth aspect, the specific signaling includes at least one of the following signaling forms:

Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.

In a fifth aspect, an embodiment of the present invention provides a device for determining channel state information, including:

a signal receiver, configured to obtain indication information, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource;

a processor, configured to determine a reference time point according to the obtained indication information, and determine a reference resource according to the reference time point, where the reference resource is used to determine that the base station has preempted the first a channel state of the channel corresponding to the unlicensed spectrum resource; determining channel state information of the channel corresponding to the first unlicensed spectrum resource according to the reference resource;

And a signal transmitter, configured to send the determined channel state information to the base station.

With reference to a possible implementation manner of the fifth aspect of the present invention, in a first possible implementation manner of the fifth aspect, the signal receiver is configured to receive an indication that the base station sends by using the first unlicensed spectrum resource Information, where the indication information includes a time when the base station sends the indication information;

The processor is specifically configured to determine a reference time point according to the time when the obtained indication information includes the time when the base station sends the indication information.

With reference to the first possible implementation manner of the fifth aspect of the present invention, in a second possible implementation manner of the fifth aspect, the processor, according to the received indication information, The time at which the information is indicated, and the reference time point is determined, including:

The time at which the base station transmits the indication information is determined as a reference time point.

With reference to the first possible implementation manner of the fifth aspect of the present invention, in a third possible implementation manner of the fifth aspect, the processor, according to the received indication information, The time at which the information is indicated, and the reference time point is determined, including:

And determining a reference time point according to a correspondence between a preset reference time point and a time when the base station sends the indication information, and a time when the acquired base station sends the indication information.

With reference to a possible implementation manner of the fifth aspect of the present invention, in a fourth possible implementation manner of the fifth aspect, the signal receiver is configured to receive, by the base station, a licensed spectrum resource and/or a preempted The cross-carrier signaling sent by the unlicensed spectrum resource, where the cross-carrier signaling includes indication information sent by the base station;

Determining, by the received cross-carrier signaling, the indication information sent by the base station, where the indication information includes a time unit indicated by the base station;

Determining, by the processor, the reference time point according to the obtained indication information, including:

Determining a reference time point according to the time unit indicated by the base station included in the obtained indication information.

With reference to a possible implementation manner of the fifth aspect of the present invention, in a fifth possible implementation manner of the fifth aspect, the signal receiver is configured to receive, by the base station, a control that is sent by using the first unlicensed spectrum resource Information, where the control information includes indication information sent by the base station;

Acquiring, by the received control information, the indication information sent by the base station, where the indication information includes a time unit indicated by the base station;

Determining, by the processor, the reference time point according to the obtained indication information, including:

Determining a reference time point according to the time unit indicated by the base station included in the obtained indication information.

In conjunction with the fourth possible embodiment of the fifth aspect of the invention, or in combination with the fifth party of the invention A fifth possible implementation manner of the fifth aspect, in a sixth possible implementation manner of the fifth aspect, the time unit indicated by the base station includes at least one of the following information:

a time at which the base station performs data transmission by using the first unlicensed spectrum resource;

The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.

In conjunction with a possible embodiment of the fifth aspect of the invention, or a first possible embodiment of the fifth aspect of the invention, or a second possible embodiment of the fifth aspect of the invention, or in combination with the fifth aspect of the invention A third possible embodiment, or a fourth possible embodiment of the fifth aspect of the invention, or a fifth possible embodiment of the fifth aspect of the invention, or a combination of the fifth aspect of the invention In a seventh possible implementation manner of the fifth aspect, the indication information includes at least one of the following information:

Preamble signal

Downlink control information DCI carried by the physical downlink control channel PDCCH;

The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.

In conjunction with a possible embodiment of the fifth aspect of the invention, or a first possible embodiment of the fifth aspect of the invention, or a second possible embodiment of the fifth aspect of the invention, or in combination with the fifth aspect of the invention A third possible embodiment, or a fourth possible embodiment of the fifth aspect of the invention, or a fifth possible embodiment of the fifth aspect of the invention, or a combination of the fifth aspect of the invention In a sixth possible implementation manner of the fifth aspect, the processor may determine the reference according to the reference time point in the eighth possible implementation manner of the fifth aspect of the present invention. Resources, including:

According to the reference time point, a time domain resource corresponding to the time unit including the reference time point is used as a reference resource.

In conjunction with a possible embodiment of the fifth aspect of the invention, or a first possible embodiment of the fifth aspect of the invention, or a second possible embodiment of the fifth aspect of the invention, or in combination with the fifth aspect of the invention A third possible embodiment, or a fourth possible embodiment of the fifth aspect of the invention, or a fifth possible embodiment of the fifth aspect of the invention, or a combination of the fifth aspect of the invention Six possible embodiments, or in combination with the invention A seventh possible implementation manner of the fifth aspect, in a ninth possible implementation manner of the fifth aspect, the determining, by the processor, the reference resource according to the reference time point, including:

Determining, according to the reference time point, a time domain resource corresponding to a time unit of the reference time point that is smaller than a time unit for setting the first threshold as a reference resource.

With reference to the ninth possible implementation manner of the fifth aspect of the present invention, in a tenth possible implementation manner of the fifth aspect, the processor selects, between the reference time point, according to the reference time point The time domain resource corresponding to the time unit that is smaller than the set first threshold is used as the reference resource, and includes:

According to the reference time point, a time domain resource corresponding to a time unit closest to the reference time point is selected as a reference resource.

In conjunction with a possible embodiment of the fifth aspect of the invention, or a first possible embodiment of the fifth aspect of the invention, or a second possible embodiment of the fifth aspect of the invention, or in combination with the fifth aspect of the invention A third possible embodiment, or a fourth possible embodiment of the fifth aspect of the invention, or a fifth possible embodiment of the fifth aspect of the invention, or a combination of the fifth aspect of the invention The sixth possible implementation manner, or the seventh possible implementation manner of the fifth aspect of the present invention, in the eleventh possible implementation manner of the fifth aspect,

The signal receiver is further configured to receive, by the base station, resource information for reporting channel state information, where the resource information includes a time domain resource;

Determining, by the processor, the reference resource according to the reference time point, specifically:

Determining a reference resource according to a time domain resource included in the resource information and a time domain resource corresponding to the reference time point, where a time point corresponding to the time domain resource included in the reference resource lags behind the reference time point .

With reference to the eleventh possible implementation manner of the fifth aspect of the present invention, in a twelfth possible implementation manner of the fifth aspect, the processor, according to the time domain resource and the reference included in the resource information The time domain resource corresponding to the time point determines the reference resource, including:

A time domain resource that satisfies the set condition is selected as a reference resource from among the time domain resources corresponding to the reference time point to all the time domain resources included between the time domain resources included in the resource information.

In conjunction with the twelfth possible implementation manner of the fifth aspect of the present invention, in the thirteenth possible implementation manner of the fifth aspect, the setting condition includes at least one of the following conditions:

Condition 1: The distance between the time domain resource included in the resource information meets the set second threshold, and is located after the time domain resource corresponding to the reference time point, and is located in the time domain included in the resource information. Before the resource;

Condition 2: a distance between the time domain resource included in the resource information is greater than a distance between the time domain resources corresponding to the reference time point;

Condition 3: if the determined number of reference time points is at least two, the time domain resource corresponding to the reference time point whose distance between the time domain resources included in the resource information is less than a set threshold value As a reference resource.

With reference to the eleventh possible embodiment of the fifth aspect of the invention, or the twelfth possible embodiment of the fifth aspect of the invention, or the thirteenth possible embodiment of the fifth aspect of the invention, In a fourteenth possible implementation manner of the fifth aspect, the determining, by the processor, channel state information of the channel corresponding to the first unlicensed spectrum resource, according to the reference resource, includes:

When the time difference between the time corresponding to the time domain resource included in the reference resource and the time corresponding to the time domain resource included in the resource information is less than a third threshold, the reference resource is measured. And determining channel state information of the channel corresponding to the first unlicensed spectrum resource.

With reference to the fourteenth possible implementation manner of the fifth aspect of the present invention, in a fifteenth possible implementation manner of the fifth aspect, the processor determines the first exemption by performing measurement on the reference resource The channel state information of the channel corresponding to the licensed spectrum resource, including:

Determining, according to the reference resource, a time domain resource and a frequency domain resource included in the reference resource;

And measuring the determined time domain resource and/or the frequency domain resource, and determining channel state information of the unlicensed spectrum resource corresponding channel according to the measurement result.

With reference to the fifteenth possible implementation manner of the fifth aspect of the present invention, in a sixteenth possible implementation manner of the fifth aspect, the processor pair the determined time domain resource and/or the frequency domain Resources are measured, including:

Performing channel measurement and/or interference measurement on the determined time domain resources respectively;

and / or,

Channel measurement and/or interference measurement are performed separately for the determined frequency domain resources.

With reference to the eleventh possible embodiment of the fifth aspect of the invention, or the twelfth possible embodiment of the fifth aspect of the invention, or the thirteenth possible embodiment of the fifth aspect of the invention, In a seventeenth possible implementation manner of the fifth aspect, the determining, by the processor, the channel state information of the channel corresponding to the first unlicensed spectrum resource according to the reference resource, including:

The unlicensed spectrum resource to be configured when the time difference between the time corresponding to the time domain resource included in the reference resource and the time corresponding to the time domain resource included in the resource information is not less than a third threshold Channel state information of the corresponding channel is used as channel state information of the channel corresponding to the first unlicensed spectrum resource.

With reference to the seventeenth possible implementation manner of the fifth aspect of the present invention, in the eighteenth possible implementation manner of the fifth aspect, the channel state information of the unlicensed spectrum resource corresponding to the channel configured by the processor includes:

Receiving specific signaling sent by the base station, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.

With reference to the eighteenth possible implementation manner of the fifth aspect of the present invention, in the nineteenth possible implementation manner of the fifth aspect, the specific signaling includes at least one of the following signaling forms:

Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.

In a sixth aspect, an embodiment of the present invention provides a device for determining channel state information, including:

a signal transmitter, configured to send indication information to the user equipment UE, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource;

a signal receiver, configured to receive channel state information sent by the UE, where the channel state information includes channel state information of the first unlicensed spectrum resource corresponding channel, where the channel state information is Receiving the indication information to determine a reference time point, and determining a reference resource according to the reference time point, determined according to the reference resource.

With reference to a possible implementation manner of the sixth aspect of the present invention, in a first possible implementation manner of the sixth aspect, the signal transmitter is configured to use the first unlicensed spectrum resource to the UE And transmitting the indication information, where the indication information includes a moment when the base station sends the indication information.

With reference to a possible implementation manner of the sixth aspect of the present invention, in a second possible implementation manner of the sixth aspect, the signal transmitter is specifically configured to pass the licensed spectrum resource and/or the second unlicensed spectrum that has been preempted The resource sends cross-carrier signaling to the UE, where the cross-carrier signaling includes indication information sent by the base station, where the indication information includes a time unit indicated by the base station.

With reference to a possible implementation manner of the sixth aspect of the present invention, in a third possible implementation manner of the sixth aspect, the signal transmitter is configured to send, by using the first unlicensed spectrum resource, control information to the UE. The control information includes indication information sent by the base station, where the indication information includes a time unit indicated by the base station.

With reference to the second possible implementation manner of the sixth aspect of the present invention, or the third possible implementation manner of the sixth aspect of the present invention, in a fourth possible implementation manner of the sixth aspect, the base station indication The time unit includes at least one of the following information:

a time at which the base station performs data transmission by using the first unlicensed spectrum resource;

The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.

In conjunction with a possible embodiment of the sixth aspect of the invention, or a first possible embodiment of the sixth aspect of the invention, or a second possible embodiment of the sixth aspect of the invention, or in combination with the sixth aspect of the invention In a third possible implementation manner, or in combination with the fourth possible implementation manner of the sixth aspect of the present invention, in the fifth possible implementation manner of the sixth aspect, the indication information includes at least one of the following information One:

Preamble signal

Downlink control information DCI carried by the physical downlink control channel PDCCH;

The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.

In conjunction with a possible embodiment of the sixth aspect of the invention, or a first possible embodiment of the sixth aspect of the invention, or a second possible embodiment of the sixth aspect of the invention, or in combination with the sixth aspect of the invention In a third possible implementation manner of the sixth aspect, or in combination with the fourth possible implementation manner of the sixth aspect of the present invention, The signal transmitter is further configured to send resource information for reporting channel state information to the UE, where the resource information includes a time domain resource, before sending the indication information to the UE.

In conjunction with a possible embodiment of the sixth aspect of the invention, or a first possible embodiment of the sixth aspect of the invention, or a second possible embodiment of the sixth aspect of the invention, or in combination with the sixth aspect of the invention In a third possible implementation manner, or in combination with the fourth possible implementation manner of the sixth aspect of the present invention, in the seventh possible implementation manner of the sixth aspect, the signal transmitter is further used to The UE sends specific signaling, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.

With reference to the seventh possible implementation manner of the sixth aspect of the present invention, in the eighth possible implementation manner of the sixth aspect, the specific signaling includes at least one of the following signaling forms:

Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.

Beneficial effects:

In the embodiment of the present invention, the indication information is obtained by the UE, where the indication information is used to indicate that the base station has preempted the first license-free spectrum resource. In this way, in the case of the use of the license-free spectrum resource, the UE determines the reference time point according to the indication information sent by the base station in real time, and then determines the reference resource used for measuring the channel state of the channel corresponding to the unlicensed spectrum resource preempted by the base station, so that the determination is made. The reference resource can be flexibly adjusted according to the unlicensed spectrum resources preempted by the base station, so that the UE can accurately determine the channel state information that matches the channel corresponding to the unlicensed spectrum resource, improve the accuracy of channel state information measurement, and effectively ensure the use. Data transfer efficiency of license-free spectrum resources.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying for inventive labor.

