CN108400807B

CN108400807B - Method for obtaining channel characteristics, user equipment and base station

Info

Publication number: CN108400807B
Application number: CN201810129406.8A
Authority: CN
Inventors: 孙静原; 周永行; 薛丽霞; 大卫·马瑞泽
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-01-18
Filing date: 2013-01-18
Publication date: 2023-06-02
Anticipated expiration: 2033-01-18
Also published as: CN104081683A; WO2014110808A1; CN108400807A; CN104081683B

Abstract

The invention relates to a method for obtaining channel characteristics, which comprises the following steps: the method comprises the steps that User Equipment (UE) obtains quasi co-station configuration information, wherein the quasi co-station configuration information is used for indicating that at least one channel characteristic in a first antenna port and a second antenna port is quasi co-station, and the first antenna port and the second antenna port respectively correspond to different carriers; the UE determines that at least one channel characteristic in the first antenna port and the second antenna port is quasi-co-sited according to the quasi-co-sited configuration information; the UE acquires the at least one channel characteristic quasi-co-sited with the first antenna port in the second antenna port from the signals received by the first antenna port or the first antenna port and the second antenna port, and solves the problems that the channel characteristic of the antenna port cannot be determined through quasi-co-sited configuration and the quasi-co-sited configuration is inflexible when certain cells of certain carriers have no certain reference signals.

Description

Method for obtaining channel characteristics, user equipment and base station

Technical Field

The present invention relates to communications technologies, and in particular, to a method for obtaining channel characteristics, a user equipment, and a base station.

Background

In a long term evolution (Long Term Evolution, LTE) system, the large-scale characteristics of a channel transmitting a signal on one antenna port can be inferred from a channel transmitting a signal on another antenna port, and then the two antenna ports are called Quasi Co-station (QCL). The large scale characteristics of the channel include: one or more of Delay Spread (Delay Spread), doppler Spread (Doppler Shift), doppler Shift (Doppler Shift), average Gain (Average Gain), and Average Delay (Average Delay).

For example, a User Equipment (UE) may determine, according to quasi co-station configuration information sent by a base station, that a demodulation reference signal (Demodulation Reference Signal, DM RS) antenna port and an antenna port of one CSI-RS configured by the same cell higher layer signaling are quasi co-sited. For another example, the UE may further determine, according to configuration information sent by the base station, that an antenna port of a CSI-RS configured by the higher layer signaling is quasi-co-sited with an antenna port of a CRS configured by the higher layer signaling of the same cell.

Because the antenna ports of the quasi co-station configured by the base station are all on the same carrier, the UE can only obtain the channel large-scale characteristics of the DM RS or the CSI-RS according to the channel characteristics corresponding to the antenna ports on the same carrier. Therefore, for the case that there is no CRS or no CSI-RS in the cell on the carrier, the antenna port of the cell on the carrier cannot realize quasi co-station, and if the quasi co-station can only be performed on the same carrier, the gain of the quasi co-station is also greatly limited.

Disclosure of Invention

In view of the above, embodiments of the present invention provide a method, a user equipment and a base station for obtaining channel characteristics, so as to solve the problem that antenna ports of cells on the same carrier cannot achieve quasi co-station when no CRS or no CSI-RS exists in the cells on the same carrier.

In a first aspect, an embodiment of the present invention provides a method for acquiring channel characteristics, including:

the method comprises the steps that User Equipment (UE) obtains quasi co-station configuration information, wherein the quasi co-station configuration information is used for indicating that at least one channel characteristic in a first antenna port and a second antenna port is quasi co-station, and the first antenna port and the second antenna port respectively correspond to different carriers;

the UE determines that at least one channel characteristic in the first antenna port and the second antenna port is quasi-co-sited according to the quasi-co-sited configuration information;

the UE obtains the at least one channel characteristic quasi co-sited with the first antenna port in the second antenna port from signals received on the first antenna port or the first antenna port and the second antenna port.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the obtaining, by the UE, quasi co-sited configuration information includes:

The UE acquires the quasi co-station configuration information according to self predefining; or alternatively

And the UE acquires the quasi co-station configuration information according to the explicit notification of the base station or the implicit notification of 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 obtaining, by the UE, the quasi co-sited configuration information according to an explicit notification of a base station or an implicit notification of the base station includes:

and the UE acquires the quasi co-station configuration information according to at least one signaling of the received semi-static signaling and dynamic signaling.

With reference to the first aspect and the first and second possible implementation manners of the first aspect, in a third possible implementation manner of the first aspect, before the acquiring the at least one channel characteristic quasi-co-sited with the first antenna port in the second antenna port, the method further includes:

the UE receives deviation configuration information explicitly notified by a base station or implicitly notified by the base station, wherein the deviation configuration information comprises a deviation value of at least one channel characteristic in the first antenna port and the second antenna port, and the deviation configuration information is used for indicating that the at least one channel characteristic of the first antenna port and the second antenna port is quasi-co-sited after being adjusted according to the deviation value;

The UE determining that at least one channel characteristic of the first antenna port and the second antenna port is quasi-co-sited according to the quasi-co-sited configuration information, including:

and the UE determines that at least one channel characteristic in the first antenna port and the second antenna port is quasi-co-sited according to the quasi-co-sited configuration information and the deviation configuration information.

With reference to the first and second possible implementation manners of the first aspect, in a fourth possible implementation manner of the first aspect, the quasi co-station configuration information acquired by the UE further includes carrier information of the first antenna port.

With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the carrier information may be at least one of cell identification information and carrier identification information.

With reference to the fourth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, when the first antenna port is an antenna port for transmitting a cell-specific reference signal CRS and the second antenna port is an antenna port for transmitting channel state information-reference signal CSI-RS, the acquiring quasi co-station configuration information by the UE includes:

The UE receives configuration information of the CSI-RS, wherein the configuration information of the CSI-RS comprises quasi co-station configuration information, and the quasi co-station configuration information comprises carrier information of the CRS;

and the UE acquires the quasi co-station configuration information from the configuration information of the CSI-RS.

With reference to the first aspect and the first to fifth possible implementation manners thereof, in a seventh possible implementation manner of the first aspect, the channel characteristics include at least one of: time domain channel characteristics, frequency domain channel characteristics, power domain channel characteristics.

With reference to the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, the channel characteristics include at least one of: delay spread, doppler shift, average gain, average received power, average delay, received time, received frequency, reference signal received power RSRP.

With reference to the first aspect and the first to eighth possible implementation manners of the first aspect, in a ninth possible implementation manner of the first aspect, the first antenna port and the second antenna port are antenna ports for transmitting any one of a channel state information-reference signal CSI-RS, a cell specific reference signal CRS, a demodulation reference signal DM RS, a primary synchronization signal PSS, a secondary synchronization signal SSS, a discovery signal Di scovery Signal, a positioning reference signal PRS, and a UE specific reference signal UE-specific RS.

With reference to the first aspect and the first to ninth possible implementation manners of the first aspect, in a tenth possible implementation manner of the first aspect, after the acquiring, by the UE, quasi co-station configuration information, the method further includes:

the UE reports a first RSRP value; wherein the first RSRP value is measured by the UE on at least one of the first antenna port and the second antenna port.

With reference to the third possible implementation manner of the first aspect, in an eleventh possible implementation manner of the first aspect, the offset configuration information received by the UE is used to indicate that the first antenna port and the second antenna port are quasi-co-sited with respect to average gain after being adjusted according to a power offset value;

after receiving the offset configuration information explicitly notified by the base station or implicitly notified by the base station, the UE further includes:

and the UE reports a second RSRP value, wherein the second RSRP value is obtained by the UE according to the measurement result of at least one antenna port in the first antenna port and the second antenna port and the power deviation value.

With reference to the third possible implementation manner of the first aspect, in a twelfth possible implementation manner of the first aspect, when the offset configuration information is used to indicate that the first antenna port and the second antenna port are quasi co-sited with respect to doppler spread and doppler bias after being adjusted according to a frequency offset value, after the UE receives the offset configuration information explicitly notified or implicitly notified by the base station, the UE further includes:

The UE acquires receiving frequency and deviation configuration information of the first antenna port, wherein the deviation configuration information comprises the frequency deviation value, and the frequency deviation value is a center frequency deviation value between a carrier corresponding to the first antenna port and a carrier corresponding to the second antenna port;

and the UE obtains the receiving frequency of the second antenna port according to the receiving frequency of the first antenna port and the central frequency deviation value.

With reference to the twelfth possible implementation manner of the first aspect, in a thirteenth possible implementation manner of the first aspect, the method further includes:

the UE measures the frequency error of the first antenna port according to the signal received by the first antenna port;

the UE obtaining the receiving frequency of the second antenna port according to the receiving frequency of the first antenna port and the center frequency offset value, including:

and the UE obtains the receiving frequency of the second antenna port according to the central frequency deviation value, the receiving frequency of the first antenna port and the frequency error.

With reference to the third to ninth possible implementation manners of the first aspect, in a fourteenth possible implementation manner of the first aspect, when the offset configuration information is used to indicate that the first antenna port and the second antenna port are quasi co-sited with respect to average delay after being adjusted according to a time offset value, after the UE receives the offset configuration information explicitly notified by the base station or implicitly notified by the base station, the UE further includes:

And the UE obtains the receiving time of the second antenna port according to the receiving time of the first antenna port and the time deviation value.

In a second aspect, an embodiment of the present invention provides a method for acquiring channel characteristics, including:

the base station configures quasi-co-station for User Equipment (UE), wherein the quasi-co-station comprises a first antenna port and a second antenna port, at least one channel characteristic of which is quasi-co-station, and the first antenna port and the second antenna port respectively correspond to different carriers;

the base station sends quasi co-station configuration information to the UE so that the UE determines that at least one channel characteristic in the first antenna port and the second antenna port is quasi co-station according to the quasi co-station configuration information, and obtains the at least one channel characteristic quasi co-station with the first antenna port in the second antenna port from signals received on the first antenna port or the first antenna port and the second antenna port.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the sending, by the base station, quasi co-sited configuration information to the UE includes:

the base station sends quasi co-station configuration information to the UE through explicit notification or implicit notification.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the sending, by the base station, quasi co-sited configuration information to the UE through explicit notification or implicit notification includes:

and the base station sends quasi co-station configuration information to the UE through at least one signaling of semi-static signaling and dynamic signaling.

With reference to the second aspect and the first and second possible implementation manners of the second aspect, in a third possible implementation manner of the second aspect, before the base station sends quasi co-sited configuration information to the UE, the method further includes:

the base station sends deviation configuration information to the UE through explicit notification or implicit notification, wherein the deviation configuration information comprises a deviation value of at least one channel characteristic in the first antenna port and the second antenna port, and the deviation configuration information is used for indicating that the at least one channel characteristic of the first antenna port and the second antenna port is quasi-co-sited after being adjusted according to the deviation value.

With reference to the second aspect and the first and second possible implementation manners of the second aspect, in a fourth possible implementation manner of the second aspect, the quasi co-sited configuration information sent by the base station to the UE further includes carrier information of the first antenna port.

With reference to the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the carrier information is at least one of cell identification information and carrier identification information.

