CN104602267B - A kind of the measurement interval configuration method and serving BS of different-frequency measure unlicensed spectrum - Google Patents

A kind of the measurement interval configuration method and serving BS of different-frequency measure unlicensed spectrum Download PDF

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CN104602267B
CN104602267B CN201510054812.9A CN201510054812A CN104602267B CN 104602267 B CN104602267 B CN 104602267B CN 201510054812 A CN201510054812 A CN 201510054812A CN 104602267 B CN104602267 B CN 104602267B
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measurement
interval
pilot frequency
unlicensed spectrum
base station
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CN104602267A (en
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李明菊
朱亚军
雷艺学
张云飞
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Shenzhen Coolpad Technologies Co Ltd
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Shenzhen Coolpad Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

The embodiment of the invention discloses a kind of measurement interval configuration method of different-frequency measure unlicensed spectrum and serving BSs, this method includes when the measuring signal sent on the corresponding channel of unlicensed spectrum is short control signalling formula, serving BS configures the measurement period of measurement interval to the sending cycle that M neighboring community sends measuring signal, and a measurement interval is configured in each measurement period according to preset equipping rules, wherein, measurement interval in each measurement period covers the period in the measurement period in one of sending cycle for sending measuring signal.Implement the embodiment of the present invention can measuring signal be it is short control signalling formula when improve terminal carried out in unlicensed spectrum different-frequency measure measurement result accuracy and terminal in the handling capacity of serving cell, improve the utilization rate of frequency spectrum resource.

Description

Measurement interval configuration method for pilot frequency measurement of unlicensed spectrum and serving base station
Technical Field
The invention relates to the technical field of wireless networks, in particular to a measurement interval configuration method for pilot frequency measurement of an unlicensed spectrum and a service base station.
Background
With the rapid development of wireless network technology, the current licensed spectrum cannot meet the increasing communication service demand, and in order to meet the increasing communication service demand and further improve the utilization rate of spectrum resources, the 3GPP (3rd generation Partnership Project) proposes LTE (Long term evolution) licensed assisted access technology to help the LTE network use unlicensed spectrum. When the LTE network uses unlicensed spectrum, one of the key points is to ensure that the LTE-licensed assisted access technology can coexist with the current access technology of unlicensed spectrum. Therefore, the LTE network needs an LBT (Listen Before Talk) mechanism, that is, the LTE network detects whether a channel corresponding to the unlicensed spectrum is idle Before using the unlicensed spectrum, if not, the LTE network cannot use the unlicensed spectrum, and if the channel is idle, the LTE network can use the unlicensed spectrum.
Currently, before a terminal in LTE adds an unlicensed spectrum cell as an auxiliary serving cell, the terminal needs to perform pilot frequency measurement on the unlicensed spectrum to detect Reference Signal Received Power/Quality (RSRP/RSRQ) of a channel corresponding to the unlicensed spectrum, and the basic principle of pilot frequency measurement is: when the terminal sends/receives data on carrier frequency 1, the terminal needs to measure RSRP/RSRQ on carrier frequency 2, so that the terminal adds or performs inter-frequency handover to the serving cell corresponding to carrier frequency 2. Before the terminal performs the inter-frequency measurement, the serving base station needs to perform the inter-frequency measurement configuration for the terminal, and the conventional inter-frequency measurement configuration has two modes: firstly, the measurement period of pilot frequency measurement is 40 ms; and secondly, the measurement period of the pilot frequency measurement is 80ms, and in both cases, the measurement interval of the pilot frequency measurement is 6ms, namely every 40ms or 80ms, the terminal needs to disconnect the serving cell of the carrier frequency 1, switch the receiver to the carrier frequency 2 and detect the RSRP/RSRQ of the adjacent cell on the carrier frequency 2. In LTE-licensed assisted access technology, one implementation of the measurement signal for RRM (Radio Resource Management) is a periodic short control signal, i.e. the serving base station transmits the short control signal for RRM in 2.5ms every 50 ms.
It can be seen that, since the transmission cycle of the serving base station transmitting the short control signal is 50ms and the length of the transmission time period is 2.5ms, the above conventional inter-frequency measurement configuration manner may cause a problem that the terminal cannot detect the measurement signal for RRM transmitted by the cell on the unlicensed spectrum in the LTE licensed-assisted access technology, that is, a measurement result of the inter-frequency measurement performed by the terminal on the unlicensed spectrum is inaccurate.
Disclosure of Invention
The embodiment of the invention discloses a measurement interval configuration method for pilot frequency measurement of an unlicensed spectrum and a service base station, which can improve the accuracy of a measurement result of pilot frequency measurement performed by a terminal on the unlicensed spectrum under the condition that a measurement signal is in a short control signal sending mode.
The first aspect of the embodiment of the invention discloses a measurement interval configuration method for pilot frequency measurement of an unlicensed spectrum, which comprises the following steps:
when a measurement signal transmitted on a channel corresponding to an unlicensed spectrum is in a short control signal transmission mode, a serving base station configures a measurement period of a measurement interval for measuring the unlicensed spectrum in a pilot frequency mode to M transmission periods, where the transmission period is a period in which an adjacent cell transmits the measurement signal, and M is an integer greater than or equal to 1;
the serving base station configures a measurement interval in each measurement period according to a preset configuration principle, and the measurement interval in each measurement period covers a time period for transmitting the measurement signal in one of the transmission periods in the measurement period.
In a first possible implementation manner of the first aspect of the embodiment of the present invention, the sending period is 50 ms;
each of the time periods comprises at least one time segment, each of the measurement intervals comprises at least one interval segment, one interval segment covers one time segment, the starting time of each interval segment is earlier than the starting time of the time segment covered by the interval segment, and the ending time of each interval segment is later than the ending time of the time segment covered by the interval segment;
the sum of the time lengths of all the time segments included in each time segment is 2.5ms, and the difference between the time length of each interval segment and the time length of the time segment covered by the interval segment is less than or equal to 1 ms.
With reference to the first aspect of the embodiment of the present invention or the first possible implementation manner of the first aspect of the embodiment of the present invention, in a second possible implementation manner of the first aspect of the embodiment of the present invention, the configuration principle includes:
when the terminal needs to perform pilot frequency measurement on the unlicensed spectrum and the licensed spectrum, the serving base station preferentially configures a measurement interval for pilot frequency measurement of the unlicensed spectrum, and configures the measurement interval for pilot frequency measurement of the licensed spectrum at a position which is overlapped with the measurement interval for pilot frequency measurement of the unlicensed spectrum at the least;
when the terminal needs to perform pilot frequency measurement on a plurality of unlicensed frequency spectrums, the serving base station and the neighboring base stations configure different time periods for sending measurement signals for different unlicensed frequency spectrums.
With reference to the second possible implementation manner of the first aspect of the present invention, in a third possible implementation manner of the first aspect of the present invention, the serving base station sends an inter-frequency measurement principle and a configuration manner of the measurement interval to a terminal that needs to perform inter-frequency measurement on the unlicensed spectrum, so that the terminal performs inter-frequency measurement on the unlicensed spectrum according to the inter-frequency measurement principle and the configuration manner of the measurement interval, where the inter-frequency measurement principle is an inter-frequency measurement principle when a measurement interval used for inter-frequency measurement of the unlicensed spectrum and a measurement interval used for inter-frequency measurement of the licensed spectrum overlap;
the pilot frequency measurement principle comprises the following steps:
the terminal firstly performs pilot frequency measurement on an unlicensed spectrum, and after a target time period after the pilot frequency measurement on the unlicensed spectrum is finished, the terminal switches a receiver back to a carrier frequency where a serving cell is located, where the target time period is a target time period when the terminal performs the pilot frequency measurement on the licensed spectrum, and the end time of the target time period is the end time of a measurement interval for measuring the licensed spectrum in the pilot frequency measurement, or the time length of the target time period is equal to 6 ms.
With reference to the first aspect of the embodiment of the present invention, in a fourth possible implementation manner of the first aspect of the embodiment of the present invention, the serving base station configures an aperiodic measurement interval for inter-frequency measurement of an unlicensed spectrum.
