WO2018228572A1 - 信道质量反馈方法及装置 - Google Patents
信道质量反馈方法及装置 Download PDFInfo
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- WO2018228572A1 WO2018228572A1 PCT/CN2018/091681 CN2018091681W WO2018228572A1 WO 2018228572 A1 WO2018228572 A1 WO 2018228572A1 CN 2018091681 W CN2018091681 W CN 2018091681W WO 2018228572 A1 WO2018228572 A1 WO 2018228572A1
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- channel quality
- value
- bler
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- code rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
Definitions
- the present application relates to the field of communications technologies, and in particular, to a channel quality feedback method and apparatus.
- URLLC Ultra-Reliable and Low-Latency Communications
- Channel Quality Indicator is a typical feedback technique for channel quality information.
- each CQI index value corresponds to a modulation coding strategy under a specific channel quality, and after the network device learns the CQI index value corresponding to the current channel quality, the modulation code corresponding to the CQI index value may be adopted.
- the policy is transmitted.
- the feedback of the CQI index value in the industry includes two methods: absolute indication value feedback and differential indication value feedback.
- the absolute indication value feedback is that after the terminal device measures the current channel quality, a feedback information is fed back, and the feedback information corresponds to the CQI index value corresponding to the current channel quality.
- a kind of feedback information corresponds to an index value of a CQI.
- the index value of the CQI includes 16 types, feedback information of 4 bits is needed for feedback.
- the type of the CQI index value is usually limited, and only reflects the typical channel quality. For deep fading channels, the channel quality cannot be accurately reflected.
- the differential indication value feedback is to first determine a reference index value of a CQI, and then the index values of other CQIs are calculated based on the reference index value, and the offset information is calculated by the terminal device to feed back the offset information corresponding to the offset. .
- the terminal device can feed back the four offsets with two bits of feedback information.
- the CQI differential indication value set is uniformly defined in the industry. For example, when the offset is 2, the feedback information fed back by the terminal device is 11, and when the offset is 5, the feedback information fed back by the terminal device is still 11, the terminal device The current channel quality of the channel cannot be indicated more accurately.
- the channel quality of each terminal cannot be accurately indicated regardless of whether the absolute indication value or the differential indication value is used.
- the embodiment of the present invention provides a channel quality feedback method and device, which can determine a channel quality indicator set that is specific to a terminal device, which not only saves overhead, but also improves the accuracy of channel quality feedback as much as possible.
- the embodiment of the present application provides a channel quality feedback manner, where the network device determines a channel quality indicator set of the terminal device, where the channel quality indicator set includes a channel quality indicator value, and the channel quality indicator value is used to indicate channel quality.
- the channel quality indicator set may include at least one channel quality indicator value.
- the network device transmits the determined channel quality indication set to the terminal device.
- the network device may be configured by the high-level signaling configuration to indicate the channel quality indicator set, or the network device may also indicate the channel quality indicator set by using MAC CE signaling. Further, the channel quality indicator set may also be a user. Exclusive signaling instructions.
- the network device sends an indication message to the terminal device to indicate the channel quality indicator set, and the indication message includes the at least one channel quality indicator value.
- the channel quality indicator value may include a differential indicator value of the channel quality, and the differential indicator value of the channel quality is used to indicate an offset between the measured value of the channel quality and the reference value of the channel quality.
- the measured value of the channel quality is the index value of the measured CQI
- the reference value of the channel quality is the index value of the reference CQI.
- the channel quality here includes but is not limited to CQI, MCS and BLER.
- the reference value of the channel quality includes the value of the channel quality of the aperiodic feedback that is closest to the reference time corresponding to the measured value;
- the reference time corresponding to the measured value includes the reference measurement time corresponding to the measured value or the measurement reporting time corresponding to the measured value; the measurement reporting time corresponding to the measured value is the time at which the terminal device sends the feedback information for the measured value, and the feedback information is the terminal device.
- the information of the channel quality indication set feedback channel quality refer to the preset time interval before the measurement time is measured.
- the network device determines, for the terminal device, a first channel quality indicator set and a second channel quality indicator set, where the first channel quality indicator set corresponds to the interval of the first time interval, and the second channel quality indicator set corresponds to the The interval of two time intervals.
- the interval of the interval of the first time interval and the interval of the second time interval may be an interval of any two of the time intervals of the plurality of time intervals determined by the network device for the terminal device, and the intervals of the multiple time intervals are not between each other.
- the network device sends a plurality of channel quality indicator sets corresponding to the determined intervals of the plurality of time intervals to the terminal device.
- the network device receives the feedback information sent by the terminal device, where the feedback information is used to indicate a target differential indication value in the first target channel quality indicator set, where the first target channel quality indicator set is a measured value a channel quality indicator set corresponding to a time difference between a reference time and a reference time corresponding to the reference value, where the target difference indicator value is used to indicate an offset between a current measured value of the channel quality and a reference value of the channel quality,
- a target channel quality indicator set is a first channel quality indicator set or a second channel quality indicator set.
- the network device determines, for the terminal device, a third channel quality indicator set and a fourth channel quality indicator set, where the third channel quality indicator set corresponds to a third block error rate difference interval, and the fourth channel quality indicator The interval corresponding to the fourth error block rate difference is set.
- the network device receives feedback information sent by the terminal device, where the feedback information is used to indicate a target differential indication value in the second target channel quality indicator set, where the second target channel quality indicator set is a channel quality indicator set corresponding to a difference between a block error rate corresponding to the measured value and a block error rate corresponding to the reference value, where the target difference indicator value is used to indicate a current measured value of the channel quality and a reference value of the channel quality.
- the offset between the second target channel quality indicator sets is a third channel quality indicator set or a fourth channel quality indicator set.
- the channel quality indicator value in the channel quality indicator set includes an absolute indicator value of the channel quality, the absolute indicator value being used to represent a measure of channel quality.
- the absolute indicator value is an index value of the CQI.
- the channel quality indicator set determined by the network device for the terminal device is a subset or a complete set of the preset set; the preset set may be a set specified by the protocol, that is, a preset set in the network device and the terminal device.
- the preset indicator includes the number of absolute indication values greater than or equal to the number of absolute indication values included in the channel quality indicator set determined by the network device for the terminal device.
- the number of absolute indication values included in the channel quality indication set determined by the network device for the terminal device determines the number of bits required by the terminal device to send feedback information to the network device. For example, if the number of absolute indication values included in the channel quality indication set determined by the network device for the terminal device is 16, the number of bits required for the feedback information is 4.
- the number of bits of the limited feedback information can be used to feed back the absolute indication value included in the channel quality indicator set of the terminal device, and the feedback is more accurate.
- the number of absolute indication values included in the channel quality indication set determined by the network device for different terminal devices may be different, and the number of bits required by the terminal device to send feedback information to the network device may also be different.
- the absolute indication value included in the channel quality indicator set determined by the network device for the terminal device may be continuously selected from the preset set, or may be non-continuously selected. If the absolute indicator value included in the channel quality indicator set may be consecutively selected, or the absolute indicator value included in the channel quality indicator set is a value extracted at equal intervals, when the network device indicates the channel quality indicator set to the terminal device, The number of elements included in the start element and the track quality indicator set of the channel quality indicator set may be indicated only, or the network device only indicates the start element, and the number of elements included in the track quality indicator set is a protocol agreement. Value. It should be noted that the meaning of continuous selection herein may be selected one by one according to the number size of the absolute indication value.
- the bitmap may be used in the form of a bitmap.
- the terminal device performs an indication or the network device respectively indicates the sequence number corresponding to the absolute indication value in the preset set.
- the absolute indication value included in the channel quality indicator set determined by the network device for the terminal device is part or all of the channel quality indicator values in the at least one of the plurality of preset sets.
- at least two of the plurality of preset sets have different numbers of absolute indication values.
- the preset set may be a preset set in the network device and the terminal device.
- the embodiment of the present application provides a network device, where the network device has a function of implementing network device behavior in the method in the first aspect.
- the functions may be implemented by hardware or by corresponding software implemented by hardware.
- the hardware or software includes one or more modules corresponding to the functions described above.
- the network device includes a processing unit and a transceiver unit, where the processing unit is configured to determine a channel quality indicator set of the terminal device, where the channel quality indicator set includes at least one channel quality indicator value, The channel quality indicator value is used to indicate channel quality, and the transceiver unit is configured to send the channel quality indicator set to the terminal device.
- the network device includes a processor and a transceiver, where the processor is configured to determine a channel quality indicator set of the terminal device, where the channel quality indicator set includes at least one channel quality indicator value, The channel quality indicator is used to indicate channel quality, and the transceiver is configured to send the channel quality indicator set to the terminal device.
- the principle and the beneficial effects of the network device for solving the problem can be referred to the method and the beneficial effects of the first aspect.
- the network device refer to the network device side method of the first aspect. The implementation, repetitions will not be repeated.
- the embodiment of the present application provides a channel quality feedback method, including: acquiring, by a terminal device, a channel quality indicator set determined by the network device for the terminal device, where the channel quality indicator set includes at least one channel quality indicator value, where The channel quality indicator value is used to indicate channel quality.
- the terminal device sends feedback information to the network device, where the feedback information is used to indicate a target channel quality indicator value, and the target channel quality indicator value is a channel quality indicator value in the channel quality indicator set, where the target channel quality indicator value is used. Determine the current channel quality of the channel.
- the channel quality indicator value includes a differential indication value of channel quality, the difference indication value being used to indicate an offset between a measured value of channel quality and a reference value of channel quality.
- the reference values of the channel quality include:
- the terminal device acquires a channel quality indication set determined by the network device for the terminal device, including:
- the terminal device acquires a first channel quality indicator set and a second channel quality indicator set, where the first channel quality indicator set corresponds to a first time interval interval, and the second channel quality indicator set corresponds to a second time interval interval.
- the first time interval and the second time interval are time differences between a reference time corresponding to the measured value and a reference time corresponding to the reference value, and the interval of the first time interval and the second time interval The interval of the time interval is different;
- the terminal device sends feedback information to the network device, including:
- a first target difference set Determining, by the terminal device, a first target difference set, where the first target difference set is a channel corresponding to a time difference between a measurement time corresponding to the measured value of the channel quality and a feedback time corresponding to the reference value of the channel quality a quality indicator set, where the first target difference set is the first channel quality indicator set or the second channel quality indicator set;
- the terminal device sends feedback information to the network device for indicating a target differential indication value in the first target difference set.
- the terminal device acquires a channel quality indication set determined by the network device for the terminal device, including:
- the terminal device acquires a third channel quality indicator set and a fourth channel quality indicator set, where the third channel quality indicator set corresponds to a third block error rate difference interval, and the fourth channel quality indicator set corresponds to a fourth error block a section of the rate difference, the third block error rate difference and the fourth block error rate difference being between a block error rate corresponding to the channel quality measurement value and a block error rate corresponding to the channel quality reference value
- the difference between the third block error rate difference and the fourth block error rate difference is different;
- the terminal device sends feedback information to the network device, including:
- a second target difference set is a difference between a block error rate corresponding to the channel quality measurement value and a block error rate corresponding to the channel quality reference value
- Corresponding channel quality indicator set where the second target difference set is the third channel quality indicator set or the fourth channel quality indicator set;
- the terminal device sends feedback information for indicating a target differential indication value in the second target difference set to the network device.
- the channel quality indicator value includes an absolute indication value of channel quality, and the absolute indicator value is used to indicate a measured value of channel quality
- the channel quality indicator set is a subset or a complete set of the preset set; or the channel quality set is at least one set of the plurality of preset sets.
- the channel quality indicator set determined by the network device for the terminal device is a subset or a complete set of the preset set; the preset set may be a set specified by the protocol, that is, a preset set in the network device and the terminal device.
- the absolute indicator value included in the channel quality indicator set determined by the network device for the terminal device may be continuously selected from the preset set, or the absolute indicator value included in the channel quality indicator set may be preset. Non-continuous selection in the collection.
- the absolute indication value included in the channel quality indicator set determined by the network device for the terminal device is part or all of the channel quality indicator values in the at least one of the plurality of preset sets.
- the plurality of preset sets may be a preset set in the network device and the terminal device.
- the embodiment of the present application provides a terminal device, where the terminal device has a function of implementing a behavior of a terminal device in the method in the third aspect.
- the functions may be implemented by hardware or by corresponding software implemented by hardware.
- the hardware or software includes one or more modules corresponding to the functions described above.
- the terminal device includes a transceiver unit and a processing unit, and the processing unit is configured to acquire a channel quality indicator set determined by the network device for the terminal device, where the channel quality indicator set includes at least a channel quality indicator value, the channel quality indicator value being used to indicate channel quality;
- the transceiver unit is further configured to send feedback information, where the feedback information is used to indicate a target channel quality indicator value, where the target channel quality indicator value is a channel quality indicator value in the channel quality indicator set, the target channel The quality indicator value is used to determine the current channel quality of the channel.
- the terminal device includes a processor and a transceiver, where the processor is configured to acquire, by the network device, a channel quality indicator set determined by the network device, where the channel quality indicator set includes at least A channel quality indicator value, the channel quality indicator value being used to indicate channel quality.
- the transceiver is configured to send feedback information, where the feedback information is used to indicate a target channel quality indicator value, where the target channel quality indicator value is a channel quality indicator value in the channel quality indicator set, the target channel quality
- the indication value is used to determine the current channel quality of the channel.
- the principle and the beneficial effects of the terminal device for solving the problem can be referred to the method and the beneficial effects of the third aspect.
- the terminal device refer to the terminal device side method of the third aspect. The implementation, repetitions will not be repeated.
- the embodiment of the present application provides a modulation and coding policy indication manner, where the network device determines a modulation coding MCS level indication set of the terminal device, where the MCS level indication set includes an MCS level indication value, and the MCS level indication The value is used to indicate a modulation coding strategy;
- the network device sends the MCS level indication set to the terminal device.
- the network device sends indication information to the terminal device, where the indication information is used to indicate a target MCS level indication value in the MCS level indication set, and the target MCS level indication value is used to A modulation coding strategy used by the network device is indicated.
- the MCS level indication set is a subset or a complete set of the preset set; or the MCS level indication set is at least one set of the plurality of preset sets.
- the MCS level indication set determined by the network device for the terminal device is a subset or a complete set of the preset set; the preset set may be a set specified by the protocol, that is, a preset set in the network device and the terminal device.
- the MCS level indication value included in the MCS level indication set determined by the network device for the terminal device may be continuously selected from the preset set, or the MCS level indication value included in the MCS level indication set may be Non-continuously selected from a preset set.
- the network device indicates to the terminal device
- the MCS level indicates the set
- the number of elements included in the start element of the MCS level indication set and the MCS level indication set may be indicated only, or the network device only indicates the start element, and the MCS level indicates that the set is included in the set.
- the number of elements is the agreed value of the agreement.
- the network device indicates the MCS level indication set to the terminal device,
- the terminal device is instructed in the form of a bitmap.
- the MCS level indication value included in the MCS level indication set determined by the network device for the terminal device may be part or all of the MCS level indication values in the at least one of the plurality of preset sets.
- the plurality of preset sets may be a preset set in the network device and the terminal device.
- the embodiment of the present application provides a network device, where the network device has a function of implementing network device behavior in the method in the fifth aspect.
- the functions may be implemented by hardware or by corresponding software implemented by hardware.
- the hardware or software includes one or more modules corresponding to the functions described above.
- the network device includes a processing unit and a transceiver unit, where the processing unit is configured to determine a modulation and coding MCS level indication set of the terminal device, where the MCS level indication set includes an MCS level indication value, The MCS level indication value is used to indicate a modulation and coding strategy;
- the transceiver unit is configured to send the MCS level indication set to the terminal device. .
- the network device includes a processor and a transceiver, where the processor is configured to determine a modulation and coding MCS level indication set of the terminal device, where the MCS level indication set includes an MCS level indication value, The MCS level indication value is used to indicate a modulation and coding strategy;
- the transceiver is configured to send the MCS level indication set to the terminal device.
- the principle and the beneficial effects of the network device for solving the problem can be referred to the method and the beneficial effects of the fifth aspect.
- the network device refer to the network device side method according to the fifth aspect. The implementation, repetitions will not be repeated.
- the embodiment of the present application provides a modulation coding policy indication method, including:
- an MCS level indication set determined by the terminal device receives, by the terminal device, an MCS level indication set determined by the terminal device, where the MCS level indication set includes at least one MCS level indication value, where the MCS level indication value is used to indicate a modulation and coding policy;
- the terminal device stores the MCS level indication set.
- the terminal device receives indication information that is sent by the network device, where the indication information is used to indicate a target MCS level indication value in the MCS level indication set, where the target MCS level indication value is used. And indicating a modulation and coding strategy used by the network device.
