WO2016119138A1 - 非授权频段的信道信息反馈方法、装置以及通信系统 - Google Patents

非授权频段的信道信息反馈方法、装置以及通信系统 Download PDF

Info

Publication number
WO2016119138A1
WO2016119138A1 PCT/CN2015/071700 CN2015071700W WO2016119138A1 WO 2016119138 A1 WO2016119138 A1 WO 2016119138A1 CN 2015071700 W CN2015071700 W CN 2015071700W WO 2016119138 A1 WO2016119138 A1 WO 2016119138A1
Authority
WO
WIPO (PCT)
Prior art keywords
subframe
channel quality
channel information
feedback
reference signal
Prior art date
Application number
PCT/CN2015/071700
Other languages
English (en)
French (fr)
Inventor
周华
张翼
徐海博
Original Assignee
富士通株式会社
周华
张翼
徐海博
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士通株式会社, 周华, 张翼, 徐海博 filed Critical 富士通株式会社
Priority to EP15879349.7A priority Critical patent/EP3253143B8/en
Priority to JP2017539232A priority patent/JP2018504045A/ja
Priority to PCT/CN2015/071700 priority patent/WO2016119138A1/zh
Priority to KR1020177021660A priority patent/KR102003143B1/ko
Priority to CN201580071907.XA priority patent/CN107113815A/zh
Publication of WO2016119138A1 publication Critical patent/WO2016119138A1/zh
Priority to US15/657,722 priority patent/US20170324534A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks

Definitions

  • the present invention relates to the field of communications, and in particular, to a channel information feedback method, apparatus, and communication system using LTE (Long Term Evolution) technology in an unlicensed frequency band.
  • LTE Long Term Evolution
  • the licensed frequency band is auctioned by various operators from the telecom market, and the price is expensive. Therefore, participants at all levels of the communication industry will ensure the full use of these licensed frequency bands by establishing standard protocols. Through these years of development, communication technologies based on licensed frequency bands Basically, the compromise between cost and utility has been achieved.
  • LTE technology in the unlicensed frequency band will have higher system capacity than WiFi technology, because LTE system has more flexible physical layer transmission technology and MAC (Media Access Control) layer physical resources. Distribution technology, and more advanced QoS (Quality of Service, Quality of service) management, etc. Based on these conclusions, many studies have begun to consider how to use LTE technology in unlicensed bands, and the use of LTE technology in these unlicensed bands must follow the LBT (Listen Before Talk) mechanism used by WiFi, namely the access terminal (Station). , STD) Before the data is ready to be transmitted, listen to whether there is other link data on the link. If there is, it will wait for a certain time. If not, it will delay sending data for a while.
  • LBT Listen Before Talk
  • WiFi the access terminal
  • the UE User Equipment, also called a terminal device, a terminal, or a user
  • the LTE system cannot be determined to be able to occupy the downlink resource of the unlicensed band.
  • the measured CQI (Channel Quality Indicator) will be extremely inaccurate.
  • the UE cannot ensure that the uplink resources of the unlicensed band can be occupied, so the latest update cannot be timely. CQI information.
  • an embodiment of the present invention provides a channel information feedback method, apparatus, and communication system for an unlicensed frequency band.
  • a channel information feedback method for an unlicensed frequency band is provided, where the method is applied to a user equipment (UE), where the method includes:
  • the channel quality measurement result of the subframe of the measured channel quality is reported in a subframe of the feedback channel information.
  • a channel information feedback method for an unlicensed frequency band is provided, where the method is applied to a base station (eNB), where the method includes:
  • the subframe performs channel quality measurement and reports channel quality measurements on the subframe in which the channel information is fed back.
  • a channel information feedback method for an unlicensed frequency band is provided, where the method is applied to a user equipment (UE), where the method includes:
  • the next uplink subframe returns a downlink subframe or a special subframe that is greater than or equal to 4 with the uplink subframe and is closest to the uplink subframe.
  • Channel Quality measurement results When the subframe of the feedback channel information is not an uplink subframe, the next uplink subframe returns a downlink subframe or a special subframe that is greater than or equal to 4 with the uplink subframe and is closest to the uplink subframe. Channel Quality measurement results.
  • a channel information feedback method for an unlicensed frequency band is provided, where the method is applied to a base station (eNB), where the method includes:
  • the channel quality measurement result of the downlink subframe is greater than or equal to 4 and is the closest to the uplink subframe or the downlink subframe or the special subframe.
  • a channel information feedback method for an unlicensed frequency band is provided, where the method is applied to a user equipment (UE), where the method includes:
  • the channel quality measurement result of the subframe in which the predefined reference signal is located is reported in a subframe of the feedback channel information.
  • a channel information feedback method for an unlicensed frequency band is provided, where the method is applied to a base station (eNB), where the method includes:
  • the predefined reference signal is sent, so that the user equipment performs channel quality measurement on the subframe in which the predefined reference signal is located when the predefined reference signal is detected. And reporting the channel quality measurement result of the subframe on the subframe in which the channel information is fed back.
  • a channel information feedback apparatus for an unlicensed frequency band the apparatus being applied to a user equipment (UE), wherein the apparatus comprises:
  • a determining unit configured to determine a subframe for feeding back channel information according to a configuration of the base station, and determining a subframe for measuring channel quality according to the subframe of the feedback channel information;
  • a detecting unit that detects whether a subframe of the measured channel quality has a predefined reference signal
  • a feedback unit that reports a channel quality measurement result of the subframe of the measured channel quality in a subframe of the feedback channel information when the detecting unit detects that the subframe of the measured channel quality has a predefined reference signal.
  • a channel information feedback apparatus for an unlicensed frequency band is provided, where the apparatus is applied to a base station (eNB), where the apparatus includes:
  • a configuration unit that configures a subframe that feeds back channel information, so that the user equipment determines a subframe that measures channel quality according to the subframe of the feedback channel information, and when there is a predefined reference signal in the subframe of the measured channel quality,
  • the subframe for measuring the channel quality performs channel quality measurement and reports the channel quality measurement result in the subframe in which the channel information is fed back.
  • a channel information feedback apparatus for an unlicensed frequency band the apparatus being applied to a user equipment (UE), wherein the apparatus comprises:
  • a determining unit that determines a subframe of the feedback channel information according to a channel quality measurement request of the base station
  • a feedback unit when the subframe of the feedback channel information is not an uplink subframe, and feeding back a downlink subframe with a distance of 4 or more from the uplink subframe and being closest to the uplink subframe in a next uplink subframe Or channel quality measurement results for special subframes.
  • a channel information feedback apparatus for an unlicensed frequency band is provided, where the apparatus is applied to a base station (eNB), where the apparatus includes:
  • a sending unit configured to send a channel quality measurement request to the user equipment, so that the user equipment determines the subframe of the feedback channel information according to the channel quality measurement request, and when the subframe of the feedback channel information is not an uplink subframe, in the next sub
  • the frame reports a channel quality measurement result of a downlink subframe or a special subframe whose distance from the uplink subframe is greater than or equal to 4 and is closest to the uplink subframe.
  • a channel information feedback apparatus for an unlicensed frequency band the apparatus being applied to a user equipment (UE), wherein the apparatus comprises:
  • a detecting unit that detects a predefined reference signal
  • a determining unit when the detecting unit detects the predefined reference signal, determining a subframe of the feedback channel information according to the subframe in which the predefined reference signal is located;
  • a feedback unit that reports a channel quality measurement result of the subframe in which the predefined reference signal is located in a subframe of the feedback channel information.
  • a channel information feedback apparatus for an unlicensed frequency band the apparatus being applied to a base station (eNB), wherein the apparatus comprises:
  • a sending unit when the base station competes to occupy an unlicensed frequency band, sends a predefined reference signal, so that when the user equipment detects the predefined reference signal, the subframe in which the predefined reference signal is located is performed.
  • the channel quality is measured, and the channel quality measurement result of the subframe is reported in a subframe in which the channel information is fed back.
  • a user equipment comprising the foregoing seventh
  • the channel information feedback device of the unlicensed frequency band according to the aspect, the ninth aspect or the eleventh aspect.
  • a base station comprising the channel information feedback device of the unlicensed frequency band according to the eighth aspect, the tenth aspect or the twelfth aspect.
  • a communication system comprising the user equipment of the aforementioned thirteenth aspect and the base station according to the fourteenth aspect.
  • the beneficial effects of the embodiments of the present invention are that, by using the embodiment of the present invention, CQI measurement and reporting errors when using the LTE technology in the unlicensed frequency band are avoided.
  • 1 is a schematic diagram of a scenario in which an unlicensed frequency band competes for resources of an unlicensed frequency band;
  • FIG. 2 is a schematic diagram of another scenario of competing for resources in an unlicensed band in an unlicensed band;
  • FIG. 3 is a schematic diagram of a CTMI reported by a user equipment in a mth subframe according to a CQI request of an nth subframe;
  • FIG. 5 is a flowchart of a channel information feedback method of an unlicensed frequency band of Embodiment 2;
  • FIG. 6 is a flowchart of a channel information feedback method of an unlicensed frequency band of Embodiment 3;
  • FIG. 9 is a flowchart of a channel information feedback method of an unlicensed frequency band of Embodiment 5;
  • FIG. 10 is a flowchart of a channel information feedback method of an unlicensed frequency band of Embodiment 6;
  • FIG. 11 is a schematic diagram showing the composition of a channel information feedback apparatus corresponding to an unlicensed frequency band of the method of Embodiment 1;
  • FIG. 12 is a schematic diagram showing the composition of a channel information feedback apparatus corresponding to an unlicensed frequency band of the method of Embodiment 2;
  • FIG. 13 is a schematic diagram showing the composition of a channel information feedback apparatus corresponding to an unlicensed frequency band of the method of Embodiment 3;
  • FIG. 14 is a schematic diagram showing the composition of a channel information feedback apparatus corresponding to an unlicensed frequency band of the method of Embodiment 4;
  • FIG. 15 is a schematic diagram showing the composition of a channel information feedback apparatus corresponding to an unlicensed frequency band of the method of Embodiment 5;
  • FIG. 16 is a schematic diagram showing the composition of a channel information feedback apparatus corresponding to an unlicensed frequency band of the method of Embodiment 6;
  • 17 is a schematic diagram showing the composition of a user equipment in this embodiment.
  • FIG. 18 is a schematic diagram showing the structure of a base station according to this embodiment.
  • Fig. 19 is a schematic diagram showing the topology of the communication system of the embodiment.
  • LTE uses unlicensed band resources, which can have two typical scenarios (not limited to) shown in FIG. 1 and FIG. 2.
  • the first scenario is that the eNB of the LTE (including the small cell small cell) competes with the AP of the WiFi for using an unlicensed frequency band, and the LTE system competes with another WiFi system, and the system adopted by the two systems.
  • the WiFi system since the WiFi system is already very mature in the unlicensed frequency band, as a newly joined LTE system, it must be ensured that the channel will not be occupied by interference to the WiFi system that is using the frequency band, or if the channel is not detected by the detection.
  • the LTE base station can communicate and data with the LTE UE during the time occupied by the LTE.
  • the LTE base station competes with another LTE base station, and the two LTE base stations may be two eNBs of the same operator or two eNBs of different operators. Different from the scenario shown in Figure 1, the two competing base stations adopt the same standard.
  • the LTE base station can transmit a preamble or other signal indicating that the signal is an LTE signal, and the signal is used to indicate that the LTE base station has occupied the unlicensed frequency band resource, and can be used for subsequent data transmission.
  • the base station Before performing data transmission, the base station must first obtain the channel quality of the base station and the UE.
  • the channel quality is obtained by the UE measuring the reference signal transmitted by the base station at a fixed position and time, and the UE obtains the channel quality.
  • the CQI (Channel Quality Indicator) is fed back to the base station through a PUCCH (Physical Uplink Control CHannel) or a PUSCH (Physical Uplink Shared Channel);
  • the transmitted reference signal may be a preamble, a CRS (Cell-specific reference signal), or a CSI-RS (Channel Status Information Reference Signal).
  • the CQI report of the nth subframe is based on the CQI measurement result of the UE.
  • the measurement is based on a known reference signal resource, and the reference signal resource is the nn CQI_ref downlink subframe or the special subframe.
  • n CQI_ref must be a minimum integer greater than or equal to 4, such that this subframe (the nn CQI_ref subframes) is a valid downlink subframe or a special subframe.
  • the value of the n CQI_ref must be selected such that the valid downlink subframe corresponding to the reference signal resource is the downlink subframe occupied by the PDCCH.
  • effective downlink subframe or special subframe reference may be made to the existing standard. In short, if the base station configures the subframe as a downlink subframe or a special subframe, it is a valid downlink subframe or a special subframe. frame.
  • the base station configures the UE to perform CQI reporting at the nth subframe time
  • the UE needs to measure the reference signal in the n-4th subframe.
  • the LTE eNB does not occupy the unlicensed channel in the n-4th subframe (because it is possible that the WiFi already occupies the channel)
  • all the downlink subframes are For a valid downlink subframe, the UE can only feed back the measurement results on n-4 subframes.
  • the measured CQI will have serious deviations.
  • the eNB fails to transmit data according to the transmission mode selected by the CQI.
  • the valid downlink subframe is not competing by the eNB of the LTE, the final measured CQI may be seriously inaccurate.
  • the eNB of the LTE system occupies the unlicensed band resources, it is generally understood that the occupation can only last for a period of time, and then must be released for other systems such as WiFi APs (Access Point, access points) or eNB eNB contends, if according to existing standards, for aperiodic CQI feedback, if the eNB triggers UE feedback in the nth subframe, the UE needs to measure the reference signal on the nth subframe, and then in the n+4th sub-frame The frame (corresponding to the uplink subframe) reports the measurement result, and then the CQI cannot be reported in time due to the uncertainty of whether the UE can occupy the channel at the time of the subframe.
  • WiFi APs Access Point, access points
  • eNB eNB contends, if according to existing standards, for aperiodic CQI feedback, if the eNB triggers UE feedback in the nth subframe, the UE needs to measure the reference signal on the nth
  • the n+4th subframe is occupied by other systems, such as WiFi, so that the UE can wait until the next uplink subframe to upload the CQI.
  • the UE can occupy the unauthorized.