FIG. 1 is a schematic flowchart diagram of a method for determining channel state information according to the present invention;

2 is a schematic diagram of a start time of a preamble signal when a time that has been preempted to an unlicensed spectrum resource is taken;

3 is a schematic diagram of an initial transmission timing of a preamble signal;

4 is a schematic diagram of a time frame included in a time unit indicated by the base station as a subframe boundary;

5 is a schematic diagram of a time included in a time unit indicated by the base station as a symbol boundary;

Figure 6 is a schematic diagram of a reference time point;

7 is a schematic diagram of a starting position of a PDCCH;

8 is a schematic structural diagram of a determined reference resource location;

9 is a schematic structural diagram of a determined reference resource location;

FIG. 10 is a schematic flowchart diagram of a method for determining channel state information according to the present invention;

FIG. 11 is a schematic structural diagram of a device for determining channel state information according to the present invention;

12 is a schematic structural diagram of a device for determining channel state information according to the present invention;

FIG. 13 is a schematic structural diagram of a device for determining channel state information according to the present invention;

FIG. 14 is a schematic structural diagram of a device for determining channel state information according to the present invention.

detailed description

In order to achieve the object of the present invention, an embodiment of the present invention provides a method and a device for determining channel state information, where the UE obtains indication information, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource; Determining a reference time point according to the reference information; determining, according to the reference time point, a reference resource, where the reference resource is used to measure a channel state of the preempted first unlicensed spectrum resource corresponding channel; And determining, by the reference resource, channel state information of the channel corresponding to the first unlicensed spectrum resource, and transmitting the determined channel state information to the base station.

In this way, in the case of the use of the license-free spectrum resource, the UE determines the reference time point according to the indication information sent by the base station in real time, and then determines the reference resource used for measuring the channel state of the channel corresponding to the unlicensed spectrum resource preempted by the base station, so that the determination is made. Reference resources can be preempted by the base station The license-free spectrum resource is flexibly adjusted, so that the UE can accurately determine the channel state information that matches the channel corresponding to the unlicensed spectrum resource, improve the accuracy of channel state information measurement, and effectively ensure the data transmission efficiency of the unlicensed spectrum resource.

The measurement of the channel state information in the embodiment of the present invention is used in a wireless communication system, in particular, an LTE system for permitting access to a spectrum resource, that is, a licensed auxiliary access LTE system (English: Licensed-Assisted Access; abbreviation: LAA) LTE system. The LAA-LTE system refers to an LTE system that uses licensed spectrum resources and unlicensed spectrum resources through carrier aggregation (English: Carrier Aggregation; CA) or non-CA mode.

For example, the main application scenario is to use the licensed spectrum resource and the unlicensed spectrum resource through the CA mode, that is, the licensed spectrum resource or the carrier included in the licensed spectrum resource or the cell working on the licensed spectrum resource is used as the primary serving cell, and the license-free spectrum is to be used. The carrier included in the resource or the unlicensed spectrum resource or the cell working on the unlicensed spectrum resource is used as the secondary serving cell; and the primary serving cell and the secondary serving cell are deployed together, or the non-common base station is deployed, and the primary serving cell and the secondary serving cell There is an ideal return path between them.

The embodiment of the present invention is not limited to use in the scenario of the CA mode, and may also be used in other scenarios, for example, a serving cell that is independently deployed on the unlicensed spectrum resource, and the serving cell has the function of providing independent access. A serving cell that operates on licensed spectrum resources is required to assist. For example, in the scenario where there is no ideal backhaul path between the two serving cells (the primary serving cell and the secondary serving cell), for example, the backhaul delay is large, and the information cannot be quickly coordinated between the two serving cells.

The licensed spectrum resource or the unlicensed spectrum resource described in the embodiment of the present invention may include one or more carriers. When the licensed spectrum resource and the unlicensed spectrum resource are used for carrier aggregation, one or more of the licensed spectrum resources are included. Carrier carrier and unlicensed spectrum resources include one or more carriers for carrier aggregation.

The cell described in the embodiment of the present invention may be a cell corresponding to the base station, and the cell may belong to the macro base station, or may belong to the micro base station, for example, a base station corresponding to a small cell (English: Small Cell). The small cell here may further include: a metro cell (English: Metro Cell), a micro cell (English: Mico Cell), a pico cell (English: Pico Cell), a femto cell (English: Femto Cell) Etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

In the embodiment of the present invention, the concept of the carrier in the LTE system is the same as that of the cell. For example, the UE accesses one carrier and accesses one cell is equivalent. In the present invention, the concept of the cell is unified.

Description of the User Equipment: In the embodiment of the present invention, the user equipment may further include a relay relay, and the data communication between the base station and the base station may be regarded as a user equipment. In the embodiment of the present invention, the UE in a general sense is introduced.

The various embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is apparent that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a schematic flowchart diagram of a method for determining channel state information according to the present invention. The method can be as follows.

Step 101: The user equipment (English: User Equipment; abbreviation: UE) acquires indication information.

The indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource.

Optionally, the indication information may be sent by the base station through the unlicensed spectrum resource, and/or sent by the base station through the licensed spectrum resource.

It should be noted that the unlicensed spectrum resource used by the base station to send the indication information may be the first unlicensed spectrum resource that has been preempted, or may be the second unlicensed spectrum resource that has been preempted, which is not limited herein.

It should be noted that the first unlicensed spectrum resource and the second unlicensed spectrum resource are different unlicensed spectrum resources.

In step 101, the UE obtains indication information, including:

The first way:

The UE receives indication information that is sent by the base station by using the first unlicensed spectrum resource.

The indication information includes a time when the base station sends the indication information.

Specifically, the form of the indication information sent by the base station by using the first unlicensed spectrum resource Can contain at least one of the following information:

Preamble signal

Downlink control information (English: Downlink Control Information; DCI) carried by the physical downlink control channel (English: Physical Downlink Control Channel; abbreviation: PDCCH);

The DCI carried by the Enhanced Physical Downlink Control Channel (English: Enhanced Physical Downlink Control Channel; EPDCCH) is enhanced.

And if the indication information sent by the base station by using the first unlicensed spectrum resource is a preamble signal, the UE detects a preamble signal, and obtains indication information from the detected preamble signal.

It should be noted that, if the indication information is obtained by detecting the preamble signal, the UE determines whether the indication information is obtained by detecting the presence or absence of the preamble signal. That is, if the UE detects that the preamble signal exists, it indicates that the UE acquires the indication information, that is, the base station preempts the first unlicensed spectrum resource; or, if the base station passes the first license-free license The indication information sent by the spectrum resource is in the form of a preamble, and correspondingly, the “initiating the indication information that the UE sends the first unlicensed spectrum resource by the UE” may be understood as “the UE receives the indication” in the embodiment of the present invention. a preamble signal sent by the base station by using the first unlicensed spectrum resource, "the moment when the indication information includes the base station transmitting the indication information" may be understood as "the transmission time of the preamble signal, that is, the base station sends The time of the indication information, where the transmission time of the preamble signal may be any one of the time from the start time of the transmission of the preamble signal to the end time of the transmission of the preamble signal.

It should be noted that, if the indication information is obtained by detecting the preamble signal, the UE may obtain the indication information by detecting the signal sequence constituting the preamble signal by detecting the preamble signal to obtain the indication information.

It should be noted that the signal sequence of the preamble signal may include, but is not limited to, the following sequence forms: Constant Amplitude Zero Auto Correlation (CAZAC) sequence, binary sequence, m sequence, pseudo random sequence A sequence constituting a reference signal and a ZC (Zadoff-Chu) sequence in the LTE system.

The reference signals in the LTE system may include, but are not limited to, a primary synchronization signal (English: Primary Synchronization Signal; abbreviation: PSS), a secondary synchronization signal (English: Secondary Synchronization Signal; abbreviation: SSS), and a cell-specific reference signal (English: Cell-specific Reference Signal; abbreviated as: CRS), UE-specific reference signal (English: UE-specific Reference Signal) for physical downlink shared channel (English: Physical Downlink Shared Channel; abbreviation: PDSCH), used for enhancement Demodulation reference signal (English: Demodulation Reference Signal; abbreviation: DM-RS), positioning reference signal (English: Positioning Reference Signal; abbreviation: PRS), channel state information reference signal (English: Channel State Information Reference Signal; Abbreviation: CSI-RS), Discovery Reference Signal (English: Discovery Reference Signal; Abbreviation: DRS).

The preamble signal carrying the indication information may occupy an integer number of orthogonal frequency division multiplexing (OFDM) symbols in time, or may occupy a fraction of OFDM symbols in time, or may occupy the setting. A part of the OFDM symbol may also be an integer or fractional OFDM symbol occupying the set OFDM symbol; the preamble signal carrying the indication information is on each OFDM symbol occupied by each of the OFDM symbols occupied by the OFDM symbol, It is also possible to occupy the entire bandwidth of the unlicensed spectrum resource in the frequency domain, or to occupy part of the bandwidth of the unlicensed spectrum resource in the frequency domain, and further, the preamble signal carrying the indication information is on different OFDM symbols occupied by it or The bandwidth of the unlicensed spectrum resources occupied by the frequency domain may be different or different in different frequency OFDM symbols, and is not specifically limited herein.

It should be noted that the foregoing set OFDM symbol may include an OFDM symbol with a specific OFDM symbol index, for example, if the OFDM symbol adopts a normal Cyclic Prefix, then there are 14 OFDM symbols in one subframe. The OFDM symbol index may be any one of 0 to 13, corresponding to the first OFDM symbol to the 14th OFDM symbol in one subframe, and the OFDM symbol set at this time refers to the OFDM symbol with the OFDM symbol index #k. Where k can be any integer from 0 to 13. In the embodiment of the present invention, the OFDM symbol may be an OFDM symbol, or may be a plurality of consecutive or discontinuous OFDM symbols, which is not specifically limited herein.

It should be noted that when the current pilot signal is transmitted in multiple OFDM symbols in time, the UE may detect the preamble signal, and may also include detecting only a part of the preamble signal.

For example, the preamble signal is transmitted in time by using multiple OFDM symbols, and the UE may only detect the signal transmitted by one of the OFDM symbols to determine whether the base station preempts the unlicensed spectrum resource, and if the signal transmitted on the symbol is detected, Then, the base station can be preempted to preempt the unlicensed spectrum resource, and the starting position of the preamble signal transmission can be determined according to the position of the symbol in all OFDM symbols occupied by the preamble signal; further, according to the symbol occupied by the preamble signal The position in all OFDM symbols and the number of OFDM symbols occupied by the preamble signal can determine the end position of the preamble transmission. The above description also applies to the case where the preamble signal is transmitted in time using a plurality of fractional OFDM symbols. That is, if the indication information is obtained by detecting the preamble signal, the UE may obtain the indication information by detecting the signal of the preamble signal on the partial time resource, and further, by detecting the signal sequence constituting the "signal of the preamble signal on the partial time resource" Obtaining the indication information, where the time resource may be an OFDM symbol, a fractional OFDM symbol, or other time units, and is not specifically limited herein. The signal sequence herein is the same as described above, and is not described herein.

It should be noted that, in the embodiment of the present invention, the preamble signal carrying the indication information may be understood as a preamble signal. If the preamble signal exists, the indication information indicating that the base station has preempted the first unlicensed spectrum resource exists, that is, if the preamble signal exists, the indication information exists.

It should be noted that the role of the preamble signal may include at least one of the following: instructing the LTE device to preempt the unlicensed spectrum resource (or indicating that the LTE device can transmit data on the unlicensed spectrum resource), LTE cell identification, frequency coarse synchronization, time Coarse synchronization, frequency fine synchronization, time fine synchronization, CSI measurement, Auto Gain Control (AGC), etc.

In the embodiment of the present invention, the preamble signal carrying the indication information may be sent through the first unlicensed spectrum resource. Then, the UE detects the preamble signal, and determines whether the base station preempts the unlicensed spectrum resource by determining whether the preamble signal exists. If the UE detects the preamble signal, it is determined that the base station has preempted the unlicensed spectrum resource; if the UE has not detected the preamble signal, it is determined that the base station has not preempted the unlicensed spectrum resource.

If the indication information sent by the base station by using the first unlicensed spectrum resource is DCI, the UE detects the DCI, and obtains the indication information from the detected DCI.

That is to say, when the UE obtains the indication information, it can determine that the base station has seized the opportunity to use the unlicensed spectrum resource.

In the embodiment of the present invention, the DCI sent by the first unlicensed spectrum resource may be carried in the PDCCH sent by the first unlicensed spectrum resource, or may be carried in the first unlicensed spectrum resource. The EPDCCH may also be carried in another channel, such as a physical downlink traffic channel (PDSCH); the DCI transmitted by the first unlicensed spectrum resource may be sent at a carrier boundary of a first unlicensed spectrum resource or a subframe boundary of a cell, The transmission can start in the middle of the sub-frame.

It should be noted that the middle of the subframe herein refers to a subframe from any position included in the start boundary of the subframe to the end boundary of the subframe.

Further, it is also possible to start transmitting at a fixed OFDM symbol boundary in the middle of the subframe to reduce the blind detection responsibility of the UE.

It should be noted that the DCI herein may be located in a common search space, or may be located in a UE-specific search space, may be valid for a UE of a specific user group, or may be valid only for a single UE, or all UEs that can be served by the first cell. effective.

Further, in order to reduce UE blind detection complexity, the format and/or content of the DCI may be predefined, so that the UE can detect only DCI having a specific format and/or specific content without detecting. All possible DCI formats and / or all possible DCI content. Further, the starting position of the channel transmission carrying the DCI may also be predefined, that is, the starting position of the channel transmission carrying the DCI may be located at a set OFDM symbol boundary.

It should be noted that, the moment that the indication information includes the base station sending the indication information may include, but is not limited to, the following situations:

The first scenario: when the base station transmits the preamble signal through the first unlicensed spectrum resource when the first use of the first unlicensed spectrum resource is preempted, the time when the base station sends the preamble signal may be sent by the base station as the indication The moment of information.

In the embodiment of the present invention, the time at which the base station sends the preamble signal may be any time included in the start time of transmitting the preamble signal to the end time of transmitting the preamble signal.