With reference to the fourth possible implementation manner of the first aspect of the embodiment of the present invention, in a fifth possible implementation manner of the first aspect of the embodiment of the present invention, a time length of the aperiodic measurement interval is equal to 6 ms;
the serving base station configures an aperiodic measurement interval for inter-frequency measurement of an unlicensed spectrum, including:
when the measurement signal transmitted on the channel corresponding to the unlicensed spectrum is a discovery reference signal which can only be transmitted when the channel is detected to be idle, the serving base station determines that one or more neighboring cells are in an idle state and the one or more neighboring cells are transmitting the measurement signal when the channel is detected to be idle;
the service base station sends a trigger instruction to the terminal through a main service cell of the terminal, wherein the trigger instruction includes a spectrum identifier of the unlicensed spectrum and is used for triggering the terminal to perform pilot frequency measurement on the unlicensed spectrum, the terminal is a terminal which needs to perform pilot frequency measurement on the unlicensed spectrum, and the terminal stores a plurality of unlicensed spectrums configured by the main service cell through Radio Resource Control (RRC) signaling, a spectrum identifier of each unlicensed spectrum in the plurality of unlicensed spectrums, and a corresponding pilot frequency measurement configuration in advance.
With reference to the fifth possible implementation manner of the first aspect of the present embodiment, in a sixth possible implementation manner of the first aspect of the present embodiment, the determining, by the serving base station, that one or more neighboring cells are in an idle state and the one or more neighboring cells are sending a measurement signal when detecting that a channel is idle includes:
the serving base station receives indication information sent by a neighboring base station, wherein the indication information is used for indicating that one or more neighboring cells of the neighboring base station are in an idle state and the one or more neighboring cells are sending measurement signals when detecting that a channel is idle;
and the serving base station determines that the one or more adjacent cells are in an idle state according to the indication information and the one or more adjacent cells are sending the measurement signals when detecting that the channel is idle.
With reference to the sixth possible implementation manner of the first aspect of the present embodiment, in a seventh possible implementation manner of the first aspect of the present embodiment, before the serving base station receives the indication information sent by the neighboring base station, the method further includes:
the serving base station sends an inquiry request to a neighboring base station, wherein the inquiry request is used for inquiring whether one or more neighboring cells of the neighboring base station are in an idle state or not and whether the one or more neighboring cells send a measurement signal or not when detecting that a channel is idle or not;
the indication information is generated by the adjacent base station in response to the query request.
With reference to any one of the fifth possible implementation manner, the sixth possible implementation manner, and the seventh possible implementation manner of the first aspect of the present invention, in an eighth possible implementation manner of the first aspect of the present invention, the trigger instruction includes a media access control MAC signaling or a downlink control information DCI signaling;
the length of the MAC signaling is N bits, and a bit display value of each bit in the MAC signaling is used for indicating whether the terminal is triggered to carry out pilot frequency measurement on a corresponding unauthorized frequency spectrum or not;
the length of the DCI signaling is L bits, and an L-bit sequence in the DCI signaling is used for indicating the terminal to perform pilot frequency measurement on an unlicensed spectrum corresponding to the L-bit sequence, where L is equal to log2N or log2(N +1) a rounded up integer, said N being equal to the number of said plurality of unlicensed frequency spectra.
A second aspect of the present invention discloses a serving base station, where the serving base station includes a first configuration module and a second configuration module, where:
the first configuration module is configured to configure, when a measurement signal sent on a channel corresponding to an unlicensed spectrum is in a short control signal sending manner, a measurement cycle of a measurement interval for measuring the unlicensed spectrum using pilot frequencies is M sending cycles, where the sending cycle is a cycle in which the measurement signal is sent by the neighboring cell, and M is an integer greater than or equal to 1;
the second configuration module is configured to configure a measurement interval in each measurement period according to a preset configuration principle, where the measurement interval in each measurement period covers a time period for transmitting the measurement signal in one of the transmission periods in the measurement period.
In a first possible implementation manner of the second aspect of the embodiment of the present invention, the sending period is 50 ms;
each of the time periods comprises at least one time segment, each of the measurement intervals comprises at least one interval segment, one interval segment covers one time segment, the starting time of each interval segment is earlier than the starting time of the time segment covered by the interval segment, and the ending time of each interval segment is later than the ending time of the time segment covered by the interval segment;
the sum of the time lengths of all the time segments included in each time segment is 2.5ms, and the difference between the time length of each interval segment and the time length of the time segment covered by the interval segment is less than or equal to 1 ms.
With reference to the second aspect of the embodiment of the present invention or the first possible implementation manner of the first aspect of the embodiment of the present invention, in a second possible implementation manner of the second aspect of the embodiment of the present invention, the configuration principle includes:
when the terminal needs to perform pilot frequency measurement on the unlicensed spectrum and the licensed spectrum, the second configuration module preferentially configures a measurement interval for pilot frequency measurement of the unlicensed spectrum, and configures the measurement interval for pilot frequency measurement of the licensed spectrum at a position where the measurement interval for pilot frequency measurement of the unlicensed spectrum is overlapped with the measurement interval for pilot frequency measurement of the unlicensed spectrum at the least;
when the terminal needs to perform inter-frequency measurement on multiple unlicensed frequency spectrums, the second configuration module and the neighboring base station configure different time periods for sending measurement signals for different unlicensed frequency spectrums.
With reference to the second possible implementation manner of the second aspect of the present embodiment, in a third possible implementation manner of the second aspect of the present embodiment, the serving base station further includes a communication module, where:
the communication module is configured to send a pilot frequency measurement principle and a configuration mode of the measurement interval to a terminal that needs to perform pilot frequency measurement on the unlicensed spectrum, so that the terminal performs pilot frequency measurement on the unlicensed spectrum according to the pilot frequency measurement principle and the configuration mode of the measurement interval, where the pilot frequency measurement principle is a pilot frequency measurement principle when a measurement interval for measuring the unlicensed spectrum in the pilot frequency and a measurement interval for measuring the licensed spectrum in the pilot frequency overlap;
the pilot frequency measurement principle comprises the following steps:
the terminal firstly performs pilot frequency measurement on an unlicensed spectrum, and after a target time period after the pilot frequency measurement on the unlicensed spectrum is finished, the terminal switches a receiver back to a carrier frequency where a serving cell is located, where the target time period is a target time period when the terminal performs the pilot frequency measurement on the licensed spectrum, and the end time of the target time period is the end time of a measurement interval for measuring the licensed spectrum in the pilot frequency measurement, or the time length of the target time period is equal to 6 ms.
With reference to the second aspect of the present embodiment, in a fourth possible implementation manner of the second aspect of the present embodiment, the serving base station further includes a third configuration module, where:
the third configuration module is configured to configure an aperiodic measurement interval for inter-frequency measurement of an unlicensed spectrum.
With reference to the fourth possible implementation manner of the second aspect of the embodiment of the present invention, in a fifth possible implementation manner of the second aspect of the embodiment of the present invention, the time length of the aperiodic measurement interval is equal to 6 ms;
the third configuration module comprises a determination submodule and a sending submodule, wherein:
the determining sub-module is configured to determine that one or more neighboring cells are in an idle state and the one or more neighboring cells are transmitting measurement signals when detecting that a channel is idle, when a measurement signal transmitted on a channel corresponding to an unlicensed spectrum is a discovery reference signal that can only be transmitted when detecting that the channel is idle;
the sending submodule is configured to send a trigger instruction to the terminal through a main serving cell of the terminal, where the trigger instruction includes a spectrum identifier of the unlicensed spectrum and is configured to trigger the terminal to perform pilot frequency measurement on the unlicensed spectrum, the terminal is a terminal that needs to perform pilot frequency measurement on the unlicensed spectrum, and the terminal stores, in advance, a plurality of unlicensed spectrums configured by the main serving cell through radio resource control RRC signaling, a spectrum identifier of each unlicensed spectrum in the plurality of unlicensed spectrums, and a corresponding pilot frequency measurement configuration.
With reference to the fifth possible implementation manner of the second aspect of the embodiment of the present invention, in a sixth possible implementation manner of the second aspect of the embodiment of the present invention, the determining sub-module includes a receiving sub-unit and a determining sub-unit, where:
the receiving subunit is configured to receive indication information sent by a neighboring base station, where the indication information is used to indicate that one or more neighboring cells of the neighboring base station are in an idle state and the one or more neighboring cells are sending measurement signals when detecting that a channel is idle;
the determining subunit is configured to determine, according to the indication information, that the one or more neighboring cells are in an idle state and the one or more neighboring cells are transmitting measurement signals when detecting that a channel is idle.
With reference to the sixth possible implementation manner of the second aspect of the embodiment of the present invention, in a seventh possible implementation manner of the second aspect of the embodiment of the present invention, the determining sub-module further includes a sending sub-unit, where:
the sending subunit is configured to send an inquiry request to the neighboring base station, where the inquiry request is used to inquire whether one or more neighboring cells of the neighboring base station are in an idle state and whether the one or more neighboring cells send a measurement signal when detecting that a channel is idle;
the indication information is generated by the adjacent base station in response to the query request.
