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WO2012065578A1 - Procédé, appareil et système de rapport d'état de canal - Google Patents

Procédé, appareil et système de rapport d'état de canal Download PDF

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Publication number
WO2012065578A1
WO2012065578A1 PCT/CN2012/070310 CN2012070310W WO2012065578A1 WO 2012065578 A1 WO2012065578 A1 WO 2012065578A1 CN 2012070310 W CN2012070310 W CN 2012070310W WO 2012065578 A1 WO2012065578 A1 WO 2012065578A1
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WO
WIPO (PCT)
Prior art keywords
subframe
base station
channel state
type
period
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2012/070310
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English (en)
Chinese (zh)
Inventor
白伟
闫志宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2012065578A1 publication Critical patent/WO2012065578A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a method, device and system for reporting channel status. Background technique
  • a heterogeneous network means that a low power node (LPN) is placed in the coverage area of the macro base station to form a heterogeneous system of different node types covered by the same.
  • LPN low power node
  • the macro base station has a large transmit power. Therefore, the downlink signal of the macro base station may interfere with the downlink signal of the LPN in the edge position of the LPN coverage, and the high power terminal located at the edge position within the coverage of the macro base station may also The nearby LPN causes interference.
  • the home base station may also interfere with nearby users to receive downlink signals from the macro base station.
  • ABS Almost Blank Subframe
  • the ABS subframe is only allowed to transmit a cell-specific reference signal (CRS), or a CRS and a channel state information reference signal (CSI-RS), or a CRS and a CSI-RS.
  • CRS cell-specific reference signal
  • CSI-RS channel state information reference signal
  • the necessary common control channel, or CRS and the necessary common control channel so that the signal transmitted by the interfering base station in the AB S subframe is significantly reduced, thereby reducing the impact on other nodes.
  • the interference at the subframe position corresponding to each of the ABS subframe and the non-ABS normal subframe is different.
  • the quality of the downlink channel is also different.
  • other nodes can use the ABS configuration mechanism of the interfering base station to effectively schedule the interfered User Equipment (UE). Summary of the invention
  • An aspect of the present invention provides a method for reporting a channel status, including:
  • the UE receives the feedback period information sent by the first base station, where the feedback period information is used to indicate that the UE reports the period N of the channel state of the first type of subframe;
  • the UE measures a channel state of the first type of subframe
  • the UE reports the measured channel status to the first base station according to the period N.
  • the first type of subframe is a subframe that is the same as the second specific subframe in the first base station.
  • the second specific subframe is a subframe in which only a part of channels in all channels are transmitted, a subframe position of the second specific subframe is configured by a second base station, and the second base station is an interference base station of the first base station.
  • Another aspect of the present invention provides a method of receiving a channel state, including:
  • the first base station sends the feedback period information to the user equipment UE, where the feedback period information is used to indicate that the UE reports the period N of the channel state of the first type of subframe;
  • the first type of subframe is a subframe that is the same as the second specific subframe in the first base station
  • the second specific subframe is a subframe that only transmits a part of the channels in all the channels
  • the second The subframe position of the specific subframe is configured by the second base station, and the second base station is the interference base station of the first base station.
  • the terminal includes a transceiver unit and a processing unit;
  • the transceiver unit is configured to receive the feedback period information sent by the first base station, and report the measured channel status to the first base station according to the period N, where the feedback period information is used to indicate that the UE reports the first type of sub- a period N of the channel state of the frame;
  • the processing unit is configured to measure a channel state of the first type of subframe; wherein, the first type of subframe is a subframe in the first base station that is the same time as the second specific subframe
  • the second specific subframe is a subframe in which only a part of channels in all channels are transmitted, a subframe position of the second specific subframe is configured by a second base station, and the second base station is an interference base station of the first base station.
  • the network device includes a sending unit and a receiving unit, where the sending unit is configured to send the feedback period information to the UE, where the feedback period information is used to indicate that the UE reports the first type of sub- a period N of the channel state of the frame; the receiving unit is configured to receive a channel state of the first type of subframe reported by the UE according to the period N; where the first type of subframe is the first base station and the second specific a subframe in which the subframes are the same in time, the second specific subframe is a subframe in which only a part of channels in all channels are transmitted, and a subframe position of the second specific subframe is configured by a second base station, where the second base station is configured It is an interfering base station of the first base station.