  • the channel is used for uplink transmission, so the CQI that will be measured in the nth subframe can be fed back in this subframe.
  • the eNB has occupied the channel to transmit PDSCH downlink data, usually this data will contain a reference signal, and the reference signal is relatively more than the nth subframe.
  • the reference signal more accurately reflects the quality of the existing channel, but the current standard does not support the CQI measurement data of the reference signal using the n+3th subframe in the mth subframe. Feeding back the CQI measurement of the nth subframe in the mth subframe causes the channel measurement data to be out of date, and thus is inaccurate.
  • FIG. 4 is a flowchart of the method. Referring to FIG. 4, the method includes:
  • Step 401 The user equipment determines, according to the configuration of the base station, a subframe that feeds back channel information.
  • Step 402 The user equipment determines, according to a subframe that feeds back channel information, a subframe that measures channel quality.
  • Step 403 The user equipment detects whether a subframe that measures channel quality has a predefined reference signal.
  • Step 404 If a subframe that measures channel quality has a predefined reference signal, the user equipment is The subframe of the feedback channel information reports a channel quality measurement result of the subframe of the measured channel quality.
  • the base station may configure a subframe in which the user equipment feeds back the channel information, and the user equipment may determine the subframe in which the channel information is fed back according to the configuration of the base station, and further, the user equipment may determine the measurement channel according to the subframe of the feedback channel information.
  • Quality sub-frame For example, for the periodic CQI feedback, the base station configures the UE to perform CQI feedback in the nth uplink subframe, and the UE may determine that the subframe in which the channel quality is measured is the nn CQI_ref subframes, that is, the UE is to the nn CQI_ref subframes. The channel quality is measured and the measurement result is fed back in the nth subframe.
  • the difference between the prior art and the user equipment is to detect the quality of the measured channel before performing channel quality measurement on the subframe that measures the channel quality (in the foregoing, the nn CQI_ref subframes). Whether the frame has a predefined reference signal, and the user equipment reports the channel quality of the subframe of the measured channel quality in the subframe of the feedback channel information only if the subframe with the measured channel quality has a predefined reference signal. Measurement results.
  • the predefined reference signal is sent by the base station in its valid downlink subframe or special subframe.
  • the predefined reference signal may be a CRS, or may be other reference signals such as a preamble or a CSI-RS.
  • the user equipment may perform channel quality measurement based on the subframe of the measured channel quality, so as to feed back the channel information.
  • the frame reports the measurement result of the subframe.
  • the user equipment may also store the measured measurement result or update the stored measurement result for subsequent use.
  • the base station may not occupy the subframe of the measured channel quality, that is, the sub-frame of the measured channel quality. If the frame is occupied by other systems, the user equipment may report the previously stored channel quality measurement result in the subframe in which the channel information is fed back (step 405) instead of feeding back the measurement result of the subframe of the measured channel quality, such that Although the previously stored measurements may have expired, the measurement is more accurate than reporting a measurement based on resources occupied by other systems.
  • the user equipment can pass through a primary cell (Pcell) connected to the user equipment.
  • Pcell primary cell
  • the PUCCH uploads the measurement result, and may also change the measurement result by using the PUSCH of the primary cell connected to the user equipment, but this embodiment is not limited thereto.
  • the definition of the valid downlink subframe or the special subframe defined in the current standard may be modified as "it is configured as a downlink subframe or a special subframe for that UE, or It is identified as a downlink subframe or a special subframe for that UE if the UE could detect some pre-defined reference signal (for example CRS, preamble, etc.,), on that subframe", that is, it is It is configured as one downlink subframe or one special subframe, or if the UE can detect a predefined reference signal in one subframe, the subframe is identified as one downlink subframe or one special subframe.
  • some pre-defined reference signal for example CRS, preamble, etc.
  • the problem that the LTE system can occupy the downlink resources of the unlicensed frequency band cannot be determined in advance, and the CQI measured based on the existing valid downlink subframe or the special subframe is extremely inaccurate.
  • the present embodiment provides a channel information feedback method for an unlicensed frequency band, which is applied to a base station (eNB), which is a base station side processing corresponding to the method of Embodiment 1, and the base station may be a small base station in an LTE system ( Small cell), other base stations are also available.
  • eNB base station
  • FIG. 5 is a flowchart of the method. Referring to FIG. 5, the method includes:
  • Step 501 The base station configures a subframe that feeds back channel information, so that the user equipment determines a subframe for measuring channel quality according to the subframe of the feedback channel information, and when there is a predefined reference signal in the subframe of the measured channel quality, The subframe for measuring the channel quality performs channel quality measurement and reports the channel quality measurement result in the subframe in which the channel information is fed back.
  • the base station configures a subframe in which the UE performs CQI feedback, for example, an nth subframe, and the UE can thereby determine a subframe for measuring channel quality, that is, a nn CQI_ref subframe, when the first Nn
  • the UE may perform channel quality measurement based on the nn CQI_ref subframes, and feed back the measurement result, that is, the corresponding CQI value, in the nth subframe.
  • Embodiment 1 For the processing of the UE, see Embodiment 1.
  • the base station may transmit signaling of a subframe configuring the feedback channel information by using a PDCCH or RRC signaling of a primary cell (Pcell) connected to the user equipment, or may use other channels and/or signals. Let the above configuration signaling be transmitted.
  • FIG. 6 is a flowchart of the method. Referring to FIG. 6, the method includes:
  • Step 601 The user equipment determines a subframe of the feedback channel information according to the channel quality measurement request of the base station.
  • Step 601 If the subframe of the feedback channel information is not an uplink subframe, feedback, in a next uplink subframe, a downlink subframe that is greater than or equal to 4 with the uplink subframe and is closest to the uplink subframe or Channel quality measurement results for special subframes.
  • FIG. 7 is a schematic diagram of an application scenario of the embodiment.
  • the eNB sends a channel quality measurement request CQI request in the nth subframe, after receiving the CQI request, the UE receives the CQI request.
  • the subframe of the feedback channel information may be determined according to the subframe (the nth subframe) in which the CQI request is located. However, since the n+4th subframe is already occupied by other systems, The UE may perform CQI feedback in the next uplink subframe, that is, the mth subframe.
  • the UE does not feed back the channel quality measurement result of the nth subframe, but feeds back the channel quality measurement result of the n+3th subframe, and the distance between the n+3th subframe and the mth subframe needs to be It is greater than or equal to 4, and a subframe greater than or equal to 4 is required with respect to the distance from the mth subframe, and the distance between the n+3th subframe and the mth subframe is the closest. Therefore, since the UE feeds back the CQI of the latest downlink subframe, the CQI can accurately reflect the channel quality during data transmission, and solves the problem that the UE cannot ensure that the uplink resource of the unlicensed band can be occupied, and therefore cannot be timely. Feedback on the latest CQI information.
  • the user equipment may be based on a downlink subframe or a special subframe (for example, the n+3 subframes) whose distance from the uplink subframe is greater than or equal to 4 and is closest to the uplink subframe.
  • the reference signal is used to perform channel quality measurement on the downlink subframe or the special subframe.
  • the subframe is a downlink subframe, and the reference signal is also included in the subframe, and the UE may perform channel quality measurement on the subframe based on the reference signal.
  • the definition of the position of the reference signal that needs to be measured for the aperiodic CQI feedback UE defined in the current standard may be modified to "The CSI reference resource is defined by a single downlink or Special subframe nn CQI_ref ,...where for aperiodic CSI reporting,...n CQI_ref is minimum ⁇ the smallest value greater than or equal to 4,such that it corresponds to a valid downlink or valid special subframe,a value such that the reference resource is in The same valid downlink or valid special subframe as the corresponding CSI request in an uplink DCI format ⁇ .
  • the CSI reference resource is defined by a single downlink subframe or a special subframe nn CQI_ref , where The CSI reports that nn CQI_ref is the minimum of the following two values: a minimum value greater than or equal to 4, such that the subframe corresponds to a valid downlink subframe or a valid special subframe; and another value such that the reference resource is located on a valid downlink.
  • Subframe or valid special subframe which is transmitted with the uplink DCI format Subframe CSI request to the same sub-frame.
  • the problem that the UE cannot ensure that the uplink resource of the unlicensed frequency band can be occupied cannot be timely, and therefore the latest CQI information cannot be timely reported is solved.
  • the present embodiment further provides a channel information feedback method for an unlicensed frequency band, where the method is applied to a base station (eNB), which is a base station side processing corresponding to the method of Embodiment 3, and the base station may be a small base station in an LTE system. (small cell), other base stations are also available.
  • eNB base station
  • FIG. 8 is a flowchart of the method. Referring to FIG. 8, the method includes:
  • Step 801 The base station sends a channel quality measurement request to the user equipment, so that the user equipment determines the subframe of the feedback channel information according to the channel quality measurement request, and when the subframe of the feedback channel information is not an uplink subframe, the next uplink
  • the subframe reports a channel quality measurement result of a downlink subframe or a special subframe that is greater than or equal to 4 and is closest to the uplink subframe.
  • the method for the base station to send the channel quality measurement request may refer to the existing standard, and the processing procedure of the user equipment is shown in Embodiment 3.
  • the problem that the UE cannot ensure that the uplink resource of the unlicensed frequency band can be occupied cannot be timely, and therefore the latest CQI information cannot be timely reported is solved.
  • FIG. 9 is a flowchart of the method. Referring to FIG. 9, the method includes:
  • Step 901 The user equipment detects a predefined reference signal.
  • Step 902 If a predefined reference signal is detected, according to where the predefined reference signal is located The subframe determines a subframe of the feedback channel information;
  • Step 903 Report a channel quality measurement result of the subframe in which the predefined reference signal is located in a subframe of the feedback channel information.
  • the timing requirements for measurement and reporting are changed, that is, the limits of n and n CQI_ref are removed , and the base station explicitly configures CQI feedback or triggers aperiodic CQI feedback to be implicit (implicit).
  • Indicates CQI feedback That is, once the base station occupies the resource of the unlicensed band, that is, the pre-defined reference signal is sent, when the UE detects the predefined reference signal, the UE determines the sub-frame of the feedback channel information according to the sub-frame where the pre-defined reference signal is located. Frame, and report the measurement result in the subframe of the feedback channel information.
  • the UE may feed back the CQI in the n+thth subframe, where k may be 2, 3, or 4, preferably 4. Therefore, it is not necessary to wait for the base station to trigger CQI feedback by signaling on the PDCCH, thereby avoiding the problem of CQI measurement and reporting error when the unlicensed band uses the LTE technology.
  • the predefined reference signal may be a preamble, a CRS, or a CSI-RS.
  • the channel quality measurement may be performed based on the subframe in which the predefined reference signal is located, so that the measurement result is reported in the subframe in which the channel information is fed back.
  • the present embodiment further provides a channel information feedback method for an unlicensed frequency band, which is applied to a base station (eNB), which is a base station side processing corresponding to the method of Embodiment 5, and the base station may be a small base station in an LTE system. (small cell), other base stations are also possible.
  • eNB base station
  • FIG. 10 is a flowchart of the method. Referring to FIG. 10, the method includes:
  • Step 1001 The base station sends a predefined reference signal when the unoccupied frequency band is occupied by the competition, so that the user equipment performs channel quality measurement on the subframe where the predefined reference signal is located when detecting the predefined reference signal. And reporting the channel quality measurement result of the subframe on the subframe in which the channel information is fed back.
  • the pre-defined reference signal may be sent, which may be a preamble, or a CRS, CSI-RS, etc., when the UE detects that the nth subframe has a reference signal. Then, the channel quality is measured based on the nth subframe, and the measurement result, that is, the value of CQI, is fed back in the n+kth subframe, and the k value may be 2, 3, 4, preferably 4. This method does not need to wait until the eNB triggers the feedback CQI by signaling on the PDCCH, thereby avoiding the problem of CQI measurement and reporting error when the unlicensed band uses the LTE technology.
  • the method of the present embodiment has been described above by using six embodiments.
  • the methods of the foregoing embodiments may be used in combination.
  • the methods of Embodiments 1 and 2 may be combined with the methods of Embodiments 3 and 4. Since the unlicensed band resources are used by the competition rather than the centralized allocation mechanism, the conventional CQI report based on the base station configuration or the trigger cannot guarantee that the CQI measured by the UE is valid data, and the method of the embodiment 1-6 overcomes the problem. A defect that avoids CQI measurement and reporting errors when using LTE technology in unlicensed bands.
  • This embodiment provides a channel information feedback device for an unlicensed frequency band, and the device can be applied to a user equipment. Since the principle of solving the problem is similar to the method of the first embodiment, the specific implementation can refer to the implementation of the method of the first embodiment, and the details are not repeated.
