A signal transmitting, receiving and channel detecting method and device

Abstract

This application proposes a signal transmission and reception method and apparatus for channel detection, comprising: configuring a measurement reference signal to occupy frequency domain resources in a first time-domain symbol set where a control channel is located; transmitting the configuration information of the measurement reference signal or the control channel via control signaling; and / or transmitting the control channel in a second time-domain symbol set where the measurement reference signal is located; wherein the time-domain symbol set includes M symbols, M and N are natural numbers; the measurement reference signal is a measurement reference signal port or a measurement reference signal resource, and the measurement reference signal resource includes at least one measurement reference signal port.

Description

Technical Field

[0001] This application relates to the field of communication technology, specifically to a method and device for signal transmission, reception, and channel detection. Background Technology

[0002] Fifth-generation mobile communication systems—next-generation wireless technology (5G-NR) tend to support aperiodic measurement signals, aiming to complete the triggering signaling of the measurement reference signal, the transmission of the measurement reference signal, and the feedback information based on the measurement reference signal in a short time, or even within the same time unit. However, the overhead of the triggering signaling becomes a problem.

[0003] As a core technology of 5G-NR communication, high-frequency communication needs to be further considered in the above measurement process. A significant characteristic of high-frequency communication is its beam-based transmission. Considering cost, there is a growing preference for hybrid beam transmission in high-frequency communication, where the radio frequency (RF) also has a beam direction, rather than the RF beam covering the entire cell. However, a single RF link can only transmit one RF beam within an OFDM (Orthogonal Frequency Division Multiplexing) symbol. When the RF beams corresponding to the measurement reference signal and data conflict within the same time unit, it is necessary to consider two aspects: firstly, the control channel needs to use time-division resources to transmit the control signaling corresponding to the measurement reference signal and data; secondly, it is necessary to consider how to multiplex the control signaling and measurement reference signal corresponding to the measurement to improve resource utilization while reducing the complexity of base station implementation. This is a problem that needs to be solved. Summary of the Invention

[0004] To address the aforementioned technical problems, embodiments of this application provide a signal transmission and reception method and device for channel detection.

[0005] This application provides a method for transmitting a measurement reference signal and a control channel, the method comprising:

[0006] Configure the measurement reference signal to occupy the frequency domain resources in the first time domain symbol set where the control channel is located, and send the configuration information of the measurement reference signal or the control channel through control signaling; and / or send the control channel in the second time domain symbol set where the measurement reference signal is located;

[0007] The time-domain symbol set includes M symbols, where M and N are natural numbers; the measurement reference signal is either a measurement reference signal port or a measurement reference signal resource, and the measurement reference signal resource includes at least one measurement reference signal port.

[0008] In the above scheme, the configuration information includes at least one of the following:

[0009] The time-domain symbol index occupied by the measurement reference signal in the first time-domain symbol set, the frequency-domain block index of the measurement reference signal in the time-domain symbol, the indication information of whether the measurement reference signal is transmitted, the indication information of the transmission pattern of the measurement reference signal in the frequency-domain block, the indication information of whether channel state information (CSI) needs to be reported, the time-frequency resources where the CSI information is reported, the configuration information of the first time-domain symbol set, and the configuration information of the second time-domain symbol set;

[0010] One symbol consists of MF frequency domain blocks, where MF is an integer greater than 1.

[0011] In the above scheme, at least one of the following information of the measurement reference signal is set with the receiving end: the symbol index occupied by the measurement reference signal in the first time domain symbol set, the frequency domain block index of the measurement reference signal in the time domain symbol, the indication information of whether the measurement reference signal is transmitted, the indication information of the transmission pattern of the measurement reference signal in the frequency domain block, the indication information of whether CSI information needs to be reported, and the time and frequency resources where the CSI information is reported.

[0012] In the above scheme, the control channel and the measurement reference signal are frequency-division multiplexed within a time-domain symbol.

[0013] In the above scheme, the frequency division multiplexing satisfies at least one of the following characteristics:

[0014] Frequency division multiplexing method using a dressing table structure;

[0015] The number of frequency domain blocks occupied by the control channel is greater than the number of frequency domain blocks occupied by the measurement reference signal;

[0016] The set of frequency domain block indices that the measurement reference signal can occupy is a subset of the set of frequency domain block indices that the control channel can occupy;

[0017] The set of frequency domain block indices that the control channel can occupy includes all frequency domain blocks in the symbol;

[0018] The set of frequency domain blocks occupied by the control channel and the set of frequency domain block indices occupied by the measurement reference signal are set by the receiving end.

[0019] In the above scheme, the frequency domain block of the measurement reference signal in one symbol is larger than the frequency domain block corresponding to the control channel;

[0020] The frequency domain block of the measurement reference signal described in one symbol includes NF frequency domain blocks corresponding to control channels, where NF is an integer greater than 1.

[0021] In the above scheme, the configuration information satisfies at least one of the following characteristics:

[0022] One measurement reference signal port occupies resources in NR symbols of the first time-domain symbol set, where 1 ≤ NR ≤ M;

[0023] A measurement reference signal resource occupies resources in NR1 symbols of the first time-domain symbol set, where 1 ≤ NR1 ≤ M;

[0024] The control channel occupies MC symbols in the second time-domain symbol set where the measurement reference signal is located, 1≤MC≤MCT, wherein the time-domain symbol set where the measurement reference signal is located includes MCT time-domain symbols;

[0025] The measurement reference signal resource occupies resources in the first time domain symbol set, but does not occupy resources outside the first time domain symbol set;

[0026] The measurement reference signal port occupies a portion of the frequency domain block resources in the time domain symbol;

[0027] The control signaling is transmitted in the control channel.

[0028] In the above scheme, NR is 1 and NR1 is 1.

[0029] In the above scheme, a measurement reference signal resource occupies resources in the first time-domain symbol set and resources outside the first time-domain symbol set;

[0030] A measurement reference signal port occupies resources in the first time domain symbol set and resources outside the first time domain symbol set.

[0031] In the above scheme, the second time-domain symbol set satisfies at least one of the following characteristics:

[0032] The second time-domain symbol set is the last element of the downlink transmission domain in the first time unit;

[0033] The interval between the starting symbol of the second time-domain symbol set and the starting position of the first time unit is x time-domain symbols, where x is a natural number greater than 0;

[0034] The time-domain symbols in the second time-domain symbol set are consecutive;

[0035] The first time unit is the time unit in which the second time domain symbol set is located.

[0036] In the above scheme, the first time domain symbol set and / or the second time domain symbol set appear in a set time unit, wherein the measurement reference signal cannot be transmitted on the first time domain symbol set where the control channel is located in an unset time unit, and / or the control channel cannot be transmitted in the second time domain set where the measurement reference signal is located in an unset time unit;

[0037] The set time unit index is sent to the receiving end via signaling.

[0038] In the above scheme, the time-domain symbol index range occupied by the measurement reference signal in the configuration information of the measurement reference signal includes one or more time-domain symbols starting from the second time unit;

[0039] The second time unit is the time unit for sending the measurement reference signal.