  • Another aspect of the present invention provides a system including a first base station and a user equipment
  • the UE is configured to notify the UE to report the period N of the channel state of the first type of subframe, and the UE is configured to measure the channel state of the first type of subframe, and report the measured channel state according to the period N.
  • the first base station where the first type of subframe is a subframe that is the same as the second specific subframe in the first base station, and the second specific subframe is a subframe that only transmits a part of the channels of all the channels.
  • the subframe position of the second specific subframe is configured by the second base station, and the second base station is the interference base station of the first base station.
  • the first base station may perform effective scheduling for the UE according to the received channel state. For example, if the channel quality of the first type of subframe is good, the first base station may be followed by The subframe position of the type subframe sufficiently schedules the UE to improve the communication quality of the UE.
  • FIG. 1 is a schematic diagram of a subframe position of a measured channel state according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a subframe position of a measured channel state according to another embodiment of the present invention
  • FIG. 3 is a flowchart of a method according to another embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a terminal according to another embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a network device according to another embodiment of the present invention. detailed description
  • An embodiment of the present invention provides a system including a first base station and a UE.
  • the first base station notifies the UE to report the period of the channel state of the first type of subframe (hereinafter referred to as the reporting period) N. After measuring the channel state of the first type of subframe, the UE reports the measured channel state according to the period N.
  • First base station The channel state is a downlink channel state.
  • the UE reports the measured channel status to the first base station by transmitting channel state information indicating the measured channel state.
  • the first type of subframe in this embodiment is the same subframe in the first base station and the second specific subframe, that is, the subframe position of the first type of subframe belongs to the subframe position of the second specific subframe.
  • the set of subframe locations ie, the set of subframe locations of the first type of subframe may be a full set or subset of the set of subframe locations of the second particular subframe.
  • the first type of subframe does not need to define a subframe type, that is, the first type of sub-frame
  • the frame may be a normal subframe of a non-ABS type.
  • the second specific subframe is a subframe that allows only a part of channels in all channels to be transmitted, and is configured by the second base station.
  • the second specific subframe described above may be used to reduce interference to other nodes, such as a subframe of the ABS type.
  • the second base station in this embodiment is the interfering base station of the first base station, that is, the downlink signal of the second base station causes interference to the downlink signal sent by the first base station by the UE served by the first base station (for example, the signal interference degree is greater than a preset value) .
  • the first base station is an LPN and the second base station is a macro base station.
  • the first base station is a macro base station, and the second base station is a home base station.
  • the first base station sends feedback period information to the UE, and the feedback period information is used to indicate the reporting period N of the UE.
  • the reporting period N of the UE and the sending period of the second specific subframe configured by the second base station For example, the reporting period N of the UE and the sending period of the second specific subframe configured by the second base station
  • N2 is the same, or an integer multiple of N2.
  • the first base station may configure N1 to be 4 ms, 8 ms, 16 ms, or 20 ms, respectively, and notify the UE.
  • the first base station may first obtain the sending period N2 of the second specific subframe from the second base station or other device, and then configure the reporting period N of the UE to be the same period as N2, or N2. Integer multiple and notify the UE.
  • the UE may use a position offset from the fixed one subframe (such as any one of subframe 0 to subframe 9) as the subframe position of the reporting channel state.
  • the offset offset may be pre-assigned by the UE and the first base station, or may be a default value saved by the UE, or received by the UE from the first base station.
  • the offset is any integer from 0 to N-1.
  • the first base station may send a parameter I CS ⁇ UE, and the I CSI has a mapping relationship with the period N and the offset offset.
  • the UE may determine N and offset according to the obtained or saved parameter I CSI and N, offset mapping relationship, and the received parameter I CSI .
  • Table 1 provides a mapping of parameters 1 081 and N, offset for FDD systems. Shooting relationship.
  • the offset indicates the offset value of the subframe position of the channel state reported in each period N with respect to the subframe 0, and therefore the offset has the same value as the index of the subframe.
  • the period N that can be configured for one UE is ⁇ 2, 5, 10, 20, 40, 80, 160, 32, 64, 128, 4, 8, 16 Any of the ⁇ (cycles are in ms) or
  • the offset of N1 in each period is any one of ⁇ 0, N-1 ⁇ .
