CN106664569B

CN106664569B - Method and device for determining channel state information

Info

Publication number: CN106664569B
Application number: CN201580044249.5A
Authority: CN
Inventors: 郑娟; 闫志宇; 李强
Original assignee: Beijing Huawang Online Commerce Co Ltd
Current assignee: Chongqing Ziteng Culture Technology Co ltd
Priority date: 2015-04-10
Filing date: 2015-04-10
Publication date: 2020-05-29
Anticipated expiration: 2035-04-10
Also published as: WO2016161639A1; CN106664569A

Abstract

The invention discloses a method and a device for determining channel state information, wherein the method comprises the following steps: the UE acquires indication information; determining a reference time point according to the acquired indication information; determining a reference resource according to the reference time point; and determining channel state information of a channel corresponding to the first unlicensed spectrum resource according to the reference resource, and sending the determined channel state information to the base station. Therefore, under the condition that the unlicensed spectrum resource is used at an opportunity, the UE determines a reference time point in real time according to the indication information sent by the base station and determines a reference resource for measuring the channel state of the channel corresponding to the unlicensed spectrum resource preempted by the base station, so that the determined reference resource can be flexibly adjusted according to the unlicensed spectrum resource preempted by the base station, the accuracy of channel state information measurement is improved, and the data transmission efficiency of using the unlicensed spectrum resource is effectively ensured.

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 a device for determining channel state information.

Background

Frequency spectrum is the basis for wireless communications. According to the latest released international spectrum white paper by the Federal Communications Commission (FCC), the unlicensed or unlicensed (english) spectrum resources are larger than the licensed or licensed (english) spectrum resources.

At present, the main technology used on the unlicensed spectrum is Wireless Fidelity (WiFi), but the WiFi technology has defects in mobility, security, Quality of Service (QoS) and handling multi-user scheduling at the same time, so that Long-term evolution (LTE) devices are applied to the unlicensed spectrum, which not only can effectively utilize unlicensed spectrum resources, but also can provide more effective Wireless access to meet the increasing demand of mobile bandwidth services.

Since the unlicensed spectrum may be occupied by a plurality of wireless communication systems and/or by a plurality of operators, in order to ensure fairness in using the unlicensed spectrum resources, any device needs to know the usage of the unlicensed spectrum resources in advance before using the unlicensed spectrum resources. For example: listen Before Talk (LBT) rule, that is, Before using the unlicensed spectrum resource, a Clear Channel Assessment (CCA) is needed to determine whether the unlicensed spectrum resource is idle or available; after determining that the unlicensed spectrum resources are idle or available, preempting the unlicensed spectrum resources and transmitting data on the preempting unlicensed spectrum resources; when the time for occupying the unlicensed spectrum resource reaches a set threshold, the unlicensed spectrum resource needs to be released. It is determined again whether the unlicensed spectrum resources are free or available before the next time use of the unlicensed spectrum resources is required.

In order to have more opportunities to preempt the unlicensed spectrum resources, the LTE device may listen to the unlicensed spectrum resources at any time. However, in this way, how to ensure the transmission efficiency of data on the unlicensed spectrum resource by the LTE device becomes a key issue in opportunistic use of the unlicensed spectrum resource and in a limited time when the seized unlicensed spectrum resource is used.

For LTE devices, one of the keys to improve data transmission efficiency is to obtain Channel State Information (CSI) matching the Channel State of the seized unlicensed spectrum resource.

Therefore, on the premise of opportunistic use of the unlicensed spectrum resources, how to accurately determine the CSI so as to ensure the data transmission efficiency becomes an important problem to be solved urgently.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for determining channel state information, which are used for solving the problem of how to accurately determine CSI and further ensure data transmission efficiency on the premise of opportunistic use of license-free frequency spectrum resources.

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

user Equipment (UE) acquires indication information, wherein the indication information is used for indicating that a base station has preempted a first license-free spectrum resource;

the UE determines a reference time point according to the acquired indication information;

the UE determines a reference resource according to the reference time point, wherein the reference resource is used for determining a channel state of a channel corresponding to the first license-free spectrum resource which is preempted by the base station;

and the UE determines the channel state information of a channel corresponding to the first unlicensed spectrum resource according to the reference resource and sends the determined channel state information to the base station.

With reference to the possible implementation manners of the first aspect, in a first possible implementation manner of the first aspect, the obtaining, by the UE, the indication information includes:

the UE receives indication information sent by the base station through the first unlicensed spectrum resource, wherein the indication information comprises the time when the base station sends the indication information;

the UE determines a reference time point according to the acquired indication information, and the method comprises the following steps:

and the UE determines a reference time point according to the acquired time when the indication information comprises the indication information sent by the base station.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the determining, by the UE, a reference time point according to the time when the obtained indication information includes the indication information sent by the base station includes:

and the UE determines the moment when the base station sends the indication information as a reference time point.

With reference to the first possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the determining, by the UE, a reference time point according to the time when the obtained indication information includes the indication information sent by the base station includes:

and the UE determines a reference time point according to the corresponding relation between a 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.

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

the UE receives cross-carrier signaling sent by the base station through licensed spectrum resources and/or preempted second license-free spectrum resources, wherein the cross-carrier signaling contains indication information sent by the base station;

the UE acquires indication information sent by the base station from the received cross-carrier signaling, wherein the indication information comprises a time unit indicated by the base station;

and the UE determines a reference time point according to the time unit indicated by the base station contained in the acquired indication information.

With reference to the possible implementation manners of the first aspect, in a fifth possible implementation manner of the first aspect, the obtaining, by the UE, the indication information includes:

the UE receives control information sent by the base station through the first unlicensed spectrum resource, wherein the control information comprises indication information sent by the base station;

the UE acquires indication information sent by the base station from the received control information, wherein the indication information comprises a time unit indicated by the base station;

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

the base station utilizes the first license-free frequency spectrum resource to transmit data;

and the base station carries out data scheduling on the UE by utilizing the first license-free frequency spectrum resource.

With reference to the possible implementation manners of the first aspect of the present invention, or with reference to the first possible implementation manner of the first aspect of the present invention, or with reference to the second possible implementation manner of the first aspect of the present invention, or with reference to the third possible implementation manner of the first aspect of the present invention, or with reference to the fourth possible implementation manner of the first aspect of the present invention, or with reference to the fifth possible implementation manner of the first aspect of the present invention, or with reference to the sixth possible implementation manner of the first aspect of the present invention, in a seventh possible implementation manner of the first aspect, the indication information includes at least one of the following information:

a preamble signal;

downlink control information DCI carried by a physical downlink control channel PDCCH;

and enhancing downlink control information DCI carried by a physical downlink control channel EPDCCH.

With reference to the possible implementation manners of the first aspect of the present invention, or with reference to the first possible implementation manner of the first aspect of the present invention, or with reference to the second possible implementation manner of the first aspect of the present invention, or with reference to the third possible implementation manner of the first aspect of the present invention, or with reference to the fourth possible implementation manner of the first aspect of the present invention, or with reference to the fifth possible implementation manner of the first aspect of the present invention, or with reference to the sixth possible implementation manner of the first aspect of the present invention, or with reference to the seventh possible implementation manner of the first aspect of the present invention, in an eighth possible implementation manner of the first aspect, the determining, by the UE, a reference resource according to the reference time point includes:

and the UE takes the time domain resource corresponding to the time unit containing the reference time point as the reference resource according to the reference time point.

With reference to the possible implementation manners of the first aspect of the present invention, or with reference to the first possible implementation manner of the first aspect of the present invention, or with reference to the second possible implementation manner of the first aspect of the present invention, or with reference to the third possible implementation manner of the first aspect of the present invention, or with reference to the fourth possible implementation manner of the first aspect of the present invention, or with reference to the fifth possible implementation manner of the first aspect of the present invention, or with reference to the sixth possible implementation manner of the first aspect of the present invention, or with reference to the seventh possible implementation manner of the first aspect of the present invention, in a ninth possible implementation manner of the first aspect, the determining, by the UE, the reference resource according to the reference time point includes:

and the UE selects the time domain resource corresponding to the time unit with the distance between the time domain resource and the reference time point smaller than the set first threshold value as the reference resource according to the reference time point.

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 selecting, by the UE, a time domain resource corresponding to a time unit whose distance between the reference time points is smaller than a set first threshold as the reference resource according to the reference time point includes:

and the UE selects the time domain resource corresponding to the time unit with the closest distance to the reference time point as the reference resource according to the reference time point.

With reference to the possible embodiments of the first aspect of the present invention, or with reference to the first possible implementation manner of the first aspect of the present invention, or with reference to the second possible implementation manner of the first aspect of the present invention, or with reference to the third possible implementation manner of the first aspect of the present invention, or with reference to the fourth possible implementation manner of the first aspect of the present invention, or with reference to the fifth possible implementation manner of the first aspect of the present invention, or with reference to the sixth possible implementation manner of the first aspect of the present invention, or with reference to the seventh possible implementation manner of the first aspect of the present invention, in an eleventh possible implementation manner of the first aspect, the method further includes:

the UE receives resource information which is sent by the base station and used for reporting channel state information, wherein the resource information comprises time domain resources;

the UE determines a reference resource according to the reference time point, which specifically includes:

and the UE determines a reference resource according to the time domain resource contained in the resource information and the time domain resource corresponding to the reference time point, wherein the time point corresponding to the time domain resource contained in the reference resource 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 determining, by the UE, 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 includes:

and the UE selects the time domain resource meeting the set condition as the reference resource from all the time domain resources contained from the time domain resource corresponding to the reference time point to the time domain resource contained in the resource information.

With reference to the twelfth possible implementation manner of the first aspect of the present invention, in a thirteenth possible implementation manner of the first aspect, the set condition includes at least one of the following conditions:

the first condition is as follows: the distance between the time domain resource contained in the resource information and the time domain resource meets a set second threshold, and the distance is positioned behind the time domain resource corresponding to the reference time point and in front of the time domain resource contained in the resource information;

and a second condition: the distance between the time domain resources contained in the resource information is greater than the distance between the time domain resources corresponding to the reference time point;

and (3) carrying out a third condition: and if the determined number of the reference time points is at least two, the time domain resources corresponding to the reference time points, the distance between which and the time domain resources contained in the resource information is smaller than a set threshold value, are used as the reference resources.

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

and when the time difference value between the time corresponding to the time domain resource contained in the reference resource and the time corresponding to the time domain resource contained in the resource information is smaller than a set third threshold value, the UE determines the channel state information of the channel corresponding to the first license-free spectrum resource by measuring the reference resource.

With reference to the fourteenth possible implementation manner of the first aspect, in a fifteenth possible implementation manner of the first aspect, the determining, by the UE, channel state information of a channel corresponding to the first unlicensed spectrum resource by measuring the reference resource includes:

the UE determines time domain resources and frequency domain resources contained in the reference resources according to the reference resources;

and the UE measures the determined time domain resources and/or the frequency domain resources and determines the channel state information of the channel corresponding to the license-free frequency spectrum resources according to the measurement result.

With reference to the fifteenth possible implementation manner of the first aspect, in a sixteenth possible implementation manner of the first aspect, the measuring, by the UE, the determined time domain resources and/or the frequency domain resources includes:

the UE respectively carries out channel measurement and/or interference measurement on the determined time domain resources;

and/or the presence of a gas in the gas,

and the UE respectively carries out channel measurement and/or interference measurement on the determined frequency domain resources.