[0040] In the above scheme, the time-domain symbol set occupied by the control channel in the second time-domain symbol set is a subset of the second time-domain symbol set.

[0041] In the above scheme, the control channel satisfies at least one of the following characteristics:

[0042] The smallest mapping unit of the control channel is a comb frequency domain block in one symbol;

[0043] The smallest mapping unit of the control channel is a subcarrier group in a comb frequency domain block of a symbol, wherein a comb frequency domain block includes more than one subcarrier group.

[0044] In the above scheme, one time-domain symbol is one OFDM symbol;

[0045] The control channel is a downlink control channel;

[0046] The time unit is a subframe;

[0047] The control signaling is proprietary control signaling.

[0048] This application embodiment also provides a transmitting apparatus for measuring reference signals and control channels, the apparatus comprising:

[0049] The configuration unit is used to configure the frequency domain resources in the first time domain symbol set where the measurement reference signal occupies the control channel;

[0050] The transmitting unit is configured to transmit the measurement reference signal or the configuration information of the control channel via control signaling; and / or transmit the control channel in the second time-domain symbol set where the measurement reference signal is located;

[0051] The time-domain symbol set includes M symbols, where M and N are natural numbers; the measurement reference signal is either a measurement reference signal port or a measurement reference signal resource, and the measurement reference signal resource includes at least one measurement reference signal port.

[0052] In the above scheme, the configuration information includes at least one of the following:

[0053] The time-domain symbol index occupied by the measurement reference signal in the first time-domain symbol set, the frequency-domain block index of the measurement reference signal in the time-domain symbol, the indication information of whether the measurement reference signal is transmitted, the indication information of the transmission pattern of the measurement reference signal in the frequency-domain block, the indication information of whether channel state information (CSI) needs to be reported, the time-frequency resources where the CSI information is reported, the configuration information of the first time-domain symbol set, and the configuration information of the second time-domain symbol set;

[0054] One symbol consists of MF frequency domain blocks, where MF is an integer greater than 1.

[0055] In the above scheme, at least one of the following information of the measurement reference signal is set with the receiving end: the symbol index occupied by the measurement reference signal in the first time domain symbol set, the frequency domain block index of the measurement reference signal in the time domain symbol, the indication information of whether the measurement reference signal is transmitted, the indication information of the transmission pattern of the measurement reference signal in the frequency domain block, the indication information of whether CSI information needs to be reported, and the time and frequency resources where the CSI information is reported.

[0056] In the above scheme, the control channel and the measurement reference signal are frequency-division multiplexed within a time-domain symbol.

[0057] In the above scheme, the frequency division multiplexing satisfies at least one of the following characteristics:

[0058] Frequency division multiplexing method using a dressing table structure;

[0059] The number of frequency domain blocks occupied by the control channel is greater than the number of frequency domain blocks occupied by the measurement reference signal;

[0060] The set of frequency domain block indices that the measurement reference signal can occupy is a subset of the set of frequency domain block indices that the control channel can occupy;

[0061] The set of frequency domain block indices that the control channel can occupy includes all frequency domain blocks in the symbol;

[0062] The set of frequency domain blocks occupied by the control channel and the set of frequency domain block indices occupied by the measurement reference signal are set by the receiving end.

[0063] In the above scheme, the frequency domain block of the measurement reference signal in one symbol is larger than the frequency domain block corresponding to the control channel;

[0064] The frequency domain block of the measurement reference signal described in one symbol includes NF frequency domain blocks corresponding to control channels, where NF is an integer greater than 1.

[0065] In the above scheme, the configuration information satisfies at least one of the following characteristics:

[0066] One measurement reference signal port occupies resources in NR symbols of the first time-domain symbol set, where 1 ≤ NR ≤ M;

[0067] A measurement reference signal resource occupies resources in NR1 symbols of the first time-domain symbol set, where 1 ≤ NR1 ≤ M;

[0068] The control channel occupies MC symbols in the second time-domain symbol set where the measurement reference signal is located, 1≤MC≤MCT, wherein the time-domain symbol set where the measurement reference signal is located includes MCT time-domain symbols;

[0069] The measurement reference signal resource occupies resources in the first time domain symbol set, but does not occupy resources outside the first time domain symbol set;

[0070] The measurement reference signal port occupies a portion of the frequency domain block resources in the time domain symbol;

[0071] The control signaling is transmitted in the control channel.

[0072] In the above scheme, NR is 1 and NR1 is 1.

[0073] In the above scheme, a measurement reference signal resource occupies resources in the first time-domain symbol set and resources outside the first time-domain symbol set;

[0074] A measurement reference signal port occupies resources in the first time domain symbol set and resources outside the first time domain symbol set.

[0075] In the above scheme, the second time-domain symbol set satisfies at least one of the following characteristics:

[0076] The second time-domain symbol set is the last element of the downlink transmission domain in the first time unit;

[0077] The interval between the starting symbol of the second time-domain symbol set and the starting position of the first time unit is x time-domain symbols, where x is a natural number greater than 0;

[0078] The time-domain symbols in the second time-domain symbol set are consecutive;

[0079] The first time unit is the time unit in which the second time domain symbol set is located.

[0080] In the above scheme, the first time domain symbol set and / or the second time domain symbol set appear in a set time unit, wherein the measurement reference signal cannot be transmitted on the first time domain symbol set where the control channel is located in an unset time unit, or the control channel cannot be transmitted in the second time domain set where the measurement reference signal is located in an unset time unit;

[0081] The set time unit index is sent to the receiving end via signaling.

[0082] In the above scheme, the time-domain symbol index range occupied by the measurement reference signal in the configuration information of the measurement reference signal includes one or more time-domain symbols starting from the second time unit;

[0083] The second time unit is the time unit for sending the measurement reference signal.

[0084] In the above scheme, the time-domain symbol set occupied by the control channel in the second time-domain symbol set is a subset of the second time-domain symbol set.

[0085] In the above scheme, the control channel satisfies at least one of the following characteristics:

[0086] The smallest mapping unit of the control channel is a comb frequency domain block in one symbol;

[0087] The smallest mapping unit of the control channel is a subcarrier group in a comb frequency domain block of a symbol, wherein a comb frequency domain block includes more than one subcarrier group.

[0088] In the above scheme,

[0089] One time-domain symbol is one OFDM symbol;

[0090] The control channel is a downlink control channel;

[0091] The time unit is a subframe;

[0092] The control signaling is proprietary control signaling.

[0093] This application also provides a communication device, including: a memory, and one or more processors;

[0094] The memory is configured to store one or more programs;

[0095] When the one or more programs are executed by the one or more processors, the one or more processors implement the method described in any of the above embodiments.

[0096] This application also provides a storage medium storing a computer program, which, when executed by a processor, implements the methods described in any of the above embodiments.

