WO2011147349A1 - 一种信道状态信息上报方法和设备 - Google Patents

一种信道状态信息上报方法和设备 Download PDF

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Publication number
WO2011147349A1
WO2011147349A1 PCT/CN2011/075254 CN2011075254W WO2011147349A1 WO 2011147349 A1 WO2011147349 A1 WO 2011147349A1 CN 2011075254 W CN2011075254 W CN 2011075254W WO 2011147349 A1 WO2011147349 A1 WO 2011147349A1
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Prior art keywords
reporting
channel quality
measurement
subframe
low
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PCT/CN2011/075254
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English (en)
French (fr)
Inventor
张永平
孙静原
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华为技术有限公司
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Publication of WO2011147349A1 publication Critical patent/WO2011147349A1/zh

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Classifications

    • 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
    • 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
    • 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
    • H04L1/0028—Formatting
    • H04L1/003—Adaptive formatting arrangements particular to signalling, e.g. variable amount of bits

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a channel state information reporting method and device.
  • Heterogeneous Networks can reduce the spatial distance between the transmitting and receiving nodes and the user equipment by deploying Low Power Nodes (LPNs) within the coverage of Macro Evolved Node B (MeNB). , effectively reduce path loss and improve system throughput and overall network efficiency.
  • the low power nodes include, but are not limited to, small wireless communication nodes such as home base stations. There may be network elements of different transmit powers in the HetNet network, and the coverage of the LPN is within the corresponding macro base station.
  • the HetNet network based on the LTE (Long Term Evolution) system adopts OFDM (Orthogonal Frequency Division Multiplexing) modulation, and the frequency reuse factor is 1, that is, in the LTE-based HetNet network, Different network elements are completely coincident in the frequency domain.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the transmit power of the macro base station is much higher than the transmit power of the LPN, and the interference thereof will make the channel interference environment between the LPN and the UE it serves very poor; similarly, the LPN Signal transmission also causes severe interference to subordinate UEs of macro base stations in its vicinity.
  • an enhanced inter-cell interference coordination technology elCIC
  • the technology is not transmitted on certain subframes during macro base station communication. Data, these sub-frames that do not send data are called approximate empty White sub-frames (ABS, Almost Blank Subframe), on these ABS subframes, the interference of the macro base station to the UEs served by the LPN is almost negligible.
  • the UE obtains a corresponding channel quality indicator (CQI, Channel Quality Indicator) by measuring SINR (Signal to Interference plus Noise Ratio); the base station selects a corresponding modulation and coding parameter by receiving the CQI sent by the UE. Therefore, the receiving error rate of the UE is guaranteed to be within a certain range.
  • the UE In the process of the existing measurement and the measurement, the UE generally performs low-pass filtering on the CQI measured in a period of time, and reports the filtered CQI as a measurement result to the base station to improve the accuracy of the measurement.
  • the simplest low-pass filtering is to directly average the previous measurement results with the CQI measured on the current sub-frame, and use the average value as the new measurement result in the current sub-frame.
  • the inventor has found that the following problems exist in the prior art: After the ABS subframe is added to the macro base station, the interference situation of the subordinate UE of the LPN will change with time. If the UE is low-pass filtered according to the original measurement reporting method.
  • the object may be a CQI corresponding to a subframe having different interference conditions, and the LPN scheduling and signal transmission according to the CQI reported in the prior art will affect system performance.
  • how to report the CQI on the resources in different interference environments to the LPN can also make the system performance optimal.
  • the embodiment of the present invention provides a channel state information reporting method and device, which provides effective and accurate CQI reporting in the case where there are subframes with different interference conditions in the communication system.
  • a channel state information reporting method including: receiving a radio resource control signaling sent by a serving node, where the radio resource control signaling includes reporting configuration information, where the reporting configuration information includes reporting Interval Lcqi;
  • the channel quality indication measurement and reporting for the low-interference subframe is performed every Lcqi times, and the channel quality indication measurement and reporting for the normal subframe is performed once.
  • a user equipment including: The signaling receiving unit is configured to receive the radio resource control signaling sent by the serving node, where the radio resource control signaling includes reporting configuration information, where the reporting configuration information includes a reporting interval Lcqi;
  • a scheduling unit configured to perform, according to the indication of the reported configuration information, a channel quality indicator measurement and reporting for a low-interference subframe by the scheduled measurement and reporting unit, and scheduling the measurement and reporting unit to perform a normal subframe.
  • Channel quality indicator measurement and reporting ;
  • the measurement and reporting unit is configured to perform channel quality indication measurement and reporting for low-interference subframes and normal subframes.
  • the embodiment of the present invention has the following advantages:
  • the subframe for measuring the CQI is divided into a low-interference subframe and a normal subframe, and is separately measured and reported, wherein the measurement of the low-interference subframe is reported.
  • the frequency is higher than the measurement and reporting frequency of the normal sub-frame. In the system where multiple interference environments exist simultaneously, the measurement and reporting accuracy of the channel quality indication is improved.
  • a channel state information reporting method including: receiving radio resource control signaling sent by a serving node, where the radio resource control signaling includes measurement resource configuration information;
  • the first channel quality indicator Measuring, by the first set of channel quality indicators, the first channel quality indicator
  • the channel quality indicator measured on the set of low-interference subframes is only reported to the service node.
  • a user equipment including:
  • a signaling receiving unit configured to receive radio resource control signaling sent by the serving node, where the radio resource control signaling includes measurement resource configuration information;
  • a subframe determining unit configured to determine, according to the indication of the measurement resource configuration information, a set of low-interference subframes from multiple reference subframes for measuring a channel quality indicator
  • a measuring unit configured to measure, according to the set of low-interference subframes, a first channel quality indicator;
  • a reporting unit configured to report only the measured channel quality indicator on the set of low-interference subframes to the serving node.
  • the embodiment of the present invention has the following advantages:
  • the subframe of the CQI identifies the low-interference subframe. After the CQI of the low-interference subframe is measured, only the CQI of the measured low-interference subframe is reported, and the CQI hybrid reporting of the different interference type subframes is avoided, and the accuracy of reporting the CQI is improved.
  • a channel state information reporting method including: receiving radio resource control signaling sent by a serving node, where the radio resource control signaling includes reporting configuration information, and the reporting configuration information indication The reported position offset NOFFSET2;
  • the channel quality indicator measurement and reporting for the normal subframe is started once after the NOFFSET2 time is performed after performing the channel quality indication measurement and reporting for the low-interference subframe.
  • a user equipment including:
  • the signaling receiving unit is configured to receive the radio resource control signaling sent by the serving node, where the radio resource control signaling includes reporting configuration information, where the reporting configuration information indicates the reporting location offset NOFFSET2;
  • a processing unit configured to perform, according to the indication of reporting the configuration information, performing channel quality indicator measurement and reporting for the normal subframe after the NOFFSET2 time is performed after performing the channel quality indicator measurement and reporting for the low-interference subframe.
  • the indication of the NOFFSET2 information is offset by the upper position, and the measurement is performed with the lower
  • FIG. 1 is a schematic structural diagram of a heterogeneous network according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a comparison between a macro base station subframe and a user equipment subframe according to an embodiment of the present invention
  • FIG. 3 is a schematic flow chart of a method for reporting channel state information according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a method for performing primary channel state information measurement and reporting according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a correspondence between a subframe in which a base station receives a channel quality indicator and a subframe in which a user equipment transmits a channel quality indicator according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of a high interference subframe and a normal subframe of a user equipment according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of another method for reporting channel state information according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of reporting time of channel state information according to an embodiment of the present invention;
  • FIG. 10 is a schematic diagram of another channel state information according to an embodiment of the present invention;
  • FIG. 11 is another channel state information reporting method according to an embodiment of the present invention;
  • FIG. 12 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;
  • FIG. 13 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic diagram of another method for reporting channel state information according to an embodiment of the present invention
  • FIG. 16 is a schematic structural diagram of another user equipment according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a HetNet network of an LTE system according to an embodiment of the present invention.
  • the network includes small base stations A, B, and C and a macro base station, which may include but not limited to Pico, Femto, and HeNB ( Home eNB, home base station), etc.
  • the macro base station has a large coverage, so that the small base stations A, B, and C are under the coverage of the macro base station A.
  • the user equipment is in the coverage of the small base station A, it is also under the coverage of the macro base station, and thus may be subjected to the macro base station. Interference, especially when the UE is closer to the macro base station, the interference is more serious.
  • FIG. 2 is a schematic diagram of comparison between a macro base station subframe and a user equipment subframe according to an embodiment of the present invention. It can be seen that the subframe of the macro base station includes an ABS subframe and a normal subframe. The macro base station is synchronized with the small base station and the frame of the small base station subordinate UE.
  • the UE's low-interference subframe which is indicated by a white space in FIG.
  • the subframe in which the macro base station transmits and receives data is a normal subframe
  • the common subframe of the UE is located at the same time as the normal subframe of the macro base station, and is also referred to as a high-interference subframe of the UE, which is represented by a black space in FIG.
  • the above examples are only for ease of understanding.
  • the more common situation is caused by other nodes outside the UE serving node, that is, non-UE service nodes.
  • the macro base station described above, or other stations that overlap with the UE serving base station in the frequency domain is not limited in this embodiment.
  • the interference caused by the interference source of the UE may be small at some moments, forming a low-interference subframe.
  • the UE subframe corresponding to the macro broadcast base station (MBSFN, Multicast/Broadcast Single Frequency Network) subframe may also be regarded as a low interference subframe, which is due to the Acer base.
  • the station MBSFN subframe does not interfere with the UEs of the adjacent small base stations.
  • This embodiment is for low-interference subframes
  • the reason for the formation is not limited. As long as the UE is interfered by the non-UE serving node in a certain subframe less than the interference of the non-UE serving node in the normal subframe, the specific subframe can be used as the low interference of the UE. Subframe.
  • FIG. 3 is a schematic flow chart of a method for reporting channel state information according to an embodiment of the present invention, where the process includes:
  • the user equipment receives the radio resource control signaling sent by the serving node, where the radio resource control signaling includes reporting configuration information, where the reporting configuration information includes a reporting interval Lcqi.
  • S32 The user equipment performs channel quality indicator measurement and reporting for low interference subframes every Lcqi times according to the indication of reporting the configuration information, and performs channel quality indicator measurement and uplink only for normal subframes.