With reference to the fourth possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, when the first antenna port is an antenna port for transmitting a cell-specific reference signal CRS and the second antenna port is an antenna port for transmitting channel state information-reference signal CSI-RS, the sending, by the base station, quasi co-station configuration information to the UE includes:

the base station sends configuration information of the CSI-RS to the UE, wherein the configuration information of the CSI-RS comprises the quasi co-station configuration information, and the quasi co-station configuration information comprises carrier information of the CRS, so that the UE obtains the quasi co-station configuration information from the configuration information of the CSI-RS.

With reference to the second aspect and the first to sixth possible implementation manners of the second aspect, in a seventh possible implementation manner of the second aspect, the channel characteristics include at least one of: time domain channel characteristics, frequency domain channel characteristics, power domain channel characteristics.

With reference to the second aspect and the first to sixth possible implementation manners thereof, in an eighth possible implementation manner of the second aspect, the channel characteristics include at least one of the following: delay spread, doppler shift, average gain, average received power, average delay, received time, received frequency, reference signal received power RSRP.

With reference to the second aspect and the first to eighth possible implementation manners of the second aspect, in a ninth possible implementation manner of the second aspect, the first antenna port and the second antenna port are antenna ports for transmitting any one of a channel state information-reference signal CSI-RS, a cell-specific reference signal CRS, a demodulation reference signal DM RS, a primary synchronization signal PSS, a secondary synchronization signal SSS, a discovery signal Di scovery Signal, a positioning reference signal PRS, and a UE-specific reference signal UE-specific RS.

With reference to the second aspect and the first to ninth possible implementation manners of the second aspect, in a tenth possible implementation manner of the second aspect, after the base station sends quasi co-sited configuration information to the UE, the method further includes:

the base station receives a first RSRP value reported by the UE; wherein the first RSRP value is measured by the UE on at least one of the first antenna port and the second antenna port.

With reference to the second aspect and the third to ninth possible implementation manners of the second aspect, in an eleventh possible implementation manner of the second aspect, the offset configuration information sent by the base station to the UE is used to indicate that the first antenna port and the second antenna port are quasi co-sited with respect to average gain after being adjusted according to a power offset value;

after the base station sends the offset configuration information to the UE through explicit notification or implicit notification, the method further includes:

and the base station receives a second RSRP value reported by the UE, wherein the second RSRP value is obtained by the UE according to a measurement result of at least one antenna port in the first antenna port and the second antenna port and the power deviation value.

In a third aspect, an embodiment of the present invention provides a user equipment for acquiring channel characteristics, including:

the system comprises a quasi co-station information acquisition module, a quasi co-station information acquisition module and a control module, wherein the quasi co-station information acquisition module is used for acquiring quasi co-station configuration information, and the quasi co-station configuration information is used for indicating that at least one channel characteristic in a first antenna port and a second antenna port is quasi co-station, wherein the first antenna port and the second antenna port respectively correspond to different carriers;

the quasi co-station determining module is used for determining that at least one channel characteristic in the first antenna port and the second antenna port is quasi co-station according to the quasi co-station configuration information acquired by the quasi co-station information acquiring module;

And the channel characteristic acquisition module is used for acquiring the at least one channel characteristic quasi-co-sited with the first antenna port in the second antenna port from the first antenna port or the signals received by the first antenna port and the second antenna port according to the quasi-co-sited determined by the quasi-co-sited determination module.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the quasi co-station information acquisition module includes any one of the following sub-modules:

a first configuration acquisition sub-module, configured to acquire the quasi co-sited configuration information according to the predefined definition of the user equipment;

and the second configuration acquisition sub-module is used for acquiring the quasi co-station configuration information according to the explicit notification of the base station or the implicit notification of 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 second configuration obtaining sub-module includes:

and the third configuration acquisition sub-module is used for obtaining the quasi co-station configuration information by receiving at least one signaling of the semi-static signaling and the dynamic signaling.

With reference to the third aspect and the first and second possible implementation manners of the third aspect, in a third possible implementation manner of the third aspect, the user equipment further includes:

The deviation information receiving module is used for receiving deviation configuration information before the channel characteristic obtaining module obtains the channel characteristic of the second antenna port, and the deviation configuration information is used for indicating that at least one channel characteristic of the first antenna port and the second antenna port is quasi-co-sited after being adjusted according to the deviation value;

the quasi co-station determining module includes:

and the quasi co-station sub-module is used for determining that at least one channel characteristic in the first antenna port and the second antenna port is quasi co-station according to the quasi co-station configuration information and the deviation configuration information received by the deviation information receiving module.

With reference to the third aspect and the first and second possible implementation manners of the third aspect, in a fourth possible implementation manner of the third aspect, the quasi co-sited information obtaining module includes:

and the carrier acquisition sub-module is used for acquiring the carrier information of the first antenna port.

With reference to the fourth possible implementation manner of the third aspect, in a fifth possible implementation manner of the third aspect, the carrier information acquired by the carrier acquisition submodule is at least one of cell identification information and carrier identification information.

With reference to the fourth possible implementation manner of the third aspect, in a sixth possible implementation manner of the third aspect, the quasi co-sited information obtaining module includes:

an information receiving sub-module, configured to receive configuration information of a CSI-RS when the first antenna port is an antenna port for transmitting a cell-specific reference signal CRS and the second antenna port is an antenna port for transmitting channel state information-reference signal CSI-RS, where the configuration information of the CSI-RS includes the quasi co-sited configuration information, and the quasi co-sited configuration information includes carrier information of the CRS;

and the information acquisition sub-module is used for acquiring the quasi co-station configuration information from the configuration information of the CSI-RS received by the information receiving sub-module.

With reference to the third aspect and the first to fifth possible implementation manners of the third aspect, in a seventh possible implementation manner of the third aspect, the channel characteristics include at least one of the following in the quasi co-sited configuration information acquired by the quasi co-sited information acquisition module: time domain channel characteristics, frequency domain channel characteristics, power domain channel characteristics.

With reference to the third aspect and the first to fifth possible implementation manners of the third aspect, in an eighth possible implementation manner of the third aspect, the channel characteristics include at least one of the following in the quasi co-sited configuration information acquired by the quasi co-sited information acquisition module: delay spread, doppler shift, average gain, average received power, average delay, received time, received frequency, reference signal received power RSRP.

With reference to the third aspect and the first to eighth possible implementation manners of the third aspect, in a ninth possible implementation manner of the third aspect, in the quasi co-station configuration information acquired by the quasi co-station information acquiring module, the first antenna port and the second antenna port are antenna ports for transmitting any one of a channel state information-reference Signal CSI-RS, a cell-specific reference Signal CRS, a demodulation reference Signal DM RS, a primary synchronization Signal PSS, a secondary synchronization Signal SSS, a Discovery Signal, a positioning reference Signal PRS, and a UE-specific reference Signal UE-specific RS.

With reference to the third aspect and the first to ninth possible implementation manners of the third aspect, in a tenth possible implementation manner of the third aspect, the user equipment further includes:

the first measurement module is used for measuring and obtaining a first RSRP value on at least one antenna port in the first antenna port and the second antenna port after the quasi co-station information acquisition module acquires the quasi co-station configuration information;

and the first reporting module is used for reporting the first RSRP value measured by the first measuring module.

With reference to the third possible implementation manner of the third aspect, in an eleventh possible implementation manner of the third aspect, the offset configuration information received by the offset information receiving module is used to indicate that the first antenna port and the second antenna port are quasi-co-sited with respect to average gain after being adjusted according to a power offset value;

The user equipment further comprises:

the second measurement module is used for obtaining a second RSRP value according to the measurement result of at least one antenna port in the first antenna port and the second antenna port and the power deviation value after the deviation information receiving module receives the deviation configuration information;

and the second reporting module is used for reporting the second RSRP value obtained by the second measuring module.

With reference to the third possible implementation manner of the third aspect, in a twelfth possible implementation manner of the third aspect, the offset configuration information received by the offset information receiving module is used to indicate that the first antenna port and the second antenna port are quasi-co-sited with respect to doppler spread and doppler shift after being adjusted according to a frequency offset value;

the user equipment further comprises:

the first receiving frequency obtaining module is used for obtaining the receiving frequency and deviation configuration information of the first antenna port after the deviation information receiving module receives the deviation configuration information, wherein the deviation configuration information comprises the frequency deviation value, and the frequency deviation value is a center frequency deviation value between a carrier corresponding to the first antenna port and a carrier corresponding to the second antenna port;

And the second receiving frequency obtaining module is used for obtaining the receiving frequency of the second antenna port according to the receiving frequency of the first antenna port and the central frequency deviation value obtained by the first receiving frequency obtaining module.

With reference to the twelfth possible implementation manner of the third aspect, in a thirteenth possible implementation manner of the third aspect, the user equipment further includes:

the frequency error measuring module is used for measuring the frequency error of the first antenna port according to the signal received by the first antenna port;

the second receiving frequency obtaining module is configured to obtain the receiving frequency of the second antenna port according to the center frequency deviation value, the frequency error of the first antenna port measured by the frequency error measuring module, and the receiving frequency.

With reference to the third to the ninth possible implementation manners of the third aspect, in a fourteenth possible implementation manner of the third aspect, the user equipment further includes:

and the receiving time obtaining module is used for obtaining the receiving time of the second antenna port according to the receiving time of the first antenna port and the time deviation value when the deviation configuration information received by the deviation information receiving module is used for indicating that the first antenna port and the second antenna port are quasi co-sited with respect to average time delay after being adjusted according to the time deviation value.

In a fourth aspect, an embodiment of the present invention provides a base station, including:

a configuration module, configured to configure quasi co-station for user equipment UE, where the quasi co-station includes a first antenna port and a second antenna port, where at least one channel characteristic of the first antenna port and the second antenna port are quasi co-station, and the first antenna port and the second antenna port respectively correspond to different carriers;

and the configuration information sending module is used for sending quasi co-station configuration information configured by the configuration module to the UE, so that the UE determines that at least one channel characteristic in the first antenna port and the second antenna port is quasi co-station according to the quasi co-station configuration information, and obtains the at least one channel characteristic quasi co-station with the first antenna port in the second antenna port from the signals received by the first antenna port or the first antenna port and the second antenna port.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the configuration information sending module includes:

and the first configuration sending submodule is used for sending quasi co-station configuration information to the UE through explicit notification or implicit notification.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the first configuration sending submodule includes:

And the second configuration sending submodule is used for sending quasi co-station configuration information to the UE through at least one signaling of semi-static signaling and dynamic signaling.

With reference to the fourth aspect and the first and second possible implementation manners of the fourth aspect, in a third possible implementation manner of the fourth aspect, the base station further includes: and the deviation information sending module is used for sending deviation configuration information to the UE through explicit notification or implicit notification, the deviation configuration information comprises a deviation value of at least one channel characteristic of the first antenna port and the second antenna port, and the deviation configuration information is used for indicating that the at least one channel characteristic of the first antenna port and the second antenna port is quasi-co-sited after being adjusted according to the deviation value.

With reference to the fourth aspect and the first and second possible implementation manners of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the configuration information sending module further includes:

and the first carrier wave transmitting sub-module is used for transmitting the carrier wave information of the first antenna port.