[0097] In the technical solution of this application embodiment, the measurement reference signal is configured to occupy the frequency domain resources in the first time domain symbol set where the control channel is located. The configuration information of the measurement reference signal or the control channel is sent through control signaling. The measurement reference signal is sent in N set time units. And / or the control channel is sent in the second time domain symbol set where the measurement reference signal is located. The time domain symbol set includes M symbols, where M and N are natural numbers. The measurement reference signal is a measurement reference signal port or a measurement reference signal resource, and the measurement reference signal resource includes at least one measurement reference signal port. By adopting the technical solution of this application embodiment, the problem of resource waste caused by signaling notification and time-division transmission of reference signals when dynamically triggering channel measurement signals is solved. Moreover, it can increase the processing time of the terminal for processing the measurement reference signal, enabling the terminal to quickly provide feedback on the measurement results, or even report the measurement results in the same time unit. Meanwhile, this application embodiment considers an application scenario where a measurement reference signal resource pool is configured at a higher level, but the transmission of measurement reference signals is on demand. In this case, the measurement reference signals to be transmitted on demand are notified in the measurement reference signal resource pool, so that the transmitting end can transmit measurement reference signals on demand while also effectively improving the resource utilization rate of triggering measurement reference signals. Attached Figure Description

[0098] Figure 1a Figure 1 shows an example of measurement reference signals and control signaling being transmitted on the same symbol;

[0099] Figure 1b This is an example of measurement reference signals and control signaling being transmitted on the same symbol. Figure 2 ;

[0100] Figure 1c Figure 1 illustrates an example where the measurement reference signal and control signaling are transmitted on the same symbol, and the measurement reference signal occupies resources outside the set of time-domain symbols.

[0101] Figure 1d This is an example where the measurement reference signal and control signaling are transmitted on the same symbol, and the measurement reference signal occupies resources outside the set of time-domain symbols. Figure 2 ;

[0102] Figure 1eFigure 3 shows an example where the measurement reference signal and control signaling are transmitted on the same symbol, and the measurement reference signal occupies resources outside the set of time-domain symbols.

[0103] Figure 1f Figure 4 shows an example where the measurement reference signal and control signaling are transmitted on the same symbol, and the measurement reference signal occupies resources outside the set of time-domain symbols.

[0104] Figure 2 This is an example diagram showing the trigger signaling for notifying the measurement reference signal and the time-division transmission of the measurement reference signal;

[0105] Figure 3a Figure 1 shows an example of different frequency domain blocks formed by using a comb structure on the symbol;

[0106] Figure 3b This is an example of using a comb structure to form different frequency domain blocks on the symbol. Figure 2 ;

[0107] Figure 4a This is an example diagram showing the time-domain symbol set occupying the adjacent downlink control domain within a time unit;

[0108] Figure 4b This is an example diagram showing the time-domain symbol set occupying an intermediate symbol in a time unit;

[0109] Figure 4c Figure 1 shows an example of how the time-domain symbol set occupies the last position of the downlink transmission domain in a time unit.

[0110] Figure 4d Figure 1 shows an example of how the time-domain symbol set occupies the last position of the downlink transmission domain in a time unit.

[0111] Figure 4e This is an example diagram of the time-domain symbol set in the configured T time units;

[0112] Figure 4f This is an example diagram showing the differences between the RF beam of the downlink control domain and the RF beam of the measurement reference signal;

[0113] Figure 5a Figure 1 shows an example of how the time-domain symbol set occupies the entire downlink transmission domain within a time unit.

[0114] Figure 5b This is an example of the time-domain symbol set occupying the entire downlink transmission domain in one time unit. Figure 2 ;

[0115] Figure 5c Figure 3 shows an example of how the time-domain symbol set occupies the entire downlink transmission domain within a time unit;

[0116] Figure 5d This is an example diagram showing that the time-domain symbols that the control channel can occupy are a subset of the time-domain symbols that the measurement reference signal can occupy;

[0117] Figure 6 This is an example diagram where the first control information and the measurement reference signal are not in the same time unit;

[0118] Figure 7 This is an example diagram showing how to obtain measurement results by using the control channel demodulated reference signal as the measurement reference signal in one measurement cycle;

[0119] Figure 8 This is an example diagram showing how different frequency domain blocks are obtained by using the comb polling results of symbols in the control channel;

[0120] Figure 9 This is a flowchart illustrating the method for transmitting measurement reference signals and control channels according to an embodiment of this application.

[0121] Figure 10 This is a schematic diagram of the structural composition of the measurement reference signal and control channel transmission device according to an embodiment of this application. Detailed Implementation

[0122] The embodiments of this application will be described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this application.

[0123] Figure 9 This is a flowchart illustrating the method for transmitting measurement reference signals and control channels according to an embodiment of this application. Figure 9 As shown, the method for transmitting the measurement reference signal and the control channel includes the following steps:

[0124] Step 901: Configure the measurement reference signal to occupy the frequency domain resources in the first time domain symbol set where the control channel is located.

[0125] Step 902: Send the configuration information of the measurement reference signal or the control channel via control signaling; and / or send the control channel in the second time-domain symbol set where the measurement reference signal is located.

[0126] The time-domain symbol set includes M symbols, where M and N are natural numbers; the measurement reference signal is either a measurement reference signal port or a measurement reference signal resource, and the measurement reference signal resource includes at least one measurement reference signal port.

[0127] The measurement reference signal is transmitted in N time units.

[0128] In this embodiment of the application, the configuration information includes at least one of the following:

[0129] The time-domain symbol index occupied by the measurement reference signal in the first time-domain symbol set, the frequency-domain block index of the measurement reference signal in the time-domain symbol, the indication information of whether the measurement reference signal is transmitted, the indication information of the transmission pattern of the measurement reference signal in the frequency-domain block, the indication information of whether channel state information (CSI) needs to be reported, the time-frequency resources where the CSI information is reported, the configuration information of the first time-domain symbol set, and the configuration information of the second time-domain symbol set;

[0130] One symbol consists of MF frequency domain blocks, where MF is an integer greater than 1.

[0131] In this embodiment of the application, at least one of the following information of the measurement reference signal is set with the receiving end: the symbol index occupied by the measurement reference signal in the first time domain symbol set, the frequency domain block index of the measurement reference signal in the time domain symbol, the indication information of whether the measurement reference signal is transmitted, the indication information of the transmission pattern of the measurement reference signal in the frequency domain block, the indication information of whether CSI information needs to be reported, and the time-frequency resource where the CSI information is reported.

[0132] In this embodiment of the application, the control channel and the measurement reference signal are frequency-division multiplexed within a time-domain symbol.

[0133] In this embodiment of the application, the frequency division multiplexing satisfies at least one of the following characteristics:

[0134] Frequency division multiplexing method using a dressing table structure;

[0135] The number of frequency domain blocks occupied by the control channel is greater than the number of frequency domain blocks occupied by the measurement reference signal;

[0136] The set of frequency domain block indices that the measurement reference signal can occupy is a subset of the set of frequency domain block indices that the control channel can occupy;

[0137] The set of frequency domain block indices that the control channel can occupy includes all frequency domain blocks in the symbol;

[0138] The set of frequency domain blocks occupied by the control channel and the set of frequency domain block indices occupied by the measurement reference signal are set by the receiving end.