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

and when the time difference between the time corresponding to the time domain resource contained in the reference resource and the time corresponding to the time domain resource contained in the resource information is not less than a set third threshold, the UE takes the channel state information of the configured channel corresponding to the unlicensed spectrum resource 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 an eighteenth possible implementation manner of the first aspect, the channel state information of the channel corresponding to the unlicensed spectrum resource configured by the UE includes:

and the UE receives a specific signaling sent by the base station, wherein the specific signaling comprises channel state information of a channel corresponding to the configured license-free spectrum resource.

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

physical layer signaling, Media 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:

a base station sends indication information to User Equipment (UE), wherein the indication information is used for indicating that the base station has preempted a first unlicensed spectrum resource;

and the base station receives channel state information sent by the UE, wherein the channel state information comprises channel state information of a channel corresponding to the first unlicensed spectrum resource, and the channel state information is determined by the UE according to the received indication information, and the reference resource is determined according to the reference time point and 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 sending, by the base station, the indication information to the UE includes:

and the base station sends indication information to the UE through the first license-free frequency spectrum resource, wherein the indication information comprises the time 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 sending, by the base station, the indication information to the UE includes:

the base station sends cross-carrier signaling to the UE through licensed spectrum resources and/or second unlicensed spectrum resources which are occupied in a robbed mode, wherein the cross-carrier signaling comprises indication information sent by the base station, and the indication information comprises 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 sending, by the base station, the indication information to the UE includes:

and the base station sends control information to the UE through the first unlicensed spectrum resource, wherein the control information comprises indication information sent by the base station, and the indication information comprises 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 with reference to the third possible implementation manner of the second aspect of the present invention, in a fourth possible implementation manner of the second aspect, the time unit indicated by the base station includes at least one of the following information:

With reference to the possible implementation manners of the second aspect of the present invention, or with reference to the first possible implementation manner of the second aspect of the present invention, or with reference to the second possible implementation manner of the second aspect of the present invention, or with reference to the third possible implementation manner of the second aspect of the present invention, or with reference to the fourth possible implementation manner of the second aspect of the present invention, in a fifth possible implementation manner of the second aspect, the indication information includes at least one of the following information:

a preamble signal;

With reference to the possible implementation manners of the second aspect of the present invention, or with reference to the first possible implementation manner of the second aspect of the present invention, or with reference to the second possible implementation manner of the second aspect of the present invention, or with reference to the third possible implementation manner of the second aspect of the present invention, or with reference to 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 further includes:

and the base station sends resource information for reporting the channel state information to the UE, wherein the resource information comprises time domain resources.

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

and the base station sends a specific signaling to the UE, wherein the specific signaling comprises channel state information of a channel corresponding to the configured license-free spectrum resource.

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

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

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

the determining unit is used for determining a reference time point according to the indicating information acquired by the acquiring unit; determining reference resources according to the reference time point, wherein the reference resources are used for determining a channel state of a channel corresponding to the first license-free spectrum resource which is preempted by the base station;

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

With reference to the third possible implementation manner of the third aspect, in a first possible implementation manner of the third aspect, the obtaining unit is specifically configured to receive indication information sent by a base station through the first unlicensed spectrum resource, where the indication information includes a time when the base station sends the indication information;

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

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

and determining the time when the base station sends the indication information as a reference time point.

With reference to the first possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the determining unit determines a reference time point according to a time when the indication information acquired by the acquiring unit includes the indication information sent by the base station, where the determining unit includes:

and determining the reference time point according to the corresponding relation 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.

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

acquiring indication information sent by the base station from the received cross-carrier signaling, wherein the indication information comprises a time unit indicated by the base station;

the determining unit 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.

With reference to the possible implementation manner of the third aspect of the present invention, in a fifth possible implementation manner of the third aspect, the obtaining unit is specifically configured to receive control information sent by a base station through the first unlicensed spectrum resource, where the control information includes indication information sent by the base station;

acquiring indication information sent by the base station from the received control information, wherein the indication information comprises a time unit indicated by the base station;

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

With reference to the possible implementation manners of the third aspect of the present invention, or with reference to the first possible implementation manner of the third aspect of the present invention, or with reference to the second possible implementation manner of the third aspect of the present invention, or with reference to the third possible implementation manner of the third aspect of the present invention, or with reference to the fourth possible implementation manner of the third aspect of the present invention, or with reference to the fifth possible implementation manner of the third aspect of the present invention, or with reference to the sixth possible implementation manner of the third aspect of the present invention, in a seventh possible implementation manner of the third aspect, the indication information includes at least one of the following information:

a preamble signal;

With reference to the possible implementation manners of the third aspect of the present invention, or with reference to the first possible implementation manner of the third aspect of the present invention, or with reference to the second possible implementation manner of the third aspect of the present invention, or with reference to the third possible implementation manner of the third aspect of the present invention, or with reference to the fourth possible implementation manner of the third aspect of the present invention, or with reference to the fifth possible implementation manner of the third aspect of the present invention, or with reference to the sixth possible implementation manner of the third aspect of the present invention, or with reference to the seventh possible implementation manner of the third aspect of the present invention, in an eighth possible implementation manner of the third aspect, the determining unit is specifically configured to, according to the reference time point, use, as the reference resource, a time domain resource corresponding to a time unit that includes the reference time point.

With reference to the possible embodiments of the third aspect of the present invention, or with reference to the first possible embodiment of the third aspect of the present invention, with reference to either the second possible implementation of the third aspect of the invention, or the third possible implementation of the third aspect of the invention, with reference to either the fourth possible implementation of the third aspect of the invention, or the fifth possible implementation of the third aspect of the invention, with reference to either the sixth possible implementation of the third aspect of the invention, or the seventh possible implementation of the third aspect of the invention, in a ninth possible implementation manner of the third aspect, the determining unit is specifically configured to select, according to the reference time point, a time domain resource corresponding to a time unit in which a distance between the reference time point and the time unit is smaller than a set first threshold as the 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 selecting, by the determining unit, a time domain resource corresponding to a time unit in which a distance between the reference time points is smaller than a set first threshold as the reference resource according to the reference time point includes:

and selecting the time domain resource corresponding to the time unit with the closest distance to the reference time point as the reference resource according to the reference time point.

With reference to the possible implementation manner of the third aspect of the present invention, or with reference to the first possible implementation manner of the third aspect of the present invention, or with reference to the second possible implementation manner of the third aspect of the present invention, or with reference to the third possible implementation manner of the third aspect of the present invention, or with reference to the fourth possible implementation manner of the third aspect of the present invention, or with reference to the fifth possible implementation manner of the third aspect of the present invention, or with reference to the sixth possible implementation manner of the third aspect of the present invention, or with reference to the seventh possible implementation manner of the third aspect of the present invention, in an eleventh possible implementation manner of the third aspect, the obtaining unit is further configured to receive resource information, which is sent by the base station and used for reporting channel state information, where the resource information includes time domain resources;

the determining unit is specifically configured to determine the reference resource according to the time domain resource included in the resource information received by the obtaining unit 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.

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 determines a reference resource according to a time domain resource included in the resource information received by the obtaining unit and a time domain resource corresponding to the reference time point, where the determining unit includes:

and selecting the time domain resource meeting the set condition as the reference resource from all the time domain resources contained from the time domain resource corresponding to the reference time point to the time domain resource contained in the resource information.

With reference to the twelfth possible implementation manner of the third aspect of the present invention, in a thirteenth possible implementation manner of the third aspect, the set condition includes at least one of the following conditions:

With reference to the eleventh possible implementation manner of the third aspect of the present invention, or the twelfth possible implementation manner of the third aspect of the present invention, or the thirteenth possible implementation manner of the third aspect of the present invention, in a fourteenth possible implementation manner of the third aspect of the present invention, the sending unit is specifically configured to, when a time difference between a time corresponding to a time domain resource included in the reference resource and a time corresponding to a time domain resource included in the resource information is smaller than a set third threshold, determine, by measuring the reference resource, channel state information of a channel corresponding to the first unlicensed spectrum 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 determining, by the sending unit, channel state information of a channel corresponding to the first unlicensed spectrum resource by measuring the reference resource includes:

determining time domain resources and frequency domain resources contained in the reference resources according to the reference resources;

and measuring the determined time domain resources and/or the frequency domain resources, and determining channel state information of a channel corresponding to the license-free spectrum resources according to the measurement result.

With reference to the fifteenth possible implementation manner of the third aspect of the present invention, in a sixteenth possible implementation manner of the third aspect, the measuring, by the sending unit, the determined time domain resources and/or the frequency domain resources includes:

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

and/or the presence of a gas in the gas,

and respectively carrying out channel measurement and/or interference measurement on the determined frequency domain resources.

With reference to the eleventh possible implementation manner of the third aspect of the present invention, or the twelfth possible implementation manner of the third aspect of the present invention, or the thirteenth possible implementation manner of the third aspect of the present invention, in a seventeenth possible implementation manner of the third aspect of the present invention, the transmitting unit is specifically configured to use, as the channel state information of the first unlicensed spectrum resource corresponding channel, the channel state information of the configured unlicensed spectrum resource corresponding channel 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 set third threshold.

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

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

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 indication information to a user equipment UE, where the indication information is used to indicate that the base station has preempted a 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 a channel corresponding to the first unlicensed spectrum resource, and the channel state information is determined by the UE according to a reference time point determined by the received indication information, and a reference resource is determined according to the reference time point and determined according to the reference resource.

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

With reference to the 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 send a cross-carrier signaling to the UE through a licensed spectrum resource and/or a second unlicensed spectrum resource that has been seized, where the cross-carrier signaling includes indication information sent by the base station, and the indication information includes a time unit indicated by the base station.

With reference to the 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 specifically configured to send control information to the UE through the first unlicensed spectrum resource, where the control information includes indication information sent by the base station, and the indication information includes a time unit indicated by the base station.

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

With reference to the possible implementation manners of the fourth aspect of the present invention, or with reference to the first possible implementation manner of the fourth aspect of the present invention, or with reference to the second possible implementation manner of the fourth aspect of the present invention, or with reference to the third possible implementation manner of the fourth aspect of the present invention, or with reference to the fourth possible implementation manner of the fourth aspect of the present invention, in a fifth possible implementation manner of the fourth aspect, the indication information includes at least one of the following information:

a preamble signal;

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

With reference to the possible implementation manners of the fourth aspect of the present invention, or with reference to the first possible implementation manner of the fourth aspect of the present invention, or with reference to the second possible implementation manner of the fourth aspect of the present invention, or with reference to the third possible implementation manner of the fourth aspect of the present invention, or with reference to the fourth possible implementation manner of the fourth aspect of the present invention, in a seventh possible implementation manner of the fourth aspect of the present invention, the sending unit is further configured to send a specific signaling to the UE, where the specific signaling includes channel state information of a channel corresponding to the configured unlicensed spectrum resource.

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

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

the signal receiver is used for acquiring indication information, wherein the indication information is used for indicating that a base station has preempted a first unlicensed spectrum resource;

the processor is used for determining a reference time point according to the acquired indication information; determining reference resources according to the reference time point, wherein the reference resources are used for determining a channel state of a channel corresponding to the first license-free spectrum resource which is preempted by the base station; determining channel state information of a channel corresponding to the first unlicensed spectrum resource according to the reference resource;

a signal transmitter for transmitting the determined channel state information to the base station.

With reference to possible implementation manners of the fifth aspect of the present invention, in a first possible implementation manner of the fifth aspect, the signal receiver is specifically configured to receive indication information sent by the base station through 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 acquired time when the indication information includes the indication information sent by the base station.