With reference to any one of the fifth possible implementation manner, the sixth possible implementation manner, and the seventh possible implementation manner of the second aspect of the present invention, in an eighth possible implementation manner of the second aspect of the present invention, the trigger instruction includes a media access control MAC signaling or a downlink control information DCI signaling;
the length of the MAC signaling is N bits, and a bit display value of each bit in the MAC signaling is used for indicating whether the terminal is triggered to carry out pilot frequency measurement on a corresponding unauthorized frequency spectrum or not;
the length of the DCI signaling is L bits, and an L-bit sequence in the DCI signaling is used for indicating the terminal to perform pilot frequency measurement on an unlicensed spectrum corresponding to the L-bit sequence, where L is equal to log2N or log2(N +1) a rounded up integer, said N being equal to the number of said plurality of unlicensed frequency spectra.
In the embodiment of the present invention, when the measurement signal transmitted on the channel corresponding to the unlicensed spectrum is in a short control signal transmission mode, the serving base station configures a measurement cycle of a measurement interval for measuring the unlicensed spectrum using pilot frequencies as a transmission cycle of the measurement signal transmitted by M neighboring cells, and configures a measurement interval in each measurement cycle according to a preset configuration principle, where the measurement interval in each measurement cycle covers a time period for transmitting the measurement signal in one of the transmission cycles in the measurement cycle. By implementing the embodiment of the invention, the accuracy of the measurement result of the pilot frequency measurement of the terminal on the unauthorized frequency spectrum and the throughput of the terminal in the service cell can be improved when the measurement signal is in a short control signal sending mode, and the utilization rate of frequency spectrum resources is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flowchart of a measurement interval configuration method for inter-frequency measurement of an unlicensed spectrum according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of an aperiodic measurement interval configuration method for inter-frequency measurement of an unlicensed spectrum according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a measurement interval for inter-frequency measurement of an unlicensed spectrum according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another measurement interval for inter-frequency measurement of unlicensed spectrum according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a serving base station configuring a measurement interval for inter-frequency measurement of a licensed spectrum at a position with least overlapping with a measurement interval for inter-frequency measurement of an unlicensed spectrum, according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a radio resource control RRC signaling according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a MAC signaling disclosed in an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a DCI signaling disclosed in an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a serving base station according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another serving base station disclosed in the embodiment of the present invention;
fig. 11 is a schematic structural diagram of another serving base station disclosed in the embodiment of the present invention;
FIG. 12 is a schematic structural diagram of a determination submodule disclosed in an embodiment of the present invention;
fig. 13 is a schematic structural diagram of another determination submodule disclosed in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a measurement interval configuration method for pilot frequency measurement of an unlicensed spectrum and a service base station, which can improve the accuracy of a measurement result of pilot frequency measurement performed by a terminal on the unlicensed spectrum and the throughput of the terminal in a service cell, and improve the utilization rate of spectrum resources. The following are detailed below.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for configuring a measurement interval for inter-frequency measurement of an unlicensed spectrum according to an embodiment of the present invention. As shown in fig. 1, the method may include the steps of:
s101, when the measurement signal transmitted on the channel corresponding to the unlicensed spectrum is in a short control signal transmission mode, the serving base station configures a measurement period of a measurement interval for inter-frequency measurement of the unlicensed spectrum to M transmission periods.
In the embodiment of the present invention, the sending period is a period in which a neighboring cell on an unlicensed spectrum sends a measurement signal, where M is an integer greater than or equal to 1.
S102, the service base station configures a measurement interval in each measurement period according to a preset configuration principle.
In the embodiment of the present invention, the measurement interval in each measurement period covers a time period for transmitting a measurement signal in one of the transmission periods in the measurement period.
As an alternative embodiment, the transmission period for the neighboring cell to transmit the measurement signal may be 50ms, and the neighboring cell may transmit the measurement signal in one transmission period in the following two ways: firstly, the adjacent cell transmits the measurement signal in continuous subframes, that is, in one transmission period, a time period for transmitting the measurement signal includes a time segment and the time length of the time segment (time segment) may be 2.5 ms; secondly, the neighboring cell transmits the measurement signal in non-consecutive subframes, that is, in one transmission period, the number of time segments included in the time period for transmitting the measurement signal is an integer greater than 1, for example, the number of time segments included in the time period is 3, and the sum of the time lengths of all the time segments included in the time period may be 2.5 ms. The optimal mode for sending the measurement signal in one sending period by the adjacent cell is the first mode, so that the time for switching the carrier frequency of the receiver of the terminal can be reduced, and the throughput of the terminal is improved.
In the embodiment of the present invention, each measurement interval may include at least one interval segment, and each measurement interval includes a number of interval segments equal to a number of time segments included in a time period covered by the measurement interval for transmitting a measurement signal, one interval segment covers one time segment, a start time of each interval segment is earlier than a start time of the time segment covered by the interval segment and an end time of each interval segment is later than an end time of the time segment covered by the interval segment, where a length of time that an interval segment covers more than the time segment covered by the interval segment is a time for a terminal receiver to switch from one carrier frequency to another carrier frequency. Namely:
when the adjacent cell transmits the measurement signal in consecutive subframes, the serving base station selects one of the transmission cycles of each measurement cycle (the one transmission cycle is any one of the transmission cycles and the time period in the one transmission cycle includes one time segment), configures a measurement interval (the measurement interval covers the time period in the one transmission cycle) in the one transmission cycle and the measurement interval includes one interval segment, the start time of the measurement interval is earlier than the start time of the time period covered by the measurement interval and the end time of the measurement interval is later than the end time of the time period covered by the measurement interval, and the difference between the time length of the measurement interval and the time length of the time period is less than or equal to 1ms, for example, when the time length of the time period covered by the measurement interval is 2.5ms, the time length of the measurement interval is greater than 2.5ms and less than or equal to 3.5ms, the length of time during which the start time of the measurement interval occurs earlier than the start time of the time period it covers may be (l)gap-lscs) /2 wherein lgapIs the length of the measurement interval andscsthe time length of the time period covered by the measurement interval is not limited in the embodiment of the present invention;
when the adjacent cell transmits the measuring signal in discontinuous sub-frames, the service base station selects one of the transmission periods of each measuring period (the one transmission period is any one of the transmission periods in the measuring period, and the time period in the one transmission period comprises a plurality of time segments), and configures a measuring interval in the one transmission period, the measurement interval comprises a plurality of interval segments and the number of interval segments comprised by the measurement interval is equal to the number of time segments comprised by the time period covered by the measurement interval, one interval segment covers one time segment and the start time of each interval segment is earlier than the start time of the time segment covered by the interval segment, the end time of each interval segment is later than the end time of the time segment of the interval segment, wherein the difference between the time length of each interval segment and the time length of the time segment covered by the interval segment is less than or equal to 1 ms.
In the embodiment of the invention, when the adjacent cells transmit the measuring signals in the discontinuous sub-frames and the interval between the adjacent time segments is short, if the interval between adjacent time segments is less than or equal to 1ms, the serving base station may select one of the transmission periods of the measurement period and configure a measurement interval in the one transmission period, the measurement interval comprises one interval segment and the start time of the measurement interval (interval segment) is earlier than the start time of the first time segment in the one of the transmission periods and the end time of the measurement interval (interval segment) is later than the end time of the last time segment in the one of the transmission periods, therefore, the time for switching the terminal receiver from one carrier frequency to another carrier frequency can be reduced, the communication time of the terminal and the service base station is prolonged, and the throughput of the terminal is improved.
In the embodiment of the present invention, for example, when the neighboring cells transmit the measurement signals in consecutive subframes, if M is equal to 1, the time length of the time period for transmitting the measurement signal is 2.5ms, and the time length of the measurement interval configured by the serving base station is 3ms, the measurement interval of the inter-frequency measurement unlicensed spectrum configured by the serving base station may be as shown in fig. 3, where fig. 3 is a schematic structural diagram of the measurement interval of the inter-frequency measurement unlicensed spectrum disclosed in the embodiment of the present invention. As shown in fig. 3, a in fig. 3 indicates that the neighboring cell transmits the measurement signal in a time period of every 50ms and 2.5ms in time length, B in fig. 3 indicates that every 50ms, the serving base station configures a measurement interval for the terminal, and the measurement interval covers the time period for transmitting the measurement signal, the start time of the measurement interval occurs at the first 0.25ms of the start time of the time period covered by the serving base station and the end time of the measurement interval occurs at the last 0.25ms of the end time of the time period covered by the serving base station.