[0139] In this embodiment of the application, the frequency domain block of the measurement reference signal in one symbol is larger than the frequency domain block corresponding to the control channel;

[0140] The frequency domain block of the measurement reference signal described in one symbol includes NF frequency domain blocks corresponding to control channels, where NF is an integer greater than 1.

[0141] In this embodiment of the application, the configuration information satisfies at least one of the following characteristics:

[0142] One measurement reference signal port occupies resources in NR symbols of the first time-domain symbol set, where 1 ≤ NR ≤ M;

[0143] A measurement reference signal resource occupies resources in NR1 symbols of the first time-domain symbol set, where 1 ≤ NR1 ≤ M;

[0144] The control channel occupies MC symbols in the second time-domain symbol set where the measurement reference signal is located, 1≤MC≤MCT, wherein the time-domain symbol set where the measurement reference signal is located includes MCT time-domain symbols;

[0145] The measurement reference signal resource occupies resources in the first time domain symbol set, but does not occupy resources outside the first time domain symbol set;

[0146] The measurement reference signal port occupies a portion of the frequency domain block resources in the time domain symbol;

[0147] The control signaling is transmitted in the control channel.

[0148] In one specific implementation, NR is 1, and NR1 is 1.

[0149] In this embodiment of the application, a measurement reference signal resource occupies resources in the first time domain symbol set and resources outside the first time domain symbol set;

[0150] A measurement reference signal port occupies resources in the first time domain symbol set and resources outside the first time domain symbol set.

[0151] In this embodiment of the application, the second time-domain symbol set satisfies at least one of the following characteristics:

[0152] The second time-domain symbol set is the last element of the downlink transmission domain in the first time unit;

[0153] The interval between the starting symbol of the second time-domain symbol set and the starting position of the first time unit is x time-domain symbols, where x is a natural number greater than 0;

[0154] The time-domain symbols in the second time-domain symbol set are consecutive;

[0155] The first time unit is the time unit in which the second time domain symbol set is located.

[0156] In this embodiment of the application, the first time domain symbol set and / or the second time domain symbol set appear in a set time unit, wherein the measurement reference signal cannot be transmitted on the first time domain symbol set where the control channel is located in an unset time unit, or the control channel cannot be transmitted in the second time domain set where the measurement reference signal is located in an unset time unit;

[0157] The set time unit index is sent to the receiving end via signaling.

[0158] In this embodiment of the application, the time domain symbol index range occupied by the measurement reference signal in the configuration information of the measurement reference signal includes one or more time domain symbols starting from the second time unit;

[0159] The second time unit is the time unit for sending the measurement reference signal.

[0160] In this embodiment of the application, the time-domain symbol set occupied by the control channel in the second time-domain symbol set is a subset of the second time-domain symbol set.

[0161] In this embodiment of the application, the control channel satisfies at least one of the following characteristics:

[0162] The smallest mapping unit of the control channel is a comb frequency domain block in one symbol;

[0163] The smallest mapping unit of the control channel is a subcarrier group in a comb frequency domain block of a symbol, wherein a comb frequency domain block includes more than one subcarrier group.

[0164] In this embodiment of the application, one time-domain symbol is one OFDM symbol;

[0165] The control channel is a downlink control channel;

[0166] The time unit is a subframe;

[0167] The control signaling is proprietary control signaling.

[0168] The following section provides a more detailed explanation of the transmission methods for measurement reference signals and control channels in this application embodiment, using specific application scenarios as examples.

[0169] Example 1

[0170] In this example, the measurement reference signal is transmitted on the first time-domain symbol set where the control channel is located, wherein the first time-domain symbol set is in one or more symbols at the beginning of the time unit.

[0171] Specifically, such as Figures 1a-1d In a subframe (i.e., the aforementioned time unit), the first two symbols are the transmission domain of the downlink control channel. That is, the two symbols mentioned above (symbol 0 and symbol 1 as shown in the figure) constitute the aforementioned time domain symbol set.

[0172] like Figures 1a-1d As shown, the measurement reference signal is located in the time-domain symbol set of the control channel. Figures 1a-1d The transmission structure in a time unit (i.e., the time unit mentioned above) is just an example and does not exclude other transmission structure cases. The transmission structure mentioned above is a component of downlink control, downlink data, GP (guard interval), uplink data, and uplink control included in a time unit.

[0173] exist Figure 1a As shown, the transmission of CSI-RS (i.e., the aforementioned measurement reference signal) requires dynamic signaling notification. In particular, when the radio frequency beams of other control information (hereinafter referred to as the second control information, which may include multiple control signaling signals) and the radio frequency beams of the CSI-RS notification control signaling (hereinafter referred to as the first control information) are different, the first and second control information need to be time-division multiplexed. In some cases, an additional OFDM symbol may be needed just for the first control information. Furthermore, in high-bandwidth situations, either the first or second control information may not fill the entire bandwidth, or even the first control information plus a portion of the second control information's control signaling may not fill the entire bandwidth. In such cases, the CSI-RS reference signal can be transmitted on the symbol that notifies the first control information. For example... Figure 1a Symbol 1 shown includes three frequency domain resource blocks. The downlink control information of the first control information (DCI as shown in the figure) occupies the middle frequency domain block, and the other two frequency domain blocks transmit CSI-RS. Figure 1a OFDM0 and OFDM1 have different transmission beams. If using Figure 2 In this configuration, CSI-RS and the first control signaling are transmitted on different symbols. The first control signaling needs to be transmitted on one symbol using RF beam 2, and the CSI-RS signal also needs to be transmitted on another symbol using RF beam 2. The first control signaling does not fully utilize all the resources on OFDM1, and there is no downlink data available for user scheduling under RF beam 2. CSI-RS also does not fully utilize all the resources on OFDM2, resulting in resource waste. Therefore, the following approach is adopted... Figure 1a Compared to the method of using Figure 2 This method achieves higher resource utilization. Moreover... Figure 1a Sending mode and Figure 2 In comparison, this allows for more CSI-RS processing latency for the terminal, enabling it to report CSI based on CSI-RS measurement results within the current time unit. Of course, to further reduce base station radio frequency beam switching, such as... Figure 1bAs shown, the CSI-RS and notification first control information can be placed in OFDM0, and the second control information can be placed in OFDM1. If the radio frequency beams of the downlink data corresponding to the second control information and the second control information are the same, the number of times the base station switches radio frequency beams can be reduced. Figure 1a and Figure 1b In contrast, when the radio frequency beams of the downlink control information and the corresponding downlink data are different, it can increase the processing latency of the terminal. In short... Figure 1a , 1b Each has its advantages and disadvantages. As an example of terminal implementation, neither approach is excluded in this embodiment.