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the determining, by the processor, a reference time point according to a time when the acquired indication information includes the indication information sent by the base station includes:

With reference to the first possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, the determining, by the processor, a reference time point according to a time when the obtained indication information includes the indication information sent by the base station includes:

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

the processor determines a reference time point according to the acquired indication information, and the method includes:

and determining a reference time point according to the time unit indicated by the base station contained in the acquired indication information.

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

With reference to the fourth possible implementation manner of the fifth aspect of the present invention or the fifth possible implementation manner of the fifth aspect of the present invention, 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:

With reference to the possible embodiments of the fifth aspect of the present invention, or with reference to the first possible implementation manner of the fifth aspect of the present invention, or with reference to the second possible implementation manner of the fifth aspect of the present invention, or with reference to the third possible implementation manner of the fifth aspect of the present invention, or with reference to the fourth possible implementation manner of the fifth aspect of the present invention, or with reference to the fifth possible implementation manner of the fifth aspect of the present invention, or with reference to the sixth possible implementation manner of the fifth aspect of the present invention, in a seventh possible implementation manner of the fifth aspect, the indication information includes at least one of the following information:

a preamble signal;

In combination with the possible embodiments of the fifth aspect of the present invention, or the first possible embodiment of the fifth aspect of the present invention, or the second possible embodiment of the fifth aspect of the present invention, or the third possible embodiment of the fifth aspect of the present invention, or the fourth possible embodiment of the fifth aspect of the present invention, or the fifth possible embodiment of the fifth aspect of the present invention, or the sixth possible embodiment of the fifth aspect of the present invention, or the seventh possible embodiment of the fifth aspect of the present invention, in an eighth possible embodiment of the fifth aspect, the processor determines the reference resource according to the reference time point, including:

and according to the reference time point, taking the time domain resource corresponding to the time unit containing the reference time point as the reference resource.

In combination with the possible embodiments of the fifth aspect of the present invention, or the first possible embodiment of the fifth aspect of the present invention, or the second possible embodiment of the fifth aspect of the present invention, or the third possible embodiment of the fifth aspect of the present invention, or the fourth possible embodiment of the fifth aspect of the present invention, or the fifth possible embodiment of the fifth aspect of the present invention, or the sixth possible embodiment of the fifth aspect of the present invention, or the seventh possible embodiment of the fifth aspect of the present invention, in a ninth possible embodiment of the fifth aspect, the processor determines the reference resource according to the reference time point, including:

and selecting the time domain resource corresponding to the time unit with the distance between the time domain resource and the reference time point smaller than a set first threshold value as the reference resource according to the reference time point.

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 selecting, by the processor, a time domain resource corresponding to a time unit in which a distance between the reference time points is smaller than a set first threshold as the reference resource according to the reference time point includes:

With reference to the possible embodiments of the fifth aspect of the present invention, or with reference to the first possible embodiment of the fifth aspect of the present invention, or with reference to the second possible embodiment of the fifth aspect of the present invention, or with reference to the third possible embodiment of the fifth aspect of the present invention, or with reference to the fourth possible embodiment of the fifth aspect of the present invention, or with reference to the fifth possible embodiment of the fifth aspect of the present invention, or with reference to the sixth possible embodiment of the fifth aspect of the present invention, or with reference to the seventh possible embodiment of the fifth aspect of the present invention, in the eleventh possible embodiment of the fifth aspect,

the signal receiver is further configured to receive resource information, which is sent by the base station and used for reporting channel state information, where the resource information includes time domain resources;

the processor determines a reference resource according to the reference time point, and specifically includes:

and determining a reference resource according to the time domain resource contained in the resource information and the time domain resource corresponding to the reference time point, wherein the time point corresponding to the time domain resource contained 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 determining, by the processor, 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 includes:

With reference to the twelfth possible implementation manner of the fifth aspect of the present invention, in a thirteenth possible implementation manner of the fifth aspect, the set condition includes at least one of the following conditions:

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

and when the time difference value between the time corresponding to the time domain resource contained in the reference resource and the time corresponding to the time domain resource contained in the resource information is smaller than a set third threshold value, determining the channel state information of the channel corresponding to the first unlicensed spectrum resource by measuring the reference 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 determining, by the processor, channel state information of a channel corresponding to the first unlicensed spectrum resource by measuring the reference resource includes:

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 performing, by the processor, measurement on the determined time domain resources and/or the frequency domain resources includes:

and/or the presence of a gas in the gas,

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

and when the time difference between the time corresponding to the time domain resource contained in the reference resource and the time corresponding to the time domain resource contained in the resource information is not less than a set third threshold, 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.

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

and receiving a specific signaling sent by the base station, wherein the specific signaling comprises channel state information of a channel corresponding to the configured license-exempt spectrum resource.

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

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

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

With reference to the sixth possible implementation manner of the sixth aspect, in a first possible implementation manner of the sixth aspect, the signal transmitter is specifically configured to transmit indication information to the UE through the first unlicensed spectrum resource, where the indication information includes a time when the base station transmits the indication information.

With reference to the 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 send a cross-carrier signaling to the UE through a licensed spectrum resource and/or a second unlicensed spectrum resource that has been seized, where the cross-carrier signaling includes indication information sent by the base station, and the indication information includes a time unit indicated by the base station.

With reference to the sixth possible implementation manner of the sixth aspect, in a third possible implementation manner of the sixth aspect, the signal transmitter is specifically configured to transmit control information to the UE through the first unlicensed spectrum resource, where the control information includes indication information sent by the base station, and 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 time unit indicated by the base station includes at least one of the following information:

With reference to the possible embodiment of the sixth aspect of the present invention, or with reference to the first possible embodiment of the sixth aspect of the present invention, or with reference to the second possible embodiment of the sixth aspect of the present invention, or with reference to the third possible embodiment of the sixth aspect of the present invention, or with reference to the fourth possible embodiment of the sixth aspect of the present invention, in a fifth possible embodiment of the sixth aspect of the present invention, the indication information includes at least one of the following information:

a preamble signal;

With reference to the possible implementation manner of the sixth aspect of the present invention, or the first possible implementation manner of the sixth aspect of the present invention, or 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, or the fourth possible implementation manner of the sixth aspect of the present invention, in a sixth possible implementation manner of the sixth aspect, the signal transmitter is further configured to transmit, to the UE, resource information for reporting channel state information before transmitting indication information to the UE, where the resource information includes time domain resources.

With reference to the possible implementation manner of the sixth aspect of the present invention, or the first possible implementation manner of the sixth aspect of the present invention, or 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, or the fourth possible implementation manner of the sixth aspect of the present invention, in a seventh possible implementation manner of the sixth aspect, the signal transmitter is further configured to send a specific signaling to the UE, where the specific signaling includes channel state information of a channel corresponding to the configured unlicensed spectrum resource.

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

Has the advantages that:

the embodiment of the invention obtains the indication information through the UE, wherein the indication information is used for indicating that the base station has preempted the first license-free frequency spectrum resource. Therefore, under the condition that the unlicensed spectrum resource is used at a chance, the UE determines a reference time point in real time according to the indication information sent by the base station, and further determines a reference resource for measuring the channel state of the channel corresponding to the unlicensed spectrum resource occupied by the base station, so that the determined reference resource can be flexibly adjusted according to the unlicensed spectrum resource occupied by the base station, the UE accurately determines the channel state information matched with the channel corresponding to the unlicensed spectrum resource, the measurement precision of the channel state information is improved, and the data transmission efficiency of using the unlicensed spectrum resource is effectively ensured.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

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

fig. 2 is a schematic diagram of taking a time when the unlicensed spectrum resource is preempted as an initial transmission time of a preamble signal;

fig. 3 is a schematic diagram of the initial transmission time of the preamble signal;

fig. 4 is a schematic diagram of a subframe boundary at a time included in a time unit indicated by the base station;

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

FIG. 6 is a schematic diagram of a reference time point;

FIG. 7 is a diagram illustrating a starting position of a PDCCH;

FIG. 8 is a block diagram illustrating a determined reference resource location;

FIG. 9 is a block diagram of a determined reference resource location;

fig. 10 is a flowchart illustrating 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;

fig. 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 a UE acquires indication information, where the indication information is used to indicate that a base station has preempted a first unlicensed spectrum resource; determining a reference time point according to the acquired indication information; determining reference resources according to the reference time point, wherein the reference resources are used for measuring the channel state of the channel corresponding to the preempted first unlicensed spectrum resource; and determining channel state information of a channel corresponding to the first unlicensed spectrum resource according to the reference resource, and sending the determined channel state information to the base station.

Therefore, under the condition that the unlicensed spectrum resource is used at a chance, the UE determines a reference time point in real time according to the indication information sent by the base station, and further determines a reference resource for measuring the channel state of the channel corresponding to the unlicensed spectrum resource occupied by the base station, so that the determined reference resource can be flexibly adjusted according to the unlicensed spectrum resource occupied by the base station, the UE accurately determines the channel state information matched with the channel corresponding to the unlicensed spectrum resource, the measurement precision of the channel state information is improved, and the data transmission efficiency of using the unlicensed spectrum resource is effectively ensured.

The measurement of the channel state information is used for a wireless communication system, particularly for an LTE system with Licensed spectrum resource Assisted Access, namely an LTE system with Licensed Assisted Access (English: Licensed-Assisted Access; LAA). The LAA-LTE system refers to an LTE system in which a licensed spectrum resource and an unlicensed spectrum resource are used together by a Carrier Aggregation (CA) method or a non-CA method.

For example: the main application scenario is that licensed spectrum resources and unlicensed spectrum resources are used in a CA manner, that is, carriers included in the licensed spectrum resources or cells working on the licensed spectrum resources are used as main serving cells, and carriers included in the unlicensed spectrum resources or cells working on the unlicensed spectrum resources are used as auxiliary serving cells; and the main service cell and the auxiliary service cell are deployed in a common base station or in a non-common base station, and an ideal return path exists between the main service cell and the auxiliary service cell.

The embodiment of the present invention is not limited to be used in the CA scenario, and may also be used in other scenarios, for example: the serving cell is independently deployed on the unlicensed spectrum resource, and the serving cell has the function of providing independent access, so that the serving cell operating on the licensed spectrum resource is not required to assist. For another example, in a scenario where there is no ideal backhaul path between two serving cells (a primary serving cell and a secondary serving cell), for example, backhaul delay is large, so that 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, and when the licensed spectrum resource and the unlicensed spectrum resource perform carrier aggregation, the one or more carriers included in the licensed spectrum resource and the one or more carriers included in the unlicensed spectrum resource perform carrier aggregation.

The cell described in the embodiment of the present invention may be a cell corresponding to a base station, and the cell may belong to a macro base station or a micro base station, for example: and a base station corresponding to a Small Cell (English). Here, the small cell may further include: urban Cell (Metro Cell), micro Cell (Pico Cell), Pico Cell (Pico Cell), Femto Cell (Femto Cell), etc., which have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission service.

In the embodiment of the present invention, the concepts of carriers and cells in the LTE system are equivalent, for example, the concept of a cell will be introduced in the present invention when a UE accesses one carrier and accesses one cell.

Description of the user equipment: in the embodiment of the present invention, the UE may further include a Relay, and both the UE and the base station that can perform data communication may be regarded as the UE.

Various embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a flowchart illustrating a method for determining channel state information according to the present invention. The method may be as follows.

Step 101: user Equipment (User Equipment; abbreviated UE) acquires the indication information.