It should be noted that, based on the data transmission delay between the UE and the base station, the time at which the UE detects the preamble signal can also be understood herein as the time at which the base station transmits the preamble signal.

As shown in FIG. 2, it is a schematic diagram of the time when the first unlicensed spectrum resource has been preempted as the initial transmission time of the preamble signal.

When the time at which the preamble signal is transmitted on the first unlicensed spectrum resource that the base station has preempted is the start boundary of the OFDM symbol, then the initial transmission time of the preamble signal is as shown in FIG. 3.

Specifically, after preempting the unlicensed spectrum resource, the base station sends a pre-occupied signal from the moment of preemption to the unlicensed spectrum resource to the time of waiting for the transmission of the preamble signal, and the primary role of the pre-occupied signal is to characterize the base station. The license-free spectrum resource is already occupied and can be detected by the user equipment. The main scenario corresponding to the pre-occupied signal is that the starting time of the data transmission on the unlicensed spectrum resource is predefined. For example, the starting time is a subframe boundary, a symbol boundary, and a slot boundary, where the data includes a preamble and a reference. Signal, control channel, data channel, etc. At the same time, the time at which the base station preempts the unlicensed spectrum resource is arbitrary, that is, it may be any time in a subframe, or may be any time in a symbol, or may be any time in a time slot. In the case that the base station waits for the unlicensed spectrum resource to wait for the start of the data transmission, in order to ensure the occupation of the unlicensed spectrum resource, the pre-emption signal may be sent within the above time range.

In the second case, the time at which the base station sends the indication information may also be the start time of the actual data transmission by the base station, which is later than the time to seize the opportunity to use the first license-free spectrum resource. The data actually transmitted here may include a PDCCH, a PDSCH, an EPDCCH, and the like.

The second way:

The UE receives cross-carrier signaling sent by the base station through the licensed spectrum resource and/or the second unlicensed spectrum resource that has been preempted.

The cross-carrier signaling includes indication information sent by the base station.

The UE acquires the indication information sent by the base station from the received cross-carrier signaling.

The indication information includes a time unit indicated by the base station.

That is, the LTE device (or the base station) can transmit cross-carrier signaling on the unlicensed spectrum resource/permitted spectrum resource when preempting the use of the unlicensed spectrum resource, so that the UE can obtain the cross-carrier signaling by detecting Instructions.

Specifically, the form of the cross-carrier signaling sent by the base station by using the licensed spectrum resource and/or the second unlicensed spectrum resource that has been preempted may include at least one of the following indication information, or the indication information herein may include At least one of the following:

DCI carried by the PDCCH;

DCI carried by the EPDCCH.

It should also be noted that the time unit indicated by the base station involved includes at least one of the following information:

a time at which the base station performs data transmission by using the first unlicensed spectrum resource;

The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.

It should be noted that the data herein may be a reference signal, data carried by the data channel, or may be a preamble signal. The reference signal may be as described above, and is not specifically limited in the embodiment of the present invention. The data channel may be a PDCCH, a PDSCH, an EPDCCH, a physical broadcast channel (English: Physical Multicast Channel; abbreviation: PMCH).

It should be noted that the time included in the time unit indicated by the base station may be a subframe boundary, a symbol boundary, or a slot boundary, as shown in FIG. 4, in a time unit indicated by the base station. The included time is a schematic diagram of a subframe boundary; as shown in FIG. 5, a schematic diagram of a time included in a time unit indicated by the base station is a symbol boundary.

It should be noted that FIG. 4 and FIG. 5 are an example in which the indication information is transmitted by the licensed spectrum resource, and the same applies to the case where the indication information is transmitted by the second license-free spectrum resource. In FIG. 4 and FIG. 5, the main role of the pre-occupied signal is to enable the base station to occupy the channel before the data starts to be transmitted after preempting the unlicensed spectrum resource, where the data may be a reference signal and data carried by the data channel. It can also be a preamble.

Optionally, in the embodiment of the present invention, before detecting the content carried by the cross-carrier signaling, the UE may The data of the first unlicensed spectrum resource is cached first, and then the content of the cross-carrier signaling bearer is detected, and the time unit indicated by the cross-carrier signaling may be located in the buffered data. This method of first post-buffer detection is particularly suitable for scenarios where data of the first unlicensed spectrum resource begins to be transmitted in the middle of the subframe.

The third method:

The UE receives control information that is sent by the base station by using the first unlicensed spectrum resource.

The control information includes indication information sent by the base station.

The UE acquires the indication information sent by the base station from the received control information.

The indication information includes a time unit indicated by the base station.

The control information here may be DCI or other information, which is not limited herein.

It should also be noted that the time unit indicated by the base station involved includes at least one of the following information:

a time at which the base station performs data transmission by using the first unlicensed spectrum resource;

The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.

The time at which the base station performs the data transmission by using the first unlicensed spectrum resource may be any time included in the time T1 to the time T2, where the time T1 may be preempted by the base station to the first At the time of the start of the licensed spectrum resource, the time T2 may correspond to the time when the base station ends the data transmission on the first unlicensed spectrum resource; the time T2 may also correspond to the base station not acquiring the first through the interception. In the case of an unlicensed spectrum resource transmission opportunity, the time corresponding to the maximum time of the first license-exempt spectrum resource may be used.

For example, if the base station preempts the first unlicensed spectrum resource at time T1 and does not need to re-listen to use the first unlicensed spectrum resource for a maximum time of x milliseconds, then time T2 can correspond (T1+ x milliseconds) corresponding time.

In other words, when the base station uses the first unlicensed spectrum resource to perform data transmission, the base station may use the first unlicensed spectrum resource after preempting the first unlicensed spectrum resource and ending using the first unlicensed spectrum resource. Any time included in the previous time period, during which the base station does not need to re-listen to obtain the use opportunity of the first unlicensed spectrum resource.

The time at which the base station performs data scheduling by using the first unlicensed spectrum resource by the base station may be a start time of the data scheduling of the UE by using the first unlicensed spectrum resource by the base station, for example, a subframe boundary. Orthogonal Frequency Division Multiplexing (OFDM) symbol boundary, slot boundary, and the like. The scheduled data may be PDSCH or the like. It should be noted that, in the embodiment of the present invention, before detecting the control information sent by the first license-free spectrum resource, the UE may first cache data of the first license-exempt spectrum resource, and then detect the first license-free license. The control information sent by the spectrum resource, the time unit indicated by the control information sent by the first license-free spectrum resource may be located in the cached data. This method of first post-buffer detection is particularly suitable for scenarios where data of the first unlicensed spectrum resource begins to be transmitted in the middle of the subframe.

Step 102: The UE determines a reference time point according to the obtained indication information.

The reference time point may be used to describe the time at which the base station transmits data on the first unlicensed spectrum resource after preempting the use of the unlicensed spectrum resource.

In this way, the UE lays a foundation for determining the accuracy of the channel state information when the data is transmitted for the first unlicensed spectrum resource preempted by the base station by determining the reference time point.

In step 102, the manner in which the UE determines the reference time point according to the obtained indication information includes but is not limited to:

The first way:

If the indication information includes the time when the base station sends the indication information, the determining, by the UE, the reference time point according to the obtained indication information, including:

And determining, by the UE, the reference time point according to the time that the obtained indication information includes the time when the base station sends the indication information.

Specifically, the time when the UE sends the indication information by the base station is determined as a reference time point.

It should be noted that, the indication information includes a time when the base station sends the indication information, where the time at which the base station sends the indication information may include, but is not limited to, the following situations:

The first case: when the base station seizes the opportunity to use the first license-free spectrum resource, The preamble signal is sent on the unlicensed spectrum resource, and the time at which the base station sends the preamble signal may be used as the time when the base station sends the indication information, where the time at which the preamble signal is sent may be the start time of the transmission preamble signal to the transmission preamble Any moment included in the end of the signal.

It should be noted that, based on the data transmission delay between the UE and the base station, the time at which the UE detects the preamble signal can also be understood herein as the time at which the base station transmits the preamble signal.

Specifically, the time when the base station sends the preamble signal may occupy an integer number of OFDM symbols on the time domain resource, may also occupy a fraction of OFDM symbols, may also occupy a part of the set OFDM symbol, or may be occupied in the set OFDM symbol. An integer number or fraction of OFDM symbols.

In the second case, the time at which the base station sends the indication information may also be the start time of the actual data transmission by the base station, which is later than the time to seize the opportunity to use the first license-free spectrum resource.

Specifically, the base station preempts the use of the first unlicensed spectrum resource by using energy detection and/or signal analysis, and the base station first sends the pre-occupied signal and then sends the indication information before transmitting the data.

Specifically, after preempting the unlicensed spectrum resource, the base station sends a pre-occupied signal before waiting for the start time of the data transmission from the moment of preemption to the unlicensed spectrum resource, and the main role of the pre-occupied signal is to represent the The base station has occupied the unlicensed spectrum resource and can be detected by the user equipment. When the pre-occupied signal corresponds to the main scenario, the start time of the data transmission is predefined, for example, a subframe boundary, a symbol boundary, and a slot boundary, and the time at which the base station preempts the unlicensed spectrum resource is arbitrary, that is, Any time in a subframe may be any time within a symbol, or may be any time in a time slot. In this case, the base station waits for data transmission after preempting the unlicensed spectrum resource. Before the start of the time, in order to ensure the occupation of the unlicensed spectrum resources, the pre-emption signal may be transmitted within the above time range.

It should be noted that the pre-occupied signal may be part of the preamble signal or other signals, which is not limited herein.

Therefore, the time when the base station sends the indication information may be that the base station is preempting the first. The time at which the preamble signal is transmitted when the spectrum resource is unlicensed; or the time when the base station actually transmits data when preempting the first unlicensed spectrum resource.

That is, the reference time point determined by the UE at the time when the base station sends the indication information includes but is not limited to:

The time at which the base station transmits the preamble signal when preempting the first unlicensed spectrum resource;

The starting time at which the base station actually transmits data when preempting the first unlicensed spectrum resource.

Optionally, the reference time point determined by the time when the UE sends the indication information by the base station may further include: a start time when the base station actually sends data when preempting the first license-free spectrum resource, and an end time of actually sending data. Any moment included in it.

Optionally, if the time when the base station sends the indication information is the start time of the data actually sent by the base station, the start time of the sent data is related to the sent data feature, for example, if the sent data is a preamble, The start time of the transmitted data may be the start boundary of the OFDM symbol; if the transmitted data is control data and/or service data, the start time of the transmitted data may be the start boundary of the subframe, or may be a time slot. The starting boundary.

For example, the control data and/or the service data may be: data carried by the PDCCH, data carried by the EPDCCH, data carried by the PDSCH, and data carried by the PMCH.

It should be noted that the starting time of sending data may also be adjusted according to the time when the base station preempts the first unlicensed spectrum resource. For example, the time when the base station preempts the first unlicensed spectrum resource is the start boundary of one subframe, and the base station sends the preamble signal before each time the data is sent, the base station sends the preamble signal from the boundary of the subframe, and sends the preamble signal. After the preamble signal ends, control data and/or service data are sent again; or,

The time when the base station preempts the first unlicensed spectrum resource is a start boundary of one subframe, and the base station starts from the start boundary of the subframe, simultaneously sends the preamble signal and the control data, or simultaneously sends the preamble signal and the service data, or Simultaneously transmit preamble signals, control data, and service data. At this time, when performing data transmission, the base station may orthogonally transmit the preamble signal, the control data, and the service data by means of frequency division multiplexing, code division multiplexing, or the like.

The second way:

If the indication information includes the time when the base station sends the indication information, the determining, by the UE, the reference time point according to the obtained indication information, including:

And determining, by the UE, a reference time point according to a correspondence between a preset reference time point and a time when the base station sends the indication information, and a time when the base station sends the indication information.

For example, a correspondence between a preset reference time point and a time when the base station sends the indication information is a predetermined time interval between a reference time point and a time when the base station sends the indication information, that is, The time at which the base station transmits the indication information at a predetermined time interval is used as a reference time point. Specifically, the reference time point may be a time corresponding to a predefined duration before the time when the base station sends the indication information; or may be a time corresponding to a predefined duration after the time when the base station sends the indication information, where Not limited.

For example, the preamble signal occupies 4 OFDM symbols in time, and the UE can determine that the base station preempts the unlicensed spectrum only by detecting the first signal transmitted in the second OFDM symbol, where the first signal is part of the preamble signal. Resources. That is to say, at this time, the time at which the base station transmits the indication information detected by the UE may be a time position at which the second OFDM symbol of the 4 OFDM symbols included in the preamble signal is located. For example, the symbol index of the second OFDM symbol indicates that the predefined duration may be 1 OFDM symbol, and the reference reference time point is before the time when the base station sends the indication information, then the UE may determine the reference time. The point is the first OFDM symbol of the 4 OFDM symbols occupied by the preamble signal; or the predefined duration may be 3 OFDM symbols, and the reference time point is defined by the base station transmitting the indication information. After the time, then the UE can determine that the reference time point is the time at which the leading position of the preamble signal corresponds in time. The reference time point shown in FIG. 6 may be a time point (including an initial transmission position and an end transmission position of the preamble signal) that can be recognized by any one of the UE from the initial transmission position to the end transmission position of the preamble signal, for example, OFDM symbol boundaries, fractional OFDM symbol boundaries, and the reciprocal of the sampling rate employed in an integer number of LTE systems.

It should be noted that the predefined duration may be represented by an integer number of OFDM symbols, or may be represented by using a fractional OFDM symbol, where the number of the fractional OFDM symbols may be one. It can be multiple.

It should be noted that, according to the correspondence between the preset reference time point and the time when the base station sends the indication information, and the acquired time when the base station sends the indication information, determining a reference time point may also be And OFDM symbol boundary, or a fractional OFDM symbol boundary, or a slot boundary or a subframe boundary, which is closest to the time when the base station transmits the indication information before or after the time when the base station sends the indication information, or a subframe boundary or a subframe boundary Time point.

It should be noted that, in the second mode, determining that the time at which the base station sends the indication information may include the two situations described in the first manner, and details are not described herein again.