- the MCS level indication set is a subset or a complete set of the preset set; or the MCS level indication set is one set of the multiple preset sets.
- an embodiment of the present application provides a terminal device, where the terminal device has a function of implementing a behavior of a terminal device in the method in the seventh aspect.
- the functions may be implemented by hardware or by corresponding software implemented by hardware.
- the hardware or software includes one or more modules corresponding to the functions described above.
- the terminal device includes a transceiver unit and a processing unit, where the transceiver unit is configured to receive an MCS level indication set determined by the terminal device, where the MCS level indication set includes an MCS level indication a value, the MCS level indication value is used to indicate a modulation and coding strategy;
- the processing unit is configured to store the MCS level indication set.
- the terminal device includes a processor and a transceiver, where the transceiver is configured to receive an MCS level indication set determined by the terminal device, where the MCS level indication set includes an MCS level indication a value, the MCS level indication value is used to indicate a modulation and coding strategy;
- the processor is further configured to store the MCS level indication set.
- the principle and the beneficial effects of the terminal device for solving the problem can be referred to the method and the beneficial effects of the seventh aspect.
- the terminal device refer to the terminal device side method according to the seventh aspect. The implementation, repetitions will not be repeated.
- the embodiment of the present application provides a computer readable storage medium, comprising instructions, when executed on a computer, causing a computer to perform the method of the network device according to the first aspect.
- an embodiment of the present application provides a computer readable storage medium, including instructions, when executed on a computer, causing a computer to perform the method on the terminal device side according to the third aspect.
- the embodiment of the present application provides a computer readable storage medium, comprising instructions, when executed on a computer, causing a computer to execute the method of the network device according to the fifth aspect.
- the embodiment of the present application provides a computer readable storage medium, including instructions, when executed on a computer, causing a computer to perform the method on the terminal device side according to the seventh aspect.
- the network device configures, for each terminal device, a channel quality indicator set that is specific to the terminal device, where the channel quality indicator set includes a channel quality indicator value, where the channel quality indicator value is used to indicate channel quality, the channel The quality indicator value is set for the channel quality of the terminal device. Therefore, when the channel device is fed back, the terminal device can accurately feed back the channel quality to the network device, and improve the accuracy of the channel quality feedback.
- the embodiment of the present application provides a method for determining channel quality, where the method is applied to a system supporting at least one block error rate BLER set, where a first BLER set in the at least one BLER set includes a first BLER a subset and a second BLER subset, the first BLER subset including at least one BLER, the second BLER subset including at least one BLER, the method comprising: the network device receiving each of the first BLER subsets sent by the terminal device Channel quality parameter corresponding to the BLER, the channel quality parameter is used to indicate channel quality between the terminal device and the network device; the network device according to at least one channel quality parameter difference and at least one BLER in the first BLER subset Determining, by the corresponding channel quality parameter, a channel quality parameter corresponding to the at least one BLER in the second BLER subset, where the at least one channel quality parameter difference includes a channel quality parameter corresponding to the at least one BLER in the second BLER subset and the first The difference in channel quality parameters
- the network device may receive the channel quality parameter corresponding to the BLER in the first BLER subset in the first BLER set sent by the terminal device, and according to the channel quality parameter corresponding to the partial BLER in the first BLER subset and the second BLER subset
- a channel quality parameter difference between a channel quality parameter corresponding to each BLER and a channel quality parameter corresponding to at least one BLER in the first BELR subset determines a channel quality parameter corresponding to all BLERs in the second BLER subset, that is, the network device can Determining channel quality parameters corresponding to all BLERs in the first BLER set, without requiring the terminal device to send channel quality parameters corresponding to all BLERs in the first BLER set, thereby saving signaling overhead.
- the method further includes: the network device sending a channel quality parameter request to the terminal device, where the channel quality parameter request is used to request at least one of the second BLER subset in the first BLER set At least one channel quality parameter difference of a channel quality parameter corresponding to the BLER corresponding channel quality parameter and at least one BLER in the first BLER subset in the first BLER set; the network device receiving the second in the first BLER set At least one channel quality parameter of the channel quality parameter corresponding to the at least one BLER in the BLER subset and the channel quality parameter corresponding to the at least one BLER in the first BLER subset in the first BLER set.
- the network device sends a channel quality parameter request to the terminal device when the channel quality parameter difference is required, and requests the channel quality parameter difference requested by the network device by using the channel quality parameter request, so as to prevent the terminal device from reporting the excess channel quality parameter difference value. , which further saves signaling overhead.
- the method further includes: the network device sending a channel quality parameter request to the terminal device, where the channel quality parameter request is used to request a second BLER in each BLER set in the at least one BLER set a channel quality parameter difference between a channel quality parameter corresponding to at least one BLER of the subset and a channel quality parameter corresponding to at least one BLER in the first BLER subset; the network device receiving the first of each BLER set in the at least one BLER set A channel quality parameter difference between a channel quality parameter corresponding to at least one BLER in the second BLER subset and a channel quality parameter corresponding to at least one BLER in the second BLER subset.
- the network device can request all channel quality parameter differences, and then can determine channel quality parameters corresponding to all BLERs, thereby improving channel quality reliability.
- any two BLER sets in the at least two BLER sets have different CQI levels.
- the network device can receive the channel quality parameter difference between the channel quality parameters corresponding to the BLER in the case of different CQI levels reported by the terminal device, thereby improving the channel quality parameter accuracy rate corresponding to the BLER in the second BLER subset.
- the transmission methods corresponding to any two BLER sets in the at least two BLER sets are different.
- the transmission method includes an antenna port configuration and/or a multiple input multiple output MIMO preprocessing manner.
- the network device can receive the channel quality parameter difference between the channel quality parameters corresponding to the BLER in the case of different antenna port configurations and/or multiple input multiple output MIMO preprocessing modes reported by the terminal device, thereby further improving the second BLER.
- the accuracy of the channel quality parameter corresponding to the BLER in the subset can be received.
- a method for determining channel quality is provided, the method being applied to a system supporting at least one block error rate BLER set, each BLER set in the at least one BLER set including a first BLER sub And a second BLER subset, the first BLER subset including at least one BLER, the second BLER subset including at least one BLER, the method comprising: the terminal device determining each BLER in the first BLER subset Corresponding channel quality parameter, the channel quality parameter is used to indicate channel quality between the terminal device and the network device; the terminal device sends, to the network device, each BLER corresponding to the first BLER subset a channel quality parameter, to enable the network device to determine a channel quality parameter corresponding to at least one BLER in the second BLER subset according to the at least one channel quality parameter difference value and the channel quality parameter corresponding to the at least one BLER in the first BLER subset
- the at least one channel quality parameter difference value includes a channel quality parameter corresponding to at least one BLER in the second BLER subset
- the channel quality parameter difference between the channel quality parameter and the channel quality parameter corresponding to the at least one BLER in the first BELR subset determines a channel quality parameter corresponding to all BLERs in the second BLER subset, that is, the network device can determine the first BLER
- the channel quality parameter corresponding to all the BLERs in the set does not require the terminal device to send the channel quality parameters corresponding to all the BLERs in the first BLER set, which saves signaling overhead.
- the method further includes: receiving, by the terminal device, a channel quality parameter request sent by a network device, where the channel quality parameter request is used to request a second BLER subset in the first BLER set At least one channel quality parameter of at least one BLER corresponding channel quality parameter and at least one channel quality parameter corresponding to at least one BLER of the first BLER subset in the first BLER set; the terminal device according to the channel quality Transmitting, to the network device, a channel quality parameter corresponding to at least one BLER in the second BLER subset in the first BLER set and at least one BLER in the first BLER subset in the first BLER set At least one channel quality parameter difference of the channel quality parameter.
- the terminal device receives a channel quality parameter request sent by the network device to the terminal device when the channel quality parameter difference is required, and feeds back the channel quality parameter difference required by the network device, so as to prevent the terminal device from reporting the excess channel quality parameter difference, thereby further One step saves on signaling overhead.
- the method further includes: receiving, by the terminal device, a channel quality parameter request sent by a network device, where the channel quality parameter request is used to request each BLER set in the at least one BLER set a channel quality parameter difference between a channel quality parameter corresponding to at least one BLER in the second BLER subset and a channel quality parameter corresponding to at least one BLER in the first BLER subset; the terminal device requests the location according to the channel quality parameter Transmitting, by the network device, a channel quality parameter of a channel quality parameter corresponding to at least one BLER in a second BLER subset in each of the at least one BLER set and a channel quality parameter corresponding to at least one BLER in the second BLER subset Difference.
- the terminal device may send all channel quality parameter differences requested by the network device to the network device, and then determine channel quality parameters corresponding to all BLERs, thereby improving channel reliability.
- the method further includes: if the method is applied to a system supporting at least two BLER sets, any two BLER sets of the at least two BLER sets have different CQI levels.
- the terminal device may send the channel quality parameter difference between the channel quality parameters corresponding to the BLER in the case of different CQI levels requested by the network device to the network device, thereby improving the channel quality parameter accuracy rate corresponding to the BLER in the second BLER subset.
- the transmission methods corresponding to any two BLER sets in the at least two BLER sets are different.
- the transmission method includes an antenna port configuration and/or a multiple input multiple output MIMO preprocessing method.
- the terminal device may send the difference between the channel quality parameters between the channel quality parameters corresponding to the BLER in different antenna port configurations and/or multiple input multiple output MIMO preprocessing modes requested by the network device to the network device, thereby further improving the The channel quality parameter accuracy rate corresponding to the BLER in the two BLER subsets.
- the fifteenth aspect provides a communication method, including: determining, by the terminal device, indication information according to the correspondence relationship table, where the indication information is used to indicate at least one channel quality indication CQI index value, where the correspondence relationship table includes N CQI index values. And M coding modes and K code rate parameters, and at least one CQI index value of the N CQI index values corresponds to one modulation mode, and K CQI index values of the N CQI index values are in one-to-one correspondence
- the terminal device determines the indication information according to the correspondence relationship table, where the indication information is used to indicate at least one channel quality indicator CQI index value, where the correspondence relationship table includes N CQI index values, M modulation modes, and K a rate parameter, and at least one of the N CQI index values corresponds to a modulation mode, and the K CQI index values of the N CQI index values correspond to the K code rate parameters one by one.
- the K code rate parameters include values greater than 0 and less than 40.
- the N CQI index values in the correspondence table are arranged in a descending order, and each of the first P CQI index values in the N CQI index values is indexed.
- the product of the modulation order of the modulation mode corresponding to the value and the corresponding code rate is arranged in descending order, and the product of the modulation order of the P+h CQI index value and the corresponding code rate is smaller than the Pth.
- the product of the modulation order of the modulation mode corresponding to the CQI index value and the corresponding code rate, N>P+h, and h takes from 1 to NX, X>P.
- the spectral efficiency of less than 0.0781 corresponding to the CQI index value may be sorted after the maximum spectral efficiency, so that the terminal device can determine the number of bits included in the channel quality indication information according to requirements.
- a communication method including: receiving, by a network device, indication information, where the indication information is used to indicate at least one channel quality indication CQI index value; and determining, by the network device, the at least one CQI according to the correspondence relationship table a modulation coding mode corresponding to the index value, the correspondence table includes N CQI index values, M modulation modes, and K code rate parameters, and at least one CQI index value of the N CQI index values corresponds to a modulation mode
- the K CQI index values of the N CQI index values are one-to-one corresponding to the K code rate parameters
- the code rate parameter corresponding to the first CQI index value of the N CQI index values is the first
- the network device receives the indication information, and determines, according to the correspondence table, a modulation mode corresponding to the at least one CQI index value, where the correspondence relationship table includes N CQI index values, M modulation modes, and K code rates.
- the present application can be applied to a system with a spectral efficiency requirement lower than 0.0781, that is, covering a bad channel condition area, and ensuring that the user communicates under the deep fading channel.
- the K code rate parameters include values greater than 0 and less than 40.
- the N CQI index values in the correspondence table are arranged in a descending order, and each of the first P CQI index values in the N CQI index values is indexed.
- the product of the modulation order of the modulation mode corresponding to the value and the corresponding code rate parameter are arranged in descending order, and the product of the modulation order of the P+h CQI index value and the corresponding code rate parameter is smaller than the product of the corresponding code rate parameter.
- the product of the modulation order of the modulation mode corresponding to the Pth CQI index value and the corresponding code rate parameter, N>P+h, and h is taken from 1 to NX, X>P.
- the spectral efficiency of less than 0.0781 corresponding to the CQI index value may be sorted after the maximum spectral efficiency, so that the terminal device can determine the number of bits included in the channel quality indication information according to requirements.
- the network device determines, according to the corresponding relationship table, indication information, where the indication information is used to indicate at least one channel quality indicator MCS index value, where the correspondence relationship table includes N MCS index values, M modulation modes, and K a rate parameter, and at least one of the N MCS index values corresponds to a modulation mode, and the K MCS index values of the N MCS index values correspond to the K code rate parameters one by one.
- the K code rates include values greater than 0 and less than 40, N ⁇ K, and K is a positive integer.
- the N MCS index values in the correspondence table are arranged in a descending order, and each of the first P MCS index values in the N MCS index values is indexed.
- the product of the modulation order of the modulation mode corresponding to the value and the corresponding code rate parameter are arranged in descending order, and the product of the modulation order of the P+h MCS index value and the corresponding code rate parameter is smaller than the product of the corresponding code rate parameter.
- the product of the modulation order of the modulation mode corresponding to the Pth MCS index value and the corresponding code rate parameter, N>P+h, and h is taken from 1 to NX, X>P.
- a communication method includes: receiving, by the terminal device, indication information, where the indication information is used to indicate at least one modulation and coding scheme MCS index value; and determining, by the terminal device, the At least one MCS index value corresponding to the modulation coding mode, the correspondence table includes N MCS index values, M modulation modes, and K code rate parameters, and at least one of the N MCS index values corresponds to one
- the modulation mode, the K MCS index values of the N MCS index values correspond to the K code rate parameters, and the code rate parameters corresponding to the first CQI index value of the N MCS index values
- the K code rate parameters include values greater than 0 and less than 40.
- the N MCS index values in the correspondence table are arranged in a descending order, and each of the first P MCS index values in the N MCS index values is indexed.
- the product of the modulation order of the modulation mode corresponding to the value and the corresponding code rate parameter are arranged in descending order, and the product of the modulation order of the P+h MCS index value and the corresponding code rate parameter is smaller than the product of the corresponding code rate parameter.
- the product of the modulation order of the modulation mode corresponding to the Pth MCS index value and the corresponding code rate parameter, N>P+h, and h is taken from 1 to NX, X>P.
- a network device comprising: a processor, a memory, and a communication interface.
- the processor is coupled to the memory and communication interface.
- the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
- the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the thirteenth aspect or any of the possible implementations of the thirteenth aspect.
- a terminal device comprising: a processor, a memory, and a communication interface.
- the processor is coupled to the memory and communication interface.
- the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
- the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the fourteenth or fourteenth aspects.
- a twenty-first aspect a computer storage medium storing program code for indicating execution of any of the possible implementations of the thirteenth aspect or the thirteenth aspect The instructions of the method.
- a twenty-second aspect a computer storage medium storing program code for indicating execution of any of the possible implementations of the fourteenth aspect or the fourteenth aspect, The instructions of the method.
- a twenty-third aspect a network device is provided, the network device comprising means for performing the method of any of the thirteenth aspect or the thirteenth aspect.
- a terminal device comprising means for performing the method of any of the fourteenth or fourteenth aspects of the fourteenth aspect.
- a system comprising:
- the network device of the twenty-third aspect, and the terminal device of the twenty-fourth aspect are identical to the network device of the twenty-third aspect, and the terminal device of the twenty-fourth aspect.
- a terminal device comprising: a processor, a memory, and a communication interface.
- the processor is coupled to the memory and communication interface.
- the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
- the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the fifteenth aspect or any of the possible implementations of the fifteenth aspect.
- a network device including: a processor, a memory, and a communication interface.
- the processor is coupled to the memory and communication interface.
- the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
- the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the sixteenth or sixteenth aspects.
- a twenty-eighth aspect a computer storage medium storing program code for indicating execution of any of the possible implementations of the fifteenth aspect or the fifteenth aspect, The instructions of the method.
- a twenty-ninth aspect a computer storage medium storing program code for indicating execution of any of the possible implementations of the sixteenth aspect or the sixteenth aspect The instructions of the method.
- a terminal device comprising means for performing the method of any of the fifteenth aspect or the fifteenth aspect of the fifteenth aspect.
- a thirty-first aspect a network device is provided, the network device comprising means for performing the method of any of the sixteenth or sixteenth aspects of the sixteenth aspect.