  • the subframe position at which the UE reports the channel state is n.
  • the subframe position of the first type of subframe (that is, the subframe that the UE needs to measure) may be n-x, where X is pre-assigned by the UE and the first base station, or is saved by the UE, X
  • the value may be such that the time of the first type of subframe to be measured by the UE is the same as the time of the second specific subframe configured by the second base station, for example, the value of X is 4 ms.
  • the UE receives the subframe position of the first type of subframe (that is, the subframe that the UE needs to measure).
  • the first base station sends the set of subframe positions of the second specific subframe to The UE, that is, the set of subframe positions of the first type of subframe received by the UE is the same as the subframe position set of the second specific subframe.
  • the second base station selects a part of the subframe position from the configured subframe position set of the second specific subframe, and sends the partial subframe position set to the first base station, and then sends the first base station. Give the UE.
  • the second base station sends the configured subframe position set of the second specific subframe to the first base station, and the first base station selects a part of the subframe position from the set of subframe positions of the second specific subframe, and The selected partial subframe position is sent to the UE.
  • the set of subframe positions of the first type of subframe received by the UE may be a subset of the subframe position set of the second specific subframe.
  • the UE determines a subframe position of the reference subframe according to the subframe position of the reporting channel state, for example, determining a subframe position of the reference subframe as n ⁇ n refl ; where n refl is a reference subframe capable of The subframe position belongs to the value of the location set of the first type of subframe, and is greater than or equal to the minimum value of the parameter U.
  • the parameter U may be 4.
  • the UE may also determine the first type of subframe according to the subframe position of the reporting channel state and the n ref2
  • the subframe position for example, the subframe position of the first type of subframe is n - n ref2 - m * N, where m is an integer.
  • the UE may also use n - n ref2 as the subframe position of the reference subframe, that is, the first base station indicates to the UE by using n ref2 that the subframe position of the reporting channel state is offset from the subframe position of the reference subframe. .
  • the channel state reported by the UE may be that the UE averages the channel state of the first type of subframes one or more times before the subframe position n, that is, the channel state information that the UE sends to the first base station. It may indicate the channel status of the UE-second measurement, and may also indicate the average channel state average obtained by the UE.
  • the channel state information takes 1 to K (K is the number of defined channel state information indicating values) that satisfies the first determining condition. Maximum value; no Then, the channel state information is taken as 0.
  • the first determining condition includes: a physical downlink shared channel determined by the modulation mode indicated by the channel state information and the transport block size (Physical
  • the data transmission block on the Downlink Shared Channel, PDSCH is transmitted at the subframe position of the reference subframe, and the error block probability of the data transmission block is less than a preset threshold. Further, the UE transmits channel state information to the first base station at the subframe position n.
  • the UE may measure the first type of subframe and report the channel status corresponding to the first type of subframe to the first base station. Since the subframe position of the first type subframe is the same as the subframe position of the second specific subframe, the first base station can perform effective scheduling for the UE according to the received channel state, for example, if the channel quality of the first type subframe Preferably, the UE can be fully scheduled in the subframe position of the subsequent first type of subframe to improve the communication quality of the UE.
  • the information sent by the first base station to the UE in this embodiment may be carried in a message to reduce signaling overhead, or may be carried in different messages to increase communication flexibility.
  • the ABS transmission period configured by the macro base station is 8 ms
  • the subframe 0, the subframe 8, the subframe 16 and the like are ABS subframes, except that the subframe position is 8 *
  • the other subframes other than m (m is an integer) may be ordinary subframes of a non-ABS type, and the macro base station may normally transmit signals in a normal subframe without being restricted by the channel type.
  • UE1 and UE2 need to measure the channel state of the subframe position to be 8*m.
  • the period in which the channel state is reported by UE1 and UE2 is the same as the ABS transmission period configured by the second base station, which is 8 ms.
  • the subframe position in which the UE1 reports the channel state is 8 * m + 4 (that is, the offset of UE1 is 4), and the subframe position in which the UE2 reports the channel state is 8 * m + 5 (that is, the offset of UE1 is 5).
  • UE3 and UE4 need to measure the channel state of the subframe position to be 16*m.