[0174] If measurements are required in other beam directions, and these other beam directions require different RF beams than RF beam 2, then measurement reference signals need to be transmitted on symbols outside the time-domain symbol set, such as... Figure 1c As shown, it is also necessary to measure the beam under RF beam 3, which requires transmitting the remaining CSI-RS signal on symbol 2, or assuming that the mixed beam 1 is measured under RF beam 2 in OFDM1, while the mixed beam 2 under RF beam 2 needs to be measured in OFDM2. Or as... Figure 1d As shown, CSI-RS occupies only a portion of the bandwidth on OFDM2. Preferably, CSI-RS in OFDM2 occupies the frequency band occupied by the DCI portion of OFDM1, that is, one CSI-RS port occupies a portion of the bandwidth of OFDM1 (e.g., Figure 1d Partial bandwidths in intermediate frequency domain blocks 1 and 3 and OFDM2 (such as...) Figure 1d The frequency domain block 2 in the system consists of the union of two bandwidths, which constitutes the system bandwidth.

[0175] In the above embodiments, the RF beam direction is merely an example. When there are multiple RF links, different hybrid beams can be formed through baseband weighting. For a symbol, the focus is mainly on the RF beam direction of the RF link, because a single RF link on a symbol can only correspond to one RF beam direction across its full bandwidth.

[0176] Regarding the relationship between the time-domain symbol set of the measurement reference port and the control channel, in the first implementation, a CSI-RS port occupies some or all of the symbols in the time-domain symbol set, but does not occupy resources on symbols outside the time-domain symbol set. That is, one measurement reference signal port occupies resources in NR symbols of the time-domain symbol set, where 1 ≤ NR ≤ M. Figure 1a In this embodiment, a measurement reference signal port occupies resources in only one symbol. However, this embodiment does not exclude the possibility that a measurement reference port occupies resources in more than one symbol. Figure 1aOne CSI-RS port can occupy resources in both OFDM0 and OFDM1 symbols. Regarding the relationship between the measurement reference port and the time-domain symbol set of the control channel, a second implementation involves a CSI-RS port occupying some or all of the symbols in the time-domain symbol set, and also occupying symbols outside the time-domain symbol set, such as... Figures 1c-1d As shown, a CSI-RS port occupies resources in the time-domain symbol set {symbol 0, symbol 1}, and can also occupy resources in symbol 2.

[0177] A first implementation of the relationship between a CSI-RS resource and the time-domain symbol set of the control channel is that a CSI-RS resource occupies all or part of the symbols in the time-domain symbol set, and does not occupy symbols outside the time-domain symbol set. For example... Figures 1a-1b As shown, a CSI-RS resource only occupies resources in the time-domain symbol set {symbol 0, symbol 1}, and does not occupy symbols outside the time-domain symbol set.

[0178] A first implementation of the relationship between a CSI-RS resource and the time-domain symbol set of the control channel is that a CSI-RS resource occupies all or part of the symbols in the time-domain symbol set, and also occupies resources in symbols outside the time-domain symbol set, such as... Figures 1c-1d As shown, a CSI-RS resource occupies resources in the time-domain symbol set {symbol 0, symbol 1}, and also occupies resources in symbols outside the time-domain symbol set, such as resources in symbol 2.

[0179] In the above embodiments, a CSI-RS resource includes one or more CSI-RS ports. Preferably, one CSI-RS resource corresponds to one CSI-RS configuration information. The time-domain symbol set controlling the channel's time-domain symbol set is... Figures 1a-1d The set consisting of {symbol 0, symbol 1}.

[0180] exist Figures 1a-1d In the time-domain symbol set, the first control signaling and the CSI-RS port (or CSI-RS resource) occupy the same symbol set. However, this embodiment does not exclude the possibility that the symbols occupied by the first control signaling are a subset of the symbol set occupied by the CSI-RS. Figure 1e As shown, the first control signaling resides in OFDM0, but the CSI-RS can occupy resources on the {OFDM0, OFDM1} symbols. Of course, this embodiment does not preclude the possibility that the symbols occupied by the CSI-RS in the time-domain symbol set are a subset of the symbols occupied by the first control signaling in the time-domain symbol set, such as... Figure 1f As shown.

[0181] The first implementation of the symbols included in the time-domain symbol set is at the time unit level. That is, the symbols included in the time-domain symbol set are the symbols that transmit all control information in this time unit, such as symbols occupied by the PDCCH (Downlink Control Channel). This PDCCH transmits all control information that needs to be transmitted in this time unit, or the control information transmitted by this PDCCH includes control information from multiple users. The number of symbols included in the PDCCH in each time unit can be notified through information similar to PCFICH. Each time unit is variable, or semi-statically configured so that the symbols in the symbol set in each time unit remain unchanged for a period of time. When it is necessary to change the symbols in the symbol set, it can be notified through signaling. The signaling can be dynamic signaling or semi-static signaling.

[0182] The second implementation of the symbols included in the time-domain symbol set is UE-specific, meaning the number of OFDM symbols included in the time-domain symbol set is UE-specific. In the same time unit, user 1's time-domain symbol set only contains OFDM0, while user 2's time-domain symbol set includes symbols 0 and 1. For example, by configuring signaling, the blind detection range of user 1's control channel is symbol 0, and the blind detection range of user 2's control channel is both symbol 0 and symbol 1.

[0183] In the above implementation, the CSI-RS and control channel are frequency-division multiplexed. One method of frequency-division multiplexing is as follows: Figures 1a-1d Each frequency domain block contains consecutive subcarriers. The second method of frequency division multiplexing is a comb structure, where frequency domain blocks take turns occupying subcarriers. For example... Figure 3a As shown, the subcarriers in a symbol are divided into frequency domain block 1 and frequency domain block 2 according to a polling combing method, where frequency domain block 1 is used for the control channel and frequency domain block 2 is used for the measurement reference signal. Or as... Figure 3b As shown, the subcarriers in a symbol are divided into MF frequency domain blocks according to a polling combing method. Preferably, MF = 12n or 16n, where n is an integer greater than or equal to 1. Of course, other values ​​of MF are not excluded in this embodiment. Each control signaling (similar to DCI in LTE) can occupy one or more combing frequency domain blocks. Each measurement reference signal port can occupy one frequency domain block, and a measurement reference signal resource can include multiple ports, so a measurement reference signal resource can occupy multiple combing frequency domain blocks. Different ports in a measurement signal resource can be multiplexed using frequency division + code division. To ensure the uniformity of the terminal detection control channel, the multiplexing method of different control signaling in the control channel preferably also adopts a combing structure, i.e., as shown in the figure. Figure 3b As shown, each symbol in the control channel (e.g.) Figures 1a-1dSymbols 0 and 1 in the code both use a combo multiplexing method to divide the frequency into MF frequency domain blocks. The smallest resource block mapped by a control signaling (similar to the REG (resource element group) in LTE) is one frequency domain block. Of course, a control signaling can occupy multiple frequency domain blocks. Alternatively, when the system bandwidth is very large, the above-mentioned frequency domain block can be divided into multiple segments, such as... Figure 3b As shown, all subcarriers in the first frequency domain block are divided into four resource groups, each resource group being a REG. Resources within a resource group are spaced MF subcarriers apart, or the space between resources within a resource group is x1 × MF subcarriers, where x1 is a positive integer. Preferably, x1 is the number of resource groups included in a frequency domain block. The terminal first searches for control signaling in the search space. Preferably, the union of the search spaces of different users covers the entire system bandwidth of the symbol. After the terminal finds the first control information, the first control information informs the frequency domain block index occupied by the measurement reference signal. Alternatively, the first control information only indicates that the measurement reference signal has been transmitted in the time domain symbol set, the frequency domain block index occupied by the measurement reference signal is fixed, and / or the symbol occupied by the measurement reference signal in the time domain symbol set is fixed, or the time domain symbol occupied by the measurement reference signal is obtained based on the time domain symbol where the first control information is located. The first control information only needs to configure information such as the number of ports in a measurement reference resource. When a frequency domain block is further divided into multiple resource groups, the measurement reference signal can occupy all resources in one frequency domain block, or it can occupy a portion of the resource groups in one frequency domain block. The index of the occupied resource group is fixed or indicated by control signaling. The advantage of using the combinator frequency division multiplexing method for the above-mentioned frequency domain blocks is that when the measurement reference signal and the control channel are frequency-division multiplexed, the measurement reference signal can be transmitted across the full bandwidth.