- a system comprising:
- the terminal device of the thirtieth aspect, and the network device of the above-mentioned thirty-first aspect are the terminal device of the thirtieth aspect, and the network device of the above-mentioned thirty-first aspect.
- a network device including: a processor, a memory, and a communication interface.
- the processor is coupled to the memory and communication interface.
- the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
- the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the seventeenth or seventeenth aspects.
- a terminal device comprising: a processor, a memory, and a communication interface.
- the processor is coupled to the memory and communication interface.
- the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
- the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the eighteenth or eighteenth aspects.
- a thirty-fifth aspect a computer storage medium storing program code for indicating execution of any of the possible implementations of the seventeenth aspect or the seventeenth aspect, The instructions of the method.
- a thirty-six aspect a computer storage medium storing program code for indicating execution of any of the possible implementations of the eighteenth aspect or the eighteenth aspect The instructions of the method.
- a thirty-seventh aspect a network device is provided, the network device comprising means for performing the method of any of the seventeenth or seventeenth aspects.
- a terminal device comprising means for performing the method of any of the eighteenth or eighteenth aspects of the eighteenth aspect.
- a system comprising:
- the network device of the thirty-seventh aspect and the terminal device of the thirty-eighth aspect.
- the network device in the embodiment of the present application may receive the channel quality parameter corresponding to the BLER in the first BLER subset in the first BLER set sent by the terminal device, and according to the channel quality corresponding to the partial BLER in the first BLER subset.
- the channel quality parameter difference between the parameter and the channel quality parameter corresponding to each BLER in the second BLER subset and the channel quality parameter corresponding to the at least one BLER in the first BELR subset determines the total BLER corresponding to the second BLER subset
- the channel quality parameter that is, the network device can determine the channel quality parameter corresponding to all the BLERs in the first BLER set, without requiring the terminal device to send the channel quality parameter corresponding to all the BLERs in the first BLER set, thereby saving signaling overhead.
- FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application
- FIG. 5 is a schematic diagram of SINR fluctuations provided by an embodiment of the present application.
- FIG. 6 is a simulation diagram of time correlation provided by an embodiment of the present application.
- FIG. 7 is a schematic diagram of a reference time provided by an embodiment of the present application.
- FIG. 8 is a schematic diagram of another reference time improved by an embodiment of the present application.
- FIG. 9 is a schematic diagram of a CQI table provided by an embodiment of the present application.
- FIG. 10 is an interaction diagram of a modulation coding policy indication method according to an embodiment of the present application.
- FIG. 11 is a schematic diagram of an MCS table provided by an embodiment of the present application.
- FIG. 12 is a schematic diagram of a logical structure of a network device according to an embodiment of the present application.
- FIG. 13 is a schematic structural diagram of a physical structure of a network device according to an embodiment of the present application.
- FIG. 14 is a schematic diagram of a logical structure of a terminal device according to an embodiment of the present application.
- FIG. 15 is a schematic diagram of a physical structure of a terminal device according to an embodiment of the present application.
- FIG. 16 is a schematic diagram of a logical structure of a network device according to an embodiment of the present application.
- FIG. 17 is a schematic structural diagram of a physical structure of a network device according to an embodiment of the present application.
- FIG. 18 is a schematic diagram showing the logical structure of a terminal device according to an embodiment of the present application.
- FIG. 19 is a schematic structural diagram of a physical structure of a terminal device according to an embodiment of the present disclosure.
- 21 is a schematic flowchart of channel quality parameter difference values of different terminal devices
- FIG. 22 is a schematic flowchart of a communication method according to an embodiment of the present application.
- FIG. 24 is a schematic block diagram of a network device according to an embodiment of the present application.
- 25 is a schematic structural diagram of a network device according to an embodiment of the present application.
- 26 is a schematic block diagram of a terminal device according to an embodiment of the present application.
- FIG. 27 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
- 29 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
- FIG. 30 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
- FIG. 31 is a schematic block diagram of a network device according to an embodiment of the present application.
- FIG. 32 is a schematic structural diagram of a network device according to an embodiment of the present application.
- Figure 33 is a schematic block diagram of a system in accordance with an embodiment of the present application.
- the preset set involved in the embodiment of the present application may be a set that is preset in the network device and the terminal device.
- the embodiment of the present application can be applied to a wireless communication system, where a wireless communication system usually consists of a cell, and each cell includes a base station (BS), and the base station provides communication services to multiple terminal devices, where the base station is connected to the core network device.
- the base station includes a baseband unit (BBU) and a remote radio unit (RRU).
- BBU baseband unit
- RRU remote radio unit
- the BBU and the RRU can be placed in different places, for example, the RRU is pulled away, placed in an open area from high traffic, and the BBU is placed in the central computer room.
- BBUs and RRUs can also be placed in the same room.
- the BBU and RRU can also be different parts under one rack.
- the wireless communication system mentioned in the embodiments of the present application includes, but is not limited to, a Narrow Band-Internet of Things (NB-IoT), and a Global System for Mobile Communications (GSM) system.
- NB-IoT Narrow Band-Internet of Things
- GSM Global System for Mobile Communications
- EDGE Enhanced Data Rate for GSM Evolution
- WCDMA Wideband Code Division Multiple Access
- CDMA Code Division Multiple Access
- TD-SCDMA Time Division-Synchronization Code Division Multiple Access
- LTE Long Term Evolution
- 5G systems and future mobile communication systems.
- the base station is a device deployed in a radio access network to provide a wireless communication function for the terminal device.
- the base station may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, transmission access point (TRP), and the like.
- TRP transmission access point
- the name of a device having a base station function may be different, for example, in an LTE system, an evolved Node B (evolved NodeB, eNB or eNodeB), in the third In a 3rd generation (3G) system, it is called a Node B (NB).
- a network device for example, in an LTE system, an evolved Node B (evolved NodeB, eNB or eNodeB), in the third In a 3rd generation (3G) system, it is called a Node B (NB).
- the terminal devices involved in the embodiments of the present application may include various handheld devices having wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to the wireless modem.
- the terminal device may also be referred to as a mobile station (MS), a terminal (Terminal), and may also include a subscriber unit, a cellular phone, a smart phone, a wireless data card, Personal Digital Assistant (PDA) computers, tablet computers, wireless modems, handsets, laptop computers, Machine Type Communication (MTC) terminals, and the like.
- MS mobile station
- Terminal Terminal
- PDA Personal Digital Assistant
- MTC Machine Type Communication
- the system will support multiple service types, different deployment scenarios, and a wider spectrum range.
- various types of services include, but are not limited to, enhanced mobile broadband (eMBB), Massive Machine Type Communication (mMTC), and ultra-reliable and low latency communications (Ultra-reliable and low latency communications, URLLC), Multimedia Broadcast Multicast Service (MBMS), positioning service, and the like.
- eMBB enhanced mobile broadband
- mMTC Massive Machine Type Communication
- URLLC ultra-reliable and low latency communications
- MBMS Multimedia Broadcast Multicast Service
- the wider spectrum range means that 5G will support a spectrum range up to 100 GHz, which includes both low frequency parts below 6 GHz and high frequency parts up to 100 GHz above 6 GHz.
- a major feature of the 5G communication system over the 4G communication system is the increased support for the URLLC service.
- URLLC services There are many types of URLLC services, and typical use cases include industrial control, industrial production process automation, human-computer interaction, and telemedicine.
- the 3GPP RAN and RAN1 working groups define the performance indicators of the URLLC service as follows:
- the user plane delay requirement of the URLLC service is 0.5 ms for both uplink and downlink. The above requirements are only applicable when the base station and the terminal are not in the discontinuous reception state. It should be noted that the 0.5 ms delay performance requirement here refers to the average delay of the data packet.
- Reliability The probability of successful transmission of X bits from the sender to the receiver within a certain time (L seconds) under the given channel quality conditions.
- the above time is still defined as the user application layer packet from the sender wireless protocol.
- a typical requirement is to achieve 99.999% reliability in 1ms.
- the above performance indicators need to be pointed out as typical values.
- the specific URLLC service may have different requirements for reliability. For example, some extremely demanding industries need to control the end-to-end delay within 0.25ms and achieve 99.9999999% transmission success. Probability.
- System capacity The maximum throughput of a cell that can be achieved by a system that satisfies a certain percentage of interrupted users.
- the interruption of the user here means that the system cannot meet the reliability requirements within a time delay range.
- CQI feedback technology is a typical channel quality feedback technique.
- the CQI feedback technology includes absolute indication value feedback and differential indication value feedback.
- the absolute indication value of the CQI is shown in the table of Figure 2. As shown, the index value of each CQI corresponds to the modulation and code rate under a particular channel condition.
- the absolute indicator value of the CQI in a table constitutes a set of channel quality indicators for a CQI.
- the absolute indication value feedback of the CQI is that after the terminal device measures the current channel quality, a feedback information is fed back, and the feedback information corresponds to the index value of the CQI corresponding to the current channel quality. That is, a kind of feedback information corresponds to an index value of a CQI. For example, if the index value of the CQI includes 16 types, feedback information of 4 bits is needed for feedback. In order to save feedback overhead, usually the CQI index value type setting will be less, for example, only 16 types are set, and the indication is relatively rough and the accuracy is not high.
- the differential indication value feedback is to first determine a CQI reference index value, and then the other CQI index values are The offset is calculated based on the reference index value, and the terminal device feeds back the feedback information corresponding to the offset.
- determine a plurality of optional offsets to form a CQI channel quality indicator set, and a feedback information corresponding to an offset, such as a CQI channel quality indicator set including ⁇ -1, 0, 1, 2 ⁇ the terminal device can feed back the four offsets with two bits of feedback information.
- the channel quality indicator set of the CQI is uniformly defined in the industry, such as the channel quality indicator set of the CQI shown in the table of FIG.
- the reference index values are different in different feedback scenarios, and the definition of the offset is also different.
- the offset between the wideband CQI index value of codeword 0 and the wideband CQI index value of codeword 1 is calculated with the wideband CQI index value of codeword 1 as the reference index value.
- the offset value between the CQI index value of the subband and the wideband CQI index value is calculated by using the wideband CQI index value as a reference index value.
- the wideband CQI index value is used as a reference index value, and an offset between the selected M-signal quality best sub-band CQI index value and the wideband CQI index value is calculated.
- all terminal devices use the same channel quality indicator set, which may result in inaccurate channel quality indication.
- the channel quality indicator set of FIG. 3 when the offset is 2, the terminal device feeds back The feedback information is 10, and when the offset is 5, the feedback information fed back by the terminal device is still 10, and the terminal device cannot accurately indicate the current channel quality of the channel.
- the embodiment of the present application separately sets a channel quality indicator set for each terminal device.
- the channel quality indicator value included in the channel quality indicator set may be the above-mentioned absolute indicator value or differential indication value.
- the number of the channel quality indicator values included in the channel quality indicator set configured for the terminal device is not limited, and may be one or more.
- the channel quality indicator value is used to indicate channel quality.
- the channel quality indicator set contains an absolute indication value of the channel quality (for example, an index value of the CQI).
- the network device configures, for each terminal device, a channel quality indicator set, where the channel quality indicator set may be a subset or a complete set of the preset set specified by the protocol, where the absolute preset value included in the preset set specified by the protocol is relatively large.
- the granularity of the partitioning is relatively small, and each absolute indicator value corresponds to a modulation and coding strategy under a specific channel condition.
- the channel quality indicator set is different for each channel device, and the selected subset of the channel quality is different.
- the channel quality indicator set configured by the network device for each terminal device may be at least one of a plurality of preset sets specified by the protocol, for example, the network device configures multiple channel quality indicator sets for one terminal device, and one channel quality The indication set corresponds to a service type, and the terminal device uses different channel quality indicator sets for feedback when feeding back different service types.
- the number of absolute indication values in the at least two preset sets in the multiple preset sets is different.
- the channel quality indicator set includes a differential indication value (eg, an offset of a CQI index value).
- the network device configures, for each terminal device, a channel quality indication set that is adapted to the channel quality variation of the terminal device. For example, if the terminal device is an intermediate user, the channel quality of the terminal device is relatively good, and the SINR fluctuation is small. The fluctuation of the differential indication value in the channel quality indicator set is relatively small. If the terminal device is an edge user, The channel quality of the terminal device is relatively poor, and the SINR fluctuation is large, and the fluctuation of the differential indication value in the channel quality indicator set is relatively large.
- Each terminal device can indicate the channel quality of the terminal device more accurately through feedback information.
- the terminal device can accurately feed back the current channel quality.
- FIG. 4 is a schematic flowchart of a channel quality feedback method according to an embodiment of the present disclosure, which is introduced from the perspective of interaction between a network device and a terminal device, and the method may include, but is not limited to, the following steps:
- Step S10 The network device determines a channel quality indicator set of the terminal device, where the channel quality indicator set includes a channel quality indicator value, where the channel quality indicator value is used to indicate channel quality.
- Step S11 The network device sends the channel quality indication set to the terminal device.
- Step S12 The terminal device acquires a channel quality indicator set determined by the network device for the terminal device, where the channel quality indicator set includes a channel quality indicator value, where the channel quality indicator value is used to indicate channel quality.
- Step S13 The terminal device sends feedback information to the network device, where the feedback information is used to indicate a target channel quality indicator value, and the target channel quality indicator value is a channel quality indicator value in the channel quality indicator set, The target channel quality indicator value is used to determine the current channel quality of the channel.
- Step S14 The network device receives the feedback information to determine the channel quality.
- the network device separately determines the channel quality indicator set for the terminal device, and sends the determined channel quality indicator set to the terminal device, and the terminal device subsequently feeds back the channel quality to the network device according to the channel quality indicator set.
- the network device separately determines the channel quality indicator set for the terminal device, where the network device configures the channel quality indicator set for the terminal device.
- the channel quality indicator set includes at least one channel quality indicator value, where the channel quality indicator value is used to indicate the quality of the channel.
- the channel quality indicator value may be a differential indication value of the channel quality or an absolute indication value of the channel quality, wherein the difference indication value of the channel quality is used to indicate an offset between the measured value of the channel quality and the reference value of the channel quality, the channel The absolute indicator value of the quality is used to represent the measured value of the channel quality.
- the channel quality may be CQI, MCS, or BLER. This application does not limit this. Here, only CQI, MCS, and BLER are used as an example.
- the measured value of the channel quality may be an index value of the CQI under the current channel quality condition
- the reference value of the channel quality may be an index value of the CQI of the feedback that is closest to the reference time corresponding to the measured value.
- It may be the index value of the CQI of the periodic feedback that is the closest to the reference time corresponding to the measured value, or may be the index value of the CQI of the non-periodic feedback that is the closest to the reference time corresponding to the measured value, or may be The value of the channel quality of the most recent feedback of the reference time corresponding to the distance measurement value in the specific channel quality report set).
- the reference time corresponding to the measured value may be a reference measurement time corresponding to the measured value or a measurement reporting time corresponding to the measured value.
- the measurement reporting time corresponding to the measured value refers to the time when the terminal device sends feedback information for the measured value of the channel quality (the feedback information is used to indicate the channel quality to the network device according to the measured value of the channel quality), and the reference measurement time is usually defined in the measurement report.
- the preset time interval before the time (for example, two sub-frames before the measurement report time).
- the terminal device measures the channel quality to obtain the measured value of the channel quality, and the measurement time of the terminal device to measure the channel quality overlaps with the reference measurement time, or the measurement time includes multiple, and the reference measurement time is one of the measurement times. As shown in FIG.
- t3 represents the measurement reporting time
- t2 represents the reference measurement time
- t1 represents the measurement time
- the interval between t2 and t3 is 1 sub-frame
- t1 overlaps with t2.
- t3 represents the measurement reporting time
- t2 represents the reference measurement time
- t1 represents the measurement time.
- the interval between t2 and t3 is 1 subframe
- t1 spans three subframes (that is, the terminal device).
- the channel quality is measured in all three subframes, and finally the mean of the channel quality is fed back.
- t2 is one subframe in t1.
- the size of the interval between t2 and t3 is usually agreed by the protocol.
- the measured value of the channel quality may be an MCS level that matches the target block quality rate and the current channel quality condition, and the reference value of the channel quality may be the MCS level used by the current transmission.
- the measured value of the channel quality may be the BLER level corresponding to the MCS used in the current channel quality condition, and the reference value of the channel quality may be the target BLER level expected for the current transmission.
- the BLER level division may include ⁇ 1, 2, 3, 4, 5 ⁇ , and the BLER corresponding to each BLER level is ⁇ 10 ⁇ -1, 10 ⁇ -2, 10 ⁇ -3, 10 ⁇ -4, 10 ⁇ -5, respectively. ⁇ .
