WO2019096284A1 - Procédé de signalement d'informations de couche, et terminal - Google Patents

Procédé de signalement d'informations de couche, et terminal Download PDF

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Publication number
WO2019096284A1
WO2019096284A1 PCT/CN2018/116062 CN2018116062W WO2019096284A1 WO 2019096284 A1 WO2019096284 A1 WO 2019096284A1 CN 2018116062 W CN2018116062 W CN 2018116062W WO 2019096284 A1 WO2019096284 A1 WO 2019096284A1
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WIPO (PCT)
Prior art keywords
layer
terminal
information
layer information
bit string
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PCT/CN2018/116062
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English (en)
Chinese (zh)
Inventor
徐明慧
张希
秦熠
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华为技术有限公司
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Publication of WO2019096284A1 publication Critical patent/WO2019096284A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and a terminal for reporting layer information.
  • the operating frequency bands of communication systems are all in the frequency range below 3 GHz, and the available working frequency bands are less and less in this frequency range, which cannot meet the growing communication. demand.
  • the frequency range above 3 GHz has a large number of underutilized frequency bands. Therefore, the industry is researching and developing next-generation communication systems such as 5G systems with operating bands above 3 GHz to provide ultra-high-speed data communication services.
  • the frequency bands available for the next generation communication system include those located at 28 GHz, 39 GHz, 60 GHz, 73 GHz, and the like. Because its operating frequency band is above 3 GHz, the next generation communication system has the remarkable features of high frequency communication system, such as its wide working bandwidth and its use of highly integrated antenna array, which makes it easy to achieve high throughput.
  • phase noise PPN
  • Doppler effect Doppler effect
  • CFO center frequency offset
  • next-generation communication systems operating in the frequency band above 3 GHz will suffer from more severe medium-frequency distortion. Especially the impact of phase noise on it.
  • the Doppler effect and CFO's impact on the performance of next-generation communication systems operating in the 3 GHz band will also increase as the location of the operating band becomes higher.
  • the embodiment of the present application provides a method for reporting layer information and a terminal, which can reduce reporting overhead and reduce resource waste.
  • an embodiment of the present application provides a terminal, where the terminal is used to report layer information.
  • the terminal includes: a generating module, configured to generate a first message, where the first message carries ACK/NACK information and layer information, where the layer information is used to indicate a layer determined by the terminal, and the sending module is configured to send the first message. Reporting the layer information together with the ACK/NACK information can reduce unnecessary signaling overhead.
  • the ACK/NACK information and the layer information may be obtained by joint coding to obtain a bit string representation.
  • the ACK/NACK information may indicate an ACK or a NACK.
  • Layer information may indicate one or more layers in a layer set.
  • the layer set includes one or more layers that can be reported.
  • ACK/NACK information and layer information there are various combinations between ACK/NACK information and layer information.
  • NACK and layer 0 can be a combination
  • NACK and layer 1 can be another combination, and so on. These combinations can be represented by a single bit string.
  • a bit string in which ACK/NACK information and layer information are jointly encoded can be obtained.
  • the bit string obtained by joint coding indicates that the ACK/NACK information and the layer information can reduce the overhead as compared with the number of bits required to indicate ACK/NACK information and layer information respectively.
  • the number of layers indicated by the layer information is 2. This is equivalent to the first message carrying ACK/NACK information and layer information indicating two layers. It is also possible to represent the combination of the ACK/NACK information and the layer information indicating the layer information of the two layers. For example, bit string 0001 represents NACK, layer 0, and layer 1.
  • bit string obtained by the joint coding may be a first bit string or a second bit string; wherein the first bit string is used to indicate an ACK, and the second bit string is used to indicate one or more determined by the NACK and the terminal. Layers.
  • the number of elements in the layer set of the reported layer may be limited. By limiting the number of elements of a set of layers that can be reported, the number of bits required to report a layer can be reduced, thereby reducing overhead.
  • the joint coding in the embodiment of the present application mainly refers to combining layer information to be transmitted with other information and referring to the bit string. In this way, as long as the bit string is transmitted, the corresponding layer information and other information can be transmitted.
  • the sending module of the terminal is further configured to send a second message, where the second message carries indication information, where the indication information is used to indicate whether the configuration of the layer corresponding to the phase tracking reference signal PTRS port of the terminal is appropriate, or is used for requesting Report layer information.
  • the indication information can be represented by 1 bit. Thereby, a low overhead of 1 bit can be maintained without modifying the layer corresponding to the PTRS port.
  • the terminal Before generating the first message, the terminal may determine whether to report the layer information according to the reporting condition.
  • the reporting conditions include the following situations. Case 1, whether the high-level signaling configuration reports the layer information.
  • Case 2 Whether the high-level signaling configuration can exist PTRS, and if the high-level signaling is configured with PTRS, whether the scheduled MCS is greater than or equal to the MCS threshold of the PTRS and whether the scheduled bandwidth is greater than or equal to the scheduling bandwidth threshold of the PTRS.
  • Case 3 Whether the status of the currently transmitted data is NACK.
  • Case 4 Whether the uplink transmission resource is sufficient for transport layer information.
  • the terminal may determine the reporting layer information, otherwise the reporting layer information is not reported.