  • the channel information feedback device 1100 of the unlicensed band includes a determining unit 1101, a detecting unit 1102, and a feedback unit 1103.
  • the determining unit 1101 is configured to determine a subframe for feeding back channel information according to a configuration of the base station, and determine a subframe for measuring channel quality according to the subframe of the feedback channel information.
  • the detecting unit 1102 is configured to detect whether a subframe of the measured channel quality has a predefined reference signal.
  • the feedback unit 1103 is configured to report a channel quality measurement result of the subframe of the measured channel quality in a subframe of the feedback channel information when the detecting unit 1102 detects that the subframe of the measured channel quality has a predefined reference signal.
  • the device may further include:
  • the measuring unit 1104 performs channel quality measurement on the subframe in which the channel quality is measured when the detecting unit 1102 detects that the subframe in which the channel quality is measured has a predefined reference signal.
  • the feedback unit 1103 also reports the previously stored channel quality measurement result in the subframe of the feedback channel information when the detection unit detects that the subframe of the measured channel quality does not have a predefined reference signal.
  • the feedback unit may report the channel quality measurement result by using the PUCCH or the PUSCH of the primary cell that is connected to the user equipment.
  • This embodiment provides a channel information feedback device for an unlicensed frequency band, and the device can be applied to a base station. Since the principle of solving the problem is similar to the method of the second embodiment, the specific implementation can refer to the implementation of the method of the second embodiment, and the description of the same portions will not be repeated.
  • the channel information feedback device 1200 of the unlicensed band includes: a configuration unit 1201 configured to configure a subframe for feeding back channel information, so that the user equipment according to the feedback channel information
  • the subframe determines a subframe for measuring channel quality, and when there is a predefined reference signal in the subframe of the measured channel quality, performing channel quality measurement on the subframe of the measured channel quality and reporting the channel quality in the subframe of the feedback channel information Measurement results.
  • the configuration unit 1201 may transmit signaling of a subframe configuring feedback channel information by using a PDCCH or RRC signaling of a primary cell connected to the user equipment.
  • This embodiment provides a channel information feedback device for an unlicensed frequency band, and the device can be applied to a user equipment. Since the principle of solving the problem is similar to the method of the embodiment 3, the specific implementation can refer to the implementation of the method of the embodiment 3, and the description of the same portions is not repeated.
  • FIG. 13 is a schematic diagram of the composition of the device.
  • the channel information feedback device 1300 of the unlicensed band includes a determining unit 1301 and a feedback unit 1302.
  • the determining unit 1301 is configured to determine a subframe of the feedback channel information according to the channel quality measurement request of the base station.
  • the feedback unit 1302 is configured to: when the subframe of the feedback channel information is not an uplink subframe, feed back a downlink subframe or a special subframe that is greater than or equal to the uplink subframe and is closest to the uplink subframe in the next uplink subframe.
  • the channel quality measurement result of the frame is configured to: when the subframe of the feedback channel information is not an uplink subframe, feed back a downlink subframe or a special subframe that is greater than or equal to the uplink subframe and is closest to the uplink subframe in the next uplink subframe.
  • the device may further include:
  • the measuring unit 1303 is configured to perform channel quality on the downlink subframe or the special subframe based on a reference signal in a downlink subframe or a special subframe that is greater than or equal to the uplink subframe and is the closest to the uplink subframe. measuring.
  • This embodiment provides a channel information feedback device for an unlicensed frequency band, and the device can be applied to a base station. Since the principle of solving the problem is similar to the method of the embodiment 4, the specific implementation can refer to the implementation of the method of the embodiment 4, and the description of the same portions will not be repeated.
  • the channel information feedback device 1400 of the unlicensed band includes: a sending unit 1401, which sends a channel quality measurement request to the user equipment, so that the user equipment determines according to the channel quality measurement request. Subscribing to the subframe of the channel information, and when the subframe of the feedback channel information is not an uplink subframe, reporting, in the next subframe, a downlink subframe that is greater than or equal to 4 and closest to the uplink subframe Or channel quality measurement results for special subframes.
  • the embodiment of the invention provides a channel information feedback device for an unlicensed frequency band, and the device can be applied to a user equipment. Since the principle of solving the problem is similar to the method of the embodiment 5, the specific implementation can refer to the implementation of the method of the embodiment 5, and the description of the same portions is not repeated.
  • the channel information feedback device 1500 of the unlicensed band includes a detecting unit 1501, a determining unit 1502, and a feedback unit 1503.
  • the detecting unit 1501 is configured to detect a predefined reference signal.
  • the determining unit 1502 is configured to determine, when the detecting unit 1501 detects the predefined reference signal, the subframe of the feedback channel information according to the subframe in which the predefined reference signal is located.
  • the feedback unit 1503 is configured to report, in the subframe of the feedback channel information, the sub-defined reference signal The channel quality measurement result of the frame.
  • the device may further include:
  • the measuring unit 1504 performs channel quality measurement on the subframe in which the predefined reference signal is located.
  • the embodiment of the invention provides a channel information feedback device for an unlicensed frequency band, and the device can be applied to a base station. Since the principle of solving the problem is similar to the method of the embodiment 6, the specific implementation can refer to the implementation of the method of the embodiment 6, and the description of the same portions is not repeated.
  • the channel information feedback device 1600 of the unlicensed frequency band includes: a sending unit 1601, when the base station competes to occupy an unlicensed frequency band, sends a predefined reference signal.
  • a sending unit 1601 when the base station competes to occupy an unlicensed frequency band, sends a predefined reference signal.
  • the user equipment detects the predefined reference signal, the channel quality measurement is performed on the subframe in which the predefined reference signal is located, and the channel quality measurement result of the subframe is reported in the subframe in which the channel information is fed back.
  • the embodiment of the present invention further provides a user equipment, where the user equipment includes the channel information feedback device of the unlicensed frequency band described in Embodiments 7, 9, and 11.
  • FIG. 17 is a schematic diagram of the composition of a user equipment according to an embodiment of the present invention.
  • the user equipment 1700 can include a central processor 1701 and a memory 1702; the memory 1702 is coupled to the central processor 1701.
  • the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.
  • the function of the channel information feedback device of the unlicensed band may be integrated into the central processor 1701, and the channel information feedback device of the unlicensed band described in Embodiments 7, 9, and 11 is implemented by the central processor 1701.
  • the function of the channel information feedback device for the unlicensed band is incorporated herein and will not be described again.
  • the channel information feedback device of the unlicensed frequency band may be configured separately from the central processing unit 1701.
  • the channel information feedback device of the unlicensed frequency band may be configured as a chip connected to the central processing unit 1701 through the central processing unit.
  • the control of 1701 implements the function of the channel information feedback device of the unlicensed band.
  • the user equipment 1700 may further include: a communication module 1703, an input unit 1704, an audio processing unit 1705, a display 1706, and a power supply 1707. It should be noted that the user equipment 1700 does not have to include all the components shown in FIG. 17; in addition, the user equipment 1700 may further include components not shown in FIG. 17, and reference may be made to the prior art.
  • central processor 1701 also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device that receives input and controls each of user devices 1700. The operation of the part.
  • the memory 1702 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable device.
  • the above configuration-related information can be stored, and a program for executing the related information can be stored.
  • the central processor 1701 can execute the program stored by the memory 1702 to implement information storage or processing and the like.
  • the functions of other components are similar to those of the existing ones and will not be described here.
  • the various components of user device 1700 can be implemented by special purpose hardware, firmware, software, or a combination thereof without departing from the scope of the invention.
  • the embodiment of the present invention further provides a base station, where the base station includes the channel information feedback device of the unlicensed frequency band described in Embodiments 8, 10, and 12.
  • FIG. 18 is a schematic diagram showing the configuration of an embodiment of a base station according to an embodiment of the present invention.
  • the base station 1800 can include a central processing unit (CPU) 1801 and a memory 1802; the memory 1802 is coupled to the central processing unit 1801.
  • the memory 1802 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 1801 to receive various information transmitted by the user equipment and to transmit various information to the user equipment.
  • the function of the channel information feedback device of the unlicensed band can be integrated into the center In the processor 1801, the function of the channel information feedback device of the unlicensed band described in Embodiments 8, 10, and 12 is implemented by the central processing unit 1801, wherein the function of the channel information feedback device for the unlicensed band is incorporated herein, This will not be repeated here.
  • the channel information feedback device of the unlicensed frequency band may be configured separately from the central processing unit 1801.
  • the channel information feedback device of the unlicensed frequency band may be configured as a chip connected to the central processing unit 1801 through the central processing unit.
  • the control of 1801 implements the function of the channel information feedback device of the unlicensed band.
  • the base station 1800 may further include: a transceiver 1803, an antenna 1804, and the like; wherein the functions of the foregoing components are similar to those of the prior art, and details are not described herein again. It should be noted that the base station 1800 does not have to include all of the components shown in FIG. 18; in addition, the base station 1800 may also include components not shown in FIG. 18, and reference may be made to the prior art.
  • FIG. 19 is a schematic diagram of a topology structure of the communication system.
  • the communication system 1900 includes: a user equipment 1901 and a base station 1902.
  • the base station 1902 is configured to configure a subframe for feeding back channel information for the user equipment 1901, or send a channel quality measurement request to the user equipment 1901, or send a predefined reference signal or the like when occupying an unlicensed frequency band through contention.
  • the base station 1901 is also configured to implement other functions of its signal transceiving, and details are not described herein again.
  • the base station can be implemented by the base station of Embodiment 14, and the content thereof is incorporated herein, and details are not described herein again.
  • the user equipment 1901 is configured to perform information interaction with the base station 1901. For example, determining a subframe for measuring channel quality according to a subframe of feedback channel information configured by the base station, and having a predefined reference in the subframe of the measured channel quality. At the time of the signal, the channel quality measurement is performed on the subframe of the measured channel quality and the channel quality measurement result is reported in the subframe of the feedback channel information. For example, the subframe of the feedback channel information is determined according to the channel quality measurement request sent by the base station, and when the subframe of the feedback channel information is not the uplink subframe, the distance between the reported subframe and the uplink subframe is greater than that in the next subframe.
  • Channel quality measurement result equal to 4 and one downlink subframe or special subframe closest to the uplink subframe.
  • the subframe in which the predefined reference signal is located performs channel quality measurement, and reports the channel quality measurement result of the subframe on the subframe in which the channel information is fed back.
  • the user equipment can be implemented by using the user equipment of Embodiment 13, and the content thereof is incorporated herein, and details are not described herein again.
  • An embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a channel information feedback device or user equipment of an unlicensed frequency band, the program causes a computer to process the device or user in the cache status report
  • the channel information feedback method of the unlicensed frequency band described in Embodiments 1, 3, and 5 is performed in the device.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the embodiments described in Embodiments 1, 3, and 5 in a channel information feedback device or user equipment of an unlicensed frequency band. Channel information feedback method for unlicensed bands.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a channel information feedback device or a base station of an unlicensed frequency band, the program causes the computer to be in the processing device or base station of the buffer status report
  • the channel information feedback method of the unlicensed frequency band described in Embodiments 2, 4, and 6 is performed.
  • An embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform the embodiments described in Embodiments 2, 4, and 6 in a channel information feedback device or a base station of an unlicensed frequency band. Channel information feedback method for unlicensed bands.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请提供一种非授权频段的信道信息反馈方法、装置以及通信系统，其中，一个方法包括：用户设备根据基站的配置确定反馈信道信息的子帧；所述用户设备根据反馈信道信息的子帧确定测量信道质量的子帧；所述用户设备检测测量信道质量的子帧是否存在预定义的参考信号；如果测量信道质量的子帧存在预定义的参考信号，则所述用户设备在反馈信道信息的子帧上报对所述测量信道质量的子帧的信道质量测量结果。通过本发明实施例，避免了在非授权频段使用LTE技术时的CQI测量和报告错误。