- the channel quality indicator value in the channel quality indicator set is a differential indication value of the channel quality, that is, the channel quality indicator value is an offset between the channel quality measurement value and the channel quality reference value. . Because the channel quality changes of different terminal devices are different, a channel quality indicator set needs to be separately configured for each terminal device, and the channel quality indicator value in the channel quality indicator set is set according to the channel quality change of the terminal device, and can be accurately Reflecting the channel quality change of the terminal device.
- the received signal to interference plus noise ratio (SINR) of the terminal device at the edge of the cell or in the middle of the cell is different with time fluctuation.
- the solid line is the intermediate user of the cell, and the SINR fluctuation and the cumulative distribution function (CDF) distribution curve with an interval of 10 ms, 50%, 80%, and 95% corresponding SINR fluctuations are 0.8 dB, respectively. 1.2dB, 1.7dB.
- the dotted line in Figure 5 is the cell edge user, the SINR fluctuation and CDF distribution curve with interval of 10ms, 50%, 80%, 95% corresponding SINR fluctuations are 0.9dB, 2dB, 4.3dB, respectively, as shown in the following table:
- the network device can separately configure the channel quality indicator set for the edge user and the intermediate user.
- the channel quality is CQI as an example.
- the measured value of the channel quality is the index value of the measured CQI
- the reference value of the channel quality is the index value of the reference CQI.
- the differential indication value is the offset between the measured index value of the CQI and the index value of the reference CQI.
- the intermediate user is configured with a channel quality indicator set of ⁇ -1.2 - 0.8 0 0.8 ⁇ ;
- the edge user is configured with a channel quality indicator set of ⁇ -3 - 1.3 0 1.3 ⁇ .
- the fluctuation between the channel quality indicator values in the channel quality indicator set configured for the intermediate user is small, and the fluctuation between the channel quality indicator values in the channel quality indicator set configured for the edge user is large, which is mainly In order to adapt to the channel quality changes of intermediate users and edge users.
- the channel quality indicator set has only four differential indication values, and the corresponding UCI signaling is 2 bits, each user can accurately indicate the fluctuation of the current channel quality because the user-specific channel quality indicator set is adopted.
- the first value is too large for the intermediate user to offset downward (the subsequent transmission adopts a lower one) MCS level), resulting in wasted transmission resources.
- the first value is insufficient for the edge user to offset downwards, and the base station configures a higher MCS level to the terminal, causing a transmission error.
- the configuration may be performed according to the historical value of the channel quality reported by the terminal device. For example, if the CQI index value reported by the terminal device is low or fluctuating, the channel quality indicator set is set to a larger channel quality indicator value. Otherwise, set a smaller value.
- the value of the differential indication value in the channel quality indicator set may be an integer and/or a fraction, for example, the channel quality indicator set is ⁇ -0.3, 0, 0.3, 0.6 ⁇ .
- the value of the differential indicator value in the channel quality indicator set may be non-uniformly distributed.
- the channel quality indicator set is ⁇ -5, -1, 0, 1, 5 ⁇ .
- FIG. 6 is a simulation diagram of the relationship between the time interval size and the SINR of the channel provided by the embodiment of the present application.
- the abscissa is the time interval, the unit is millisecond, and the ordinate is the correlation coefficient of SINR.
- the larger the time interval the smaller the SINR correlation of the channel, and the difference of the channel quality in the corresponding channel quality indicator set.
- the fluctuation of the indicated value is also greater.
- the smaller the time interval the greater the SINR correlation of the channel, and the smaller the fluctuation of the differential indication value of the channel quality in the corresponding channel quality indicator set.
- the difference indication value of the channel quality in the channel quality indicator set is used to indicate an offset between the measured value of the channel quality and the reference value of the channel quality, that is, the reference time corresponding to the measured value of the channel quality.
- the size of the time interval between reference times corresponding to the channel quality reference value determines the magnitude of the fluctuation of the differential indicator value in the channel quality indicator set.
- the reference time corresponding to the reference value of the channel quality is the reference measurement time corresponding to the reference value of the channel quality or the measurement reporting time corresponding to the reference value of the channel quality, where the reference measurement time corresponding to the channel quality reference value is The reference measurement time corresponding to the measured value is the same.
- the measurement reporting time corresponding to the reference value of the channel quality is the same as the measurement reporting time corresponding to the measured value, and is not described here.
- the interval of the multiple time intervals in the embodiment of the present application respectively corresponds to multiple channel quality indication sets, and the intervals of the multiple time intervals do not overlap, and the time interval is the reference time and channel quality corresponding to the measured values.
- the interval of the first time interval and the interval of the second time interval in the embodiment of the present application may be any two time interval intervals in the interval of the plurality of time intervals.
- the interval of the first time interval corresponds to the first channel quality indicator set
- the interval of the second time interval corresponds to the second channel quality indicator set.
- the fluctuation of the differential indication value in the first channel quality indicator set is smaller than that in the second channel quality indicator set.
- the difference indicates the fluctuation of the value.
- the variance of the differential indication value in the first channel quality indicator set may be smaller than the variance of the differential indication value in the second channel quality indicator set.
- the corresponding channel quality indicator set when the interval of the network device setting interval is less than 5 ms, the corresponding channel quality indicator set is ⁇ -0.5, 0, 0.5, 1 ⁇ ; when the interval of the network device setting interval is greater than 5 ms and less than 10 ms, the corresponding channel quality indicator The set is ⁇ -1, 0, 1, 2 ⁇ ; when the interval of the network device setting interval is greater than 10 ms, the corresponding channel quality indicator set is ⁇ -2, 0, 2, 4 ⁇ .
- the channel quality change is related to the size of the referenced BLER. For example, if the BLER corresponding to the measured value is the same as the BLER corresponding to the reference value, the SINR is relatively small, and correspondingly, the channel in the channel quality indicator set The fluctuation of the quality differential indication value is small. If the BLER corresponding to the measured value is different from the BLER corresponding to the reference value, the SINR has a large difference, and correspondingly, the fluctuation of the difference indication value of the channel quality in the channel quality indicator set is large. Moreover, if the BLER corresponding to the measured value is greater than the BLER corresponding to the reference value, the differential indication value in the channel quality indicator set is greater than 0 or equal to 0. If the BLER corresponding to the measured value is smaller than the BLER corresponding to the reference value, the differential indication value in the channel quality indicator set is less than 0 or equal to 0.
- the interval in which the multiple BLER differences are set in the embodiment of the present application respectively corresponds to multiple channel quality indicator sets, and the multiple BLER difference intervals do not overlap, and the BLER difference is the reference of the BLER and channel quality corresponding to the measured value.
- the interval in which the first BLER difference interval and the second BLER difference in the embodiment of the present application may be an interval of any two BLER differences in the plurality of BLER difference intervals.
- the interval of the first BLER difference corresponds to the first channel quality indicator set, and the interval of the second BLER difference corresponds to the second channel quality indicator set.
- the fluctuation of the differential indication value in the first channel quality indicator set is smaller than The second channel quality indicates a fluctuation of the differential indication value in the set.
- the variance of the differential indication value in the first channel quality indicator set may be smaller than the variance of the differential indication value in the second channel quality indicator set.
- the network device sends the configured channel quality indicator set to the terminal device.
- the channel quality indicator set may be sent by a high layer signaling configuration, or the channel quality indicator set may also be sent by using a MAC CE signaling configuration. Further, the channel quality indicator set may also be sent by using a user-specific signaling configuration.
- the terminal device acquires a channel quality indicator set determined by the network device for the terminal device, where the channel quality indicator set includes a differential indication value of the channel quality, for example, the channel quality indicator set determined by the network device for the terminal device is ⁇ -1, 0, 1, 2 ⁇ .
- the following table shows the correspondence between the feedback information and the differential indication value of the CQI.
- the terminal device transmits the feedback information 10.
- the network device can calculate the measured value of the channel quality according to the reference value of the channel quality.
- the measured value of the channel quality is used to indicate the current channel quality, thereby affecting the MCS and/or power configured during subsequent network device scheduling.
- the intervals of the multiple time intervals respectively correspond to the multiple channel quality indication sets.
- the corresponding channel quality indicator set is ⁇ -0.5, 0, 0.5, 1 ⁇
- the corresponding channel quality indicator The set is ⁇ -1, 0, 1, 2 ⁇
- the corresponding channel quality indicator set is ⁇ -2, 0, 2, 4 ⁇ .
- the time interval between the time t1 and the time t0 is 6 ms, and the corresponding channel quality indication set is ⁇ -1, 0, 1, 2 ⁇ , and the feedback information corresponding to the differential indication value 1 is the terminal 10.
- the terminal device sends feedback information 10.
- the network device After receiving the feedback information 10, the network device first needs to determine the first target channel quality indicator set corresponding to the feedback information. Specifically, the network device determines that the reference time corresponding to the measured value is between the reference time corresponding to the reference value. The time interval is determined, and the time interval belongs to a section of the target time interval in the interval of the plurality of time intervals set in advance, and the channel quality indicator set corresponding to the interval of the target time interval is used as the first target channel quality indicator set. For example, the network device determines that the first target channel quality indicator set is a channel quality indicator set ⁇ -1, 0, 1, 2 ⁇ corresponding to a time interval of more than 5 ms and less than 10 ms.
- the target difference indication value is determined according to the feedback information 10
- the channel quality measurement value is obtained according to the channel quality reference value, where the channel quality measurement value is used to indicate the current channel quality. In turn, it affects the MCS and/or power configured during subsequent network device scheduling.
- the multiple BLER difference intervals respectively correspond to the multiple channel quality indicator sets, and the multiple BLER difference intervals do not overlap each other.
- the section of the third block error rate difference and the section of the fourth block error rate difference in the embodiment of the present application may be a section of any two block error rate differences among the plurality of BLER difference sections.
- the interval of the third block error rate corresponds to the third channel quality indicator set, and the interval of the fourth block error rate difference corresponds to the fourth channel quality indicator set.
- the indication set is ⁇ 0, 1, 2, 3 ⁇ ; the BLER difference is ⁇ 0, and the channel quality indicator set is ⁇ -3, -2, -1, 0 ⁇ .
- the BLER of its reference is 10%, and the time t0 is before the time t1.
- the terminal device sends feedback information 11.
- the network device After receiving the feedback information 11, the network device first needs to determine a second target channel quality indicator set corresponding to the feedback information. Specifically, the network device determines a BLER between the BLER corresponding to the measured value and the BLER corresponding to the reference value. The difference is determined, and the BLER difference belongs to a section of the target BLER difference in the interval of the plurality of BLER differences set in advance, and the channel quality indicator set corresponding to the section of the target BLER difference is used as the second target channel quality indicator set. For example, the network device determines that the second target channel quality indicator set is a channel quality indicator set ⁇ -3, -2, -1, 0 ⁇ corresponding to a BLER difference interval. Further, the target difference indication value is determined according to the feedback information 11. The channel quality measurement value is obtained according to the channel quality reference value, and the channel quality measurement value is used to indicate the current channel quality. In turn, it affects the MCS and/or power configured during subsequent network device scheduling.
- the channel quality indicator value in the channel quality indicator set is an absolute indicator value of the channel quality
- the channel quality absolute indicator value is used to indicate a channel quality measurement value, such as a measured CQI index value.
- Different users usually work in different SINR intervals. For example, edge users usually work at lower SINRs, such as -12dB to -2dB; central users operate at higher SINRs, such as 15dB to 25dB. Because the range of CQI index values for different user measurement feedback will also be different.
- the network device independently configures a channel quality indication set for each terminal device, and the absolute indication value in the channel quality indicator set is set according to the channel quality of the terminal device. The channel quality change of the terminal device can be more accurately reflected.
- the channel quality indicator set configured by the network device for the terminal device may be a subset or a complete set of the preset set, where the preset set is a set specified by the protocol. As shown in FIG. 9 , it may be a preset set specified by the protocol, where the preset set includes 32 types of absolute indication values.
- the network device configures the preset set for the terminal device according to the channel quality of each terminal device. A subset or a complete set.
- the channel quality indicator set configured by the network device to the edge user is a set of the working interval in the range of 0-15
- the channel quality indicator set configured by the network device to the central user is a set of the working interval in the range of 16-31.
- the channel quality indicator set configured by the network device for the terminal device may be a set obtained by continuously taking values from a preset set specified by the protocol; or the channel quality indicator set configured by the network device for the terminal device may be a pre-defined by the protocol. Let the non-continuous values in the set get the set.
- the network device may directly indicate an absolute indication value included in the channel quality indicator set, such as directly indicating an index value of the CQI included in the channel quality indicator set.
- the channel quality indicator set configured by the network device to the edge device of the edge user is ⁇ 0 2 4 6 8 10 12 ⁇
- the channel quality indicator set configured by the network device to the terminal device of the central user is ⁇ 14 16 18 20 22 24 ⁇
- the SINR interval detected by the edge device of the edge user and the terminal device of the center user is different, so CQIs of different intervals are configured.
- the number of the absolute indicator values in the channel quality indicator set indicated by the network device to the terminal device may be agreed by a protocol (the number of protocols agreed, that is, the number of network devices and terminal devices preset), or configurable . If the number of the absolute indicator values in the channel quality indicator set is configurable, the number of the absolute indicator values in the channel quality indicator set corresponding to the URLLC service is smaller than the absolute indicator value in the channel quality indicator set corresponding to the eMBB service. quantity.
- the network device is configured according to traffic and/or channel quality fluctuations, for example, a channel quality indicator set with a small number of absolute indication values is configured for a user with a slow moving speed or a static state, and an absolute indicator value is configured for a user with a faster moving speed. More channel quality indicator sets.
- the channel quality indicator set configured by the network device to the terminal device of the URLLC service is ⁇ 0 2 4 6 8 ... 28 30 ⁇ , that is, an even CQI index value.
- the channel quality indication set configured by the network device to the terminal device of the eMBB service is ⁇ 0, 1, 2, ... 31 ⁇ or ⁇ 6 8 10 12 14 16 17 ... 31 ⁇ .
- the URLLC service has limited overhead for CQI indication signaling, it can be uniformly extracted from the preset set, but is not limited to uniform extraction.
- the terminal device of the eMBB service is insensitive to the CQI indication signaling overhead.
- the terminal device of the eMBB service can be configured with a larger set, and the entire preset set can be configured for the terminal device of the eMBB service.
- the default configuration may be on the terminal side without additional signaling indication.
- the channel quality indicator set configured by the network device for the terminal device is a set obtained by consecutive values in a preset set specified by the protocol, or the channel quality indicator set configured by the network device for the terminal device is a preset interval set by the protocol.
- the set of elements obtained for example, one element separated by one, the serial number is 3, 5, 7.
- the signaling when the network device indicates the channel quality indication set to the terminal device may include but is not limited to high layer signaling, MAC CE signaling, user-specific signaling, etc. may only indicate the channel quality indicator set.
- the channel quality indication set is the absolute indication value in the channel quality indication set.
- the number of elements in the channel quality indicator set is agreed by the protocol, and the channel quality indicator set configured by the network device for the terminal device is composed of consecutive absolute indication values in the preset set specified by the protocol.
- the channel quality indicator set configured by the network device to the edge device of the edge user is ⁇ 0 1 2 3 4 5 6 7 8 9 10 11 ⁇ , indicating 0;
- the channel quality indication set configured by the network device to the terminal device of the central user is ⁇ 10 11 12 13 14 15 16 17 18 19 20 21 ⁇ , then indicate 10.
- the number of elements in the channel quality indicator set may be bound to the service type (for example, the number of elements included in the channel quality indicator set of the URLLC service is 8, and the elements included in the channel quality indicator set of the eMBB service are included. The number is 16).
- the number of elements in the channel quality indicator set is agreed by the protocol, and the channel quality indicator set configured by the network device for the terminal device is composed of a preset set medium interval element specified by the protocol, that is, the value is set from the preset set medium interval. Then, only the sequence number of the starting element is indicated (if the channel quality is CQI, the sequence number is the index value of the CQI).
- the channel quality indicator set configured by the network device to the edge device of the edge user is ⁇ 0 2 4 6 8 10 ⁇ , indicating 0.
- the channel quality indication set configured by the network device to the central user's terminal device is ⁇ 10 12 14 16 18 20 ⁇ , indicating 10.
- the number of elements in the channel quality indicator set may be bound to the service type (for example, the number of elements included in the channel quality indicator set of the URLLC service is 8, and the elements included in the channel quality indicator set of the eMBB service are included. The number is 16).
- the network device may only indicate the starting position (starting position) It may be a sequence number, such as an index value of the CQI, and the number of absolute indicator values included in the channel quality indicator set (eg, the number of CQI index values included).
- the starting position and the number of absolute indication values may be independently encoded or jointly encoded.
- the channel quality indicator set configured by the network device to the edge device of the edge user is ⁇ 0 2 4 6 8 10 ⁇ , then ⁇ 0, 6 ⁇ is indicated, where 0 is the starting position and 6 is the channel quality indicator set.