With reference to the fourth possible implementation manner of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the carrier information sent by the first carrier sending submodule is at least one of cell identification information and carrier identification information.

With reference to the fourth possible implementation manner of the fourth aspect, in a sixth possible implementation manner of the fourth aspect, the configuration information sending module includes:

and the second carrier wave transmitting sub-module is used for transmitting configuration information of the CSI-RS to the UE when the first antenna port is an antenna port for transmitting a cell-specific reference signal CRS and the second antenna port is an antenna port for transmitting channel state information-reference signal CSI-RS, wherein the configuration information of the CSI-RS comprises quasi co-station configuration information, and the quasi co-station configuration information comprises carrier wave information of the CRS.

With reference to the fourth aspect and the first to sixth possible implementation manners of the fourth aspect, in a seventh possible implementation manner of the fourth aspect, the channel characteristics sent by the configuration information sending module include at least one of the following: time domain channel characteristics, frequency domain channel characteristics, power domain channel characteristics.

With reference to the seventh possible implementation manner of the fourth aspect, in an eighth possible implementation manner of the fourth aspect, in the quasi co-sited configuration information sent by the configuration information sending module, the channel characteristics include at least one of the following: delay spread, doppler shift, average gain, average received power, average delay, received time, received frequency, reference signal received power RSRP.

With reference to the fourth aspect and the first to eighth possible implementation manners of the fourth aspect, in a ninth possible implementation manner of the fourth aspect, in the quasi co-station configuration information sent by the configuration information sending module, the first antenna port and the second antenna port are antenna ports for transmitting any one of a channel state information-reference Signal CSI-RS, a cell specific reference Signal CRS, a demodulation reference Signal DM RS, a primary synchronization Signal PSS, a secondary synchronization Signal SSS, a Discovery Signal, a positioning reference Signal PRS, and a UE specific reference Signal UE-specific RS.

With reference to the fourth aspect and the first to eighth possible implementation manners of the fourth aspect, in a tenth possible implementation manner of the fourth aspect, the base station further includes: the first receiving module is used for receiving a first RSRP value reported by the UE after the configuration information sending module sends quasi co-station configuration information to the UE; wherein the first RSRP value is measured by the UE on at least one of the first antenna port and the second antenna port.

With reference to the fourth aspect and the third to eighth possible implementation manners of the fourth aspect, in an eleventh possible implementation manner of the fourth aspect, the base station further includes: and the second receiving module is used for receiving a second RSRP value reported by the UE after the deviation information sending module sends the deviation configuration information to the UE when the deviation configuration information sent by the deviation information sending module is used for indicating that the average gain is quasi co-station after the first antenna port and the second antenna port are adjusted according to the power deviation value, and the second RSRP value is obtained by the UE according to the measurement result of at least one antenna port in the first antenna port and the second antenna port and the power deviation value.

In a fifth aspect, an embodiment of the present invention provides a user equipment, including: the system comprises a memory and a processor connected with the memory, wherein a group of program codes are stored in the memory, and the processor is used for calling the program codes stored in the memory and executing the method for acquiring the channel characteristics, and the method comprises the following steps: acquiring quasi co-station configuration information, wherein the quasi co-station configuration information is used for indicating that at least one channel characteristic in a first antenna port and a second antenna port is quasi co-station; wherein the first antenna port and the second antenna port correspond to different carriers respectively; determining that at least one channel characteristic in the first antenna port and the second antenna port is quasi-co-sited according to the quasi-co-sited configuration information; and acquiring the at least one channel characteristic quasi co-sited with the first antenna port in the second antenna port from the signals received on the first antenna port or the first antenna port and the second antenna port.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the user equipment further includes a receiver, where the receiver is configured to use the quasi co-sited configuration information explicitly notified by the base station or implicitly notified 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 receiver is further configured to receive offset configuration information of an explicit notification or an implicit notification of the base station.

With reference to the fifth aspect and the first and second possible implementation manners of the fifth aspect, in a third possible implementation manner of the fifth aspect, the user equipment further includes a transmitter, where the transmitter is configured to report a first RSRP value; wherein the first RSRP value is invoked by the processor to execute: measured at least one of the first antenna port and the second antenna port.

With reference to the fifth aspect and the first and second possible implementation manners of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, the user equipment further includes a transmitter, where the transmitter is configured to report a second RSRP value, where the second RSRP value is used by the processor to call the program code stored in the memory, and perform: and obtaining according to the measurement result of at least one antenna port of the first antenna port and the second antenna port and the power deviation value.

In a sixth aspect, an embodiment of the present invention provides a base station, including: the system comprises a transmitter, a memory and a processor connected with the memory, wherein the memory stores a group of program codes, the processor is used for calling the program codes stored in the memory, and in the method for acquiring the channel characteristics, quasi co-station is configured for User Equipment (UE), the quasi co-station comprises a first antenna port and a second antenna port, at least one channel characteristic of the first antenna port and the second antenna port is quasi co-station, and the first antenna port and the second antenna port respectively correspond to different carriers; the transmitter is configured to send quasi co-station configuration information to the UE, so that the UE determines that at least one channel characteristic in the first antenna port and the second antenna port is quasi co-station according to the quasi co-station configuration information, and obtains the at least one channel characteristic quasi co-station with the first antenna port in the second antenna port from a signal received on the first antenna port or the first antenna port and the second antenna port.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the transmitter is further configured to send quasi co-sited configuration information to the UE through an explicit notification or an implicit notification.

With reference to the first possible implementation manner of the sixth aspect, in a second possible implementation manner of the sixth aspect, the transmitter is further configured to send quasi co-sited configuration information to the UE through at least one of semi-static signaling and dynamic signaling.

With reference to the sixth aspect and the first and second possible implementation manners of the sixth aspect, in a third possible implementation manner of the sixth aspect, the transmitter is further configured to send, by using an explicit notification or an implicit notification, offset configuration information to the UE, where the offset configuration information includes an offset value of at least one channel characteristic of the first antenna port and the second antenna port, where the offset configuration information is used to indicate that at least one channel characteristic of the first antenna port and the second antenna port is quasi co-sited after being adjusted according to the offset value.

With reference to the sixth aspect and the first and second possible implementation manners of the sixth aspect, in a fourth possible implementation manner of the sixth aspect, the transmitter is further configured to send configuration information of a CSI-RS to the UE when the first antenna port is an antenna port for transmitting a cell-specific reference signal CRS and the second antenna port is an antenna port for transmitting a channel state information-reference signal CSI-RS, where the configuration information of the CSI-RS includes the quasi co-station configuration information, and the quasi co-station configuration information includes carrier information of the CRS, so that the UE obtains the quasi co-station configuration information from the configuration information of the CSI-RS.

With reference to the sixth aspect and the first to fourth possible implementation manners of the sixth aspect, in a fifth possible implementation manner of the sixth aspect, the base station further includes a receiver, where the receiver is configured to receive a first RSRP value reported by the UE; wherein the first RSRP value is measured by the UE on at least one of the first antenna port and the second antenna port.

With reference to the third and fourth possible implementation manners of the sixth aspect, in a sixth possible implementation manner of the sixth aspect, the base station further includes a receiver, where the receiver is configured to instruct, when the first antenna port and the second antenna port are quasi co-sited with respect to an average gain after being adjusted according to a power offset value, to receive a second RSRP value reported by the UE, where the second RSRP value is obtained by the UE according to a measurement result of at least one of the first antenna port and the second antenna port and the power offset value.

In a seventh aspect, embodiments of the present invention provide a computer program product, including a computer readable medium, where the readable medium includes a set of program codes for performing the above method for acquiring channel characteristics, or for performing the above method for acquiring channel characteristics.

In the above aspect and the possible implementation manner of the present invention, by adopting the quasi co-station configuration method of the cross-carrier antenna port, the problem that when some cells of some carriers have no some reference signals, the channel characteristics of the antenna port cannot be determined through quasi co-station configuration and the quasi co-station configuration is inflexible is solved, so that the cells and carriers without some reference signals can also use the quasi co-station configuration to determine the channel characteristics of the antenna port, the signal types corresponding to the antenna port for quasi co-station reference and the channel characteristics corresponding to the quasi co-station are further expanded, the application range of the quasi co-station configuration is expanded, and the quasi co-station configuration is more flexible.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a flow chart of a method for acquiring channel characteristics according to an embodiment of the present invention;

Fig. 2 is a flowchart of a method for acquiring channel characteristics according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of a ue for acquiring channel characteristics according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a ue for acquiring channel characteristics according to still another embodiment of the present invention;

fig. 5 is a schematic structural diagram of a base station according to another embodiment of the present invention;

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

fig. 7 is a schematic structural diagram of a ue according to another embodiment of the present invention;

fig. 8 is a schematic structural diagram of a user equipment according to another embodiment of the present invention;

fig. 9 is a schematic structural diagram of a base station according to another embodiment of the present invention;

fig. 10 is a schematic structural diagram of a base station according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Fig. 1 is a flowchart of a method for obtaining channel characteristics according to an embodiment of the present invention, where the method for obtaining channel characteristics includes:

step 11, the ue acquires quasi co-station configuration information, where the quasi co-station configuration information is used to indicate that the first antenna port and the second antenna port are quasi co-station with respect to at least one channel characteristic, where the first antenna port and the second antenna port respectively correspond to different carriers, for example, carrier frequency points and carrier bandwidths corresponding to the first antenna port and the second antenna port are at least different, which is specifically described as follows:

the first antenna port and the second antenna port are antenna ports on different carrier frequencies:

if the carrier frequency corresponding to the first antenna port is F1, the carrier frequency corresponding to the second antenna port is F2; or,

the first antenna port and the second antenna port are antenna ports on carriers of the same carrier frequency but different bandwidths:

if carrier frequencies of the carriers where the first antenna port and the second antenna port are located are F1, but the bandwidth of the carrier where the first antenna port is located is 5MHz, and the bandwidth of the carrier where the second antenna port is located is 1.4MHz (here, as long as the bandwidths of the carriers where the first antenna port and the second antenna port are located are different, and the bandwidths are not limited); or,

The first antenna port and the second antenna port are antenna ports on carriers of different carrier frequencies and different bandwidths:

if the carrier frequency of the carrier wave of the first antenna port is F1, the bandwidth is 5MHz, and the carrier frequency of the carrier wave of the first antenna port is F2, the bandwidth is 1.4MHz.

The UE acquiring quasi co-station configuration information may include:

the UE acquires the quasi co-station configuration information according to self predefining; or the UE acquires the quasi co-station configuration information according to the explicit notification of the base station or the implicit notification of the base station.

For example, the UE acquiring quasi co-sited configuration information may include:

and the UE acquires the quasi co-station configuration information according to at least one signaling of the received semi-static signaling and the received dynamic signaling.

Optionally, the quasi co-station configuration information further includes carrier information of the first antenna port. The carrier information may be at least one of cell identification information and carrier identification information.

The first antenna port is an antenna port for transmitting any one of a channel state information-Reference Signal (CSI-RS), a Cell-specific Reference Signal (CRS), a demodulation Reference Signal (Demodulation Reference Signal, DM RS), a primary synchronization Signal (Primary Synchronization Signal, PSS), a secondary synchronization Signal (Secondary Synchronization Signal, SSS), a Discovery Signal (DS), a positioning Reference Signal (Positioning Reference Signal, PRS), and a UE-specific Reference Signal (UE-specific RS).