The third way:

If the indication information includes the time unit indicated by the base station, the determining, by the UE, the reference time point according to the obtained indication information, including:

The UE determines a reference time point according to the time unit indicated by the base station included in the obtained indication information.

The time unit indicated by the base station includes at least one of the following information:

a time at which the base station performs data transmission by using the first unlicensed spectrum resource;

The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.

Generally, if the time unit indicated by the base station is a time when the base station performs data transmission by using the first unlicensed spectrum resource, as described above, it may be any time included in the time T1 to the time T2. The time T1 may correspond to a start time at which the base station preempts the first unlicensed spectrum resource, and the time T2 may correspond to a time when the base station ends data transmission on the first unlicensed spectrum resource; the time T2 may also be Corresponding to the time when the base station does not need to re-observe to acquire the first unlicensed spectrum resource transmission opportunity, the time corresponding to the maximum time of the first unlicensed spectrum resource may be used.

The time at which the base station performs data scheduling by using the first unlicensed spectrum resource by the base station may be a start time of the data scheduling of the UE by using the first unlicensed spectrum resource by the base station, for example, a subframe boundary. Orthogonal Frequency Division Multiplexing (OFDM) symbol boundary, slot boundary, and the like. The scheduled data may be PDSCH or the like.

Specifically, if the time unit indicated by the base station is a start time of data transmission by the base station by using the first unlicensed spectrum resource, the base station uses the first unlicensed spectrum resource to perform data transmission. The start time is at the subframe boundary, or at the slot boundary, or at a preset OFDM symbol boundary, which effectively reduces the complexity of the UE detecting blindly at the start time of the unlicensed spectrum resource transmission data.

If the time unit indicated by the base station is the time when the base station sends the preamble signal by using the first unlicensed spectrum resource, the base station uses the first unlicensed spectrum resource to perform data transmission at the start time of the OFDM symbol. The boundary, or at the fraction of OFDM symbol boundaries. Specifically, the time at which the base station sends the preamble signal by using the first unlicensed spectrum resource may start from a data transmission start position after the preemption to the unlicensed spectrum resource and the time closest to the preemption to the unlicensed spectrum resource ( For example: OFDM symbol boundary), ending at the beginning of the next nearest subframe boundary.

It should be noted that the time unit indicated by the base station may also be any identifiable time position between the start position of the transmitting preamble signal and the end position of the transmitting preamble signal, and the position that the UE can identify may be an OFDM symbol. The boundary, the fraction of OFDM symbol boundaries, and an integer multiple of the reciprocal of the sample rate.

Optionally, if the time unit indicated by the base station is any one of the UE identifiable time positions between the start position of the transmitting preamble signal and the end position of the transmitting preamble signal, the UE may perform the unlicensed spectrum before the indication information. The data that may be transmitted on the resource is buffered, and the indication information may be sent by using at least one of the following resources: a licensed spectrum resource, a second unlicensed spectrum resource that has been preempted, and a first license-free spectrum resource.

The fourth way:

The UE determines the time position indicated by the DCI carried by the PDCCH as a reference time point by detecting the PDCCH on the unlicensed spectrum resource. Or the UE determines the time position indicated by the DCI carried by the EPDCCH as a reference time point by detecting the EPDCCH on the unlicensed spectrum resource.

The time position indicated by the DCI may be the time position occupied by the PDCCH for transmitting the DCI, or may be the time position occupied by the EPDCCH to transmit the DCI, or may be the PDCCH indication. His time position may also be other time positions indicated by the EPDCCH, which is not limited herein.

Specifically, in order to reduce the complexity of UE blind detection, the time position of the PDCCH or EPDCCH on the unlicensed spectrum resource may be preset. For example, the starting position of the PDCCH is at a preset OFDM symbol boundary, or the starting position of the PDCCH is at the boundary of the subframe, or the starting position of the PDCCH is at the boundary of the slot, or the starting position of the PDCCH is in one subframe. A fixed position, for example, a fixed position may refer to a time position corresponding to a 1/N subframe length in one subframe, a time position corresponding to a 2/N subframe length in one subframe, and the like.

In addition, in order to reduce the complexity of the blind detection of the UE, the format of the PDCCH may be predefined, and the UE may detect the PDCCH by combining the starting location of the predefined PDCCH with the format of the predefined PDCCH; if at a predefined location When the PDCCH of the predefined format is detected, it may be determined that the base station preempts the unlicensed spectrum resource, and determines the starting position of the PDCCH, and uses the determined starting position of the PDCCH as the reference time point.

As shown in FIG. 7, it is a schematic diagram of the starting position of the PDCCH.

Step 103: The UE determines a reference resource according to the reference time point.

The reference resource is used to determine a channel state of the channel corresponding to the first unlicensed spectrum resource that the base station has preempted.

In step 103, the UE determines a reference resource according to the reference time point, and the reference resource may be a complete subframe in time.

It should be noted that the reference resource may include a time domain resource, and may also include a frequency domain resource, and may also include a code domain resource, which is not limited herein.

Specifically, the manner in which the UE determines the reference resource according to the reference time point includes but is not limited to:

The first way:

The UE selects, according to the reference time point, a time domain resource corresponding to a time unit that meets the first threshold by using a distance between the reference time points as a reference resource.

Wherein, setting the first threshold may be based on the closest distance value determined by the distance between the reference time points, or may be an integer number of OFDM symbols or fractional OFDM symbols, or may be other The form of expression is not limited here.

For example, the UE according to the reference time point, after the reference time point, the time domain resource corresponding to the time unit closest to the reference time point is used as a reference resource.

The UE uses, as the reference resource, a time domain resource corresponding to the time unit including the reference time point according to the reference time point.

The time unit referred to herein may be any one of a radio frame, a subframe, a slot, and an OFDM symbol.

In this way, since the determined reference time point is associated with the start time of the first unlicensed spectrum resource for data transmission, or the determined reference time point includes the first unlicensed spectrum resource for starting the data transmission, at the reference time. For a period of time after the point, the base station will use the first unlicensed spectrum resource to perform data transmission with the UE. Then, the time domain resource corresponding to the latest time unit after the reference time point or the time domain resource corresponding to a time unit including the reference time point is used as the reference resource, and the reference resource is ensured to be located at the base station and the UE. The unlicensed spectrum resource is within the time range of data communication, and at the same time, the reference resource is determined according to the principle of the nearest reference time point and the principle including the reference time point, and the UE uses the reference resource to perform the channel corresponding to the first unlicensed spectrum resource. During measurement, it is not necessary to obtain the time when the first unlicensed spectrum resource is actually occupied, save signaling overhead, reduce the content detected by the UE, and help improve the measurement accuracy of the channel state information.

It should be noted that, in the embodiment of the present invention, the determined reference resource is mainly described from the perspective of the time domain resource, and the resource occupied by the reference resource in the frequency domain, for example, the first unlicensed spectrum resource in the time domain. All of the corresponding frequency resources in the resource are still partially limited, and are not specifically limited in the embodiment of the present invention.

The second way:

The UE receives resource information sent by the base station for reporting channel state information.

The resource information includes a time domain resource.

The UE determines the reference resource according to the time domain resource included in the resource information and the time domain resource corresponding to the reference time point.

It should be noted that the time domain resource corresponding to the reference time point described herein may be a time domain resource corresponding to a time unit including the reference time point, or may be a time unit corresponding to the latest reference time point. The time domain resources are not specifically limited here. The time unit is the same as the above, and may be any one of a radio frame, a subframe, a time slot, and an OFDM symbol. Correspondingly, the time domain resource corresponding to the time unit may be a time domain resource included in the radio frame. The time domain resources included in the frame, the time domain resources included in the time slots, and the time domain resources included in the OFDM symbols are not described herein.

The time point corresponding to the time domain resource included in the reference resource lags behind the reference time point. It should be noted that, if the time domain resource included in the reference resource is a time domain resource corresponding to one subframe, the time point corresponding to the time domain resource included in the reference resource may be a start boundary of the subframe to the Any time period between the end boundaries of the subframes; if the time domain resource included in the reference resource is a time domain resource corresponding to the time slot, the time point corresponding to the time domain resource included in the reference resource may be Any time included between a start boundary of the time slot and an end boundary of the time slot; if the time domain resource included in the reference resource is a time domain resource corresponding to multiple OFDM symbols, then the reference resource includes time The time point corresponding to the domain resource may be any time included between the start boundary of the plurality of OFDM symbols and the end boundary of the plurality of OFDM symbols.

The time that the UE receives the time domain resource included in the resource information for reporting the channel state information sent by the base station may be within a time range in which the base station preempts the use opportunity of the first license-free spectrum resource, or It is outside the range where the base station does not seize the opportunity to use the first license-free spectrum resource.

The time corresponding to the reference resource determined by the UE may be within a time range in which the base station preempts the use opportunity of the first license-free spectrum resource.

The time domain resources included in the resource information may be represented by subframes, or may be other representation forms, such as OFDM symbol representation, slot representation, radio frame representation, and the like.

The frequency domain resource included in the resource information includes a frequency domain resource corresponding to a frequency position occupied by the UE reporting channel state information, and includes an integer number of consecutive or non-contiguous subcarriers, an integer number of consecutive or non-contiguous resource elements. :Resource Element; Abbreviation: RE), integer number of assets The source block (English: Resource Block: RB) and the like are not specifically limited in the embodiment of the present invention.

The manner in which the UE receives the resource information for reporting the channel state information sent by the base station may include physical layer signaling, RRC signaling, MAC signaling, and the like.

It should be noted that, the UE receiving the resource information for reporting the channel state information sent by the base station may be implemented in step 103, or may be implemented before, during or after step 101 or step 102, where No specific restrictions.

Specifically, the UE selects a time domain resource that meets the set condition as a reference resource from a time domain resource corresponding to the reference time point to all time domain resources included in the time domain resource included in the resource information. .

It should be noted that, assuming that the time unit in which the time domain resource corresponding to the reference time point is located may be represented by a subframe, for example, a subframe index of a subframe used by a time unit corresponding to the time domain resource corresponding to the reference time point. The time unit of the time domain resource included in the resource information may also be represented by a subframe, for example, the subframe index used by the time unit in which the time domain resource is included in the resource information. a subframe of #m, where both the subframe index #k and the subframe index #m can be represented by a radio frame index and a slot index, that is,

Figure PCTCN2015076339-appb-000001
Here, n f represents a radio frame index, and the value ranges from 0 to 10239, and n s represents a slot index, and the value ranges from 0 to 19.
Figure PCTCN2015076339-appb-000002
Indicates rounding down x. Then, all the time domain resources included between the time domain resource corresponding to the reference time point and the time domain resource included in the resource information may include starting from a subframe with a subframe index of #k to a subframe index. The subframe of #m ends, and all the included subframes contain time domain resources.

Wherein the setting condition includes at least one of the following conditions:

Condition 1: The distance between the time domain resource included in the resource information meets the set second threshold, and is located after the time domain resource corresponding to the reference time point, and is located in the time domain included in the resource information. Before the resource.

The second threshold set here may satisfy that the UE determines channel state information from the reference resource to The time required to report the channel state information may be, for example, four subframe lengths, or two subframe lengths.

Condition 2: The distance between the time domain resource included in the resource information is greater than the distance between the time domain resources corresponding to the reference time point.

This has the advantage that the reference resource for determining the channel state information can be guaranteed to be closer to the reference time point, and the determined channel state information is closer to the channel state information corresponding to the preemption of the unlicensed spectrum resource.

Condition 3: if the determined number of reference time points is at least two, the time domain resource corresponding to the reference time point whose distance between the time domain resources included in the resource information is less than a set threshold value As a reference resource.

It should be noted that, for the third condition, the time domain resource corresponding to the reference time point closest to the time domain resource included in the resource information may be selected as the reference resource.

It should be noted that, in the embodiment of the present invention, the reference resource is located in a time range of the first unlicensed spectrum resource that the base station has preempted.

The advantage of this is that the reference resource for determining the channel state information is closer to the time domain resource included in the resource information, because the base station can utilize the channel state reported by the UE in the time domain resource included in the resource information. Information, data scheduling for the UE, for example, selecting a suitable modulation and coding scheme (English: Modulation Coding Scheme; abbreviation: MCS), so the time domain resource corresponding to the reference time point closest to the time domain resource included in the resource information is used as The reference resource can ensure that the channel state information reported by the UE is closer to the corresponding channel state information after the resource time is reported, so that the base station can select the channel state information reported by the UE when scheduling the UE data by using the resource after the resource time. Channel state information that is closer to the data scheduling time. For example, the base station uses the preempted unlicensed spectrum resource for data transmission in a continuous time between time t1 and time t2, and the first reference time point determined by the UE is located in the continuous time; the base station is continuous between time t3 and time t4. The second reference time point determined by the UE is located in the continuous time, and the time domain resource included in the resource information determined by the UE is at time t5, where t1, t2, and t3 are used for data transmission. , t4, t5 represents the moment from front to back, root According to the condition 3, the second reference time point determined between the time t3 and the time t4 is closer to the time t5, so the time domain resource corresponding to the second reference time point can be used as the reference resource.

It should be noted that, the setting of the first threshold, the setting of the second threshold, and the setting of the threshold may be determined according to experimental data, or may be determined according to actual needs, and the implementation manner is not limited herein.

Step 104: The UE determines channel state information of the channel corresponding to the first unlicensed spectrum resource according to the reference resource, and sends the determined channel state information to the base station.

In step 104, when the time difference between the time corresponding to the time domain resource included in the reference resource and the time corresponding to the time domain resource included in the resource information is less than a third threshold, And determining channel state information of the channel corresponding to the first unlicensed spectrum resource by performing measurement on the reference resource.