  • the frequency of reporting can be greatly reduced, which reduces unnecessary reporting, reduces reporting overhead, and reduces resource waste.
  • an embodiment of the present application provides an access device.
  • the access device includes: a receiving module, configured to receive, by the terminal, a first message, where the first message carries ACK/NACK information and layer information, where the layer information is used to indicate a layer determined by the terminal; and the processing module is configured to The phase of the information configuration terminal is the layer corresponding to the PTRS port of the reference signal.
  • the ACK/NACK information and the layer information may be obtained by joint coding to obtain a bit string representation.
  • the ACK/NACK information may indicate an ACK or a NACK.
  • Layer information may indicate one or more layers in a layer set.
  • the layer set includes one or more layers that can be reported.
  • ACK/NACK information and layer information there are various combinations between ACK/NACK information and layer information.
  • NACK and layer 0 can be a combination
  • NACK and layer 1 can be another combination, and so on.
  • These combinations can be represented by a single bit string.
  • a bit string in which ACK/NACK information and layer information are jointly encoded can be obtained.
  • the bit string obtained by joint coding indicates that the ACK/NACK information and the layer information can reduce the overhead as compared with the number of bits required to indicate ACK/NACK information and layer information respectively.
  • the number of layers indicated by the layer information is 2. This is equivalent to the first message carrying ACK/NACK information and layer information indicating two layers. It is also possible to represent the combination of the ACK/NACK information and the layer information indicating the layer information of the two layers. For example, bit string 0001 represents NACK, layer 0, and layer 1.
  • bit string obtained by the joint coding may be a first bit string or a second bit string; wherein the first bit string is used to indicate an ACK, and the second bit string is used to indicate one or more determined by the NACK and the terminal. Layers.
  • the number of elements in the layer set of the reported layer may be limited. By limiting the number of elements of a set of layers that can be reported, the number of bits required to report a layer can be reduced, thereby reducing overhead.
  • the receiving module of the access device is further configured to receive, by the terminal, a second message, where the second message carries indication information, where the indication information is used to indicate a layer corresponding to the phase tracking reference signal PTRS port of the terminal. Whether the configuration is appropriate or used to request reporting layer information.
  • an embodiment of the present application provides a method for reporting layer information.
  • the method includes: generating a first message, the first message carrying ACK/NACK information and layer information, wherein the layer information is used to indicate a layer determined by the terminal; and the first message is sent.
  • the ACK/NACK information and the layer information are obtained by joint coding to obtain a bit string representation.
  • an embodiment of the present application provides a method for processing layer information.
  • the method includes: receiving, by a terminal, a first message, where the first message carries ACK/NACK information and layer information, where the layer information is used to indicate a layer determined by the terminal; and the phase tracking reference signal of the terminal is configured according to the layer information.
  • the layer corresponding to the PTRS port.
  • the ACK/NACK information and the layer information are obtained by joint coding to obtain a bit string representation.
  • an embodiment of the present application provides a method for reporting layer information.
  • the method includes: generating a first message, the first message carrying layer information, the layer information indicating different layers in a case of different DMRS port grouping; sending the first message.
  • multiple DMRS port groups report layer information of multiple layers.
  • the layer information of the plurality of layers can be represented by a bit string. For a certain bit string, such as 0000, it indicates a different layer in the case of different DMRS port groupings. For example, 0000 refers to Layer 0 and Layer 2 in the case of the first DMRS port grouping and Layer 0 and Layer 4 in the case of the second DMRS Port grouping.
  • the inter-layer joint coding mode is adopted, which can reduce the number of bits required for reporting multiple layers and reduce the overhead.
  • the number of DMRS ports in the DMRS port group obtained by DMRS port grouping is usually an even number. In this way, it is possible to exclude a grouping situation in which the number of DMRS ports in a group is an odd number. This can reduce the number of bits representing layer information.
  • an embodiment of the present application provides a method for receiving layer information.
  • the method includes: the access device receives a first message sent by the terminal, where the first message carries layer information, where the layer information indicates different layers in different DMRS port grouping conditions; the access device according to the layer information and the DMRS port of the terminal The grouping information determines the layer reported by the terminal.
  • a processing device including a transceiving function is provided, and the device may be a terminal or a chip in the terminal.
  • the device has the function of implementing the method provided by the fifth aspect. This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the terminal when the processing device is a terminal, the terminal comprises: a processing unit and a transceiver unit, the processing unit may be, for example, a processor, and the transceiver unit may be, for example, a transceiver, and the transceiver includes RF circuit.
  • the terminal further includes a storage unit, which may be, for example, a memory.
  • the storage unit is configured to store a computer execution instruction
  • the processing unit is connected to the storage unit, and the processing unit executes a computer execution instruction stored by the storage unit, so that the access network device executes the fifth Aspect method.
  • the processing device when the processing device is a chip in an access network device, the chip includes: a processing unit and a transceiver unit, and the processing unit may be, for example, a processor, and the transceiver unit may be, for example, Input/output interfaces, pins or circuits on the chip.
  • the processing unit may execute computer executed instructions stored by the storage unit to cause the chip within the terminal to perform the method of the above fifth aspect.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc.
  • the storage unit may also be a storage unit located outside the chip in the access network device, such as a read-only A read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM), and the like.