In this embodiment of the present invention, for example, when an adjacent cell transmits a measurement signal in a discontinuous subframe, if M is equal to 1, a time period for transmitting the measurement signal in one transmission period includes 3 time segments, a time length of each time segment is 1ms, and 0.5ms, a measurement interval including 3 interval segments is configured in one measurement period by a serving base station, and a time length of each interval segment is 2ms, and 1ms, respectively, a measurement interval for measuring an unlicensed spectrum by an inter-frequency configured by the serving base station may be as shown in fig. 4, where fig. 4 is a schematic structural diagram of another measurement interval for measuring an unlicensed spectrum by an inter-frequency disclosed in this embodiment of the present invention. As shown in fig. 4, a in fig. 4 indicates that the neighboring cells transmit the measurement signal in 3 time segments of 1ms, 1ms and 0.5ms in length every 50ms, B in fig. 4 indicates that every 50ms, the serving base station configures a measurement interval for the terminal and the measurement interval includes 3 interval segments, and different interval segments cover different time segments for transmitting the measurement signal, and in one measurement period, the start time of a first interval segment of the measurement interval occurs 0.5ms before the start time of the time segment covered by the first interval segment and the end time of the first interval segment occurs 0.5ms after the end time of the time segment covered by the first interval segment, the start time of a second interval segment of the measurement interval occurs 0.5ms before the start time of the time segment covered by the second interval segment and the end time of the second interval segment occurs 0.5ms after the end time of the time segment covered by the second interval segment, the start time of the third interval segment of the measurement interval occurs 0.25ms before the start time of the time segment it covers and the end time of this third interval segment occurs 0.25ms after the end time of the time segment it covers.
As an alternative implementation, the above configuration principle may include, but is not limited to, the following principles:
firstly, when a terminal needs to perform pilot frequency measurement on an unlicensed spectrum and a licensed spectrum, a serving base station preferentially configures a measurement interval for pilot frequency measurement of the unlicensed spectrum, and configures the measurement interval for pilot frequency measurement of the licensed spectrum at a position which is overlapped with the measurement interval for pilot frequency measurement of the unlicensed spectrum at the least;
secondly, when the terminal needs to perform pilot frequency measurement on a plurality of unlicensed spectrums, different time periods for sending measurement signals are configured for different unlicensed spectrums by the serving base station and the adjacent base stations.
In the embodiment of the present invention, when the terminal needs to perform inter-frequency measurement on the unlicensed spectrum and the licensed spectrum and the measurement period of the measurement interval for inter-frequency measurement of the unlicensed spectrum is 50ms, for example, it is assumed that the time of occurrence of the measurement interval for inter-frequency measurement of the unlicensed spectrum is (50n) ms to (50n +3ms), where n is 0, 1, 2, 3 … …, the measurement period of the measurement interval for inter-frequency measurement of the licensed spectrum is 40ms and the time length of the measurement interval for inter-frequency measurement of the licensed spectrum is 6ms, the serving base station only needs to configure the measurement interval for inter-frequency measurement of the licensed spectrum at a position that does not overlap with the measurement interval for inter-frequency measurement of the unlicensed spectrum within a least common multiple 200ms of 40ms and 50ms, as shown in fig. 5, where fig. 5 is a serving base station disclosed in the embodiment of the present invention that configures the measurement interval for inter-frequency measurement of the licensed spectrum at a position that does not overlap with the measurement interval for inter-frequency measurement of the unlicensed spectrum A schematic of the structure of the location where the quantity intervals overlap minimally. As shown in fig. 5, the serving base station cannot allocate measurement intervals for the inter-frequency measurement licensed spectrum for the 0 th to 3 th ms, the 10 th to 13 th ms, the 20 th to 23 th ms, and the 30 th to 33 th ms within the 0 th to 40 th ms of the first 200ms, cannot allocate measurement intervals for the inter-frequency measurement licensed spectrum for the 40 th to 43 th ms, the 50 th to 53 th ms, the 60 th to 63 th ms, and the 70 th to 73 th ms within the 40 th to 80 th ms of the first 200ms (not shown in fig. 5), cannot allocate measurement intervals for the inter-frequency measurement licensed spectrum for the 80 th to 83 th ms, the 90 th to 93 th ms, the 100 th to 103 th ms, and the 110 th to 113 th ms within the 80 th to 120 th ms of the first 200ms (not shown in fig. 5), and cannot allocate measurement intervals for the inter-frequency measurement licensed spectrum for the 120 th to 160ms, the 130 th to 150 th to 133 th to 140 th ms within the 120 th to 120 th ms of the first 200ms (not shown in fig. 5 Not shown in (b) measurement intervals (not shown in fig. 5) for inter-frequency measurement of the licensed spectrum cannot be configured within the 160ms to 163ms, the 170ms to 173ms, the 180ms to 183ms, and the 190ms to 193ms of the 160ms to 200ms of the first 200 ms.
As an alternative implementation, after completing S102, the serving base station may further perform the following operations:
and the service base station sends the pilot frequency measurement principle and the configuration mode of the measurement interval to the terminal needing to carry out pilot frequency measurement on the unlicensed spectrum.
In the embodiment of the present invention, the configuration modes of the measurement intervals include a configuration mode of a measurement period of the measurement intervals and a configuration mode of the number, the position and the time length of interval segments of the measurement intervals.
In the embodiment of the present invention, the serving base station sends the pilot frequency measurement principle and the configuration mode of the measurement interval to the terminal that needs to perform pilot frequency measurement on the unlicensed spectrum, so that the terminal performs pilot frequency measurement on the unlicensed spectrum according to the received pilot frequency measurement principle and the configuration mode of the measurement interval, where the pilot frequency measurement principle is the pilot frequency measurement principle when the measurement interval for measuring the unlicensed spectrum in the pilot frequency and the measurement interval for measuring the licensed spectrum in the pilot frequency overlap.
In the embodiment of the present invention, when the measurement interval for pilot frequency measurement of the unlicensed spectrum overlaps with the measurement interval for pilot frequency measurement of the licensed spectrum, the terminal performs pilot frequency measurement according to a pilot frequency measurement principle sent by the serving base station, and the pilot frequency measurement principle may include, but is not limited to, the following pilot frequency measurement principles: the terminal firstly performs pilot frequency measurement on the unlicensed spectrum, and after a target time period after the pilot frequency measurement is completed on the unlicensed spectrum, the terminal switches the receiver back to the carrier frequency where the serving cell of the terminal is located, where the target time period is a target time period in which the terminal performs pilot frequency measurement on the licensed spectrum, and an end time of the target time period is an end time of a measurement interval for measuring the licensed spectrum in the pilot frequency measurement, or a time length of the target time period is equal to 6 ms. Namely: after the terminal performs pilot frequency measurement on the unlicensed spectrum, the terminal performs pilot frequency measurement on the licensed spectrum within the remaining time length of a measurement interval for measuring the licensed spectrum by the pilot frequency, and if the measurement result of the pilot frequency measurement performed on the licensed spectrum within the remaining time length meets the required measurement result, the terminal switches the receiver back to the carrier frequency where the serving cell of the terminal is located after the remaining time length is finished; if the measurement result of performing inter-frequency measurement on the authorized spectrum in the remaining time length does not satisfy the required measurement result, the terminal may extend the remaining time length, for example, if the remaining time length is 3ms, if the terminal has been previously set to a sleep state of discontinuous reception, the terminal continues to perform inter-frequency measurement on the authorized spectrum within 3ms after the end of the measurement interval for measuring the authorized spectrum in the inter-frequency measurement, and when the measurement result of performing inter-frequency measurement on the authorized spectrum by the terminal satisfies the required measurement result, the terminal switches the receiver back to the carrier frequency on which the serving cell of the terminal is located.
In the embodiment of the invention, the measurement interval for pilot frequency measurement of the unlicensed spectrum in the LTE licensed assisted access technology can be configured by the serving base station through RRC signaling. Since the measurement signal for RRM in the LTE licensed-assisted access technology is transmitted periodically, the configuration manner of the measurement interval for inter-frequency measurement of the unlicensed spectrum may be the same for all neighboring cells on one unlicensed spectrum.
As an optional implementation, the serving base station may further perform the following operations:
the serving base station configures an aperiodic measurement interval for inter-frequency measurement of the unlicensed spectrum.