Wherein the indication information is used for indicating that the base station has preempted the first unlicensed spectrum resource.

Alternatively, the indication information may be transmitted by the base station through the unlicensed spectrum resource and/or transmitted 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 a first unlicensed spectrum resource that has been preempted, or may be a second unlicensed spectrum resource that has been preempted, and this is not limited here.

It should be noted that, here, the first unlicensed spectrum resource and the second unlicensed spectrum resource belong to different unlicensed spectrum resources.

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

the first mode is as follows:

and the UE receives the indication information sent by the base station through the first unlicensed spectrum resource.

Wherein, the indication information includes the time when the base station sends the indication information.

Specifically, the form of the indication information sent by the base station through the first unlicensed spectrum resource may include at least one of the following information:

a preamble signal;

downlink Control Information (DCI) carried by a Physical Downlink Control Channel (PDCCH, for short);

and DCI (Downlink Control Channel) carried by an Enhanced Physical Downlink Control Channel (EPDCCH).

If the indication information sent by the base station through the first unlicensed spectrum resource is a preamble signal, the UE detects the preamble signal and acquires the indication information from the detected preamble signal.

It should be noted that, if the indication information is obtained by detecting the preamble signal, one way is that the UE determines whether the indication information is obtained by detecting whether the preamble signal exists. That is, if the UE detects that the preamble exists, it indicates that the UE acquires the indication information, that is, the base station camps on the first unlicensed spectrum resource; or, if the form of the indication information sent by the base station through the first unlicensed spectrum resource is a preamble, correspondingly, "the UE receives the indication information sent by the base station through the first unlicensed spectrum resource" in the embodiment of the present invention, may be understood as "the UE receives the preamble signal sent by the base station through the first unlicensed spectrum resource," and the time when the indication information includes the indication information sent by the base station "may be understood as" the sending time of the preamble signal, that is, the time when the indication information is sent by the base station, "where the sending time of the preamble signal may be any time included from the starting time of sending the preamble signal to the ending time of sending the preamble signal.

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

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

While reference signals in LTE systems may include, but are not limited to: primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), Cell-specific Reference Signal (CRS), UE-specific Reference Signal (UE-specific Reference Signal) for Physical Downlink Shared Channel (PDSCH) data Demodulation, Demodulation Reference Signal (Signal) for Enhanced Physical Downlink Control Channel (EPDCCH) Demodulation, DM-RS), Positioning Reference Signal (position Reference Signal; PRS), Channel State Information Reference Signal (Channel Information Reference Signal; CSI-RS), Discovery Reference Signal (DRS).

The preamble signal carrying the indication information may occupy an integer number of Orthogonal Frequency Division Multiplexing (OFDM) symbols in time, may also occupy a fraction of OFDM symbols in time, may also occupy a part of the set OFDM symbols, and may also occupy an integer number or a fraction of OFDM symbols in the set OFDM symbols; the preamble signal carrying the indication information may occupy all the bandwidth of the unlicensed spectrum resource in the frequency domain or may occupy a part of the bandwidth of the unlicensed spectrum resource in the frequency domain on each OFDM symbol or each fractional OFDM symbol occupied by the preamble signal, and further, the preamble signal carrying the indication information may occupy different bandwidths of the unlicensed spectrum resource in the frequency domain or different fractional OFDM symbols occupied by the preamble signal on different OFDM symbols or different fractional OFDM symbols occupied by the preamble signal carrying the indication information, which is not specifically limited herein.

It should be noted that, the set OFDM symbol may include an OFDM symbol with a specific OFDM symbol index, for example, if a Normal Cyclic Prefix (Normal Cyclic Prefix) is used for the OFDM symbol, there are 14 OFDM symbols in a subframe, and the OFDM symbol index may be any integer from 0 to 13, which respectively corresponds to the 1 st OFDM symbol to the 14 th OFDM symbol in a subframe, where the set OFDM symbol refers to an OFDM symbol with an OFDM symbol index # k, where k may be any integer from 0 to 13. In this embodiment of the present invention, the set OFDM symbol may be one OFDM symbol, or may be multiple continuous or discontinuous OFDM symbols, which is not limited herein.

When the preamble is transmitted using a plurality of OFDM symbols in time, the UE may detect the preamble, or may detect only a part of the preamble.

For example, the preamble signal is sent by using a plurality of OFDM symbols in time, and the UE may detect only signals sent by 1 OFDM symbol to determine whether the base station camps on the unlicensed spectrum resource, and if the signals sent on the symbol are detected, may determine that the base station camps on the unlicensed spectrum resource, and may determine the starting position of preamble signal sending according to the positions of the symbol in all OFDM symbols occupied by the preamble signal; further, the end position of the preamble signal transmission may be determined according to the positions of the symbol in all the OFDM symbols occupied by the preamble signal and the number of the OFDM symbols occupied by the preamble signal. The above description also applies to the case where the preamble 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 a signal of the preamble signal on a part of the time resource, and further obtain the indication information by detecting a signal sequence constituting "a signal of the preamble signal on a part of the time resource", where the time resource may be an OFDM symbol, a fractional OFDM symbol, or other time units, and is not specifically limited herein, and the signal sequence is described as above and is not described in detail.

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 is present, indication information indicating that the base station has preempted the first unlicensed spectrum resource is present, that is, if the preamble signal is present, the indication information is present.

It should be noted that the role of the preamble signal may include at least one of the following: indicating that the LTE device occupies the unlicensed spectrum resource (or indicating that the LTE device can transmit data on the unlicensed spectrum resource), identifying an LTE cell, performing coarse frequency synchronization, performing coarse time synchronization, performing fine frequency synchronization, performing fine time synchronization, measuring CSI, and performing Automatic Gain Control (AGC).

In the embodiment of the present invention, the preamble signal carrying the indication information may be sent through the first unlicensed spectrum resource. The UE detects the preamble signal and determines whether the base station occupies the unlicensed spectrum resource by determining whether the preamble signal exists. If the UE detects the preamble signal, determining that the base station has preempted the license-free spectrum resource; and if the UE does not detect the preamble signal, determining that the base station does not occupy the license-free spectrum resource.

And if the indication information sent by the base station through the first unlicensed spectrum resource is DCI, the UE detects the DCI and acquires the indication information from the detected DCI.

That is, when the UE acquires the indication information, it may be determined that the base station has preempted the use opportunity of the unlicensed spectrum resource.

In this embodiment of the present invention, the DCI transmitted through the first unlicensed spectrum resource may be carried in a PDCCH transmitted through the first unlicensed spectrum resource, may also be carried in an EPDCCH transmitted through the first unlicensed spectrum resource, and may also be carried in another channel, for example, a PDSCH; the DCI transmitted through the first unlicensed spectrum resource may start transmission at a subframe boundary of a carrier or a cell corresponding to the first unlicensed spectrum resource, or may start transmission in the middle of a subframe.

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

Further, the UE may start transmitting at a fixed OFDM symbol boundary in the middle of a subframe to reduce the responsibility for blind detection of the UE.

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

Further, in order to reduce the UE blind detection complexity, the format and/or content of the DCI may be predefined, so that the UE may only detect DCI with a specific format and/or specific content, and not need to detect 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 time when the indication information includes the indication information sent by the base station may include, but is not limited to, the following situations:

the first case: when the base station preempts the use opportunity of the first unlicensed spectrum resource, the base station transmits the preamble signal on the first unlicensed spectrum resource, and then the time when the base station transmits the preamble signal may be the time when the base station transmits the indication information.

In this embodiment of the present invention, the time when the base station transmits the preamble signal may be any time included from a start time when the base station transmits the preamble signal to an end time when the base station transmits the preamble signal.

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

As shown in fig. 2, a time when the first unlicensed spectrum resource is preempted is taken as a starting transmission time of the preamble signal.

When the time of transmitting the preamble signal on the first unlicensed spectrum resource that the base station has preempted is the starting boundary of the OFDM symbol, then the starting transmission time of the preamble signal is as shown in fig. 3.

Specifically, after the base station preempts the unlicensed spectrum resource, the base station sends a pre-occupation signal from the time of the preemption to the unlicensed spectrum resource to the time of waiting for sending the preamble signal, and the pre-occupation signal mainly plays a role in representing that the base station occupies the unlicensed spectrum resource and does not need to be detected by the user equipment. The pre-occupied signal corresponds to a main scenario in which the starting time of data transmission on the unlicensed spectrum resource is predefined, for example, the starting time is a subframe boundary, a symbol boundary, or a slot boundary, where the data includes a preamble signal, a reference signal, a control channel, a data channel, and the like. Meanwhile, the time when the base station camps on the license-free spectrum resource is arbitrary, that is, may be an arbitrary time within one subframe, may also be an arbitrary time within one symbol, and may also be an arbitrary time within one time slot.

The second case: the time when the base station transmits the indication information may also be a starting time when the base station actually transmits data, and the time is later than a time when the usage opportunity of the first unlicensed spectrum resource is preempted. Here, the data actually transmitted may include PDCCH, PDSCH, EPDCCH, and the like.

The second mode is as follows:

and the UE receives cross-carrier signaling sent by the base station through the licensed spectrum resource and/or the preempted second license-free spectrum resource.

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

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

Wherein, the indication information includes the time unit indicated by the base station.

That is, when the LTE device (or the base station) occupies the usage opportunity of the unlicensed spectrum resource, the LTE device may send cross-carrier signaling on the unlicensed spectrum resource/licensed spectrum resource, so that the UE may acquire the indication information by detecting the cross-carrier signaling.

Specifically, the form of the cross-carrier signaling sent by the base station through the licensed spectrum resource and/or the preempted second unlicensed spectrum resource 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 PDCCH;

DCI carried by EPDCCH.

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

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

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, the time included in the time unit indicated by the base station is a schematic diagram of a subframe boundary; as shown in fig. 5, the time included in the time unit indicated for the base station is a schematic diagram of a symbol boundary.

It should be noted that fig. 4 and 5 are described by taking the example where the instruction information is transmitted from the licensed spectrum resource, and the same applies to the case where the instruction information is transmitted from the second unlicensed spectrum resource. In fig. 4 and fig. 5, the primary function of the pre-occupation signal is to enable the base station to occupy the channel after pre-occupying the unlicensed spectrum resource and before starting transmission of data, where the data may be a reference signal, data carried by a data channel, or a preamble signal.

Optionally, in this embodiment of the present invention, before detecting the content carried in the cross-carrier signaling, the UE may first cache the data of the first unlicensed spectrum resource, and then detect the content carried in the cross-carrier signaling, where a time unit indicated by the cross-carrier signaling may be located in the cached data. The method of buffering before detection is particularly suitable for a scenario when data of the first unlicensed spectrum resource starts to be transmitted in the middle of a subframe.

The third method comprises the following steps:

and the UE receives control information sent by the base station through the first unlicensed spectrum resource.

Wherein, the control information includes indication information sent by the base station.

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

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

Here, the time when the base station performs data transmission using the first unlicensed spectrum resource may be any time included from time T1 to time T2, where time T1 may correspond to a starting time when the base station camps on the first unlicensed spectrum resource, and 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 correspond to a time corresponding to a maximum time at which the base station may use the first unlicensed spectrum resource without having to acquire the transmission opportunity of the first unlicensed spectrum resource by listening again.

For example, assuming that the base station camps on the first unlicensed spectrum resource at time T1, the maximum time for which the first unlicensed spectrum resource is not required to be used again by listening is x ms, then time T2 may correspond to a corresponding time (T1+ x ms).