  • the period in which the channel state is reported by UE3 and UE4 is twice the ABS transmission period configured by the second base station, which is 16 ms.
  • the subframe position of the UE3 reporting channel state is 16 * m + 4 (that is, the offset of UE3 is 4), and the subframe position of the channel state of UE4 is 16 * m + 2 (that is, the offset of UE4 is 2).
  • Another embodiment of the present invention provides a method for reporting a channel state.
  • the embodiment uses an interfering base station where the macro base station is an LPN as an example to describe a process of reporting a channel state by a UE of the LPN service. It is assumed that the ABS transmission period configured by the macro base station is 8 ms, and the subframe 0, the subframe 8, the subframe 16 and the like are ABS subframes. As shown in FIG. 3, this embodiment includes the following steps.
  • the UE determines a subframe position n11 that reports a channel state of the first type of subframe.
  • the UE acquires a period N11 of the channel state reported by the UE to the first type of subframe.
  • the UE receives the feedback period information sent by the LNP, and the feedback period information is used to indicate that the UE reports the period of the channel state of the first type of subframe, that is, the reporting period N11.
  • the offset may be pre-agreed by the UE and the LPN or may be saved by the UE or may be sent by the LPN to the UE. Therefore, the message including the Nil received by the UE may further include the offset information, or the UE may also receive the message including the offset information before or after receiving the message including the Nil.
  • the LPN may also not send the offset to the UE.
  • the UE may default to an offset of 0.
  • the UE receives the parameter I CSI sent by the first base station, and the UE may determine the period Nil and the offset according to the mapping relationship between the I CSI and the period N11 and the offset, so as to determine the subframe in which the channel state of the first type of subframe is reported. Location nll.
  • mapping relationship between the I CSI and the period N11 and offset refer to the foregoing embodiments, and details are not described herein again.
  • the UE determines a subframe position of the subframe to be measured (that is, the first type of subframe).
  • the UE determines the subframe position of the first type of subframe to be the subframe position of the subframe to be measured.
  • the location set of the subframe position of the first type of subframe transmitted by the LPN to the UE1 is ⁇ 0, 8, 16, 32, ... ⁇ , and the UE1 can be in each cycle (for 8 ms).
  • the channel status is reported once, and each subframe can be measured before each reporting channel state, which is the measurement subframe 0 in the first 8 ms period, the measurement subframe 8 in the second 8 ms period, and the third Subframe 16 and so on are measured during the 8ms period and so on.
  • the location set of the subframe position of the first type of subframe that the LPN sends to the UE3 is ⁇ 0, 8, 16, 32, ... ⁇ , and the UE3 can be in each period (for 16 ms).
  • the channel status is reported once, and there may be one measurement or multiple measurements before each reporting of the channel status.
  • measuring subframe 0 in the first 16 ms period, measuring subframe 16 in the second 16 ms period, measuring subframe 32 in the third 16 ms period, and so on, and correspondingly, UE3 is in the third
  • the channel state information reported by the 16ms may indicate the channel state measured by the subframe measured by the UE3 within the 16ms (ie, the subframe 32), and may also indicate the subframe measured by the UE3 within the previous 16ms (ie, the subframe 16).
  • the average of the obtained channel states measured by the subframes measured within the 16ms ie, the subframe 32
  • the UE acquiring the subframe position of the first type of subframe from the LPN does not have an inevitable sequence with S310 and S320.
  • the subframe position of the first type of subframe may be nil -xm *N11, where x is pre-agreed by the UE and the LPN.
  • the value of X may be such that the determined time of the first type of subframe is the same as the time of a second specific subframe configured by the macro base station, and m is an integer.
  • the X of the UE1 and the LPN is 4, and the subframe position of the first type of subframe measured by the UE1 is ⁇ 0, 8, 12... ⁇ , and it can be seen that the first type measured by the UE1 is The subframe position of the frame is actually the same as the subframe position in the location set of the ABS subframe configured by the macro base station.
  • the X of the UE3 and the LPN is 4, and the subframe position of the first type of subframe measured by the UE1 is ⁇ 0. 16 , 32... ⁇ , it can be seen that the set of subframe positions of the first type of subframes measured by UE3 is actually a subset of the set of locations of ABS subframes configured with the macro base station.