Description

非授权频段的信道信息反馈方法、装置以及通信系统 技术领域
本发明涉及通信领域，特别涉及一种在非授权频段使用LTE(Long Term Evolution，长期演进)技术的信道信息反馈方法、装置以及通信系统。
背景技术
近年来，无线通信技术得到了高速发展，3GPP(3rd Generation Partnership Project，第三代合作伙伴计划)标准化已经发展到Rel.12(版本12)，关键技术涵盖了小小区(small cell)的广泛配置、载波聚合(carrier aggregation)、3D多天线技术(MIMO，Multiple-Input Multiple-Output，多入多出)等。即使是在众多传输技术上得到了突破，考虑到现在以及未来移动业务的迅猛发展，以及终端形态的多样化，数量的巨量化，现有以及可预见的将来，基于授权频段的LTE系统仍然会有容量的不足。
一方面，授权频段是各个运营商从电信市场拍卖到的，价格昂贵，所以通信产业各级参与者会通过制定标准协议保证充分使用这些授权频段，通过这些年的发展，基于授权频段的通信技术基本已经达到成本与效用的折中。
另一方面，在ITU(International Telecommunication Union，国际电信联盟)全球电联划定的授权频段外，还有大量的非授权(unlicensed)频段，这些频段可以在满足政策允许的条件下随意使用，比如在2.6Ghz频段，现在有大量的WiFi(无线保真)应用，既可以是运营商部署，也可以由商家在商场部署。考虑到这些大量的非授权频段空置，LTE产业参与者开始考虑如何在这些频段引入LTE技术。
应该注意，上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
有研究表明，同样在非授权频段，使用LTE技术比WiFi技术会有更高的系统容量，原因是LTE系统有更加灵活的物理层传输技术以及MAC(Media Access Control，介质访问控制)层物理资源分配技术，以及网络层更加先进的QoS(Quality of Service， 服务质量)管理等。基于这些结论，很多研究开始考虑如何在非授权频段使用LTE技术，而在这些非授权频段使用LTE技术必须遵循WiFi使用的LBT(Listen Before Talk，先听后说)机制，即接入终端(Station，STD)在准备发射数据前先听链路上是否有其它链路数据，如果有，就会等待一定时间，如果没有，就会延迟一段时间发送数据。
如此一来，一方面，由于不能预先确定LTE系统是否能占到非授权频段的下行资源，UE(User Equipment，用户设备，也称为终端设备、终端或用户)基于现有的有效下行子帧测量到的CQI(Channel Quality Indicator，信道质量指示)将会极不准确，另一方面，即使能测量到CQI，由于UE也不能确保能占到非授权频段的上行资源，因此不能及时反馈最新的CQI信息。
为了解决上述问题，本发明实施例提供了一种非授权频段的信道信息反馈方法、装置以及通信系统。
根据本实施例的第一方面，提供了一种非授权频段的信道信息反馈方法，该方法应用于用户设备(UE)，其中，所述方法包括：
根据基站的配置确定反馈信道信息的子帧，并根据反馈信道信息的子帧确定测量信道质量的子帧；
检测所述测量信道质量的子帧是否存在预定义的参考信号；
在所述测量信道质量的子帧存在预定义的参考信号时，在反馈信道信息的子帧上报对所述测量信道质量的子帧的信道质量测量结果。
根据本实施例的第二方面，提供了一种非授权频段的信道信息反馈方法，该方法应用于基站(eNB)，其中，所述方法包括：
配置反馈信道信息的子帧，以便用户设备根据该反馈信道信息的子帧确定测量信道质量的子帧，并在该测量信道质量的子帧存在预定义的参考信号时，对该测量信道质量的子帧进行信道质量测量并在反馈信道信息的子帧上报信道质量测量结果。
根据本实施例的第三方面，提供了一种非授权频段的信道信息反馈方法，该方法应用于用户设备(UE)，其中，所述方法包括：
根据基站的信道质量测量请求确定反馈信道信息的子帧；
在所述反馈信道信息的子帧不是上行子帧时，在下一个上行子帧反馈对与所述上行子帧的距离大于等于4且与所述上行子帧最近的一个下行子帧或特殊子帧的信道 质量测量结果。
根据本实施例的第四方面，提供了一种非授权频段的信道信息反馈方法，该方法应用于基站(eNB)，其中，所述方法包括：
向用户设备发送信道质量测量请求，以便用户设备根据所述信道质量测量请求确定反馈信道信息的子帧，并在所述反馈信道信息的子帧不是上行子帧时，在下一个子帧上报对与所述上行子帧的距离大于等于4且与所述上行子帧最近的一个下行子帧或特殊子帧的信道质量测量结果。
根据本实施例的第五方面，提供了一种非授权频段的信道信息反馈方法，该方法应用于用户设备(UE)，其中，所述方法包括：
检测预定义的参考信号；
在检测到预定义的参考信号时，根据所述预定义的参考信号所在的子帧确定反馈信道信息的子帧；
在反馈信道信息的子帧上报对所述预定义的参考信号所在的子帧的信道质量测量结果。
根据本实施例的第六方面，提供了一种非授权频段的信道信息反馈方法，该方法应用于基站(eNB)，其中，所述方法包括：
在所述基站通过竞争占到非授权频段时，发送预定义的参考信号，以便用户设备在检测到该预定义的参考信号时，对该预定义的参考信号所在的子帧进行信道质量测量，并在反馈信道信息的子帧上报对所述子帧的信道质量测量结果。
根据本实施例的第七方面，提供了一种非授权频段的信道信息反馈装置，该装置应用于用户设备(UE)，其中，所述装置包括：
确定单元，其根据基站的配置确定反馈信道信息的子帧，并根据反馈信道信息的子帧确定测量信道质量的子帧；
检测单元，其检测所述测量信道质量的子帧是否存在预定义的参考信号；
反馈单元，其在所述检测单元检测到所述测量信道质量的子帧存在预定义的参考信号时，在反馈信道信息的子帧上报对所述测量信道质量的子帧的信道质量测量结果。
根据本实施例的第八方面，提供了一种非授权频段的信道信息反馈装置，该装置应用于基站(eNB)，其中，所述装置包括：
配置单元，其配置反馈信道信息的子帧，以便用户设备根据该反馈信道信息的子帧确定测量信道质量的子帧，并在该测量信道质量的子帧存在预定义的参考信号时，对该测量信道质量的子帧进行信道质量测量并在反馈信道信息的子帧上报信道质量测量结果。
根据本实施例的第九方面，提供了一种非授权频段的信道信息反馈装置，该装置应用于用户设备(UE)，其中，所述装置包括：
确定单元，其根据基站的信道质量测量请求确定反馈信道信息的子帧；
反馈单元，其在所述反馈信道信息的子帧不是上行子帧时，在下一个上行子帧反馈对与所述上行子帧的距离大于等于4且与所述上行子帧最近的一个下行子帧或特殊子帧的信道质量测量结果。
根据本实施例的第十方面，提供了一种非授权频段的信道信息反馈装置，该装置应用于基站(eNB)，其中，所述装置包括：
发送单元，其向用户设备发送信道质量测量请求，以便用户设备根据所述信道质量测量请求确定反馈信道信息的子帧，并在所述反馈信道信息的子帧不是上行子帧时，在下一个子帧上报对与所述上行子帧的距离大于等于4且与所述上行子帧最近的一个下行子帧或特殊子帧的信道质量测量结果。
根据本实施例的第十一方面，提供了一种非授权频段的信道信息反馈装置，该装置应用于用户设备(UE)，其中，所述装置包括：
检测单元，其检测预定义的参考信号；
确定单元，其在所述检测单元检测到预定义的参考信号时，根据所述预定义的参考信号所在的子帧确定反馈信道信息的子帧；
反馈单元，其在反馈信道信息的子帧上报对所述预定义的参考信号所在的子帧的信道质量测量结果。
根据本实施例的第十二方面，提供了一种非授权频段的信道信息反馈装置，该装置应用于基站(eNB)，其中，所述装置包括：
发送单元，其在所述基站通过竞争占到非授权频段时，发送预定义的参考信号，以便用户设备在检测到该预定义的参考信号时，对该预定义的参考信号所在的子帧进行信道质量测量，并在反馈信道信息的子帧上报对所述子帧的信道质量测量结果。
根据本实施例的第十三方面，提供了一种用户设备，所述用户设备包括前述第七 方面、第九方面或第十一方面所述的非授权频段的信道信息反馈装置。
根据本实施例的第十四方面，提供了一种基站，所述基站包括前述第八方面、第十方面或第十二方面所述的非授权频段的信道信息反馈装置。
根据本实施例的第十五方面，提供了一种通信系统，所述通信系统包括前述第十三方面所述的用户设备和前述第十四方面所述的基站。
本发明实施例的有益效果在于：通过本发明实施例，避免了在非授权频段使用LTE技术时的CQI测量和报告错误。
参照后文的说明和附图，详细公开了本发明的特定实施方式，指明了本发明的原理可以被采用的方式。应该理解，本发明的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
所包括的附图用来提供对本发明实施例的进一步的理解，其构成了说明书的一部分，用于例示本发明的实施方式，并与文字描述一起来阐释本发明的原理。显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其它的附图。在附图中：
图1是在非授权频段竞争使用非授权频段的资源的一个场景示意图；
图2是在非授权频段竞争使用非授权频段的资源的另一个场景示意图；
图3是用户设备根据第n个子帧的CQI请求在第m个子帧上报CQI的示意图；
图4是实施例1的非授权频段的信道信息反馈方法的流程图；
图5是实施例2的非授权频段的信道信息反馈方法的流程图；
图6是实施例3的非授权频段的信道信息反馈方法的流程图；
图7是实施例3的一个应用场景的示意图；
图8是实施例4的非授权频段的信道信息反馈方法的流程图；
图9是实施例5的非授权频段的信道信息反馈方法的流程图；
图10是实施例6的非授权频段的信道信息反馈方法的流程图；
图11是对应实施例1的方法的非授权频段的信道信息反馈装置的组成示意图；
图12是对应实施例2的方法的非授权频段的信道信息反馈装置的组成示意图；
图13是对应实施例3的方法的非授权频段的信道信息反馈装置的组成示意图；
图14是对应实施例4的方法的非授权频段的信道信息反馈装置的组成示意图；
图15是对应实施例5的方法的非授权频段的信道信息反馈装置的组成示意图；
图16是对应实施例6的方法的非授权频段的信道信息反馈装置的组成示意图；
图17是本实施例的用户设备的组成示意图；
图18是本实施例的基站的组成示意图；
图19是本实施例的通信系统的拓扑结构示意图。
具体实施方式
参照附图，通过下面的说明书，本发明的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本发明的特定实施方式，其表明了其中可以采用本发明的原则的部分实施方式，应了解的是，本发明不限于所描述的实施方式，相反，本发明包括落入所附权利要求的范围内的全部修改、变型以及等同物。下面结合附图对本发明的各种实施方式进行说明。这些实施方式只是示例性的，不是对本发明的限制。
一般而言，LTE使用非授权频段资源可以有图1和图2所示的两种典型场景(不限于)。如图1所示，第一种场景为LTE的eNB(包括小基站Small cell)与WiFi的AP竞争使用某个非授权频段，与LTE系统竞争的是另一个WiFi系统，两个系统采用的制式不同，由于WiFi系统在非授权频段已经使用非常成熟，作为新加入的LTE系统，必须保证不会对正在使用该频段的WiFi系统造成干扰才可以占用该信道，或者如果检测发现该信道未被WiFi使用，则可以占用一段时间，在LTE占用的时间内，LTE的基站可以和LTE的UE进行通信和数据传输。如图2所示，另一种场景为LTE的基站与另一个LTE的基站竞争，这两个LTE基站可以是同一个运营商的两个eNB，也可以是不同运营商的两个eNB。与图1所示的场景不同的是，这两个竞争基站采用的制式相同。
不管是图1所示的场景还是图2所示的场景，一旦一个LTE基站检测到该非授 权频段为空闲状态，该LTE基站可以发送前导信号(preamble)或者能标示该信号为LTE信号的其它信号，该信号用于标示该LTE基站已经占用了该非授权频段资源，可以用于随后的数据传输。
对于LTE系统来说，在进行数据传输之前，基站必须首先获得基站和UE端的信道质量，该信道质量通过UE测量基站在固定位置和时刻发送的参考信号(reference signal)来获得，UE获得信道质量测量结果后，量化成CQI(Channel Quality Indicator，信道质量指示)通过PUCCH(Physical Uplink Control CHannel，物理上行链路控制信道)或者PUSCH(Physical Uplink Shared Channel，物理上行共享信道)反馈给基站；而基站发送的参考信号可以是前导码(preamble)，或者是CRS(Cell-specific reference signal，小区专用参考信号)，也可以是CSI-RS(Channel Status Information Reference Signal，信道状态信息参考信号)。
考虑到网络配置的复杂性，CQI测量和反馈时隙在现在的标准规定中有明确规定。首先，第n个子帧的CQI报告是基于UE端的CQI测量结果，这个测量都是基于一种已知的参考信号资源做检测，该参考信号资源为第n-nCQI_ref个下行子帧或者特殊子帧。对于周期性CQI反馈，nCQI_ref必须是一个大于等于4的最小整数，使得这个子帧(第n-nCQI_ref个子帧)为一个有效下行子帧或者特殊子帧。而对于非周期性CQI反馈来说，如果基站通过PDCCH触发CQI反馈的话，该nCQI_ref的值必须选择使得参考信号资源对应的有效下行子帧就是该PDCCH所占的下行子帧。对于“有效下行子帧或者特殊子帧”的定义可以参考现有标准，简单来说就是，如果基站配置该子帧为下行子帧或者特殊子帧，则它就是一个有效下行子帧或者特殊子帧。