It should be noted that, in the embodiment of the present invention, the time domain resource included in the reference resource may be a time domain resource corresponding to a time unit that includes a reference resource, where the time unit is the same as above, and may be a radio frame or a subframe. Any one of a time slot and a OFDM symbol; correspondingly, the time domain resource corresponding to the time unit of the reference resource may be a time domain resource included in the radio frame, a time domain resource included in the subframe, and a time included in the time slot The time domain resource included in the OFDM symbol, and the time corresponding to the time domain resource included in the reference resource may be represented by at least one of the following: a radio frame index, a subframe index, a slot index, and an OFDM index. . On the other hand, in the embodiment of the present invention, the time domain resource included in the resource information may be represented by a subframe, or may be other representation forms, such as: OFDM symbol representation, time slot representation, radio frame representation, etc., corresponding The time corresponding to the time domain resource included in the resource information may be represented by at least one of the following: a subframe index, an OFDM symbol index, a slot index, and a radio frame index. The time difference between the time corresponding to the time domain resource included in the reference resource and the time corresponding to the time domain resource included in the resource information may be represented by at least one of the following: an integer number of subframes An integer number of OFDM symbols, an integer number of time slots, an integer number of radio frames, or may also be represented by an integer number of sample rate reciprocals, wherein assuming that the reciprocal of the sample rate can be represented by Ts, then 15360*Ts = 0.5 milliseconds. In an embodiment of the present invention, the third threshold may also be represented by at least one of the following: an integer number of subframes, an integer number of OFDMs Symbol, integer time slot, integer number of radio frames, integer countdown of sample rate.

Specifically, the UE determines, according to the reference resource, a time domain resource and a frequency domain resource that are included in the reference resource, where the UE measures the determined time domain resource and/or the frequency domain resource, and Determining the channel state information of the unlicensed spectrum resource corresponding channel according to the measurement result, and determining that the reference domain resource includes the frequency domain resource by using other methods, such as pre-defined, standard protocol specification, physical layer signaling, RRC signaling, The MAC notification and the like make the UE aware.

Specifically, the UE performs channel measurement and/or interference measurement on the determined time domain resources respectively;

And/or, the UE performs channel measurement and/or interference measurement on the determined frequency domain resources, respectively.

Determining channel state information of the unlicensed spectrum resource corresponding channel according to the channel measurement result and/or the interference measurement result.

When the time difference between the time corresponding to the time domain resource included in the reference resource and the time corresponding to the time domain resource included in the resource information is not less than a third threshold, the configured The channel state information of the licensed spectrum resource corresponding channel is used as the channel state information of the channel corresponding to the first unlicensed spectrum resource.

The channel state information of the channel corresponding to the unlicensed spectrum resource configured by the UE includes:

The UE receives the specific signaling sent by the base station.

The specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.

The form of the specific signaling includes at least one of the following signaling forms:

Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.

Alternatively, the specific signaling may also be determined by a standard protocol in a predefined manner, so that the UE determines channel state information of the channel corresponding to the configured unlicensed spectrum resource.

Optionally, the determining, by the UE, the channel state information of the channel corresponding to the unlicensed spectrum resource, including:

The UE receives the indication information sent by the base station.

The indication information includes a channel state of a channel corresponding to the configured unlicensed spectrum resource. information.

Optionally, when the time difference between the time corresponding to the time domain resource included in the reference resource and the time corresponding to the time domain resource included in the resource information is not less than a third threshold, Obtaining channel state information of the channel corresponding to the first unlicensed spectrum resource according to the correspondence between the configured reference resource and the channel state information of the unlicensed spectrum resource corresponding channel and the determined reference resource.

That is to say, the base station may configure a plurality of reference resources to correspond to one channel state information, and may also configure one reference resource to correspond to one channel state information, which is not specifically limited herein.

In the embodiment of the present invention, the channel state information of the channel corresponding to the first unlicensed spectrum resource may be represented by an index corresponding to the channel state information, for example, by using a channel quality indicator (English: Channel Quality Indicator, abbreviation: The CQI) index indicates that the channel state information of the configured unlicensed spectrum resource corresponding channel may be represented by a specific CQI index in an existing LTE system, for example, CQI index 0, CQI index 1, or other CQI index, optionally The configured CQI index can satisfy that if the base station uses the channel state information corresponding to the configured CQI index to schedule the UE, the data transmission between the base station and the UE, for example, the initial transmission success rate of the downlink data transmission is not lower than a certain one. Threshold, for example 90%.

Optionally, the specific CQI index may also be different from the CQI index supported by the existing LTE system, and may be represented by a specific CQI index, and the UE reports the reference resource and the specific CQI index of the reported resource corresponding to the specific CQI index. The time difference between the resources is not less than the set third threshold. The base station may confirm that the channel state information determined by the reference resource corresponding to the currently reported resource is inaccurate according to the specific CQI index, or the reference resource and the reported resource The time difference between them is not less than the set third threshold. In particular, the specific CQI index may be different from the CQI index 0 supported in the existing LTE system, because currently, if the UE reports the CQI index 0, especially when the CQI index 0 is reported to the secondary serving cell, the secondary serving cell is dependent. The base station can determine that the radio link detection (English: Radio Link Monitoring, abbreviated as: RLM) of the secondary serving cell fails. Therefore, if the CQI index 0 is multiplexed, the base station may misjudge the secondary service cell radio link failure, so Introducing a specific CQI index different from CQI index 0 so that the base station can not only correctly judge Whether the secondary serving cell fails the radio link, and the relationship between the time difference between the reported resource and the reference resource corresponding thereto and the set third threshold may also be determined.

Specifically, the manner in which the UE sends the determined channel state information to the base station includes, but is not limited to, the following manners:

The first way:

The UE periodically reports the determined channel state information.

Specifically, it is assumed that, in step 103, the reference resource is determined in a manner that satisfies the condition 3, and channel state information between the base station and the UE is obtained according to the determined reference resource, as shown in FIG. Schematic diagram of the location of the resource.

It can be seen from FIG. 8 that the time resource for reporting the channel state information may be located in the licensed spectrum resource or in the license-free spectrum resource, and is represented by time resource 1, time resource 2, and time resource 3, respectively.

The shaded portions labeled "4" and "5" indicate the time position at which the base station preempts the unlicensed spectrum resource, wherein the resources corresponding to the time positions of "4" and "5" include reference resources.

When the UE reports the channel state information on the time resource 1, the channel state information may be determined according to the reference resource included in the nearest "4" of the time resource 1. The manner in which the channel state information is determined is that the UE can use the time resource "4". Reference resources included in the channel for channel and/or interference measurements;

Similarly, when reporting the channel state information on the time resource 2, the UE may determine the channel state information according to the reference resource included in the nearest “5” of the time resource 2;

Further, the UE may also jointly determine channel state information by using reference resources included in “4” and “5”, for example, averaging measurement results (eg, interference I) of reference resources corresponding to “4” and “5”.

When the UE reports the channel state information on the time resource 3, the time interval between the time resource "5" and the time resource "3" closest to the time resource 3 exceeds the third threshold. At this time, the UE may report on the time resource 3. A configured channel state information.

The advantage of this is that if the nearest reference resource and the reported resource are reported from the resource If the time interval exceeds the third threshold, the UE indicates that the channel state information is obtained according to the reference resource measurement, and the determined channel state information is reported, because the channel state information is based on the reference resource and the reported resource. The time interval is too long, and the reported channel state information cannot reflect the channel state between the base station and the UE on the unlicensed spectrum after the reporting of the resource. Therefore, in order to save the operation of the UE, in this case, the UE may not perform the channel state. The information is measured, and the configured channel state information is directly reported.

It should be noted that, for the reporting resource 6 that appears after the resource 3 is reported, if the reference resource that is valid for the reporting resource 6 can be found, for example, the reference resource closest to the reporting resource 6 (located in the time resource “7”) and the reported resource The inter-time interval does not exceed the third threshold, and the UE may perform channel and/or interference measurement according to the reference resource included in "7" as described in FIG. 9, and determine channel state information to be reported in the reporting resource 6. For the LTE system, the channel state information reported by the UE in the time series may have some connection, for example, the UE calculates the CQI according to the RI or the PMI. Then, the channel state information reported by the UE on the reporting resource 6 may be related to the channel state information of the previous configuration, or may be irrelevant.

Specifically, for the scenario shown in FIG. 9, there may be a problem that the channel state information reported by the UE on the reporting resource 3 indicates the full-band channel state information, and the reference resource closest to the reporting resource 3 (located in the time resource "5" The distance between the reporting resource and the reporting resource "3" exceeds the third threshold. Therefore, the rank indication (English: Rank Indication; RI) reported by the reporting resource 3 is configured channel state information, and the UE reports the reported resource 6 at this time. The precoding matrix indication (English: Precoding Matrix Indicator: PMI) and/or CQI may be calculated based on the configured RI reported by the reporting resource 3, or may be recalculated based on the reference resource included in the “7”, and based on The recalculated RI calculates PMI and/or CQI information.

Correspondingly, in reporting the resource 6, the UE may report the RI recalculated based on the "7", and then report the PMI and/or the CQI to other reported resources after the resource 6 is reported, or the UE may directly refer to the "7". The recalculated channel state information includes PMI, RI, and CQI for reporting. In this manner, if the UE recalculates the channel state information based on the reference resource included in the time resource "7", the channel state corresponding to the reference resource included in the time resource "5" is not utilized. The information also needs to inform the eNB to adopt the above reporting method.

The second way:

The UE reports the determined channel state information aperiodically.

Specifically, the specific manner in which the UE periodically reports the channel state information is similar to the specific manner in which the channel state information is periodically reported.

However, for a CA-capable UE, the base station may configure the UE to have multiple serving cells through RRC signaling, and the base station may trigger the UE to report the channel measured by the multiple serving cells by using the aperiodic channel state information triggering signaling. status information.

For the serving cell carrying the aperiodic channel state information triggering signaling, the unlicensed spectrum resource is preempted, and for other serving cells indicated in the trigger signaling, due to the random use of the unlicensed spectrum resource, the preemption may not be preempted. The spectrum resource is allowed. Therefore, for other serving cells that do not preempt the unlicensed spectrum resources and are also reported to trigger the channel state information, the UE also needs to determine the channel state information by using the method for determining the reference resource mentioned in the embodiment of the present invention.

With the solution of the embodiment of the present invention, the UE obtains the indication information, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource; and according to the obtained indication information, the reference time point is determined; according to the reference time And determining a reference resource, where the reference resource is used to measure a channel state of the channel corresponding to the first unlicensed spectrum resource that has been preempted; and determining, according to the reference resource, a channel of the channel corresponding to the first unlicensed spectrum resource Status information, and the determined channel state information is sent to the base station. In this way, in the case of the use of the license-free spectrum resource, the UE determines the reference time point according to the indication information sent by the base station in real time, and then determines the reference resource used for measuring the channel state of the channel corresponding to the unlicensed spectrum resource preempted by the base station, so that the determination is made. The reference resource can be flexibly adjusted according to the unlicensed spectrum resources preempted by the base station, so that the UE can accurately determine the channel state information that matches the channel corresponding to the unlicensed spectrum resource, improve the accuracy of channel state information measurement, and effectively ensure the use. Data transfer efficiency of license-free spectrum resources.

FIG. 10 is a schematic flowchart diagram of a method for determining channel state information according to an embodiment of the present invention. The execution subject of the embodiment of the present invention is a base station, and the method is as follows.

Step 1001: The base station sends indication information to the UE.

The indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource.

In step 1001, the base station sends the indication information to the UE, including:

The first way:

The base station sends the indication information to the UE by using the first unlicensed spectrum resource, where the indication information includes a moment when the base station sends the indication information.

The second way:

The base station transmits cross-carrier signaling to the UE by granting spectrum resources and/or preempted second unlicensed spectrum resources.

The cross-carrier signaling includes indication information sent by the base station, where the indication information includes a time unit indicated by the base station.

The third way:

The base station sends control information to the UE by using the first unlicensed spectrum resource.

The control information includes indication information sent by the base station, where the indication information includes a time unit indicated by the base station.

The time unit indicated by the base station includes at least one of the following information:

a time at which the base station performs data transmission by using the first unlicensed spectrum resource;

The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.

Optionally, the indication information includes at least one of the following information:

Preamble signal

DCI carried by the PDCCH;

DCI carried by the EPDCCH.

Optionally, before the sending, by the base station, the indication information to the UE, the method further includes:

The base station sends resource information for reporting channel state information to the UE, where the resource information includes a time domain resource.

Step 1002: The base station receives channel state information sent by the UE.

The channel state information includes channel state information of the first unlicensed spectrum resource corresponding channel, where the channel state information is determined by the UE according to the received indication information. And determining a reference resource according to the reference time point, and determining according to the reference resource.

In step 1002, the method further includes:

The base station sends specific signaling to the UE, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.

Optionally, the specific signaling includes at least one of the following signaling forms:

Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.

It should be noted that, in the embodiment of the present invention, the reference resource may be located after the base station preempts the first unlicensed spectrum resource and releases the first unlicensed spectrum resource. The time-frequency resources included are particularly suitable for determining that the base station uses the first unlicensed spectrum to be a corresponding CSI.

FIG. 11 is a schematic structural diagram of a device for determining channel state information according to an embodiment of the present invention. The determining device includes: an obtaining unit 1101, a determining unit 1102, and a sending unit 1103, where:

The obtaining unit 1101 is configured to obtain indication information, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource;

a determining unit 1102, configured to determine a reference time point according to the indication information acquired by the acquiring unit 1101; and determine a reference resource according to the reference time point, where the reference resource is used to determine that the base station has been determined Preempting the channel state of the first unlicensed spectrum resource corresponding channel;

The sending unit 1103 is configured to determine, according to the reference resource, channel state information of the channel corresponding to the first unlicensed spectrum resource, and send the determined channel state information to the base station.

Specifically, the acquiring unit 1101 is specifically configured to receive indication information that is sent by the base station by using the first unlicensed spectrum resource, where the indication information includes a time when the base station sends the indication information;

The determining unit 1102 is specifically configured to determine, according to the time when the indication information acquired by the acquiring unit 1101 includes the indication information sent by the base station, the reference time point.

Specifically, the determining unit 1102 is configured according to the indication acquired by the acquiring unit 1101 The information includes the time when the base station sends the indication information, and determines a reference time point, including:

The time at which the base station transmits the indication information is determined as a reference time point.