In other words, the time when the base station performs data transmission using the first unlicensed spectrum resource may be any time included in a time period after the base station preempts the first unlicensed spectrum resource and before the base station finishes using the first unlicensed spectrum resource, and during this time period, the base station does not need to listen to the use opportunity of acquiring the first unlicensed spectrum resource again.

The time when the base station schedules the UE with the first unlicensed spectrum resource may be a starting time when the base station schedules the UE with the first unlicensed spectrum resource, for example, a subframe boundary, an Orthogonal Frequency Division Multiplexing (OFDM) symbol boundary, a Slot (Slot) boundary, or the like. The scheduled data may be PDSCH, etc. It should be noted that, in this embodiment of the present invention, before detecting the control information sent by the first unlicensed spectrum resource, the UE may first cache data of the first unlicensed spectrum resource, and then detect the control information sent by the first unlicensed spectrum resource, where a time unit indicated by the control information sent by the first unlicensed spectrum resource may be located in the cached data. The method of buffering before detection is particularly suitable for a scenario when data of the first unlicensed spectrum resource starts to be transmitted in the middle of a subframe.

Step 102: and the UE determines a reference time point according to the acquired indication information.

The reference time point may be used to characterize a time when the base station transmits data on the first unlicensed spectrum resource after preempting a use opportunity of the unlicensed spectrum resource.

Therefore, the UE establishes a foundation for effectively improving the accuracy of the channel state information of the first license-free spectrum resource which is determined to be occupied by the base station during data transmission by determining the reference time point.

In step 102, the method for the UE to determine the reference time point according to the acquired indication information includes, but is not limited to:

the first mode is as follows:

if the indication information includes the time when the base station sends the indication information, the UE determines a reference time point according to the obtained indication information, including:

Specifically, the UE determines a time when the base station transmits the indication information as a reference time point.

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

the first case: when the base station preempts the usage opportunity of the first unlicensed spectrum resource, the base station transmits the preamble signal on the first unlicensed spectrum resource, and then a time when the base station transmits the preamble signal may be a time when the base station transmits the indication information, where the time when the preamble signal is transmitted may be any time included from a start time when the preamble signal is transmitted to an end time when the preamble signal is transmitted.

Specifically, the time when the base station transmits the preamble signal may occupy an integer number of OFDM symbols, or may occupy a fractional number of OFDM symbols, or may occupy a part of the set OFDM symbols, or may occupy an integer number of or a fractional number of OFDM symbols in the set OFDM symbols.

The second case: the time when the base station transmits the indication information may also be a starting time when the base station actually transmits data, and the time is later than a time when the usage opportunity of the first unlicensed spectrum resource is preempted.

Specifically, the base station preempts the use opportunity of the first unlicensed spectrum resource through energy detection and/or signal analysis, and the base station firstly transmits a preemption signal and then transmits the indication information before transmitting data.

Specifically, after the base station preempts the unlicensed spectrum resource, the base station sends a pre-occupation signal from the time of preempting the unlicensed spectrum resource to the time of waiting for the start time of data transmission, where the pre-occupation signal mainly serves to represent that the base station has occupied the unlicensed spectrum resource, and may not need the user equipment to detect the unlicensed spectrum resource. When the pre-occupation signal corresponds to a main scene, the starting time of data transmission is predefined, for example, a subframe boundary, a symbol boundary, and a slot boundary, and meanwhile, the time when the base station pre-occupies the unlicensed spectrum resource is arbitrary, that is, may be an arbitrary time within one subframe, may be an arbitrary time within one symbol, or may be an arbitrary time within one slot.

The camping signal may be a part of the preamble signal, or may be another signal, which is not limited herein.

Therefore, the time when the base station sends the indication information may be the time when the base station sends a preamble signal when preempting the first unlicensed spectrum resource; it may also be a starting time when the base station actually transmits data while preempting the first unlicensed spectrum resource.

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

the time when the base station sends the preamble signal when preempting the first license-free frequency spectrum resource;

and the base station actually sends the data at the starting moment when the first unlicensed spectrum resource is preempted.

Optionally, the reference time point determined by the UE through the time when the base station transmits the indication information may further include any time included from a start time when the base station actually transmits data to an end time when the base station actually transmits data while preempting the first unlicensed spectrum resource.

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

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

It should be noted that the starting time of sending data may also be adjusted according to the time when the base station camps on the first unlicensed spectrum resource. For example: the time when the base station occupies the first license-free spectrum resource is the initial boundary of a subframe, and the base station needs to send a preamble signal before sending data each time, the base station starts to send the preamble signal from the boundary of the subframe, and after the sending of the preamble signal is finished, the base station starts to send control data and/or service data; alternatively, the first and second electrodes may be,

the time when the base station occupies the first unlicensed spectrum resource is the starting boundary of a subframe, and the base station simultaneously sends a preamble signal and control data, or simultaneously sends the preamble signal and service data, or simultaneously sends the preamble signal, the control data and the service data from the starting boundary of the subframe. At this time, when performing data transmission, the base station may transmit the preamble signal, the control data, and the traffic data orthogonally and separately by using frequency division multiplexing, code division multiplexing, or the like.

The second mode is as follows:

For example: the preset corresponding relation between the reference time point and the time when the base station sends the indication information is the predefined time interval between the reference time point and the time when the base station sends the indication information, namely the time when the predefined time interval is between the reference time point and the time when the base station sends the indication information is taken as the reference time point. Specifically, the reference time point may be a time corresponding to a predefined time length before a time when the base station transmits the indication information; or a time corresponding to a predefined time length after the time when the base station transmits the indication information may also be used, which is not limited herein.

For example, the preamble occupies 4 OFDM symbols in time, and the UE may determine that the base station camps on the unlicensed spectrum resource only by detecting a first signal transmitted at the 2 nd OFDM symbol, where the first signal is a part of the preamble. That is, at this time, the time when the UE detects that the base station transmits the indication information may be a time position where a 2 nd OFDM symbol is located among 4 OFDM symbols included in the preamble signal. For example, expressed by the symbol index of the 2 nd OFDM symbol, the predefined duration may be 1 OFDM symbol, and the reference time point is defined to be before the time when the base station transmits the indication information, then the UE may determine that the reference time point is the 1 st OFDM symbol of the 4 OFDM symbols occupied by the preamble signal in time; still alternatively, the predefined duration may be 3 OFDM symbols, and the reference time point is defined to be after the time when the base station transmits the indication information, then the UE may determine that the reference time point is a time corresponding to an end position of the preamble signal in time. The reference time point as shown in fig. 6 may be a time point (including the start transmission position and the end transmission position of the preamble signal) that any UE can recognize from the start transmission position to the end transmission position of the preamble signal, such as an OFDM symbol boundary, a fractional OFDM symbol boundary, and an inverse of a sampling rate employed in an integer number of LTE systems.

It should be noted that the predefined time duration may be represented by an integer number of OFDM symbols, or may be represented by a fractional number of OFDM symbols, where the number of the fractional OFDM symbols may be 1 or multiple.

It should be noted that the reference time point is determined according to a correspondence between a preset reference time point and a time when the base station transmits the indication information and an acquired time when the base station transmits the indication information, and an OFDM symbol boundary, or a fractional OFDM symbol boundary, or a slot boundary, or a subframe boundary that is closest to the time when the base station transmits the indication information before or after the time when the base station transmits the indication information may be used as the reference time point.

It should be noted that, in the second method, determining the time when the base station transmits the indication information may include two situations described in the first method, and details are not repeated here.

The third mode is as follows:

if the indication information includes the time unit indicated by the base station, the UE determines a reference time point according to the obtained indication information, including:

Wherein the time unit indicated by the base station comprises at least one of the following information:

Generally, if the time unit indicated by the base station is the time when the base station performs data transmission using the first unlicensed spectrum resource, as described above, the time unit may be any time included from time T1 to time T2, where time T1 may correspond to a starting time when the base station camps on the first unlicensed spectrum resource, and 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 correspond to a time corresponding to a maximum time at which the base station may use the first unlicensed spectrum resource without having to acquire the transmission opportunity of the first unlicensed spectrum resource by listening again.

The time when the base station schedules the UE with the first unlicensed spectrum resource may be a starting time when the base station schedules the UE with the first unlicensed spectrum resource, for example, a subframe boundary, an Orthogonal Frequency Division Multiplexing (OFDM) symbol boundary, a Slot (Slot) boundary, or the like. The scheduled data may be PDSCH, etc.

Specifically, if the time unit indicated by the base station is the starting time of the base station for performing data transmission by using the first unlicensed spectrum resource, the starting time of the base station for performing data transmission by using the first unlicensed spectrum resource is at a subframe boundary, or at a slot boundary, or at a preset OFDM symbol boundary, so that the complexity of blind detection performed by the UE on the starting time of data transmission by using the unlicensed spectrum resource is effectively reduced.

If the time unit indicated by the base station is the time when the base station transmits the preamble signal by using the first unlicensed spectrum resource, the starting time when the base station performs data transmission by using the first unlicensed spectrum resource is at the boundary of an OFDM symbol, or at the boundary of a fraction of OFDM symbols. Specifically, the time when the base station sends the preamble signal using the first unlicensed spectrum resource may be from a start position of data transmission (for example, an OFDM symbol boundary) after the unlicensed spectrum resource is preempted and closest to the time corresponding to the preempted unlicensed spectrum resource to the unlicensed spectrum resource to a start position of a next closest subframe boundary.

It should be noted that the time unit indicated by the base station may also be any time position recognizable by the UE between the starting position of transmitting the preamble signal and the ending position of transmitting the preamble signal, and the position recognizable by the UE may be an OFDM symbol boundary, a fractional OFDM symbol boundary, and an integer multiple of the inverse sampling rate.

Optionally, if the time unit indicated by the base station is a time position identifiable by any UE between a starting position at which the preamble signal is sent and an ending position at which the preamble signal is sent, the UE may buffer data that may be transmitted on an unlicensed spectrum resource before the indication information, where the indication information may be sent through at least one of the following resources: the licensed spectrum resource, the preempted second unlicensed spectrum resource, the first unlicensed spectrum resource.

The fourth mode is that:

and the UE takes the time position indicated by the DCI carried by the PDCCH as a reference time point by detecting the PDCCH on the license-exempted spectrum resource. Or the UE detects the EPDCCH on the unlicensed spectrum resource and takes the time position indicated by the DCI carried by the EPDCCH as a reference time point.

The time position indicated by the DCI may be a time position occupied by the PDCCH for transmitting the DCI, may also be a time position occupied by the EPDCCH for transmitting the DCI, may also be other time positions indicated by the PDCCH, and may also be other time positions indicated by the EPDCCH, which is not limited herein.

Specifically, to reduce the complexity of UE blind detection, the time position of 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 a subframe boundary, or the starting position of the PDCCH is at a slot boundary, or the starting position of the PDCCH is at a fixed position of a subframe, and for example: the fixed position may refer to a time position corresponding to 1/N subframe length within one subframe, a time position corresponding to 2/N subframe length within 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 predefined starting position of the PDCCH and the predefined format of the PDCCH; if a PDCCH of a predefined format is detected at a predefined position, it can be determined that the base station camps on the license-exempted spectrum resource, and a start position of the PDCCH is determined, and the determined start position of the PDCCH is used as a reference time point.

As shown in fig. 7, a diagram of the starting position of the PDCCH is shown.

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

The reference resource is used for determining a channel state of a channel corresponding to the first unlicensed spectrum resource which has been preempted by the base station.