- two elements 0 and 6 can be jointly coded, for example, 160 calculated according to the tree indication formula.
- the channel quality indication set configured by the network device to the central user's terminal device is ⁇ 10 11 12 13 14 15 16 17 18 19 20 ⁇ , indicating ⁇ 10, 11 ⁇ , where 10 is the starting position and 11 is the channel quality.
- jointly encode the 10, 11 elements for example, 331 according to the tree indication formula. Tree shape
- RIV N CQI (N CQI -L Set +1)+(N CQI -1-Set start )
- L Set is the number of CQIs in the channel quality indicator set
- N CQI is the number of elements in the preset set
- Set start is the starting position
- the signaling for indicating the channel quality indicator set (the signaling may include However, it is not limited to high-level signaling, MAC CE signaling, user-specific signaling, etc., and may be indicated to the terminal device by using a bitmap.
- the preset set includes 64 absolute indication values, 64 bits are used for indication, if channel quality If the absolute indication value is included in the indication set, the bit position corresponding to the absolute indication value is set to 1. If the absolute indication value is not included in the channel quality indication set, the bit position corresponding to the absolute indication value is 0.
- the channel quality indicator set configured by the network device to the edge device of the edge user is ⁇ 0 2 4 6 8 10 12 ⁇
- the channel quality indicator set configured by the network device to the terminal device of the central user is ⁇ 14 16 18 20 22 24 ⁇ . Then, when the terminal device is instructed to indicate to the terminal device, the terminal device may indicate 10101010101010000...0;
- the terminal device acquires a channel quality indicator set determined by the network device, where the channel quality indicator set is a subset or a complete set of the preset set, and the channel quality indicator set includes an absolute indication value of the channel quality, and the terminal device measures the channel quality, and The network device transmits feedback information corresponding to the measured value of the channel quality.
- the number of bits of the feedback information is related to the number of absolute indication values included in the channel quality indication set. For example, as shown in FIG. 9, the preset set includes 32 absolute indication values, and the number of absolute indication values included in the channel quality indication set configured by the network device for the terminal device is 16 (for example, the interval 0-15 or 16-31) ), the terminal device can use 4 bits of feedback information for feedback.
- the network device After receiving the feedback information sent by the terminal device, the network device needs to determine the absolute indication value corresponding to the feedback information. For example, if the feedback information sent by the terminal device is 1111, the absolute indication value 15 or 31 may be indicated. Therefore, the network device needs to obtain a channel quality indicator set that is configured in advance for the terminal device. For example, if the channel quality indicator set configured by the network device for the terminal device is 16 to 31, the absolute indication value corresponding to the feedback information is 31.
- the network device configures, for each terminal device, a channel quality indicator set that is specific to the terminal device, where the channel quality indicator set includes a channel quality indicator value, where the channel quality indicator value is used to indicate channel quality, and the channel quality is
- the indication value is a channel quality setting for the terminal device. Therefore, when the channel device feeds back the channel quality, the terminal device can accurately feed back the channel quality to the network device, and improve the accuracy of the channel quality feedback.
- FIG. 10 is a schematic flowchart of a method for indicating a modulation and coding policy according to an embodiment of the present disclosure, which is introduced from the perspective of interaction between a network device and a terminal device, and the method may include, but is not limited to, the following steps:
- Step S20 The network device determines a modulation and coding MCS level indication set of the terminal device, where the MCS level indication set includes an MCS level indication value, where the MCS level indication value is used to indicate a modulation and coding policy;
- Step S21 The network device sends the MCS level indication set to the terminal device.
- Step S22 The terminal device receives an MCS level indication set determined by the terminal device, where the MCS level indication set includes an MCS level indication value, where the MCS level indication value is used to indicate a modulation and coding policy.
- Step S23 the terminal device stores the MCS level indication set.
- Step S24 The network device sends the indication information to the terminal device, where the indication information is used to indicate a target MCS level indication value in the MCS level indication set, where the target MCS level indication value is used to indicate that the network device uses Modulation coding strategy.
- step S25 the terminal device receives the indication information sent by the network device, where the indication information is used to indicate a target MCS level indication value in the MCS level indication set, where the target MCS level indication value is used to indicate the network device.
- different terminal devices usually work in different SINR intervals. For example, when the terminal device is an edge user, it usually works at a lower SINR, such as -12 dB to -2 dB. When the terminal device is a central user, it usually works. At higher SINR, such as 15dB ⁇ 25dB.
- the MCS level of the network device transmitting data to the edge user or the central user may also be different. For example, the MCS level used by the network device to transmit data to the edge user is relatively low, and the MCS level used by the network device to transmit data to the central user is compared. high. In order to reduce the indication overhead, the network device independently configures the MCS level indication set for each terminal device.
- the MCS level indication set configured by the network device for the terminal device is a subset or a complete set of the preset set, and the preset set may be a set specified by the protocol. As shown in FIG. 11 , it may be a preset set provided by an embodiment of the present application, where the preset set includes 64 MCS levels.
- the network device may configure some of the 64 MCS levels or all MCS levels according to the channel quality condition of the terminal device.
- the MCS level indication set configured by the network device to the terminal device belonging to the edge user is: 0-27, 58-61
- the MCS level indication set configured by the network device to the terminal device belonging to the central user is: 28-57, 61 -63.
- the numerical serial numbers herein all represent the MCS level in FIG. 11, wherein the MCS level of 58-63 is used for retransmission.
- the MCS level indication set configured by the network device for the terminal device may be composed of consecutive MCS level indication values (ie, MCS levels) in the preset set specified by the protocol; or the channel quality indication set configured by the network device for the terminal device may be It is composed of non-contiguous MCS level indication values (ie, MCS levels) in the preset set specified by the protocol.
- the MCS level indication set configured by the network device for the terminal device is composed of consecutive MCS level indication values in the preset set specified by the protocol, or the MCS level indication set configured by the network device for the terminal device is a preset set specified by the protocol.
- the interval MCS level indicates the value composition (for example, one value is separated by one element, and the serial number is 3, 5, 7).
- the signaling of the network device when indicating the MCS level indication set to the terminal device may include but is not limited to high layer signaling, MAC CE signaling, user-specific signaling, etc.), and may only indicate the MCS level indication set.
- the number of the MCS level indication set is the MCS level indication value in the MCS level indication set.
- the signaling when the network device indicates the MCS level indication set to the terminal device may also be indicated by a tree indicating method, and the tree indicating method and the tree indicating method in the embodiment of FIG. 4 are This will not be repeated here.
- the signaling used to indicate the MCS level indication set (the signaling may include However, it is not limited to high-level signaling, MAC CE signaling, user-specific signaling, etc., and may be indicated to the terminal device by using a bitmap. For example, if the preset set includes 64 absolute indication values, 64 bits are used for indication, if the MCS level is used. If the MCS level indication value is included in the indication set, the bit position corresponding to the MCS level indication value is set to 1. If the MCS level indication value is not included in the MCS level indication set, the bit position corresponding to the MCS level indication value is used. 0.
- the terminal device acquires and stores an MCS level indication set configured by the network device for the terminal device.
- the network device transmits data to the terminal device, the network device needs to indicate to the terminal device, the used target MCS level indication value, where the target MCS level indication value is used to indicate a modulation and coding policy used by the network device, so that the terminal device can
- the received data is processed according to the modulation and coding strategy.
- the network device sends the indication information to the terminal device, where the indication information is used to indicate the target MCS level indication value in the MCS level indication set configured for the terminal device.
- the network device may send the indication information to the terminal device by using the DCI.
- the MCS level indication set configured by the network device for the terminal device is: 0-27, 58-61; the indication information may be 5 bits, and one indication information corresponds to an MCS level indication value.
- the terminal device searches for a target MCS level indication value corresponding to the indication information according to the MCS level indication set configured by the network device, where the target MCS level indication value is used to indicate a modulation and coding policy used by the network device.
- the network device determines, for the terminal device, the MCS level indication set that is specific to the terminal device, where the MCS level indication set includes an MCS level indication value, where the MCS level indication value is used to indicate a modulation and coding policy, and the terminal device is exclusive.
- the MCS level indication set may be a set according to the channel quality of the terminal device.
- FIG. 12 is a schematic diagram of a logical structure of a network device according to an embodiment of the present disclosure.
- the network device 101 may include a processing unit 1011 and a transceiver unit 1012.
- the processing unit 1011 is configured to determine a channel quality indicator set of the terminal device, where the channel quality indicator set includes at least one channel quality indicator value, where the channel quality indicator value is used to indicate channel quality;
- the transceiver unit 1012 is configured to send the channel quality indication set to the terminal device.
- processing unit 1011 is configured to perform step S10 in the method embodiment shown in FIG. 4, and the transceiver unit 1012 is configured to perform step S11 in the method embodiment shown in FIG.
- FIG. 13 is a schematic diagram showing the physical structure of a network device according to an embodiment of the present application.
- the network device 102 includes a processor 1021, a transceiver 1022, and a memory 1023.
- the processor 1021, the memory 1023, and the transceiver 1022 are connected to each other through a bus.
- the memory 1023 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an Erasable Programmable Read Only Memory (EPROM), or A Compact Disc Read-Only Memory (CD-ROM) for storing related instructions and data.
- RAM random access memory
- ROM read-only memory
- EPROM Erasable Programmable Read Only Memory
- CD-ROM Compact Disc Read-Only Memory
- the transceiver 1022 can be a communication module and a transceiver circuit for transmitting data, signaling, and the like between the network device and the terminal device.
- the transceiver 1022 is configured to perform step S11 in the method embodiment shown in FIG.
- the processor 1021 can be a controller, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), and an on-site Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or perform various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of the present application.
- the processor 1021 can also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. In the embodiment of the present application, the processor 1021 is configured to perform step S10 in the embodiment shown in FIG.
- the processor 1021 is configured to determine a channel quality indicator set of the terminal device, where the channel quality indicator set includes at least one channel quality indicator value, where the channel quality indicator value is used to indicate channel quality.
- the transceiver 1022 is configured to send the channel quality indication set to the terminal device.
- FIG. 14 is a schematic diagram of a logical structure of a terminal device according to an embodiment of the present disclosure.
- the terminal device 201 may include a transceiver unit 2011 and a processing unit 2012.
- the processing unit 2012 is configured to obtain a channel quality indicator set determined by the network device for the terminal device, where the channel quality indicator set includes at least one channel quality indicator value, where the channel quality indicator value is used to indicate channel quality;
- the transceiver unit 2011 is configured to send feedback information to the network device, where the feedback information is used to indicate a target channel quality indicator value, and the target channel quality indicator value is a channel quality indicator value in the channel quality indicator set.
- the target channel quality indicator value is used to determine the current channel quality of the channel.
- transceiver unit 2011 is configured to perform step S13 in the method embodiment shown in FIG. 4, and the processing unit 2012 is configured to perform step S12 in the method embodiment shown in FIG.
- FIG. 15 is a terminal device 202 according to an embodiment of the present disclosure.
- the terminal device 202 includes a processor 2021, a transceiver 2022, and a memory 2023.
- the processor 2021, the memory 2023, and the transceiver 2022 pass through a bus. Connected to each other.
- Memory 2023 includes, but is not limited to, a RAM, ROM, EPROM, or CD-ROM for storing associated instructions and data.
- the transceiver 2022 can be a communication module and a transceiver circuit for transmitting data, signaling, and the like between the network device and the terminal device.
- the transceiver 2022 is configured to perform step S13 in the method embodiment shown in FIG.
- the processor 2021 can be a controller, a CPU, a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or perform various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of the present application. Processor 2021 may also be a combination of computing functions, such as one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. In the embodiment of the present application, the processor 2021 is configured to perform step S12 in the embodiment shown in FIG.
- the processor 2021 is configured to obtain a channel quality indicator set determined by the network device for the terminal device, where the channel quality indicator set includes at least one channel quality indicator value, where the channel quality indicator value is used to indicate channel quality.
- the transceiver 2022 is configured to send, to the network device, feedback information, where the feedback information is used to indicate a target channel quality indicator value, where the target channel quality indicator value is a channel quality indicator value in the channel quality indicator set, where The target channel quality indicator value is used to determine the current channel quality of the channel.
- FIG. 16 is a schematic diagram of a logical structure of a network device according to an embodiment of the present disclosure.
- the network device 301 may include a processing unit 3011 and a transceiver unit 3012.
- the processing unit 3011 is configured to determine a modulation and coding MCS level indication set of the terminal device, where the MCS level indication set includes at least one MCS level indication value, where the MCS level indication value is used to indicate a modulation and coding policy;
- the transceiver unit 3012 is configured to send the MCS level indication set to the terminal device.
- processing unit 3011 is configured to perform step S20 in the method embodiment shown in FIG. 10
- transceiver unit 3012 is configured to perform step S21 in the method embodiment shown in FIG.
- FIG. 17 is a schematic diagram showing the physical structure of a network device according to an embodiment of the present disclosure.
- the network device 302 includes a processor 3021, a transceiver 3022, and a memory 3023.
- the processor 3021, the memory 3023, and the transceiver The 3022 is connected to each other through a bus.
- the memory 3023 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an Erasable Programmable Read Only Memory (EPROM), or A Compact Disc Read-Only Memory (CD-ROM) for storing related instructions and data.
- RAM random access memory
- ROM read-only memory
- EPROM Erasable Programmable Read Only Memory
- CD-ROM Compact Disc Read-Only Memory
- the transceiver 3022 can be a communication module and a transceiver circuit for transmitting data, signaling, and the like between the network device and the terminal device.
- the transceiver 3022 is configured to perform step S21 in the method embodiment shown in FIG.
- the processor 3021 can be a controller, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), and an on-site Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or perform various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of the present application. Processor 3021 may also be a combination of computing functions, such as one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. In the embodiment of the present application, the processor 3021 is configured to perform step S20 in the embodiment shown in FIG.
- the processor 3021 is configured to determine a modulation and coding MCS level indication set of the terminal device, where the MCS level indication set includes at least one MCS level indication value, where the MCS level indication value is used to indicate a modulation and coding policy;
- the transceiver 3022 is configured to send the MCS level indication set to the terminal device.
- FIG. 18 is a schematic diagram of a logical structure of a terminal device according to an embodiment of the present disclosure.
- the terminal device 401 may include a transceiver unit 4011 and a processing unit 4012.
- the transceiver unit 4011 is configured to receive an MCS level indication set that is determined by the terminal device, where the MCS level indication set includes at least one MCS level indication value, where the MCS level indication value is used to indicate a modulation and coding policy;
- the processing unit 4012 is configured to store the MCS level indication set.
- transceiver unit 4011 is configured to perform step S22 in the method embodiment shown in FIG. 10
- processing unit 4012 is configured to perform step S23 in the method embodiment shown in FIG.
- FIG. 19 is a terminal device 402 according to an embodiment of the present disclosure.
- the terminal device 402 includes a processor 4021, a transceiver 4022, and a memory 4023.
- the processor 4021, the memory 4023, and the transceiver 4022 pass through a bus. Connected to each other.
- Memory 4023 includes, but is not limited to, a RAM, ROM, EPROM, or CD-ROM for storing associated instructions and data.
- the transceiver 4022 can be a communication module and a transceiver circuit for transmitting data, signaling, and the like between the network device and the terminal device.
- the transceiver 4022 is configured to perform step S22 in the method embodiment shown in FIG.
- the processor 4021 can be a controller, a CPU, a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or perform various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of the present application.
- the processor 4021 can also be a combination of computing functions, such as one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. In the embodiment of the present application, the processor 4021 is configured to perform step S23 in the embodiment shown in FIG.
- the transceiver 4022 is configured to receive an MCS level indication set determined by the terminal device, where the MCS level indication set includes at least one MCS level indication value, where the MCS level indication value is used to indicate a modulation and coding policy;
- the processor 4021 is configured to store the MCS level indication set.
- each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
- the steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software units in the processor.
- the software unit can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
- the storage medium is located in a memory, and the processor executes instructions in the memory, in combination with hardware to perform the steps of the above method. To avoid repetition, it will not be described in detail here.
- the 5G communication system is dedicated to supporting higher system performance, supporting more service types, and supporting different deployment scenarios and a wider spectrum range.
- the service types mainly include enhanced mobile broadband (eMBB) services, Massive Machine Type Communication (mMTC) services, and Ultra-reliable and low latency communications (URLLC) services.
- eMBB enhanced mobile broadband
- mMTC Massive Machine Type Communication
- URLLC Ultra-reliable and low latency communications
- MBMS Multimedia Broadcast Multicast Service
- deployment scenarios include indoor hotspot, dense urban, suburban, urban macro and high-speed rail scenes, etc.
- the wider spectral range mainly refers to the spectral range up to 100 GHz, that is, the low frequency portion below 6 GHz, and the high frequency portion above 6 GHz up to 100 GHz.