Optionally, the time length of the aperiodic measurement interval is equal to 6 ms.
Optionally, a flow of configuring, by the serving base station, an aperiodic measurement interval for inter-frequency measurement of the unlicensed spectrum may be as shown in fig. 2, where fig. 2 is a schematic flow diagram of a method for configuring an aperiodic measurement interval for inter-frequency measurement of the unlicensed spectrum disclosed in the embodiment of the present invention. As shown in fig. 2, the aperiodic measurement interval configuration method for inter-frequency measurement of unlicensed spectrum may include the following steps:
s201, when the measurement signal transmitted on the channel corresponding to the unlicensed spectrum is a discovery reference signal that can only be transmitted when it is detected that the channel is idle, the serving base station determines that one or more neighboring cells are in an idle state and the one or more neighboring cells are transmitting the measurement signal when it is detected that the channel is idle.
In the embodiment of the present invention, if there are multiple neighboring cells on an unlicensed spectrum, because interference conditions around each neighboring cell are different, channel busy/idle states detected by each neighboring cell are also different, and only when a channel is idle, the neighboring cell can send a measurement signal, so each neighboring cell may send the measurement signal at a different time, and in order to be able to send the measurement signal when the channel is idle, the maximum channel occupation time of each neighboring cell needs to be greater than the sending time of the measurement signal by 6 ms.
S202, the service base station sends a trigger instruction to the terminal through the main service cell of the terminal.
In the embodiment of the present invention, the trigger instruction includes a spectrum identifier of an unlicensed spectrum and is used to trigger the terminal to perform pilot frequency measurement on the unlicensed spectrum, where the terminal is a terminal that needs to perform pilot frequency measurement on the unlicensed spectrum corresponding to the spectrum identifier.
In the embodiment of the present invention, since the serving base station configures different aperiodic measurement intervals for the pilot frequency measurement of the unlicensed spectrum for different neighboring cells, the unlicensed spectrum that the terminal needs to perform the pilot frequency measurement and the neighboring cells that need to be measured on each unlicensed spectrum, where a main serving cell of the terminal is configured by an RRC signaling, are pre-selected in the terminal, that is, the RRC signaling includes, but is not limited to, a plurality of unlicensed spectrums, a spectrum identifier of each unlicensed spectrum in the plurality of unlicensed spectrums, and a corresponding pilot frequency measurement configuration, where the pilot frequency measurement configuration may include a pilot frequency measurement identifier corresponding to each unlicensed spectrum, a trigger condition for the terminal to report a pilot frequency measurement result, a physical cell identifier of the neighboring cell that the terminal needs to measure on each unlicensed spectrum in the plurality of unlicensed spectrums, and the like. And the RRC signaling may be as shown in fig. 6, fig. 6 is a schematic structural diagram of a radio resource control RRC signaling disclosed in the embodiment of the present invention, as shown in fig. 6, an unlicensed spectrum number (e.g., 0, 1, 2, and 3 … …) in a table in fig. 6 is used to distinguish different unlicensed spectrums, MeasID represents a pilot measurement identifier corresponding to the unlicensed spectrum, MeasObject represents a measurement object (i.e., the unlicensed spectrum) for the terminal to perform pilot measurement, Event represents a trigger condition for the terminal to report a measurement result of the pilot measurement performed in the unlicensed spectrum, PCI represents a physical cell identifier of an adjacent cell that the terminal needs to measure in an unlicensed spectrum, where the unlicensed spectrum number can facilitate the serving base station to issue a trigger instruction including a spectrum identifier of the unlicensed spectrum that the terminal needs to perform pilot measurement to the terminal, and physical cell identifiers of adjacent cells corresponding to different unlicensed spectrums may be the same, i.e. multiple neighboring cells on different unlicensed spectrum may use the same physical cell identity.
As an optional embodiment, when the neighboring cells are not in the same base station as the serving cell of the terminal, the specific way for the serving base station to determine that one or more neighboring cells are in an idle state and that the one or more neighboring cells are transmitting the measurement signal when detecting that the channel is idle may be:
the serving base station receives indication information sent by the adjacent base station, wherein the indication information is used for indicating that one or more adjacent cells of the adjacent base station are in an idle state and the one or more adjacent cells are sending measurement signals when detecting that a channel is idle;
and the serving base station determines that one or more adjacent cells are in an idle state according to the indication information and the one or more adjacent cells are transmitting the measurement signal when detecting that the channel is idle.
As another optional embodiment, when the neighboring cells are not in the same base station as the serving cell of the terminal, the specific way for the serving base station to determine that one or more neighboring cells are in an idle state and that the one or more neighboring cells are transmitting the measurement signal when detecting that the channel is idle may be:
the serving base station sends an inquiry request to the adjacent base station, wherein the inquiry request is used for inquiring whether one or more adjacent cells of the adjacent base station are in an idle state or not and whether the one or more adjacent cells send a measurement signal or not when detecting that a channel is idle or not;
the serving base station receives indication information generated by the adjacent base station in response to the query request, wherein the indication information is used for indicating that one or more adjacent cells of the adjacent base station are in an idle state and the one or more adjacent cells are transmitting measurement signals when detecting that a channel is idle;
and the serving base station determines that one or more adjacent cells are in an idle state according to the indication information and the one or more adjacent cells are transmitting the measurement signal when detecting that the channel is idle.
As an optional implementation manner, the triggering instruction may be a MAC instruction, and the length of the MAC instruction is N bits, where N is equal to the number of multiple unlicensed frequency spectrums, configured for the terminal by the primary serving cell of the terminal through RRC signaling, where the terminal needs to perform pilot frequency measurement, and a bit display value of each bit in the MAC instruction is used to indicate whether to trigger the terminal to perform pilot frequency measurement on the corresponding unlicensed frequency spectrum. In this embodiment of the present invention, the MAC instruction may be as shown in fig. 7, where fig. 7 is a schematic structural diagram of a MAC signaling disclosed in the embodiment of the present invention, and as shown in fig. 7, from right to left, a 0 th position represents a trigger state of a terminal for pilot frequency measurement of an unlicensed spectrum with an unlicensed spectrum number of 0, a 1 st position represents a trigger state of a terminal for pilot frequency measurement of an unlicensed spectrum with an unlicensed spectrum number of 1, and so on, and a bit display value of an m-th position of "1" indicates that a serving base station triggers the terminal to perform pilot frequency measurement on an unlicensed spectrum with an unlicensed spectrum number of m, and bit display values of other positions of "0" indicates that the serving base station does not trigger the terminal to perform pilot frequency measurement on other unlicensed spectrums.
As another optional embodiment, the trigger instruction may be a DCI instruction, where the DCI instruction has a length of L, and an L-bit sequence in the DCI signaling is used to instruct the terminal to perform inter-frequency measurement on an unlicensed spectrum corresponding to the L-bit sequence, where L is equal to log2N or log2(N +1) is an integer rounded up and N is equal to the number of a plurality of unlicensed frequency spectrums which are configured for the terminal by the main serving cell of the terminal through RRC signaling and are required to be subjected to pilot frequency measurement by the terminal. If an L-bit sequence is required to indicate that inter-frequency measurements for any unlicensed spectrum by the terminal are not to be triggered, then L equals log when N equals 2 raised to an integer power2(N +1) integers rounded up, L being equal to log when N is not equal to the power of an integer of 22And N is an integer rounded upwards. L equals log if no L-bit sequence is required to indicate that inter-frequency measurements for any unlicensed spectrum by the terminal are not to be triggered2And N is an integer rounded upwards. For example, assuming that N is equal to 3 and an L-bit sequence is required to indicate that inter-frequency measurement for any unlicensed spectrum by a terminal is not triggered, the DCI instruction is 2 bits long, i.e., L is equal to log2N is an integer rounded up, the DCI instruction may be as shown in fig. 8, and fig. 8 is a schematic structural diagram of a DCI signaling disclosed in the embodiment of the present invention, where "00" indicates that the serving base station triggers the terminal to perform pilot frequency measurement on the unlicensed spectrum with the unlicensed spectrum number of 0, "01" indicates that the serving base station triggers the terminal to perform pilot frequency measurement on the unlicensed spectrum with the unlicensed spectrum number of 1, "10" indicates that the serving base station triggers the terminal to perform pilot frequency measurement on the unlicensed spectrum with the unlicensed spectrum number of 2, and "11" indicates that the serving base station does not trigger the terminal to perform pilot frequency measurement on any unlicensed spectrum.