如果考虑在非授权频段采用竞争机制来接入的LTE系统来说，由于它不能预测下一个时刻是否能竞争获得该信道的使用，因此也就无法通过预先配置未来传输时使用的帧结构，即哪些是下行子帧、特殊子帧或者上行子帧等，因此就无法预先确定的通知UE在哪个子帧上测量参考信号，导致CQI上报的错误。
比如：如果基站配置UE在第n个子帧时刻进行CQI上报，按照现有标准，UE需要测量第n-4个子帧内的参考信号。但是如果第n-4个子帧时LTE的eNB没有占到这个非授权信道(原因是有可能WiFi已经占用了该信道)，但是根据标准中的定义，对于FDD系统，所有的下行子帧都是有效下行子帧，UE只能反馈n-4个子帧上的测量结果。但是由于该子帧上没有LTE的参考信号，测量到的CQI将有严重偏差，最 终导致eNB按照该CQI选择的传输方式传输数据不成功。对于TDD系统，即使预先配置的传输的帧结构中存在有效下行子帧，但是如果该有效下行子帧并没有被LTE的eNB竞争得到，也会导致最终测量到的CQI严重不准确。
另一方面，即使LTE系统的eNB占到了非授权频段资源，按照通常理解，这种占用只能持续一段时间，之后必须释放出来，供其它系统比如WiFi的AP(Access Point，接入点)或者LTE的eNB竞争，如果按照现有标准，对于非周期CQI反馈，如果eNB在第n个子帧触发UE反馈，则该UE需要测量该第n个子帧上的参考信号，然后在第n+4个子帧(对应为上行子帧)上报测量结果，然后由于不确定该子帧时刻UE是否能占到该信道，导致CQI不能及时上报。
如图3所示，第n+4个子帧为其它系统如WiFi所占用，这样，UE只能等到下一个上行子帧上传CQI，比如，在第m个子帧时刻，UE能占到该非授权信道用作上行传输，因此可以在该子帧将在第n个子帧测量到的CQI反馈。然而，如果如图3中所示，第n+3个子帧时，eNB已经占用了信道在发送PDSCH下行数据，通常这个数据中会含有参考信号，相对来说，这个参考信号比第n个子帧的参考信号更准确反映现有信道的质量，但是目前的标准不支持在第m个子帧反馈利用第n+3个子帧的参考信号的CQI测量数据。在第m个子帧反馈第n个子帧的CQI测量结果会导致信道测量数据过时，因此是不准确的。
可见，一方面，由于不能预先确定LTE系统是否能占到非授权频段的下行资源，UE基于现有有效下行子帧测量到的CQI将会极不准确，另一方面，即使能测量到CQI，由于UE也不能确保能占到非授权频段的上行资源，因此不能及时反馈最新的CQI信息。
下面结合附图对本发明实施例进行说明。
实施例1
本实施例提供了一种非授权频段的信道信息反馈方法，该方法应用于用户设备(UE)，图4是该方法的流程图，请参照图4，该方法包括：
步骤401：用户设备根据基站的配置确定反馈信道信息的子帧；
步骤402：所述用户设备根据反馈信道信息的子帧确定测量信道质量的子帧；
步骤403：所述用户设备检测测量信道质量的子帧是否存在预定义的参考信号；
步骤404：如果测量信道质量的子帧存在预定义的参考信号，则所述用户设备在 反馈信道信息的子帧上报对所述测量信道质量的子帧的信道质量测量结果。
在本实施例中，基站可以配置用户设备反馈信道信息的子帧，用户设备根据基站的配置，可以确定反馈信道信息的子帧，进而，用户设备可以根据该反馈信道信息的子帧确定测量信道质量的子帧。例如，对于周期性CQI反馈，基站配置UE在第n个上行子帧进行CQI反馈，则UE可以确定测量信道质量的子帧为第n-nCQI_ref个子帧，也即，UE要对第n-nCQI_ref个子帧进行信道质量的测量，并在第n个子帧反馈测量结果。
在本实施例中，与现有技术不同的是，用户设备在对测量信道质量的子帧(以前述为例，第n-nCQI_ref个子帧)进行信道质量测量之前，先检测该测量信道质量的子帧是否存在预定义的参考信号，用户设备只在该测量信道质量的子帧存在预定义的参考信号的情况下才会在反馈信道信息的子帧上报对该测量信道质量的子帧的信道质量测量结果。该预定义的参考信号是基站在其有效的下行子帧或特殊子帧内发送的，检测到该参考信号，也就意味着该子帧是一个有效的下行子帧或特殊子帧，而不是其它系统(例如wifi系统)所占用的资源，基于该参考信号对该子帧进行信道质量的测量是相对准确的，由此解决了用户设备不能预先确定LTE系统是否能占到非授权频段的下行资源，从而基于现有的有效下行子帧或特殊子帧测量到的CQI极不准确的问题。该预定义的参考信号可以是CRS，也可以是preamble或者CSI-RS等其它参考信号。
在本实施例中，如果用户设备检测到测量信道质量的子帧存在预定义的参考信号，则该用户设备可以基于该测量信道质量的子帧进行信道质量的测量，以便在反馈信道信息的子帧上报对该子帧的测量结果。可选的，该用户设备还可以将测量得到的该测量结果存储下来，或者更新已经存储的测量结果，以便后续使用。
在本实施例中，如果用户设备检测到测量信道质量的子帧不存在预定义的参考信号，那么可能基站并未占到该测量信道质量的子帧，也就是说，该测量信道质量的子帧被其它系统所占用，则该用户设备可以在反馈信道信息的子帧上报之前存储的信道质量测量结果(步骤405)，而不是反馈对所述测量信道质量的子帧的测量结果，这样，尽管之前存储的测量结果可能已经过期，但相比于上报一个基于其它系统所占用的资源的测量结果，该测量结果更准确一些。
在本实施例中，该用户设备可以通过与该用户设备连接的主小区(Pcell)的 PUCCH上传上述测量结果，也可以通过与该用户设备连接的主小区的PUSCH上传改测量结果，但本实施例并不以此作为限制。
在本实施例中，相对于目前标准(TS36.213)中所定义的有效下行子帧或特殊子帧，其定义可以修改为“it is configured as a downlink subframe or a special subframe for that UE,or it is identified as a downlink subframe or a special subframe for that UE if the UE could detect some pre-defined reference signal(for example CRS,preamble,etc.,),on that subframe...”，也即，其被配置为一个下行子帧或一个特殊子帧，或者，如果UE能在一个子帧内检测到预定义的参考信号，则该子帧被识别为一个下行子帧或一个特殊子帧。
通过本实施例的方法，解决了不能预先确定LTE系统是否能占到非授权频段的下行资源，从而基于现有的有效下行子帧或特殊子帧测量到的CQI极不准确的问题。
实施例2
本实施例提供了一种非授权频段的信道信息反馈方法，该方法应用于基站(eNB)，其是对应实施例1的方法的基站侧的处理，该基站可以是LTE系统中的小基站(small cell)，也可以其它基站，图5是该方法的流程图，请参照图5，该方法包括：
步骤501：基站配置反馈信道信息的子帧，以便用户设备根据该反馈信道信息的子帧确定测量信道质量的子帧，并在该测量信道质量的子帧存在预定义的参考信号时，对该测量信道质量的子帧进行信道质量测量并在反馈信道信息的子帧上报信道质量测量结果。
在本实施例中，如前所述，基站配置UE进行CQI反馈的子帧，例如第n个子帧，UE由此可以确定测量信道质量的子帧，也即第n-nCQI_ref个子帧，当该第n-nCQI_ref个子帧存在预定的参考信号时，UE可以基于该第n-nCQI_ref个子帧进行信道质量的测量，并在第n个子帧反馈测量结果，也即相应的CQI值。由此解决了UE不能预先确定LTE系统是否能占到非授权频段的下行资源，从而基于现有的有效下行子帧或特殊子帧测量到的CQI极不准确的问题。对于UE的处理详见实施例1。
在本实施例中，该基站可以通过与该用户设备连接的主小区(Pcell)的PDCCH或RRC信令传输配置所述反馈信道信息的子帧的信令，也可以通过其它信道和/或信 令传输上述配置信令。
实施例3
本实施例提供了一种非授权频段的信道信息反馈方法，该方法应用于用户设备(UE)，图6是该方法的流程图，请参照图6，该方法包括：
步骤601：用户设备根据基站的信道质量测量请求确定反馈信道信息的子帧；
步骤601：如果所述反馈信道信息的子帧不是上行子帧，则在下一个上行子帧反馈对与所述上行子帧的距离大于等于4且与所述上行子帧最近的一个下行子帧或特殊子帧的信道质量测量结果。
图7是本实施例的一个应用场景的示意图，如图7所示，对于非周期性CQI反馈，eNB在第n个子帧发送了信道质量测量请求CQI request，UE在接收到该CQI request之后，根据该CQI request所在的子帧(第n个子帧)即可确定反馈信道信息的子帧，也即第n+4个子帧，然而，由于该第n+4个子帧已经被其它系统占用，则UE可以在下一个上行子帧，也即第m个子帧进行CQI的反馈。在本实施例中，该UE不是反馈第n个子帧的信道质量测量结果，而是反馈第n+3个子帧的信道质量测量结果，该第n+3个子帧与第m个子帧的距离需要大于等于4，并且相对于与第m个子帧的距离需要大于等于4的子帧，该第n+3个子帧与该第m个子帧的距离最近。由此，由于UE反馈的是最新的下行子帧的CQI，保证了该CQI能最准确地反映数据传输时的信道质量，解决了UE不能确保能占到非授权频段的上行资源，因此不能及时反馈最新的CQI信息的问题。
在本实施例中，该用户设备可以基于与所述上行子帧的距离大于等于4且与所述上行子帧最近的一个下行子帧或特殊子帧(例如，第n+3个子帧)内的参考信号，对该下行子帧或所述特殊子帧进行信道质量测量。其中，该子帧是一个下行子帧，在该子帧中也包含一些参考信号，则该UE可以基于该参考信号对该子帧进行信道质量的测量。
在本实施例中，相对于目前标准(TS36.213)中所定义的对于非周期CQI反馈UE需要测量的参考信号的位置，其定义可以修改为“The CSI reference resource is defined by a single downlink or special subframe n-nCQI_ref,…where for aperiodic CSI reporting,…nCQI_ref is minimum{the smallest value greater than or equal to 4,such that it  corresponds to a valid downlink or valid special subframe，a value such that the reference resource is in the same valid downlink or valid special subframe as the corresponding CSI request in an uplink DCI format}.”也即，该CSI参考资源通过一个单个的下行子帧或特殊子帧n-nCQI_ref来定义，其中，对于非周期性CSI上报，n-nCQI_ref为下面两个值中的最小值：大于等于4的最小值，使得该子帧对应一个有效的下行子帧或有效特殊子帧；另一个值，使得参考资源位于一个有效下行子帧或者有效特殊子帧，该子帧与发送上行链路DCI格式的CSI请求的子帧为同一子帧。
通过本实施例的方法，解决了由于UE不能确保能占到非授权频段的上行资源，因此不能及时反馈最新的CQI信息的问题。
实施例4
本实施例还提供了一种非授权频段的信道信息反馈方法，该方法应用于基站(eNB)，其是对应实施例3的方法的基站侧的处理，该基站可以是LTE系统中的小基站(small cell)，也可以其它基站，图8是该方法的流程图，请参照图8，该方法包括：
步骤801：基站向用户设备发送信道质量测量请求，以便用户设备根据所述信道质量测量请求确定反馈信道信息的子帧，并在所述反馈信道信息的子帧不是上行子帧时，在下一个上行子帧上报对与所述上行子帧的距离大于等于4且与所述上行子帧最近的一个下行子帧或特殊子帧的信道质量测量结果。
其中，基站发送信道质量测量请求的方法可以参照现有标准，用户设备的处理过程详见实施例3。
通过本实施例的方法，解决了由于UE不能确保能占到非授权频段的上行资源，因此不能及时反馈最新的CQI信息的问题。
实施例5
本实施例提供了一种非授权频段的信道信息反馈方法，该方法应用于用户设备(UE)，图9是该方法的流程图，请参照图9，该方法包括：
步骤901：用户设备检测预定义的参考信号；
步骤902：如果检测到预定义的参考信号，则根据所述预定义的参考信号所在的 子帧确定反馈信道信息的子帧；
步骤903：在反馈信道信息的子帧上报对所述预定义的参考信号所在的子帧的信道质量测量结果。
在本实施例中，改变了测量和报告的时序要求，也即，取消了n和nCQI_ref的限制，基站以显式(explicit)地配置CQI反馈或者触发非周期CQI反馈改为了隐式(implicit)的指示CQI反馈。也即，一旦基站占到非授权频段的资源，即发送预定义的参考信号，UE在检测到该预定义的参考信号时，根据该预定义的参考信号所在的子帧确定反馈信道信息的子帧，并在该反馈信道信息的子帧上报测量结果。
例如，如果UE检测到第n个子帧存在预定义的参考信号，则该UE可以在第n+k个子帧反馈CQI，这里的k可以是2、3、或4，优选为4。由此，不需要等到基站在PDCCH上通过信令触发CQI反馈，避免了非授权频段使用LTE技术时的CQI测量和报告错误的问题。
在本实施例中，该预定义的参考信号可以是preamble，也可以是CRS，还可以是CSI-RS等。
在本实施例中，当UE检测到预定义的参考信号时，即可基于该预定义的参考信号所在的子帧进行信道质量测量，以便在反馈信道信息的子帧上报测量结果。
通过本实施例的方法，避免了非授权频段使用LTE技术时的CQI测量和报告错误的问题。
实施例6