- a major feature of the 5G communication system compared to the 4G communication system is the increased support for URLLC services.
- the URLLC business includes a wide variety of services, such as industrial control, industrial production process automation, human-computer interaction and telemedicine.
- the 5G system actually provides the reference input and evaluation criteria, the 3rd Generation Partnership Project (3GPP) Radio Access Network (RAN) and RAN1
- 3GPP 3rd Generation Partnership Project
- RAN Radio Access Network
- the working group defined the performance indicators of the URLLC service as follows:
- Delay The transmission time required by the user application layer packet from the Service Data Unit (SDU) of the sender's wireless protocol stack layer 2/3 to the receiver's wireless protocol stack layer 2/3 SDU.
- SDU Service Data Unit
- the user plane delay requirement of the URLLC service is 0.5 ms for both uplink and downlink.
- the above requirements only apply to the case where the base station and the terminal are not in the discontinuous reception state (DRX). It should be pointed out that the performance requirement of 0.5ms here refers to the average delay of the data packet and is not bound to the reliability requirements described below.
- Reliability The probability of successful transmission of X bits from the sender to the receiver within a certain time (L seconds) under the given channel quality conditions.
- the above time is still defined as the user application layer packet from the sender wireless protocol.
- a typical requirement is to achieve 99.999% reliability in 1ms.
- System capacity The maximum throughput that the system can achieve without interrupting the user.
- the interruption of the user means that the system cannot meet the reliability requirements within a certain delay range.
- the terminal device indicates the channel quality between the network device and the terminal device by using a channel quality indicator (CQI) index corresponding to the BLER. Specifically, the CQI index corresponding to all the block error rates is fed back. However, in the case where the channel environment changes, the CQI index corresponding to all the block error rates of the conventional scheme is fed back, so that the signaling overhead of the feedback CQI index is relatively large.
- CQI channel quality indicator
- FIG. 20 is a schematic flowchart of a communication method according to an embodiment of the present application.
- the communication method is applied to a system supporting at least one block error rate BLER set, the first BLER set in the at least one BLER set including a first BLER subset and a second BLER subset, the first BLER subset including at least one BLER, the second BLER subset includes at least one BLER.
- the BLER in the embodiment of the present application may be of various types such as 10%, 1%, 0.1%, and 0.001%, and may be other types, which is not limited in this application.
- the first BLER set may be any one of the at least one BLER set, that is, the other BLER sets in the at least one BLER set may also include the first BLER subset and the second BLER subset. This application does not limit this.
- the terminal device determines, as the first BLER subset, a set of at least one BLER corresponding to the absolute value of the channel quality parameter that needs to be sent to the network device in each BLER set, that is, different
- the BLERs specifically included in the first BLER subset in the BLER set may be the same or different.
- the BLERs included in the first BLER set and the BLERs in the other BLER sets in the at least one BLER set may be identical or may be partially the same, or may be all different.
- the terminal device determines a channel quality parameter corresponding to each BLER in the first BLER subset.
- the terminal device may be configured to determine a channel quality parameter corresponding to each BLER in the first BLER subset in the first BLER set, or may determine, in each of the first BLER subsets in all BLER sets in the at least one BLER set included in the system.
- the channel quality parameters corresponding to the BLERs are not limited in this application.
- the channel quality parameter may be a Signal to Interference plus Noise Ratio (SINR) or a CQI index.
- SINR Signal to Interference plus Noise Ratio
- the terminal device sends, to the network device, a channel quality parameter corresponding to each BLER in the first BLER subset.
- the network device receives the channel quality parameter corresponding to each BLER in the first BLER subset sent by the terminal device.
- the network device according to the channel quality parameter corresponding to each BLER in the first BLER subset, and the channel quality parameter corresponding to the at least one BLER in the second BLER subset and the channel corresponding to the at least one BLER in the first BLER subset And determining, by the at least one channel quality parameter difference of the quality parameter, a channel quality parameter corresponding to each BLER in the second BLER subset.
- the network device may only receive the channel quality parameter corresponding to each BLER in the first BLER subset, and then according to the channel quality parameter corresponding to the at least one BLER in the second BLER subset and the at least one BLER in the first BLER subset. At least one channel quality parameter difference of the corresponding channel quality parameter may determine a channel quality parameter corresponding to at least one BLER in the second BLER subset. The channel quality parameter difference between the two BLER corresponding channel quality parameters is substantially consistent under certain conditions.
- the terminal device when the channel environment changes, can obtain the channel quality parameter corresponding to all the BLERs in the first BLER set by transmitting only the channel quality parameter corresponding to the BLER in the first BLER subset, thereby avoiding the channel quality parameter corresponding to all the BLERs in the first BLER set.
- the terminal device sends the channel quality parameters corresponding to all BLERs in the first BLER set, which saves signaling overhead.
- the determined conditions herein may be a transmission mode or a mobile speed or channel environment (eg, an urban environment or a rural environment).
- the at least one channel quality parameter difference value may be a table or a set or a value.
- the network device may determine a channel quality parameter corresponding to at least one BLER in the second BLER subset.
- the BLER of the first BLER subset may be 10%
- the BLER of the second BLER subset may be 1%, 0.1%, 0.01%, and 0.001%, as shown in Table 1.
- the network device can receive the 10% corresponding CQI sent by the terminal device, and determine CQI corresponding to each of 1%, 0.1%, 0.01%, and 0.001% according to the value and the CQI level difference in Table 1.
- the decimal number in the table indicates that the equivalent code rate converted according to the decimal number satisfies the target BLER requirement.
- the first BLER corresponds to CQI 1
- the difference between the first BLER corresponding CQI1 and the second BLER corresponding CQI2 is 0.5.
- CQI 1 corresponds to 16QAM and code rate 1 is 0.5
- CQI 1 adjacent CQI level corresponds to 16QAM and code rate 2 is 0.75
- CQI2 corresponds to 16QAM
- the code rate is 0.5+(0.75-0.5)*0.5 (code rate 1+) (code rate 2 code rate 1) * CQI level difference)
- the first BLER subset is for convenience to explain the absolute value of the feedback channel quality parameters required by these BLERs, and there is no other limitation.
- the first BLER set may include only the first BLER and the second BLER, such that the network device according to the channel quality parameter corresponding to the received first BLER, and the channel quality parameter corresponding to the first BLER and the channel quality corresponding to the second BLER
- the channel quality parameter difference of the parameter may determine a channel quality parameter corresponding to the second BLER.
- the at least one channel quality parameter difference value may be agreed by the protocol, or may be sent by the terminal device to the network device in advance, which is not limited in this application.
- the terminal device may report the at least one channel quality parameter difference periodically or in real time.
- the network device may send a channel quality parameter request to the terminal device to trigger the terminal device to report the channel quality parameter difference, thereby avoiding resource waste.
- the terminal device may only report one channel quality parameter difference, and other channel quality parameter differences are obtained by interpolation, thereby further saving signaling overhead.
- the table in the following embodiment only has the channel quality parameter difference corresponding to the two BLERs, the channel quality parameter difference of the multiple groups of BLERs can be obtained by interpolation. To avoid repetition, the following embodiments will not be described again. .
- the terminal device only reports the CQI level difference of 10% corresponding CQI and 0.001% corresponding CQI in the same channel environment. If the terminal device receives 10% of the corresponding CQI 1, the terminal device can determine 0.001% of the corresponding CQI 2 according to Table 2. The terminal device can also determine the respective CQI level difference values in Table 1 by interpolation according to 10%, 0.001%, CQI 1 and CQI 2 .
- the CQI levels corresponding to each BLER in the at least two BLER sets may be different from each other.
- the CQI level difference may be a channel quality parameter difference that is accurate to a certain SINR condition, thereby improving the channel quality parameter accuracy rate corresponding to the BLER in the second BLER subset.
- the CQI level difference values corresponding to different BLERs may be different according to different transmission methods.
- the channel quality difference between the channel qualities corresponding to the two BLERs may be different. There are multiple values, and each difference corresponds to one CQI level difference index.
- the channel quality parameter differences of the channel quality parameters corresponding to the two BLERs respectively.
- CQI level in the embodiment of the present application may be all CQI levels defined in the protocol, or a partial CQI level.
- Tables 4 and 5 only use 8 CQI levels as an example, but the application is not limited thereto. .
- the corresponding BLER set may include 10%, 1%, 0.1%, 0.01%, and 0.001%, such that the CQI level difference may be the CQI 1 in Table 5.
- the terminal device may only feedback the channel quality parameter difference of the channel quality parameter corresponding to the two BLERs in the case of partial CQI level, thereby saving signaling overhead.
- the terminal device may only feed back CQI5, CQI6, CQI7, and CQI8, the channel quality parameter difference of 10% of the channel quality parameter and 0.001% of the channel quality parameter.
- the partial CQI level may be an odd CQI level, an even CQI level, or a large granularity CQI level, or a sampled CQI level or the like.
- the sampled CQI level may be uniform sampling or non-uniform sampling. As the CQI level increases, the CQI level difference corresponding to the adjacent CQI level becomes larger and larger, and the non-uniform sampling can obtain a uniform CQI level difference, thereby saving signaling overhead.
- the at least two BLER sets may correspond to a plurality of code rates.
- the CQI level difference can be more accurate, thereby improving the channel quality parameter accuracy rate corresponding to the BLER in the second BLER subset.
- the terminal device can also feed back the CQI level difference of the CQI corresponding to the two BLERs under different code rates.
- the BLER-SINR slope values of different terminal devices are different, as shown in FIG. 21, and therefore, independent channel quality parameter differences may be used for different terminal devices.
- the BLERs in the at least two BLER sets may correspond to multiple transmission methods.
- the SINR difference can be the SINR difference in the case of a certain transmission method, thereby improving the accuracy of determining the channel quality parameter corresponding to the BLER in the second BLER subset.
- the transmission method includes an antenna port configuration and/or a multiple input multiple output (MIMO) preprocessing manner.
- MIMO multiple input multiple output
- the antenna port configuration may specifically be 1*1 (ie, one transmit port and one receive port), 1*2 or 2*2, and the like.
- the preprocessing method may include at least one of transmit diversity, precoding, and beamforming.
- MIMO includes Single Input Single Output (SISO), Single Input Multiple Output (SIMO), and Multiple Input Single Output (MISO).
- SISO Single Input Single Output
- SIMO Single Input Multiple Output
- MISO Multiple Input Single Output
- the BLER is a CQI level difference of a CQI level corresponding to 10% of the CQI level and a BLER of 0.001%.
- the CQI level difference values corresponding to different BLERs may be different according to different transmission methods. For example, as shown in Table 7 and Table 8, the channel quality between the channel qualities corresponding to the two BLERs is poor. There may be multiple values for the value.
- the network device may select an appropriate CQI level difference value according to the transmission method.
- the terminal device may further send, to the network device, indication information, where the indication information is used by the network device to determine a CQI level difference value from the plurality of CQI level difference values.
- the terminal device may send the indication information to determine one of the multiple values. To avoid repetition, the following embodiments are not described again.
- BLER CQI grade difference 10%-1% 0.5, 2.5, 3.5, 6.5 10%-0.1% 1,3,5,7 10%-0.01% 1.5, 3.5, 5.5, 7.5 10%-0.001% 2,4,6,8
- the embodiment of the present application may further divide each BLER set in the at least two BLER sets according to a CQI level and a transmission method.
- transmission method 1 and CQI 1 correspond to one BLER set.
- the modulation coding difference corresponding to the two BLERs may also be determined by the SINR difference.
- the SINR difference may also be a plurality of values as shown in Table 12 or Table 13.
- the embodiment of the present application may further divide each BLER set more specifically. For example, as shown in Table 14, Table 15, and Table 16.
- SINR difference CQI1 CQI2 CQI3 CQI4 CQI5 CQI6 CQI7 CQI8 10%-1% 0 0 0 0 0 0 0 1 10%-0.1% 0 0 0 1 1 1 2 10%-0.01% 1 1 1 2 2 2 3 10%-0.001% 1 1 1 2 2 3 3
- SINR difference CQI1 CQI2 CQI3 CQI4 CQI5 CQI6 CQI7 CQI8 10%-1% [0,1] [0,1] [0,1] [0,1] [0,1] [0,1] [1,2] [1,2] [1,2] [2,3] 10%-0.01% [1,2] [1,2] [1,2] [2,3] [2,3] [2,3] [2,3] [2,3] [3,4] 10%-0.001% [1,2] [1,2] [1,2] [2,3] [2,3] [2,3] [2,3] [2,3] [3,4]
- the BLER set in the at least one BLER set may correspond to multiple transmission methods.
- Table 17 shows the SINR difference values corresponding to the two BLERs in the case of different transmission methods
- Table 18 can indicate the SINR difference values corresponding to the two BLERs in the case of other conditions.
- each BLER set in the at least one BLER set may be partitioned according to a transmission method and a CQI level. For example, as shown in Table 19 and Table 20.
- the terminal device may further send an index value of the channel quality parameter difference value to the network device, where the index value of the channel quality parameter difference value corresponds to the channel quality parameter difference value.
- the network device may determine a corresponding channel quality parameter difference according to an index value of the channel quality parameter difference.
- the network device can learn the difference between the channel quality parameters of the channel quality parameters corresponding to the two BLERs, but cannot specifically know which difference is the difference between the channel quality parameters corresponding to the current two BLERs.
- the network device may determine, according to an index value of a channel quality parameter difference value sent by the terminal device, that a channel quality parameter difference is specifically a plurality of differences between channel quality parameters corresponding to two BLERs. Which one, so that each BLER corresponding channel quality parameter in the second BLER subset can be accurately determined, and the accuracy of determining the channel quality is improved.
- the CQI level difference value reported by the terminal device may be represented by a CQI index.
- the correspondence between the CQI level difference value and the CQI level difference index is as shown in Table 21.
- the terminal device may send the CQI level difference index to the network device as 3, so that the network device may determine according to the index 3 of the CQI level difference value.
- the difference between the CBRI levels of the two BELRs is 4.
- the network device sends a channel quality parameter request to the terminal device, where the channel quality parameter request may be used to request channel quality corresponding to each BLER in the second BLER subset in the BLER set in the at least one BLER set included in the system. At least one channel quality parameter difference of the channel quality parameter corresponding to the at least one BLER in the first BLER subset.
- the terminal device reports, according to the channel quality parameter request, the at least one channel quality parameter difference requested by the channel quality parameter request to the network device.
- the network device may carry the channel quality parameter request by using high layer signaling or physical layer signaling.
- the network device may carry, by using the high layer signaling or the physical layer signaling, at least the channel quality parameter corresponding to each BLER in the second BLER subset in the first BLER set and the channel quality parameter corresponding to the at least one BLER in the first BLER subset.
- the channel quality parameter request may further request a specific number of channel quality parameter differences corresponding to the at least one BLER.
- the channel quality parameter request can request 4 SINR values, the CLER level difference corresponding to the BLER.
- the network device may request a channel quality parameter difference between BLERs in a partial BLER set in the system by using a channel quality parameter request.
- the network device sends a channel quality parameter request to the terminal device, where the channel quality parameter request may be used to request channel quality corresponding to the at least one BLER in the first BLER subset in each BLER set in the at least one BLER set.
- the terminal device reports, according to the channel quality parameter request, the at least one channel quality parameter difference requested by the channel quality parameter request to the network device.
- the network device may carry the channel quality parameter request by using high layer signaling or physical layer signaling, or report all CQI level difference sets by semi-static configuration.
- the network device may receive the channel quality parameter corresponding to the BLER in the first BLER subset in the first BLER set sent by the terminal device, and according to the first BLER subset.
- the channel quality parameter corresponding to the partial BLER and the channel quality parameter corresponding to each BLER in the second BLER subset and the channel quality parameter difference of the channel quality parameter corresponding to the at least one BLER in the first BELR subset determine the second BLER
- the channel quality parameter corresponding to all the BLERs in the subset that is, the network device can determine the channel quality parameters corresponding to all the BLERs in the first BLER set, without the terminal equipment sending the channel quality parameters corresponding to all the BLERs in the first BLER set, saving The signaling overhead.
- Table 22 shows the correspondence between the CQI index value and the spectral efficiency (Efficiency) in the conventional scheme.
- the conventional scheme can represent 16 states by 4 bits, and the spectral efficiency corresponding to the CQI index is at least 0.1523, that is, the main channel condition interval of the user can be covered.
- FIG. 22 is a schematic flowchart of a communication method according to an embodiment of the present application.
- the terminal device determines, according to the correspondence table, the indication information, where the indication information is used to indicate at least one channel quality indicator CQI index value, where the correspondence relationship table includes N CQI index values, M modulation modes, and K code rate parameters. And at least one CQI index value of the N CQI index values corresponds to a modulation mode, where K CQI index values of the N CQI index values are in one-to-one corresponding to the K code rate parameters, and the N
- the N CQIs are used. There is a CQI index value in the index value, which is not specific.