The second antenna port is also an antenna port for transmitting any one of the following signals: CSI-RS, CRS, DM RS, PSS, SSS, DS, PRS, UE-specific RS.

When the first antenna port is an antenna port for transmitting a cell-specific reference signal CRS and the second antenna port is an antenna port for transmitting channel state information-reference signal CSI-RS, the UE acquiring quasi co-station configuration information may include:

the UE receives the configuration information of the CSI-RS, wherein the configuration information of the CSI-RS comprises quasi co-station configuration information, and the quasi co-station configuration information comprises carrier information of the CRS;

and the UE acquires quasi co-station configuration information from the configuration information of the CSI-RS.

The channel characteristics may include at least one of: time domain channel characteristics, frequency domain channel characteristics, and power domain channel characteristics.

Alternatively, the channel characteristics may include at least one of: delay spread, doppler shift, average gain, average received power, average delay, time of reception, frequency of reception, and reference signal received power (Reference Signal Receive Power, RSRP).

And step 12, the UE determines that at least one channel characteristic in the first antenna port and the second antenna port is quasi-co-sited according to the quasi-co-sited configuration information.

This step may be understood that the UE may assume that at least one channel characteristic of the first antenna port and the second antenna port is quasi-co-sited according to the quasi-co-sited configuration information, and the UE may determine that at least one channel characteristic of the first antenna port and the second antenna port is quasi-co-sited according to the quasi-co-sited assumption.

Step 13, the UE acquires the at least one channel characteristic quasi co-sited with the first antenna port in the second antenna port from the signals received on the first antenna port or the first antenna port and the second antenna port.

For example, the UE obtains the channel characteristics of the second antenna port according to the quasi co-station configuration information and the signal received on the first antenna port. In another example, the UE obtains the channel characteristics of the second antenna port according to the quasi co-station configuration information, the signals received on the first antenna port and the second antenna port.

Optionally, the UE may further obtain the channel characteristic of the first antenna port according to the quasi co-station configuration information and the signal received on the second antenna port, or the UE may obtain the channel characteristic of the first antenna port according to the quasi co-station configuration information and the signal received on the first antenna port and the second antenna port.

Assuming that the first antenna port belongs to a first cell and the second antenna port belongs to a second cell, at least one of carrier frequencies and bandwidths of the first cell and the second cell are different. The first cell and the second cell may be network side nodes, for example, the base station configures the cells on two carriers in the same frequency band of the UE, or the first cell and the second cell may be the cells on two carriers where the distance between the network side nodes configured to the UE is lower than a certain threshold, or the distance between the carrier frequencies of the first cell and the second cell may be any value, which is not limited herein.

For the first cell and the second cell, the UE determines that the first antenna port and the second antenna port are quasi co-sited with respect to at least one channel characteristic according to the quasi co-sited configuration information, which is illustrated below, but the present invention includes, but is not limited to, one or more of the following:

the UE determines that at least one of the antenna ports of the CRS of the first cell and the antenna ports of the CRS of the second cell is quasi-co-sited with respect to delay spread, doppler frequency shift, average gain and average delay according to the acquired quasi-co-sited configuration information;

The UE determines that at least one of the PSS antenna ports of the first cell and the PSS antenna ports of the second cell is quasi-co-sited with respect to delay spread, doppler frequency shift, average gain and average delay according to the acquired quasi-co-sited configuration information;

the UE determines that at least one of the SSS antenna ports of the first cell and the SSS antenna ports of the second cell is quasi-co-sited with respect to delay spread, doppler frequency shift, average gain and average delay according to the acquired quasi-co-sited configuration information;

the UE determines that each antenna port of the PSS/SSS of the first cell and each antenna port of the PSS/SSS of the second cell are quasi-co-sited with respect to at least one of delay spread, doppler frequency shift, average gain and average delay according to the acquired quasi-co-sited configuration information;

and the UE determines that at least one of the CSI-RS antenna ports of the first cell and the CRS antenna ports of the second cell is quasi-co-sited with respect to delay spread, doppler frequency shift, average gain and average delay according to the acquired quasi-co-sited configuration information. If, according to the acquired quasi co-station configuration information, the UE determines that each antenna port of the CSI-RS of the first cell and each antenna port of the CRS of the second cell are quasi co-station with respect to doppler spread and doppler shift;

And the UE determines that at least one of the CSI-RS antenna ports of the first cell and the DM-RS antenna ports of the second cell is quasi-co-sited with respect to delay spread, doppler frequency shift, average gain and average delay according to the acquired quasi-co-sited configuration information. For example, the UE determines, according to the acquired quasi co-sited configuration information, that each antenna port of the CSI-RS of the first cell and each antenna port of the DM RS of the second cell are quasi co-sited with respect to delay spread, doppler shift, average gain, and average delay.

The method further includes the base station configuring a transmission mode for the UE.

Further, the UE determines that the first antenna port and the second antenna port are quasi-co-sited with respect to at least one channel characteristic according to the quasi-co-sited configuration information and the transmission mode, as illustrated below, but the present invention includes, but is not limited to, one or more of the following:

when the UE is configured into transmission modes 1-10, the UE determines that each antenna port of a first cell CRS and each antenna port of a second cell CRS are quasi-co-sited with respect to at least one of delay spread, doppler frequency shift, average gain and average delay according to the acquired quasi-co-sited configuration information;

When the UE is configured into a transmission mode 8-10, the UE determines that each antenna port of a DM RS of a first cell and each antenna port of a DM RS of a second cell are quasi-co-sited with respect to at least one of delay spread, doppler frequency shift, average gain and average delay according to the acquired quasi-co-sited configuration information;

when the UE is configured in transmission modes 1-9, the UE determines that each antenna port of the CRSs, CSI-RSs, DM RSs, UE-specific RSs of the first cell and the second cell is quasi-co-sited with respect to at least one of delay spread, doppler shift, average gain, average received power, average delay, arrival time according to the acquired quasi-co-sited configuration information. For example, the UE determines, according to the acquired quasi co-sited configuration information, that the CRS, CSI-RS, DM RS, antenna ports of the UE-specific RS, and CRS ports of the second cell are quasi co-sited with respect to at least one of delay spread, doppler shift, average gain, and average delay.

When the UE is configured in the transmission mode 10, the UE determines that at least one of CRS or RCRS, CSI-RS, DM RS, UE-specific RS of the first cell and the second cell is quasi-co-sited with respect to at least one of delay spread, doppler shift, average gain, average received power, average delay, arrival time according to the acquired quasi-co-sited configuration information, e.g., the UE determines that at least one of CRS or RCRS of the first cell, CSI-RS, DM RS, UE-specific RS of the first cell and CRS of the second cell is quasi-co-sited with respect to at least one of delay spread, doppler shift, average gain, average delay; or, the UE determines, according to the acquired quasi co-station configuration information, that each antenna port of a CSI-RS of the first cell and each antenna port of a CRS or an RCRS of the second cell are quasi co-station with respect to at least one of delay spread, doppler shift, average gain, average received power, average delay, and arrival time.

In the embodiment of the present invention, the above-mentioned cells may be cells on different carriers, and the cells may be replaced by carriers, which is only an example of the present invention, and the present invention is not limited to the above-mentioned cases.

The transmission mode in the embodiment of the invention is used for explaining the transmission mode used for transmitting the data for the UE.

The CRS may include a CRS with a bandwidth that may be the entire system bandwidth or a portion of the system bandwidth, a period of 1ms or Nms (N is a positive integer), or a CRS may include a reference signal with any antenna port corresponding to a time-frequency position of an antenna port of the CRS.

Optionally, in the embodiment of the present invention, the average gain may be replaced by reference signal reference power, average received power or average channel gain; the average time delay may also be replaced with an arrival time or an average arrival time, but the present invention includes one or more of the cases not limited to the examples described above.

Optionally, before the step 13, the method further includes:

the UE receives deviation configuration information explicitly notified by the base station or implicitly notified by the base station, wherein the deviation configuration information comprises a deviation value of at least one channel characteristic in the first antenna port and the second antenna port, and the deviation configuration information is used for indicating that the at least one channel characteristic of the first antenna port and the second antenna port is quasi-co-sited after being adjusted according to the deviation value.

The UE determining that the first antenna port and the second antenna port are quasi-co-sited with respect to at least one channel characteristic according to the quasi-co-sited configuration information, comprising:

Optionally, the method provided by the embodiment of the invention further comprises the following steps:

Further, the UE receives offset configuration information explicitly notified by the base station or implicitly notified by the base station, including:

the UE receives deviation configuration information which is used for indicating that the first antenna port and the second antenna port are quasi-co-sited according to the average gain after being adjusted according to the power deviation value;

after the offset configuration information explicitly notified by the UE base station or implicitly notified by the base station, the method further includes:

That is, when the offset configuration information includes a power offset value, the offset configuration information indicates: when the first antenna port and the second antenna port are quasi-co-sited with respect to the average gain after being adjusted according to the power offset value, the UE may report a second RSRP value, where the second RSRP value is obtained by the UE according to a measurement result of at least one of the first antenna port and the second antenna port and the power offset value.

When the offset configuration information includes a time offset value, the offset configuration information is used to indicate: when the first antenna port and the second antenna port are quasi-co-sited with respect to average delay after being adjusted according to the time deviation value, the UE may obtain the receiving time of the second antenna port according to the receiving time of the first antenna port and the time deviation value. The second antenna port receiving time is equal to the sum of the first antenna port receiving time and the receiving time deviation value, wherein the receiving time deviation value can be an average time delay deviation value.

When the offset configuration information includes a frequency offset value, the offset configuration information is used to indicate: when the first antenna port and the second antenna port are quasi-co-sited with respect to doppler spread and doppler bias after being adjusted according to the frequency bias value, the UE may acquire receiving frequency and bias configuration information of the first antenna port, where the bias configuration information includes the frequency bias value, and the frequency bias value is a center frequency bias value between a carrier corresponding to the first antenna port and a carrier corresponding to the second antenna port; and the UE obtains the receiving frequency of the second antenna port according to the receiving frequency of the first antenna port and the central frequency deviation value. The second antenna port receiving frequency is equal to the sum of the first antenna port receiving frequency and the center frequency deviation value. The frequency deviation value may be implicitly notified, for example, the UE obtains the frequency deviation value according to the center frequencies of the two carriers configured by the base station, or the base station may notify the UE of the frequency deviation value.

Further, the method provided by the embodiment of the invention can further comprise the following steps:

accordingly, the UE obtaining the receiving frequency of the second antenna port according to the receiving frequency of the first antenna port and the center frequency offset value may include:

For the UE, the antenna ports quasi-co-sited with different antenna ports on the same carrier may be antenna ports on different carriers.

Alternatively, the second antenna port may be at least one. When there is more than one second antenna port, these second antenna ports may be antenna ports on different carrier frequencies and/or different bandwidths, or antenna ports on the same carrier frequency and/or the same bandwidth.