本实施例还提供了一种非授权频段的信道信息反馈方法，该方法应用于基站(eNB)，其是对应实施例5的方法的基站侧的处理，该基站可以是LTE系统中的小基站(small cell)，也可以其它基站，图10是该方法的流程图，请参照图10，该方法包括：
步骤1001：基站在通过竞争占到非授权频段时，发送预定义的参考信号，以便用户设备在检测到该预定义的参考信号时，对该预定义的参考信号所在的子帧进行信道质量测量，并在反馈信道信息的子帧上报对所述子帧的信道质量测量结果。
其中，如前所述，一旦eNB占到非授权频段，则发送预定义的参考信号，可以是preamble，或者是CRS，CSI-RS等信号，当UE检测到第n个子帧存在参考信号 时，则基于第n个子帧进行信道质量的测量，并在第n+k个子帧反馈测量结果，也即CQI的值，k值可以是2,3,4，优选为4。这种方式不需要等到eNB在PDCCH上通过信令触发反馈CQI，避免了非授权频段使用LTE技术时的CQI测量和报告错误的问题。
以上通过六个实施例对本实施例的方法进行了说明，在实际实施过程中，上述实施例的方法可以合并使用，例如实施例1、2的方法可以和实施例3、4的方法合并。由于非授权频段资源采用竞争而非集中分配机制来使用，传统的基于基站配置或者触发的CQI报告无法保证UE端测量到的CQI为有效数据，通过本实施例1-6的方法，克服了这一缺陷，避免了在非授权频段使用LTE技术时的CQI测量和报告错误。
实施例7
本实施例提供了一种非授权频段的信道信息反馈装置，该装置可以应用于用户设备。由于该装置解决问题的原理与实施例1的方法类似，因此其具体的实施可以参照实施例1的方法的实施，内容相同之处不再重复说明。
图11是该装置的组成示意图，请参照图11，该非授权频段的信道信息反馈装置1100包括：确定单元1101、检测单元1102和反馈单元1103。
确定单元1101用于根据基站的配置确定反馈信道信息的子帧，并根据反馈信道信息的子帧确定测量信道质量的子帧。
检测单元1102用于检测该测量信道质量的子帧是否存在预定义的参考信号。
反馈单元1103用于在检测单元1102检测到测量信道质量的子帧存在预定义的参考信号时，在反馈信道信息的子帧上报对所述测量信道质量的子帧的信道质量测量结果。
在本实施例中，该装置还可以包括：
测量单元1104，其在检测单元1102检测到测量信道质量的子帧存在预定义的参考信号时，对测量信道质量的子帧进行信道质量测量。
在本实施例中，反馈单元1103还由于在检测单元检测到所述测量信道质量的子帧不存在预定义的参考信号时，在反馈信道信息的子帧上报之前存储的信道质量测量结果。
在本实施例中，反馈单元可以通过与用户设备连接的主小区的PUCCH或PUSCH上报上述信道质量测量结果。
通过本实施例的装置，避免了在非授权频段使用LTE技术时的CQI测量和报告错误。
实施例8
本实施例提供了一种非授权频段的信道信息反馈装置，该装置可以应用于基站。由于该装置解决问题的原理与实施例2的方法类似，因此其具体的实施可以参照实施例2的方法的实施，内容相同之处不再重复说明。
图12是该装置的组成示意图，请参照图12，该非授权频段的信道信息反馈装置1200包括：配置单元1201，其用于配置反馈信道信息的子帧，以便用户设备根据该反馈信道信息的子帧确定测量信道质量的子帧，并在该测量信道质量的子帧存在预定义的参考信号时，对该测量信道质量的子帧进行信道质量测量并在反馈信道信息的子帧上报信道质量测量结果。
在本实施例中，该配置单元1201可以通过与用户设备连接的主小区的PDCCH或RRC信令传输配置反馈信道信息的子帧的信令。
通过本实施例的装置，避免了在非授权频段使用LTE技术时的CQI测量和报告错误。
实施例9
本实施例提供了一种非授权频段的信道信息反馈装置，该装置可以应用于用户设备。由于该装置解决问题的原理与实施例3的方法类似，因此其具体的实施可以参照实施例3的方法的实施，内容相同之处不再重复说明。
图13是该装置的组成示意图，请参照图13，该非授权频段的信道信息反馈装置1300包括：确定单元1301和反馈单元1302。
确定单元1301用于根据基站的信道质量测量请求确定反馈信道信息的子帧。
反馈单元1302用于在反馈信道信息的子帧不是上行子帧时，在下一个上行子帧反馈对与该上行子帧的距离大于等于4且与该上行子帧最近的一个下行子帧或特殊子帧的信道质量测量结果。
在本实施例中，该装置还可以包括：
测量单元1303，其基于与该上行子帧的距离大于等于4且与该上行子帧最近的一个下行子帧或特殊子帧内的参考信号，对上述下行子帧或上述特殊子帧进行信道质量测量。
通过本实施例的装置，避免了在非授权频段使用LTE技术时的CQI测量和报告错误。
实施例10
本实施例提供了一种非授权频段的信道信息反馈装置，该装置可以应用于基站。由于该装置解决问题的原理与实施例4的方法类似，因此其具体的实施可以参照实施例4的方法的实施，内容相同之处不再重复说明。
图14是该装置的组成示意图，请参照图14，该非授权频段的信道信息反馈装置1400包括：发送单元1401，其向用户设备发送信道质量测量请求，以便用户设备根据该信道质量测量请求确定反馈信道信息的子帧，并在该反馈信道信息的子帧不是上行子帧时，在下一个子帧上报对与该上行子帧的距离大于等于4且与该上行子帧最近的一个下行子帧或特殊子帧的信道质量测量结果。
通过本实施例的装置，避免了在非授权频段使用LTE技术时的CQI测量和报告错误。
实施例11
本发明实施例提供了一种非授权频段的信道信息反馈装置，该装置可以应用于用户设备。由于该装置解决问题的原理与实施例5的方法类似，因此其具体的实施可以参照实施例5的方法的实施，内容相同之处不再重复说明。
图15是该装置的组成示意图，请参照图15，该非授权频段的信道信息反馈装置1500包括：检测单元1501、确定单元1502和反馈单元1503。
检测单元1501用于检测预定义的参考信号。
确定单元1502用于在检测单元1501检测到预定义的参考信号时，根据该预定义的参考信号所在的子帧确定反馈信道信息的子帧。
反馈单元1503用于在反馈信道信息的子帧上报对该预定义的参考信号所在的子 帧的信道质量测量结果。
在本实施例中，该装置还可以包括：
测量单元1504，其对该预定义的参考信号所在的子帧进行信道质量测量。
通过本实施例的装置，避免了在非授权频段使用LTE技术时的CQI测量和报告错误。
实施例12
本发明实施例提供了一种非授权频段的信道信息反馈装置，该装置可以应用于基站。由于该装置解决问题的原理与实施例6的方法类似，因此其具体的实施可以参照实施例6的方法的实施，内容相同之处不再重复说明。
图16是该装置的组成示意图，请参照图16，该非授权频段的信道信息反馈装置1600包括：发送单元1601，其在该基站通过竞争占到非授权频段时，发送预定义的参考信号，以便用户设备在检测到该预定义的参考信号时，对该预定义的参考信号所在的子帧进行信道质量测量，并在反馈信道信息的子帧上报对该子帧的信道质量测量结果。
通过本实施例的装置，避免了在非授权频段使用LTE技术时的CQI测量和报告错误。
实施例13
本发明实施例还提供了一种用户设备，其中，该用户设备包括实施例7、9、11所述的非授权频段的信道信息反馈装置。
图17是本发明实施例的用户设备的组成示意图。如图17所示，该用户设备1700可以包括中央处理器1701和存储器1702；存储器1702耦合到中央处理器1701。值得注意的是，该图是示例性的；还可以使用其它类型的结构，来补充或代替该结构，以实现电信功能或其它功能。
在一个实施方式中，非授权频段的信道信息反馈装置的功能可以被集成到中央处理器1701中，由中央处理器1701实现实施例7、9、11所述的非授权频段的信道信息反馈装置的功能，其中关于非授权频段的信道信息反馈装置的功能被合并于此，在此不再赘述。
在另一个实施方式中，非授权频段的信道信息反馈装置可以与中央处理器1701分开配置，例如可以将非授权频段的信道信息反馈装置配置为与中央处理器1701连接的芯片，通过中央处理器1701的控制来实现非授权频段的信道信息反馈装置的功能。
如图17所示，该用户设备1700还可以包括：通信模块1703、输入单元1704、音频处理单元1705、显示器1706、电源1707。值得注意的是，用户设备1700也并不是必须要包括图17中所示的所有部件；此外，用户设备1700还可以包括图17中没有示出的部件，可以参考现有技术。
如图17所示，中央处理器1701有时也称为控制器或操作控件，可以包括微处理器或其它处理器装置和/或逻辑装置，该中央处理器1701接收输入并控制用户设备1700的各个部件的操作。
其中，存储器1702，例如可以是缓存器、闪存、硬驱、可移动介质、易失性存储器、非易失性存储器或其它合适装置中的一种或更多种。可储存上述与配置有关的信息，此外还可存储执行有关信息的程序。并且中央处理器1701可执行该存储器1702存储的该程序，以实现信息存储或处理等。其它部件的功能与现有类似，此处不再赘述。用户设备1700的各部件可以通过专用硬件、固件、软件或其结合来实现，而不偏离本发明的范围。
通过本实施例的用户设备，避免了在非授权频段使用LTE技术时的CQI测量和报告错误。
实施例14
本发明实施例还提供了一种基站，其中，该基站包括实施例8、10、12所述的非授权频段的信道信息反馈装置。
图18是本发明实施例的基站的一个实施方式的构成示意图。如图18所示，基站1800可以包括：中央处理器(CPU)1801和存储器1802；存储器1802耦合到中央处理器1801。其中该存储器1802可存储各种数据；此外还存储信息处理的程序，并且在中央处理器1801的控制下执行该程序，以接收用户设备发送的各种信息、并且向用户设备发送各种信息。
在一个实施方式中，非授权频段的信道信息反馈装置的功能可以被集成到中央处 理器1801中，由中央处理器1801实现实施例8、10、12所述的非授权频段的信道信息反馈装置的功能，其中关于非授权频段的信道信息反馈装置的功能被合并于此，在此不再赘述。
在另一个实施方式中，非授权频段的信道信息反馈装置可以与中央处理器1801分开配置，例如可以将非授权频段的信道信息反馈装置配置为与中央处理器1801连接的芯片，通过中央处理器1801的控制来实现非授权频段的信道信息反馈装置的功能。
此外，如图18所示，基站1800还可以包括：收发机1803和天线1804等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，基站1800也并不是必须要包括图18中所示的所有部件；此外，基站1800还可以包括图18中没有示出的部件，可以参考现有技术。
通过本实施例的基站，避免了在非授权频段使用LTE技术时的CQI测量和报告错误。
实施例15
本发明实施例还提供一种通信系统，图19是该通信系统的拓扑结构示意图，如图19所示，该通信系统1900包括：用户设备1901和基站1902。
其中，该基站1902被配置为为用户设备1901配置反馈信道信息的子帧，或者向用户设备1901发送信道质量测量请求，或者在通过竞争占到非授权频段时，发送预定义的参考信号等。此外，该基站1901还被配置为实现其信号收发的其它功能，此处不再赘述。其中，该基站可以通过实施例14的基站来实现，其内容被合并于此，在此不再赘述。
其中，用户设备1901被配置为与基站1901进行信息的交互，例如，根据基站配置的反馈信道信息的子帧确定测量信道质量的子帧，并在该测量信道质量的子帧存在预定义的参考信号时，对该测量信道质量的子帧进行信道质量测量并在反馈信道信息的子帧上报信道质量测量结果。再例如，根据基站发送的信道质量测量请求确定反馈信道信息的子帧，并在所述反馈信道信息的子帧不是上行子帧时，在下一个子帧上报对与所述上行子帧的距离大于等于4且与所述上行子帧最近的一个下行子帧或特殊子帧的信道质量测量结果。再例如，在检测到基站发送的预定义的参考信号时，对该 预定义的参考信号所在的子帧进行信道质量测量，并在反馈信道信息的子帧上报对所述子帧的信道质量测量结果。其中，该用户设备可以通过实施例13的用户设备来实现，其内容被合并于此，在此不再赘述。
通过本实施例的通信系统，避免了在非授权频段使用LTE技术时的CQI测量和报告错误。
本发明实施例还提供一种计算机可读程序，其中当在非授权频段的信道信息反馈装置或用户设备中执行所述程序时，所述程序使得计算机在所述缓存状态报告的处理装置或用户设备中执行实施例1、3、5所述的非授权频段的信道信息反馈方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在非授权频段的信道信息反馈装置或用户设备中执行实施例1、3、5所述的非授权频段的信道信息反馈方法。
本发明实施例还提供一种计算机可读程序，其中当在非授权频段的信道信息反馈装置或基站中执行所述程序时，所述程序使得计算机在所述缓存状态报告的处理装置或基站中执行实施例2、4、6所述的非授权频段的信道信息反馈方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得计算机在非授权频段的信道信息反馈装置或基站中执行实施例2、4、6所述的非授权频段的信道信息反馈方法。
本发明以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本发明涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。逻辑部件例如现场可编程逻辑部件、微处理器、计算机中使用的处理器等。本发明还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
以上结合具体的实施方式对本发明进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本发明保护范围的限制。本领域技术人员可以根据本发明的精神和原理对本发明做出各种变型和修改，这些变型和修改也在本发明的范围内。