In the embodiment of the present invention, when a measurement signal sent on a channel corresponding to an unlicensed spectrum is a short control signal sending mode, a serving base station configures a measurement cycle of a measurement interval for measuring the unlicensed spectrum using pilot frequencies as a sending cycle of sending the measurement signal by M neighboring cells, and configures a measurement interval in each measurement cycle according to a preset configuration principle, where the measurement interval in each measurement cycle covers a time period for sending the measurement signal in one of the sending cycles in the measurement cycle; and the serving base station may further configure an aperiodic measurement interval for inter-frequency measurement of the unlicensed spectrum, that is, when the measurement signal sent on the channel corresponding to the unlicensed spectrum is a discovery reference signal sent when it is detected that the channel is idle, the serving base station first determines that one or more neighboring cells are in an idle state and the one or more neighboring cells are sending a detection signal when detecting the idle state, and then sends, to the terminal, a trigger instruction that includes a spectrum identifier of the unlicensed spectrum and is used for triggering the terminal to perform inter-frequency measurement on the corresponding unlicensed spectrum, through a primary serving cell of the terminal. By implementing the embodiment of the invention, the service base station can configure the corresponding measurement interval for the pilot frequency measurement unauthorized frequency spectrum for the terminal according to the sending mode of the measurement signal, so that the accuracy of the measurement result of the pilot frequency measurement performed by the terminal on the unauthorized frequency spectrum and the throughput of the terminal in a service cell are improved, and the utilization rate of frequency spectrum resources is improved.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a serving base station according to an embodiment of the present invention. As shown in fig. 9, the serving base station 900 may include a first configuration module 901 and a second configuration module 902, where:
the first configuring module 901 is configured to configure a measurement cycle of a measurement interval for inter-frequency measurement of an unlicensed spectrum to M transmission cycles when a measurement signal transmitted on a channel corresponding to the unlicensed spectrum is in a short control signal transmission mode.
In the embodiment of the present invention, the sending period is a period in which the neighboring cell sends the measurement signal, where M is an integer greater than or equal to 1.
The second configuration module 902 is configured to configure a measurement interval in each measurement period according to a preset configuration principle.
In the embodiment of the present invention, the measurement interval in each measurement period covers a time period for transmitting a measurement signal in one of the transmission periods in the measurement period.
As an optional implementation manner, each time period includes at least one time segment, each measurement interval includes at least one interval segment, that is, the number of interval segments in each measurement interval is equal to the number of time segments in the time period covered by the measurement interval, and one interval segment covers one time segment, the start time of each interval segment is earlier than the start time of the time segment covered by the interval segment, and the end time of each interval segment is later than the end time of the time segment covered by the interval segment, the sum of the time lengths of all the time segments included in each time period is 2.5ms, and the difference between the time length of each interval segment and the time length of the time segment covered by the interval segment is less than or equal to 1ms, which is not limited by the embodiments of the present invention.
As an alternative implementation, the above configuration principle may include, but is not limited to, the following principles:
when a terminal needs to perform pilot frequency measurement on an unlicensed spectrum and a licensed spectrum, a second configuration module 902 preferentially configures a measurement interval for pilot frequency measurement of the unlicensed spectrum, and configures the measurement interval for pilot frequency measurement of the licensed spectrum at a position where the measurement interval overlaps with the measurement interval for pilot frequency measurement of the unlicensed spectrum least;
second, when the terminal needs to perform inter-frequency measurement on multiple unlicensed frequency spectrums, the second configuration module 902 and the neighboring base stations configure different time periods for sending measurement signals for different unlicensed frequency spectrums.
By implementing the embodiment of the invention, the accuracy of the measurement result of the pilot frequency measurement of the terminal on the unauthorized frequency spectrum and the throughput of the terminal in the service cell can be improved under the condition that the measurement signal is the short control signal transmission mode, and the utilization rate of frequency spectrum resources is improved.
Referring to fig. 10, fig. 10 is a schematic structural diagram of another serving base station according to an embodiment of the present invention. As shown in fig. 10, the serving base station 1000 may include a first configuration module 1001, a second configuration module 1002, and a communication module 1003, wherein:
the first configuration module 1001 is configured to configure a measurement cycle of a measurement interval for inter-frequency measurement of an unlicensed spectrum to M transmission cycles when a measurement signal transmitted on a channel corresponding to the unlicensed spectrum is in a short control signal transmission mode.
In the embodiment of the present invention, the sending period is a period in which the neighboring cell sends the measurement signal, where M is an integer greater than or equal to 1.
The second configuration module 1002 is configured to configure a measurement interval in each measurement period according to a preset configuration principle.
In the embodiment of the present invention, the measurement interval in each measurement period covers a time period for transmitting a measurement signal in one of the transmission periods in the measurement period.
As an optional implementation manner, each time period includes at least one time segment, each measurement interval includes at least one interval segment, that is, the number of interval segments in each measurement interval is equal to the number of time segments in the time period covered by the measurement interval, and one interval segment covers one time segment, the start time of each interval segment is earlier than the start time of the time segment covered by the interval segment, and the end time of each interval segment is later than the end time of the time segment covered by the interval segment, the sum of the time lengths of all the time segments included in each time period is 2.5ms, and the difference between the time length of each interval segment and the time length of the time segment covered by the interval segment is less than or equal to 1ms, which is not limited by the embodiments of the present invention.
As an alternative implementation, the above configuration principle may include, but is not limited to, the following principles:
when a terminal needs to perform pilot frequency measurement on an unlicensed spectrum and a licensed spectrum, a second configuration module 1002 preferentially configures a measurement interval for pilot frequency measurement of the unlicensed spectrum, and configures the measurement interval for pilot frequency measurement of the licensed spectrum at a position where the measurement interval overlaps with the measurement interval for pilot frequency measurement of the unlicensed spectrum least;
second, when the terminal needs to perform inter-frequency measurement on multiple unlicensed frequency spectrums, the second configuration module 1002 and the neighboring base station configure different time periods for sending measurement signals for different unlicensed frequency spectrums.
The communication module 1003 is configured to send the pilot frequency measurement principle and the configuration mode of the measurement interval to a terminal that needs to perform pilot frequency measurement on an unlicensed spectrum, so that the terminal performs pilot frequency measurement on the unlicensed spectrum according to the pilot frequency measurement principle and the configuration mode of the measurement interval. The pilot frequency measurement principle is a pilot frequency measurement principle when a measurement interval for pilot frequency measurement of an unlicensed spectrum overlaps with a measurement interval for pilot frequency measurement of a licensed spectrum, and the pilot frequency measurement principle includes, but is not limited to, the following pilot frequency measurement principles: the terminal firstly performs pilot frequency measurement on an unlicensed spectrum, and after a target time period after the pilot frequency measurement on the unlicensed spectrum is finished, the terminal switches a receiver back to a carrier frequency where a serving cell is located, wherein the target time period is a target time period when the terminal performs the pilot frequency measurement on the licensed spectrum, and the end time of the target time period is the end time of a measurement interval for measuring the licensed spectrum by the pilot frequency, or the time length of the target time period is equal to 6 ms.
By implementing the embodiment of the invention, the service base station can configure the periodic measurement interval for the terminal when the measurement signal is in a short control signal transmission mode, so that the terminal can perform pilot frequency measurement on the corresponding unauthorized frequency spectrum according to the periodic measurement interval transmitted by the service base station, the accuracy of the measurement result of the pilot frequency measurement performed by the terminal on the unauthorized frequency spectrum and the throughput of the terminal in a service cell are improved, and the utilization rate of frequency spectrum resources is improved.
Referring to fig. 11, fig. 11 is a schematic structural diagram of another serving base station according to an embodiment of the present invention. As shown in fig. 11, the serving base station 1100 may include a third configuration module 1101, wherein:
the third configuration module 1101 is configured to configure an aperiodic measurement interval for inter-frequency measurement of an unlicensed spectrum.
Optionally, the time length of the aperiodic measurement interval may be 6 ms.
As an alternative implementation, as shown in fig. 11, the third configuration module 1101 may include a determination sub-module 11011 and a sending sub-module 11012, where:
the determining sub-module 11011 is configured to determine that one or more neighboring cells are in an idle state and that one or more neighboring cells are measuring signals when detecting that a channel is idle, when a measurement signal transmitted on a channel corresponding to the unlicensed spectrum is a discovery reference signal that can only be transmitted when detecting that the channel is idle.