Specifically, the determining unit 1102, according to the time when the indication information acquired by the acquiring unit 1101 includes the time when the base station sends the indication information, determines a reference time point, and includes:

And determining a reference time point according to a correspondence between a preset reference time point and a time when the base station sends the indication information, and a time when the acquired base station sends the indication information.

Specifically, the acquiring unit 1101 is specifically configured to receive cross-carrier signaling that is sent by the base station by using the licensed spectrum resource and/or the second unlicensed spectrum resource that is preempted, where the cross-carrier signaling includes the The indication information sent by the base station;

Determining, by the received cross-carrier signaling, the indication information sent by the base station, where the indication information includes a time unit indicated by the base station;

The determining unit 1102 is specifically configured to determine a reference time point according to the time unit indicated by the base station included in the indication information acquired by the acquiring unit 1101.

Specifically, the acquiring unit 1101 is specifically configured to receive control information that is sent by the base station by using the first unlicensed spectrum resource, where the control information includes indication information sent by the base station;

Acquiring, by the received control information, the indication information sent by the base station, where the indication information includes a time unit indicated by the base station;

The determining unit 1102 is specifically configured to determine a reference time point according to the time unit indicated by the base station included in the indication information acquired by the acquiring unit 1101.

Optionally, the time unit indicated by the base station includes at least one of the following information:

a time at which the base station performs data transmission by using the first unlicensed spectrum resource;

The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.

Optionally, the indication information includes at least one of the following information:

Preamble signal

Downlink control information DCI carried by the physical downlink control channel PDCCH;

The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.

Specifically, the determining unit 1102 is specifically configured to use, according to the reference time point, a time domain resource corresponding to a time unit that includes the reference time point as a reference resource.

Specifically, the determining unit 1102 is specifically configured to select, according to the reference time point, a time domain resource corresponding to a time unit that is smaller than a first time threshold by using the reference time point as a reference resource.

Specifically, the determining unit 1102, according to the reference time point, selecting a time domain resource corresponding to a time unit that is less than a time unit of the first time threshold as the reference resource, includes:

According to the reference time point, a time domain resource corresponding to a time unit closest to the reference time point is selected as a reference resource.

Specifically, the acquiring unit 1101 is further configured to receive, by the base station, resource information, used to report channel state information, where the resource information includes a time domain resource;

The determining unit 1102 is specifically configured to determine a reference resource according to the time domain resource included in the resource information received by the acquiring unit and the time domain resource corresponding to the reference time point, where the reference resource is The time point corresponding to the included time domain resource lags behind the reference time point.

Specifically, the determining unit 1102 determines the reference resource according to the time domain resource included in the resource information received by the acquiring unit and the time domain resource corresponding to the reference time point, and includes:

A time domain resource that satisfies the set condition is selected as a reference resource from among the time domain resources corresponding to the reference time point to all the time domain resources included between the time domain resources included in the resource information.

Optionally, the setting condition includes at least one of the following conditions:

Condition 1: The distance between the time domain resource included in the resource information meets the set second threshold, and is located after the time domain resource corresponding to the reference time point, and is located in the time domain included in the resource information. Before the resource;

Condition 2: a distance between the time domain resource included in the resource information is greater than a distance between the time domain resources corresponding to the reference time point;

Condition 3: if the determined number of reference time points is at least two, the time domain corresponding to the reference time point whose distance between the time domain resources included in the resource information is less than a set threshold value The source is used as a reference resource.

Specifically, the sending unit 1103 is specifically configured to: when a time difference between a time corresponding to the time domain resource included in the reference resource and a time corresponding to the time domain resource included in the resource information is smaller than a setting And determining the channel state information of the channel corresponding to the first unlicensed spectrum resource by performing measurement on the reference resource.

Specifically, the sending unit 1103, by performing measurement on the reference resource, determining channel state information of the channel corresponding to the first unlicensed spectrum resource, including:

Determining, according to the reference resource, a time domain resource and a frequency domain resource included in the reference resource;

And measuring the determined time domain resource and/or the frequency domain resource, and determining channel state information of the unlicensed spectrum resource corresponding channel according to the measurement result.

Specifically, the sending unit 1103 performs measurement on the determined time domain resource and/or the frequency domain resource, including:

Performing channel measurement and/or interference measurement on the determined time domain resources respectively;

and / or,

Channel measurement and/or interference measurement are performed separately for the determined frequency domain resources.

Specifically, the sending unit 1103 is specifically configured to: when a time difference between a time corresponding to the time domain resource included in the reference resource and a time corresponding to the time domain resource included in the resource information is not less than a setting When the third threshold is used, the channel state information of the configured unlicensed spectrum resource corresponding channel is used as the channel state information of the first unlicensed spectrum resource corresponding channel.

Specifically, the acquiring unit 1101 is further configured to receive the specific signaling sent by the base station, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.

Optionally, the specific signaling includes at least one of the following signaling forms:

Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.

It should be noted that the determining device in the embodiment of the present invention may be a user device, or may be another terminal device, or may be a logical component in the user device; may be implemented by software, or may be implemented by hardware. There is no limit here.

FIG. 12 is a schematic structural diagram of a device for determining channel state information according to an embodiment of the present invention; Figure. The determining device includes: a sending unit 1201 and a receiving unit 1202, where:

The sending unit 1201 is configured to send the indication information to the user equipment UE, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource;

The receiving unit 1202 is configured to receive channel state information that is sent by the UE, where the channel state information includes channel state information of the first unlicensed spectrum resource corresponding channel, where the channel state information is Receiving the indication information to determine a reference time point, and determining a reference resource according to the reference time point, determined according to the reference resource.

Specifically, the sending unit 1201 is specifically configured to send the indication information to the UE by using the first unlicensed spectrum resource, where the indication information includes a moment when the base station sends the indication information.

Specifically, the sending unit 1201 is specifically configured to send cross-carrier signaling to the UE by using a licensed spectrum resource and/or a pre-empted second unlicensed spectrum resource, where the cross-carrier signaling includes The indication information sent by the base station, where the indication information includes a time unit indicated by the base station.

Specifically, the sending unit 1201 is configured to send, by using the first unlicensed spectrum resource, control information to the UE, where the control information includes indication information sent by the base station, where the indication information is included. A time unit indicated by the base station is included.

Optionally, the time unit indicated by the base station includes at least one of the following information:

a time at which the base station performs data transmission by using the first unlicensed spectrum resource;

The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.

Optionally, the indication information includes at least one of the following information:

Preamble signal

Downlink control information DCI carried by the physical downlink control channel PDCCH;

The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.

Optionally, the sending unit 1201 is further configured to: before sending the indication information to the UE, send resource information for reporting channel state information to the UE, where the resource information includes a time domain resource.

Optionally, the sending unit 1201 is further configured to send specific signaling to the UE, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.

Optionally, the specific signaling includes at least one of the following signaling forms:

Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.

It should be noted that the determining device in the embodiment of the present invention may be a base station device, or may be a logical component in the base station device, and may be implemented in a software manner or in a hardware manner, which is not limited herein.

FIG. 13 is a schematic structural diagram of a device for determining channel state information according to an embodiment of the present invention. The determining device includes a signal receiver 1301, a processor 1302, and a signal transmitter 1303, wherein the signal receiver 1301, the processor 1302, and the signal transmitter 1303 can be connected through a communication bus 1304.

The signal receiver 1301 is configured to obtain indication information, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource;

The processor 1302 is configured to determine, according to the obtained indication information, a reference time point, and determine, according to the reference time point, a reference resource, where the reference resource is used to determine that the base station has preempted the And determining, by the first unlicensed spectrum resource, a channel state of the channel; determining, according to the reference resource, channel state information of the channel corresponding to the first unlicensed spectrum resource;

The signal transmitter 1303 is configured to send the determined channel state information to the base station.

Specifically, the signal receiver 1301 is specifically configured to receive indication information that is sent by the base station by using the first unlicensed spectrum resource, where the indication information includes a time when the base station sends the indication information.

The processor 1302 is specifically configured to determine a reference time point according to the time that the obtained indication information includes the time when the base station sends the indication information.

Specifically, the determining, by the processor 1302, the reference time point according to the obtained indication information, where the base station sends the indication information, includes:

The time at which the base station transmits the indication information is determined as a reference time point.

Specifically, the processor 1302 includes the base station according to the obtained indication information. When the indication information is sent, the reference time point is determined, including:

And determining a reference time point according to a correspondence between a preset reference time point and a time when the base station sends the indication information, and a time when the acquired base station sends the indication information.

Specifically, the signal receiver 1301 is specifically configured to receive cross-carrier signaling sent by the base station by using a licensed spectrum resource and/or a second unlicensed spectrum resource that has been preempted, where the cross-carrier signaling is used. Including indication information sent by the base station;

Determining, by the received cross-carrier signaling, the indication information sent by the base station, where the indication information includes a time unit indicated by the base station;

The determining, by the processor 1302, the reference time point according to the obtained indication information, including:

Determining a reference time point according to the time unit indicated by the base station included in the obtained indication information.

Specifically, the signal receiver 1301 is configured to receive control information that is sent by the base station by using the first unlicensed spectrum resource, where the control information includes indication information sent by the base station;

Acquiring, by the received control information, the indication information sent by the base station, where the indication information includes a time unit indicated by the base station;

The determining, by the processor 1302, the reference time point according to the obtained indication information, including:

Determining a reference time point according to the time unit indicated by the base station included in the obtained indication information.

Optionally, the time unit indicated by the base station includes at least one of the following information:

a time at which the base station performs data transmission by using the first unlicensed spectrum resource;

The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.

Optionally, the indication information includes at least one of the following information:

Preamble signal

Downlink control information DCI carried by the physical downlink control channel PDCCH;

The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.

Optionally, the determining, by the processor 1302, the reference resource according to the reference time point, including:

According to the reference time point, a time domain resource corresponding to the time unit including the reference time point is used as a reference resource.

Optionally, the determining, by the processor 1302, the reference resource according to the reference time point, including:

Determining, according to the reference time point, a time domain resource corresponding to a time unit of the reference time point that is smaller than a time unit for setting the first threshold as a reference resource.

Optionally, the processor 1302, according to the reference time point, selects a time domain resource corresponding to a time unit that is less than a time unit of the first threshold by using the reference time point as a reference resource, and includes:

According to the reference time point, a time domain resource corresponding to a time unit closest to the reference time point is selected as a reference resource.

Optionally, the signal receiver 1301 is further configured to receive, by the base station, resource information, used to report channel state information, where the resource information includes a time domain resource;

The determining, by the processor 1302, the reference resource according to the reference time point, specifically includes:

Determining a reference resource according to a time domain resource included in the resource information and a time domain resource corresponding to the reference time point, where a time point corresponding to the time domain resource included in the reference resource lags behind the reference time point .

Optionally, the processor 1302 determines the reference resource according to the time domain resource included in the resource information and the time domain resource corresponding to the reference time point, including:

A time domain resource that satisfies the set condition is selected as a reference resource from among the time domain resources corresponding to the reference time point to all the time domain resources included between the time domain resources included in the resource information.

Optionally, the setting condition includes at least one of the following conditions:

Condition 1: The distance between the time domain resource included in the resource information meets the set second threshold, and is located after the time domain resource corresponding to the reference time point, and is located in the time domain included in the resource information. Before the resource;

Condition 2: a distance between the time domain resource included in the resource information is greater than a distance between the time domain resources corresponding to the reference time point;

Condition three: if the determined number of reference time points is at least two, and the resource information The time domain resource corresponding to the reference time point in which the distance between the time domain resources included in the time domain resource is less than the set threshold value is used as a reference resource.

Optionally, the determining, by the processor 1302, the channel state information of the channel corresponding to the first unlicensed spectrum resource according to the reference resource, including:

When the time difference between the time corresponding to the time domain resource included in the reference resource and the time corresponding to the time domain resource included in the resource information is less than a third threshold, the reference resource is measured. And determining channel state information of the channel corresponding to the first unlicensed spectrum resource.

Optionally, the determining, by the processor 1302, the channel state information of the channel corresponding to the first unlicensed spectrum resource by performing measurement on the reference resource, including:

Determining, according to the reference resource, a time domain resource and a frequency domain resource included in the reference resource;

And measuring the determined time domain resource and/or the frequency domain resource, and determining channel state information of the unlicensed spectrum resource corresponding channel according to the measurement result.

Optionally, the processor 1302 measures the determined time domain resource and/or the frequency domain resource, including:

Performing channel measurement and/or interference measurement on the determined time domain resources respectively;

and / or,

Channel measurement and/or interference measurement are performed separately for the determined frequency domain resources.

Optionally, the determining, by the processor 1302, the channel state information of the channel corresponding to the first unlicensed spectrum resource according to the reference resource, including:

The unlicensed spectrum resource to be configured when the time difference between the time corresponding to the time domain resource included in the reference resource and the time corresponding to the time domain resource included in the resource information is not less than a third threshold Channel state information of the corresponding channel is used as channel state information of the channel corresponding to the first unlicensed spectrum resource.

Optionally, the channel state information of the unlicensed spectrum resource corresponding to the channel configured by the processor 1302 includes:

Receiving specific signaling sent by the base station, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.

Optionally, the specific signaling includes at least one of the following signaling forms:

Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.

The processor 1302 may be a general purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present invention. .

FIG. 14 is a schematic structural diagram of a device for determining channel state information according to an embodiment of the present invention. The determining device may include a signal transmitter 1401 and a signal receiver 1402, wherein the signal transmitter 1401 and the signal receiver 1402 communicate via a communication bus.

The signal transmitter 1401 is configured to send indication information to the user equipment UE, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource;

The signal receiver 1402 is configured to receive channel state information that is sent by the UE, where the channel state information includes channel state information of the first unlicensed spectrum resource corresponding channel, where the channel state information is the UE Determining a reference time point according to the received indication information, and determining a reference resource according to the reference time point, and determining according to the reference resource.

Specifically, the signal transmitter 1401 is configured to send the indication information to the UE by using the first unlicensed spectrum resource, where the indication information includes a moment when the base station sends the indication information.