  • the UE determines a subframe position of the reference subframe.
  • the UE measures the channel state of the first type of subframe, and reports the channel state information corresponding to the first type of subframe to the LPN in the determined subframe position ni l.
  • the UE reports the measured channel state of the first type of subframe according to the period Ni1 and the determined subframe position ni l. If the channel state of the first type of subframe measured by the UE satisfies the first determining condition, the channel state information sent by the UE to the LPN takes 1 to K (K is the number of defined channel state information indicating values) to satisfy the first Determine the maximum value of the condition; otherwise, the UE sends the LPN channel status information to 0.
  • the first determining condition includes: if the modulation mode indicated by the channel state information and the data transmission block on the PDSCH determined by the transmission block size are transmitted on the subframe position of the reference subframe, the error block probability of the data transmission block is less than a preset. Threshold (eg 1%).
  • the UE may determine the subframe position of the channel state of the first type of subframe, and after measuring the first type of subframe, report the channel state to the first base station at the reporting position. Since the subframe position of the first type of subframe belongs to the subframe position set of the second specific subframe, the first base station can perform effective scheduling for the UE according to the received channel state.
  • the UE in the prior art does not have the type of the molecular frame in the measurement reporting process, and the period in which the measurement result is reported may be different from the transmission period of the second specific subframe.
  • the period in which the UE reports the measurement result is 5, the subframe.
  • the offset is 1, that is, the position where the UE reports the measurement result is ⁇ 1, 6 . 11, 16, ... ⁇ , if the subframe position of the ABS subframe measured by the UE is ⁇ 0, 8, 16, ... ⁇ ,
  • the measurement result of the UE to the subframe 8 must be buffered to the subframe 16 to be reported. This is because the UE in the prior art has to report the measurement result after at least 4 subframes after the measurement. Therefore, the UE can only report the subframe before the subframe 7 in the subframe 11 after the subframe 8 is measured. The result of the measurement is made, and the measurement result of the subframe 8 cannot be reported. Therefore, the UE reports the measurement result up to the subframe 0 twice in the subframe 6 and the subframe 11, respectively, resulting in waste of air interface resources. In this embodiment, the UE reports the channel state according to the same or multiple times of the transmission period of the second specific subframe. Therefore, the waste of the air interface resource and the implementation complexity of the UE side can be avoided.
  • Another embodiment of the present invention provides a method for reporting a channel state.
  • the embodiment uses an interfering base station whose macro base station is an LPN as an example to describe a process of reporting channel state information by a UE of the LPN service. It is assumed that the ABS transmission period configured by the macro base station is 8 ms, and the subframe 0, the subframe 8, the subframe 16 and the like are ABS subframes. As shown in FIG. 4, this embodiment includes the following steps.
  • the UE determines a subframe position n11 that reports a channel state of the first type of subframe.
  • This step is the same as S310 in the foregoing embodiment, and details are not described herein again.
  • the UE receives n ref2 sent by the first base station.
  • the first base station indicates, by the n ref2 , the offset of the subframe position of the reporting channel state relative to the subframe position of the reference subframe by using the ref2 .
  • the UE can use nn ref2 as the subframe position of the reference subframe.
  • the UE determines a subframe position of the subframe to be measured (that is, the first type of subframe) according to the subframe position nil and the n ref2 that report the channel state.
  • the subframe position of the first type of subframe is nn ref2 -m*N, where m is an integer.
  • the UE measures a channel state of the first type of subframe, and determines a subframe position nil.
  • the channel state information corresponding to the first type of subframe is reported to the LPN.
  • This step is the same as S340 in the above embodiment, and details are not described herein again.
  • the UE may determine the subframe position of the channel state of the first type of subframe, and after measuring the first type of subframe, report the channel state to the first base station at the reporting position. Since the subframe position of the first type of subframe belongs to the subframe position set of the second specific subframe, the first base station can perform effective scheduling for the UE according to the received channel state.
  • the UE in the prior art may receive the period and the offset of the measurement result, and determine the subframe position of the measurement result according to the period and the offset of the reported measurement result, but the UE cannot receive the subframe to be measured.