[0184] In the above embodiments, when the control channel (including first control information and second control information) and measurement reference signal in a symbol can be frequency-division multiplexed, but the control channel and measurement reference signal are transmitted on demand, the first approach is that the frequency domain blocks that the control channel can occupy are all the frequency domain blocks in a symbol, the first control information indicates the frequency domain blocks occupied by the measurement reference signal, or the index of the frequency domain blocks occupied by the measurement reference signal is fixed. That is, the set of frequency domain blocks occupied by the measurement reference signal is a subset of the frequency domain blocks occupied by the control channel. In the second embodiment of this example, the frequency domain blocks that the control channel can occupy are partial frequency domain blocks, and the frequency domain blocks that the measurement reference signal can occupy are also partial frequency domain blocks. There can be an intersection between the two sets of frequency domain blocks, but there is no subset relationship between them. The intersection may even be empty.

[0185] In this embodiment, the first control signaling transmits configuration information for the measurement reference signal. This configuration information includes at least one of the following: the symbol index occupied by the measurement reference signal in the time-domain symbol set; the frequency-domain block index within the symbol; an indication of whether the measurement reference signal is transmitted in the symbol; a transmission pattern indication of the symbol in the frequency-domain block; an indication of whether CSI information needs to be reported; and the time-frequency resources where the CSI information is reported. The transmission pattern includes transmission density and port multiplexing mode. Specifically, the transmission density includes the transmission density in the frequency-domain block or the resource group index occupied in the frequency-domain block. The multiplexing mode of the multiple ports includes the code division multiplexing length and the time division / frequency division / code division multiplexing mode.

[0186] In this embodiment, one or more of the following information of the measurement reference signal are set by the transmitting end and the receiving end: the symbol index occupied by the measurement reference signal in the time-domain symbol set, the frequency-domain block index in the symbol, the indication information of whether the measurement reference signal is transmitted in the symbol, the transmission pattern indication information of the symbol in the frequency-domain block, the indication information of whether CSI information needs to be reported, and the time-frequency resource where the CSI information is reported. The transmission pattern includes transmission density and port multiplexing mode. Specifically, the transmission density includes the transmission density in the frequency-domain block or the resource group index occupied in the frequency-domain block. The multiplexing mode of the multiple ports includes the code division multiplexing length and the time division / frequency division / code division multiplexing mode.

[0187] In the above embodiments, the measurement reference signal may also be a beam measurement reference signal (BRS), a beam refinement reference signal (BRRS), a channel measurement reference signal (CSI-RS), or other equivalent names. In short, it is a measurement reference signal for measuring the channel state, where the channel state includes the measurement of the beam state, and this does not constitute an undue limitation on this application.

[0188] A time unit can be a subframe or an interval, and an interval can include one or more subframes.

[0189] In this embodiment, the symbol can be an OFDM symbol.

[0190] In this embodiment, the transmitting end can be a base station, and the receiving end can be a terminal. Of course, other implementation entities are not excluded in this embodiment.

[0191] Example 2

[0192] In this embodiment, the control channel is transmitted in the second time-domain symbol set (hereinafter referred to as time-domain symbol) where the measurement reference signal is located. The time-domain symbol set is not at the beginning of a time unit, or the starting symbol index of the time-domain symbol set is not 0, that is, the starting symbol of the time-domain symbol set and the beginning position of the time unit are separated by x symbols, where x is an integer greater than 0, or the time-domain symbol set includes other time-domain symbols in addition to the time-domain symbols where the downlink control domain is located.

[0193] like Figures 4a-4d The diagram shows the location of the time-domain symbol set. The time-domain symbol set in the diagram includes two symbols; this is just an example and does not exclude other possible numbers of symbols. Figure 4a The symbols in the time-domain symbol set described herein include those immediately following the downlink control domain; Figure 4b The start symbol and the end symbol of the downlink control domain in the time-domain symbol set described herein are separated by several symbols, such as {symbol 5, symbol 6}; Figure 4c The time-domain symbol set mentioned above includes time-domain symbols at the end of the downlink transmission domain in a time unit, such as symbols {10, 11}, or the time-domain symbol set is located at the end of a time unit, such as... Figure 4d The symbol set shown consists of {symbol 12, symbol 13}.

[0194] Furthermore, the aforementioned time-domain symbol set exists only within the configured time unit, such as... Figure 4e As shown, the signaling configuration may transmit a measurement reference signal in the time domain symbol set during time units n to n+T. Whether or not to transmit this signal is controlled by the base station. If the signal is transmitted, the base station will notify the first control information. Therefore, the terminal first detects the first control information in time units n to n+T. If the first control information is detected, the measurement reference signal is then detected. Furthermore, the terminal can also perform rate matching based on the detected first control information. Figures 4a-4d In this approach, the first method requires the terminal to search for the control channel in both the downlink control domain and the time-domain symbol set. The second method allows the terminal to detect only one of them. Preferably, the terminal detecting the control channel in the time-domain symbol set does not need to detect the control channel in the downlink control domain. The third method configures the terminal to detect both, or only one of them. That is, in time units n to n+T, the time-domain symbol set may contain a multiplexing pattern of control signaling and measurement reference signals, but not in other time units. Alternatively, such time units may appear periodically over a period of time. In undefined time units, the terminal does not detect the control channel in the time-domain symbol set outside the control channel domain, where the time-domain symbol set is... Figures 4a-4d The time domain symbol.