  • the scenario in which different network elements and the time-domain eCIC are present in the heterogeneous network can be effectively applied. Even if the surrounding interference environment causes different interference sizes of the UEs at different times, the UE adopts different subframes according to different interference types.
  • the measurement reporting frequency performs CQI measurement and reporting on the low-interference subframe and the normal subframe respectively, so that the CQI measurement and reporting of the low-interference subframe are more frequent, and the channel quality indicator is improved in a system in which multiple interference environments exist simultaneously.
  • the measurement and reporting accuracy, and the reported CQI more accurately reflect the channel condition and improve the reporting accuracy.
  • the number of subframes in a group of low-interference subframes or a group of normal subframes may be one or more.
  • the reporting interval Lcqi can be a non-negative integer, and the Lcqi is used to indicate CQI measurement and reporting of a normal subframe every time the CQI measurement and reporting of the Lcqi low-interference subframes are performed.
  • Lcqi can take 1 , but taking an integer greater than 2 is a more common implementation. When Lcqi is 0, it indicates that CQI measurement and reporting of normal subframes are not performed, and only CQI measurement and reporting for low-interference subframes are performed.
  • the CQI measurement of the low-interference subframe of the UE is taken as an example to describe the flow required for performing a CQI report.
  • the low-interference subframe of the UE corresponds to the ABS sub-port of the macro base station. frame.
  • FIG. 4 shows an implementation performed by an embodiment of the present invention.
  • a schematic diagram of a channel state information measurement and reporting method assuming that the current serving node of the UE is a small base station, and the interference source may be a macro base station, the method includes:
  • the small base station determines, according to the ABS subframe type pattern of the macro base station, the measurement reporting configuration information for each UE.
  • the measurement reporting configuration information may include two parts: measurement resource configuration information and upper configuration information.
  • the measurement resource configuration information may be a binary bitmap through which the subframe is divided into two types of subframes, that is, a low interference subframe and a high interference subframe (normal subframe).
  • the measurement resource configuration information may also be a result of encoding the binary bitmap, which is not limited in this embodiment.
  • the reporting configuration information may be used to indicate a reporting mode.
  • the small base station reports the measurement information to the UE by using RRC signaling.
  • the UE acquires the measurement resource configuration information, and identifies a low-interference subframe and a normal subframe in the multiple reference subframes. Specifically, the UE may determine whether the value of the indicator bit corresponding to one reference subframe in the measurement resource configuration information is 1, and when the value of the indicator bit is 1, determine that the reference subframe is a low-interference subframe. When the value of the indication bit is 0, it is determined that the reference subframe is a normal subframe.
  • the UE may extract the measurement report configuration information, and decode the measurement resource configuration information REScqi_ref, where the indicator bit corresponding to the multiple subframes may be included in the REScqi-ref, respectively n - N - ncqi - ref to n - ncqi - Whether the indication bit value corresponding to N + 1 subframes between ref is "1", where N is a positive integer, and all subframes whose judgment result is "1" are low.
  • the interference subframe group; the subframe whose judgment result is "0" constitutes a normal subframe group.
  • a reference subframe when the value of the indicator bit is 0, a reference subframe is indicated as a low-interference subframe; when the value of the indicator bit is 1, it indicates that the reference subframe is a normal subframe.
  • the UE may also determine a low-interference subframe from only a plurality of subframes, and the remaining subframes are naturally normal subframes, and vice versa.
  • the UE may measure the first CQI on a set of low-interference subframes according to the measurement reporting mode indicated by the reporting configuration information.
  • the CQI of each low-interference subframe in the low-interference subframe can be measured, and the measured CQIs are low-pass filtered, and the result of the low-pass filtering is used as the first letter.
  • Road quality indication The low-pass filtering process is equivalent to averaging CQI measurement results of a plurality of low-interference sub-frames, and the obtained first channel quality indication accuracy is improved.
  • S45 The UE reports the first CQI to the small base station.
  • the foregoing embodiment describes an implementation process of measuring and reporting a CQI of a low-interference subframe.
  • the low-interference subframe needs to be replaced with a normal subframe, and the foregoing implementation process is still used. .
  • the CQI of the subframe in an interference situation is reported in one report, and the subframe hybrid measurement and the CQI caused by the different interference conditions can be reduced. accurate.
  • the obtained CQI is referred to as a first CQI; if it is performed for a normal subframe in one measurement and reporting, the CQI is referred to as the second CQI, and such a custom name is of course not intended to limit the invention.
  • the receiving of the UE's serving node (such as the LPN, etc.) in the nth subframe corresponds to the CQI of the measurement reference resource.
  • the CQI currently received by the serving node is ncqi_ref
  • the CQI before the sub-frame, ncqi_ref is a preset positive integer.
  • the serving node may receive the CQI sent by the UE in the nth subframe, and may determine the measurement reference subframe n-ncqi_ref corresponding to the nth subframe, considering the influence of the reporting delay.
  • the CQI received on the nth subframe is taken as the CQI of the measurement reference subframe n - ncqi - ref.
  • CQI filtering of a plurality of low-interference subframes may be performed.
  • multiple subframes of the same type of subframe may be low-pass filtered to obtain a result for reporting, thereby improving the accuracy of reporting CQI.
  • the following description is made with reference to the accompanying drawings.
  • the user equipment has multiple subframes for measuring CQI reference subframes, including subframes n-8, n-7n-4, including low interference.
  • Subframes and high-interference sub-frames are represented by white and black spaces, respectively.
  • the CQI of the plurality of low-interference subframes or the CQIs of the plurality of high-interference subframes may be filtered in a low-pass filtering window, that is, the CQI average of the plurality of low-interference subframes or the plurality of high-interference subframes is obtained. Value, and the filtering result can be reported to the service node, and the service node of the UE can Receiving the reported filtered CQI on the subframe at a certain time (shown in the nth subframe), and determining the measurement reference subframe corresponding to the current reception time, thereby determining which of the received CQIs are based on CQI obtained from low-interference subframes or normal subframes.
  • the serving node can determine the CQI of the low-interference subframe in the reference subframe according to this; In this report, C3 ⁇ 4/_H/ is reported, and the serving node can determine the CQI of the high-interference subframe in the reference subframe accordingly.
  • the foregoing embodiment in the process of measuring and reporting the CQI, whether the measurement reporting process is for a normal subframe or a low-interference subframe, the foregoing embodiment can be implemented, and multiple subframes of the same interference type are used.
  • the CQI filtering helps improve measurement and reporting accuracy.
  • FIG. 7 is a schematic diagram of another method for reporting channel state information according to an embodiment of the present disclosure, where the method includes:
  • the UE receives the RRC signaling sent by the serving node, where the RRC signaling includes the reporting configuration information, where the reporting configuration information includes the reporting interval Lcqi.
  • the UE performs Lcqi times channel quality indicator measurement and reporting for the low-interference subframe in the Lcqi period according to the reporting interval Lcqi, and starts performing the normal sub-time at the next reporting time after the Lcqi cycles.
  • the channel quality indicator of the frame is measured and reported, that is, the second CQI reporting period for the low-interference subframe in the process is Lcqi times of the first CQI reporting period of the normal subframe.
  • a CQI report can be completed in one reporting period, and is used to report the CQI of a frequency band in this report.
  • a frequency band can be divided into a plurality of bandwidth parts (BP, Bandwidth Part), so the CQI of the frequency band can include the wideband CQI of the frequency band itself and the sub-band CQI of its multiple bandwidth parts, and each sub-band CQI may be in a period Repeatedly reported multiple times.
  • Figure 8 is Lcqi For example, 2, Np is 5ms, and K is equal to 1.
  • ⁇ is the reporting time interval, and ⁇ is the number of repetitions reported by the sub-band.
  • the system bandwidth to be measured is divided into three bandwidth parts, and the first CQI includes one wideband CQI (W-CQI, Wideband-CQI) and three correspondings in the frequency domain range.
  • the sub-band CQI (S-CQI, Subband-CQI) in the different bandwidths is required to report four CQIs in one reporting period of the first CQI. Therefore, the reporting period of the first CQI includes four reporting times. In the time domain, the interval between reporting times is the same. In this example, the reporting time Np is 5 ms, and in the 8 reporting times between 0 and 35 ms, the second CQI is reported twice or 2 times in 2 cycles.
  • CQI 1 For the first CQI, W-CQI1, S-CQI 1 , S-CQI 1 , S-CQI 1 , S-CQI 1, W-CQI 1, S-CQI1, S-CQI 1 and S- are reported in sequence for a total of 2 cycles.
  • CQI 1 where W-CQI 1 is the wideband CQI in the first CQI, and S-CQI 1 is the subband CQI in the first CQI.
  • the sub-band CQI in one cycle can be repeatedly measured and reported K times. Since the number of repetitions K reported by the sub-band measurement in this example is 1, each sub-band CQI is only measured in one reporting period. Report it once.
  • the CQI is reported before and the sub-band CQI is reported, but in practice, this order can be freely adjusted.
  • the second CQI may be reported at the next reporting time that is subsequently arrived. That is to say, in this example, only one period of the high-interference subframe CQI is reported after reporting the low-interference subframe CQI of 2 periods.
  • the second CQI may include a wideband CQI and a subband CQI, and may only include a wideband CQI.
  • the reported content may be different, and the reporting period of the first CQI reporting period and the second CQI may also be different.
  • the second CQI includes only the wideband CQI (W-CQI2), so the >3 ⁇ 4 period on the second CQI includes only one reporting time, but this example is not used to limit the present invention, and the second CQI can also be Configure to report more subband CQIs.
  • the reporting may be performed according to the trigger of the small base station. Specifically, the UE may receive the touch in the Lcqi + 1 after receiving the small base station trigger and the first CQI in consecutive Lcqi times. The second CQI is reported at the time of issue. That is to say, each time the low-interference subframe CQI is triggered to report Lcqi times, only the high-interference subframe CQI is triggered to be reported once. After each trigger, the UE may report the broadband CQI and the sub-band CQI that need to be reported to the small base station at a number of subsequent reporting times.
  • the CQI may include a wideband CQI and a number of subband CQIs
  • the number of CQIs reported when each triggering the first CQI is different from the number of CQIs reported when each triggering the second CQI is triggered, that is, for the first CQI and the second CQI, the one that is reported after being triggered is triggered.