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

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

Specifically, the UE determines the reference resource according to the reference time point by a manner including, but not limited to:

the first mode is as follows:

and the UE selects the time domain resource corresponding to the time unit with the distance from the reference time point meeting the set first threshold value as the reference resource according to the reference time point.

The first threshold may be a closest distance value determined according to a distance from the reference time point, may be an integer number of OFDM symbols or a fractional number of OFDM symbols, and may also be in other expressions, which are not limited herein.

For example: and the UE takes the time domain resource corresponding to the time unit closest to the reference time point as the reference resource after 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 has an association relationship with the start time of the data transmission of the first unlicensed spectrum resource, or the determined reference time point includes the start time of the data transmission of the first unlicensed spectrum resource, the base station will use the first unlicensed spectrum resource to perform the data transmission with the UE within a period of time after the reference time point. Then, the time domain resource corresponding to the nearest 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, which can ensure that the reference resource is located within the time range of the base station and the UE using the first unlicensed spectrum resource for data communication.

It should be noted that, in the embodiment of the present invention, the determined reference resource is mainly described from the perspective of a time domain resource, and as for a resource occupied by the reference resource in a frequency domain, for example, all frequency resources or a part of frequency resources of the first unlicensed spectrum resource corresponding to the time domain resource, in the embodiment of the present invention, no specific limitation is made.

The second mode is as follows:

and the UE receives resource information which is sent by the base station and used for reporting the channel state information.

Wherein, the resource information includes time domain resources.

And the UE determines the reference resource according to the time domain resource contained 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 also be a time domain resource corresponding to a time unit closest to the reference time point, and is not limited specifically herein. The time unit may be any one of a radio frame, a subframe, a time slot, and an OFDM symbol, and correspondingly, the time domain resource corresponding to the time unit may be a time domain resource included in the radio frame, a time domain resource included in the subframe, a time domain resource included in the time slot, and a time domain resource included in the OFDM symbol, which is not described herein again.

Wherein a time point corresponding to a time domain resource contained 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 a subframe, the time point corresponding to the time domain resource included in the reference resource may be any time included between the starting boundary of the subframe and the ending boundary of the subframe; if the time domain resource contained in the reference resource is the time domain resource corresponding to one time slot, the time point corresponding to the time domain resource contained in the reference resource may be any time included between the starting boundary of the time slot and the ending boundary of the time slot; if the time domain resource contained in the reference resource is the time domain resource corresponding to a plurality of OFDM symbols, the time point corresponding to the time domain resource contained in the reference resource may be any time included between the starting boundary of the plurality of OFDM symbols and the ending boundary of the plurality of OFDM symbols.

The time corresponding to the time domain resource included in the resource information sent by the base station by the UE for reporting the channel state information may be within a time range in which the base station camps on the use opportunity of the first unlicensed spectrum resource, or may be outside a time range in which the base station does not camp on the use opportunity of the first unlicensed spectrum resource.

The time corresponding to the reference resource determined by the UE may be within a time range of the opportunity for the base station to camp on the first unlicensed spectrum resource.

The time domain resources included in the resource information may be represented by subframes, or may be represented in other forms, for example: OFDM symbol representation, slot representation, radio frame representation, etc.

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 continuous or discontinuous subcarriers, an integer number of continuous or discontinuous Resource elements (english: Resource Element; RE), an integer number of Resource blocks (english: Resource Block; RB), and the like.

The manner of the UE receiving the resource information for reporting the channel state information sent by the base station may be physical layer signaling, RRC signaling, MAC signaling, or 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, and is not limited in this respect.

Specifically, the UE selects, as the reference resource, the time domain resource that meets the set condition from 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.

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

Is shown in which n is_fRepresents the radio frame index and has a value ranging from 0 to 10239Any integer value of n_sIndicating the slot index, takes any integer value from 0 to 19,

indicating rounding down on x. All time domain resources included from the time domain resource corresponding to the reference time point to the time domain resource included in the resource information may include time domain resources included from a subframe with a subframe index # k to a subframe with a subframe index # m.

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

the first condition is as follows: and the distance between the time domain resource and the time domain resource contained in the resource information meets a set second threshold, and is positioned behind the time domain resource corresponding to the reference time point and in front of the time domain resource contained in the resource information.

The second threshold set here may satisfy a time required for the UE to report the channel state information from the determination of the channel state information based on the reference resource, for example, a length of 4 subframes, a length of 2 subframes, or the like.

And a second condition: and the distance between the time domain resources contained 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 it can be ensured that the reference resource for determining the channel state information is closer to the reference time point and that the determined channel state information is closer to the corresponding channel state information after camping on the unlicensed spectrum 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 method has the advantages that the reference resource for determining the channel state information can be ensured to be closer to the time domain resource contained in the resource information, and the base station can utilize the channel state information reported by the time domain resource UE contained in the resource information to schedule data for the UE, for example, an appropriate Modulation Coding Scheme (MCS) is selected, so that the time domain resource corresponding to the reference time point closest to the time domain resource contained in the resource information is used as the reference resource, the channel state information reported by the UE can be ensured to be closer to the channel state information corresponding to the time point after reporting the resource time, and the base station can select the channel state information closer to the data scheduling time according to the channel state information reported by the UE when the base station utilizes the resource after reporting the resource time to schedule the UE data. For example, the base station performs data transmission by using the preemption-exempt licensed spectrum resource in a continuous time from the time t1 to the time t2, and the first reference time point determined by the UE is in the continuous time; the base station also utilizes the preemption to the unlicensed spectrum resource for data transmission in the continuous time between the time t3 and the time t4, the second reference time point determined by the UE is in the continuous time, the time domain resource contained in the resource information determined by the UE is at the time t5, wherein the times represented by t1, t2, t3, t4 and t5 are from front to back, and according to the condition three, 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 in the embodiment of the present invention may be determined according to experimental data, or may be determined according to actual needs, and the implementation manner is not limited here.

Step 104: and the UE determines the channel state information of a 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 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 set third threshold, the UE determines channel state information of a channel corresponding to the first unlicensed spectrum resource by measuring 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 including the reference resource, and the time unit may be any one of a radio frame, a subframe, a time slot, and an OFDM symbol, as described above; correspondingly, the time domain resource corresponding to the time unit of the reference resource may be a time domain resource included in a radio frame, a time domain resource included in a subframe, a time domain resource included in a slot, and a time domain resource included in an OFDM symbol; accordingly, the time corresponding to the time domain resource contained in the reference resource can be represented by at least one of: radio frame index, subframe index, slot index, OFDM index. On the other hand, in the embodiment of the present invention, the time domain resources included in the resource information may be represented by using subframes, or may be represented in other forms, for example: OFDM symbol representation, slot representation, radio frame representation, etc., and accordingly, the time corresponding to the time domain resource contained in the resource information may be represented by at least one of: subframe index, OFDM symbol index, slot index, radio frame index. 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 by the UE may be represented by at least one of: an integer number of subframes, an integer number of OFDM symbols, an integer number of slots, an integer number of radio frames, or also by an integer number of inverse sample rates, wherein 15360 × Ts is 0.5 ms, provided that the inverse sample rate can be represented by Ts. In an embodiment of the present invention, the third threshold may also be represented by at least one of: an integer number of subframes, an integer number of OFDM symbols, an integer number of slots, an integer number of radio frames, and an integer number of inverse sample rates.

Specifically, the UE determines, according to the reference resource, a time domain resource and a frequency domain resource included in the reference resource; and the UE measures the determined time domain resource and/or the determined frequency domain resource, determines channel state information of a channel corresponding to the unlicensed spectrum resource according to a measurement result, and determines that the frequency domain resource contained in the reference resource can be known by the UE through other modes, such as predefinition, standard protocol specification, physical layer signaling, RRC signaling, MAC notification and the like.

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

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

And determining channel state information of a channel corresponding to the license-free spectrum resource according to the channel measurement result and/or the interference measurement result.

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

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

Wherein, the specific signaling includes channel state information of a channel corresponding to the configured unlicensed spectrum resource.

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

Alternatively, the specific signaling may also enable the UE to determine the channel state information of the channel corresponding to the configured unlicensed spectrum resource in a predefined manner specified by a standard protocol.

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

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

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

Optionally, when a time difference between a time corresponding to a 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 set third threshold, the UE obtains channel state information of a channel corresponding to the first unlicensed spectrum resource according to a correspondence between the configured reference resource and channel state information of a channel corresponding to the unlicensed spectrum resource and the determined reference resource.

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

In this 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 one to one, for example, by using a Channel Quality Indicator (CQI) index, and the Channel state information of the Channel corresponding to the configured unlicensed spectrum resource may be represented by a specific CQI index in an existing LTE system, for example: the CQI index 0, the CQI index 1, or other CQI indexes, optionally configured CQI indexes, can meet the requirement that if the base station schedules the UE using the channel state information corresponding to the configured CQI index, it can be ensured that the initial transmission success rate of data transmission, e.g., downlink data transmission, between the base station and the UE is not lower than a certain threshold, e.g., 90%.

Optionally, the specific CQI index may also be different from a CQI index supported in an existing LTE system, and may be represented by the specific CQI index, a time difference between a reference resource of a reporting resource corresponding to the specific CQI index and the reporting resource of the specific CQI index is not less than a set third threshold, and the base station may confirm, according to the specific CQI index, that channel state information determined by the reference resource corresponding to the current reporting resource is inaccurate, or that the time difference between the reference resource and the reporting resource is not less than the set third threshold. Particularly, the specific CQI index may be different from a CQI index 0 supported in an existing LTE system, because at present, if the UE reports the CQI index 0, and particularly when reporting the CQI index 0 for the secondary serving cell, a base station to which the secondary serving cell belongs may determine that Radio link detection (RLM) of the UE on the secondary serving cell fails, and therefore if the CQI index 0 is multiplexed, the base station may erroneously determine that the Radio link of the secondary serving cell fails, so that the specific CQI index different from the CQI index 0 may be introduced, so that the base station may not only correctly determine whether the Radio link of the secondary serving cell fails, but also determine a relationship between a time difference between a reporting resource and a reference resource corresponding to the reporting resource and a set third threshold.

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 mode is as follows:

and the UE periodically reports the determined channel state information.

Specifically, assume that in step 103, a reference resource is determined in a manner that satisfies the third condition, and channel state information between the base station and the UE is obtained according to the determined reference resource, as shown in fig. 8, which is a schematic structural diagram of the determined reference resource location.

As can be seen from fig. 8, it is assumed that the time resource for reporting the channel state information may be located in the licensed spectrum resource or the unlicensed spectrum resource, and is represented by time resource 1, time resource 2, and time resource 3, respectively.

The shaded parts marked as "4" and "5" represent the time positions of the base station occupying the license-exempt spectrum resources, wherein the reference resources are included in the resources corresponding to the time positions of "4" and "5".

When the UE reports the channel state information in the time resource 1, the channel state information may be determined according to the reference resource included in "4" closest to the time resource 1, where the way of determining the channel state information is that the UE may perform channel and/or interference measurement by using the reference resource included in the time resource "4";

similarly, when the UE reports the channel state information in the time resource 2, the UE may determine the channel state information according to the reference resource included in the "5" closest to the time resource 2;

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

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

This is advantageous in that, if the time interval between the reference resource closest to the reporting resource and the reporting resource exceeds the third threshold, it indicates that, even though the UE measures the channel state information according to the reference resource and reports the determined channel state information, the reported channel state information cannot reflect the channel state between the base station and the UE on the unlicensed spectrum after the reporting resource because the time interval between the reference resource and the reporting resource on which the channel state information is based is too long, and therefore, in order to save the operation of the UE, the UE may directly report the configured channel state information without performing channel state information measurement.