[0195] In this embodiment, preferably, the control signaling transmitted in the time-domain symbols is common control signaling, so all terminals can know that measurement reference signals are transmitted on these time-domain symbols. Of course, if the configuration of these time-domain symbol sets is UE-specific, then only the notified terminals will detect these common control signaling. However, if the configuration of the time-domain symbol sets is common, terminals that do not need to measure these measurement reference signals can perform rate matching based on the obtained common control signaling. Of course, the aforementioned control signaling can also be UE-specific. For example, in time unit n to time unit n+T, the terminal detects the control signaling in the downlink control domain and also detects the control signaling in the time-domain symbols to obtain the number of time-domain symbols occupied by the measurement reference signal, or the index of the time-domain symbol, thereby enabling rate matching. For example, terminal 1 detects that in... Figure 1a The downlink control domain of the time unit detects control signaling indicating the time-frequency resources occupied by its downlink data information, such as occupying multiple PRBs. A PRB starts from symbol 2. The terminal further detects whether measurement reference signals are transmitted on symbols 2 and 3 by detecting control signaling in symbols 2 and 3. If first control information is detected, and rate matching is performed based on the transmission status of the measurement reference signals indicated by the first control information, the terminal considers the starting symbol of its downlink data domain to be symbol 4. Alternatively, if the configuration information of the measurement reference signals indicates the symbols occupied by the measurement reference signals, such as indicating that all measurement reference signals only occupy resources in symbol 2, the terminal considers the starting symbol of its downlink data domain to be symbol 3. Or, if the measurement reference signals occupy frequency domain resources in symbols 2 and 3, the unoccupied frequency domain portion is considered data transmission, and data transmission rate matching is performed. Alternatively, for symbols 2 and 3 where control signaling and measurement reference signals have been transmitted, the resources after discarding them are considered data transmission. Alternatively, for these time units, it is assumed that there is no data transmission on the measurement reference signal symbol. In this case, it is necessary to notify the symbol index that needs to be emptied during data transmission. This can be done in the relevant control information corresponding to the data transmission. The range of the emptied symbol index is larger than the range of the emptied symbol index in a general time unit. "General" refers to time units without the time domain symbol set. For example, emptying a symbol in a general time unit requires 2 bits, while emptying a symbol in a time unit with the time domain symbol set requires 3 bits. In short, the number of bits for notifying the time domain resources is determined according to the time unit type. The first time unit type is a unit with the time domain symbol set, and the second time unit type is a unit without the time domain symbol set.

[0196] exist Figures 4a-4dThe minimum resource unit of a control signaling in the downlink control domain and the minimum resource unit of a control signaling in the time domain symbol set can be the same or different. Preferably, the minimum resource unit of the control signaling in the time domain symbol set can be... Figures 3a-3b A frequency domain block in the dressing structure shown, or Figure 3b A resource group constitutes a frequency domain block. However, the minimum resource unit of a control signaling ...

[0197] The time-domain symbol set can also be as follows: Figures 5a-5b As shown, the time-domain symbol includes all downlink transmission domains of a time unit, or even downlink transmission domains of multiple time units. Figures 5a-5b In the first approach, the terminal detects only control signaling that notifies the measurement reference signal of its configuration information on each symbol of the time-domain symbol set. In the second approach, the terminal detects general downlink control signaling on one or more initial OFDM symbols, where the general downlink control signaling includes configuration information and data scheduling information for the measurement reference signal. The terminal then detects the configuration information for the measurement reference signal on symbols following the initial one or more symbols, such as... Figure 5c As shown. At this time, since the configured time domain symbol may or may not transmit a measurement reference signal, when no measurement reference signal is transmitted, scheduling information can be transmitted in the preceding downlink control domain, thus allowing downlink data information to be transmitted in this time unit, or in... Figure 5b Downlink control signaling is also possible within the time units shown. In this case, the set of time units containing the time domain symbols is preferably non-contiguous; for example, in time units n to n+T, one time unit is [missing information] within every T1 time units. Figures 4a-4d ,or Figures 5a-5c The structure is such that the time domain symbol set is not present in other time units, thereby reducing the complexity of checking terminal detection and control information.

[0198] In the aforementioned time-domain symbol set, when the time-domain symbol set is outside the downlink control domain, the first approach is that the terminal detects first control information on each symbol in the time-domain symbol set, and the first control information can be transmitted on each symbol in the time-domain symbol set. The second approach is that the terminal detects the control channel on each symbol in the time-domain symbol set, and the first control information is transmitted on some symbols in the time-domain symbol set. The third approach is that the terminal detects the control channel on some symbols in the time-domain symbol set, where some symbols are configured or set with the base station. For example... Figure 5dAs shown, control signaling is sent on even-numbered symbols. The terminal only needs to detect the control channel on even-numbered symbols. For example, if terminal 1 detects the first control information on symbol 2, the first control information can instruct the measurement reference signal of terminal 1 to form the time-domain symbol index of the time-domain symbol set {symbol 0 to symbol 13}. That is, at this time, the measurement reference signal of terminal 1 can occupy any resource in symbol 0 to symbol 13.

[0199] In this embodiment, the multiplexing method of the measurement reference signal and the first control information in the time-domain symbols can adopt the method of frequency division multiplexing in Embodiment 1. However, unlike Embodiment 1, the control information transmitted in the time-domain symbol set may be different. In the first implementation, the time-domain symbol set only contains the first control information, which is used to configure the measurement reference signal resources. In the second implementation, the time-domain symbol set may transmit not only the first control information but also the second control information, because there may be more opportunities for beam switching, and the measurement reference signal and the second control information can be sent at these beam switching events. Figure 4f As shown, when the radio frequency beam in the downlink control domain is beam 1, and the radio frequency beam on the time domain symbol set (the set consisting of {symbol 2, symbol 3}) is beam 2, then the first control information can be sent to user 2 on symbols 2 and 3 to instruct user 2 to process the measurement reference signal. Furthermore, the second control information can be sent to user 1 on symbols 2 and 3, wherein the second measurement reference number includes control information other than the measurement reference signal.

[0200] In this embodiment, when the time-domain symbol set is large, to reduce the complexity of the terminal detecting the control channel within the time-domain symbol set, the detection range of the terminal can be further determined based on the logical beam on which the terminal resides. Different logical beams result in different detection ranges. For example, if the logical beam is 0, control information only needs to be detected on one symbol in the time-domain symbol set; if the logical beam is 1, control information only needs to be detected on two symbols in the time-domain symbol set. Specifically, if the time-domain symbol set includes two symbols and there are a total of four logical beams, the following table can be established. Thus, the detection range changes with the change in logical beam. The time-domain symbol 0 is the starting symbol in the time-domain symbol set, i.e., the number of the time-domain symbol in Table 1 is the logical number in the time-domain symbol set. Specifically, as in 4a, the time-domain symbol set consists of {symbol 2, symbol 3}, then symbol 0 in Table 1 corresponds to symbol 2.

[0201] Table 1

[0202]

[0203] When the time-domain symbol set does not include the downlink control domain, but the terminal needs to notify the check of the control channel in both the downlink control domain and the time-domain symbol set, such as... Figures 4a-4d In one implementation, the terminal detects the control channel on all symbols in the downlink control domain and determines the detection range of the control channel in the time domain symbol set based on the logical beam index.