In the embodiment of the present invention, the quasi co-station configuration information is used to indicate that at least one channel characteristic in the first antenna port and the second antenna port is quasi co-station, and it may also be understood that the quasi co-station configuration information is used to indicate that the first antenna port and the second antenna port are quasi co-station with respect to the at least one channel characteristic. This is merely illustrative of the present invention, and the present invention is not limited to the above-described embodiments.

In this embodiment, the UE obtains the quasi co-station configuration information, and determines the channel characteristics of the quasi co-station between the antenna ports on different carriers, that is, the antenna ports across carriers, thereby solving the problem that the quasi co-station configuration cannot be performed when some reference signals are not available in some cells on some same carrier, realizing the quasi co-station of the antenna ports across carriers, and making the quasi co-station configuration more flexible.

Another embodiment provided by the present invention is similar to the embodiment shown in fig. 1, except that in this embodiment, the quasi co-station configuration information is predefined, and the quasi co-station configuration information includes carrier information of the first antenna port, and the carrier information is at least cell information.

In this embodiment, the quasi co-sited configuration information is predefined, where the quasi co-sited configuration information includes first cell information to which a predefined first antenna port belongs.

For example, the first cell to which the predefined first antenna port belongs may be a cell transmitting a physical downlink control CHannel (Physical Downlink Control chnnel, PDCCH) and/or an Enhanced physical downlink control CHannel (ePDCCH); or alternatively, the first and second heat exchangers may be,

The first cell to which the predefined first antenna port belongs may be a primary cell configured by a network side, such as a base station, for the UE; or alternatively, the first and second heat exchangers may be,

the first cell to which the predefined first antenna port belongs may be a cell corresponding to a carrier indicator field (Carrier Indicator Field, CIF) in downlink control information (Downlink Control information, DCI).

The first cell corresponds to a first carrier, and the first carrier is a carrier to which the first antenna port belongs.

Alternatively, the UE may also receive first cell information notified by the base station, and the first cell information may be implicitly notified by the base station.

In this embodiment, the UE acquires the quasi co-station configuration information according to the predefined, where the quasi co-station configuration information includes carrier information of the first antenna port, and the carrier information is at least cell information, and determines channel characteristics of quasi co-stations between antenna ports on different carriers, that is, between antenna ports across carriers, thereby solving a problem that quasi co-station configuration cannot be performed when cells on some same carrier have no some reference signals, realizing quasi co-station of antenna ports across carriers, and making quasi co-station configuration more flexible.

Another embodiment provided by the present invention is similar to the embodiment shown in fig. 1, and is different in that in this embodiment, the UE may be notified by the base station of the quasi co-station configuration information, and the UE obtains the quasi co-station configuration information according to the base station notification, as follows:

the base station notification may be an explicit notification or an implicit notification:

explicit notification includes: and carrying out notification of the quasi co-station configuration information through quasi co-station related special signaling.

For example, the base station may be signaled through semi-static signaling, such as radio resource control (Radio Resource Control, RRC) signaling; or alternatively

The base station may be notified by dynamic signaling, such as DCI notification; or alternatively

The base station may notify the N states through a combination of semi-static signaling and dynamic signaling, e.g., the base station notifies the N states through RRC signaling, each state corresponds to a cell and antenna port configuration for the QCL assumption of the second antenna port of the second cell, and notifies, through DCI, information of the state corresponding to the QCL assumption on the subframe indicated by the DCI.

The implicit notification may be:

notification is done by non-quasi co-sited related dedicated signaling. If the base station informs the UE of a reference carrier of a cell, unless explicitly informing carrier information of a first antenna port for indicating quasi co-station reference, the first antenna port for quasi co-station reference is an antenna port corresponding to the reference carrier; or alternatively

The base station informs the UE of a reference cell of one cell, and unless the base station explicitly informs carrier information of a first antenna port for indicating quasi co-sited reference, the first antenna port for quasi co-sited reference is an antenna port corresponding to the reference cell; or alternatively

The base station informs the UE of a reference cell on a reference carrier of one cell, and unless explicitly informed of carrier information indicating a first antenna port for quasi co-sited reference, the first antenna port for quasi co-sited reference is an antenna port corresponding to the reference cell on the reference carrier.

In this embodiment, the quasi co-station configuration information may further include carrier information of the first antenna port. The carrier information may be at least one of the following: cell identification information or carrier identification information, wherein the cell identification information can be serving cell index number information; the carrier identification information may be carrier frequency index information. The carrier information may be predefined, explicitly notified by the network side or implicitly notified by the network side.

The quasi co-station configuration information may be included in the configuration information of the signal corresponding to the second antenna port, where the configuration information corresponding to the second antenna port includes carrier information and/or a related index number of the signal corresponding to the first antenna port. Examples are as follows: the first antenna port is an antenna port of a cell-specific reference signal (CRS), the second antenna port is an antenna port of a CSI-RS, and the configuration information of the CSI-RS includes carrier information of the CRS, such as a serving cell index number corresponding to the CRS.

Before the base station informs the UE of the quasi co-station configuration information, when configuring the quasi co-station information, the UE may be configured in a first mode or a second mode:

in one aspect, an antenna port of a first signal of a first cell and an antenna port of a second signal of a second cell are quasi-co-sited with respect to at least one channel characteristic; for example, an antenna port of a certain CSI-RS of the first cell and an antenna port of a CRS or RCRS (reduced CRS) of the second cell are quasi co-sited with respect to at least one channel characteristic.

In a second mode, the antenna port of the first signal of the first cell and the antenna port of the third signal of the first cell are quasi-co-sited with respect to at least one channel characteristic (e.g., channel characteristic A, B, C or D), and the antenna port of the third signal of the first cell and the antenna port of the second signal of the second cell are quasi-co-sited with respect to at least one channel characteristic (e.g., channel characteristic a or B). Whereby the antenna port of the first signal of the first cell and the antenna port of the second signal of the second cell are quasi co-sited with respect to at least one channel characteristic, such as channel characteristic a or B.

For example: at least one channel characteristic of an antenna port of a certain CSI-RS of the first cell and an antenna port of a CRS or an RCRS of the first cell is quasi-co-sited, and the at least one channel characteristic of an antenna port of a CRS or an RCRS of the first cell and an antenna port of a CRS or an RCRS of the second cell is quasi-co-sited. Whereby the at least one channel characteristic in the antenna port of the CSI-RS of the first cell and the antenna port of the CRS or RCRS of the second cell is quasi co-sited.

Further, the UE may obtain the at least one channel characteristic of the antenna port of the CSI-RS of the first cell from a signal received on the antenna port of the CRS or RCRS of the second cell, or the UE may obtain the at least one channel characteristic of the antenna port of the CSI-RS of the first cell from a signal received on the antenna port of the CRS or RCRS of the first cell and the antenna port of the CRS or RCRS of the second cell.

Optionally, the base station may further notify the UE of a bias configuration information for the UE to assume a bias value of at least one channel characteristic between the first antenna port and the second antenna port, and after adjusting according to the bias value, the at least one channel characteristic between the first antenna port and the second antenna port is quasi-co-sited.

Specifically, the offset value may be a relative value, such as a time domain channel characteristic of the first antenna port versus a time domain channel characteristic of the second antenna port.

Here, the deviation value of the channel characteristic may be a deviation value of at least one of a time domain channel characteristic, a frequency domain channel characteristic, and a power domain channel characteristic.

When the offset value is 0, the offset value does not need to be notified to the UE, or when the UE does not accept the offset value, the UE assumes the offset value is 0.

In this embodiment, the UE receives the offset configuration information, adjusts the channel characteristics in the cross-carrier antenna port according to the offset value in the offset configuration information, and then achieves quasi-co-station, so that quasi-co-station of the cross-carrier antenna port is further achieved, and the quasi-co-station configuration is more flexible.

Another embodiment provided by the present invention is similar to the embodiment shown in fig. 1, except that in this embodiment, a part of quasi-co-sited configuration information may be notified to the UE by the base station, and a part of quasi-co-sited configuration information may be predefined by the UE.

Wherein, a part of quasi co-sited configuration information may be notified by the base station to the UE, including, explicitly notified by the base station and/or implicitly notified by the base station.

In this embodiment, a part of quasi co-station configuration information is notified to the UE by the base station, and a part of quasi co-station configuration information is predefined by the UE, so that a manner of acquiring the quasi co-station configuration information by the UE is more flexible.

Another embodiment provided by the present invention is similar to the embodiment shown in fig. 1, and is different in that in this embodiment, the quasi co-station configuration information obtained by the UE is used to indicate that the first antenna port and the second antenna port are quasi co-station with respect to the average gain, where the method of obtaining the quasi co-station configuration information may also adopt the methods shown in the second embodiment and the third embodiment.

In this embodiment, the method for obtaining the channel characteristics further includes: the UE reports an RSRP value. The RSRP value is obtained by measuring at least one of the first antenna port and the second antenna port.

Specifically, the UE may measure an RSRP value according to the first antenna port, measure an RSRP value according to the second antenna port, report the RSRP value measured on the first antenna port or the RSRP value measured on the second antenna port, or obtain a final RSRP value after performing statistical average or weighted average on the two RSRP values, and report the obtained final RSRP value.

Or, the UE may jointly measure an RSRP value according to the first antenna port and the second antenna port, and report the RSRP value obtained by the joint measurement.

Or in this embodiment, the UE receives, in addition to the quasi co-station configuration information, offset configuration information, where the offset configuration information is used to indicate: the first antenna port and the second antenna port are quasi-co-sited with respect to average gain after adjustment according to the offset value. The rest is similar to the embodiment shown in fig. 1, the method shown in the above embodiment may be used to obtain quasi co-station configuration information, and the method shown in the above embodiment may be used to obtain offset configuration information.

When the offset configuration information is used to indicate: when the first antenna port and the second antenna port are quasi-co-sited with respect to the average gain after being adjusted according to the power offset value, the method for acquiring the channel characteristics after the UE receives the offset configuration information further includes: the UE reports an RSRP value. The RSRP value is measured by the UE on the first antenna port and the second antenna port, or is obtained by the UE according to a measurement result of any one of the first antenna port and the second antenna port and the power offset value. If the offset value of the first antenna port relative to the second antenna port is +3dB, then the RSRP value of the second antenna port is obtained by subtracting 3dB from the RSRP value measured on the first antenna port.

Specifically, for two cases that the first antenna port and the second antenna port are quasi-co-sited with respect to average gain, and that the average gain is quasi-co-sited after the first antenna port and the second antenna port are adjusted according to the power offset value, the UE may measure an RSRP value according to the first antenna port, measure an RSRP value according to the second antenna port, and then statistically average or weighted average the two RSRP values to obtain a final RSRP value, and report the obtained final RSRP value. Or, the UE may jointly measure an RSRP value according to the first antenna port and the second antenna port, and report the measured RSRP value.

When the average gain is quasi-co-sited after the first antenna port and the second antenna port are adjusted according to the power offset value, the UE measures an RSRP value according to the first antenna port and adjusts according to the configured average received power offset value, if the offset value of the first antenna port relative to the second antenna port is +3dB, then the RSRP value obtained by subtracting 3dB from the measured RSRP value is obtained, the other RSRP value is measured according to the second antenna port, and then the two RSRP values are subjected to statistical average or weighted average to obtain a final RSRP value, and the obtained final RSRP value is reported.