Specifically, the signal transmitter 1401 is specifically configured to send cross-carrier signaling to the UE by using licensed spectrum resources and/or preempted second unlicensed spectrum resources, where the cross-carrier signaling includes The indication information sent by the base station, where the indication information includes a time unit indicated by the base station.

Specifically, the signal transmitter 1401 is configured to send, by using the first unlicensed spectrum resource, control information to the UE, where the control information includes indication information sent by the base station, where the indication information is The time unit indicated by the base station is included.

Optionally, the time unit indicated by the base station includes at least one of the following information:

a time at which the base station performs data transmission by using the first unlicensed spectrum resource;

The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.

Optionally, the indication information includes at least one of the following information:

Preamble signal

Downlink control information DCI carried by the physical downlink control channel PDCCH;

The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.

Optionally, the signal transmitter 1401 is further configured to send resource information for reporting channel state information to the UE, where the resource information includes a time domain resource, before sending the indication information to the UE.

Optionally, the signal transmitter 1401 is further configured to send specific signaling to the UE, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.

Optionally, the specific signaling includes at least one of the following signaling forms:

Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.

The determining device provided in this embodiment can solve the problem of determining the channel state information accuracy of the channel corresponding to the unlicensed spectrum resource in the scenario of the use of the license-free spectrum resource in the prior art.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

These computer program instructions can also be stored in a bootable computer or other programmable data processing device. In a computer readable memory that operates in a particular manner, causing instructions stored in the computer readable memory to produce an article of manufacture comprising an instruction device implemented in one or more flows and/or block diagrams of the flowchart The function specified in the box or in multiple boxes.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the invention has been described, it will be understood that Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims (87)