  • the channel quality must be measured in a plurality of subframes before the subframe position, and then the measurement result is reported at the determined subframe position. This results in that the multiple subframes measured by the UE are not necessarily true subframes to be measured. For example, the UE of the prior art cannot perform targeted measurement on the subframe position of the ABS subframe.
  • the UE may determine the subframe position of the subframe to be measured, for example, distinguish the ABS subframe from the subframe position of the normal subframe, so that the UE performs targeted at the subframe position of the second specific subframe.
  • the measurement is reported to the first base station in time.
  • the terminal includes a transceiver unit 510 and a processing unit 520.
  • the transceiver unit 510 is configured to receive the feedback period information sent by the first base station, where the feedback period information is used to indicate that the UE reports the period N of the channel state of the first type of subframe, and the processing unit 520 is configured to measure the first type of the subframe. Channel state;
  • the unit 510 is further configured to report the measured channel status to the first base station according to the period N.
  • the first type of subframe is a subframe that is the same as the second specific subframe in the first base station
  • the second specific subframe is a subframe that only transmits a part of channels in all channels, and the second specific subframe is used.
  • the subframe position is configured by the second base station, and the second base station is the interference base station of the first base station.
  • the foregoing N is the same as the transmission period of the second specific subframe, or is an integer multiple of the transmission period of the second specific subframe.
  • N is 4 milliseconds; or, when the sending period of the second specific subframe is 8 milliseconds, N is 8 milliseconds; or, the second specific When the transmission period of the subframe is 16 milliseconds, N is 16 milliseconds.
  • the transceiver unit 510 is configured to report the channel status to the first base station in the determined subframe position that reports the channel status, where the determined subframe position for reporting the channel status is that the UE is according to the foregoing period.
  • the offset is an offset of a subframe position for reporting the channel state with respect to a preset subframe position.
  • the offset is indicated by the offset information received by the UE from the first base station, or is a preset value.
  • the foregoing first type of subframe is a subframe in the first base station that is the same as the second specific subframe.
  • the subframe position of the first type of subframe belongs to a subframe position of the second specific subframe. set.
  • the subframe position of the first type of subframe may be received by the transceiver unit 510 from the first base station; or the subframe position of the first type of subframe is determined by the processing unit 520 according to the subframe position of the reported channel state.
  • the difference between the preset parameters X is determined.
  • the processing unit 520 is further configured to determine a subframe position of the reference subframe as: n - n refl ; where n is a subframe position at which the UE reports the channel state, and n refl is a subframe position of the reference subframe.
  • the value of the set of subframe positions belonging to the first type of subframe is greater than or equal to the minimum of the parameter U Value, the above parameter u is a positive integer.
  • the processing unit 520 is further configured to determine that the subframe position of the first type of subframe is n - n re f2 - m * N, where n is a subframe position in which the UE reports a channel state, and n ref2 is the transceiver unit 510.
  • the parameter received from the first base station is either a preset value, and m is an integer.
  • n ref2 is used to indicate that the transceiver unit 510 reports the offset of the subframe position of the channel state with respect to the subframe position of the reference subframe, and the processing unit 520 is further configured to determine the subframe position of the reference subframe as n - n ref2 ⁇
  • the processing unit 520 is further configured to determine, according to the first determining condition, the transceiver unit 510 is configured to send channel state information to the first base station according to the determination result provided by the processing unit 520.
  • the first determining condition includes And: if the modulation mode indicated by the channel state information and the data transmission block on the PDSCH determined by the transmission block size are transmitted on the subframe position of the reference subframe, the error block probability of the data transmission block is less than a preset threshold. If the processing unit 520 measures The channel state to be satisfied satisfies the first determination condition, and the channel state information is the largest value satisfying the first determination condition in 1 to K; otherwise, the channel state information is 0.
  • the terminal provided by this embodiment may be used to implement all the steps implemented by the UE in the method and system provided by other embodiments of the present invention.
  • the transceiver unit 510 may be configured to perform steps related to information transmission and reception, and the processing unit 520. It can be used to perform other steps, such as measurement, determination, judgment, etc., and will not be described here.
  • the terminal may further include a storage unit for storing various preset values and the like in the methods and systems provided by other embodiments of the present invention.