  • ROM read-only A read-only memory
  • RAM random access memory
  • a processing device including a transceiver function is provided, and the device may be an access device or a chip in the access device.
  • the device has the function of implementing the various methods provided by the sixth aspect. This function can be implemented in hardware or in hardware by executing the corresponding software.
  • the hardware or software includes one or more units corresponding to the functions described above.
  • the access device when the processing device is an access device, the access device includes: a processing unit and a transceiver unit, and the processing unit may be, for example, a processor, and the transceiver unit may be, for example, a transceiver.
  • the transceiver includes a radio frequency circuit.
  • the access device further includes a storage unit, which may be, for example, a memory.
  • the storage unit is configured to store a computer execution instruction
  • the processing unit is coupled to the storage unit, and the processing unit executes a computer execution instruction stored by the storage unit to cause the access network device to perform the above The method of the sixth aspect.
  • the processing device when the processing device is a chip in an access network device, the chip includes: a processing unit and a transceiver unit, and the processing unit may be, for example, a processor, and the transceiver unit may be, for example, Input/output interfaces, pins or circuits on the chip.
  • the processing unit may execute computer executed instructions stored by the storage unit to cause the chip within the terminal to perform the method of the sixth aspect above.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc.
  • the storage unit may also be a storage unit located outside the chip in the access network device, such as a read-only A read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM), and the like.
  • ROM read-only A read-only memory
  • RAM random access memory
  • the processor mentioned in any of the above may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the program-implemented integrated circuit of the method of the third aspect to the sixth method may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • a computer storage medium having stored therein program code for indicating an instruction to perform the methods of the third to sixth methods.
  • a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods of the third to sixth methods.
  • the reporting is triggered by the reporting condition, which can greatly reduce the frequency of reporting, thereby reducing unnecessary reporting, reducing reporting overhead, and reducing resource waste.
  • the reporting condition can greatly reduce the frequency of reporting, thereby reducing unnecessary reporting, reducing reporting overhead, and reducing resource waste.
  • the number of bits required to report a layer can be reduced, thereby reducing overhead.
  • joint coding such as joint coding between layers or joint coding with ACK/NACK information, the number of bits required to report a layer or report multiple layers can be reduced, thereby reducing overhead.
  • FIG. 1 is a schematic structural diagram of a wireless communication system applied to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of transmission of an access device and a terminal.
  • FIG. 3 is a schematic diagram of transmission of an access device and a terminal.
  • FIG. 4 is a schematic diagram of a method for reporting layer information according to an embodiment of the present application.
  • FIG. 5 is a terminal 500 according to an embodiment of the present application.
  • FIG. 6 is an access device 600 according to an embodiment of the present application.
  • FIG. 7 is an apparatus 700 including a transceiver provided by an embodiment of the present application.
  • FIG. 1 is a schematic structural diagram of a wireless communication system applied to an embodiment of the present application.
  • the wireless communication system includes an access device and at least one terminal (such as terminal 1 and terminal 2 in FIG. 1).
  • the terminal is connected to the access device in a wireless manner, and performs control information or data information transmission with the access device.
  • the terminal can be fixed or mobile.
  • FIG. 1 is only a schematic diagram, and the network system may further include other network devices, such as a wireless relay device or a wireless backhaul device.
  • the embodiment of the present application does not limit the number of access devices and terminals included in the wireless communication system.
  • the access device is an access device that the terminal accesses to the wireless communication system by using a wireless device, and may be a base station, an evolved base station, a base station in a next-generation communication system, or an access node in a WiFi system.
  • a terminal may also be called a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), or the like.
  • the terminal can be a mobile phone, a tablet, a computer with wireless transceiver function, and other terminals with wireless transceiver functions.
  • Each layer corresponds to a demodulation reference signal (DMRS) port.
  • DMRS demodulation reference signal
  • Each DMRS port transmits a corresponding DMRS, which is used to estimate the channel experienced by the data transmitted with the reference signal.
  • CDM code division multiplexing
  • the DMRS ports corresponding to the reference signals are considered to be quasi-co-located or quasi-co-located (QCL).
  • the quasi-co-located DMRS ports can form a DMRS port group.
  • phase tracking reference signal (PTRS or PT-RS) ports may be required to transmit the PTRS, and the PTRS is used for the PTRS.
  • a phase change experienced by the data transmitted with the PTRS is estimated.
  • Each PTRS port corresponds to one DMRS port in one DMRS port group.
  • the DMRS port corresponding to the PTRS port is the DMRS port with the smallest port number in the DMRS port group in which it is located (or the index corresponding to the DMRS port is the smallest). Since a DMRS port also has a corresponding relationship with a layer, a PTRS port also corresponds to one layer.
  • DMRS ports For example, if the access network device and the terminal transmit at four layers, there are corresponding four DMRS ports. These four DMRS ports can be divided into two DMRS port groups. It is quasi-co-located between DMRS ports in the same port group. These two DMRS port groups correspond to two PTRS ports. Table 1 shows the correspondence between a layer, a DMRS port, and a PTRS port.
  • Table 1 Correspondence table of a layer, DMRS port, and PTRS port
  • layer 0 corresponds to DMRS port 0
  • layer 1 corresponds to DMRS port 1
  • layer 2 corresponds to DMRS port 2
  • layer 3 corresponds to DMRS port 3.