In this embodiment, the UE obtains the RSRP value through the acquired quasi co-station configuration information and/or offset configuration information, and reports the RSRP value, so that the quasi co-station application of the cross-carrier antenna port is wider.

Another embodiment provided by the present invention is similar to the embodiment shown in fig. 1, except that, according to the embodiment shown in fig. 1, when the offset configuration information is used to indicate: when the average time delay of the first antenna port and the second antenna port is quasi-co-sited after being adjusted according to the time deviation value, the UE obtains the receiving time of the second antenna port according to the receiving time of the first antenna port and the time deviation value. The receiving time of the second antenna port is equal to the sum of the receiving time of the first antenna port and the time deviation value, wherein the receiving time deviation value can be an average time delay deviation value.

For example, if the first antenna port is earlier than the receiving time corresponding to the second antenna port, and the receiving time deviation value between the first antenna port and the second antenna port is dus, the UE obtains the receiving time of the first antenna port according to the signal on the first antenna port, and then the UE may consider that the UE is the receiving time corresponding to the second antenna port according to the receiving time corresponding to the first antenna port plus dus.

When the offset configuration information is used to indicate: after the first antenna port and the second antenna port are adjusted according to the frequency deviation value, when the Doppler spread and the Doppler offset in the first antenna port and the second antenna port are quasi co-sited, the UE obtains the receiving frequency of the second antenna port according to the receiving frequency of the first antenna port and the frequency deviation value; the frequency deviation value is a center frequency deviation value between the carrier corresponding to the first antenna port and the carrier corresponding to the second antenna port. The second antenna port receiving frequency is equal to the sum of the first antenna port receiving frequency and the center frequency deviation value.

For example, if the center frequency of the carrier corresponding to the first antenna port is lower than the center frequency of the carrier corresponding to the second antenna port, the center frequency difference between the carrier corresponding to the first antenna port and the carrier corresponding to the second antenna port is a MHz, and the receiving frequency obtained by the UE according to the signal on the first antenna port is B MHz, then the UE may consider that the receiving frequency of the second antenna port is (a+b) MHz.

Examples are as follows: if the center frequency of the carrier corresponding to the first antenna port is lower than the center frequency of the carrier corresponding to the second antenna port, the center frequency deviation value between the carrier corresponding to the first antenna port and the carrier corresponding to the second antenna port is a MHz, the receiving frequency obtained by the UE according to the signal on the first antenna port is B MHz, and the frequency error obtained by the UE according to the signal on the first antenna port is C Hz, then the receiving frequency of the second antenna port may be considered as (a+b) mhz+c Hz by the UE.

In this embodiment, the UE obtains the receiving frequency of the antenna port according to the acquired quasi co-station configuration information and/or deviation configuration information and/or frequency error, so that the quasi co-station application of the cross-carrier antenna port is wider.

Fig. 2 is a flowchart of a method for acquiring channel characteristics according to another embodiment of the present invention. In this embodiment, the method for acquiring channel characteristics includes:

step 21, the base station configures quasi co-station for the UE, where the quasi co-station includes that at least one channel characteristic of the first antenna port and the second antenna port is quasi co-station, and the first antenna port and the second antenna port respectively correspond to different carriers.

For example, it may be quasi co-sited that the base station configures a certain channel characteristic or certain channel characteristics of the first antenna port and the second antenna port on different carriers for the UE.

Wherein the channel characteristics may include at least one of: time domain channel characteristics, frequency domain channel characteristics, power domain channel characteristics.

Alternatively, the channel characteristics may include at least one of: delay spread, doppler shift, average gain, average received power, average delay, received time, received frequency, reference signal received power RSRP.

Step 22, the base station sends quasi co-station configuration information to the UE, so that the UE determines that at least one channel characteristic of the first antenna port and the second antenna port is quasi co-station according to the quasi co-station configuration information, and obtains at least one channel characteristic of the second antenna port quasi co-station with the first antenna port from the signal received on the first antenna port or the first antenna port and the second antenna port.

The base station sending quasi co-station configuration information to the UE may include:

For example, the base station sending quasi co-station configuration information to the UE may include:

the base station transmits quasi co-station configuration information to the UE through at least one of semi-static signaling and dynamic signaling.

Before the base station sends the quasi co-station configuration information to the UE, the method may further include:

the base station sends, to the UE, offset configuration information through explicit notification or implicit notification, where the offset configuration information may include an offset value of at least one channel characteristic of the first antenna port and the second antenna port, where the offset configuration information is used to indicate that the at least one channel characteristic of the first antenna port and the second antenna port is quasi-co-sited after being adjusted according to the offset value.

The first antenna port and the second antenna port may be antenna ports for transmitting any one of CSI-RS, CRS, DM RS, PSS, SSS, discovery Signal, PRS, and UE-specific RS.

When the first antenna port is an antenna port for transmitting a cell-specific reference signal CRS and the second antenna port is an antenna port for transmitting CSI-RS, the base station transmitting quasi co-station configuration information to the UE may include:

the base station transmits configuration information of the CSI-RS to the UE, wherein the configuration information of the CSI-RS comprises quasi co-station configuration information, and the quasi co-station configuration information comprises carrier information of the CRS, so that the UE acquires the quasi co-station configuration information from the configuration information of the CSI-RS.

Further, the method may further include:

the base station receives a first RSRP value reported by the UE; wherein the first RSRP value is measured by the UE on at least one of the first antenna port and the second antenna port. Wherein the UE measures the first RSRP value if quasi-co-sited configuration information is used to indicate that the first antenna port and the second antenna port are quasi-co-sited with respect to average gain. The quasi co-sited information may be predefined or may be implicitly or explicitly informed by the base station.

Or when the offset configuration information sent by the base station to the UE is used to indicate that the first antenna port and the second antenna port are quasi co-sited with respect to the average gain after being adjusted according to the power offset value, and the offset configuration information includes the power offset value, after the base station sends the offset configuration information to the UE through explicit notification or implicit notification, the method may further include:

And the base station receives a second RSRP value reported by the UE, wherein the second RSRP value is obtained by the UE according to the measurement result of at least one antenna port in the first antenna port and the second antenna port and the power deviation value.

In this embodiment, the base station configures quasi co-station for the UE and sends the quasi co-station configuration information to the UE, so that the quasi co-station configuration information can be obtained, and the channel characteristics of the quasi co-stations between the antenna ports on different carriers, that is, the antenna ports across carriers, are determined, so that the problem that the quasi co-station configuration cannot be performed when some reference signals are not available in cells on some same carrier is solved, the quasi co-station of the antenna ports across carriers is realized, and the quasi co-station configuration is more flexible.

In the present invention, the quasi co-station configuration information may be sent to the UE by the base station, or any other node on the network side, such as a relay node, a central controller, or a radio frequency head, etc., which is only exemplified by the base station, but the present invention is not limited thereto.

Fig. 3 is a schematic structural diagram of a ue for acquiring channel characteristics according to another embodiment of the present invention. The UE for acquiring channel characteristics provided in this embodiment is used to implement the method for acquiring channel characteristics shown in the foregoing embodiment, where in this embodiment, the UE includes: a quasi co-station information acquisition module 31, a quasi co-station determination module 32, and a channel characteristic acquisition module 33.

The quasi co-station information obtaining module 31 is configured to obtain quasi co-station configuration information, where the quasi co-station configuration information is used to indicate that at least one channel characteristic in a first antenna port and a second antenna port is quasi co-station, where the first antenna port and the second antenna port respectively correspond to different carriers;

the quasi co-station determining module 32 is configured to determine that at least one channel characteristic of the first antenna port and the second antenna port is quasi co-station according to the quasi co-station configuration information acquired by the quasi co-station information acquiring module 91;

the channel characteristic obtaining module 33 is configured to obtain the at least one channel characteristic of the second antenna port quasi co-sited with the first antenna port from the first antenna port or the signals received on the first antenna port and the second antenna port according to the quasi co-sited determined by the quasi co-sited determining module 32.

Optionally, referring to fig. 4, the quasi co-station information obtaining module 31 includes any one of the following sub-modules:

a first configuration obtaining sub-module 31a, configured to obtain the quasi co-sited configuration information according to a predefined definition of the user equipment;

a second configuration obtaining sub-module 31b, configured to obtain the quasi co-station configuration information according to an explicit notification of the base station or an implicit notification of the base station.

Optionally, the second configuration obtaining sub-module 31b includes:

the third configuration obtaining sub-module 31c is configured to obtain the quasi co-station configuration information by receiving at least one of semi-static signaling and dynamic signaling.

Optionally, the UE provided in this embodiment further includes: and a deviation information receiving module 34, configured to receive deviation configuration information before the channel characteristic obtaining module 33 obtains the channel characteristic of the second antenna port, where the deviation configuration information is used to indicate that at least one channel characteristic of the first antenna port and the second antenna port is quasi-co-sited after being adjusted according to the deviation value. At this time, the quasi co-station determining module 32 includes:

the quasi co-station submodule 32a is configured to determine that at least one channel characteristic of the first antenna port and the second antenna port is quasi co-station according to the quasi co-station configuration information and the offset configuration information received by the offset information receiving module 34.

Optionally, the quasi co-sited information acquiring module 31 includes:

and a carrier acquisition sub-module 31d, configured to acquire carrier information of the first antenna port.

Optionally, the carrier information acquired by the carrier acquisition sub-module 31d is at least one of cell identification information and carrier identification information.

Optionally, the quasi co-sited information acquiring module 31 includes:

an information receiving sub-module 31e, configured to receive configuration information of a CSI-RS when the first antenna port is an antenna port for transmitting a cell-specific reference signal CRS and the second antenna port is an antenna port for transmitting channel state information-reference signal CSI-RS, where the configuration information of the CSI-RS includes the quasi co-sited configuration information, and the quasi co-sited configuration information includes carrier information of the CRS;

an information obtaining sub-module 31f, configured to obtain the quasi co-station configuration information from the configuration information of the CSI-RS received by the information receiving sub-module 31 e.

Optionally, in the quasi co-station configuration information acquired by the quasi co-station information acquiring module 31, the channel characteristics include at least one of the following: time domain channel characteristics, frequency domain channel characteristics, power domain channel characteristics.

Optionally, in the quasi co-station configuration information acquired by the quasi co-station information acquiring module 31, the channel characteristics include at least one of the following: delay spread, doppler shift, average gain, average received power, average delay, received time, received frequency, reference signal received power RSRP.

Optionally, in the quasi co-station configuration information acquired by the quasi co-station information acquiring module 31, the first antenna port and the second antenna port are antenna ports for transmitting any one of CSI-RS, cell-specific reference signals (CRS), DM RS, PSS, SSS, discovery Signal, PRS, and UE-specific RS.

Optionally, the UE provided by the embodiment of the present invention further includes:

a first measurement module 35, configured to measure a first RSRP value on at least one of the first antenna port and the second antenna port after the quasi co-station information obtaining module 31 obtains quasi co-station configuration information;

the first reporting module 36 is configured to report the first RSRP value measured by the first measuring module 35.