- the correspondence table may be as shown in Table 23, and the CQI index value may correspond to a reserved value.
- the channel quality indication information may include a bit number greater than 4, that is, the value of the bit may represent a number of states greater than 16.
- 32 states are represented by 5 bits, which may include a reserved state.
- spectral efficiency of less than 0.0781 in the embodiment of the present application may also be other values than those in Table 13, which is not limited in this application.
- the K code rate parameters include values greater than 0 and less than 40.
- the code rate value may be 16, 8, or 4 or the like. It should be understood that the value of the code rate in the embodiment of the present application is greater than 0, and the value of less than 40 may be other values, which is not limited in this application.
- the N CQI index values in the correspondence table are arranged in a descending order, and the modulation mode corresponding to each CQI index value of the first P CQI index values in the N CQI index values is The product of the modulation order and the corresponding code rate is arranged in descending order, and the product of the modulation order of the P+h CQI index value and the corresponding code rate is smaller than the Pth CQI index value.
- the modulation factor of the modulation mode is the product of the corresponding code rate, N>P+h, and h is taken from 1 to NX, X>P.
- the spectral efficiency of the CQI index value corresponding to less than 0.0781 may be sorted after the maximum spectral efficiency, so that the terminal device may determine the number of bits included in the channel quality indication information according to requirements.
- the spectral efficiency corresponding to the sequentially arranged CQI index values after the Pth CQI index value may be arranged in order from small to large.
- the spectral efficiency corresponding to the CQI index value shown in Table 24 is gradually decreasing as the CQI index value increases, that is, from 0.0039 to 0.0781.
- the correspondence table may also select a part from the above table, that is, the total number of states is reduced, thereby saving signaling overhead. For example, as shown in Table 25 and Table 26.
- the network device may send the high-level signaling to the terminal device, where the high-level signaling indicates the correspondence table.
- the terminal device and the network device may agree to form, Table 23, Table 24, Table 25, or Table 26.
- the device may determine the adopted form according to the service or channel environment, and send the high-level signaling to indicate which corresponding relationship table is adopted.
- the terminal device and the network device may agree to a default form or a partial correspondence in a table. If the network device determines that the channel quality indication range needs to be changed, that is, only one of the plurality of tables or a certain part of the table is required, the high-level signaling is sent to the terminal device to indicate a certain correspondence in a certain table or table. . In this way, when the terminal device uses the table indicated by the network device, the indication requirement of the current channel environment can be satisfied, and the signaling overhead can also be saved.
- the terminal device sends the indication information to the network device. Accordingly, the network device receives the indication information. 2203. The network device determines, according to the indication information, a modulation and coding manner corresponding to the at least one CQI index value.
- the network device may determine, according to the at least one CQI index value indicated by the indication information, and the correspondence table, a modulation code corresponding to the at least one CQI index value.
- the network device may determine each element in the correspondence table according to the protocol agreement, or determine each element in the correspondence table according to the correspondence table previously configured to the terminal.
- the at least two CQI index values correspond to at least two modulation modes one by one.
- the modulation mode corresponding to all CQI indexes of the correspondence table is the most modulated by QPSK, or the modulation mode of 64QAM is the most, or the modulation mode of 256QAM is included.
- the table 27 covers medium and low SINR (i.e., more QPSK), and can cover 64QAM, and has a wide application range.
- the table 28 covers the low, medium, and high SINR (i.e., the primary SINR), i.e., has a high CQI level corresponding to a high SINR, and a lower CQI level corresponds to a low SINR. In other words, it can guarantee the transmission efficiency of the user and ensure the robust transmission of the user.
- the primary SINR i.e., the primary SINR
- the table 29 covers the 6-high SINR, the CQI level is sparse in the low SINR interval, and the CQI level is rich in the high SINR interval, which is suitable for users with better channel quality and improves transmission efficiency.
- the network device may determine, according to a protocol agreement, a correspondence between each CQI index value and a modulation mode in Table 27, Table 28, and Table 29; or the network device configures Table 27, Table 28, and Table 29 in advance to the terminal device. The correspondence between each CQI index value and the modulation mode.
- the modulation method that is, the present application can be applied
- FIG. 23 is a schematic flowchart of a communication method according to an embodiment of the present application.
- MCS Modulation and Coding Scheme
- MCS Index Modulation method Code rate*1024 0 2 4 1 2 8 2 2 16 3 2 32 4 2 78 5 2 193 6 2 449 7 4 378 8 434 9 4 490 10 4 553 11 4 658 12 8 797 13 8 948
- the K code rate parameters include values greater than 0 and less than 40.
- the N MCS index values in the correspondence table are arranged in a descending order, and the spectrum efficiency of the first P MCS index values in the N MCS index values is in descending order.
- MCS Index Modulation method Code rate*1024 0 2 120 1 2 193 2 2 308 3 2 449 4 2 602 5 4 378 6 434 7 4 490 8 4 553 9 4 616 10 4 658 11 6 466 12 6 517
- the terminal device receives the indication information sent by the network device.
- the terminal device determines, according to the correspondence table, a modulation and coding manner corresponding to the at least one MCS index value.
- the network device determines, according to the correspondence table, indication information, where the indication information is used to indicate at least one channel quality indicator MCS index value, where the correspondence relationship table includes N MCS index values, M modulations.
- Mode and K code rate parameters and at least one of the N MCS index values corresponds to a modulation mode, and K MCS index values of the N MCS index values correspond to the K one-to-one a code rate parameter, a product of a code rate corresponding to a first MCS index value of the N MCS index values and a modulation order of a modulation mode corresponding to the first MCS index value is greater than 0 and less than 0.0781,
- Corresponding modulation mode that is, the present application can be applied to a system with a spectral efficiency requirement lower than 0.0781, that is, covering a bad channel condition area, and ensuring that the user communicates under the deep fading channel.
- FIG. 24 shows a schematic block diagram of a network device 2400 in accordance with an embodiment of the present application.
- the network device 2400 includes:
- the receiving module 2410 is configured to receive a channel quality parameter corresponding to each BLER in the first BLER subset sent by the terminal device, where the channel quality parameter is used to indicate channel quality between the terminal device and the network device ;
- the processing module 2420 is configured to determine, according to the at least one channel quality parameter difference value and the channel quality parameter corresponding to the at least one BLER in the first BLER subset, a channel quality parameter corresponding to the at least one BLER in the second BLER subset.
- the at least one channel quality parameter difference value includes a difference between a channel quality parameter corresponding to at least one BLER in the second BLER subset and a channel quality parameter corresponding to at least one BLER in the first BLER subset.
- the network device 2400 further includes: a sending module, configured to send a channel quality parameter request to the terminal device, where the channel quality parameter request is used to request a second BLER subset in the first BLER set At least one channel quality parameter of the at least one BLER corresponding channel quality parameter and at least one channel quality parameter of the channel quality parameter corresponding to the at least one BLER in the first BLER subset in the first BLER set; the receiving module 2410 is further configured to: Receiving at least one channel of a channel quality parameter corresponding to at least one BLER in the second BLER subset in the first BLER set and a channel quality parameter corresponding to at least one BLER in the first BLER subset in the first BLER set The difference in quality parameters.
- a sending module configured to send a channel quality parameter request to the terminal device, where the channel quality parameter request is used to request a second BLER subset in the first BLER set At least one channel quality parameter of the at least one BLER corresponding channel quality parameter and at least one channel quality parameter of the channel quality parameter corresponding
- the network device 2400 further includes: a sending module, configured to send a channel quality parameter request to the terminal device, where the channel quality parameter request is used to request each BLER set in the at least one BLER set a channel quality parameter difference between a channel quality parameter corresponding to at least one BLER in the second BLER subset and a channel quality parameter corresponding to at least one BLER in the first BLER subset; the receiving module 2410 is further configured to receive the at least A channel quality parameter difference between a channel quality parameter corresponding to at least one BLER in the second BLER subset in each BLER set and a channel quality parameter corresponding to at least one BLER in the second BLER subset.
- a sending module configured to send a channel quality parameter request to the terminal device, where the channel quality parameter request is used to request each BLER set in the at least one BLER set a channel quality parameter difference between a channel quality parameter corresponding to at least one BLER in the second BLER subset and a channel quality parameter corresponding to at least one BLER in the first BLER subset
- the transmission methods corresponding to any two BLER sets in the at least two BLER sets are different.
- the transmission method comprises an antenna port configuration and/or a multiple input multiple output MIMO preprocessing mode.
- the network device in the embodiment of the present application may receive the channel quality parameter corresponding to the BLER in the first BLER subset in the first BLER set sent by the terminal device, and according to the channel quality parameter corresponding to the partial BLER in the first BLER subset.
- the quality parameter that is, the network device can determine the channel quality parameter corresponding to all the BLERs in the first BLER set, without requiring the terminal device to send the channel quality parameters corresponding to all BLERs in the first BLER set, thereby saving signaling overhead.
- the network device 2400 may correspond to the network device in the method 2000 for data transmission of the embodiment of the present application, and the above and other management operations and/or functions of the respective modules in the network device 2400.
- the network device 2400 may correspond to the network device in the method 2000 for data transmission of the embodiment of the present application, and the above and other management operations and/or functions of the respective modules in the network device 2400.
- the receiving module 2410 in the embodiment of the present application may be implemented by a transceiver, and the processing module 2420 may be implemented by a processor.
- network device 2500 can include a transceiver 2510, a processor 2520, and a memory 2530.
- the memory 2530 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 2520.
- FIG. 26 shows a schematic block diagram of a terminal device 2600 according to an embodiment of the present application.
- the terminal device 2600 is applied to a system supporting at least one block error rate BLER set, where each BLER set in the at least one BLER set includes a first BLER subset and a second BLER subset.
- the first BLER subset includes at least one BLER
- the second BLER subset includes at least one BLER
- the terminal device 2600 includes:
- the processing module 2610 is configured to determine a channel quality parameter corresponding to each BLER in the first BLER subset, where the channel quality parameter is used to indicate channel quality between the terminal device and the network device.
- the sending module 2620 is configured to send, to the network device, a channel quality parameter corresponding to each BLER in the first BLER subset, so that the network device according to the at least one channel quality parameter difference and the first BLER sub
- the channel quality parameter corresponding to the at least one BLER in the centralized group determines a channel quality parameter corresponding to the at least one BLER in the second BLER subset, where the at least one channel quality parameter difference value includes a channel corresponding to the at least one BLER in the second BLER subset A difference between a quality parameter and a channel quality parameter corresponding to at least one BLER in the first BLER subset.
- the terminal device 2600 further includes: a receiving module, configured to receive a channel quality parameter request sent by the network device, where the channel quality parameter request is used to request a second BLER subset in the first BLER set At least one channel quality parameter corresponding to at least one BLER corresponding channel quality parameter and at least one channel quality parameter corresponding to at least one BLER in the first BLER subset in the first BLER set; the processing module 2610 is further configured to perform The channel quality parameter request sends, to the network device, at least one channel quality parameter corresponding to at least one BLER in the second BLER subset in the first BLER set and at least one in the first BLER subset in the first BLER set At least one channel quality parameter difference of the channel quality parameter corresponding to the BLER.
- a receiving module configured to receive a channel quality parameter request sent by the network device, where the channel quality parameter request is used to request a second BLER subset in the first BLER set At least one channel quality parameter corresponding to at least one BLER corresponding channel quality parameter and at least one channel quality
- the terminal device 2600 further includes: a receiving module, configured to receive a channel quality parameter request sent by the network device, where the channel quality parameter request is used to request, in each BLER set in the at least one BLER set a channel quality parameter difference between a channel quality parameter corresponding to at least one BLER in the second BLER subset and a channel quality parameter corresponding to at least one BLER in the first BLER subset; the processing module 2610 is further configured to use the channel quality parameter according to the channel quality parameter And transmitting, to the network device, a channel quality parameter corresponding to at least one BLER in a second BLER subset in each BLER set in the at least one BLER set and a channel quality parameter corresponding to at least one BLER in the second BLER subset Channel quality parameter difference.
- a receiving module configured to receive a channel quality parameter request sent by the network device, where the channel quality parameter request is used to request, in each BLER set in the at least one BLER set a channel quality parameter difference between a channel quality parameter corresponding to at least one B
- any two BLER sets in the at least two BLER sets have different CQI levels.
- the transmission methods corresponding to any two BLER sets in the at least two BLER sets are different.
- the transmission method comprises an antenna port configuration and/or a multiple input multiple output MIMO preprocessing mode.
- the terminal device in the embodiment of the present application sends the channel quality parameter corresponding to each BLER in the first BLER subset in the first BLER set, and according to the channel quality parameter corresponding to the partial BLER in the first BLER subset and the second BLER.
- the channel quality parameter difference between the channel quality parameter corresponding to each BLER in the subset and the channel quality parameter corresponding to the at least one BLER in the first BELR subset determines a channel quality parameter corresponding to all BLERs in the second BLER subset, ie
- the network device can determine the channel quality parameter corresponding to all the BLERs in the first BLER set, and does not need the terminal device to send the channel quality parameter corresponding to all the BLERs in the first BLER set, thereby saving signaling overhead.
- terminal device 2600 may correspond to the terminal device in the method 2000 for data transmission of the embodiment of the present application, and the above and other management operations and/or other management operations of the respective modules in the terminal device 2600
- the functions are respectively implemented in order to implement the corresponding steps of the foregoing various methods, and are not described herein for brevity.
- the sending module 2620 in the embodiment of the present application may be implemented by a transceiver, and the processing module 2610 may be implemented by a processor.
- the terminal device 2700 may include a transceiver 2710, a processor 2720, and a memory 2730.
- the memory 2730 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 2720.
- processor 2520 or processor 2720 can be an integrated circuit chip with signal processing capabilities.
- each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
- the processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
- the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
- the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
- the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
- the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
- the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
- the memory 2530 or the memory 2730 in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
- the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
- the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
- RAM Random Access Memory
- many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Synchronous Link DRAM (Synchronous Link DRAM) SLDRAM) and Direct Memory Bus Random Access Memory (DR RAM).
- memories of the systems and methods described herein are intended to comprise, without being limited to, these and any other suitable types of memory.
- the embodiment of the present application further provides a system chip, where the system chip includes an input and output interface, at least one processor, at least one memory, and a bus, the at least one memory is configured to store an instruction, and the at least one processor is configured to invoke the at least one
- the instructions of the memory are operative to perform the methods of the various embodiments described above.
- FIG. 28 shows a system 2800 for resource allocation in an embodiment of the present application, the system 2800 including:
- the embodiment of the present application further provides a computer storage medium, which can store program instructions for indicating any of the above methods.
- the storage medium may be specifically a memory 2530 or 2730.
- FIG. 29 shows a schematic block diagram of a terminal device 2900 according to an embodiment of the present application.
- the terminal device 2900 includes:
- the processing module 2910 is configured to determine, according to the correspondence relationship table, indication information, where the indication information is used to indicate at least one channel quality indicator CQI index value, where the correspondence relationship table includes N CQI index values, M modulation modes, and K code rates.
- a parameter, and at least one CQI index value of the N CQI index values corresponds to a modulation mode, where K CQI index values of the N CQI index values are in one-to-one corresponding to the K code rate parameters,
- the sending module 2920 is configured to send the indication information to the network device.
- the K code rate parameters include values greater than 0 and less than 40.
- the N CQI index values in the correspondence table are arranged in a descending order, and the modulation mode corresponding to each CQI index value of the first P CQI index values in the N CQI index values is The product of the modulation order and the corresponding code rate is arranged in descending order, and the product of the modulation order of the P+h CQI index value and the corresponding code rate is smaller than the Pth CQI index value.
- the modulation factor of the modulation mode is the product of the corresponding code rate, N>P+h, and h is taken from 1 to NX, X>P.
- the terminal device in the embodiment of the present application determines the indication information according to the correspondence relationship table, where the indication information is used to indicate at least one channel quality indicator CQI index value, where the correspondence relationship table includes N CQI index values, M modulation modes, and K a code rate parameter, and at least one CQI index value of the N CQI index values corresponds to a modulation mode, and K CQI index values of the N CQI index values are in one-to-one corresponding to the K code rate parameters
- the application can be applied to a system with a
- terminal device 2900 may correspond to the terminal device in the communication method 2200 of the embodiment of the present application, and the foregoing and other management operations and/or functions of the respective modules in the terminal device 2900 are respectively implemented. The corresponding steps of the foregoing various methods are not described herein for brevity.
- the sending module 2920 in the embodiment of the present application may be implemented by a transceiver, and the processing module 2910 may be implemented by a processor.