  • the DMRS port 0 and the DMRS port 1 form a DMRS port group.
  • PTRS port 0 corresponds to the DMRS port (ie, DMRS port 0) with the smallest port number in the DMRS port group.
  • DMRS port 2 and DMRS port 3 form another DMRS port group.
  • the PTRS port 1 corresponds to the DMRS port (ie, DMRS port 2) having the smallest port number in the DMRS port group. Therefore, it can be considered that PTRS port 0 corresponds to layer 0, and PTRS port 1 corresponds to layer 2.
  • the PTRS is used to estimate the phase change of the data transmitted with the PTRS.
  • the terminal may report one or more layers corresponding to the PTRS port for downlink transmission.
  • the one or more layers have better channel quality.
  • the better channel quality may include a larger signal to noise ratio SNR, a larger signal to interference and noise ratio SINR, and the like.
  • the access device adjusts the precoding matrix corresponding to the DMRS port corresponding to the layer and the smallest DMRS port according to the layer reported by the terminal.
  • This is equivalent to adjusting the port configuration of the DMRS, so that the layer corresponding to the DMRS port with the smallest port number is a layer with better channel quality, and the purpose of mapping the PTRS on the layer with better channel quality is achieved. Therefore, the estimation performance of the PTRS can be ensured, so that the data transmission can be performed better in a communication scenario where the phase noise is relatively bad.
  • FIG. 2 and FIG. 3 are schematic diagrams of transmissions of an access device and a terminal.
  • the access device and the terminal have four layers, which are respectively represented by L0, L1, L2, and L3.
  • Each layer corresponds to one DMRS port, which is represented by DMRS0, DMRS1, DMRS2, and DMRS3, respectively.
  • the DMRS port with the smallest port number corresponds to one PTRS port, and the PTRS port is represented by PTRS0.
  • Each DMRS port has a corresponding precoding matrix, which is represented by P0, P1, P2, and P3, respectively.
  • the SNR of the DMRS with the smallest port number has the highest signal-to-noise ratio (or signal-to-noise ratio) or the best channel quality, such as the signal-to-noise of the L0 of the access device in Figure 2. Than the biggest.
  • the terminal estimates that the signal to noise ratio of L1 is the largest. The terminal reports L1 to the access device. As shown in FIG.
  • the access device adjusts the precoding matrix of the DMRS port corresponding to the layer to the precoding matrix of L0 according to the layer (L1) reported by the terminal, and adjusts the precoding matrix of the smallest DMRS port to the
  • the precoding matrix of the layer (L1) is such that the adjusted L0', that is, the data of the original L1 layer is still the layer with the largest signal to noise ratio after being transmitted to the terminal, and still corresponds to the smallest DMRS port. In this way, it can be ensured that the PTRS is always transmitted on the layer with the largest signal to noise ratio, thereby ensuring the estimated performance of the PTRS, thereby more effectively performing data transmission.
  • the terminal needs to report information of one or more layers.
  • These layers typically have better channel quality, a larger signal to noise ratio, or a larger signal to interference and noise ratio.
  • this can increase system overhead or occupy signaling resources. There is therefore a need for a method of reporting one or more layers of information without increasing overhead or simply increasing overhead.
  • FIG. 4 is a schematic diagram of a method for reporting layer information according to an embodiment of the present application. As shown in FIG. 4, the method specifically includes the following steps.
  • Step 401 The terminal generates a first message, where the first message carries layer information.
  • the layer information is used to indicate the layer determined by the terminal, that is, the layer corresponding to the PTRS port desired by the terminal.
  • the terminal may carry the layer information in the first message by joint coding, such as joint coding between layers or joint coding with ACK/NACK. The following describes in detail how the terminal reports layer information by joint coding through an embodiment.
  • Step 402 The terminal sends a first message to the access device.
  • the terminal Before generating the first message, the terminal may determine whether to report the layer information according to the reporting condition.
  • the reporting conditions include the following situations.
  • Case 1 whether the high-level signaling configuration reports the layer information.
  • high layer signaling such as RRC signaling configures whether to report layer information.
  • This layer information is used to indicate the layer recommended by the terminal corresponding to the PTRS port.
  • the terminal determines whether to report the layer information according to the indication of the high layer signaling. If the high-layer letter is configured as the reporting layer information, the terminal reports the layer information to the access device. Otherwise, it will not be reported.
  • Case 2 high-level signaling configuration whether there is PTRS. If higher layer signaling such as RRC signaling is configured as PTRS, the terminal compares the currently scheduled modulation and coding scheme (MCS) and/or bandwidth with the corresponding MCS threshold and/or bandwidth threshold. If the scheduled MCS is greater than or equal to the MCS threshold of the PTRS (such as the first MCS threshold) and the scheduled bandwidth is greater than or equal to the scheduling bandwidth threshold of the PTRS (such as the first bandwidth threshold), the PTRS exists, otherwise the PTRS does not exist. If the PTRS exists, the terminal reports the layer information, otherwise the layer information is not reported.
  • MCS modulation and coding scheme
  • the MCS threshold, the scheduling bandwidth threshold is configured by the high-level signaling to the terminal, or the default value is pre-agreed by the terminal and the network side. Or based on whether there is PTRS in the currently scheduled data.