Optionally, when the offset configuration information received by the offset information receiving module 34 is used to indicate that the first antenna port and the second antenna port are quasi co-sited with respect to the average gain after being adjusted according to the power offset value, the UE provided in the embodiment of the present invention further includes:

a second measurement module 37, configured to obtain a second RSRP value according to the measurement result of at least one of the first antenna port and the second antenna port and the power offset value after the offset information receiving module 34 receives the offset configuration information;

And a second reporting module 38, configured to report the second RSRP value obtained by the second measurement module 37.

Optionally, when the offset configuration information received by the offset information receiving module 34 is used to indicate that the first antenna port and the second antenna port are quasi co-sited with respect to doppler spread and doppler offset after being adjusted according to a frequency offset value, the UE provided by the embodiment of the present invention further includes:

a first receiving frequency obtaining module 39, configured to obtain, after the deviation information receiving module 34 receives the deviation configuration information, a receiving frequency of the first antenna port and the deviation configuration information, where the deviation configuration information includes the frequency deviation value, and the frequency deviation value is a center frequency deviation value between the carrier corresponding to the first antenna port and the carrier corresponding to the second antenna port;

a second receiving frequency obtaining module 310, configured to obtain a receiving frequency of the second antenna port according to the receiving frequency of the first antenna port and the center frequency deviation value obtained by the first receiving frequency obtaining module 39.

a frequency error measurement module 311, configured to measure a frequency error of the first antenna port according to a signal received at the first antenna port;

The second receiving frequency obtaining module 310 is configured to obtain the receiving frequency of the second antenna port according to the center frequency deviation value, the frequency error of the first antenna port measured by the frequency error measuring module 311, and the receiving frequency.

and a receiving time obtaining module 312, configured to obtain, when the offset configuration information received by the offset information receiving module 34 is used to indicate that the first antenna port and the second antenna port are quasi co-sited with respect to average delay after being adjusted according to a time offset value, a receiving time of the second antenna port according to a receiving time of the first antenna port and the time offset value.

In this embodiment, the UE acquires the quasi co-station configuration information through the quasi co-station information acquisition module, and determines the channel characteristics of the quasi co-station between the antenna ports on different carriers, that is, the antenna ports of the cross carrier through the quasi co-station determination module, so as to solve the problem that the quasi co-station configuration cannot be performed when some reference signals are not available in some cells on the same carrier, realize the quasi co-station of the antenna ports of the cross carrier, and make the quasi co-station configuration more flexible.

Fig. 5 is a schematic structural diagram of a base station according to another embodiment of the present invention. The base station provided in this embodiment is configured to implement the method shown in fig. 2, where the base station includes:

a configuration module 41, configured to configure quasi co-station for a user equipment UE, where the quasi co-station includes a first antenna port and a second antenna port, where at least one channel characteristic of the first antenna port and the second antenna port are quasi co-station, and the first antenna port and the second antenna port respectively correspond to different carriers;

a configuration information sending module 42, configured to send quasi co-station configuration information configured by the configuration module 41 to the UE, so that the UE determines that at least one channel characteristic of the first antenna port and the second antenna port is quasi co-station according to the quasi co-station configuration information, and obtains the at least one channel characteristic of the second antenna port quasi co-station with the first antenna port from the signal received on the first antenna port or the first antenna port and the second antenna port.

Further, referring to fig. 6, the configuration information sending module 42 includes:

a first configuration sending sub-module 421, configured to send quasi co-station configuration information to the UE through explicit notification or implicit notification.

Further, the first configuration sending submodule 421 includes:

a second configuration sending sub-module 422, configured to send quasi co-sited configuration information to the UE through at least one of semi-static signaling and dynamic signaling.

Optionally, the base station provided by the embodiment of the present invention further includes: a bias information sending module 43, configured to send bias configuration information to the UE by explicitly notifying or implicitly notifying, before the configuration information sending module 42 sends quasi-co-sited configuration information to the UE, where the bias configuration information includes a bias value of at least one channel characteristic of the first antenna port and the second antenna port, and the bias configuration information is used to indicate that the at least one channel characteristic of the first antenna port and the second antenna port is quasi-co-sited after being adjusted according to the bias value.

Further, the configuration information sending module 42 further includes:

a first carrier transmitting sub-module 423, configured to transmit carrier information of the first antenna port.

Further, the carrier information sent by the first carrier sending sub-module 423 is at least one of cell identification information and carrier identification information.

Further, the configuration information sending module 42 includes:

A second carrier transmitting sub-module 424, configured to, when the first antenna port is an antenna port for transmitting a cell-specific reference signal CRS and the second antenna port is an antenna port for transmitting a channel state information-reference signal CSI-RS, send configuration information of the CSI-RS to the UE, where the configuration information of the CSI-RS includes the quasi co-sited configuration information, and the quasi co-sited configuration information includes carrier information of the CRS.

Further, in the quasi co-station configuration information sent by the configuration information sending module 42, the channel characteristics include at least one of the following: time domain channel characteristics, frequency domain channel characteristics, power domain channel characteristics.

Further, in the quasi co-station configuration information sent by the configuration information sending module 42, the channel characteristics include at least one of the following: delay spread, doppler shift, average gain, average received power, average delay, received time, received frequency, reference signal received power RSRP.

Optionally, in the quasi co-station configuration information sent by the configuration information sending module 42, the first antenna port and the second antenna port are antenna ports for transmitting any one of channel state information, namely, a reference Signal CSI-RS, a cell specific reference Signal CRS, a demodulation reference Signal DM RS, a primary synchronization Signal PSS, a secondary synchronization Signal SSS, a Discovery Signal, a positioning reference Signal PRS, and a UE specific reference Signal UE-specific RS.

Further, the base station provided by the embodiment of the invention further includes:

a first receiving module 44, configured to receive a first RSRP value reported by the UE after the configuration information sending module 42 sends quasi co-sited configuration information to the UE; wherein the first RSRP value is measured by the UE on at least one of the first antenna port and the second antenna port. Wherein the UE measures the first RSRP value if quasi-co-sited configuration information is used to indicate that the first antenna port and the second antenna port are quasi-co-sited with respect to average gain. The quasi co-sited information may be predefined or may be implicitly or explicitly informed by the base station.

a second receiving module 45, configured to receive, when the offset configuration information sent by the offset information sending module 43 is used to indicate that the average gain is quasi co-station after the first antenna port and the second antenna port are adjusted according to the power offset value, a second RSRP value reported by the UE after the offset information sending module 43 sends the offset configuration information to the UE, where the second RSRP value is obtained by the UE according to a measurement result of at least one antenna port of the first antenna port and the second antenna port and the power offset value.

In the above embodiment, the UE may perform the assumption of the quasi co-station channel characteristic between the antenna ports of the cross carriers according to the quasi co-station configuration information, and obtain the channel characteristic of one antenna port on one carrier according to the channel characteristic of another antenna port on another carrier, so that the UE may flexibly and accurately obtain the signal characteristics of the antenna ports on each carrier, and may reduce the complexity of the UE.

In this embodiment, the base station configures the quasi co-station for the UE through the configuration module, and sends the quasi co-station configuration information to the UE through the configuration information sending module, so that the UE can obtain the quasi co-station configuration information, and determine the channel characteristics of the quasi co-station between the antenna ports on different carriers, that is, the antenna ports across carriers, thereby solving the problem that the quasi co-station configuration cannot be performed when some reference signals are not available in cells on some same carrier, realizing the quasi co-station of the antenna ports across carriers, and making the quasi co-station configuration more flexible.

Fig. 7 is a schematic structural diagram of a ue according to another embodiment of the present invention. In this embodiment, the user equipment includes: a memory 51 and a processor 52 connected to the memory 51, wherein the memory 51 stores a set of program codes, and the processor 52 is configured to invoke the program codes stored in the memory 51, and perform the following operations in the method for acquiring channel characteristics according to fig. 1 and the method embodiment based on fig. 1:

Acquiring quasi co-station configuration information, wherein the quasi co-station configuration information is used for indicating that at least one channel characteristic in a first antenna port and a second antenna port is quasi co-station; wherein the first antenna port and the second antenna port correspond to different carriers respectively;

determining that at least one channel characteristic in the first antenna port and the second antenna port is quasi-co-sited according to the quasi-co-sited configuration information;

and acquiring the at least one channel characteristic quasi co-sited with the first antenna port in the second antenna port from the signals received on the first antenna port or the first antenna port and the second antenna port.

Further referring to fig. 8, the user equipment further comprises a receiver 53, the receiver 53 being configured for the quasi co-sited configuration information explicitly notified by the base station or implicitly notified by the base station.

Further, the receiver 53 is further configured to receive offset configuration information explicitly or implicitly notified by the base station.

Further, the ue further includes a transmitter 54, where the transmitter 54 is configured to report a first RSRP value; wherein the first RSRP value is called by the processor 52 to the program code stored in the memory 51 to execute: measured at least one of the first antenna port and the second antenna port.

Alternatively, the transmitter 54 may be configured to report a second RSRP value, which is called by the processor 52 to the program code stored in the memory 51, to perform: and obtaining according to the measurement result of at least one antenna port of the first antenna port and the second antenna port and the power deviation value.

In this embodiment, the user equipment invokes the program code in the memory through the processor to obtain the quasi co-station configuration information, and determines the channel characteristics of the quasi co-stations between the antenna ports on different carriers, that is, the antenna ports of the cross carrier, thereby solving the problem that the quasi co-station configuration cannot be performed when some reference signals are not available in the cells on some same carrier, realizing the quasi co-station of the antenna ports of the cross carrier, and making the quasi co-station configuration more flexible.

Fig. 9 is a schematic structural diagram of a base station according to another embodiment of the present invention, where the base station includes: a transmitter 61, a memory 62 and a processor 63 connected to the memory 62, wherein the memory 62 stores a set of program codes, and the processor 63 is configured to invoke the program codes stored in the memory 62 to perform the following operations in the method for acquiring channel characteristics as shown in fig. 2: and configuring quasi co-station for User Equipment (UE), wherein the quasi co-station comprises a first antenna port and a second antenna port, at least one channel characteristic of which is quasi co-station, and the first antenna port and the second antenna port respectively correspond to different carriers. The transmitter 61 is configured to send quasi co-station configuration information to the UE, so that the UE determines that at least one channel characteristic of the first antenna port and the second antenna port is quasi co-station according to the quasi co-station configuration information, and obtains the at least one channel characteristic of the second antenna port quasi co-station with the first antenna port from a signal received on the first antenna port or the first antenna port and the second antenna port.

Further, the transmitter 61 is further configured to send quasi co-sited configuration information to the UE by means of an explicit notification or an implicit notification.

Further, the transmitter 61 is further configured to send quasi co-sited configuration information to the UE through at least one of semi-static signaling and dynamic signaling.

Further, the transmitter 61 is further configured to send, by explicit notification or implicit notification, offset configuration information to the UE, where the offset configuration information includes an offset value of at least one channel characteristic of the first antenna port and the second antenna port, and the offset configuration information is used to indicate that at least one channel characteristic of the first antenna port and the second antenna port is quasi-co-sited after being adjusted according to the offset value.