  • the duration can be different.
  • the sub-band CQI needs to be repeatedly reported, the sub-band CQI may be reported multiple times in the reporting period after a triggering, which is not limited in this embodiment.
  • the performance of the low-interference sub-frames on the performance of the entire system is greater than the impact of the high-interference on the system
  • increasing the reporting frequency of the low-interference CQI is beneficial to improving the CQI reporting efficiency, and the reporting process is based on the period.
  • the CQI report is completed once per cycle, and the CQI report content may be one or more.
  • Each of the report modes may be configured by a person skilled in the art, and may be notified by the service node to the user equipment.
  • a CQI such as a wideband CQI with only one frequency band
  • the current reporting is occupied. Reporting moments.
  • the triggering report can be similar to the periodic report.
  • Each report can report multiple CQIs, and each CQI report can occupy one reporting time.
  • FIG. 9 is a schematic diagram of another method for channel state information according to an embodiment of the present invention, where the method includes:
  • the UE receives the RRC signaling sent by the serving node, where the RRC signaling includes the reporting configuration information, where the reporting configuration information includes a reporting interval Lcqi and a reporting location offset NOFFSET2.
  • S92 The UE performs Lcqi times of channel quality indication measurement and reporting for the low-interference subframe in the Lcqi period according to the reporting interval Lcqi, and starts performing the normal subframe for the LOFF period after the Lcqi period.
  • Channel quality indicator measurement and reporting Taking Lcqi as 2, Np as 5ms, K as 1, and NOFFSET2 as 3 as an example, it is assumed that the system bandwidth is still divided into three bandwidth parts (BP Bandwidth Part), and the CQI of the system bandwidth is 1 in the frequency domain range.
  • a wideband CQI and three sub-band CQIs corresponding to different bandwidth portions, 20ms is a first CQI reporting period, and four CQIs are reported in each first CQI reporting period.
  • the second CQI may be reported at the second NOFFSET offset time.
  • the NOFFSET2 is a non-negative integer. When NOFFSET2 is 0, it indicates that the second CQI is not reported. Referring to FIG. 10 as an example, NOFFSET2 is 3, and the first CQI of 2 cycles is reported on the 35th, the wideband CQI (W-CQI2) of the second CQI can be reported at 38ms, and the first CQI is continuously reported in the next cycle. . That is to say, whenever the first CQI of 2 cycle periods is reported, the second CQI report is inserted once.
  • the reporting of the second CQI is not limited by the reporting time
  • the reporting may be reported at an offset time after the completion of the >3 ⁇ 4 cycle on the first CQI according to the indication of NOFFSET2, the reporting is more flexible, and the low-interference subframe is added. Reporting helps improve accuracy.
  • the method of inserting and reporting may also be used.
  • the UE may report the CQI by receiving a trigger of the serving node.
  • the second channel quality indicator may be reported to be sent on the Nth second subframe after the Lcqi received the trigger.
  • the second CQI report does not have to receive a separate trigger, but is performed at a certain offset time after the first CQI trigger reaches a certain number of times. Since the frequency at which the first CQI is triggered is Lcqi times of the second CQI, it is advantageous to improve the reporting accuracy, and reporting according to the offset saves an additional triggering process.
  • the foregoing embodiment can prevent the resources corresponding to the reported CQI from having different interference environments, thereby improving the reporting accuracy of the CQI.
  • the performance of the low-interference sub-frames is much greater than the impact of the high-interference on the system. Therefore, under the premise of ensuring a certain reporting load, the CQI for reporting low-interference subframes is generally reported.
  • the ratio in the middle can improve the efficiency of measuring and reporting CQI, and effectively improve system performance.
  • FIG. 11 is a schematic diagram of another method for reporting channel state information according to an embodiment of the present invention, where Methods include:
  • Sill receiving radio resource control signaling sent by the serving node, where the radio resource control signaling includes measurement resource configuration information;
  • S112 Determine, according to the indication of the measurement resource configuration information, a set of low-interference subframes from multiple reference subframes used for measuring channel quality indications;
  • S114 Report the channel quality indicator measured on the set of low-interference subframes to the service node.
  • the UE may divide the subframe used for measuring the CQI into a low-interference subframe and a high-interference normal subframe, and report only the CQI of the measured low-interference subframe to the serving node (such as LPN, etc.).
  • the serving node such as LPN, etc.
  • the low-interference subframe of the UE may be a subframe corresponding to an approximate blank subframe or a multicast broadcast single-frequency network subframe of a node that interferes with the UE, and of course, the low-interference subframe is implemented.
  • the example is also not limited. As long as the UE is affected by the interfering node in a certain subframe is less affected by the interfering node than in the normal sub-frame, the subframe can be regarded as a low-interference subframe of the UE.
  • the UE may obtain a channel quality indicator of each of the low-interference subframes in the set of low-interference subframes, and perform low-pass filtering on the measured channel quality indicators of the plurality of low-interference subframes.
  • a channel quality indicator Since the measurement CQI of all subframes used for measurement is filtered by the prior art, the obtained result is inaccurate.
  • the measurement result improves the accuracy of the report.
  • the user equipment includes:
  • the signaling receiving unit 121 is configured to receive the radio resource control signaling sent by the serving node, where the radio resource control signaling includes reporting configuration information, where the reporting configuration information includes a reporting interval Lcqi;
  • the scheduling unit 122 is configured to perform, according to the indication of reporting the configuration information, each scheduled measurement and report
  • the element 123 performs Lcqi times on the channel quality indicator measurement and reporting for the low-interference subframe, and only the measurement and reporting unit 123 performs the channel quality indicator measurement and reporting for the normal subframe.
  • the measurement and reporting unit 123 uses Channel quality indication measurement and reporting for low interference subframes and normal subframes are performed.
  • the scheduling unit 122 is specifically configured to schedule the measurement and reporting unit 123 to perform Lcqi times low for each time in Lcqi cycles. After the channel quality indicator measurement and reporting of the interference subframe, the measurement and reporting unit 123 is scheduled to perform the channel quality indicator measurement and reporting for the normal subframe at the next reporting time after the Lcqi cycles.
  • the scheduling unit 122 can be a processor.
  • the order receiving unit 121 and the measuring and reporting unit 123 may be different interfaces, respectively.
  • the scheduling unit 122 is specifically configured to receive the trigger for each consecutive Lcqi and schedule the measurement and reporting unit 123 to perform the targeting. After the channel quality indicator measurement and reporting of the low-interference subframe, the measurement and reporting unit 123 performs a channel quality indicator measurement and reporting for the normal subframe according to the trigger received by the Lcqi + 1 time.
  • the reporting configuration information further indicates that the reporting location offset NOFFSET2, and if the reporting configuration information further indicates that the periodic reporting mode is adopted, the scheduling unit 122 is specifically configured to be used in Lcqi After the measurement and reporting unit 123 performs the channel quality indicator measurement and reporting for the low-interference subframe in the period, the channel quality indicator measurement and reporting of the measurement and the reporting frame are scheduled.
  • the reporting configuration information further indicates that the reporting location offset NOFFSET2, and if the reporting configuration information further indicates that the aperiodic reporting mode is adopted, the scheduling unit 122 is specifically configured to be used continuously. After the Lcqi receives the trigger and schedules the measurement and reporting unit 123 to perform the channel quality indication measurement and reporting for the low-interference subframe, scheduling the measurement and the upper The reporting unit 123 starts performing channel quality indicator measurement and reporting for the normal subframe at the time of NOFFSET2 after receiving the trigger for the Lcqi time.
  • the measurement and reporting unit 123 further includes: an identification module 131. Determining, according to the indication of the measurement resource configuration information, a set of low-interference subframes or a group of normal subframes from a plurality of reference subframes for measuring a channel quality indicator; and a measurement and reporting module 132, configured to A channel quality indicator is measured on a set of low-interference subframes or a group of normal subframes, and the channel quality indicator is reported to the serving node.
  • the identification module 131 and the measurement and reporting module 132 can be processor units in the processor, respectively.
  • the user equipment in this embodiment may report different interference type subframes by using different reporting frequencies.
  • FIG. 14 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure, where the user equipment includes:
  • the signaling receiving unit 141 is configured to receive radio resource control signaling sent by the serving node, where the radio resource control signaling includes measurement resource configuration information.
  • a subframe determining unit 142 configured to determine, according to the indication of the measurement resource configuration information, a set of low-interference subframes from multiple reference subframes for measuring a channel quality indicator;
  • a measuring unit 143 configured to measure, by using the first channel quality indicator, the set of low interference subframes
  • the reporting unit 144 is configured to report only the measured channel quality indicator on the set of low-interference subframes to the serving node.
  • the measuring unit 143 includes: a processing unit 1431, configured to obtain, by using the channel quality indicator of each low-interference subframe in the set of low-interference subframes, the plurality of low-interference subframes that are obtained by the measurement
  • the channel quality indication is low pass filtered to obtain a first channel quality indication.
  • Measurement sheet Element 143 can be a processor and processing unit 1431 is a unit in the processor.
  • the subframe determining unit 142 may also be a processor; the signaling receiving unit 141 and the reporting unit 144 may be interfaces, respectively.
  • the user equipment in this embodiment avoids the CQI hybrid reporting of different interference type subframes. After measuring the low interference subframe CQI, only the CQI of the measured low interference subframe is reported, and the accuracy of reporting the CQI is improved.
  • FIG. 15 is a schematic diagram of another method for reporting channel state information according to an embodiment of the present disclosure, where the method includes:
  • Radio resource control signaling sent by the service node where the radio resource control signaling includes reporting configuration information, where the reporting configuration information indicates reporting location offset NOFFSET2;
  • S152 Perform, according to the indication of reporting the configuration information, performing channel quality indicator measurement and reporting for the normal subframe after the NOFFSET2 time is performed after performing the channel quality indicator measurement and reporting for the low-interference subframe.
  • the measurement and the upper low-level do not need to occupy additional reporting time and the reporting manner is more flexible.
  • the CQI insertion and reporting of the normal subframe may be performed once for the CQI measurement reporting for the low-interference subframe CQI.
  • the measurement reporting manner may prevent the resources corresponding to the reported CQI from having different interferences. Environment, thereby improving the accuracy of CQI reporting.
  • FIG. 16 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure, where the user equipment includes:
  • the signaling receiving unit 161 is configured to receive the radio resource control signaling sent by the serving node, where the radio resource control signaling includes reporting configuration information, where the reporting configuration information indicates the reporting location offset NOFFSET2;
  • the processing unit 162 is configured to perform, according to the indication of reporting the configuration information, performing channel quality indicator measurement and reporting for a normal subframe after the NOFFSET2 time is performed after performing the channel quality indicator measurement and reporting for the low-interference subframe.
  • the processing unit 162 is configured to perform channel quality indicator measurement and reporting for the low-interference subframe once in one cycle, after the period After the NOFFSET2 time, the channel quality indicator measurement and reporting for the normal subframe is started. If the reporting configuration information further indicates that the aperiodic reporting mode is adopted, the processing unit 162 is configured to receive a trigger and execute the low After the channel quality indicator measurement and reporting of the interference subframe, the channel quality indicator measurement and reporting for the normal subframe is started to be performed at the time of NOFFSET2 after the trigger is received.
  • the signaling receiving unit 161 can be an interface. Processing unit 162 may be implemented in hardware, and may specifically be a processor.
  • the user equipment involved in the embodiments of the present invention may include, but is not limited to, various types of terminal equipments such as a mobile phone, a notebook computer, and a tablet computer.
  • the service node of the terminal involved may be a low-power service node such as a small home base station serving the terminal. device.
  • the embodiment of the present invention further provides a communication system, including a small base station and a terminal, where the terminal can perform CQI measurement by using the method as described in the previous embodiment, and report the measured CQI to a small base station serving the same.
  • the method separately reports the different interference status sub-frames, and reports the low-interference sub-frames more frequently, thereby improving the feedback channel status.
  • the accuracy of the information is conducive to the normal operation of communication.
  • the instructions may be stored in a computer readable storage medium by a computer program, and the program may, when executed, include a flow of an embodiment of the methods described above.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a random storage device! ⁇ Random Access Memory (RAM), etc.

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Description

一种信道状态信息上报方法和设备 本申请要求于 2010 年 11 月 8 日提交中国专利局、 申请号为 201010535383.4、 发明名称为"一种信道状态信息上报方法和设备 "的中国专利 申请的优先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域， 尤其涉及一种信道状态信息上报方法和设备。
背景技术
异构网络（ HetNet, Heterogeneous Networks )通过在宏基占（ Macro Evolved Node B , 简称 MeNB )覆盖范围内布放低功率节点（ LPN , Low Power Node ) , 能够缩短收发节点与用户设备之间的空间距离，有效降低路径损耗， 并提高系 统吞吐量和网络整体效率。所述低功率节点包括但不限于家庭基站等小型无线 通信节点。 在 HetNet网络中可以存在不同发射功率的网络单元， 并且 LPN的 覆盖范围在相应宏基站内。 基于 LTE (长期演进， Long Term Evolution ) 系统 的 HetNet 网络采用 OFDM (正交频分复用， Orthogonal Frequency Division Multiplexing )调制， 频率复用因子为 1 , 也就是说， 在基于 LTE的 HetNet网 络中， 不同网络单元在频域上是完全重合的， 这时宏基站发射的信号会对其覆 盖范围内的 LPN所服务的 UE ( User Equipment, 用户设备）， 并产生剧烈的干 扰。 特别地， 当 LPN处于宏基站附近时， 宏基站的发射功率远高于 LPN的发 射功率， 其干扰将会使 LPN与其服务的 UE之间的信道干扰环境变得很恶劣； 同理， LPN的信号发射对于其附近宏基站的下属 UE也产生剧烈的干扰。 为了 解决干扰问题， 现有技术中引入了基于时域的增强的小区间干扰协调技术 ( elCIC, Enhancement Inter Cell Interference Coordination ),该技术是在宏基站 通信过程中，在某些子帧上不发送数据， 这些不发送数据的子帧被称为近似空 白子帧 ( ABS, Almost Blank Subframe ), 在这些 ABS子帧上， 宏基站对 LPN 服务的 UE的干扰几乎可以忽略。
在 LTE系统中， UE通过测量 SINR( Signal to Interference plus Noise Ratio, 信干噪比）得到对应的信道质量指示（CQI, Channel Quality Indicator ); 基站 通过接收 UE发送的 CQI来选择相应的调制编码参数，从而保证 UE的接收误 码率在一定范围内。 在现有测量和上^艮 (31的过程中， UE通常会对一段时间 内测量得到的 CQI进行低通滤波， 并将滤波后的 CQI作为测量结果上报给基 站， 以提高测量的准确度。 最简单的低通滤波就是直接将之前若干个测量结果 与当前子帧上测量得到的 CQI做平均， 将平均值作为当前子帧上新的测量结 果。
发明人发现现有技术至少存在以下问题： 当宏基站中加入 ABS子帧后， LPN下属 UE的干扰情况将随着时间不同而发生改变， 如果按照原有的测量上 报方法， UE低通滤波后的对象会是包括各种干扰情况不同的子帧对应的 CQI, LPN若是按照现有技术中上报的 CQI进行调度和信号发射将影响系统性能。 另 外在相同上报负荷的前提下， 如何将不同干扰环境下的资源上的 CQI上报给 LPN, 才能使系统性能最优也是需要考虑的问题。
发明内容
本发明实施例提供一种信道状态信息上报方法和设备，在通信系统中存在 干扰状况不同的子帧的情况下提供有效而准确的 CQI上报。
根据本发明的一实施例， 提供一种信道状态信息上报方法， 包括： 接收服务节点发送的无线资源控制信令，所述无线资源控制信令中包括上 报配置信息， 所述上报配置信息包括上报间隔 Lcqi;
根据所述上报配置信息的指示， 每执行 Lcqi次针对低干扰子帧的信道质 量指示测量与上报， 执行一次针对普通子帧的信道质量指示测量与上报。
根据本发明的另一实施例， 提供一种用户设备， 包括： 信令接收单元， 用于接收服务节点发送的无线资源控制信令， 所述无线资 源控制信令中包括上报配置信息， 所述上报配置信息包括上报间隔 Lcqi;
调度单元， 用于根据所述上报配置信息的指示，每调度测量与上报单元执 行 Lcqi次针对低干扰子帧的信道质量指示测量与上报， 调度所述测量与上报 单元执行一次针对普通子帧的信道质量指示测量与上报；
所述测量与上报单元，用于执行针对低干扰子帧和普通子帧的信道质量指 示测量与上报。
根据对上述技术方案的描述， 本发明实施例有如下优点： 通过将用于测量 CQI的子帧分为低干扰子帧与普通子帧并分别进行测量和上报，其中低干扰子 帧的测量上报频率高于普通子帧的测量和上报频率，在多种干扰环境同时存在 的系统中， 提高信道质量指示的测量和上报精度。
根据本发明的另一实施例， 提供一种信道状态信息上报方法， 包括： 接收服务节点发送的无线资源控制信令，所述无线资源控制信令中包括测 量资源配置信息；
根据所述测量资源配置信息的指示，从用于测量信道质量指示的多个参考 子帧中确定出一组低干扰子帧；
在所述一组低干扰子帧上测量得到第一信道质量指示；
仅将在所述一组低干扰子帧上测量得到信道质量指示上报至所述服务节 点。
根据本发明的另一实施例， 提供一种用户设备， 包括：
信令接收单元， 用于接收服务节点发送的无线资源控制信令， 所述无线资 源控制信令中包括测量资源配置信息；
子帧确定单元， 用于根据所述测量资源配置信息的指示，从用于测量信道 质量指示的多个参考子帧中确定出一组低干扰子帧；
测量单元， 用于在所述一组低干扰子帧上测量得到第一信道质量指示； 上报单元，用于仅将在所述一组低干扰子帧上测量得到信道质量指示上报 至所述服务节点。
根据对上述技术方案的描述， 本发明实施例有如下优点： 通过从用于测量
CQI的子帧识别出低干扰子帧， 在测量得到低干扰子帧 CQI后， 仅上报测量 得到的低干扰子帧的 CQI, 避免不同干扰类型子帧的 CQI混合上报， 提高上 报 CQI的精度。
根据本发明的另一实施例， 提供一种信道状态信息上报方法， 包括： 接收服务节点发送的无线资源控制信令，所述无线资源控制信令中包括上 报配置信息， 所述上报配置信息指示了上报位置偏移 NOFFSET2;
根据所述上报配置信息的指示，在执行一次针对低干扰子帧的信道质量指 示测量与上报后经过 NOFFSET2时刻开始执行一次针对普通子帧的信道质量 指示测量与上报。
根据本发明的另一实施例， 提供一种用户设备， 包括：
信令接收单元， 用于接收服务节点发送的无线资源控制信令， 所述无线资 源控制信令中包括上报配置信息， 所述上报配置信息指示了上报位置偏移 NOFFSET2;
处理单元， 用于根据所述上报配置信息的指示， 在执行一次针对低干扰子 帧的信道质量指示测量与上报后经过 NOFFSET2时刻开始执行一次针对普通 子帧的信道质量指示测量与上报。
本实施例通过上 ^艮位置偏移 NOFFSET2信息的指示， 在测量与上 低干
不需要占用额外的上报时刻且上报方式更加灵活。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施 例或现有技术描述中所需要使用的附图作简单地介绍，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他的附图。
图 1为本发明的实施例提供的一种异构网络的结构示意图；
图 2 为本发明实施例提供的一种包括宏基站子帧和用户设备子帧的对比 示意图；
图 3 为本发明实施例提供了一种信道状态信息上报方法的简化流程示意 图；
图 4 为本发明实施例提供的一种执行一次信道状态信息测量与上报方法 的示意图；
图 5 为本发明实施例提供的一种基站接收信道质量指示的子帧与用户设 备发送信道质量指示的子帧间对应关系的示意图；
图 6 为本发明实施例提供的一种用户设备的高干扰子帧和普通子帧的示 意图；
图 7为本发明实施例提供的另一种信道状态信息上报方法的示意图； 图 8为本发明实施例提供的一种信道状态信息的上报时刻的示意图； 图 9为本发明实施例提供的另一种信道状态信息上报方法的示意图； 图 10为本发明实施例提供的另一种信道状态信息的上>¾时刻的示意图； 图 11为本发明实施例提供的另一种信道状态信息上报方法的示意图； 图 12为本发明实施例提供的一种用户设备的结构示意图；
图 13为本发明实施例提供的另一种用户设备的结构示意图；
图 14为本发明实施例提供的另一种用户设备的结构示意图；
图 15为本发明实施例提供的另一种信道状态信息上报方法的示意图； 图 16为本发明实施例提供的另一种用户设备的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清 楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是 全部的实施例。基于本发明中的实施例， 本领域普通技术人员在没有作出创造 性劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。
图 1为本发明的实施例提供的一种 LTE系统的 HetNet网络的结构示意图， 网络中包括小型基站 A、 B和 C以及宏基站， 所述小型基站可包括但不限于 Pico, Femto和 HeNB ( Home eNB, 家庭基站）等。 宏基站覆盖范围较大， 使 得小型基站 A、 B和 C处在宏基站 A的覆盖之下， 当用户设备处于小型基站 A覆盖范围内时， 同样在宏基站覆盖之下， 因此可能受到宏基站干扰， 特别是 当 UE距离宏基站较近时， 干扰更加严重。 由于宏基站在 ABS子帧上不传输 数据而仅在普通子帧上进行传输， 因此宏基站在 ABS子帧上对小型基站下属 UE的干扰较小。 对于 UE来说， 与宏基站的 ABS子帧位于相同时刻的子帧为 低干扰子帧。 为便于理解， 图 2给出了本发明实施例提供的一种包括宏基站子 帧和用户设备子帧的对比示意图。 可以看到， 宏基站的子帧包括 ABS子帧和 普通子帧。 宏基站与小型基站以及小型基站下属 UE的帧是同步的。 与宏基站 的 ABS子帧位于相同时刻的是 UE的低干扰子帧， 在图 2中用白色空格表示。 而宏基站收发数据的子帧为普通子帧， 与宏基站普通子帧位于相同时刻的是 UE的普通子帧， 也称为 UE的高干扰子帧， 在图 2中用黑色空格表示。
当然， 以上举例仅为了便于理解， 对于 UE来说， 造成其不同子帧的干扰 状况不同可能有多种原因，但比较常见的情况是由 UE服务节点外的其它节点， 即非 UE服务节点造成的， 例如之前所述的宏基站， 或者来自其它与 UE服务 基站在频域上重合的站点， 本实施例对此不做限制。 但是某些时刻 UE的干扰 源造成的干扰可能较小， 形成低干扰子帧。 除了宏基站的 ABS子帧外， 与宏 基站的组播广播单频网 （ MBSFN , Multicast/Broadcast Single Frequency Network ) 子帧相对应的 UE 子帧也可认为是低干扰子帧， 这是由于宏基站 MBSFN子帧不对相邻小型基站下属 UE形成干扰。 本实施例对低干扰子帧的 形成原因不做限定， 只要该 UE在某一特定子帧上受到非 UE服务节点的干扰 小于在普通子帧上受到该非 UE服务节点的干扰， 则该特定子帧即可作为 UE 的低干扰子帧。
图 3 为本发明实施例提供了一种信道状态信息上报方法的简化流程示意 图， 该流程包括：
S31 : 用户设备接收服务节点发送的无线资源控制信令， 所述无线资源控 制信令中包括上报配置信息， 所述上报配置信息包括上报间隔 Lcqi。
S32: 所述用户设备根据所述上报配置信息的指示， 每执行 Lcqi次针对低 干扰子帧的信道质量指示测量与上报，仅执行一次针对普通子帧的信道质量指 示测量与上 ·艮。
在本实施例可有效针对异构网络下存在不同网络单元和引入时域 elCIC 的场景， 即便周围干扰环境使得不同时刻 UE 可能存在的干扰大小不同， 但 UE根据不同干扰类型的子帧， 采用不同的测量上报频率对干扰程度低的子帧 和普通子帧分别进行 CQI测量和上报， 使得低干扰子帧的 CQI测量和上报更 频繁，在多种干扰环境同时存在的系统中，提高信道质量指示的测量和上报精 度， 且使得上报的 CQI更准确反映信道状况， 提高上报精度。 在上述实施例 中， 一组低干扰子帧或一组普通子帧中的子帧数量可以为一个或多个。可以理 解，所述上报间隔 Lcqi可以是一个非负的整数，所述 Lcqi用于指示每经过 Lcqi 次低干扰子帧的 CQI测量与上报，执行一次普通子帧的 CQI测量与上报。 Lcqi 可以取 1 , 但取大于 2的整数是一种更常见的实现方式。 当 Lcqi为 0, 则表明 不进行普通子帧的 CQI测量与上报， 仅执行针对低干扰子帧的 CQI测量与上 报。
为便于描述上述过程 S32, 下面以对 UE的低干扰子帧的 CQI测量为例， 介绍进行一次 CQI上报所需要的流程， 在本实例中， UE的低干扰子帧对应于 宏基站的 ABS子帧。 具体地， 图 4给出了本发明实施例提供的一种执行一次 信道状态信息测量与上报方法的示意图，假定 UE当前服务节点为一个小型基 站， 干扰源可能是宏基站， 则该方法包括：
S41 : 小型基站根据宏基站的 ABS子帧类型 pattern, 针对每个 UE确定其 测量上报配置信息。 所述测量上报配置信息可包括两部分： 测量资源配置信息 和上 配置信息。 测量资源配置信息可以是二进制的比特图，通过这个比特图 把子帧分成两个类型的子帧， 即低干扰子帧和高干扰子帧 （普通子帧）。 可选 地， 这里测量资源配置信息也可以是二进制比特图经过编码后的结果， 本实施 例对此不做限定。 所述上报配置信息可用于指示上报模式。
S42: 小型基站通过 RRC信令将所述测量上报配置信息至 UE。
S43: UE 获取所述测量资源配置信息， 识别出多个参考子帧中的低干扰 子帧和普通子帧。 具体地， UE可判断在所述测量资源配置信息中与一个参考 子帧对应的指示位的值是否为 1 , 当所述指示位的值为 1时， 确定该参考子帧 为低干扰子帧； 当所述指示位的值为 0时， 确定该参考子帧为普通子帧。 UE 可在接收所述 RRC信令后， 从中提取测量上报配置信息， 并解码得到其中的 测量资源配置信息 REScqi— ref ,在 REScqi— ref中可包括与多个子帧对应的指示 位， 分别判断从 n - N - ncqi— ref到 n - ncqi— ref之间的 N+ 1个子帧所对应的指 示位值是否为 "1" , 这里 N是正整数， 将所有判断结果为 "1" 的子帧组成低 干扰子帧组； 判断结果为 "0" 的子帧组成普通子帧组。
可以理解，本实施例也可在所述指示位的值为 0时指示一个参考子帧为低 干扰子帧； 在指示位的值为 1时指示该参考子帧为普通子帧。 当然， UE也可 仅从多个子帧中确定出低干扰子帧，剩下的子帧自然就是普通子帧，反之亦然。
S44: UE 可根据所述上报配置信息指示的测量上报模式在一组低干扰子 帧上测量得到第一 CQI。
为了提高 CQI测量准确度， 可通过测量低干扰子帧中每个低干扰子帧的 CQI, 并对测量得到的多个 CQI进行低通滤波， 将低通滤波的结果作为第一信 道质量指示。 所述低通滤波过程相当于是对多个低干扰子帧的 CQI测量结果 求平均值， 得到的第一信道质量指示精度有所提高。
S45: UE上报所述第一 CQI至所述小型基站。
上述实施例介绍了一种测量并上报低干扰子帧的 CQI的实现过程， 当需 要求出针对普通子帧的 CQI时， 只需要将低干扰子帧替换为普通子帧， 上述 实现过程依然使用。本实施例通过区分普通子帧和低干扰子帧，在一次上报中 至上报一种干扰情况下的子帧的 CQI,可减少针对多类不同干扰情况的子帧混 合测量及上报 CQI造成的不准确。 在本发明实施例中， 为便于介绍， 如果在 一次测量和上报中针对低干扰子帧进行， 则得到的 CQI称为第一 CQI; 如果 在一次测量和上报中针对普通子帧进行， 则得到的 CQI称为第二 CQI, 这种 自定义名称当然不用于限定本发明。
在 LTE系统中， 由于 CQI的上报存在延时， UE的服务节点（如 LPN等） 在第 n个子帧上的接收对应测量参考资源的 CQI, 具体地，服务节点当前接收 的 CQI是 ncqi— ref个子帧之前的 CQI, ncqi— ref是预设的一个正整数。具体如 图 5所示， 服务节点可能在第 n子帧接收到 UE发来的 CQI, 考虑上报时延的 影响，可确定第 n子帧所对应的测量参考子帧 n - ncqi— ref,并将在第 n子帧上 接收到的 CQI作为测量参考子帧 n - ncqi— ref的 CQI。
在过程 S44中， 为提高测量精度， 可对多个低干扰子帧的 CQI滤波。 但 在实际应用中，在对任何一类子帧进行测量时， 也可将多个同一类子帧子帧进 行低通滤波得到结果来上报， 提高上报 CQI精度。 为便于理解， 下面结合附 图进行说明， 如图 6所示， 用户设备存在多个子帧用于测量 CQI的参考子帧， 包括子帧 n - 8、 n - 7 n - 4, 其中包括低干扰子帧和高干扰子帧， 分 别用白色和黑色空格表示。在一个低通滤波窗口内可对多个低干扰子帧的 CQI 或多个高干扰子帧的 CQI进行滤波， 即相当于求出多个低干扰子帧或多个高 干扰子帧的 CQI平均值， 并可将滤波结果上报至服务节点， UE的服务节点可 在某一时刻子帧（图中显示在第 n子帧）上收到上报的滤波后的 CQI, 并确定 与当前接收时刻对应的测量参考子帧， 从而确定接收到的 CQI是基于哪几个 低干扰子帧或普通子帧得到的 CQI。
在图 6中， 低干扰子帧 CQI为 CQI—LI = age(CQH CQI(n - 6 ) , 即 经过低通滤波后得到的低干扰子帧子帧 n - 8和 n - 6的平均值；高干扰子帧的 CQI为 CG/_H/ = m^rag <¾/(" _ 7),C¾/(" _ 5),C¾/(" _ 4)) ,即经过低通滤波后得到 的普通子帧 n - 7、n - 5和 n - 4的平均值。如果 UE在本次上报中上报 Cg/_ZJ , 服务节点可据此确定参考子帧中低干扰子帧的 CQI; 如果 UE在本次上报中上 报 C¾/_H/ , 服务节点可据此确定参考子帧中高干扰子帧的 CQI。
通过上述实施例， 在一次测量和上报 CQI过程中， 无论是这个测量上报 过程针对的是普通子帧还是低干扰子帧，都可通过采用上述实施例实现，且对 多个同一干扰类型子帧的 CQI进行滤波有利于提高测量和上报精度。
图 7为本发明实施例提供的另一种信道状态信息上报方法的示意图，该方 法包括：
S71 : UE接收服务节点发送的 RRC信令， 所述 RRC信令中包括上报配 置信息， 所述上报配置信息包括上报间隔 Lcqi。
S72: 根据所述上报间隔 Lcqi, UE在 Lcqi个周期内执行 Lcqi次针对低干 扰子帧的信道质量指示测量与上报， 并在所述 Lcqi个周期后的下一个上报时 刻开始执行一次针对普通子帧的信道质量指示测量与上报，即在本过程中针对 低干扰子帧的第二 CQI上报周期是针对普通子帧的第一 CQI上报周期的 Lcqi 倍。
在周期性上报中， 一个上报周期可完成一次 CQI上报， 用于在本次上报 中上报一个频带的 CQI。 一个频带可被划分为多个带宽部分（BP, Bandwidth Part ), 因此该频带的 CQI可包括该频带自身的宽带 CQI和其多个带宽部分的 子带 CQI, 而且每个子带 CQI可能会在周期内重复上报多次。 图 8是以 Lcqi 为 2、 Np为 5ms, K等于 1为例对周期性上报进行简要说明， Νρ为上报时刻 间隔， Κ为子带上报的重复次数。 假设对于第一 CQI上报来说， 需要测量的 系统带宽被分为 3个带宽部分，则在频域范围上该第一 CQI包括 1个宽带 CQI ( W-CQI, Wideband-CQI )和 3个对应于不同带宽部分的子带 CQI ( S-CQI, Subband-CQI ), 因此在第一 CQI的一个上报周期内需要上报 4个 CQI, 所以 第一 CQI的上报周期内包括 4个上报时刻。 在时域上来看， 上报时刻间间隔 相同， 本实例中上报时刻 Np间隔 5ms, 在 0到 35ms间的 8个上报时刻上， 分别在 2个周期内上报 2次或者说 2轮第一 CQI。 对于第一 CQI来说， 在总 共 2个周期内依次上报 W-CQI1、 S-CQI 1 , S-CQI 1 , S-CQI 1、 W-CQI 1、 S-CQI1 , S-CQI 1和 S-CQI 1 , 其中 W-CQI 1是第一 CQI中的宽带 CQI, S-CQI 1是第一 CQI中的子带 CQI。 在实际应用中一个周期内的子带 CQI可被重复测量并上 报 K次， 由于在本示例中子带测量上报的重复次数 K为 1 , 因此在一个上报 周期内， 每个子带 CQI只被测量上报一次。 本实例中上报宽带 CQI在前、 上 报子带 CQI在后， 但在实际应用中这种顺序可自由调整。 当连续 2个周期的 第一 CQI上报完成后， 可在随后到来的下一个上报时刻开始上报第二 CQI。 也就是说， 在本例中， 每当上报 2个周期的低干扰子帧 CQI后只上报一个周 期的高干扰子帧 CQI。 具体地， 第二 CQI可包括宽带 CQI和子带 CQI, 也可 只包括宽带 CQI。 因此对于高干扰子帧和低干扰子帧这两种上报情况， 上报内 容可以不同， 第一 CQI上报周期和第二 CQI的上报周期也可以不同。 在图 8 中， 第二 CQI只包括宽带 CQI ( W-CQI2 ), 因此第二 CQI上>¾周期只包括一 个上报时刻， 但这种举例不用于限定本发明， 第二 CQI也可根据需要被配置 上报更多子带 CQI。
以上实施例以采用周期上 ^艮模式为例进行说明，当所述上 配置信息指示 采用非周期上报模式时， 可根据小型基站的触发来进行上报。 具体地， UE可 在连续 Lcqi次接收小型基站触发并上 第一 CQI后， 在第 Lcqi + 1次收到触 发时上报第二 CQI。 也就是说， 每当低干扰子帧 CQI被触发上报 Lcqi次后 , 只触发上报一次高干扰子帧 CQI。 在每次受到触发后， UE可在随后若干个上 报时刻将需要上报的宽带 CQI和子带 CQI上报至小型基站。与之前描述一样， 由于 CQI可包括宽带 CQI和若干子带 CQI, 所以在一次触发上报 CQI中需要 上报的 CQI数量可以有多个。 每次触发上报第一 CQI时所上报的 CQI数量与 每次触发上报第二 CQI时所上报的 CQI数量可以不同， 即对于第一 CQI和第 二 CQI, 在受到触发后进行一次上报所占用的时长可以不同。 当然， 如果需要 重复上报子带 CQI, 在一次触发后的上报周期中子带 CQI可被上报多次， 本 实施例对此不做限定。
在本实施例中，由于低干扰子帧的发射接收性能对整个系统的性能影响要 大于高干扰对系统的影响， 因此增加低干扰 CQI的上报频率有利于提高 CQI 上报效率，且上报过程依据周期展开，每个周期完成一次 CQI上报，每次 CQI 上报内容可以由一个或多个， 上报模式也可有多种，都可由本领域技术人员配 置， 并可由服务节点通知用户设备。 当一次 CQI上报的内容只有一个， 如只 有一个频带的宽带 CQI, 则一次上报占用一个上报时刻， 当一次 CQI上报的 内容只有多个， 即包括了频带的子带 CQI, 则本次上报占用多个上报时刻。 触 发上报可以与周期上报相类似， 每次上报可上报多个 CQI, 每个 CQI上报可 占据一个上报时刻。
上述实施例可进行进一步地变形，图 9为本发明实施例提供的另一种信道 状态信息上 "¾方法的示意图， 该方法包括：
S91 : UE接收服务节点发送的 RRC信令， 所述 RRC信令中包括上报配 置信息， 所述上报配置信息包括上报间隔 Lcqi和上报位置偏移 NOFFSET2。
S92: 根据所述上报间隔 Lcqi, UE在 Lcqi个周期内执行 Lcqi次针对低干 扰子帧的信道质量指示测量与上报， 并在所述 Lcqi个周期后经过 NOFFSET2 时刻开始执行一次针对普通子帧的信道质量指示测量与上报。 以 Lcqi为 2 、 Np为 5ms、 K为 1、 NOFFSET2为 3为例进行说明， 假设 系统带宽依然被分为 3个带宽部分（BP Bandwidth Part ), 在频域范围上该系 统带宽的 CQI由 1个宽带 CQI和 3个对应于不同带宽部分的子带 CQI组成， 20ms为一个第一 CQI上报周期， 每个第一 CQI上报周期内上报 4个 CQI。 当 连续 2个周期的第一 CQI上报完成后， 可在随后的第 NOFFSET2个偏移时刻 上报第二 CQI。 所述 NOFFSET2为非负整数， 当 NOFFSET2取 0时， 可表示 不上报第二 CQI。 参考图 10为例， NOFFSET2为 3 , 在第 35ms上报完 2个周 期的第一 CQI, 可在第 38ms上报第二 CQI的宽带 CQI ( W-CQI2 ), 并在下一 个周期内继续上报第一 CQI。 也就是说， 每当上报 2个循环周期的第一 CQI, 就插入一次第二 CQI上报。 本实施例由于第二 CQI的上报不受上报时刻的限 制， 可根据 NOFFSET2的指示在第一 CQI上 >¾周期完成后的某一偏移时刻上 报， 上报更加灵活， 且增加低干扰子帧的上报有利于提高准确度。
对于非周期性上报的情况， 也可借鉴上述插入上报的方法， UE可通过接 收服务节点的触发来上报 CQI。 每当 UE连续 Lcqi次接收触发并将所述第一 信道质量指示上报至所述服务节点后， 可在第 Lcqi 次收到触发后的第 NOFFSET2个子帧上开始将所述第二信道质量指示上报至所述服务节点。也就 是说， 第二 CQI上报不必接收单独的触发， 而是在第一 CQI触发达到一定次 数后的某一偏移时刻进行。由于第一 CQI被触发的频率是第二 CQI的 Lcqi倍， 有利于提高上报精度， 且根据偏移进行上报节省了一次额外触发流程。
上述实施例可避免上报的 CQI所对应的资源具有不同的干扰环境， 从而 提高 CQI的上报精度。 同时， 由于低干扰子帧的发射接收性能对整个系统的 性能影响要远大于高干扰对系统的影响， 因此在保证上报负荷一定的前提下， 提高用于上报低干扰子帧 CQI在总上报负荷中的比例， 能够提高测量和上报 CQI的效率， 有效的提高系统性能。
图 11为本发明实施例提供的另一种信道状态信息上报方法的示意图， 该 方法包括：
Sill : 接收服务节点发送的无线资源控制信令， 所述无线资源控制信令中 包括测量资源配置信息；
S112: 根据所述测量资源配置信息的指示，从用于测量信道质量指示的多 个参考子帧中确定出一组低干扰子帧；
S113: 在所述一组低干扰子帧上测量得到第一信道质量指示；
S114:仅将在所述一组低干扰子帧上测量得到信道质量指示上报至所述服 务节点。
在本实施例中， UE可将用于测量 CQI的子帧分为低干扰子帧和高干扰的 普通子帧， 仅将测量得到的低干扰子帧的 CQI上报至服务节点 (如 LPN等）， 可降低对不同干扰子帧混合滤波上报造成的误差， 提高上报精度。
如之前的介绍， 所述 UE的低干扰子帧可以是与对 UE造成干扰的节点的 近似空白子帧或组播广播单频网子帧相对应的子帧，当然对于低干扰子帧本实 施例同样不做限定， 只要 UE在某一子帧上受到干扰节点的影响比在普通子帧 上受到该干扰节点的影响小， 则该子帧可视为 UE的低干扰子帧。
进一步地， UE可通过测量分别得到所述一组低干扰子帧中每个低干扰子 帧的信道质量指示，对测量得到的多个低干扰子帧的信道质量指示进行低通滤 波，得到第一信道质量指示。 由于现有技术对所有用于测量的子帧的测量 CQI 进行滤波， 得到的结果不准确， 本实施例通过确定出低干扰子帧， 将低干扰子 帧的 CQI进行滤波， 可得到更加准确的测量结果， 提高上报精度。
为便于理解本发明， 下面给出一种用户设备实施例的结构示意图， 如图 12所示， 该用户设备包括：
信令接收单元 121 , 用于接收服务节点发送的无线资源控制信令， 所述无 线资源控制信令中包括上报配置信息， 所述上报配置信息包括上报间隔 Lcqi;
调度单元 122, 用于根据所述上报配置信息的指示， 每调度测量与上报单 元 123执行 Lcqi次针对低干扰子帧的信道质量指示测量与上报， 仅调度所述 测量与上报单元 123执行一次针对普通子帧的信道质量指示测量与上报； 所述测量与上报单元 123 , 用于执行针对低干扰子帧和普通子帧的信道质 量指示测量与上报。
在一种可能的具体实现中，如果所述上 配置信息进一步指示采用周期上 报模式， 所述调度单元 122具体用于每当在 Lcqi个周期内调度所述测量与上 报单元 123执行 Lcqi次针对低干扰子帧的信道质量指示测量与上报之后， 调 度所述测量与上报单元 123在所述 Lcqi个周期后的下一个上报时刻开始执行 一次针对普通子帧的信道质量指示测量与上报。所述调度单元 122可以是处理 器。 所述令接收单元 121和所述测量与上报单元 123可以分别是不同的接口。
在另一种可能的具体实现中，如果所述上报配置信息进一步指示采用非周 期上报模式， 所述调度单元 122具体用于每当连续 Lcqi次接收触发并调度所 述测量与上报单元 123执行针对低干扰子帧的信道质量指示测量与上报之后， 根据第 Lcqi + 1次收到的触发调度所述测量与上报单元 123执行一次针对普通 子帧的信道质量指示测量与上报。
在另一种可能的具体实现中，所述上报配置信息进一步指示上报位置偏移 NOFFSET2, 且如果所述上报配置信息进一步指示采用周期上报模式， 所述调 度单元 122具体用于每当在 Lcqi个周期内调度所述测量与上报单元 123执行 Lcqi次针对低干扰子帧的信道质量指示测量与上报之后，调度所述测量与上报 帧的信道质量指示测量与上报。
在另一种可能的具体实现中，所述上报配置信息进一步指示上报位置偏移 NOFFSET2, 且如果所述上报配置信息进一步指示采用非周期上报模式， 则所 述调度单元 122具体用于每当连续 Lcqi次接收触发并调度所述测量与上报单 元 123执行针对低干扰子帧的信道质量指示测量与上报后，调度所述测量与上 报单元 123在第 Lcqi次收到触发后经过 NOFFSET2时刻开始执行一次针对普 通子帧的信道质量指示测量与上报。
进一步地的， 如图 13所示， 提供另一种用户设备的结构， 该用户设备与 图 12对应的实施例结构类似， 但在所述测量与上报单元 123中进一步包括： 识别模块 131 , 用于根据所述测量资源配置信息的指示， 从用于测量信道质量 指示的多个参考子帧中确定一组低干扰子帧或一组普通子帧；测量与上报模块 132, 用于在所述一组低干扰子帧或一组普通子帧上测量得到信道质量指示并 将所述信道质量指示上报至所述服务节点。 识别模块 131 和测量与上报模块 132可以分别是处理器中的处理器单元。
本实施例的用户设备可采用不同的上报频率上报不同干扰类型子帧的
CQI, 且低干扰子帧对应的 CQI的上报更加频繁， 两类子帧 CQI的上报分别 进行， 不会产生混淆， 有利于提高上报精度。
图 14为本发明实施例提供的另一种用户设备的结构示意图， 该用户设备 包括：
信令接收单元 141 , 用于接收服务节点发送的无线资源控制信令， 所述无 线资源控制信令中包括测量资源配置信息；
子帧确定单元 142, 用于根据所述测量资源配置信息的指示， 从用于测量 信道质量指示的多个参考子帧中确定出一组低干扰子帧；
测量单元 143 , 用于在所述一组低干扰子帧上测量得到第一信道质量指 示；
上报单元 144, 用于仅将在所述一组低干扰子帧上测量得到信道质量指示 上报至所述服务节点。
进一步地， 所述测量单元 143 包括： 处理单元 1431 , 用于通过测量分别 得到所述一组低干扰子帧中每个低干扰子帧的信道质量指示，对测量得到的多 个低干扰子帧的信道质量指示进行低通滤波，得到第一信道质量指示。 测量单 元 143可以是处理器， 处理单元 1431为该处理器中的一个单元。
子帧确定单元 142也可以是处理器； 信令接收单元 141 和上报单元 144 可以分别是接口。
本实施例的用户设备避免不同干扰类型子帧的 CQI混合上报， 在测量得 到低干扰子帧 CQI后， 仅上报测量得到的低干扰子帧的 CQI, 提高上报 CQI 的精度。
图 15为本发明实施例提供的另一种信道状态信息上报方法的示意图， 该 方法包括：
S151 :接收服务节点发送的无线资源控制信令， 所述无线资源控制信令中 包括上报配置信息， 所述上报配置信息指示了上报位置偏移 NOFFSET2;
S152:根据所述上报配置信息的指示，在执行一次针对低干扰子帧的信道 质量指示测量与上报后经过 NOFFSET2时刻开始执行一次针对普通子帧的信 道质量指示测量与上报。
本实施例通过上 ^艮位置偏移 NOFFSET2信息的指示， 在测量与上 低干 不需要占用额外的上报时刻且上报方式更加灵活。在本实施例中， 可以每当针 对低干扰子帧 CQI执行一次 CQI测量上报， 都执行一次普通子帧的 CQI插入 上报， 这种测量上报方式可避免上报的 CQI所对应的资源具有不同的干扰环 境， 从而提高 CQI的上报精度。
具体地， 对于周期上报模式， 每当 UE在一个周期内执行一次针对低干扰 子帧的信道质量指示测量与上报之后， 在所述周期后经过 NOFFSET2时刻开 始执行一次针对普通子帧的信道质量指示测量与上报。 对于非周期上报模式， 当 UE接收一次触发并执行针对低干扰子帧的信道质量指示测量与上报后，在 该次收到触发后经过 NOFFSET2时刻开始执行一次针对普通子帧的信道质量 指示测量与上报。 对应于以上方法， 图 16为本发明实施例提供的另一种用户设备的结构示 意图， 所述用户设备包括：
信令接收单元 161 , 用于接收服务节点发送的无线资源控制信令， 所述无 线资源控制信令中包括上报配置信息，所述上报配置信息指示了上报位置偏移 NOFFSET2;
处理单元 162, 用于根据所述上报配置信息的指示， 在执行一次针对低干 扰子帧的信道质量指示测量与上报后经过 NOFFSET2时刻开始执行一次针对 普通子帧的信道质量指示测量与上报。
如果所述上报配置信息进一步指示采用周期上报模式，则所述在处理单元 162, 用于每当在一个周期内执行一次针对低干扰子帧的信道质量指示测量与 上报之后， 在所述周期后经过 NOFFSET2时刻开始执行一次针对普通子帧的 信道质量指示测量与上报；如果所述上报配置信息进一步指示采用非周期上报 模式， 则所述在处理单元 162, 用于当接收一次触发并执行针对低干扰子帧的 信道质量指示测量与上报后， 在该次收到触发后经过 NOFFSET2时刻开始执 行一次针对普通子帧的信道质量指示测量与上报。信令接收单元 161可以是接 口。 处理单元 162可以由硬件实现， 具体可以是处理器。
本发明实施例所涉及的用户设备可包括但不限于手机、笔记本电脑和平板 电脑等各类终端设备，所涉及的终端的服务节点可以是为该终端服务的小型家 庭基站等低功率的服务节点设备。
本发明实施例还提供一种通信系统， 包括小型基站和终端， 所述终端可采 用如之前实施例所述方法进行 CQI测量， 并将测得的 CQI上报至为其提供服 务的小型基站，在所述宏基站或其它设备对小型基站和终端间链路通信存在干 扰的情况下， 所述方法对不同干扰状况子帧进行分别测量上报，且低干扰子帧 上报更频繁， 从而提高反馈信道状态信息的精度， 有利于通信的正常进行。
本领域普通技术人员可以理解上述方法实施例中的全部或部分流程，是可 以通过计算机程序来指令相关硬件完成的，所述的程序可存储于一计算机可读 取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中， 所述的存储介质可为磁碟、光盘、只读存储记忆体（Read-Only Memory, ROM ) 或随机存！ ^己忆体 ( Random Access Memory, RAM )等。
以上所述仅为本发明的几个实施例，本领域的技术人员依据申请文件公开 的内容可以对本发明进行各种改动或变型而不脱离本发明的精神和范围。本领 的情况下可以互相结合形成新的实施例。

Claims

权 利 要 求
1、 一种信道状态信息上报方法， 其特征在于， 包括：
接收服务节点发送的无线资源控制信令，所述无线资源控制信令中包括上 报配置信息， 所述上报配置信息包括上报间隔 Lcqi;
根据所述上报配置信息的指示， 每执行 Lcqi次针对低干扰子帧的信道质 量指示测量与上报， 执行一次针对普通子帧的信道质量指示测量与上报。
2、 如权利要求 1所述的方法， 其特征在于， 如果所述上报配置信息进一 步指示采用周期上报模式， 则所述每执行 Lcqi次针对低干扰子帧的信道质量 指示测量与上报， 执行一次针对普通子帧的信道质量指示测量与上报包括： 上报之后， 在所述 Lcqi个周期后的下一个上报时刻开始执行一次针对普通子 帧的信道质量指示测量与上报。
3、 如权利要求 1所述的方法， 其特征在于， 如果所述上报配置信息进一 步指示采用非周期上报模式， 则所述每执行 Lcqi次针对低干扰子帧的信道质 量指示测量与上报， 执行一次针对普通子帧的信道质量指示测量与上报包括： 每当连续 Lcqi次接收触发并执行针对低干扰子帧的信道质量指示测量与 上报之后，根据第 Lcqi + 1次收到的触发执行一次针对普通子帧的信道质量指 示测量与上报。
4、 如权利要求 1所述的方法， 其特征在于， 所述上报配置信息进一步指 示上报位置偏移 NOFFSET2,且如果所述上报配置信息进一步指示采用周期上 报模式， 则所述每执行 Lcqi次针对低干扰子帧的信道质量指示测量与上报， 执行一次针对普通子帧的信道质量指示测量与上报包括：
子帧的信道质量指示测量与上报。
5、 如权利要求 1所述的方法， 其特征在于， 所述上报配置信息进一步指 示上报位置偏移 NOFFSET2,且如果所述上报配置信息进一步指示采用非周期 上报模式， 则所述每执行 Lcqi次针对低干扰子帧的信道质量指示测量与上报， 执行一次针对普通子帧的信道质量指示测量与上报包括：
每当连续 Lcqi次接收触发并执行针对低干扰子帧的信道质量指示测量与 上 ^艮后， 在第 Lcqi次收到触发后经过 NOFFSET2时刻开始执行一次针对普通 子帧的信道质量指示测量与上报。
6、 如权利要求 1至 5中任一项所述的方法， 其特征在于， 所述无线资源 控制信令中还包括测量资源配置信息；
所述执行一次针对低干扰子帧的信道质量指示测量与上报包括：
根据所述测量资源配置信息的指示，从用于测量信道质量指示的多个参考 子帧中确定出一组低干扰子帧；
在所述一组低干扰子帧上测量得到第一信道质量指示并将所述第一信道 质量指示上报至所述服务节点；
所述执行一次针对普通子帧的信道质量指示测量与上报包括：
根据所述测量资源配置信息的指示，从用于测量信道质量指示的多个参考 子帧中确定出一组普通子帧；
在所述一组普通子帧上测量得到第二信道质量指示并将所述第二信道质 量指示上报至所述服务节点。
7、 如权利要求 6所述的方法， 其特征在于， 所述在所述一组低干扰子帧 上测量得到第一信道质量指示包括：
通过测量分别得到所述一组低干扰子帧中每个低干扰子帧上的信道质量 指示，对测量得到的多个低干扰子帧上的信道质量指示进行低通滤波，得到第 一信道质量指示；
所述在所述一组普通子帧上测量得到第二信道质量指示包括：
通过测量分别得到所述一组普通子帧中每个普通子帧上的信道质量指示， 对测量得到的多个普通子帧上的信道质量指示进行低通滤波，得到第二信道质 量指示。
8、 如权利要求 1至 5中任一项所述的方法， 其特征在于， 所述低干扰子 帧与对当前用户设备造成干扰的节点的近似空白子帧或组播广播单频网子帧 相对应。
9、 一种信道状态信息上报方法， 其特征在于， 包括：
接收服务节点发送的无线资源控制信令，所述无线资源控制信令中包括测 量资源配置信息；
根据所述测量资源配置信息的指示，从用于测量信道质量指示的多个参考 子帧中确定出一组低干扰子帧；
在所述一组低干扰子帧上测量得到第一信道质量指示；
仅将在所述一组低干扰子帧上测量得到信道质量指示上报至所述服务节 点。
10、 如权利要求 9所述的方法， 其特征在于， 其特征在于， 所述在所述一 组低干扰子帧上测量得到第一信道质量指示包括：
通过测量分别得到所述一组低干扰子帧中每个低干扰子帧的信道质量指 示，对测量得到的多个低干扰子帧的信道质量指示进行低通滤波，得到第一信 道质量指示。
11、 如权利要求 9或 10所述的方法， 其特征在于， 所述低干扰子帧与对 当前用户设备造成干扰的节点的近似空白子帧或组播广播单频网子帧相对应。
12、 一种用户设备， 其特征在于， 包括：
信令接收单元， 用于接收服务节点发送的无线资源控制信令， 所述无线资 源控制信令中包括上报配置信息， 所述上报配置信息包括上报间隔 Lcqi; 调度单元， 用于根据所述上报配置信息的指示，每调度测量与上报单元执 行 Lcqi次针对低干扰子帧的信道质量指示测量与上报， 调度所述测量与上报 单元执行一次针对普通子帧的信道质量指示测量与上报；
所述测量与上报单元，用于执行针对低干扰子帧和普通子帧的信道质量指 示测量与上报。
13、 如权利要求 12所述的用户设备， 其特征在于， 如果所述上报配置信 息进一步指示采用周期上报模式， 所述调度单元用于每当在 Lcqi个周期内调 度所述测量与上报单元执行 Lcqi次针对低干扰子帧的信道质量指示测量与上 报之后， 调度所述测量与上报单元在所述 Lcqi个周期后的下一个上报时刻开 始执行一次针对普通子帧的信道质量指示测量与上报； 或者
如果所述上报配置信息进一步指示采用非周期上报模式，所述调度单元用 于每当连续 Lcqi次接收触发并调度所述测量与上报单元执行针对低干扰子帧 的信道质量指示测量与上报之后，根据第 Lcqi + 1次收到的触发调度所述测量 与上报单元执行一次针对普通子帧的信道质量指示测量与上报。
14、 如权利要求 12所述的用户设备， 其特征在于， 所述上报配置信息进 一步指示上报位置偏移 NOFFSET2;
如果所述上报配置信息进一步指示采用周期上报模式，所述调度单元用于 每当在 Lcqi个周期内调度所述测量与上报单元执行 Lcqi次针对低干扰子帧的 信道质量指示测量与上报之后， 调度所述测量与上报单元在所述 Lcqi个周期 后经过 NOFFSET2时刻开始执行一次针对普通子帧的信道质量指示测量与上 报； 或者
如果所述上报配置信息进一步指示采用非周期上报模式，则所述调度单元 用于每当连续 Lcqi次接收触发并调度所述测量与上报单元执行针对低干扰子 帧的信道质量指示测量与上报后， 调度所述测量与上报单元在第 Lcqi次收到 触发后经过 NOFFSET2时刻开始执行一次针对普通子帧的信道质量指示测量 与上报。
15、 如权利要求 12至 14中任一项所述的用户设备， 其特征在于， 所述测 量与上报单元包括：
识别模块， 用于根据所述测量资源配置信息的指示，从用于测量信道质量 指示的多个参考子帧中确定一组低干扰子帧或一组普通子帧；
测量与上报模块，用于在所述一组低干扰子帧或一组普通子帧上测量得到 信道质量指示并将所述信道质量指示上报至所述服务节点。
16、 一种用户设备， 其特征在于， 包括：
信令接收单元， 用于接收服务节点发送的无线资源控制信令， 所述无线资 源控制信令中包括测量资源配置信息；
子帧确定单元， 用于根据所述测量资源配置信息的指示，从用于测量信道 质量指示的多个参考子帧中确定出一组低干扰子帧；
测量单元， 用于在所述一组低干扰子帧上测量得到第一信道质量指示； 上报单元，用于仅将在所述一组低干扰子帧上测量得到信道质量指示上报 至所述服务节点。
17、 如权利要求 16所述的用户设备， 其特征在于， 所述测量单元包括： 处理单元，用于通过测量分别得到所述一组低干扰子帧中每个低干扰子帧 的信道质量指示， 对测量得到的多个低干扰子帧的信道质量指示进行低通滤 波， 得到第一信道质量指示。
18、 一种信道状态信息上报方法， 其特征在于， 包括：
接收服务节点发送的无线资源控制信令，所述无线资源控制信令中包括上 报配置信息， 所述上报配置信息指示了上报位置偏移 NOFFSET2;
根据所述上报配置信息的指示，在执行一次针对低干扰子帧的信道质量指 示测量与上报后经过 NOFFSET2时刻开始执行一次针对普通子帧的信道质量 指示测量与上报。
19、 如权利要求 18所述的用户设备， 其特征在于， 如果所述上报配置信 息进一步指示采用周期上报模式，所述在执行一次针对低干扰子帧的信道质量 指示测量与上报后经过 NOFFSET2时刻开始执行一次针对普通子帧的信道质 量指示测量与上报包括：
每当在一个周期内执行一次针对低干扰子帧的信道质量指示测量与上报 之后， 在所述周期后经过 NOFFSET2时刻开始执行一次针对普通子帧的信道 质量指示测量与上报。
20、 如权利要求 18所述的用户设备， 其特征在于， 如果所述上报配置信 息进一步指示采用非周期上报模式，所述在执行一次针对低干扰子帧的信道质 量指示测量与上报后经过 NOFFSET2时刻开始执行一次针对普通子帧的信道 质量指示测量与上报包括：
当接收一次触发并执行针对低干扰子帧的信道质量指示测量与上报后，在 该次收到触发后经过 NOFFSET2时刻开始执行一次针对普通子帧的信道质量 指示测量与上报。
21、 如权利要求 18至 20中任一项所述的用户设备， 其特征在于， 所述低 干扰子帧与对当前用户设备造成干扰的节点的近似空白子帧或组播广播单频 网子帧相对应。
22、 一种用户设备， 其特征在于， 包括：
信令接收单元， 用于接收服务节点发送的无线资源控制信令， 所述无线资 源控制信令中包括上报配置信息， 所述上报配置信息指示了上报位置偏移 NOFFSET2;
处理单元， 用于根据所述上报配置信息的指示， 在执行一次针对低干扰子 帧的信道质量指示测量与上报后经过 NOFFSET2时刻开始执行一次针对普通 子帧的信道质量指示测量与上报。
23、 如权利要求 22所述的用户设备， 其特征在于， 如果所述上报配置信 息进一步指示采用周期上报模式， 则所述在处理单元， 用于每当在一个周期内 执行一次针对低干扰子帧的信道质量指示测量与上报之后，在所述周期后经过 NOFFSET2时刻开始执行一次针对普通子帧的信道质量指示测量与上报。
24、 如权利要求 22所述的用户设备， 其特征在于， 如果所述上报配置信 息进一步指示采用非周期上报模式， 则所述在处理单元， 用于当接收一次触发 并执行针对低干扰子帧的信道质量指示测量与上报后，在该次收到触发后经过 NOFFSET2时刻开始执行一次针对普通子帧的信道质量指示测量与上报。
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