  • the terminal determines whether to report the layer information according to whether there is a PTRS in the currently scheduled data. If there is PTRS in the currently scheduled data, the layer information is reported, otherwise it is not reported.
  • Case 3 Whether the current state of the transmitted data is ACK, that is, whether the current data transmission is correctly transmitted or decoded. If the status of the currently transmitted data is ACK, it will not be reported, otherwise it will be reported. For any data transmission, the terminal verifies that the current transmission is correct based on the check code transmitted together in the data. If yes, the ACK is reported to the access device, otherwise the NACK is reported to the access device. If the access device receives an ACK, it will schedule new data for the terminal; otherwise, retransmit the last data. Therefore, if the status of the current transmission data is ACK, it indicates that the data transmission quality is relatively good, and there is no need to report layer information to indicate a layer with better channel quality. Of course, it is also possible to consider whether to report layer information from the perspective of whether the state of the currently transmitted data is NACK.
  • the uplink transmission resource may include: a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Sharing Channel (PUSCH).
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Sharing Channel
  • the terminal may further determine whether to report the layer information according to whether the PTRS exists in the current scheduling data. If the high-level signaling is not reported, the PTRS is not reported in the current scheduled data.
  • the period of reporting layer information may be predefined or configured in higher layer signaling such as RRC signaling.
  • the terminal reports layer information according to a predefined or configured period. Further, when the reporting time determined by the period is met, the terminal may further determine whether there is a PTRS in the currently scheduled data. If yes, report it, otherwise it will not be reported even if the conditions of the period are met.
  • the layer information is triggered by the reporting condition, the number of times of reporting can be reduced, and the reporting overhead can be reduced.
  • the terminal needs to further determine the number of reported layers indicated by the layer information and how the layer information is sent to the access device.
  • the number of layers when there are one or more PTRS ports in the downlink transmission, the number of layers can be the same as the number of PTRS ports. For example, the number of layers indicated by the layer information reported by the terminal is 2. In addition, one DMRS port group corresponds to one PTRS port. The number of layers can be the same as the number of currently scheduled DMRS port groups. For example, when the number of currently scheduled DMRS port groups is 1, the number of layers indicated by the reported layer information is 1. If the number of currently scheduled DMRS port groups is 2, the number of layers indicated by the reported layer information is Is 2.
  • the reference signals that can be used to measure the channel have a channel state information (CSI) reference signal (CSI-reference signal) and a DMRS.
  • CSI channel state information
  • Table 2 is a correspondence table between 3 bits and layers. It should be noted that Table 2 is only an example, and there may be other correspondences between layers and 3 bits. As the number of layers increases or decreases, the corresponding number of bits required may also increase or decrease. For example, when there are 4 layers, only 2 bits are needed.
  • the reported information may be used to indicate the layer number of the layer corresponding to the PTRS port suggested by the terminal.
  • the layer number may be an absolute layer number, or may be a relative layer number in a layer set corresponding to the PTRS port group of the PTRS port in the Physical Downlink Sharing Channel (PDSCH), or may be a corresponding PTRS port in the PDSCH.
  • the relative layer number of the layer set of the DMRS port group relative to the layer where the PTRS port is located.
  • the number of elements in the layer set of the reported layer can be limited. For example, only the first 4 layers in Table 2 can be selected.
  • the number of bits required to report one of the layers can be reduced.
  • the number of elements in the layer set is reduced to 4, only two bits are needed to represent the four layers.
  • the layer number can be either an absolute number or a relative number.
  • the absolute numbers of the eight layers may be 0, 1, 2, ..., 7, which represent the first, second, third, ..., and eight layers, respectively.
  • the relative number of layers 2-5 may be 0, 1, 2, 3.
  • the layer set can be limited to ⁇ current layer-1, current layer, current layer+1 ⁇ , corresponding to layer 1, layer 2, layer 3, respectively.
  • Limiting the number of layer sets can reduce overhead.
  • the number of bits occupied by the layer information may also be reduced by joint coding. The method of reducing the overhead of the transport layer information by joint coding will be described in detail below.
  • the terminal needs to feed back ACK/NACK.
  • the ACK is fed back, and when the data is not correctly received, the NACK is fed back.
  • the data transmission is correct, the current channel quality is considered to be better, or the quality of the layer where the PTRS is located is better, that is, no adjustment is needed. Therefore, the layer information can be jointly encoded with the bits occupied by the ACK/NACK.
  • the current data transmission status is ACK
  • the terminal correctly decodes the transmitted data and the current PTRS port configuration is suitable, that is, the port configuration information of the PTRS does not need to be modified at this time, or
  • the precoding matrix needs to be adjusted such that the smallest DMRS port number corresponds to the layer with the best signal to noise ratio, or the current PTRS port configuration is considered to be optimal.
  • the smallest DMRS port number corresponds to the best or better layer of signal to noise ratio (signal to noise ratio). Therefore, there is no need to report layer information at this time.
  • the current data transmission status is NACK
  • the report layer information needs to be reported. Combined with this feature, layer information and ACK/NACK can be jointly coded, which reduces the bits required for reporting layer information and reduces overhead.
  • multiple layers can be used to simultaneously represent the reported layer and whether the feedback is ACK or NACK.
  • the correspondence between the 2 bits and the information it refers to can be expressed as Table 3.