The sending sub-module 11012 is configured to send a trigger instruction to the terminal through a main serving cell of the terminal, where the trigger instruction includes a spectrum identifier of an unlicensed spectrum and is used to trigger the terminal to perform pilot frequency measurement on a corresponding unlicensed spectrum, and the terminal is a terminal that needs to perform pilot frequency measurement on the unlicensed spectrum, and a plurality of unlicensed spectrums configured by the main serving cell through radio resource control RRC signaling, a spectrum identifier of each unlicensed spectrum in the plurality of unlicensed spectrums and a corresponding pilot frequency measurement configuration are stored in the terminal in advance, where the pilot frequency measurement configuration may include a pilot frequency measurement identifier corresponding to each unlicensed spectrum, a trigger condition for the terminal to report a pilot frequency measurement result, and a physical cell identifier of an adjacent cell that the terminal needs to measure on each unlicensed spectrum in the plurality of unlicensed spectrums.
As an alternative implementation manner, the determining submodule 11011 may be as shown in fig. 12, and fig. 12 is a schematic structural diagram of a determining submodule disclosed in an embodiment of the present invention. As shown in fig. 12, the determining sub-module 11011 may include a receiving sub-unit 1201 and a determining sub-unit 1202, wherein:
the receiving subunit 1201 is configured to receive indication information sent by the neighboring base station, where the indication information is used to indicate that one or more neighboring cells of the neighboring base station are in an idle state and the one or more neighboring cells are sending measurement signals when detecting that a channel is idle.
The determining subunit 1202 is configured to determine, according to the indication information, that one or more neighboring cells are in an idle state and the one or more neighboring cells are transmitting measurement signals when detecting that a channel is idle.
As another optional implementation, the determining sub-module 11011 may also be as shown in fig. 13, where fig. 13 is a schematic structural diagram of another determining sub-module disclosed in the embodiment of the present invention. As shown in fig. 13, the determining sub-module 11011 may include a transmitting sub-unit 1301, a receiving sub-unit 1302, and a determining sub-unit 1303, wherein:
the sending subunit 1301 is configured to send, to the neighboring base station, an inquiry request, where the inquiry request is used to inquire whether one or more neighboring cells of the neighboring base station are in an idle state and whether the one or more neighboring cells send a measurement signal when detecting that a channel is idle.
The receiving sub-unit 1302 is configured to receive indication information generated by the neighboring base station in response to the query request, where the indication information is used to indicate that one or more neighboring cells of the neighboring base station are in an idle state and the one or more neighboring cells are transmitting measurement signals when detecting that a channel is idle.
The determining subunit 1303 is configured to determine, according to the indication information, that one or more neighboring cells are in an idle state and that the one or more neighboring cells are transmitting measurement signals when detecting that a channel is idle.
As an optional implementation manner, the triggering instruction may be a MAC instruction, and the length of the MAC instruction is N bits, where N is equal to the number of multiple unlicensed frequency spectrums, configured for the terminal by the primary serving cell of the terminal through RRC signaling, where the terminal needs to perform pilot frequency measurement, and a bit display value of each bit in the MAC instruction is used to indicate whether to trigger the terminal to perform pilot frequency measurement on the corresponding unlicensed frequency spectrum.
As another optional embodiment, the trigger instruction may be a DCI instruction, where the DCI instruction has a length of L, and an L-bit sequence in the DCI signaling is used to instruct the terminal to perform inter-frequency measurement on an unlicensed spectrum corresponding to the L-bit sequence, where L is equal to log2N or log2(N +1) is an integer rounded up and N is equal to the number of a plurality of unlicensed frequency spectrums which are configured for the terminal by a main service cell of the terminal through RRC signaling and are required to be subjected to pilot frequency measurement by the terminal, if an L-bit sequence is required to indicate that the pilot frequency measurement of any one unlicensed frequency spectrum by the terminal is not triggered, when N is not equal to the integral power of 2, L is equal to log2N is an integer rounded up, and when N is equal to the integer power of 2, L is equal to log2(N +1) the rounded-up integer. L equals log if no L-bit sequence is required to indicate that inter-frequency measurements for any unlicensed spectrum by the terminal are not to be triggered2And N is an integer rounded upwards.
By implementing the embodiment of the invention, when the measurement signal sent by the service base station on the channel corresponding to the unlicensed spectrum is the discovery reference signal which can be sent only when the idle channel is detected, the aperiodic measurement interval for measuring the unlicensed spectrum by the pilot frequency is configured for the terminal, so that the accuracy of the measurement result of the pilot frequency measurement carried out by the terminal on the unlicensed spectrum and the throughput of the terminal in a service cell are improved, and the utilization rate of spectrum resources is improved.
It should be noted that, in the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to relevant descriptions of other embodiments for parts that are not described in detail in a certain embodiment. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts, modules, sub-modules, and sub-units described are not required to practice the invention.
The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.
The modules, sub-modules and subunits in the service base station of the embodiment of the invention can be combined, divided and deleted according to actual needs.
The modules, sub-modules, and sub-units described in the embodiments of the present invention may be implemented by a general-purpose integrated Circuit, such as a CPU (Central Processing Unit), or an ASIC (Application specific integrated Circuit).
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The method for configuring the measurement interval for measuring the unlicensed spectrum by using the pilot frequency and the serving base station disclosed by the embodiment of the invention are described in detail, and a specific example is applied to explain the principle and the implementation manner of the invention, and the description of the embodiment is only used for helping to understand the invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (16)

1. A measurement interval configuration method for inter-frequency measurement of unlicensed spectrum is characterized by comprising the following steps:
the method comprises the steps that a service base station determines a sending mode for sending a measuring signal on a channel corresponding to an unlicensed spectrum, and configures a measuring interval for pilot frequency measurement of the unlicensed spectrum according to the determined sending mode;
the serving base station configures a measurement interval for pilot frequency measurement of the unlicensed spectrum according to the determined transmission mode, including:
when a measurement signal transmitted on a channel corresponding to an unlicensed spectrum is in a short control signal transmission mode, a serving base station configures a measurement period of a measurement interval for measuring the unlicensed spectrum in a pilot frequency mode to M transmission periods, where the transmission period is a period in which an adjacent cell transmits the measurement signal, and M is an integer greater than or equal to 1;
the serving base station configures a measurement interval in each measurement cycle according to a preset configuration principle, the measurement interval in each measurement cycle covers a time period for transmitting the measurement signal in one transmission cycle in the measurement cycle, each time period comprises at least one time segment, each measurement interval comprises at least one interval segment, one interval segment covers one time segment, the starting time of each interval segment is earlier than the starting time of the time segment covered by the interval segment, and the ending time of each interval segment is later than the ending time of the time segment covered by the interval segment; or,
the serving base station configures an aperiodic measurement interval for pilot frequency measurement of an unlicensed spectrum; when the measurement signal transmitted on the channel corresponding to the unlicensed spectrum is a discovery reference signal which can only be transmitted when the channel is detected to be idle, the serving base station determines that one or more neighboring cells are in an idle state and the one or more neighboring cells are transmitting the measurement signal when the channel is detected to be idle;
the service base station sends a trigger instruction to the terminal through a main service cell of the terminal, wherein the trigger instruction includes a spectrum identifier of the unlicensed spectrum and is used for triggering the terminal to perform pilot frequency measurement on the unlicensed spectrum, the terminal is a terminal which needs to perform pilot frequency measurement on the unlicensed spectrum, and the terminal stores a plurality of unlicensed spectrums configured by the main service cell through Radio Resource Control (RRC) signaling, a spectrum identifier of each unlicensed spectrum in the plurality of unlicensed spectrums, and a corresponding pilot frequency measurement configuration in advance.
2. The method of claim 1, wherein the transmission period is 50 ms;
the sum of the time lengths of all the time segments included in each time segment is 2.5ms, and the difference between the time length of each interval segment and the time length of the time segment covered by the interval segment is less than or equal to 1 ms.
3. A method according to claim 1 or 2, characterized in that the configuration principle comprises:
when the terminal needs to perform pilot frequency measurement on the unlicensed spectrum and the licensed spectrum, the serving base station preferentially configures a measurement interval for pilot frequency measurement of the unlicensed spectrum, and configures the measurement interval for pilot frequency measurement of the licensed spectrum at a position which is overlapped with the measurement interval for pilot frequency measurement of the unlicensed spectrum at the least;
when the terminal needs to perform pilot frequency measurement on a plurality of unlicensed frequency spectrums, the serving base station and the neighboring base stations configure different time periods for sending measurement signals for different unlicensed frequency spectrums.