It should be noted that, for the reporting resource 6 appearing after the reporting resource 3, if a reference resource corresponding to the reporting resource 6 that is valid can be found, for example, a time interval between a reference resource (located in the time resource "7") closest to the reporting resource 6 and the reporting resource does not exceed a third threshold, the UE may perform channel and/or interference measurement according to the reference resource included in "7" as shown in fig. 9, and determine the channel state information to be reported by the reporting resource 6. For the LTE system, the channel state information reported by the UE periodically in time may have some relation, for example, the UE calculates CQI according to RI or PMI. The channel state information reported by the UE on the reporting resource 6 may or may not be related to the previously configured channel state information.

Specifically, for the situation shown in fig. 9, there may be a problem that, assuming that the channel state information reported by the UE on the reporting resource 3 indicates full-band channel state information, since the distance between the reference resource (located at time resource "5") closest to the reporting resource 3 and the reporting resource "3" exceeds the third threshold, the Rank Indication (RI) reported by the reporting resource 3 is configured channel state information, and at this time, the UE reports a Precoding Matrix Indication (PMI) and/or a CQI on the reporting resource 6, which may be calculated based on the configured RI reported by the reporting resource 3, or may recalculate the RI according to the reference resource included in "7", and calculate the PMI and/or the CQI information based on the recalculated RI.

Correspondingly, at the reporting resource 6, the UE may report the RI recalculated based on "7" first, and then report the PMI and/or CQI at other reporting resources after reporting the resource 6, or the UE may directly report the channel state information recalculated according to "7" including the PMI, RI, and CQI. In this way, if the UE recalculates the channel state information based on the reference resource included in the time resource "7" and does not utilize the configured channel state information corresponding to the reference resource included in the time resource "5", the eNB needs to be informed which reporting method is adopted.

The second mode is as follows:

and the UE non-periodically reports the determined channel state information.

Specifically, the specific manner of reporting the channel state information by the UE aperiodically is similar to the specific manner of reporting the channel state information periodically.

However, for the UE with CA capability, the base station may configure the UE with multiple serving cells (serving cells) through RRC signaling, and the base station may trigger the UE to report channel state information measured by the multiple serving cells through aperiodic channel state information trigger signaling.

For a serving cell carrying an aperiodic channel state information trigger signaling, the unlicensed spectrum resource is correspondingly preempted, and for other serving cells indicated in the trigger signaling, due to the random use of the unlicensed spectrum resource, the unlicensed spectrum resource may not be preempted, so for other serving cells which do not preempt the unlicensed spectrum resource and belong to the triggering channel state information report, the UE also needs to determine the channel state information by the method for determining the reference resource mentioned in the embodiment of the present invention.

According to the scheme of the embodiment of the invention, the UE acquires the indication information, wherein the indication information is used for indicating that the base station has preempted the first license-free frequency spectrum resource; determining a reference time point according to the acquired indication information; determining reference resources according to the reference time point, wherein the reference resources are used for measuring the channel state of the channel corresponding to the preempted first unlicensed spectrum resource; and determining channel state information of a channel corresponding to the first unlicensed spectrum resource according to the reference resource, and sending the determined channel state information to the base station. Therefore, under the condition that the unlicensed spectrum resource is used at a chance, the UE determines a reference time point in real time according to the indication information sent by the base station, and further determines a reference resource for measuring the channel state of the channel corresponding to the unlicensed spectrum resource occupied by the base station, so that the determined reference resource can be flexibly adjusted according to the unlicensed spectrum resource occupied by the base station, the UE accurately determines the channel state information matched with the channel corresponding to the unlicensed spectrum resource, the measurement precision of the channel state information is improved, and the data transmission efficiency of using the unlicensed spectrum resource is effectively ensured.

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

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

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

the first mode is as follows:

The second mode is as follows:

and the base station sends cross-carrier signaling to the UE through the licensed spectrum resource and/or the preempted second unlicensed spectrum resource.

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

The third mode is as follows:

and the base station sends control information to the UE through the first license-free frequency spectrum resource.

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

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

a preamble signal;

DCI carried by PDCCH;

DCI carried by EPDCCH.

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

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

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

In step 1002, the method further comprises:

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

It should be noted that, in this embodiment of the present invention, no matter which way the reference resource is determined, the reference resource may be located in a time-frequency resource included after the base station preempts the first unlicensed spectrum resource and before the base station releases the first unlicensed spectrum resource, and is particularly suitable for determining that the CSI corresponding to the first unlicensed spectrum used by the base station is CSI.

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

an obtaining unit 1101, configured to obtain indication information, where the indication information is used to indicate that a base station has preempted a 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; determining reference resources according to the reference time point, wherein the reference resources are used for determining a channel state of a channel corresponding to the first license-free spectrum resource which is preempted by the base station;

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

Specifically, the obtaining unit 1101 is specifically configured to receive indication information sent by a base station through 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 a reference time point according to the time when the indication information acquired by the acquiring unit 1101 includes the indication information sent by the base station.

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

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

the determining unit 1102 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 1101.

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

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

a preamble signal;

Specifically, the determining unit 1102 is specifically configured to, according to the reference time point, use a time domain resource corresponding to a time unit including 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 whose distance from the reference time point is smaller than a set first threshold as the reference resource.

Specifically, the determining unit 1102 selects, according to the reference time point, a time domain resource corresponding to a time unit whose distance from the reference time point is smaller than a set first threshold as a reference resource, including:

Specifically, the obtaining unit 1101 is further configured to receive resource information, which is sent by a base station and used for reporting channel state information, where the resource information includes time domain resources;

the determining unit 1102 is specifically configured to determine the reference resource according to the time domain resource included in the resource information received by the obtaining unit 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.

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

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

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 set third threshold, measure the reference resource, and determine channel state information of a channel corresponding to the first unlicensed spectrum resource.

Specifically, the sending unit 1103 determines, by measuring the reference resource, channel state information of a channel corresponding to the first unlicensed spectrum resource, including:

Specifically, the measuring, by the sending unit 1103, the time domain resources and/or the frequency domain resources that are determined includes:

and/or the presence of a gas in the gas,

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 set third threshold, use the channel state information of the configured unlicensed spectrum resource corresponding to the channel as the channel state information of the first unlicensed spectrum resource corresponding to the channel.

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

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

It should be noted that the determining device in the embodiment of the present invention may be a user device, other terminal devices, or a logic component in the user device; the method can be implemented by software or hardware, and is not limited herein.

Fig. 12 is a schematic structural diagram of a device for determining channel state information according to an embodiment of the present invention. The determination device includes: a transmitting unit 1201 and a receiving unit 1202, wherein:

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

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

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

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

Specifically, the sending unit 1201 is specifically configured to send control information to the UE through the first unlicensed spectrum resource, where the control information includes indication information sent by the base station, and the indication information includes a time unit indicated by the base station.

a preamble signal;

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

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

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 logic component in the base station device; the method can be implemented by software or hardware, and 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 determination device includes: the signal receiver 1301, the processor 1302 and the signal transmitter 1303, wherein the signal receiver 1301, the processor 1302 and the signal transmitter 1303 may be connected to each other through a communication bus 1304.

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

a processor 1302, configured to determine a reference time point according to the obtained indication information; determining reference resources according to the reference time point, wherein the reference resources are used for determining a channel state of a channel corresponding to the first license-free spectrum resource which is preempted by the base station; determining channel state information of a channel corresponding to the first unlicensed spectrum resource according to the reference resource;

and a signal transmitter 1303, configured to send the determined channel state information to the base station.

Specifically, the signal receiver 1301 is specifically configured to receive indication information sent by the base station through 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 obtained indication information including the time when the base station sends the indication information.

Specifically, the determining, by the processor 1302, a reference time point according to the acquired time when the indication information includes the indication information sent by the base station, includes:

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

the processor 1302 determines a reference time point according to the acquired indication information, including:

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

a preamble signal;

Optionally, the processor 1302 determines, according to the reference time point, a reference resource, including:

Optionally, the selecting, by the processor 1302, a time domain resource corresponding to a time unit, where a distance between the time unit and the reference time point is smaller than a set first threshold, as the reference resource according to the reference time point includes:

Optionally, the signal receiver 1301 is further configured to receive resource information, which is sent by the base station and used for reporting channel state information, where the resource information includes time domain resources;

the processor 1302 determines, according to the reference time point, a reference resource, which specifically includes:

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:

Optionally, the processor 1302 determines, according to the reference resource, channel state information of a channel corresponding to the first unlicensed spectrum resource, where the determining includes:

Optionally, the processor 1302 determines, by measuring the reference resource, channel state information of a channel corresponding to the first unlicensed spectrum resource, including:

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

and/or the presence of a gas in the gas,

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

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 programs according to 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.

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

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

Specifically, the signal transmitter 1401 is specifically configured to transmit, to the UE, indication information through the first unlicensed spectrum resource, where the indication information includes a time when the base station transmits the indication information.

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

Specifically, the signal transmitter 1401 is specifically configured to transmit, to the UE, control information through the first unlicensed spectrum resource, where the control information includes indication information sent by the base station, and the indication information includes a time unit indicated by the base station.

a preamble signal;

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

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

The determining device provided by the embodiment can solve the problem in the prior art that how to improve the accuracy of the channel state information of the channel corresponding to the unlicensed spectrum resource is determined in the scenario of opportunistic use of the unlicensed spectrum resource.

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

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

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

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

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

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

Claims

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

the UE determines a reference time point according to the acquired indication information; the reference time point is used for representing the moment when the base station transmits data on the first unlicensed spectrum resource after preempting the opportunity of using the first unlicensed spectrum resource;

the UE determines channel state information of a channel corresponding to the first license-free spectrum resource according to the reference resource and sends the determined channel state information to the base station;

wherein the method further comprises: the UE receives resource information which is sent by the base station and used for reporting channel state information, wherein the resource information comprises time domain resources; the UE determines a reference resource according to the reference time point, which specifically includes: and the UE determines a reference resource according to the time domain resource contained in the resource information and the time domain resource corresponding to the reference time point, wherein the time point corresponding to the time domain resource contained in the reference resource lags behind the reference time point.