  • Table 5 gives a possible example of 4, and of course there may be other correspondences as long as it utilizes layer information and joint coding with ACK/NACK, which should fall within the scope of the present application.
  • Example 2 Example 3
  • Example 4 00 NACK, layer 5 NACK, current layer NACK, current layer NACK 01 NACK, layer 6 NACK, layer 5 NACK, current layer +1 NACK, current layer 10 NACK, layer 7 NACK, layer 6 NACK, current layer +2 NACK, current layer +1 11 ACK ACK ACK ACK
  • the number of bits is 2, the number of reported layers is at most 3 layers.
  • the specific layer number (such as the absolute layer number 5, 6, 7) can be carried while carrying the NACK.
  • the ACK indicates that the feedback is NACK and the reported layer is the current layer.
  • the 01 indicates that the feedback is NACK and the layer reported is the layer number of the current layer plus a layer referred to.
  • the purpose of reporting one of the three layers can be achieved by adding one bit, for example, the cases shown in Examples 1 and 3 in Table 3. If the transmission of the ACK/NACK itself requires 2 bits, for example, 00 means NACK, and 11 means ACK. At this time, the remaining two states can complete reporting of one of the two layers, that is, the reporting layer information does not need to add bits. For example, the cases shown in Example 2 and Example 4 in Table 3. Alternatively, the reported layers in Examples 3 and 4 of Table 3 may also be represented by absolute layer numbers.
  • the purpose of reporting one of the 6 or 7 layers can be achieved by adding two bits. If the transmission of ACK/NACK itself requires 2 bits, such as 00 for NACK and 11 for ACK, adding one bit and the remaining two states in the original bit can complete reporting of one of the six layers. If the transmission of the ACK/NACK itself requires 3 bits, such as 000 for NACK and 111 for ACK, the remaining 6 states can complete reporting of one of the 6 layers, as shown in Example 4 of Table 4.
  • the overhead of reporting layer information may be reduced by means of inter-layer joint coding.
  • two PTRS ports can be scheduled at the same time.
  • each PTRS port corresponds to one DMRS port group.
  • a layer that the terminal considers that the channel quality is good can be reported for each PTRS port. Therefore, the number of layers reported above is 2, and other cases can be similarly obtained.
  • the number of DMRS ports included in the two DMRS port groups corresponding to the two PTRS ports is ⁇ G1, G2 ⁇ , where G1 represents the first DMRS.
  • G2 indicates the number of DMRS ports included in the second DMRS port group.
  • ⁇ G1, G2 ⁇ has the following groupings: ⁇ 0,6 ⁇ , ⁇ 6,0 ⁇ , ⁇ 1,5 ⁇ , ⁇ 5,1 ⁇ , ⁇ 2,4 ⁇ , ⁇ 4,2 ⁇ , ⁇ 3 , 3 ⁇ .
  • TCI transmission configuration indication
  • Table 5 is a correspondence table of multi-bit and DMRS ports. Since the DMRS port has a corresponding relationship with the layer, the DMRS port in Table 5 can be replaced with the corresponding layer. At this time, a correspondence table of multiple bits and layers can be easily obtained. The following uses the DMRS port as an example.
  • Gij represents the jth DMRS port of the i-th DMRS port group
  • DMRS port when the DMRS port is grouped as ⁇ 0, 6 ⁇ or ⁇ 6, 0 ⁇ , the equivalent of 6 DMRS ports are in one group, and this is equivalent to only one DMRS port group, and only Report a DMRS port or layer.
  • the DMRS port group is ⁇ 1, 5 ⁇ or ⁇ 5, 1 ⁇
  • there is only one DMRS port in the DMRS port group that is, the DMRS port group having only one DMRS port.
  • the downlink transport layer corresponding to the proposed PTRS is the layer corresponding to the only one DMRS port, so the layer information of the DMRS port group is not reported.
  • the DMRS port of the CDM can be considered as the same DMRS port group. Because the number of DMRS ports of the CDM is 2 or 4, the number of DMRS ports included in the port group of the DMRS is 2 or 4, or the number of ports included in the DMRS port group is even, then ⁇ 3, 3 ⁇ can be excluded. Grouping. Therefore, the number of bits required to report two layers can be further reduced to three, which is the same as the number of bits required to report a layer.
  • Similar joint coding can be done when the number of DMRS ports that are extended to CSI or can be scheduled in one time slot simultaneously with PTRS is 8. For example, when the number of DMRS ports is 8, the number of bits required when the packet is ⁇ 3, 5 ⁇ or ⁇ 5, 3 ⁇ is the most, which is 5 bits. In other cases, only 3 bits are required (such as the case of ⁇ 8, 0 ⁇ , ⁇ 0, 8 ⁇ , ⁇ 7, 1 ⁇ , ⁇ 1, 7 ⁇ ) or 4 bits (such as the group ⁇ 6, 2 ⁇ , In the case of ⁇ 2,6 ⁇ , ⁇ 4,4 ⁇ , it is possible to complete the reporting of the two layer numbers.
  • the number of ports included in the DMRS port group is considered to be even, the grouping of ⁇ 1, 7 ⁇ or ⁇ 7, 1 ⁇ can be excluded, further reducing the number of bits required to report the two layers to 4.
  • Another method of reporting layer information can be obtained by the example in which the number of layers reported above is two.