- the terminal device 3000 may include a transceiver 3010, a processor 3020, and a memory 3030.
- the memory 3030 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 3020.
- FIG. 31 shows a schematic block diagram of a network device 3100 according to an embodiment of the present application.
- the network device 3100 includes:
- the receiving module 3110 is configured to receive indication information, where the indication information is used to indicate at least one channel quality indicator CQI index value;
- the processing module 3120 is configured to determine, according to the correspondence table, a modulation and coding mode corresponding to the at least one CQI index value, where the correspondence relationship table includes N CQI index values, M modulation modes, and K code rate parameters, and the At least one CQI index value of the N CQI index values corresponds to a modulation mode, and K CQI index values of the N CQI index values are in one-to-one corresponding to the K code rate parameters, and the N CQI index values
- the K code rate parameters include values greater than 0 and less than 40.
- the N CQI index values in the correspondence table are arranged in a descending order, and the modulation mode corresponding to each CQI index value of the first P CQI index values in the N CQI index values is
- the product of the modulation order and the corresponding code rate parameter is arranged in descending order, and the product of the modulation order of the P+h CQI index value and the corresponding code rate parameter is smaller than the Pth CQI index.
- the product of the modulation order of the modulation mode corresponding to the value and the corresponding code rate parameter, N>P+h, and h is taken from 1 to NX, X>P.
- the network device in the embodiment of the present application receives the indication information, and determines, according to the correspondence relationship table, a modulation mode corresponding to the at least one CQI index value, where the correspondence relationship table includes N CQI index values, M modulation modes, and K codes.
- Rate parameter, and at least one CQI index value of the N CQI index values corresponds to a modulation mode, and K CQI index values of the N CQI index values are in one-to-one correspondence with the K code rate parameters.
- the network device 3100 may correspond to the network device in the communication method 2200 of the embodiment of the present application, and the foregoing and other management operations and/or functions of the respective modules in the network device 3100 respectively implement the foregoing The corresponding steps of each method are not repeated here for brevity.
- the receiving module 3110 in the embodiment of the present application may be implemented by a transceiver, and the processing module 3120 may be implemented by a processor.
- network device 3200 can include a transceiver 3210, a processor 3220, and a memory 3230.
- the memory 3230 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 3220.
- processor 3020 or processor 3220 can be an integrated circuit chip with signal processing capabilities.
- each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
- the processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
- the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
- the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
- the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
- the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
- the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
- the memory 3030 or the memory 3230 in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
- the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
- the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
- RAM Random Access Memory
- many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Synchronous Link DRAM (Synchronous Link DRAM) SLDRAM) and Direct Memory Bus Random Access Memory (DR RAM).
- memories of the systems and methods described herein are intended to comprise, without being limited to, these and any other suitable types of memory.
- the embodiment of the present application further provides a system chip, where the system chip includes an input and output interface, at least one processor, at least one memory, and a bus, the at least one memory is configured to store an instruction, and the at least one processor is configured to invoke the at least one
- the instructions of the memory are operative to perform the methods of the various embodiments described above.
- FIG. 33 shows a system 3300 for resource allocation according to an embodiment of the present application.
- the system 3300 includes:
- the embodiment of the present application further provides a computer storage medium, which can store program instructions for indicating any of the above methods.
- the storage medium may be specifically a memory 3030 or 3230.
- the disclosed systems, devices, and methods may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
- the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
- the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .
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Abstract
Description
50% | 80% | 95% | |
中间用户 | 0.8dB | 1.2dB | 1.7dB |
边缘用户 | 0.9dB | 2dB | 4.3dB |
UCI比特 | CQI的差分指示值 |
00 | -1 |
01 | 0 |
10 | 1 |
11 | 2 |
BLER | CQI等级差值 | SINR差值 |
10%-1% | 0.5 | 0.5 |
10%-0.1% | 1 | 1 |
10%-0.01% | 1.5 | 1.5 |
10%-0.001% | 2 | 2 |
BLER | CQI等级差值 |
10%-0.001% | 2 |
CQI等级差值 | CQI1 | CQI2 | CQI3 | CQI4 | CQI5 | CQI6 | CQI7 | CQI8 |
10%-0.001% | 2 | 2 | 2 | 2 | 2 | 3 | 3.5 | 4 |
CQI等级差值 | CQI1 | CQI2 | CQI3 | CQI4 | CQI5 | CQI6 | CQI7 | CQI8 |
10%-1% | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.8 | 0.5 | 0.9 |
1%-0.1% | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.8 | 0.8 | 1 |
0.1%-0.01% | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.8 | 1 | 1 |
0.01%-0.001% | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.8 | 1 | 1 |
CQI等级差值 | 传输方法1 | 传输方法2 |
10%-0.001% | 1 | 3 |
BLER | CQI等级差值 |
10%-0.001% | 1,2,3,4 |
BLER | CQI等级差值 |
10%-1% | 0.5,2.5,3.5,6.5 |
10%-0.1% | 1,3,5,7 |
10%-0.01% | 1.5,3.5,5.5,7.5 |
10%-0.001% | 2,4,6,8 |
BLER | SINR差值 |
10%-0.001% | 4 |
BLER | SINR差值 |
10%-1% | 0 |
10%-0.1% | 1 |
10%-0.01% | 2 |
10%-0.001% | 4 |
BLER | SINR差值 |
10%-0.001% | 1,2,4,6,8 |
BLER | SINR差值 |
10%-1% | 0,1 |
10%-0.1% | 1,2 |
10%-0.01% | 1,2,3 |
10%-0.001% | 2,3,4 |
SINR差值 | CQI1 | CQI2 | CQI3 | CQI4 | CQI5 | CQI6 | CQI7 | CQI8 |
10%-1% | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
1%-0.1% | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 |
0.1%-0.01% | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 |
0.01%-0.001% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
SINR差值 | CQI1 | CQI2 | CQI3 | CQI4 | CQI5 | CQI6 | CQI7 | CQI8 |
10%-1% | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
10%-0.1% | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 |
10%-0.01% | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 |
10%-0.001% | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 |
SINR差值 | CQI1 | CQI2 | CQI3 | CQI4 | CQI5 | CQI6 | CQI7 | CQI8 |
10%-1% | [0,1] | [0,1] | [0,1] | [0,1] | [0,1] | [0,1] | [0,1] | [1,2] |
10%-0.1% | [0,1] | [0,1] | [0,1] | [1,2] | [1,2] | [1,2] | [1,2] | [2,3] |
10%-0.01% | [1,2] | [1,2] | [1,2] | [2,3] | [2,3] | [2,3] | [2,3] | [3,4] |
10%-0.001% | [1,2] | [1,2] | [1,2] | [2,3] | [2,3] | [2,3] | [2,3] | [3,4] |
SINR差值 | 传输方法1 | 传输方法2 |
10%-0.001% | 2 | 5 |
SINR差值 | 传输方法1 | 传输方法2 |
10%-0.001% | 2,4 | 5,7 |
CQI等级差值的索引 | 0 | 1 | 2 | 3 |
CQI等级差值 | 0 | 1 | 2 | 4 |
MCS Index | 调制方式(Modulation) | 码率(code rate)*1024 |
0 | 2 | 4 |
1 | 2 | 8 |
2 | 2 | 16 |
3 | 2 | 32 |
4 | 2 | 78 |
5 | 2 | 193 |
6 | 2 | 449 |
7 | 4 | 378 |
8 | 4 | 434 |
9 | 4 | 490 |
10 | 4 | 553 |
11 | 4 | 658 |
12 | 8 | 797 |
13 | 8 | 948 |
MCS Index | 调制方式(Modulation) | 码率(code rate)*1024 |
0 | 2 | 120 |
1 | 2 | 193 |
2 | 2 | 308 |
3 | 2 | 449 |
4 | 2 | 602 |
5 | 4 | 378 |
6 | 4 | 434 |
7 | 4 | 490 |
8 | 4 | 553 |
9 | 4 | 616 |
10 | 4 | 658 |
11 | 6 | 466 |
12 | 6 | 517 |
13 | 6 | 567 |
14 | 6 | 616 |
15 | 6 | 666 |
16 | 6 | 719 |
17 | 6 | 772 |
18 | 6 | 822 |
19 | 6 | 873 |
20 | 8 | 683 |
21 | 8 | 711 |
22 | 8 | 754 |
23 | 8 | 797 |
24 | 8 | 841 |
25 | 8 | 885 |
26 | 8 | 917 |
27 | 8 | 948 |
28 | 2 | reserved |
29 | 4 | reserved |
30 | 6 | reserved |
31 | 8 | reserved |
32 | 2 | 2 |
33 | 2 | 3 |
34 | 2 | 4 |
35 | 2 | 6 |
36 | 2 | 8 |
37 | 2 | 12 |
38 | 2 | 16 |
39 | 2 | 28 |
40 | 2 | 40 |
41 | 2 | 56 |
42-63 | Reserved |
Claims (23)
- 一种通信方法,其特征在于,包括:根据对应关系表确定指示信息,所述指示信息用于指示至少一个信道质量指示CQI索引值,所述对应关系表包括N个CQI索引值、M个调制方式和K个码率参数,且所述N个CQI索引值中的至少一个CQI索引值对应一种调制方式,所述N个CQI索引值中的K个CQI索引值一一对应所述K个码率参数,所述N个CQI索引值中的第一CQI索引值对应的码率与所述第一CQI索引值对应的调制方式的调制阶数的乘积为大于0且小于0.0781的值,其中,码率参数=码率*1024,N>M,N≥K,且N、K和M均为正整数;向网络设备发送所述指示信息。
- 根据权利要求1所述的通信方法,其特征在于,所述K个码率参数包括大于0,且小于40的值。
- 根据权利要求1或2所述的通信方法,其特征在于,所述N个CQI索引值对应至少三种调制方式,所述至少三种调制方式中QPSK的数量大于所述至少三种调制方式中其他任一种调制方式的数量。
- 一种通信方法,其特征在于,包括:接收指示信息,所述指示信息用于指示至少一个信道质量指示CQI索引值;根据对应关系表确定所述至少一个CQI索引值对应的调制编码方式,所述对应关系表包括N个CQI索引值、M个调制方式和K个码率参数,且所述N个CQI索引值中的至少一个CQI索引值对应一种调制方式,所述N个CQI索引值中的K个CQI索引值一一对应所述K个码率参数,所述N个CQI索引值中的第一CQI索引值对应的码率参数与所述第一CQI索引值对应的调制方式的调制阶数的乘积为大于0且小于0.0781的值,其中,码率参数=码率*1024,N>M,N≥K,且N、K和M均为正整数。
- 根据权利要求4所述的通信方法,其特征在于,所述K个码率参数包括大于0,且小于40的值。
- 根据权利要求4或5所述的通信方法,其特征在于,所述N个CQI索引值对应至少三种调制方式,所述至少三种调制方式中QPSK的数量大于所述至少三种调制方式中其他任一种调制方式的数量。
- 一种通信方法,其特征在于,所述通信方法包括:根据对应关系表确定指示信息,所述指示信息用于指示至少一个调制编码方式MCS索引值,所述对应关系表包括N个MCS索引值、M个调制方式和K个码率参数,且所述N个MCS索引值中的至少一个MCS索引值对应一种调制方式,所述N个MCS索引值中的K个MCS索引值一一对应所述K个码率参数,所述N个MCS索引值中的第一MCS索引值对应的码率与所述第一MCS索引值对应的调制方式的调制阶数的乘积为大于0且小于0.0781的值,其中,码率参数=码率*1024,N>M,N≥K,且N、K和M均为正整数;发送所述指示信息。
- [根据细则91更正 08.10.2018]
根据权利要求7所述的通信方法,其特征在于,所述K个码率参数包括大于0,且小 于40的值。 - 一种通信方法,其特征在于,包括:接收指示信息,所述指示信息用于指示至少一个调制编码方案MCS索引值;根据对应关系表确定所述至少一个MCS索引值对应的调制编码方式,所述对应关系表包括N个MCS索引值、M个调制方式和K个码率参数,且所述N个MCS索引值中的至少一个MCS索引值对应一种调制方式,所述N个MCS索引值中的K个MCS索引值一一对应所述K个码率参数,所述N个MCS索引值中的第一CQI索引值对应的码率参数与所述第一MCS索引值对应的调制方式的调制阶数的乘积为大于0且小于0.0781的值,其中,码率参数=码率*1024,N>M,N≥K,且N、K和M均为正整数。
- 根据权利要求9所述的通信方法,其特征在于,所述K个码率参数包括大于0,且小于40的值。
- 一种通信装置,其特征在于,包括:处理模块,用于根据对应关系表确定指示信息,所述指示信息用于指示至少一个信道质量指示CQI索引值,所述对应关系表包括N个CQI索引值、M个调制方式和K个码率参数,且所述N个CQI索引值中的至少一个CQI索引值对应一种调制方式,所述N个CQI索引值中的K个CQI索引值一一对应所述K个码率参数,所述N个CQI索引值中的第一CQI索引值对应的码率与所述第一CQI索引值对应的调制方式的调制阶数的乘积为大于0且小于0.0781的值,其中,码率参数=码率*1024,N>M,N≥K,且N、K和M均为正整数;收发模块,用于向网络设备发送所述指示信息。
- 根据权利要求11所述的通信装置,其特征在于,所述K个码率参数包括大于0且小于40的值。
- 根据权利要求11或12所述的通信装置,其特征在于,所述N个CQI索引值对应至少三种调制方式,所述至少三种调制方式中QPSK的数量大于所述至少三种调制方式中其他任一种调制方式的数量。
- 一种通信装置,其特征在于,包括:收发模块,用于接收指示信息,所述指示信息用于指示至少一个信道质量指示CQI索引值;处理模块,用于根据对应关系表确定所述至少一个CQI索引值对应的调制编码方式,所述对应关系表包括N个CQI索引值、M个调制方式和K个码率参数,且所述N个CQI索引值中的至少一个CQI索引值对应一种调制方式,所述N个CQI索引值中的K个CQI索引值一一对应所述K个码率参数,所述N个CQI索引值中的第一CQI索引值对应的码率参数与所述第一CQI索引值对应的调制方式的调制阶数的乘积为大于0且小于0.0781的值,其中,码率参数=码率*1024,N>M,N≥K,且N、K和M均为正整数。
- 根据权利要求14所述的通信装置,其特征在于,所述K个码率参数包括大于0且小于40的值。
- 根据权利要求14或15所述的通信装置,其特征在于,所述N个CQI索引值对应至少三种调制方式,所述至少三种调制方式中QPSK的数量大于所述至少三种调制方式中其他任一种调制方式的数量。
- 一种通信装置,其特征在于,包括:处理模块,用于根据对应关系表确定指示信息,所述指示信息用于指示至少一个调制编码方式MCS索引值,所述对应关系表包括N个MCS索引值、M个调制方式和K个码率参数,且所述N个MCS索引值中的至少一个MCS索引值对应一种调制方式,所述N个MCS索引值中的K个MCS索引值一一对应所述K个码率参数,所述N个MCS索引值中的第一MCS索引值对应的码率与所述第一MCS索引值对应的调制方式的调制阶数的乘积为大于0且小于0.0781的值,其中,码率参数=码率*1024,N>M,N≥K,且N、K和M均为正整数;收发模块,用于发送所述指示信息。
- [根据细则91更正 08.10.2018]
根据权利要求17所述的通信装置,其特征在于,所述K个码率参数包括大于0且小于40的值。 - 一种通信装置,其特征在于,包括:收发模块,用于接收指示信息,所述指示信息用于指示至少一个调制编码方案MCS索引值;处理模块,用于根据对应关系表确定所述至少一个MCS索引值对应的调制编码方式,所述对应关系表包括N个MCS索引值、M个调制方式和K个码率参数,且所述N个MCS索引值中的至少一个MCS索引值对应一种调制方式,所述N个MCS索引值中的K个MCS索引值一一对应所述K个码率参数,所述N个MCS索引值中的第一CQI索引值对应的码率参数与所述第一MCS索引值对应的调制方式的调制阶数的乘积为大于0且小于0.0781的值,其中,码率参数=码率*1024,N>M,N≥K,且N、K和M均为正整数。
- 根据权利要求19所述的通信装置,其特征在于,所述K个码率参数包括大于0且小于40的值。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有指令,当其在计算机上运行时,使得计算机执行权利要求1至10中任一项权利要求所述的方法。
- 一种计算机程序产品,其特征在于,当其在计算机上运行时,使得计算机执行权利要求1至10中任一项所述的方法。
- 一种芯片系统,其特征在于,包括存储器和处理器,所述存储器用于存储计算机程序,所述处理器用于从所述存储器中调用并运行所述计算机程序,使得设置有所述芯片的通信设备执行如权利要求1-10中任一项所述的方法。
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