2. The determination method of claim 1, wherein the UE obtaining the indication information comprises:

3. The method of claim 2, wherein the determining, by the UE, the reference time point according to the acquired time when the indication information includes the indication information sent by the base station, comprises:

4. The method of claim 2, wherein the determining, by the UE, the reference time point according to the acquired time when the indication information includes the indication information sent by the base station, comprises:

5. The determination method of claim 1, wherein the UE obtaining the indication information comprises:

6. The determination method of claim 1, wherein the UE obtaining the indication information comprises:

7. The determination method according to claim 5 or 6, characterized in that the time unit indicated by the base station comprises at least one of the following information:

8. The determination method according to any one of claims 1 to 6, characterized in that the indication information comprises at least one of the following information:

a preamble signal;

9. The determination method according to any of claims 1 to 6, wherein the UE determines a reference resource according to the reference time point, comprising:

10. The determination method according to any of claims 1 to 6, wherein the UE determines a reference resource according to the reference time point, comprising:

11. The method of claim 10, wherein the UE selects, according to the reference time point, a time domain resource corresponding to a time unit whose distance from the reference time point is smaller than a set first threshold as the reference resource, including:

12. The method of claim 1, 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 comprises:

13. The determination method according to claim 12, wherein the setting condition includes at least one of the following conditions:

14. The method of any one of claims 1 to 6, 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:

15. The method for determining according to claim 14, wherein the UE determines the channel state information of the channel corresponding to the first unlicensed spectrum resource by measuring the reference resource, and includes:

16. The determination method of claim 15, wherein the UE making measurements of the determined time domain resources and/or the frequency domain resources comprises:

and/or the presence of a gas in the gas,

17. The method of any one of claims 1 to 6, 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:

18. The method for determining according to claim 17, wherein the channel state information of the channel corresponding to the UE-configured unlicensed spectrum resource includes:

19. The determination method of claim 18, wherein the specific signaling comprises at least one of the following signaling forms:

20. A method for determining channel state information, comprising:

the base station receives channel state information sent by the UE, wherein the channel state information comprises channel state information of a channel corresponding to the first unlicensed spectrum resource, and the channel state information is determined by the UE according to a reference time point determined by the received indication information, a reference resource determined according to the reference time point and the reference resource; the reference time point is used for representing the moment when the base station transmits data on the first unlicensed spectrum resource after preempting the opportunity of using the first unlicensed spectrum resource;

before the base station sends the indication information to the UE, the method further includes: and the base station sends resource information for reporting the channel state information to the UE, wherein the resource information comprises time domain resources.

21. The method of claim 20, wherein the base station sends indication information to the UE, comprising:

22. The method of claim 20, wherein the base station sends indication information to the UE, comprising:

23. The method of claim 20, wherein the base station sends indication information to the UE, comprising:

24. The method of determining according to claim 22 or 23, wherein the time unit indicated by the base station comprises at least one of the following information:

25. The determination method according to any of claims 20 to 23, wherein the indication information comprises at least one of the following information:

a preamble signal;

26. The determination method according to any one of claims 20 to 23, characterized in that the method further comprises:

27. The determination method of claim 26, wherein the specific signaling comprises at least one of the following signaling forms:

28. A channel state information determining apparatus, comprising:

the determining unit is used for determining a reference time point according to the indicating information acquired by the acquiring unit; determining reference resources according to the reference time point, wherein the reference resources are used for determining a channel state of a channel corresponding to the first license-free spectrum resource which is preempted by the base station; the reference time point is used for representing the moment when the base station transmits data on the first unlicensed spectrum resource after preempting the opportunity of using the first unlicensed spectrum resource;

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

the acquiring unit is further configured to receive resource information, which is sent by a base station and used for reporting channel state information, wherein the resource information includes time domain resources; the determining unit is specifically configured to determine the reference resource according to the time domain resource included in the resource information received by the obtaining unit 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.

29. The determination device of claim 28,

the obtaining unit is specifically configured to receive indication information sent by a base station through the first unlicensed spectrum resource, where the indication information includes a time when the base station sends the indication information;

30. The apparatus according to claim 29, wherein the determining unit determines the reference time point according to the time when the indication information acquired by the acquiring unit includes the indication information sent by the base station, and includes:

31. The apparatus according to claim 29, wherein the determining unit determines the reference time point according to the time when the indication information acquired by the acquiring unit includes the indication information sent by the base station, and includes:

32. The determination device of claim 28,

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

33. The determination device of claim 28,

the obtaining unit is specifically configured to receive control information sent by a base station through the first unlicensed spectrum resource, where the control information includes indication information sent by the base station;

34. The determination device according to claim 32 or 33, wherein the base station indicated time unit comprises at least one of the following information:

35. The determination device according to any of claims 28 to 33, wherein the indication information comprises at least one of the following information:

a preamble signal;

36. The determination device according to any one of claims 28 to 33,

the determining unit is specifically configured to use, according to the reference time point, a time domain resource corresponding to a time unit including the reference time point as a reference resource.

37. The determination device according to any one of claims 28 to 33,

the determining unit is specifically configured to select, according to the reference time point, a time domain resource corresponding to a time unit in which a distance between the time domain resource and the reference time point is smaller than a set first threshold as a reference resource.

38. The apparatus of claim 37, wherein the determining unit selects, as the reference resource, a time domain resource corresponding to a time unit for which a distance between the reference time points is smaller than a set first threshold value, according to the reference time point, includes:

39. The apparatus for determining according to claim 28, wherein the determining unit determines the reference resource according to the time domain resource included in the resource information received by the obtaining unit and the time domain resource corresponding to the reference time point, and includes:

40. The determination device according to claim 39, wherein the setting condition includes at least one of the following conditions:

41. The determination device according to any one of claims 28 to 33,

the sending unit 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 set third threshold, determine, by measuring the reference resource, channel state information of a channel corresponding to the first unlicensed spectrum resource.

42. The apparatus for determining of claim 41, wherein the sending unit determines the channel state information of the channel corresponding to the first unlicensed spectrum resource by measuring the reference resource, and comprises:

43. The determination device of claim 42, wherein the sending unit to measure the determined time domain resources and/or the frequency domain resources comprises:

and/or the presence of a gas in the gas,

44. The determination device according to any one of claims 28 to 33,

the sending unit 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 set third threshold, use channel state information of a channel corresponding to the configured unlicensed spectrum resource as channel state information of a channel corresponding to the first unlicensed spectrum resource.

45. The determination device of claim 44,

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

46. The determination device of claim 45, wherein the specific signaling comprises at least one of the following signaling forms:

47. A channel state information determining apparatus, comprising:

a sending unit, configured to send indication information to a user equipment UE, where the indication information is used to indicate that a base station has preempted a 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 a channel corresponding to the first unlicensed spectrum resource, and the channel state information is determined by the UE according to a reference time point determined by the received indication information, and is determined by the UE according to the reference time point and the reference resource; the reference time point is used for representing the moment when the base station transmits data on the first unlicensed spectrum resource after preempting the opportunity of using the first unlicensed spectrum resource;

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

48. The determination device of claim 47,

the sending unit is specifically configured to send, to the UE, indication information through the first unlicensed spectrum resource, where the indication information includes a time when the base station sends the indication information.

49. The determination device of claim 47,

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

50. The determination device of claim 47,

the sending unit is specifically configured to send control information to the UE through the first unlicensed spectrum resource, where the control information includes indication information sent by the base station, and the indication information includes a time unit indicated by the base station.

51. The determination device according to claim 49 or 50, wherein the base station indicated time unit comprises at least one of the following information:

52. The determination device according to any of claims 47 to 50, wherein the indication information comprises at least one of the following information:

a preamble signal;

53. The determination device of any one of claims 47 to 50,

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

54. The determination device of claim 53, wherein the specific signaling comprises at least one of the following signaling forms:

55. A channel state information determining apparatus, comprising:

the processor is used for determining a reference time point according to the acquired indication information; determining reference resources according to the reference time point, wherein the reference resources are used for determining a channel state of a channel corresponding to the first license-free spectrum resource which is preempted by the base station; determining channel state information of a channel corresponding to the first unlicensed spectrum resource according to the reference resource; the reference time point is used for representing the moment when the base station transmits data on the first unlicensed spectrum resource after preempting the opportunity of using the first unlicensed spectrum resource;

a signal transmitter for transmitting the determined channel state information to the base station;

the signal receiver is further configured to receive resource information, which is sent by the base station and used for reporting channel state information, where the resource information includes time domain resources; the processor determines a reference resource according to the reference time point, and specifically includes: and determining a reference resource according to the time domain resource contained in the resource information and the time domain resource corresponding to the reference time point, wherein the time point corresponding to the time domain resource contained in the reference resource lags behind the reference time point.

56. The determination device of claim 55,

the signal receiver is specifically configured to receive indication information sent by the base station through the first unlicensed spectrum resource, where the indication information includes a time when the base station sends the indication information;

57. The apparatus of claim 56, wherein the processor determines the reference time point according to the acquired time when the indication information includes the indication information sent by the base station, and the determining includes:

58. The apparatus of claim 56, wherein the processor determines the reference time point according to the acquired time when the indication information includes the indication information sent by the base station, and the determining includes:

59. The determination device of claim 55,

the signal receiver is specifically configured to receive a cross-carrier signaling sent by the base station through a licensed spectrum resource and/or a preempted second unlicensed spectrum resource, where the cross-carrier signaling includes indication information sent by the base station;

60. The determination device of claim 55,

the signal receiver is specifically configured to receive control information sent by the base station through the first unlicensed spectrum resource, where the control information includes indication information sent by the base station;

61. The determination device of claim 59 or 60, wherein the base station indicated time unit comprises at least one of the following information:

62. The determination device according to any of claims 55 to 60, wherein the indication information comprises at least one of the following information:

a preamble signal;

63. The determination device according to any of claims 55 to 60, wherein the processor determines a reference resource based on the reference time point, comprising:

64. The determination device according to any of claims 55 to 60, wherein the processor determines a reference resource based on the reference time point, comprising:

65. The apparatus of claim 64, wherein the processor selects, as the reference resource, the time domain resource corresponding to a time unit for which a distance between the reference time points is less than a set first threshold according to the reference time points, comprising:

66. The apparatus of claim 55, wherein the processor determines the reference resource according to the time domain resource contained in the resource information and the time domain resource corresponding to the reference time point, and comprises:

67. The determination device of claim 66, wherein the set condition comprises at least one of:

68. The apparatus of any one of claims 55 to 60, wherein the processor determines channel state information of a channel corresponding to the first unlicensed spectrum resource based on the reference resource, comprising:

69. The apparatus of claim 68, wherein the processor determines the channel state information for the channel corresponding to the first unlicensed spectrum resource by measuring the reference resource, comprising:

70. The determination device of claim 69, wherein the processor measures the determined time domain resources and/or the frequency domain resources, comprising:

and/or the presence of a gas in the gas,

71. The apparatus of any one of claims 55 to 60, wherein the processor determines channel state information of a channel corresponding to the first unlicensed spectrum resource based on the reference resource, comprising:

72. The apparatus for determining channel state information for a channel corresponding to the processor-configured unlicensed spectrum resource as recited in claim 71, comprising:

73. The determination device of claim 72, wherein the specific signaling comprises at least one of the following signaling forms:

74. A channel state information determining apparatus, comprising:

the signal transmitter is used for transmitting indication information to User Equipment (UE), wherein the indication information is used for indicating that a base station has preempted a first unlicensed spectrum resource;

the signal receiver is configured to receive channel state information sent by the UE, where the channel state information includes channel state information of a channel corresponding to the first unlicensed spectrum resource, and the channel state information is determined by the UE according to a reference time point determined by the received indication information, and is determined by the UE according to the reference time point and the reference resource; the reference time point is used for representing the moment when the base station transmits data on the first unlicensed spectrum resource after preempting the opportunity of using the first unlicensed spectrum resource;

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

75. The determination device of claim 74,

the signal transmitter is specifically configured to send, to the UE, indication information through the first unlicensed spectrum resource, where the indication information includes a time when the base station sends the indication information.

76. The determination device of claim 74,

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

77. The determination device of claim 74,

the signal transmitter is specifically configured to send control information to the UE through the first unlicensed spectrum resource, where the control information includes indication information sent by the base station, and the indication information includes a time unit indicated by the base station.

78. The determination device of claim 76 or 77, wherein the base station indicated time unit comprises at least one of the following information:

79. The determination device of any one of claims 74 to 77, wherein the indication information comprises at least one of:

a preamble signal;

80. The determination device of any one of claims 74 to 77,

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

81. The determination device of claim 80, wherein the specific signaling comprises at least one of the following signaling forms: