WO2012152045A1 - 干扰测量信令通知、干扰测量及反馈方法及其装置 - Google Patents

干扰测量信令通知、干扰测量及反馈方法及其装置 Download PDF

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Publication number
WO2012152045A1
WO2012152045A1 PCT/CN2011/085049 CN2011085049W WO2012152045A1 WO 2012152045 A1 WO2012152045 A1 WO 2012152045A1 CN 2011085049 W CN2011085049 W CN 2011085049W WO 2012152045 A1 WO2012152045 A1 WO 2012152045A1
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WIPO (PCT)
Prior art keywords
interference
subframe
measurement
base station
terminal
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PCT/CN2011/085049
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English (en)
French (fr)
Inventor
李儒岳
陈艺戬
郭森宝
唐红
Original Assignee
中兴通讯股份有限公司
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.)
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP11865383.1A priority Critical patent/EP2770770B1/en
Priority to US14/348,766 priority patent/US20140355468A1/en
Publication of WO2012152045A1 publication Critical patent/WO2012152045A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • H04L5/0092Indication of how the channel is divided
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057Physical resource allocation for CQI

Definitions

  • Interference measurement signaling notification is notified, interference measurement and feedback method and device thereof
  • the present invention relates to interference measurement technology, and in particular, to a method and a device for notifying interference measurement signaling, an interference measurement method and device, and a method and device for feeding back channel quality information.
  • the information (CSI, Channel State Information) that reflects the status of the downlink physical channel mainly includes the following three parameter information: Channel Quality Indication (CQI), Precoding Matrix Indication (PMI, Pre-coding Matrix Indicator) and rank indicator (RI, Rank Indicator).
  • CQI Channel Quality Indication
  • PMI Precoding Matrix Indication
  • RI rank indicator
  • CQI is an indicator to measure the quality of downlink channels.
  • the CQI index is represented by an integer value of 0 to 15, which respectively represent different CQI levels, and different CQI levels correspond to respective modulation modes and coding techniques (MCS, Modulation and Coding Scheme). 16 cases can be represented by 4-bit information.
  • MCS modulation modes and coding techniques
  • the meaning of the feedback CQI is: the UE can select a suitable transport block modulation coding level to recommend to the base station according to the channel quality, so that the base station performs modulation and coding according to the recommended information, so as to maximize the channel transmission capability. .
  • CQI can also be understood as the quantization of channel quality information. If the channel quality is good, it can support higher-order modulation and coding methods to obtain higher transmission speed. If the channel quality is poor, it can only be lower.
  • the modulation coding method of the order performs data transmission to ensure the robustness of the transmission performance.
  • RI, PMI, and CQI calculations have more mature algorithms, such as using the maximum capacity criterion to select the best RI, PMI, and CQI.
  • RI/PMI/CQI are not independently selected from each other, but are uniformly selected for the above parameters.
  • the accuracy of RI/PMI/CQI calculations and selection is affected by two factors: channel measurement and interference noise measurement.
  • Channel measurement can be implemented by measuring a Common Reference Signal (CRS, Common Reference Signal) or a Channel State Information-Reference Signal (CSI-RS) in an LTE/LTE-A system. Due to the better pilot design, a more accurate channel can be measured by CRS or CSI-RS.
  • CRS Common Reference Signal
  • CSI-RS Channel State Information-Reference Signal
  • Interference noise measurement is a technical bottleneck.
  • the wrong interference information may cause the number of layers to not match the actual channel quality. For example, it can only support 2 layers, but it is due to interference noise information.
  • the measurement error is misjudged to be able to support 4 layers. If the above error information is fed back to the base station, the error rate of the transmitted data may be quite high. Or, actually, only the low-order code modulation mode can be supported, and the misjudgment can support the high-order code modulation, which also causes the bit error rate to be too high. On the contrary, it is possible to support multi-layer and high-order code modulation, but actually only use less layer and lower-order coding to transmit, resulting in waste of transmission resources.
  • noise measurement is generally relatively simple, as the noise is generally caused by the device itself.
  • the interference situation mainly comes from other cells or other nodes, and the transmission technology of other cells or transmission nodes is different, for example, different precoding, or different transmission signals may cause changes in interference conditions. Therefore, noise measurement is the main problem currently facing.
  • Figure 1 is a schematic diagram of the averaging process of interference conditions for consecutive M ,. As shown in Figure 1, there are many methods for interference measurement.
  • the terminal can be used without any restrictions and use any interference measurement method.
  • a commonly used interference measurement algorithm is to average the interference of the previous M transmission timing intervals (TTI, Transmission Timing Interval) to obtain an average interference, and when calculating the CQI, assume that the average interference is affected. To calculate the CQI.
  • TTI Transmission Timing Interval
  • Figure 2 is a schematic diagram of the actual channel quality that does not match during transmission. As shown in Figure 2, if there is no data scheduling in the interfering cell, and the interference measurement of the terminal is still statistically determined, it may result in RI and CQI. If the error is judged, the actual channel quality will not match, the number of transmission layers and the modulation and coding mode will not match the channel quality, resulting in a large performance loss.
  • the base station does not control the interference measurement of the terminal. Therefore, the base station does not determine how many subframes the terminal uses for averaging.
  • the value of M can be any integer, so the base station cannot perform targeted adjustment according to the information reported by the UE. Summary of the invention
  • the main object of the present invention is to provide a notification method for interference measurement signaling.
  • the device, the interference measurement method and device, and the channel quality information feedback method and device can solve the problem that the subframe interference information cannot be accurately provided to the base station.
  • a notification method for interference measurement signaling including:
  • the network side notifies the terminal of the information of the M subframes included in the interference measurement subframe set or the channel quality measurement subframe set.
  • the interference measurement sub-frame set or the channel quality measurement sub-frame set information notification terminal is:
  • the network side carries the M in a high layer signaling or physical layer signaling, and notifies the terminal.
  • the signaling of the physical layer signaling and the triggering of the aperiodic channel state information CSI is carried in the same format of the physical downlink control channel PDCCH, and is sent to the terminal.
  • the M is a continuous number of interference measurement subframes or channel quality measurement subframes.
  • the terminal After receiving the notification of the interference measurement subframe set or the channel quality measurement subframe set information sent by the network side, the terminal performs interference measurement on the interference measurement subframe set or the channel quality measurement subframe set subframe, Calculate the average interference value;
  • the terminal determines channel quality indication CQI information according to the average interference value, and feeds back to the base station.
  • the interference measurement subframe set or the channel quality measurement subframe set information is the quantity information of the interference measurement subframe or the channel quality measurement subframe.
  • the subframe or channel quality measurement subframe of the interference measurement is consecutive M subframes.
  • the method further includes:
  • the base station adjusts the current modulation and coding mode according to the CQI fed back by the terminal and the scheduling information of the time period corresponding to the interference measurement subframe set or the channel quality measurement subframe set.
  • the base station adjusts the current modulation and coding mode according to the CQI fed back by the terminal and the scheduling information of the time period corresponding to the interference measurement subframe set or the channel quality measurement subframe set to:
  • the base station adjusts the current modulation and coding mode according to the CQI fed back by the terminal and the number of subframes transmitted by the interfering cell or the actual data of the interfering node.
  • a method for feeding back channel quality information includes:
  • the terminal performs interference measurement on one or more subframes designated by the base station, determines a CQI according to the measurement result, and feeds back the CQI to the base station.
  • the method further includes:
  • the method further includes:
  • the base station notifies the terminal by indicating the subframe offset indication, or the subframe number and the subframe offset indication, in the high layer signaling or the physical layer signaling.
  • the physical layer signaling and the signaling that triggers the aperiodic CSI reporting are carried in the same Format of the physical downlink control channel PDCCH, and sent to the terminal.
  • a method for feeding back channel quality information includes:
  • the terminal performs the specified interference channel measurement on a part of the resource locations on the subframe specified by the base station, and uses the measurement result and other interference and noise measurement results to determine the first CQI, and feeds the first CQI to the base station;
  • the terminal excludes interference on the specified interference channel, determines the second CQI only by considering the interference and noise measurement results from other interference channels, and feeds the second CQI back to the base station.
  • the terminal measures the interference channel specified by the base station as:
  • the terminal performs interference measurement of the interference channel by using a pilot frame on a subframe that includes one or more CSI-RS or power zero CSI-RS before the specified frame or the specified frame, and measures the reference used for channel measurement Subframe.
  • a notification device for interference measurement signaling comprising:
  • the notifying unit is configured to notify the terminal of the information of the M subframes included in the subframe set of the interference measurement or the channel quality measurement subframe set.
  • the notifying unit is further configured to: carry the information of the M subframes included in the interference measurement subframe set or the channel quality measurement subframe set in the high layer signaling or the physical layer signaling, and notify the terminal.
  • An interference measurement apparatus includes a receiving unit, a measurement calculation unit, and a feedback unit, where: a receiving unit, configured to receive a subframe set of interference measurement transmitted by a network side or information of M subframes included in a channel quality measurement subframe set announcement of;
  • a measurement calculation unit configured to perform interference measurement on each of the M subframes, and calculate an average interference value
  • a feedback unit configured to determine CQI information according to the average interference value, and feed back to the base station.
  • the device further includes:
  • the adjusting unit is located in the base station, and is configured to adjust the current modulation and coding mode according to the CQI fed back by the feedback unit and the scheduling information of the time period corresponding to the interference measurement subframe set or the channel quality measurement subframe set.
  • a feedback device for channel quality information comprising a measurement unit, a first determining unit and a feedback unit, wherein:
  • a measuring unit configured to perform interference measurement on a designated subframe of the base station; a determining unit, configured to determine a CQI according to the measurement result of the measuring unit; and a feedback unit, configured to feed back the CQI to the base station.
  • the device further includes a receiving unit and a second determining unit, where
  • a receiving unit configured for, by the base station, a subframe offset indication, or a subframe number, and a subframe offset indication
  • a second determining unit configured to determine, according to the subframe offset indication sent by the base station, by the receiving unit, the designated subframe as a sub-portion corresponding to a difference between a current subframe number and a subframe offset frame;
  • the receiving unit configured to determine, according to the subframe number and the subframe offset indication sent by the base station, by the receiving unit, the specified subframe as a sub-frame number and a subframe offset frame.
  • a feedback device for channel quality information comprising a measuring unit, a determining unit and a feedback unit, wherein:
  • a measuring unit configured to perform interference channel measurement on a part of resource locations on a subframe specified by the base station; and, to eliminate interference on the specified interference channel, and to measure interference from other interference channels;
  • a determining unit configured to measure the measurement result according to the interference channel of the partial resource position on the specified subframe and other interference and noise measurement results for determining the first CQI; excluding the interference on the specified interference channel, according to the interference of the other interference channel The measurement result and the noise determine the second CQI; the feedback unit is configured to feed back the first CQI and the second CQI to the base station.
  • the measuring unit is further configured to perform interference measurement of the interference channel by using a pilot frame on a subframe that includes one or more CSI-RS or power zero CSI-RS before the specified frame or the specified frame, and And measuring the interference of the remaining interference channel when the specified interference channel interference is zero, where the specified frame is a subframe corresponding to a sending moment at which the base station triggers measurement signaling.
  • the base station notifies the terminal of the CSI information to be measured, and the terminal performs the interference measurement according to the indication of the base station, and feeds the measurement result to the base station in time, and the base station can accurately determine the modulation and coding mode of the terminal according to the interference measurement result, thereby improving the data transmission. effectiveness.
  • Figure 1 is a schematic diagram of the averaging process of interference conditions for consecutive M ⁇ ;
  • 2 is a schematic diagram of a channel quality that does not match actual transmission during transmission
  • FIG. 3 is a schematic structural diagram of a notification device for interference measurement signaling according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of an interference measurement device according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a channel quality information feedback apparatus according to an embodiment of the present invention
  • FIG. 6 is another schematic structural diagram of a channel quality information feedback apparatus according to an embodiment of the present invention. detailed description
  • the basic idea of the present invention is: the base station notifies the terminal of the CSI information to be measured, the terminal performs the interference measurement according to the indication of the base station, and feeds the measurement result to the base station in time, and the base station can accurately determine the modulation and coding mode of the terminal according to the interference measurement result, thereby Improve data transfer efficiency.
  • This embodiment describes how the base station uses signaling to notify the UE of the measured subframe set or the M quality contiguous subframe information contained in the channel quality measurement subframe set.
  • 8 M-values can be identified by 8 status bits of 3 bits:
  • the indication manner of the M consecutive subframes included in the interference measurement subframe set or the channel quality measurement subframe set is not limited to the manners shown in Tables 2 and 3 above.
  • the number of bits indicating the M value is not limited to two or three, and can be set as needed.
  • This embodiment describes signaling for carrying the above M consecutive subframe information in radio resource control.
  • RRC Radio Resource Control
  • the RRC signaling belongs to the high layer signaling, and the base station can carry the 2 bit or 3 bit information described in Embodiment 1 and other bit information indicating the M value in the RRC layer signaling, and notify the UE. After the RRC layer signaling is valid, it will be maintained for a long time. Before the RRC layer signaling is changed, the M subframe information of the previous measurement or the M consecutive subframes included in the channel quality measurement subframe set are determined according to the M information of the previous notification.
  • the base station may also notify the information of the M to the UE through physical layer signaling. For example, with a trigger
  • the trigger signaling of the periodic CSI feedback is carried together in DCI (Downlink Control Information) Format 0 or DCI Format 4 defined by the LTE/LTE-A protocol.
  • the M information is bundled with the trigger information of the aperiodic CSI feedback for transmission, and the M information is only valid for the triggered aperiodic CSI feedback.
  • the base station triggers an aperiodic CSI feedback, and needs to report the CQI and notify at the same time.
  • This embodiment describes an interference measurement method of a UE.
  • the terminal obtains the information of the M by receiving the high layer or physical layer signaling, and further determines the M consecutive subframes included in the interference measurement subframe set or the channel quality measurement subframe set.
  • the terminal can perform the measurement according to the CRS (Common Reference Resource), and subtract the estimated pilot signal from the received signal on the CRS to obtain the interference received on the CRS.
  • the interference of the frame is II, 12 110 respectively, and the UE can assume that the interference of the current measurement subframe is the arithmetic average interference:
  • CSI-RS channel quality measurement pilot defined in the LTE protocol
  • the terminal measures the interference channel H of the interfering cell to the terminal, and performs interference calculation according to the interference channel H and the assumed interference and coding vector.
  • the interference and coding vector is w
  • w is a codeword of the codebook defined in LTE
  • the correlation matrix Rnn of the interference is Hw xw, H, where conjugate transpose is indicated.
  • Can also be dry 4 especially the correlation matrix Rnn Hwl wl'H'+ Hw2 w2'H'+ Hwn wn'H' ) /n, where wl , w2 wn are the code words of the codebook defined in LTE, and are different from each other.
  • the terminal performs interference measurement on one or more subframes designated by the base station, determines a CQI according to the measurement result, and feeds back the CQI to the base station.
  • the measurement method and feedback method are the same as the measurement method and feedback method of the above method.
  • the base station notifies the terminal by indicating the subframe offset indication, or the subframe number, and the subframe offset indication in the high layer signaling or the physical layer signaling.
  • the signaling of the physical layer signaling and the triggering of the aperiodic CSI is carried in the same format of the physical downlink control channel PDCCH, and is sent to the terminal.
  • the terminal receives the subframe offset indication sent by the base station, and determines the designated subframe as one or more subframes corresponding to the difference between the reference subframe number of the channel measurement and the subframe offset;
  • the terminal receives the subframe number and the subframe offset indication sent by the base station, and determines the specified subframe as a difference between a reference subframe number of the channel measurement and one or more subframe offsets. The corresponding subframe.
  • the base station can adjust the CSI according to the received measurement result, mainly to adjust the CQI.
  • the CQI fed back by the UE represents a modulation and coding scheme of the transmission, and is also equivalent to a Signal to Interference plus Noise Ratio (SINR) information.
  • SINR1 S/ ( I+N ), where S is the signal information, N is the noise power and other interference, and I is the neighbor interference information.
  • the number of consecutive subframes M included in the subframe set is 10, and 5 of the 10 subframes scheduled previously have neighboring interference.
  • the base station considers that the SINR1 fed back by the terminal actually averages 10 subframes.
  • the base station determines, according to its own scheduling information, that five subframes in the above ten subframes are not interfered by the neighboring cell. Therefore, if the subframe to be scheduled currently has neighboring interference, the base station determines the value of the neighboring interference (I) used by the UE to calculate the SINR1 in the SINR1 reported by the UE.
  • I neighboring interference
  • the ratio information can be estimated by the base station after multiple calculations, or by the UE.
  • This embodiment mainly describes a feedback method of channel quality information.
  • the example is mainly that the terminal uses the specified frame or one or more subframes including CSI-RS or power zero CSI-RS before the specified frame to perform interference measurement of the specified interference channel, and measures the specified interference channel interference. When the interference is zero, the interference of the remaining interference channels is fed back to the base station
  • the base station triggers the aperiodic CSI feedback by signaling, and specifies that the UE measures the channel information on the subframe n, and measures the first cell interference information in all or part of the resource positions of the one or more subframes before the subframe n or n.
  • the subframe n is a subframe corresponding to the transmission timing of the base station trigger signaling.
  • the base station can determine the subframe to be measured by the subframe n and the corresponding offset. For example, when carrying the offset information, the terminal considers that the offset is subtracted from n (when the specified subframe is multiple, the base station notifies multiple offsets, and the offset is a non-negative integer value).
  • the interference measurement of the specified interference channel is performed on the subframe.
  • the subframes specified by the base station are all subframes including CSI-RS or zero-power CSI-RS (zeropowerCSI-RS).
  • the terminal will start from the n subframe, and on the subframe of the n subframe and its previous CSI-RS or zero-power CSI-RS (zeropowerCSI-RS)
  • the pilot position performs the measurement of the specified interference channel interference, and obtains the first interference measurement result, and calculates the quantization result according to the channel measurement result, the first interference measurement result, the interference measurement result of the other interference channel, and the noise.
  • the first CSI of the CSI information is the measurement of the specified interference channel interference, and obtains the first interference measurement result, and calculates the quantization result according to the channel measurement result, the first interference measurement result, the interference measurement result of the other interference channel, and the noise.
  • the CSI information includes one or more of RI, PMI, and CQI parameters.
  • the zeropower CSI-RS is a location where the cell is empty. These locations are generally other small cells (interfering cells) that are transmitting pilots. Therefore, interference channel information of other cells can be detected at these locations.
  • the terminal also measures interference from other interference channels of interference sources other than the interference channel specified by the base station. Only the interference measurement results and noise of other interference channels are considered, and the second CSI for the quantized CSI information is calculated in combination with the channel measurement result.
  • the terminal feeds back the calculated first CSI and the second CSI on the data channel of the designated uplink subframe.
  • the base station may determine, according to the first CSI and the second CSI, the interference situation of the interference channel of the specified interference channel and the interference condition of the other interference channel to the terminal serving cell, to determine whether to close some interference sources to ensure the service quality of the terminal serving cell. .
  • This embodiment mainly describes a feedback method of channel quality information.
  • the base station triggers the aperiodic CSI feedback by using the signaling, and carries the trigger information in the DCI Format. According to the location and the pre-determination of the DCI Format, the designated UE measures the channel information in the subframe n.
  • the base station notifies the UE to separately measure the interference of the specified subframes m_l, m_2, m_p, specifically, all or part of the resource locations RE resource sets REset_l, REset_2..., Reset_P on the subframes m_l, m_2, m_p Interference, second interference, ..., information of the p-interference.
  • the subframe n is determined according to the sending moment of the base station trigger signaling.
  • the terminal calculates CSI information for quantization according to the first interference of the specified subframes, the information of the second interference p-interference, and the noise of each designated subframe in combination with the channel measurement results of the specified subframes, and notifies the base station. .
  • the base station selects the same CSI as the foregoing specified subframe according to the interference condition of the current subframe to be scheduled, thereby determining the modulation and coding mode of the terminal.
  • FIG. 3 is a schematic structural diagram of an apparatus for notifying measurement signaling according to an embodiment of the present invention. As shown in FIG. 3, the apparatus for notifying the interference measurement signaling according to the embodiment of the present invention includes:
  • the notifying unit 30 notifies the terminal of the information of the M subframes included in the subframe set or the channel quality measurement subframe set used for the interference measurement.
  • the foregoing notification unit 30 is further configured to notify the terminal by carrying the M in a high layer signaling or physical layer signaling.
  • the signaling of the physical layer signaling and the triggering of the aperiodic channel state information CSI is carried in the same format of the Physical Downlink Control Channel (PDCCH) and sent to the terminal.
  • PDCH Physical Downlink Control Channel
  • the notification device of the interference measurement signaling shown in FIG. 3 is designed to implement the foregoing notification method of interference measurement signaling, and the notification unit in the notification device of the interference measurement signaling shown in FIG.
  • the function of 30 can be understood by referring to the description of the foregoing method, and the function of the processing unit can be realized by a program running on a processor, or can be realized by a specific logic circuit.
  • the interference measuring apparatus includes a receiving unit 40, a measuring and calculating unit 41, and a feedback unit 42, wherein:
  • the receiving unit 40 is configured to receive a notification of a subframe set or a channel quality measurement subframe set information of the interference measurement sent by the network side;
  • the measurement calculation unit 41 is configured to perform interference measurement on each subframe of the interference measurement subframe set or the channel quality measurement subframe set, and calculate an average interference value;
  • the feedback unit 42 is configured to determine CQI information according to the average interference value, and feed back to the base station.
  • the interference measurement device of the embodiment of the present invention further includes:
  • the adjusting unit (not shown in FIG. 4) is located in the base station, and is configured to: according to the CQI fed back by the feedback unit and the scheduling information of the time period corresponding to the interference measurement subframe set or the channel quality measurement subframe set, The current modulation and coding mode is adjusted.
  • the interference measuring apparatus shown in FIG. 4 is designed to implement the foregoing interference measuring method, and the functions of the processing units in the interference measuring apparatus shown in FIG. 4 can be understood by referring to the description of the foregoing method.
  • the functions of the various processing units can be implemented by a program running on the processor, or by a specific logic circuit.
  • FIG. 5 is a schematic structural diagram of a channel quality information feedback apparatus according to an embodiment of the present invention.
  • the channel quality information feedback apparatus includes a measurement unit 50, a first determining unit 51, and a feedback unit 52. among them:
  • the measuring unit 50 is configured to perform interference measurement on a designated subframe of the base station
  • the first determining unit 51 is configured to determine a CQI according to the measurement result of the measuring unit, and the feedback unit 52 is configured to feed back the CQI to the base station.
  • the feedback device for channel quality information in the embodiment of the present invention further includes a receiving unit (not shown in FIG. 5) and a second determining unit (not shown in FIG. 5). Out), where
  • a receiving unit configured for, by the base station, a subframe offset indication, or a subframe number, and a subframe offset indication
  • a second determining unit configured to: according to the subframe offset sent by the base station received by the receiving unit a shift indicator, where the specified subframe is determined as a subframe corresponding to a difference between a current subframe number and a subframe offset;
  • the receiving unit configured to determine, according to the subframe number and the subframe offset indication sent by the base station, by the receiving unit, the specified subframe as a sub-frame number and a subframe offset frame.
  • the feedback device of the channel quality information shown in FIG. 5 is designed to implement the foregoing feedback method of channel quality information, and the functions of each processing unit in the feedback device of the channel quality information shown in FIG. It can be understood by referring to the description of the foregoing embodiment six that the functions of the processing units can be implemented by a program running on the processor, or can be realized by a specific logic circuit.
  • FIG. 6 is another schematic structural diagram of a channel quality information feedback apparatus according to an embodiment of the present invention.
  • the channel quality information feedback apparatus includes a measurement unit 60, a determining unit 61, and a feedback unit 62. among them:
  • the measuring unit 60 is configured to: perform interference channel measurement on a part of resource locations on the subframe specified by the base station; and, to eliminate interference on the specified interference channel, and measure interference from other interference channels;
  • a determining unit 61 configured to measure the measurement result according to the interference channel of the partial resource position on the specified subframe and other interference and noise measurement results for determining the first CQI; excluding the interference on the specified interference channel, according to other interference channels The measurement result of the interference and the noise determine the second CQI;
  • the feedback unit 62 is configured to feed back the first CQI and the second CQI to the base station.
  • the measuring unit 60 is further configured to perform interference measurement of the interference channel by using a pilot position on a subframe that includes one or more CSI-RSs or power zeros CSI-RSs before the specified frame or the specified frame, and the measurement center The interference of the remaining interference channel when the specified interference channel interference is zero, wherein the specified frame is a subframe corresponding to the sending moment of the base station triggering measurement signaling.
  • the feedback device of the channel quality information shown in FIG. 6 is designed to implement the foregoing feedback method of channel quality information, and the functions of each processing unit in the feedback device of the channel quality information shown in FIG. It can be understood by referring to the description of the foregoing fifth embodiment that the functions of each processing unit can be implemented by a program running on a processor, or can be realized by a specific logic circuit.

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Description

干扰测量信令通知、 干扰测量及反馈方法及其装置 技术领域
本发明涉及干扰测量技术, 尤其涉及一种干扰测量信令的通知方法及 装置, 干扰测量方法及装置, 以及, 信道质量信息的反馈方法及装置。 背景技术
在长期演进系统(LTE, Long Term Evolution ) 中, 反映下行物理信道 状态的信息( CSI, Channel State Information )主要包括以下 3个参数信息: 信道质量指示(CQI, Channels Quality Indication ), 预编码矩阵指示(PMI, Pre-coding Matrix Indicator )和秩指示 ( RI, Rank Indicator )。
其中, CQI为衡量下行信道质量好坏的一个指标。 在 3GPP TS 36.213 协议中, CQI索引以 0 ~ 15的整数值来表示, 分别代表了不同的 CQI等级, 不同 CQI等级对应着各自的调制方式和编码技术(MCS, Modulation and Coding Scheme ), 共分 16种情况, 可以采用 4比特信息来表示。 CQI索引 与 MCS对应关系如下表 1所示:
CQI 索引 调制方式 码率 x 1024 效率
0 超出
1 QPSK 78 0.1523
2 QPSK 120 0.2344
3 QPSK 193 0.3770
4 QPSK 308 0.6016
5 QPSK 449 0.8770
6 QPSK 602 1.1758
7 16QAM 378 1.4766 8 16QAM 490 1.9141
9 16QAM 616 2.4063
10 64QAM 466 2.7305
11 64QAM 567 3.3223
12 64QAM 666 3.9023
13 64QAM 772 4.5234
14 64QAM 873 5.1152
15 64QAM 948 5.5547
表 1
在 LTE系统中, 反馈 CQI的意义在于: UE可以根据信道质量, 选择 一种合适的传输块调制编码等级推荐给基站 , 使得基站根据该推荐信息进 行调制编码, 以最大程度发挥其信道的传输能力。
从另外一个角度而言, CQI也可以理解为信道质量信息的量化, 如果 信道质量好, 可以支持较高阶的调制编码方式, 获得更高的传输速度, 如 果信道质量差, 只能以较低阶的调制编码方式进行数据传输, 以保障传输 性能的鲁棒性。
现有技术中, RI、 PMI和 CQI的计算都有较成熟算法, 比如利用容量 最大准则选取最佳的 RI、 PMI和 CQI。 一般而言, RI/PMI/CQI不是互相独 立选择的, 而是对上述参数进行统一选择。 RI/PMI/CQI计算和选择的准确 程度受到两方面的因素影响: 信道测量和干扰噪声测量。
信道测量可以是通过对 LTE/LTE-A 系统中的公共参考信号 (CRS , Common Reference Signal )或者是信道状态信息测量参考信号 (CSI-RS, Channel State Information-Reference Signal )进行测量而实现, 目前, 由于较 好的导频设计, 可以通过 CRS或 CSI-RS测得较为准确的信道。
干扰噪声测量则是一个技术瓶颈, 错误的干扰信息可能导致层数与实 际信道质量状况不匹配, 比如实际只能支持 2层, 却由于干扰噪声信息的 测量错误, 误判为能够支持 4层, 若向基站反馈了上述错误信息, 可能导 致传输数据的误码率相当高。 或者是, 实际只能支持低阶的编码调制方式, 而误判为可以支持高阶编码调制, 也会导致误码率过高。 反之, 则有可能 能够支持多层及高阶编码调制, 但实际只使用了较少层和低阶编码方式进 行传输, 导致传输资源的浪费。
噪声的测量一般相对简单, 因为噪声一般由器件本身所致。 而干扰情 况主要来自于其它小区或其它节点, 且由于其它小区或传输节点的传输技 术不同, 例如预编码不同、 或者发射信号不同都可能导致干扰情况的变化。 因此, 噪声测量是当前所面临的主要问题。
图 1为连续 M个 ΤΉ的干扰情况平均化处理示意图, 如图 1所示, 现 有的干扰测量方法有很多种, 终端可以不受协议的限制, 使用任意的干扰 测量方法。 常用的一种干扰测量算法为, 对之前 M个传输定时间隔(TTI, Transmission Timing Interval )的干扰情况进行平均化处理,得到一个平均的 干扰, 并在计算 CQI时, 假设受到该平均干扰的影响来计算 CQI。
但对于终端来说, 当前并不清楚干扰小区是否有数据发射, 只有基站 在集中式调度的情况下可以确定干扰小区当前的数据调度情况。 图 2 为传 输过程中不匹配实际的信道质量的示意图, 如图 2所示, 当前若干扰小区 并无数据调度情况, 而终端的干扰测量仍然进行统计平均确定, 可能会导 致对 RI以及 CQI的判断错误,传输时会不匹配实际的信道质量,传输层数 和调制编码方式等, 与信道质量不匹配, 造成较大的性能损失。
在现有协议中, 基站并不对终端的干扰测量进行控制, 因此, 基站并 不确定终端采用了多少个子帧进行了平均处理。 M 的值可以为任意整数, 因此基站也不能根据 UE上报的信息进行针对性的调整。 发明内容
有鉴于此, 本发明的主要目的在于提供一种干扰测量信令的通知方法 及装置, 干扰测量方法及装置, 以及, 信道质量信息的反馈方法及装置, 能解决不能将子帧干扰信息准确提供基站的问题。
为达到上述目的, 本发明的技术方案是这样实现的:
一种干扰测量信令的通知方法, 包括:
网络侧将干扰测量的子帧集合或信道质量测量子帧集合中包含的 M个 子帧的信息通知终端。
优选地, 所述将干扰测量的子帧集合或信道质量测量子帧集合信息通 知终端为:
所述网络侧将所述 M承载于高层信令或物理层信令中 ,通知所述终端。 优选地, 所述物理层信令与触发非周期信道状态信息 CSI上报的信令 载于物理下行控制信道 PDCCH的同一个 Format内, 发送给所述终端。 优选地, 所述 M为干扰测量的子帧或信道质量测量子帧的连续数量。 一种干扰测量方法, 包括:
所述终端接收网络侧发送的干扰测量的子帧集合或信道质量测量子帧 集合信息的通知后, 对所述干扰测量的子帧集合或信道质量测量子帧集合 的各子帧进行干扰测量, 计算平均干扰值;
所述终端根据所述平均干扰值确定信道质量指示 CQI信息, 并反馈给 所述基站。
优选地, 所述干扰测量的子帧集合或信道质量测量子帧集合信息为干 扰测量的子帧或信道质量测量子帧的数量信息。
优选地,所述干扰测量的子帧或信道质量测量子帧为连续的 M个子帧。 优选地, 所述方法还包括:
所述基站根据所述终端反馈的 CQI以及与所述干扰测量的子帧集合或 信道质量测量子帧集合对应的时段的调度信息, 对当前的调制编码方式进 行调整。 优选地, 所述基站根据所述终端反馈的 CQI以及与所述干扰测量的子 帧集合或信道质量测量子帧集合对应的时段的调度信息, 对当前的调制编 码方式进行调整为:
所述基站根据所述终端反馈的 CQI以及干扰小区或干扰节点实际的数 据传输的子帧数量, 对当前的调制编码方式进行调整。
一种信道质量信息的反馈方法, 包括:
终端在基站指定的一个或多个子帧上进行干扰测量, 根据测量结果确 定 CQI , 将所述 CQI反馈给所述基站。
优选地, 所述方法还包括:
所述终端接收到所述基站发送的子帧偏移量指示, 将所述指定子帧确 定为信道测量的参考子帧号与子帧偏移量之差所对应的一个或多个子帧; 或者, 所述终端接收到所述基站发送的子帧号以及子帧偏移量指示, 将所述指定子帧确定为信道测量的参考子帧号与一个或多个子帧偏移量之 差所对应的子帧。
优选地, 所述方法还包括:
所述基站将所述子帧偏移量指示, 或子帧号以及子帧偏移量指示承载 于高层信令或物理层信令中, 通知所述终端。
优选地, 所述物理层信令与触发非周期 CSI上报的信令承载于物理下 行控制信道 PDCCH的同一个 Format内, 发送给所述终端。
一种信道质量信息的反馈方法, 包括:
终端对基站指定的子帧上的部分资源位置进行指定的干扰通道测量, 并将测量结果以及其他干扰和噪声的测量结果用于确定第一 CQI, 将所述 第一 CQI反馈给所述基站;
终端排除指定的干扰通道上干扰, 只考虑来自其他干扰通道的干扰和 噪声的测量结果确定第二 CQI, 并将第二 CQI反馈给基站。 优选地, 所述终端对基站指定的干扰通道进行测量为:
所述终端利用指定帧或者指定帧之前的一个或多个包含 CSI-RS或功率 为零 CSI-RS的子帧上的导频位置进行干扰通道的干扰测量, 以及, 测量所 用于信道测量的参考子帧。
一种干扰测量信令的通知装置, 包括:
通知单元, 用于将干扰测量的子帧集合或信道质量测量子帧集合中包 含的 M个子帧的信息通知终端。
优选地, 所述通知单元进一步用于, 将干扰测量的子帧集合或信道质 量测量子帧集合中包含的 M 个子帧的信息承载于高层信令或物理层信令 中, 通知所述终端。
一种干扰测量装置, 包括接收单元、 测量计算单元和反馈单元, 其中: 接收单元, 用于接收网络侧发送的干扰测量的子帧集合或信道质量测 量子帧集合中包含的 M个子帧的信息的通知;
测量计算单元, 用于对所述 M个子帧中的各子帧进行干扰测量, 计算 平均干扰值;
反馈单元, 用于根据所述平均干扰值确定 CQI信息, 并反馈给所述基 站。
优选地, 所述装置还包括:
调整单元, 位于基站中, 用于根据所述反馈单元反馈的 CQI以及与所 述干扰测量的子帧集合或信道质量测量子帧集合对应的时段的调度信息, 对当前的调制编码方式进行调整。
一种信道质量信息的反馈装置, 包括测量单元、 第一确定单元和反馈 单元, 其中:
测量单元, 用于在基站指定子帧上进行干扰测量; 确定单元, 用于根据所述测量单元的测量结果确定 CQI; 反馈单元, 用于将所述 CQI反馈给所述基站。
优选地, 所述装置还包括接收单元和第二确定单元, 其中,
接收单元, 用于所述基站发送的子帧偏移量指示, 或子帧号以及子帧 偏移量指示;
第二确定单元, 用于根据所述接收单元接收的所述基站发送的子帧偏 移量指示, 将所述指定子帧确定为当前子帧号与子帧偏移量之差所对应的 子帧;
或者, 用于根据所述接收单元接收的所述基站发送的子帧号以及子帧 偏移量指示, 将所述指定子帧确定为子帧号与子帧偏移量之差所对应的子 帧。
一种信道质量信息的反馈装置, 包括测量单元、 确定单元和反馈单元, 其中:
测量单元, 用于对对基站指定的子帧上的部分资源位置进行指定的干 扰通道测量; 以及, 排除指定的干扰通道上干扰, 测量来自其他干扰通道 的干扰;
确定单元, 用于根据指定的子帧上的部分资源位置的干扰通道测量测 量结果以及其他干扰和噪声的测量结果用于确定第一 CQI; 排除指定的干 扰通道上干扰, 根据其他干扰通道的干扰的测量结果和噪声确定第二 CQI; 反馈单元, 用于将所述第一 CQI以及第二 CQI反馈给所述基站。
优选地, 所述测量单元, 进一步用于利用指定帧或者指定帧之前的一 个或多个包含 CSI-RS或功率为零 CSI-RS的子帧上的导频位置进行干扰通 道的干扰测量, 以及, 测量所述指定的干扰通道干扰为零时其余干扰通道 的干扰, 其中, 所述指定帧为所述基站触发测量信令的发送时刻所对应的 子帧。 本发明中, 基站将待测量的 CSI信息通知给终端, 终端按照基站指示 进行干扰测量, 并将测量结果及时反馈给基站, 基站可以根据干扰测量结 果准确确定终端的调制编码方式, 从而提高数据传输效率。 附图说明
图 1为连续 M个 ΤΉ的干扰情况平均化处理示意图;
图 2为传输过程中不匹配实际的信道质量的示意图;
图 3为本发明实施例的干扰测量信令的通知装置的结构示意图; 图 4为本发明实施例的干扰测量装置的结构示意图;
图 5为本发明实施例的信道质量信息的反馈装置的结构示意图; 图 6为本发明实施例的信道质量信息的反馈装置的另一结构示意图。 具体实施方式
本发明的基本思想为: 基站将待测量的 CSI信息通知给终端, 终端按 照基站指示进行干扰测量, 并将测量结果及时反馈给基站, 基站可以根据 干扰测量结果准确确定终端的调制编码方式, 从而提高数据传输效率。
为使本发明的目的, 技术方案和优点更加清楚明白, 以下举实施例并 参照附图, 对本发明进一步详细说明。
实施例一
本实施例描述基站如何使用信令通知 UE干扰测量的子帧集合或信道 质量测量子帧集合包含的 M个连续子帧信息。
如下表 2所示, 可用 3bit的 8个状态位标识 8个 M值:
Figure imgf000010_0001
100 40 子帧
101 80 子帧
110 160 子帧
111 320 子帧
表 2
也可以如表 3所示, 用 2bit的 4个状态位标识 4个 M值:
Figure imgf000011_0001
表 3
本发明中, 干扰测量的子帧集合或信道质量测量子帧集合包含的 M个 连续子帧的指示方式并不限于上述表 2及表 3所示方式。 指示 M值的比特 数不限于 2个或 3个, 可根据需要而设置。
上述表 2以及表 3中的对应关系一旦确定, 将通知给终端或事先配置 于终端中。
实施例二
本实施例描述了承载上述 M 个连续子帧信息的信令在无线资源控制
( RRC, Radio Resource Control )层传输或物理层传输的两种情况。
RRC信令属于高层信令,基站可以在 RRC层信令中承载是实施例 1中 描述的 2bit或 3bit信息, 以及指示 M值的其他比特信息, 并通知 UE。 该 RRC层信令生效后会维持较长时间,在 RRC层信令更改前都按照前次通知 的 M信息确定干扰测量的子帧集合或信道质量测量子帧集合包含的 M个连 续子帧。
基站还可以通过物理层信令来通知 M的信息给 UE。 比如, 与触发非 周期 CSI反馈的触发信令一起承载于 LTE/LTE-A协议定义的 DCI( Downlink Control Information ) Format 0或 DCI Format 4中。
M的信息与非周期 CSI反馈的触发信息绑定在一起进行传输, 并且, 该 M信息只对此次被触发的非周期 CSI反馈有效。
比如, 基站触发了一次非周期 CSI反馈, 需要上报 CQI, 并同时通知
M=10。对于此次的 RI/PMI/CQI计算, 该 UE根据 M=10确定干扰测量的子 帧集合, 并测得平均的干扰, 并将该平均的干扰信息用于此次触发的 RI/PMI/CQI计算。
实施例三
本实施例描述 UE的干扰测量方法。
终端通过接收高层或物理层信令获得 M的信息, 进一步确定了干扰测 量的子帧集合或信道质量测量子帧集合包含的 M个连续子帧。
终端可以根据 CRS ( Common Reference resource )进行干 4尤测量, 用 CRS上的接收信号减去估计出的导频信号得到测得 CRS上受到的干扰, 以 M=10为例进行说明, 假设 10个子帧的干扰分别为 II , 12 110, UE可 以假设当前测量子帧的干扰为算术平均干扰:
1= ( 11+12+ +110 ) /10
也可以是加权平均干扰, 比如 1= ( al X 11+ a2 12 +al0 110 ) I
( al+a2, +... , +al0 )。
终端可以根据 CSI-RS ( LTE协议中定义的信道质量测量导频 )进行干 扰测量, 通过 CSI-RS测得干扰信道 H, 以 M=l为例进行说明:
终端测得干扰小区到该终端的干扰信道 H, 并根据该干扰信道 H以及 假设干扰与编码矢量, 进行干扰计算。
比如, 假设干扰与编码矢量为 w, w为 LTE中定义码本的一个码字, 得到干扰的相关矩阵 Rnn为 Hw x w,H,, 其中,表示共轭转置。 也可以是干 4尤的相关矩阵 Rnn= Hwl wl'H'+ Hw2 w2'H'+ Hwn wn'H' ) /n, 其 中 wl , w2 wn为 LTE中定义码本的码字, 且互不相同。
或者, 终端在基站指定的一个或多个子帧上进行干扰测量, 根据测量 结果确定 CQI, 将所述 CQI反馈给所述基站。 测量方式及反馈方式与上述 方式测量方式及反馈方式相同。
具体的, 基站将所述子帧偏移量指示, 或子帧号以及子帧偏移量指示 承载于高层信令或物理层信令中, 通知所述终端。 上述物理层信令与触发 非周期 CSI上报的信令承载于物理下行控制信道 PDCCH的同一个 Format 内, 发送给所述终端。
终端接收到所述基站发送的子帧偏移量指示, 将指定子帧确定为信道 测量的参考子帧号与子帧偏移量之差所对应的一个或多个子帧;
或者, 所述终端接收到所述基站发送的子帧号以及子帧偏移量指示, 将所述指定子帧确定为信道测量的参考子帧号与一个或多个子帧偏移量之 差所对应的子帧。
实施例四
基站可以根据接收到的测量结果对 CSI进行调整, 主要是对 CQI进行 调整。 以下以 CQI为例进行说明:
UE反馈的 CQI代表了一个传输的调制编码方式,也相当于一个信号与 干扰噪声比( SINR, Signal to Interference plus Noise Ratio )信息。 SINR1= S/ ( I+N ),其中 S是信号信息, N是噪声功率和其他干扰, I是邻区干扰信息。
以子帧集合包含的连续子帧数目 M为 10,之前调度的 10个子帧中有 5 个存在邻区干扰为例,基站考虑到终端所反馈的 SINR1实际上对 10个子帧 进行了平均, 而基站根据自身的调度信息, 确定上述 10个子帧中 5个子帧 未受邻区干扰。 因此, 如果当前要调度的子帧是有邻区干扰的, 则基站确 定 UE上报的 SINR1中, UE计算 SINR1时所使用的邻区干扰( I ) 的值偏 小; 因此, 基站需要对当前存在邻区干扰的待调整子帧的 SINR2在 SINR1 基础上进行调整, 具体为: SINR2= S/ ( 2I+N )。 此时, 只需要基站获得 I 和 N的比例信息,即可确定出待调整的 I值,从而对当前待调度子帧的 SINR 进行调整, 该比例信息可以由基站进行估计, 或者由 UE上报。
如果要调度的子帧是没有干扰的, 则基站确定 UE上报的信息 SINR1 中, UE计算 SINR1时所使用的邻区干扰(I ) 的值偏大, 所以基站对当前 待调度子帧的 SINR3进行调整, 具体为 SINR3=S/N。 此时, 只需要基站获 得 I和 N的比例信息, 即可对 SINR3进行调整, 该比例信息可以基站经过 多次测算进行估计, 或者由 UE上 ·^艮。
实施例五
本实施例主要描述一种信道质量信息的反馈方法。 本示例主要是终端 利用指定帧或者指定帧之前的一个或多个包含 CSI-RS或功率为零 CSI-RS 的子帧进行指定的干扰通道的干扰测量, 以及, 测量所述指定的干扰通道 干扰为零时其余干扰通道的干扰, 将所测量的两种干扰结果反馈给所述基 站
基站通过信令触发非周期的 CSI反馈,并指定 UE在子帧 n上测量信道 信息, 在子帧 n或 n之前的一个或多个子帧的全部或部分资源位置测量第 一小区干扰信息。 子帧 n为基站触发信令的发送时刻对应的子帧。
基站可以通过子帧 n及对应的偏移量来确定之前待测量的子帧。 例如, 当携带有偏移量信息时, 终端即认为在 n减去偏移量(指定子帧为多个时, 基站通知多个偏移量, 偏移量为非负的整数值) 所对应的子帧上进行指定 的干扰通道的干扰测量。 基站所指定的子帧均为包含 CSI-RS 或零功率 CSI-RS ( zeropowerCSI-RS ) 的子帧。
当然, 基站不指定所测量的子帧时, 终端将从 n子帧开始, 对 n子帧 及其之前的包含 CSI-RS或零功率 CSI-RS ( zeropowerCSI-RS ) 的子帧上的 导频位置进行指定的干扰通道干扰的测量, 得到第一干扰测量结果, 并根 据信道测量结果、 所述第一干扰测量结果、 其他干扰通道的干扰测量结果 以及噪声等, 计算出用于量化的 CSI信息的第一 CSI。
本发明中, CSI信息包括 RI、 PMI和 CQI参数中的一种或多种。
其中, zeropowerCSI-RS是小区为空为位置, 这些位置一般都是其他小 区 (干扰小区)在发送导频, 因此, 在这些位置上可以测到其他小区的干 扰信道信息。
本示例中, 终端还对基站指定的干扰通道之外的其他干扰源的其他干 扰通道的干扰进行测量。 只考虑其他干扰通道的干扰测量结果和噪声, 并 结合信道测量结果计算出用于量化的 CSI信息的第二 CSI。
终端将计算出的第一 CSI和第二 CSI在指定的上行子帧的数据信道上 进行反馈。
基站可以根据第一 CSI和第二 CSI,确定指定的干扰通道的干扰情况与 其他干扰通道的干扰情况对终端服务小区的干扰影响情况, 以确定是否关 闭一些干扰源来保证终端服务小区的业务质量。
实施例六
本实施例主要描述一种信道质量信息的反馈方法。
基站通过信令触发非周期的 CSI反馈,在 DCI Format中携带触发信息, 根据 DCI Format的位置和预先规定, 指定 UE在子帧 n上测量信道信息。
并且,基站通知 UE分别测量指定的子帧 m_l , m_2, m_p的干扰, 具体地, 在子帧 m_l , m_2, m_p上的全部或部分资源位置 RE资源集 合 REset_l , REset_2... , Reset_P测量第一干扰, 第二干扰, ..., 第 p干扰 的信息。 其中, 子帧 n根据基站触发信令的发送时刻来确定。
子帧 m_l , m_2, m_p可以由基站通过信令指定与子帧 m的偏置 offset确定, 如 m_l=n-offset_l , m_2=n-offset_2 , ... , m_p=n-offset_p , offset_l , offset_2... , offset_p为非负整数。
终端根据上述各指定子帧的第一干扰、 第二干扰 第 p干扰的信 息, 以及各指定子帧的噪声并结合各指定子帧的信道测量结果计算出用于 量化的 CSI信息, 并通知基站。
基站根据当前待调度子帧的干扰情况, 选定与前述指定子帧的 CSI相 同的情况, 从而确定终端的调制编码方式。
图 3为本发明实施例的干扰测量信令的通知装置的结构示意图,如图 3 所示, 本发明实施例的干扰测量信令的通知装置包括:
通知单元 30, 用于干扰测量的子帧集合或信道质量测量子帧集合中包 含的 M个子帧的信息通知终端。
上述通知单元 30进一步用于,将所述 M承载于高层信令或物理层信令 中, 通知所述终端。
上所述物理层信令与触发非周期信道状态信息 CSI上报的信令承载于 物理下行控制信道 ( PDCCH, Physical Downlink Control Channel )的同一个 Format内, 发送给所述终端。
本领域技术人员应当理解, 图 3 所示的干扰测量信令的通知装置是为 实现前述的干扰测量信令的通知方法而设计的, 图 3 所示的干扰测量信令 的通知装置中通知单元 30的功能可参照前述方法的描述而理解, 该处理单 元的功能可通过运行于处理器上的程序而实现, 也可通过具体的逻辑电路 而实现。
图 4为本发明实施例的干扰测量装置的结构示意图, 如图 4所示, 本 发明实施例的干扰测量装置包括接收单元 40、测量计算单元 41和反馈单元 42, 其中:
接收单元 40, 用于接收网络侧发送的干扰测量的子帧集合或信道质量 测量子帧集合信息的通知; 测量计算单元 41 , 用于对所述干扰测量的子帧集合或信道质量测量子 帧集合的各子帧进行干扰测量, 计算平均干扰值;
反馈单元 42, 用于根据所述平均干扰值确定 CQI信息, 并反馈给所述 基站。
在图 4所示的干扰测量装置的基础上, 本发明实施例的干扰测量装置 还包括:
调整单元(图 4中未示出), 位于基站中, 用于根据所述反馈单元反馈 的 CQI以及与所述干扰测量的子帧集合或信道质量测量子帧集合对应的时 段的调度信息, 对当前的调制编码方式进行调整。
本领域技术人员应当理解, 图 4所示的干扰测量装置是为实现前述的 干扰测量方法而设计的, 图 4所示的干扰测量装置中各处理单元的功能可 参照前述方法的描述而理解, 各处理单元的功能可通过运行于处理器上的 程序而实现, 也可通过具体的逻辑电路而实现。
图 5为本发明实施例的信道质量信息的反馈装置的结构示意图,如图 5 所示, 本发明实施例的信道质量信息的反馈装置包括测量单元 50、 第一确 定单元 51和反馈单元 52, 其中:
测量单元 50, 用于在基站指定子帧上进行干扰测量;
第一确定单元 51 , 用于根据所述测量单元的测量结果确定 CQI, 反馈单元 52, 用于将所述 CQI反馈给所述基站。
在图 5 所示的信道质量信息的反馈装置的基础上, 本发明实施例的信 道质量信息的反馈装置还包括接收单元(图 5 中未示出)和第二确定单元 (图 5中未示出), 其中,
接收单元, 用于所述基站发送的子帧偏移量指示, 或子帧号以及子帧 偏移量指示;
第二确定单元, 用于根据所述接收单元接收的所述基站发送的子帧偏 移量指示, 将所述指定子帧确定为当前子帧号与子帧偏移量之差所对应的 子帧;
或者, 用于根据所述接收单元接收的所述基站发送的子帧号以及子帧 偏移量指示, 将所述指定子帧确定为子帧号与子帧偏移量之差所对应的子 帧。
本领域技术人员应当理解, 图 5 所示的信道质量信息的反馈装置是为 实现前述的信道质量信息的反馈方法而设计的, 图 5 所示的信道质量信息 的反馈装置中各处理单元的功能可参照前述实施例六的描述而理解, 各处 理单元的功能可通过运行于处理器上的程序而实现, 也可通过具体的逻辑 电路而实现。