  • the terminal in this embodiment may determine a subframe position in which the channel state of the first type of subframe is reported, and after measuring the first type of subframe, report the channel state to the first base station at the reported position. Since the subframe position of the first type of subframe belongs to the subframe position set of the second specific subframe, the first base station can perform effective scheduling for the terminal according to the received channel state.
  • Another embodiment of the present invention provides a network device, which may be a base station, or other access network devices that schedule UEs.
  • the network device package The transmitting unit 610 and the receiving unit 620 are included.
  • the sending unit 610 is configured to send the feedback period information to the UE, where the feedback period information is used to indicate that the UE reports the period N of the channel state of the first type of subframe.
  • the receiving unit 620 is configured to receive the report that the UE reports according to the period N. The channel state of the first type of subframe.
  • the first type of subframe is a subframe that is the same as the second specific subframe in the first base station
  • the second specific subframe is a subframe that only transmits a part of channels in all channels, and the second specific subframe is used.
  • the subframe position is configured by the second base station, and the second base station is the interference base station of the first base station.
  • the foregoing N is the same as the transmission period of the second specific subframe, or is an integer multiple of the transmission period of the second specific subframe.
  • ⁇ is 4 milliseconds; or, when the sending period of the second specific subframe is 8 milliseconds, ⁇ is 8 milliseconds; or, the second specific When the transmission period of the subframe is 16 milliseconds, ⁇ is 16 milliseconds.
  • the sending unit 610 is further configured to send the offset information to the UE, where the offset information is used to indicate that the UE reports the offset of the subframe position of the channel state with respect to the preset subframe position.
  • the first type of subframe in the embodiment is a subframe that is the same as the second specific subframe in the first base station: the subframe position of the first type subframe belongs to the second specific subframe.
  • the sending unit 610 is further configured to send the subframe position of the foregoing first type of subframe to the UE.
  • the sending unit 610 is further configured to send the parameter n ref2 to the UE, where the UE determines the subframe position of the first type of subframe according to the parameter n ref2 ; the receiving unit 620 is specifically configured to receive the channel state information sent by the UE.
  • the channel state information indicates the channel state of the first type of subframe of the UE.
  • the foregoing n ref2 indicates that the subframe position of the UE reporting the channel status is relative to The offset of the subframe position of the reference subframe.
  • the network device provided by this embodiment may be used to implement all the steps implemented by the first base station in the method and system provided by other embodiments of the present invention.
  • the sending unit 610 may be configured to perform steps related to information transmission, and the receiving unit.
  • the 620 can be used to perform steps related to information reception, and details are not described herein again.
  • the network may further comprise a processing unit for performing other steps, such as selecting a first type of subframe or the like.
  • the network device in this embodiment can receive the channel state of the first type of subframe reported by the UE, so that the UE can perform effective scheduling according to the received channel state.

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

Abstract

L'invention porte sur un procédé, un appareil et un système de rapport d'état de canal. Le procédé comprend les opérations suivantes : un UE reçoit les informations de cycle de rétroaction envoyées par une première station de base, les informations de cycle de rétroaction indiquant à l'UE de rapporter le cycle N de l'état de canal d'une sous-trame d'un premier type ; l'UE mesure l'état de canal de la sous-trame du premier type ; et l'UE rapporte l'état de canal mesuré à la première station de base conformément au cycle N. La sous-trame du premier type est une sous-trame dans la première station de base qui est temporellement la même qu'une seconde sous-trame spécifique, la seconde sous-trame spécifique est une sous-trame qui envoie seulement une partie de tous les canaux, la position de sous-trame de la seconde sous-trame spécifique est configurée par une seconde station de base, et la seconde station de base est une station de base brouilleuse de la première station de base. Le procédé réalise la planification efficace de l'UE pour la première station de base.
PCT/CN2012/070310 2010-11-15 2012-01-13 Procédé, appareil et système de rapport d'état de canal Ceased WO2012065578A1 (fr)

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CN106559807B (zh) * 2015-09-25 2021-08-20 华为技术有限公司 一种数据传输方法以及相关设备
CN106559817B (zh) * 2015-09-29 2021-02-19 中兴通讯股份有限公司 小区干扰检测方法及装置
WO2018058553A1 (fr) 2016-09-30 2018-04-05 华为技术有限公司 Procédé et appareil de communication d'informations
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