4. The method of claim 3, further comprising:
the serving base station sends a pilot frequency measurement principle and a configuration mode of the measurement interval to a terminal which needs to perform pilot frequency measurement on the unlicensed spectrum, so that the terminal performs pilot frequency measurement on the unlicensed spectrum according to the pilot frequency measurement principle and the configuration mode of the measurement interval, wherein the pilot frequency measurement principle is a pilot frequency measurement principle when the measurement interval for measuring the unlicensed spectrum in the pilot frequency and the measurement interval for measuring the licensed spectrum in the pilot frequency overlap;
the pilot frequency measurement principle comprises the following steps:
the terminal firstly performs pilot frequency measurement on an unlicensed spectrum, and after a target time period after the pilot frequency measurement on the unlicensed spectrum is finished, the terminal switches a receiver back to a carrier frequency where a serving cell is located, where the target time period is a target time period when the terminal performs the pilot frequency measurement on the licensed spectrum, and the end time of the target time period is the end time of a measurement interval for measuring the licensed spectrum in the pilot frequency measurement, or the time length of the target time period is equal to 6 ms.
5. The method according to claim 1, wherein the time length of the aperiodic measurement interval is equal to 6 ms.
6. The method of claim 5, wherein the serving base station determining that one or more neighboring cells are in an idle state and the one or more neighboring cells are transmitting measurement signals when detecting that a channel is idle comprises:
the serving base station receives indication information sent by a neighboring base station, wherein the indication information is used for indicating that one or more neighboring cells of the neighboring base station are in an idle state and the one or more neighboring cells are sending measurement signals when detecting that a channel is idle;
and the serving base station determines that the one or more adjacent cells are in an idle state according to the indication information and the one or more adjacent cells are sending the measurement signals when detecting that the channel is idle.
7. The method of claim 6, wherein before the serving base station receives the indication information sent by the neighboring base station, the method further comprises:
the serving base station sends an inquiry request to a neighboring base station, wherein the inquiry request is used for inquiring whether one or more neighboring cells of the neighboring base station are in an idle state or not and whether the one or more neighboring cells send a measurement signal or not when detecting that a channel is idle or not;
the indication information is generated by the adjacent base station in response to the query request.
8. The method according to any one of claims 5 to 7, wherein the trigger instruction comprises Media Access Control (MAC) signaling or Downlink Control Information (DCI) signaling;
the length of the MAC signaling is N bits, and a bit display value of each bit in the MAC signaling is used for indicating whether the terminal is triggered to carry out pilot frequency measurement on a corresponding unauthorized frequency spectrum or not;
the length of the DCI signaling is L bits, and an L-bit sequence in the DCI signaling is used for indicating the terminal to perform pilot frequency measurement on an unlicensed spectrum corresponding to the L-bit sequence, where L is equal to log2N or log2(N +1) a rounded up integer, said N being equal to the number of said plurality of unlicensed frequency spectra.
9. A serving base station, comprising a first configuration module and a second configuration module, wherein:
the first configuration module is configured to configure, when a measurement signal sent on a channel corresponding to an unlicensed spectrum is in a short control signal sending manner, a measurement cycle of a measurement interval for measuring the unlicensed spectrum using pilot frequencies is M sending cycles, where the sending cycle is a cycle in which an adjacent cell sends the measurement signal, and M is an integer greater than or equal to 1;
the second configuration module is configured to configure a measurement interval in each measurement cycle according to a preset configuration principle, where the measurement interval in each measurement cycle covers a time period for transmitting the measurement signal in one of the transmission cycles in the measurement cycle, each time period includes at least one time segment, each measurement interval includes at least one interval segment, one interval segment covers one time segment, the start time of each interval segment is earlier than the start time of the time segment covered by the interval segment, and the end time of each interval segment is later than the end time of the time segment covered by the interval segment;
the serving base station further comprises a third configuration module, wherein:
the third configuration module is configured to configure an aperiodic measurement interval for inter-frequency measurement of an unlicensed spectrum;
the third configuration module comprises a determination submodule and a sending submodule, wherein:
the determining sub-module is configured to determine that one or more neighboring cells are in an idle state and the one or more neighboring cells are transmitting measurement signals when detecting that a channel is idle, when a measurement signal transmitted on a channel corresponding to an unlicensed spectrum is a discovery reference signal that can only be transmitted when detecting that the channel is idle;
the sending submodule is configured to send a trigger instruction to the terminal through a main serving cell of the terminal, where the trigger instruction includes a spectrum identifier of the unlicensed spectrum and is configured to trigger the terminal to perform pilot frequency measurement on the unlicensed spectrum, the terminal is a terminal that needs to perform pilot frequency measurement on the unlicensed spectrum, and the terminal stores, in advance, a plurality of unlicensed spectrums configured by the main serving cell through radio resource control RRC signaling, a spectrum identifier of each unlicensed spectrum in the plurality of unlicensed spectrums, and a corresponding pilot frequency measurement configuration.
10. The serving base station of claim 9, wherein the transmission period is 50 ms;
the sum of the time lengths of all the time segments included in each time segment is 2.5ms, and the difference between the time length of each interval segment and the time length of the time segment covered by the interval segment is less than or equal to 1 ms.
11. The serving base station according to claim 9 or 10, wherein the configuration principle comprises:
when the terminal needs to perform pilot frequency measurement on the unlicensed spectrum and the licensed spectrum, the second configuration module preferentially configures a measurement interval for pilot frequency measurement of the unlicensed spectrum, and configures the measurement interval for pilot frequency measurement of the licensed spectrum at a position where the measurement interval for pilot frequency measurement of the unlicensed spectrum is overlapped least;
when the terminal needs to perform inter-frequency measurement on multiple unlicensed frequency spectrums, the second configuration module and the neighboring base station configure different time periods for sending measurement signals for different unlicensed frequency spectrums.
12. The serving base station of claim 11, further comprising a communication module, wherein:
the communication module is configured to send a pilot frequency measurement principle and a configuration mode of the measurement interval to a terminal that needs to perform pilot frequency measurement on the unlicensed spectrum, so that the terminal performs pilot frequency measurement on the unlicensed spectrum according to the pilot frequency measurement principle and the configuration mode of the measurement interval, where the pilot frequency measurement principle is a pilot frequency measurement principle when a measurement interval for measuring the unlicensed spectrum in the pilot frequency and a measurement interval for measuring the licensed spectrum in the pilot frequency overlap;
the pilot frequency measurement principle comprises the following steps:
the terminal firstly performs pilot frequency measurement on an unlicensed spectrum, and after a target time period after the pilot frequency measurement on the unlicensed spectrum is finished, the terminal switches a receiver back to a carrier frequency where a serving cell is located, where the target time period is a target time period when the terminal performs the pilot frequency measurement on the licensed spectrum, and the end time of the target time period is the end time of a measurement interval for measuring the licensed spectrum in the pilot frequency measurement, or the time length of the target time period is equal to 6 ms.
13. The serving base station of claim 9, wherein the aperiodic measurement interval has a length of time equal to 6 ms.
14. The serving base station of claim 13, wherein the determining sub-module comprises a receiving sub-unit and a determining sub-unit, wherein:
the receiving subunit is configured to receive indication information sent by a neighboring base station, where the indication information is used to indicate that one or more neighboring cells of the neighboring base station are in an idle state and the one or more neighboring cells are sending measurement signals when detecting that a channel is idle;
the determining subunit is configured to determine, according to the indication information, that the one or more neighboring cells are in an idle state and the one or more neighboring cells are transmitting measurement signals when detecting that a channel is idle.
15. The serving base station of claim 14, wherein the determining sub-module further comprises a transmitting sub-unit, wherein:
the sending subunit is configured to send an inquiry request to the neighboring base station, where the inquiry request is used to inquire whether one or more neighboring cells of the neighboring base station are in an idle state and whether the one or more neighboring cells send a measurement signal when detecting that a channel is idle;
the indication information is generated by the adjacent base station in response to the query request.
16. The serving base station according to any of claims 13 to 15, wherein the trigger instruction comprises a medium access control, MAC, signaling or downlink control information, DCI, signaling;
the length of the MAC signaling is N bits, and a bit display value of each bit in the MAC signaling is used for indicating whether the terminal is triggered to carry out pilot frequency measurement on a corresponding unauthorized frequency spectrum or not;
the length of the DCI signaling is L bits, and an L-bit sequence in the DCI signaling is used for indicating the terminal to perform pilot frequency measurement on an unlicensed spectrum corresponding to the L-bit sequence, where L is equal to log2N or log2(N +1) a rounded up integer, said N being equal to the number of said plurality of unlicensed frequency spectra.
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