  • the method includes: generating a first message, the first message carrying layer information, the layer information indicating different layers in a case of different DMRS port grouping; sending the first message.
  • multiple DMRS port groups report layer information of multiple layers.
  • the layer information of the plurality of layers can be represented by a bit string. For a certain bit string, such as 0000, it indicates a different layer in the case of different DMRS port groupings. For example, 0000 refers to Layer 0 and Layer 2 in the case of the first DMRS port grouping and Layer 0 and Layer 4 in the case of the second DMRS Port grouping.
  • the inter-layer joint coding mode is adopted, which can reduce the number of bits required for reporting multiple layers and reduce the overhead.
  • the number of DMRS ports in the DMRS port group obtained by DMRS port grouping is usually an even number. In this way, it is possible to exclude the grouping situation in which the number of DMRS ports in a group is an odd number. This can reduce the number of bits representing layer information.
  • the packet information between the DMRS port groups is known, and the inter-layer joint coding is used to reduce the number of bits required for reporting the two layers and reduce the overhead.
  • the number of reported layers is 2, at least the overhead of 1 bit can be reduced.
  • the indication information may be fed back to the access device.
  • the indication information is used to indicate whether the configuration of the layer corresponding to the PTRS port of the terminal is suitable; or the indication information is used to indicate whether the layer corresponding to the PTRS port is a layer required by the terminal; or the indication information is used for requesting reporting Layer information.
  • the indication information is carried in the signaling of 1 bit.
  • the access device may configure the terminal to report the layer information according to other schemes in the present invention. .
  • the indication information can be fed back simultaneously with the ACK/NACK by means of joint coding. This scheme can maintain a low overhead of 1 bit without modifying the layer corresponding to the PTRS port.
  • the reporting is triggered by the reporting condition, which can greatly reduce the frequency of reporting, thereby reducing unnecessary reporting, reducing reporting overhead, and reducing resource waste.
  • the reporting condition can greatly reduce the frequency of reporting, thereby reducing unnecessary reporting, reducing reporting overhead, and reducing resource waste.
  • the number of bits required to report a layer can be reduced, thereby reducing overhead.
  • joint coding such as joint coding between layers or joint coding with ACK/NACK, the number of bits required to report a layer or report multiple layers can be reduced, thereby reducing overhead.
  • FIG. 5 is a terminal 500 according to an embodiment of the present application.
  • the terminal 500 includes: a generating module 510, configured to generate a first message, where the first message carries ACK/NACK information and layer information, where the layer information is used to indicate a layer determined by the terminal, and the sending module 520 is configured to send the first Message. Reporting the layer information together with the ACK/NACK information can reduce unnecessary signaling overhead.
  • the ACK/NACK information and the layer information may be obtained by joint coding to obtain a bit string representation.
  • the ACK/NACK information may indicate an ACK or a NACK.
  • Layer information may indicate one or more layers in a layer set.
  • the layer set includes one or more layers that can be reported.
  • ACK/NACK information and layer information there are various combinations between ACK/NACK information and layer information.
  • NACK and layer 0 can be a combination
  • NACK and layer 1 can be another combination, and so on. These combinations can be represented by a single bit string.
  • a bit string in which ACK/NACK information and layer information are jointly encoded can be obtained.
  • the bit string obtained by joint coding indicates that the ACK/NACK information and the layer information can reduce the overhead as compared with the number of bits required to indicate ACK/NACK information and layer information respectively.
  • the number of layers indicated by the layer information is 2. This is equivalent to the first message carrying ACK/NACK information and layer information indicating two layers. It is also possible to represent the combination of the ACK/NACK information and the layer information indicating the layer information of the two layers. For example, bit string 0001 represents NACK, layer 0, and layer 1.
  • bit string obtained by the joint coding may be a first bit string or a second bit string; wherein the first bit string is used to indicate an ACK, and the second bit string is used to indicate one or more determined by the NACK and the terminal. Layers.
  • the number of elements in the layer set of the reported layer may be limited. By limiting the number of elements of a set of layers that can be reported, the number of bits required to report a layer can be reduced, thereby reducing overhead.
  • the joint coding in the embodiment of the present application mainly refers to combining layer information to be transmitted with other information and referring to the bit string. In this way, as long as the bit string is transmitted, the corresponding layer information and other information can be transmitted.
  • the sending module of the terminal is further configured to send a second message, where the second message carries indication information, where the indication information is used to indicate whether the configuration of the layer corresponding to the phase tracking reference signal PTRS port of the terminal is appropriate, or is used for requesting Report layer information.
  • the indication information can be represented by 1 bit. Thereby, a low overhead of 1 bit can be maintained without modifying the layer corresponding to the PTRS port.
  • the terminal Before generating the first message, the terminal may determine whether to report the layer information according to the reporting condition.
  • the reporting conditions include the following situations. Case 1, whether the high-level signaling configuration reports the layer information. Case 2, high-level signaling configuration whether there is PTRS. Case 3: Whether the status of the currently transmitted data is NACK. Case 4: Whether the uplink transmission resource is sufficient for transport layer information.
  • the terminal may determine the reporting layer information, otherwise the reporting layer information is not reported.
  • the frequency of reporting can be greatly reduced, which reduces unnecessary reporting, reduces reporting overhead, and reduces resource waste.
  • FIG. 6 is an access device 600 according to an embodiment of the present application.
  • the access device 600 includes: a receiving module 610, configured to receive, by the terminal, a first message, where the first message carries ACK/NACK information and layer information, where the layer information is used to indicate a layer determined by the terminal, and the processing module 620 is configured to: The layer corresponding to the phase tracking reference signal PTRS port of the terminal is configured according to the layer information.
  • the terminal 500 can have any of the functions of the terminals in the above method embodiments.
  • the access device 600 can have any of the functions of the terminals in the above method embodiments.
  • the foregoing and other management operations and/or functions of the respective modules of the terminal 500 or the access device 600 are respectively omitted in order to implement the corresponding steps of the foregoing various methods.
  • FIG. 7 is an apparatus 700 including a transceiver provided by an embodiment of the present application.
  • a transceiver 710, a processor 720 and a memory 730 are included.
  • the memory 730 can be used to store indication information, and can also be used to store code, instructions, and the like executed by the processor 720.
  • the transceiver 710 can include a radio frequency circuit.
  • device 700 can be a terminal.
  • the sending module 520 in the embodiment of the present application may be implemented by the transceiver 710, and the generating module 510 may be implemented by the processor 720.
  • Device 700 can also be an access device.
  • the receiving module 610 in the embodiment of the present application may be implemented by the transceiver 710, and the processing module 620 may be implemented by the processor 720.
  • the embodiment of the present application further provides a chip that implements the method described in the foregoing embodiment.
  • the chip includes a processing circuit and a transceiver circuit.
  • the transceiver circuit can be, for example, an input/output interface, a pin or a circuit, or the like.
  • the processing circuit can execute computer executed instructions stored by the memory unit.
  • the chip may also include a memory unit.
  • the storage unit may be a register, a cache, or the like. Of course, it is also possible to provide an additional memory unit for the chip.
  • the storage unit may also be a storage unit located outside the chip in the terminal or the access device, such as a read-only memory (ROM) or other type of static storage device that can store static information and instructions. Random access memory (RAM), etc.
  • ROM read-only memory
  • RAM Random access memory
  • the embodiment of the present application also provides a communication system.
  • the communication system includes: a terminal box access device that can implement the above method.
  • the communication system includes the terminal 500 in the embodiment shown in FIG. 5 and the access device 600 shown in FIG. 6.
  • 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 embodiment of the present application further provides a computer program product comprising instructions, which when executed on a computer, cause the computer to execute the method of the above embodiment.
  • 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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  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de signalement d'informations de couche. Dans le procédé, une chaîne de bits obtenue par codage conjoint est utilisée pour indiquer des informations ACK/NACK et des informations de couche, ce qui permet d'économiser le nombre de bits requis pour indiquer respectivement des informations ACK/NACK et des informations de couche, et de réduire ainsi les surdébits. De plus, le déclenchement d'un signalement d'après des conditions de signalement peut réduire significativement la fréquence de signalement et, partant, réduire les signalements inutiles, les surdébits de signalement, et le gaspillage de ressources. En limitant le nombre d'éléments pouvant être signalés dans un ensemble de couches, le nombre de bits requis pour signaler une couche peut être réduit, ce qui réduit également les surdébits.
PCT/CN2018/116062 2017-11-17 2018-11-17 Procédé de signalement d'informations de couche, et terminal WO2019096284A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021062719A1 (fr) * 2019-09-30 2021-04-08 Nec Corporation Procédés de communication, dispositif terminal, dispositif de réseau et support lisible par ordinateur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112134662B (zh) * 2019-06-25 2022-04-26 中国电信股份有限公司 准共站址信息指示方法、设备和系统
CN112260804B (zh) * 2019-07-05 2022-03-29 大唐移动通信设备有限公司 一种dmrs资源确定方法和通信设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102377540A (zh) * 2010-08-13 2012-03-14 北京三星通信技术研究有限公司 传输信道状态信息和混合自动重传请求反馈信息的方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011136554A2 (fr) * 2010-04-27 2011-11-03 엘지전자 주식회사 Procédé et appareil de transmission entrée multiple sortie multiple (mimo) en liaison montante
CN107431935B (zh) * 2015-04-10 2021-03-30 松下电器（美国）知识产权公司 基站、终端、接收方法以及发送方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102377540A (zh) * 2010-08-13 2012-03-14 北京三星通信技术研究有限公司 传输信道状态信息和混合自动重传请求反馈信息的方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HUAWEI ET AL.: "Rl-1709939, PTRS for CP-OFDM", 3GPP TSG RAN WGI AD HOC MEETING, 27 June 2017 (2017-06-27), XP051299164 *
LENOVO ET AL.: "Rl-1715538, Remaining Issues on PTRS", 3GPP TSG RAN WGI MEETING NR#3, 21 September 2017 (2017-09-21), XP051329069 *
LENOVO ET AL.: "Rl-1717854, Remaining Issues on PTRS", 3GPP TSG RAN WGI MEETING 90BIS, 13 October 2017 (2017-10-13), XP051341038 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021062719A1 (fr) * 2019-09-30 2021-04-08 Nec Corporation Procédés de communication, dispositif terminal, dispositif de réseau et support lisible par ordinateur

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