  1. A method for determining channel state information, comprising:
    The user equipment UE obtains the indication information, where the indication information is used to indicate that the base station has preempted the first license-free spectrum resource;
    Determining, by the UE, the reference time point according to the obtained indication information;
    Determining, by the UE, the reference resource according to the reference time point, where the reference resource is used to determine a channel state of the channel corresponding to the first unlicensed spectrum resource that the base station has preempted;
    Determining channel state information of the channel corresponding to the first unlicensed spectrum resource according to the reference resource, and sending the determined channel state information to the base station.
  2. The determining method according to claim 1, wherein the acquiring the indication information by the UE comprises:
    The UE receives the indication information that is sent by the base station by using the first unlicensed spectrum resource, where the indication information includes a moment when the base station sends the indication information;
    The determining, according to the obtained indication information, the reference time point, includes:
    And determining, by the UE, the reference time point according to the time that the obtained indication information includes the time when the base station sends the indication information.
  3. The determining method according to claim 2, wherein the determining, by the UE, the reference time point according to the time when the received indication information includes the time when the base station sends the indication information, includes:
    The UE determines the time at which the base station sends the indication information as a reference time point.
  4. The determining method according to claim 2, wherein the determining, by the UE, the reference time point according to the time when the received indication information includes the time when the base station sends the indication information, includes:
    And determining, by the UE, a reference time point according to a correspondence between a preset reference time point and a time when the base station sends the indication information, and a time when the base station sends the indication information.
  5. The determining method according to claim 1, wherein the acquiring the indication information by the UE comprises:
    Receiving, by the UE, the cross-carrier signaling that is sent by the base station by using the licensed spectrum resource and/or the second unlicensed spectrum resource that is preempted, where the cross-carrier signaling includes indication information sent by the base station;
    The UE obtains the indication information sent by the base station from the received cross-carrier signaling, where the indication information includes a time unit indicated by the base station;
    The determining, according to the obtained indication information, the reference time point, includes:
    The UE determines a reference time point according to the time unit indicated by the base station included in the obtained indication information.
  6. The determining method according to claim 1, wherein the acquiring the indication information by the UE comprises:
    Receiving, by the UE, control information that is sent by the base station by using the first unlicensed spectrum resource, where the control information includes indication information sent by the base station;
    Obtaining, by the UE, the indication information sent by the base station, where the indication information includes a time unit indicated by the base station;
    The determining, according to the obtained indication information, the reference time point, includes:
    The UE determines a reference time point according to the time unit indicated by the base station included in the obtained indication information.
  7. The determining method according to claim 5 or 6, wherein the time unit indicated by the base station comprises at least one of the following information:
    a time at which the base station performs data transmission by using the first unlicensed spectrum resource;
    The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.
  8. The determining method according to any one of claims 1 to 7, wherein the indication information comprises at least one of the following information:
    Preamble signal
    Downlink control information DCI carried by the physical downlink control channel PDCCH;
    The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.
  9. The determining method according to any one of claims 1 to 8, wherein the determining, by the UE, the reference resource according to the reference time point comprises:
    The UE uses, as the reference resource, a time domain resource corresponding to the time unit of the reference time point according to the reference time point.
  10. The determining method according to any one of claims 1 to 8, wherein the determining, by the UE, the reference resource according to the reference time point comprises:
    The UE selects, according to the reference time point, a time domain resource corresponding to a time unit of the reference time point that is smaller than a time unit that sets the first threshold as a reference resource.
  11. The determining method according to claim 10, wherein the UE selects, according to the reference time point, a time domain resource corresponding to a time unit of the reference time point that is smaller than a time unit for setting the first threshold. Reference resources, including:
    The UE selects, according to the reference time point, a time domain resource corresponding to a time unit closest to the reference time point as a reference resource.
  12. The determining method according to any one of claims 1 to 8, wherein the method further comprises:
    Receiving, by the UE, resource information, used by the base station, to report channel state information, where the resource information includes a time domain resource;
    Determining, by the UE, the reference resource according to the reference time point, specifically:
    Determining, by the UE, the reference resource according to the time domain resource included in the resource information and the time domain resource corresponding to the reference time point, where a time point corresponding to the time domain resource included in the reference resource lags behind the Reference time point.
  13. The determining method according to claim 12, wherein the determining, by the UE, the reference resource according to the time domain resource included in the resource information and the time domain resource corresponding to the reference time point, including:
    Selecting a time domain resource that meets the set condition from the time domain resource corresponding to the reference time point to all the time domain resources included in the time domain resource included in the resource information Resources.
  14. The determining method according to claim 13, wherein the setting condition includes at least one of the following conditions:
    Condition 1: The distance between the time domain resource included in the resource information meets the set second threshold, and is located after the time domain resource corresponding to the reference time point, and is located in the time domain included in the resource information. Before the resource;
    Condition 2: a distance between the time domain resource included in the resource information is greater than a distance between the time domain resources corresponding to the reference time point;
    Condition 3: if the determined number of reference time points is at least two, the time domain resource corresponding to the reference time point whose distance between the time domain resources included in the resource information is less than a set threshold value As a reference resource.
  15. The determining method according to any one of claims 12 to 14, wherein the determining, by the UE, the channel state information of the channel corresponding to the first unlicensed spectrum resource according to the reference resource, includes:
    When the time difference between the time corresponding to the time domain resource included in the reference resource and the time corresponding to the time domain resource included in the resource information is less than a third threshold, the UE passes the reference The resource performs measurement to determine channel state information of the channel corresponding to the first unlicensed spectrum resource.
  16. The determining method according to claim 15, wherein the determining, by the UE, the channel state information of the channel corresponding to the first unlicensed spectrum resource, by performing measurement on the reference resource, includes:
    Determining, by the UE, a time domain resource and a frequency domain resource included in the reference resource according to the reference resource;
    The UE measures the determined time domain resource and/or the frequency domain resource, and determines channel state information of the unlicensed spectrum resource corresponding channel according to the measurement result.
  17. The determining method according to claim 16, wherein the measuring, by the UE, the determined time domain resource and/or the frequency domain resource comprises:
    Performing channel measurement and/or interference measurement on the determined time domain resources by the UE;
    and / or,
    The UE performs channel measurement and/or interference measurement on the determined frequency domain resources, respectively.
  18. The determining method according to any one of claims 12 to 14, wherein the determining, by the UE, the channel state information of the channel corresponding to the first unlicensed spectrum resource according to the reference resource, includes:
    When the time difference between the time corresponding to the time domain resource included in the reference resource and the time corresponding to the time domain resource included in the resource information is not less than a third threshold, the configured The channel state information of the licensed spectrum resource corresponding channel is used as the channel state information of the channel corresponding to the first unlicensed spectrum resource.
  19. The determining method according to claim 18, wherein the channel state information of the channel corresponding to the unlicensed spectrum resource configured by the UE comprises:
    The UE receives the specific signaling sent by the base station, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.
  20. The determining method according to claim 19, wherein the specific signaling comprises at least one of the following signaling forms:
    Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.
  21. A method for determining channel state information, comprising:
    The base station sends the indication information to the user equipment UE, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource;
    Receiving, by the base station, channel state information that is sent by the UE, where the channel state information includes channel state information of the first unlicensed spectrum resource corresponding channel, where the channel state information is received by the UE according to the received The indication information determines a reference time point, and determines a reference resource according to the reference time point, determined according to the reference resource.
  22. The determining method according to claim 21, wherein the sending, by the base station, the indication information to the UE comprises:
    Sending, by the base station, indication information to the UE by using the first unlicensed spectrum resource, where The indication information includes a time when the base station sends the indication information.
  23. The determining method according to claim 21, wherein the sending, by the base station, the indication information to the UE comprises:
    Transmitting, by the base station, the cross-carrier signaling to the UE by using the licensed spectrum resource and/or the pre-empted second unlicensed spectrum resource, where the cross-carrier signaling includes indication information sent by the base station, The indication information includes a time unit indicated by the base station.
  24. The determining method according to claim 21, wherein the sending, by the base station, the indication information to the UE comprises:
    The base station sends control information to the UE by using the first unlicensed spectrum resource, where the control information includes indication information sent by the base station, where the indication information includes a time unit indicated by the base station.
  25. The determining method according to claim 23 or 24, wherein the time unit indicated by the base station comprises at least one of the following information:
    a time at which the base station performs data transmission by using the first unlicensed spectrum resource;
    The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.
  26. The determining method according to any one of claims 21 to 25, wherein the indication information comprises at least one of the following information:
    Preamble signal
    Downlink control information DCI carried by the physical downlink control channel PDCCH;
    The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.
  27. The determining method according to any one of claims 21 to 26, wherein before the base station sends the indication information to the UE, the method further includes:
    The base station sends resource information for reporting channel state information to the UE, where the resource information includes a time domain resource.
  28. The determining method according to any one of claims 21 to 26, wherein the method further comprises:
    The base station sends specific signaling to the UE, where the specific signaling includes a configuration exemption The licensed spectrum resource corresponds to the channel state information of the channel.
  29. The determining method according to claim 28, wherein the specific signaling comprises at least one of the following signaling forms:
    Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.
  30. A device for determining channel state information, comprising:
    An obtaining unit, configured to obtain indication information, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource;
    a determining unit, configured to determine a reference time point according to the indication information acquired by the acquiring unit, and determine a reference resource according to the reference time point, where the reference resource is used to determine that the base station has preempted The first unlicensed spectrum resource corresponds to a channel state of the channel;
    And a sending unit, configured to determine, according to the reference resource, channel state information of the channel corresponding to the first unlicensed spectrum resource, and send the determined channel state information to the base station.
  31. The determining device according to claim 30, wherein
    The acquiring unit is specifically configured to receive indication information that is sent by the base station by using the first unlicensed spectrum resource, where the indication information includes a time when the base station sends the indication information;
    The determining unit is configured to determine a reference time point according to the time that the indication information acquired by the acquiring unit includes the base station sending the indication information.
  32. The determining device according to claim 31, wherein the determining unit determines the reference time point according to the time when the indication information acquired by the acquiring unit includes the base station transmitting the indication information, and includes:
    The time at which the base station transmits the indication information is determined as a reference time point.
  33. The determining device according to claim 31, wherein the determining unit determines the reference time point according to the time when the indication information acquired by the acquiring unit includes the base station transmitting the indication information, and includes:
    And determining a reference time point according to a correspondence between a preset reference time point and a time when the base station sends the indication information, and a time when the acquired base station sends the indication information.
  34. The determining device according to claim 30, wherein
    The acquiring unit is specifically configured to receive cross-carrier signaling that is sent by the base station by using the licensed spectrum resource and/or the second unlicensed spectrum resource that is preempted, where the cross-carrier signaling includes an indication sent by the base station information;
    Determining, by the received cross-carrier signaling, the indication information sent by the base station, where the indication information includes a time unit indicated by the base station;
    The determining unit is specifically configured to determine a reference time point according to a time unit indicated by the base station included in the indication information acquired by the acquiring unit.
  35. The determining device according to claim 30, wherein
    The acquiring unit is specifically configured to receive control information that is sent by the base station by using the first unlicensed spectrum resource, where the control information includes indication information sent by the base station;
    Acquiring, by the received control information, the indication information sent by the base station, where the indication information includes a time unit indicated by the base station;
    The determining unit is specifically configured to determine a reference time point according to a time unit indicated by the base station included in the indication information acquired by the acquiring unit.
  36. The determining device according to claim 34 or 35, wherein the time unit indicated by the base station comprises at least one of the following information:
    a time at which the base station performs data transmission by using the first unlicensed spectrum resource;
    The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.
  37. The determining device according to any one of claims 30 to 36, wherein the indication information comprises at least one of the following information:
    Preamble signal
    Downlink control information DCI carried by the physical downlink control channel PDCCH;
    The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.
  38. The determining device according to any one of claims 30 to 37, characterized in that
    The determining unit is specifically configured to use, as the reference resource, a time domain resource corresponding to the time unit that includes the reference time point according to the reference time point.
  39. The determining device according to any one of claims 30 to 37, characterized in that
    The determining unit is specifically configured to select, according to the reference time point, a time domain resource corresponding to a time unit that is smaller than a time threshold for setting the first threshold as a reference resource.
  40. The determining device according to claim 39, wherein the determining unit selects a time domain resource corresponding to a time unit of the reference time point that is smaller than a time unit that sets the first threshold according to the reference time point. As a reference resource, including:
    According to the reference time point, a time domain resource corresponding to a time unit closest to the reference time point is selected as a reference resource.
  41. The determining device according to any one of claims 30 to 37, characterized in that
    The acquiring unit is further configured to receive, by the base station, resource information, used to report channel state information, where the resource information includes a time domain resource;
    The determining unit is configured to determine a reference resource according to the time domain resource included in the resource information received by the acquiring unit and the time domain resource corresponding to the reference time point, where the reference resource includes The time point corresponding to the time domain resource lags behind the reference time point.
  42. The determining device according to claim 41, wherein the determining unit determines the reference according to the time domain resource included in the resource information received by the acquiring unit and the time domain resource corresponding to the reference time point. Resources, including:
    A time domain resource that satisfies the set condition is selected as a reference resource from among the time domain resources corresponding to the reference time point to all the time domain resources included between the time domain resources included in the resource information.
  43. The determining device according to claim 42, wherein the setting condition includes at least one of the following conditions:
    Condition 1: The distance between the time domain resource included in the resource information meets the set second threshold, and is located after the time domain resource corresponding to the reference time point, and is located in the time domain included in the resource information. Before the resource;
    Condition 2: a distance between the time domain resource included in the resource information is greater than a distance between the time domain resources corresponding to the reference time point;
    Condition 3: if the determined number of reference time points is at least two, the time domain corresponding to the reference time point whose distance between the time domain resources included in the resource information is less than a set threshold value The source is used as a reference resource.
  44. The determining device according to any one of claims 41 to 43, wherein
    The sending unit is configured to: when a time difference between a time corresponding to the time domain resource included in the reference resource and a time corresponding to the time domain resource included in the resource information is less than a third threshold, And determining channel state information of the channel corresponding to the first unlicensed spectrum resource by performing measurement on the reference resource.
  45. The determining device according to claim 44, wherein the transmitting unit determines channel state information of the channel corresponding to the first unlicensed spectrum resource by performing measurement on the reference resource, including:
    Determining, according to the reference resource, a time domain resource and a frequency domain resource included in the reference resource;
    And measuring the determined time domain resource and/or the frequency domain resource, and determining channel state information of the unlicensed spectrum resource corresponding channel according to the measurement result.
  46. The determining device according to claim 45, wherein the transmitting unit performs measurement on the determined time domain resource and/or the frequency domain resource, including:
    Performing channel measurement and/or interference measurement on the determined time domain resources respectively;
    and / or,
    Channel measurement and/or interference measurement are performed separately for the determined frequency domain resources.
  47. The determining device according to any one of claims 41 to 43, wherein
    The sending unit is configured to: when a time difference between a time corresponding to the time domain resource included in the reference resource and a time corresponding to the time domain resource included in the resource information is not less than a third threshold And using the channel state information of the configured unlicensed spectrum resource corresponding channel as the channel state information of the first unlicensed spectrum resource corresponding channel.
  48. The determining device according to claim 47, wherein
    The acquiring unit is further configured to receive the specific signaling sent by the base station, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.
  49. The determining method according to claim 48, wherein the specific signaling comprises at least one of the following signaling forms:
    Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.
  50. A device for determining channel state information, comprising:
    a sending unit, configured to send the indication information to the user equipment UE, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource;
    a receiving unit, configured to receive channel state information sent by the UE, where the channel state information includes channel state information of the first unlicensed spectrum resource corresponding channel, where the channel state information is received by the UE according to The arrival indication information determines a reference time point, and determines a reference resource according to the reference time point, determined according to the reference resource.
  51. The determining device according to claim 50, wherein
    The sending unit is configured to send the indication information to the UE by using the first unlicensed spectrum resource, where the indication information includes a moment when the base station sends the indication information.
  52. The determining device according to claim 50, wherein
    The sending unit is configured to send cross-carrier signaling to the UE by using a licensed spectrum resource and/or a pre-empted second unlicensed spectrum resource, where the cross-carrier signaling includes the sending by the base station And indication information, where the indication information includes a time unit indicated by the base station.
  53. The determining device according to claim 50, wherein
    The sending unit is configured to send the control information to the UE by using the first unlicensed spectrum resource, where the control information includes indication information sent by the base station, where the indication information includes the base station The indicated time unit.
  54. The determining device according to claim 52 or 53, wherein the time unit indicated by the base station comprises at least one of the following information:
    a time at which the base station performs data transmission by using the first unlicensed spectrum resource;
    The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.
  55. The determining device according to any one of claims 50 to 54, wherein the indication information comprises at least one of the following information:
    Preamble signal
    Downlink control information DCI carried by the physical downlink control channel PDCCH;
    The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.
  56. The determining device according to any one of claims 50 to 55, characterized in that
    The sending unit is further configured to send resource information for reporting channel state information to the UE, where the resource information includes a time domain resource, before sending the indication information to the UE.
  57. The determining device according to any one of claims 50 to 55, characterized in that
    The sending unit is further configured to send specific signaling to the UE, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.
  58. The determining method according to claim 57, wherein the specific signaling comprises at least one of the following signaling forms:
    Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.
  59. A device for determining channel state information, comprising:
    a signal receiver, configured to obtain indication information, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource;
    a processor, configured to determine a reference time point according to the obtained indication information, and determine a reference resource according to the reference time point, where the reference resource is used to determine that the base station has preempted the first a channel state of the channel corresponding to the unlicensed spectrum resource; determining channel state information of the channel corresponding to the first unlicensed spectrum resource according to the reference resource;
    And a signal transmitter, configured to send the determined channel state information to the base station.
  60. The determining device according to claim 59, wherein
    The signal receiver is configured to receive the indication information that is sent by the base station by using the first unlicensed spectrum resource, where the indication information includes a time when the base station sends the indication information;
    The processor is specifically configured to determine a reference time point according to the time when the obtained indication information includes the time when the base station sends the indication information.
  61. The determining device according to claim 60, wherein the processor determines the reference time point according to the time when the obtained indication information includes the time when the base station sends the indication information, and the method includes:
    The time at which the base station transmits the indication information is determined as a reference time point.
  62. The determining device according to claim 60, wherein the processor determines the reference time point according to the time when the obtained indication information includes the time when the base station sends the indication information, and the method includes:
    And determining a reference time point according to a correspondence between a preset reference time point and a time when the base station sends the indication information, and a time when the acquired base station sends the indication information.
  63. The determining device according to claim 59, wherein
    The signal receiver is specifically configured to receive cross-carrier signaling sent by the base station by using a licensed spectrum resource and/or a second unlicensed spectrum resource that is preempted, where the cross-carrier signaling includes the base station Instructions sent;
    Determining, by the received cross-carrier signaling, the indication information sent by the base station, where the indication information includes a time unit indicated by the base station;
    Determining, by the processor, the reference time point according to the obtained indication information, including:
    Determining a reference time point according to the time unit indicated by the base station included in the obtained indication information.
  64. The determining device according to claim 59, wherein
    The signal receiver is configured to receive control information that is sent by the base station by using the first unlicensed spectrum resource, where the control information includes indication information sent by the base station;
    Acquiring, by the received control information, the indication information sent by the base station, where the indication information includes a time unit indicated by the base station;
    Determining, by the processor, the reference time point according to the obtained indication information, including:
    Determining a reference time point according to the time unit indicated by the base station included in the obtained indication information.
  65. The determining device according to claim 63 or claim 64, wherein the time unit indicated by the base station comprises at least one of the following information:
    a time at which the base station performs data transmission by using the first unlicensed spectrum resource;
    The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.
  66. The determining device according to any one of claims 59 to 65, wherein the indication information comprises at least one of the following information:
    Preamble signal
    Downlink control information DCI carried by the physical downlink control channel PDCCH;
    The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.
  67. The determining device according to any one of claims 59 to 66, wherein the determining, by the processor, the reference resource according to the reference time point comprises:
    According to the reference time point, a time domain resource corresponding to the time unit including the reference time point is used as a reference resource.
  68. The determining device according to any one of claims 59 to 67, wherein the determining, by the processor, the reference resource according to the reference time point comprises:
    Determining, according to the reference time point, a time domain resource corresponding to a time unit of the reference time point that is smaller than a time unit for setting the first threshold as a reference resource.
  69. The determining device according to claim 68, wherein the processor selects, according to the reference time point, a time domain resource corresponding to a time unit between the reference time point and a time unit that is less than a first threshold. As a reference resource, including:
    According to the reference time point, a time domain resource corresponding to a time unit closest to the reference time point is selected as a reference resource.
  70. The determining device according to any one of claims 59 to 66, wherein
    The signal receiver is further configured to receive, by the base station, resource information for reporting channel state information, where the resource information includes a time domain resource;
    Determining, by the processor, the reference resource according to the reference time point, specifically:
    Determining a reference resource according to a time domain resource included in the resource information and a time domain resource corresponding to the reference time point, where a time point corresponding to the time domain resource included in the reference resource lags behind the reference time point .
  71. The determining device according to claim 70, wherein the processor determines the reference resource according to the time domain resource included in the resource information and the time domain resource corresponding to the reference time point. Source, including:
    A time domain resource that satisfies the set condition is selected as a reference resource from among the time domain resources corresponding to the reference time point to all the time domain resources included between the time domain resources included in the resource information.
  72. The determining apparatus according to claim 71, wherein said setting condition includes at least one of the following conditions:
    Condition 1: The distance between the time domain resource included in the resource information meets the set second threshold, and is located after the time domain resource corresponding to the reference time point, and is located in the time domain included in the resource information. Before the resource;
    Condition 2: a distance between the time domain resource included in the resource information is greater than a distance between the time domain resources corresponding to the reference time point;
    Condition 3: if the determined number of reference time points is at least two, the time domain resource corresponding to the reference time point whose distance between the time domain resources included in the resource information is less than a set threshold value As a reference resource.
  73. The determining device according to any one of claims 70 to 72, wherein the determining, by the processor, channel state information of the channel corresponding to the first unlicensed spectrum resource according to the reference resource, includes:
    When the time difference between the time corresponding to the time domain resource included in the reference resource and the time corresponding to the time domain resource included in the resource information is less than a third threshold, the reference resource is measured. And determining channel state information of the channel corresponding to the first unlicensed spectrum resource.
  74. The determining device according to claim 73, wherein the determining, by the processor, the channel state information of the channel corresponding to the first unlicensed spectrum resource, comprises:
    Determining, according to the reference resource, a time domain resource and a frequency domain resource included in the reference resource;
    And measuring the determined time domain resource and/or the frequency domain resource, and determining channel state information of the unlicensed spectrum resource corresponding channel according to the measurement result.
  75. The determining device according to claim 74, wherein the determining, by the processor, the determined time domain resource and/or the frequency domain resource comprises:
    Performing channel measurement and/or interference measurement on the determined time domain resources respectively;
    and / or,
    Channel measurement and/or interference measurement are performed separately for the determined frequency domain resources.
  76. The determining device according to any one of claims 70 to 72, wherein the determining, by the processor, channel state information of the channel corresponding to the first unlicensed spectrum resource according to the reference resource, includes:
    The unlicensed spectrum resource to be configured when the time difference between the time corresponding to the time domain resource included in the reference resource and the time corresponding to the time domain resource included in the resource information is not less than a third threshold Channel state information of the corresponding channel is used as channel state information of the channel corresponding to the first unlicensed spectrum resource.
  77. The determining device according to claim 76, wherein the channel state information of the unlicensed spectrum resource corresponding to the channel configured by the processor comprises:
    Receiving specific signaling sent by the base station, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.
  78. The determining device according to claim 77, wherein the specific signaling comprises at least one of the following signaling forms:
    Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.
  79. A device for determining channel state information, comprising:
    a signal transmitter, configured to send indication information to the user equipment UE, where the indication information is used to indicate that the base station has preempted the first unlicensed spectrum resource;
    a signal receiver, configured to receive channel state information sent by the UE, where the channel state information includes channel state information of the first unlicensed spectrum resource corresponding channel, where the channel state information is Receiving the indication information to determine a reference time point, and determining a reference resource according to the reference time point, determined according to the reference resource.
  80. The determining device according to claim 79, wherein
    The signal transmitter is configured to send the indication information to the UE by using the first unlicensed spectrum resource, where the indication information includes a moment when the base station sends the indication information.
  81. The determining device according to claim 79, wherein
    The signal transmitter is configured to send cross-carrier signaling to the UE by using a licensed spectrum resource and/or a pre-empted second unlicensed spectrum resource, where the cross-carrier signaling includes the base station sending The indication information includes a time unit indicated by the base station.
  82. The determining device according to claim 79, wherein
    The signal transmitter is configured to send control information to the UE by using the first unlicensed spectrum resource, where the control information includes indication information sent by the base station, where the indication information includes the The time unit indicated by the base station.
  83. The determining device according to claim 81 or 82, wherein the time unit indicated by the base station comprises at least one of the following information:
    a time at which the base station performs data transmission by using the first unlicensed spectrum resource;
    The time when the base station performs data scheduling by the UE by using the first unlicensed spectrum resource.
  84. The determining device according to one of claims 79 to 83, wherein the indication information comprises at least one of the following information:
    Preamble signal
    Downlink control information DCI carried by the physical downlink control channel PDCCH;
    The downlink control information DCI carried by the physical downlink control channel EPDCCH is enhanced.
  85. The determining device according to any one of claims 79 to 84, characterized in that
    The signal transmitter is further configured to send resource information for reporting channel state information to the UE, where the resource information includes a time domain resource, before sending the indication information to the UE.
  86. The determining device according to any one of claims 79 to 85, characterized in that
    The signal transmitter is further configured to send specific signaling to the UE, where the specific signaling includes channel state information of the configured unlicensed spectrum resource corresponding channel.
  87. The determining device according to claim 86, wherein the specific signaling comprises at least one of the following signaling forms:
    Physical layer signaling, medium access control MAC signaling, and radio resource control RRC signaling.
PCT/CN2015/076339 2015-04-10 2015-04-10 Method and device for determining channel state information WO2016161639A1 (en)

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