Claims (8)

  1. 一种非授权频段的信道信息反馈装置，该装置应用于用户设备(UE)，其中，所述装置包括：
    确定单元，其根据基站的配置确定反馈信道信息的子帧，并根据反馈信道信息的子帧确定测量信道质量的子帧；
    检测单元，其检测所述测量信道质量的子帧是否存在预定义的参考信号；
    反馈单元，其在所述检测单元检测到所述测量信道质量的子帧存在预定义的参考信号时，在反馈信道信息的子帧上报对所述测量信道质量的子帧的信道质量测量结果。
  2. 根据权利要求1所述的装置，其中，所述装置还包括：
    测量单元，其在所述检测单元检测到所述测量信道质量的子帧存在预定义的参考信号时，对所述测量信道质量的子帧进行信道质量测量。
  3. 根据权利要求1所述的装置，其中，
    所述反馈单元在所述检测单元检测到所述测量信道质量的子帧不存在预定义的参考信号时，在反馈信道信息的子帧上报之前存储的信道质量测量结果。
  4. 根据权利要求3所述的装置，其中，
    所述反馈单元通过与所述用户设备连接的主小区的物理上行控制信道(PUCCH)或物理上行共享信道(PUSCH)上报所述信道质量测量结果。
  5. 一种非授权频段的信道信息反馈装置，该装置应用于用户设备(UE)，其中，所述装置包括：
    确定单元，其根据基站的信道质量测量请求确定反馈信道信息的子帧；
    反馈单元，其在所述反馈信道信息的子帧不是上行子帧时，在下一个上行子帧反馈对与所述上行子帧的距离大于等于4且与所述上行子帧最近的一个下行子帧或特殊子帧的信道质量测量结果。
  6. 根据权利要求5所述的装置，其中，所述装置还包括：
    测量单元，其基于与所述上行子帧的距离大于等于4且与所述上行子帧最近的一个下行子帧或特殊子帧内的参考信号，对所述下行子帧或所述特殊子帧进行信道质量测量。
  7. 一种非授权频段的信道信息反馈装置，该装置应用于用户设备(UE)，其中，所述装置包括：
    检测单元，其检测预定义的参考信号；
    确定单元，其在所述检测单元检测到预定义的参考信号时，根据所述预定义的参考信号所在的子帧确定反馈信道信息的子帧；
    反馈单元，其在反馈信道信息的子帧上报对所述预定义的参考信号所在的子帧的信道质量测量结果。
  8. 根据权利要求7所述的装置，其中，所述装置还包括：
    测量单元，其对所述预定义的参考信号所在的子帧进行信道质量测量。
PCT/CN2015/071700 2015-01-28 2015-01-28 非授权频段的信道信息反馈方法、装置以及通信系统 WO2016119138A1 (zh)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP15879349.7A EP3253143B8 (en) 2015-01-28 2015-01-28 Apparatus for feeding back channel information of unlicensed frequency band
JP2017539232A JP2018504045A (ja) 2015-01-28 2015-01-28 アンライセンスバンドのチャネル情報フィードバック方法、装置及び通信システム
PCT/CN2015/071700 WO2016119138A1 (zh) 2015-01-28 2015-01-28 非授权频段的信道信息反馈方法、装置以及通信系统
KR1020177021660A KR102003143B1 (ko) 2015-01-28 2015-01-28 비인가된 대역에 대한 채널 정보를 피드백하기 위한 방법 및 장치와, 통신 시스템
CN201580071907.XA CN107113815A (zh) 2015-01-28 2015-01-28 非授权频段的信道信息反馈方法、装置以及通信系统
US15/657,722 US20170324534A1 (en) 2015-01-28 2017-07-24 Method and Apparatus for Feeding back Channel Information for Unlicensed Band and Communication System

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/071700 WO2016119138A1 (zh) 2015-01-28 2015-01-28 非授权频段的信道信息反馈方法、装置以及通信系统

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/657,722 Continuation US20170324534A1 (en) 2015-01-28 2017-07-24 Method and Apparatus for Feeding back Channel Information for Unlicensed Band and Communication System

Publications (1)

Publication Number Publication Date
WO2016119138A1 true WO2016119138A1 (zh) 2016-08-04

Family

ID=56542139

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/071700 WO2016119138A1 (zh) 2015-01-28 2015-01-28 非授权频段的信道信息反馈方法、装置以及通信系统

Country Status (6)

Country Link
US (1) US20170324534A1 (zh)
EP (1) EP3253143B8 (zh)
JP (1) JP2018504045A (zh)
KR (1) KR102003143B1 (zh)
CN (1) CN107113815A (zh)
WO (1) WO2016119138A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080010208A1 (en) * 2006-07-06 2008-01-10 Motorola, Inc. Method and apparatus for communication by a secondary user of spectrum
CN102232307A (zh) * 2011-06-16 2011-11-02 华为技术有限公司 动态频谱分配方法、中心控制单元、基站及频谱分配系统
CN103001678A (zh) * 2011-09-10 2013-03-27 华为技术有限公司 多节点协作传输的方法和装置
WO2014119413A1 (ja) * 2013-01-29 2014-08-07 株式会社Ｎｔｔドコモ ユーザ端末、無線基地局及び適応変調符号化方法

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101637580B1 (ko) * 2009-03-04 2016-07-21 엘지전자 주식회사 다중 반송파 시스템에서 채널 상태 보고 방법 및 장치
WO2010140298A1 (ja) * 2009-06-02 2010-12-09 パナソニック株式会社 無線通信装置及び無線通信方法
CN101924609B (zh) * 2009-06-12 2013-03-13 中国移动通信集团公司 协作多点传输中上行数据的处理方法及相关装置
CN102013961B (zh) * 2009-11-05 2014-04-02 电信科学技术研究院 一种发送上行反馈信息的方法、系统和设备
CN105763299B (zh) * 2010-01-18 2019-11-15 Lg电子株式会社 用于在无线通信系统中提供信道质量信息的方法和设备
US9014024B2 (en) * 2010-10-04 2015-04-21 Qualcomm Incorporated Devices for determining a reference subframe and determining a mode
CN102468933B (zh) * 2010-11-15 2014-07-09 华为技术有限公司 一种信道状态信息的反馈方法、装置及系统
CN103477579B (zh) * 2011-04-13 2016-08-17 Lg电子株式会社 在无线通信系统中发送控制信息的方法和设备
CN102916785B (zh) * 2011-08-04 2017-04-12 华为技术有限公司 信息反馈方法、用户设备和基站
US9408103B2 (en) * 2011-10-26 2016-08-02 Broadcom Corporation Flexible measurements in unlicensed band
CN102347825B (zh) * 2011-11-02 2014-05-07 电信科学技术研究院 一种传输反馈信息的方法、系统和设备
KR20200035183A (ko) * 2012-01-26 2020-04-01 인터디지탈 패튼 홀딩스, 인크 Ｌｔｅ 공존에 대한 동적 파라미터 조절
US8923880B2 (en) * 2012-09-28 2014-12-30 Intel Corporation Selective joinder of user equipment with wireless cell
WO2014104854A1 (ko) * 2012-12-30 2014-07-03 엘지전자 주식회사 다중 셀 무선 통신 시스템에서 무선 자원 정보 공유 방법 및 이를 위한 장치
US9565593B2 (en) * 2013-05-20 2017-02-07 Qualcomm Incorporated Techniques for selecting subframe type or for interleaving signals for wireless communications over unlicensed spectrum
US9924396B2 (en) * 2013-06-19 2018-03-20 Sharp Kabushiki Kaisha Terminal device, base station device, integrated circuit, and radio communication method
CN105659653B (zh) * 2013-07-09 2019-08-02 Lg电子株式会社 用于测量支持改变无线电资源用途的无线通信系统中的信道状态的方法和装置
US9398563B2 (en) * 2013-08-23 2016-07-19 Qualcomm Incorporated LTE based multicast in unlicensed spectrum
US9681325B2 (en) * 2013-12-19 2017-06-13 Qualcomm Incorporated Channel and interference measurement in LTE/LTE-A networks including unlicensed spectrum

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080010208A1 (en) * 2006-07-06 2008-01-10 Motorola, Inc. Method and apparatus for communication by a secondary user of spectrum
CN102232307A (zh) * 2011-06-16 2011-11-02 华为技术有限公司 动态频谱分配方法、中心控制单元、基站及频谱分配系统
CN103001678A (zh) * 2011-09-10 2013-03-27 华为技术有限公司 多节点协作传输的方法和装置
WO2014119413A1 (ja) * 2013-01-29 2014-08-07 株式会社Ｎｔｔドコモ ユーザ端末、無線基地局及び適応変調符号化方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3253143A4 *

Also Published As

Publication number Publication date
EP3253143A1 (en) 2017-12-06
EP3253143B8 (en) 2021-03-31
KR20170102933A (ko) 2017-09-12
KR102003143B1 (ko) 2019-07-23
US20170324534A1 (en) 2017-11-09
EP3253143B1 (en) 2021-01-06
CN107113815A (zh) 2017-08-29
JP2018504045A (ja) 2018-02-08
EP3253143A4 (en) 2018-08-22

Similar Documents

Publication Publication Date Title
US11659428B2 (en) Method and radio node for handling CSI reporting
US20220150917A1 (en) Channel Occupancy Time Interval in Unlicensed Frequency Spectrum
US11742982B2 (en) Activation and deactivation of semi-persistent CSI reporting
WO2017114012A1 (zh) 信道测量信息的反馈方法、用户设备及基站
US20230269612A1 (en) Ultra-low latency csi timeline for urllc csi reporting
CN113271671A (zh) 波束管理方法及相关装置
BR112020005024A2 (pt) método e aparelho de processamento de sinal
WO2020098522A1 (zh) 信道状态信息的传输方法和装置
WO2016044995A1 (zh) 非授权频段的通信方法、装置和系统
WO2018227544A1 (zh) 随机接入信号传输方法及相关产品
EP3738262B1 (en) Activation and deactivation of semi-persistent csi reporting
WO2020156562A1 (zh) 通信方法和装置
WO2016119138A1 (zh) 非授权频段的信道信息反馈方法、装置以及通信系统
US20170257848A1 (en) Measurement-relates signaling for wireless communication
CN115150850A (zh) 一种非周期定位参考信号prs的触发方法和装置
JP2020025355A (ja) アンライセンスバンドのチャネル情報フィードバック方法、装置及び通信システム
EP4224915A1 (en) Measurement reporting method and apparatus
WO2023207744A1 (zh) 资源调度方法、设备、装置及存储介质

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15879349

Country of ref document: EP

Kind code of ref document: A1

REEP Request for entry into the european phase

Ref document number: 2015879349

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2017539232

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20177021660

Country of ref document: KR

Kind code of ref document: A