Further, the transmitter 61 is further configured to send configuration information of a CSI-RS to the UE when the first antenna port is an antenna port for transmitting a cell-specific reference signal CRS and the second antenna port is an antenna port for transmitting a channel state information-reference signal CSI-RS, where the configuration information of the CSI-RS includes the quasi co-sited configuration information, and the quasi co-sited configuration information includes carrier information of the CRS, so that the UE obtains the quasi co-sited configuration information from the configuration information of the CSI-RS.

Further, referring to fig. 10, the base station further includes a receiver 64, where the receiver 64 is configured to receive a first RSRP value reported by the UE; wherein the first RSRP value is measured by the UE on at least one of the first antenna port and the second antenna port.

Or further, the receiver 64 is configured to receive a second RSRP value reported by the UE when the offset configuration information sent by the transmitter is used to indicate that the first antenna port and the second antenna port are quasi co-sited with respect to average gain after being adjusted according to a power offset value, where the second RSRP value is obtained by the UE according to a measurement result of at least one antenna port of the first antenna port and the second antenna port and the power offset value.

Embodiments of the present invention also provide a computer program product comprising a computer readable medium including a first set of program code for performing the steps of the method of fig. 1 described above:

Further, the UE obtains quasi co-sited configuration information, including:

Further, the UE acquires the quasi co-sited configuration information according to an explicit notification of a base station or an implicit notification of the base station, including:

Further, before the acquiring the at least one channel characteristic quasi co-sited with the first antenna port in the second antenna port, the method further comprises:

Further, the quasi co-station configuration information acquired by the UE further includes carrier information of the first antenna port.

Further, the carrier information is at least one of cell identification information and carrier identification information.

Further, when the first antenna port is an antenna port for transmitting a cell-specific reference signal CRS and the second antenna port is an antenna port for transmitting channel state information-reference signal CSI-RS, the UE acquires quasi co-station configuration information, including:

Further, the channel characteristics include at least one of: time domain channel characteristics, frequency domain channel characteristics, power domain channel characteristics.

Further, the channel characteristics include at least one of: delay spread, doppler shift, average gain, average received power, average delay, received time, received frequency, reference signal received power RSRP.

Further, the first antenna port and the second antenna port are antenna ports for transmitting any one of a channel state information-reference signal CSI-RS, a cell specific reference signal CRS, a demodulation reference signal DM RS, a primary synchronization signal PSS, a secondary synchronization signal SSS, a discovery signal Di scovery Signal, a positioning reference signal PRS, and a UE specific reference signal UE-specific RS.

Further, after the UE acquires the quasi co-station configuration information, the method further includes:

Further, the offset configuration information received by the UE is used to indicate that the first antenna port and the second antenna port are quasi co-sited with respect to average gain after being adjusted according to the power offset value;

Further, when the offset configuration information is used for indicating that the first antenna port and the second antenna port are quasi co-sited with respect to doppler spread and doppler offset after being adjusted according to a frequency offset value, after the UE receives the offset configuration information explicitly notified or implicitly notified by the base station, the UE further includes:

Further, the method further comprises:

Further, when the offset configuration information is used for indicating that the first antenna port and the second antenna port are quasi co-sited with respect to average delay after being adjusted according to a time offset value, after the UE receives the offset configuration information explicitly notified by the base station or implicitly notified by the base station, the UE further includes:

In addition, another computer program product is provided according to an embodiment of the present invention, where the computer program product includes a computer readable medium including a second set of program codes for performing the steps in the method shown in fig. 2, as described above:

Further, the base station sends quasi co-station configuration information to the UE, including:

Further, the base station sends quasi co-station configuration information to the UE through explicit notification or implicit notification, including:

Further, the method further comprises:

Further, the quasi co-station configuration information sent by the base station to the UE further includes carrier information of the first antenna port.

Further, when the first antenna port is an antenna port for transmitting a cell-specific reference signal CRS and the second antenna port is an antenna port for transmitting channel state information-reference signal CSI-RS, the base station transmits quasi co-sited configuration information to the UE, including:

Further characterized in that the channel characteristics include at least one of: delay spread, doppler shift, average gain, average received power, average delay, received time, received frequency, reference signal received power RSRP.

Further characterized in that after the base station transmits quasi co-sited configuration information to the UE, the method further comprises:

Further, when the offset configuration information sent by the base station to the UE is used for indicating that the first antenna port and the second antenna port are quasi co-sited with respect to the average gain after being adjusted according to the power offset value, the base station sends the offset configuration information to the UE through explicit notification or implicit notification, and the method further includes:

and the base station receives a second RSRP value reported by the UE, wherein the second RSRP value is obtained by the UE according to a measurement result of at least one antenna port in the first antenna port and the second antenna port and the power deviation value. It will be appreciated by those skilled in the art that the above-described combination of modules is not limited thereto and that the apparatus may be used to perform the method of FIG. 2 described above.

In this embodiment, the base station invokes the program code in the memory through the processor to configure quasi co-station for the UE, and sends the quasi co-station configuration information to the UE through the transmitter, so that the UE can acquire the quasi co-station configuration information, and determine the channel characteristics of the quasi co-station between the antenna ports on different carriers, that is, the antenna ports across carriers, thereby solving the problem that the quasi co-station configuration cannot be performed when some reference signals are not available in cells on some same carrier, realizing the quasi co-station of the antenna ports across carriers, and making the quasi co-station configuration more flexible.

Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. A method for acquiring channel characteristics, comprising:

the UE acquires the at least one channel characteristic quasi-co-sited with the first antenna port in the second antenna port according to the determined quasi-co-sited signals received from the first antenna port or the first antenna port and the second antenna port;

the first antenna port is an antenna port for transmitting at least one signal of channel state information-reference signals, primary synchronization signals and secondary synchronization signals.

2. The method of claim 1, wherein the UE obtaining quasi co-sited configuration information comprises:

3. The method of claim 2, wherein the UE acquiring the quasi co-sited configuration information according to a base station explicit notification or a base station implicit notification comprises:

4. A method according to any of claims 1-3, wherein prior to said obtaining said at least one channel characteristic in a second antenna port quasi co-sited with said first antenna port, the method further comprises:

5. A method according to any of claims 1-3, wherein the quasi co-sited configuration information obtained by the UE further comprises carrier information of the first antenna port.

6. The method of claim 5, wherein the carrier information is at least one of cell identification information and carrier identification information.

7. The method of claim 5, wherein the UE obtaining quasi co-sited configuration information when the first antenna port is an antenna port for transmitting cell-specific reference signals, CRSs, and the second antenna port is an antenna port for transmitting channel state information, CSI-RSs, comprises:

8. The method of any of claims 1 to 3, 6 to 7, wherein the second antenna port comprises an antenna port transmitting channel state information-reference signals.

9. The method according to any of claims 1 to 3, 6 to 7, wherein the channel characteristics comprise at least one of: delay spread, doppler shift, average gain, average received power, average delay, received time, received frequency, reference signal received power RSRP.

10. A method for acquiring channel characteristics, comprising:

the base station sends quasi co-station configuration information to the UE, wherein the quasi co-station configuration information is used for the UE to determine that at least one channel characteristic in the first antenna port and the second antenna port is quasi co-station;

11. The method of claim 10, wherein the base station transmitting quasi co-sited configuration information to the UE comprises:

12. The method of claim 11, wherein the base station transmitting quasi co-sited configuration information to the UE through an explicit notification or an implicit notification comprises:

13. The method according to any one of claims 10-12, wherein the method further comprises:

14. The method of any of claims 13, wherein the quasi co-sited configuration information sent by the base station to the UE further comprises carrier information of the first antenna port.

15. The method according to any of claims 10 to 12, 14, wherein the second antenna port comprises an antenna port transmitting channel state information-reference signals.

16. The method according to any of claims 10 to 12, 14, wherein the channel characteristics comprise at least one of: delay spread, doppler shift, average gain, average received power, average delay, received time, received frequency, reference signal received power RSRP.

17. A user device for acquiring channel characteristics, comprising:

the channel characteristic obtaining module is used for obtaining the at least one channel characteristic quasi-co-sited with the first antenna port in the second antenna port from the first antenna port or the signals received by the first antenna port and the second antenna port according to the quasi-co-sited determined by the quasi-co-sited determining module;

18. The user equipment of claim 17, wherein the quasi co-sited information acquisition module comprises:

A first configuration acquisition sub-module, configured to acquire the quasi co-sited configuration information according to the predefined definition of the user equipment; or alternatively

19. The user device of claim 18, wherein the second configuration acquisition sub-module comprises:

20. The user equipment according to any of the claims 17 to 19, characterized in that the user equipment further comprises:

a deviation information receiving module, configured to receive deviation configuration information before the channel characteristic obtaining module obtains the channel characteristic of the second antenna port, where the deviation configuration information includes a deviation value of at least one channel characteristic of the first antenna port and the second antenna port, and the deviation configuration information is used to indicate that the at least one channel characteristic of the first antenna port and the second antenna port is quasi-co-sited after being adjusted according to the deviation value;

The quasi co-station determining module includes:

21. The user equipment according to any of claims 17 to 19, wherein the quasi co-sited information acquisition module comprises a carrier acquisition sub-module for acquiring carrier information of the first antenna port.

22. The ue of claim 21, wherein the carrier information acquired by the carrier acquisition submodule is at least one of cell identification information and carrier identification information.

23. The user equipment of claim 21, wherein the quasi co-sited information acquisition module comprises:

24. The user equipment according to any of claims 17 to 19, 22 to 23, wherein the second antenna port comprises an antenna port transmitting channel state information-reference signals.

25. The user equipment according to any of claims 17 to 19, 22 to 23, wherein the channel characteristics comprise at least one of: delay spread, doppler shift, average gain, average received power, average delay, received time, received frequency, reference signal received power RSRP.

26. A base station, comprising:

a configuration information sending module, configured to send quasi co-station configuration information configured by the configuration module to the UE, where the quasi co-station configuration information is used by the UE to determine that at least one channel characteristic in the first antenna port and the second antenna port is quasi co-station;

27. The base station of claim 26, wherein the configuration information sending module comprises:

28. The base station of claim 27, wherein the first configuration transmission submodule comprises:

29. The base station according to any of claims 26 to 28, characterized in that the base station further comprises:

and the deviation information sending module is used for sending deviation configuration information to the UE through explicit notification or implicit notification before the configuration information sending module sends quasi-co-station configuration information to the user equipment, wherein the deviation configuration information comprises a deviation value of at least one channel characteristic in the first antenna port and the second antenna port, and the deviation configuration information is used for indicating that the at least one channel characteristic of the first antenna port and the second antenna port is quasi-co-station after being adjusted according to the deviation value.

30. The base station according to any one of claims 26 to 28, wherein the configuration information sending module further comprises:

31. The base station according to any of the claims 26 to 28, wherein the second antenna port comprises an antenna port transmitting channel state information-reference signals.

32. The base station according to any of claims 26 to 28, wherein the channel characteristics comprise at least one of: delay spread, doppler shift, average gain, average received power, average delay, received time, received frequency, reference signal received power RSRP.

33. A computer readable storage medium having instructions stored therein for performing the method of any one of claims 1 to 9.

34. A computer storage medium storing computer software instructions for use by a user equipment for performing the method of any one of claims 10 to 16.