图 6为本发明实施例的信道质量信息的反馈装置的另一结构示意图, 如图 6所示, 本发明实施例的信道质量信息的反馈装置包括测量单元 60、 确定单元 61和反馈单元 62, 其中:
测量单元 60, 用于对对基站指定的子帧上的部分资源位置进行指定的 干扰通道测量; 以及, 排除指定的干扰通道上干扰, 测量来自其他干扰通 道的干扰;
确定单元 61 , 用于根据指定的子帧上的部分资源位置的干扰通道测量 测量结果以及其他干扰和噪声的测量结果用于确定第一 CQI; 排除指定的 干扰通道上干扰, 根据其他干扰通道的干扰的测量结果和噪声确定第二 CQI;
反馈单元 62, 用于将所述第一 CQI以及第二 CQI反馈给所述基站。 上述测量单元 60, 进一步用于利用指定帧或者指定帧之前的一个或多 个包含 CSI-RS或功率为零 CSI-RS的子帧上的导频位置进行干扰通道的干 扰测量, 以及, 测量所述指定的干扰通道干扰为零时其余干扰通道的干扰, 其中, 所述指定帧为所述基站触发测量信令的发送时刻所对应的子帧。 本领域技术人员应当理解, 图 6所示的信道质量信息的反馈装置是为 实现前述的信道质量信息的反馈方法而设计的, 图 6所示的信道质量信息 的反馈装置中各处理单元的功能可参照前述实施例五的描述而理解, 各处 理单元的功能可通过运行于处理器上的程序而实现, 也可通过具体的逻辑 电路而实现。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种干扰测量信令的通知方法, 其特征在于, 所述方法包括: 网络侧将干扰测量的子帧集合或信道质量测量子帧集合中包含的 M个 子帧的信息通知终端。
2、 根据权利要求 1所述的方法, 其特征在于, 所述将干扰测量的子帧 集合或信道质量测量子帧集合信息通知终端为:
所述网络侧将所述 M承载于高层信令或物理层信令中 ,通知所述终端。
3、 根据权利要求 2所述的方法, 其特征在于, 所述物理层信令与触发 非周期信道状态信息 CSI上报的信令承载于物理下行控制信道 PDCCH的同 一个 Format内, 发送给所述终端。
4、根据权利要求 1至 3中任一项所述的方法, 其特征在于, 所述 M为 干扰测量的子帧或信道质量测量子帧的连续数量。
5、 一种干扰测量方法, 其特征在于, 所述方法包括:
所述终端接收网络侧发送的干扰测量的子帧集合或信道质量测量子帧 集合信息的通知后, 对所述干扰测量的子帧集合或信道质量测量子帧集合 的各子帧进行干扰测量, 计算平均干扰值;
所述终端根据所述平均干扰值确定信道质量指示 CQI信息, 并反馈给 所述基站。
6、 根据权利要求 5所述的方法, 其特征在于, 所述干扰测量的子帧集 合或信道质量测量子帧集合信息为干扰测量的子帧或信道质量测量子帧的 数量信息。
7、 根据权利要求 6所述的方法, 其特征在于, 所述干扰测量的子帧或 信道质量测量子帧为连续的 M个子帧。
8、 根据权利要求 5至 7任一项所述的方法, 其特征在于, 所述方法还 包括:
所述基站根据所述终端反馈的 CQI以及与所述干扰测量的子帧集合或 信道质量测量子帧集合对应的时段的调度信息, 对当前的调制编码方式进 行调整。
9、 根据权利要求 8所述的方法, 其特征在于, 所述基站根据所述终端 反馈的 CQI以及与所述干扰测量的子帧集合或信道质量测量子帧集合对应 的时段的调度信息, 对当前的调制编码方式进行调整为:
所述基站根据所述终端反馈的 CQI以及干扰小区或干扰节点实际的数 据传输的子帧数量, 对当前的调制编码方式进行调整。
10、 一种信道质量信息的反馈方法, 其特征在于, 所述方法包括: 终端在基站指定的一个或多个子帧上进行干扰测量, 根据测量结果确 定 CQI , 将所述 CQI反馈给所述基站。
11、 根据权利要求 10所述的方法, 其特征在于, 所述方法还包括: 所述终端接收到所述基站发送的子帧偏移量指示, 将所述指定子帧确 定为信道测量的参考子帧号与子帧偏移量之差所对应的一个或多个子帧; 或者, 所述终端接收到所述基站发送的子帧号以及子帧偏移量指示, 将所述指定子帧确定为信道测量的参考子帧号与一个或多个子帧偏移量之 差所对应的子帧。
12、 根据权利要求 11所述的方法, 其特征在于, 所述方法还包括: 所述基站将所述子帧偏移量指示, 或子帧号以及子帧偏移量指示承载 于高层信令或物理层信令中, 通知所述终端。
13、 根据权利要求 12所述的方法, 其特征在于, 所述物理层信令与触 发非周期 CSI 上报的信令承载于物理下行控制信道 PDCCH 的同一个 Format内, 发送给所述终端。
14、 一种信道质量信息的反馈方法, 其特征在于, 所述方法包括: 终端对基站指定的子帧上的部分资源位置进行指定的干扰通道测量, 并将测量结果以及其他干扰和噪声的测量结果用于确定第一 CQI, 将所述 第一 CQI反馈给所述基站;
终端排除指定的干扰通道上干扰, 只考虑来自其他干扰通道的干扰和 噪声的测量结果确定第二 CQI, 并将第二 CQI反馈给基站。
15、 根据权利要求 14所述的方法, 其特征在于, 所述终端对基站指定 的干扰通道进行测量为:
所述终端利用指定帧或者指定帧之前的一个或多个包含 CSI-RS或功率 为零 CSI-RS的子帧上的导频位置进行干扰通道的干扰测量, 以及, 测量所 用于信道测量的参考子帧。
16、 一种干扰测量信令的通知装置, 其特征在于, 所述装置包括: 通知单元, 用于将干扰测量的子帧集合或信道质量测量子帧集合中包 含的 M个子帧的信息通知终端。
17、 根据权利要求 16所述的装置, 其特征在于, 所述通知单元进一步 用于, 将干扰测量的子帧集合或信道质量测量子帧集合中包含的 M个子帧 的信息承载于高层信令或物理层信令中, 通知所述终端。
18、 一种干扰测量装置, 其特征在于, 所述装置包括接收单元、 测量 计算单元和反馈单元, 其中:
接收单元, 用于接收网络侧发送的干扰测量的子帧集合或信道质量测 量子帧集合中包含的 M个子帧的信息的通知;
测量计算单元, 用于对所述 M个子帧中的各子帧进行干扰测量, 计算 平均干扰值;
反馈单元, 用于根据所述平均干扰值确定 CQI信息, 并反馈给所述基 站。
19、 根据权利要求 18所述的装置, 其特征在于, 所述装置还包括: 调整单元, 位于基站中, 用于根据所述反馈单元反馈的 CQI以及与所 述干扰测量的子帧集合或信道质量测量子帧集合对应的时段的调度信息, 对当前的调制编码方式进行调整。
20、 一种信道质量信息的反馈装置, 其特征在于, 所述装置包括测量 单元、 第一确定单元和反馈单元, 其中:
测量单元, 用于在基站指定子帧上进行干扰测量;
确定单元, 用于根据所述测量单元的测量结果确定 CQI;
反馈单元, 用于将所述 CQI反馈给所述基站。
21、 根据权利要求 20所述的装置, 其特征在于, 所述装置还包括接收 单元和第二确定单元, 其中,
接收单元, 用于所述基站发送的子帧偏移量指示, 或子帧号以及子帧 偏移量指示;
第二确定单元, 用于根据所述接收单元接收的所述基站发送的子帧偏 移量指示, 将所述指定子帧确定为当前子帧号与子帧偏移量之差所对应的 子帧;
或者, 用于根据所述接收单元接收的所述基站发送的子帧号以及子帧 偏移量指示, 将所述指定子帧确定为子帧号与子帧偏移量之差所对应的子 帧。
22、 一种信道质量信息的反馈装置, 其特征在于, 所述装置包括测量 单元、 确定单元和反馈单元, 其中:
测量单元, 用于对对基站指定的子帧上的部分资源位置进行指定的干 扰通道测量; 以及, 排除指定的干扰通道上干扰, 测量来自其他干扰通道 的干扰;
确定单元, 用于根据指定的子帧上的部分资源位置的干扰通道测量测 量结果以及其他干扰和噪声的测量结果用于确定第一 CQI; 排除指定的干 扰通道上干扰, 根据其他干扰通道的干扰的测量结果和噪声确定第二 CQI; 反馈单元, 用于将所述第一 CQI以及第二 CQI反馈给所述基站。
23、 根据权利要求 22所述的装置, 其特征在于, 所述测量单元, 进一 步用于利用指定帧或者指定帧之前的一个或多个包含 CSI-RS 或功率为零 CSI-RS的子帧上的导频位置进行干扰通道的干扰测量, 以及, 测量所述指 基站触发测量信令的发送时刻所对应的子帧。
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