[0204] Example 3

[0205] In Embodiments 1 and 2 described above, the first control information indicating the measurement reference signal and the measurement reference signal reside in the same time unit. In this embodiment, the first control information and the measurement reference signal may not reside in the same time unit. Alternatively, the first control information may be higher-layer configuration information. The measurement reference signal may occupy the time domain symbol where the downlink control channel domain is located.

[0206] like Figure 6 As shown, in the i-th time unit, the base station sends the configuration information of the measurement reference signal through control signaling (which can be dynamic control signaling or semi-static control signaling). The measurement reference signal is sent in the i+T1 time unit, where T1 is an integer greater than 0. The measurement reference signal can occupy the resources in the symbols of the downlink control domain in the i+T1 time unit.

[0207] Of course, in this embodiment, it can also be the configuration information of the measurement reference signal sent periodically in the control signaling indication period in the i-th time unit, or the configuration information of the measurement reference signal sent periodically within a period of time, wherein the measurement reference signal can occupy resources in the downlink control domain time domain symbol.

[0208] Example 4

[0209] In this embodiment, the demodulation reference signal in the downlink control domain can be used as a measurement reference signal. The terminal reports the CSI status based on the reception of the demodulation reference signal. The terminal and the base station set the number of demodulation reference signal ports for the control channel. Preferably, there is a correspondence between the demodulation reference signal ports and the logical beams, such as a one-to-one correspondence. Of course, this embodiment does not exclude other correspondences.

[0210] In the first implementation of this embodiment, the base station transmits a demodulation reference signal port as needed, and the terminal measures the performance of each demodulation reference signal in each time unit of a measurement cycle. For example... Figure 7As shown, if the control channel has 16 demodulation reference signal ports (but the base station transmits one or more of the 16 ports as needed in a time unit), the terminal feeds back a 16×T matrix, where the (i, j)th element of the matrix represents the reception status of the i-th demodulation reference signal port in the j-th time unit. Each element is simply 1 bit: 0 indicates that the reception quality of the i-th demodulation reference signal port in the j-th time unit is lower than a predetermined value, and 1 indicates that the reception quality of the i-th demodulation reference signal port in the j-th time unit exceeds the predetermined value. The base station, combining the actual transmission status of the demodulation reference signal ports in each time unit, obtains the link status to the terminal, and can use this feedback to assist in subsequent beam training or data scheduling.

[0211] In the second embodiment of this example, the terminal reports the number of times each demodulated signal port receives data within one measurement cycle, such as... Figure 7 As shown, the terminal feeds back a 16-dimensional vector value for one measurement cycle. The i-th value in the vector represents the number of times the i-th demodulation reference signal port exceeds the predetermined threshold in T time units.

[0212] Of course, in this embodiment, the terminal can further simplify the two feedback methods described above, for example, by only feeding back a matrix or vector of a predetermined dimension. The measurement result can also be obtained by combining the control channel demodulated reference signal with other reference signals.

[0213] Example 5

[0214] In this embodiment, the ability to transmit the measurement reference signal and the control channel in the same time domain symbol is configured. If the configuration is enabled, the measurement reference signal and the control channel can be transmitted in the same time domain symbol; if the configuration is disabled, the measurement reference signal and the control channel cannot be transmitted in the same time domain symbol.

[0215] This configuration can be cell-specific, such as through system message configuration, higher-level configuration, or dynamic signaling configuration.

[0216] Example 6

[0217] In this example, the symbols in the downlink control domain are divided into different frequency domain blocks according to a comb structure. Preferably, a frequency domain block can be further divided into multiple resource groups, such as... Figure 8 As shown, one of the resource groups is the smallest resource unit of a control signaling mapping.

[0218] Preferably, in one embodiment of this invention, a base station can transmit control channels only in a frequency domain block group within a single symbol, wherein the frequency domain block group includes at least one frequency domain block. For example, the frequency domain block occupied by a base station's control channel can be obtained based on the base station ID, so that different base stations can occupy different frequency domain blocks, thereby avoiding interference between control channels between cells. Moreover, the frequency domain block resources occupied by a cell can be switched.

[0219] The different logical beams described in this application can be distinguished by one or more of the following resources: beam resources, time resources, frequency domain resources, sequence resources, port resources, and sector resources.

[0220] Figure 10 This is a schematic diagram illustrating the structural composition of the measurement reference signal and control channel transmission apparatus according to an embodiment of this application, as shown below. Figure 10 As shown, the device includes:

[0221] Configuration unit 1001 is used to configure the frequency domain resources in the first time domain symbol set where the measurement reference signal occupies the control channel;

[0222] The transmitting unit 1002 is configured to transmit the configuration information of the measurement reference signal or the control channel via control signaling; and / or transmit the control channel in the second time-domain symbol set where the measurement reference signal is located;

[0223] The time-domain symbol set includes M symbols, where M and N are natural numbers; the measurement reference signal is either a measurement reference signal port or a measurement reference signal resource, and the measurement reference signal resource includes at least one measurement reference signal port.

[0224] The measurement reference signal is transmitted in N time units.

[0225] In this embodiment of the application, the configuration information includes at least one of the following:

[0226] The time-domain symbol index occupied by the measurement reference signal in the first time-domain symbol set, the frequency-domain block index of the measurement reference signal in the time-domain symbol, the indication information of whether the measurement reference signal is transmitted, the indication information of the transmission pattern of the measurement reference signal in the frequency-domain block, the indication information of whether channel state information (CSI) needs to be reported, the time-frequency resources where the CSI information is reported, the configuration information of the first time-domain symbol set, and the configuration information of the second time-domain symbol set;

[0227] One symbol consists of MF frequency domain blocks, where MF is an integer greater than 1.

[0228] In this embodiment of the application, at least one of the following information of the measurement reference signal is set with the receiving end: the symbol index occupied by the measurement reference signal in the first time domain symbol set, the frequency domain block index of the measurement reference signal in the time domain symbol, the indication information of whether the measurement reference signal is transmitted, the indication information of the transmission pattern of the measurement reference signal in the frequency domain block, the indication information of whether CSI information needs to be reported, and the time and frequency resources where the CSI information is reported.

[0229] In this embodiment of the application, the control channel and the measurement reference signal are frequency-division multiplexed within a time-domain symbol.

[0230] In this embodiment of the application, the frequency division multiplexing satisfies at least one of the following characteristics:

[0231] Frequency division multiplexing method using a dressing table structure;

[0232] The number of frequency domain blocks occupied by the control channel is greater than the number of frequency domain blocks occupied by the measurement reference signal;

[0233] The set of frequency domain block indices that the measurement reference signal can occupy is a subset of the set of frequency domain block indices that the control channel can occupy;

[0234] The set of frequency domain block indices that the control channel can occupy includes all frequency domain blocks in the symbol;

[0235] The set of frequency domain blocks occupied by the control channel and the set of frequency domain block indices occupied by the measurement reference signal are set by the receiving end.

[0236] In this embodiment of the application, the frequency domain block of the measurement reference signal in one symbol is larger than the frequency domain block corresponding to the control channel;

[0237] The frequency domain block of the measurement reference signal described in one symbol includes NF frequency domain blocks corresponding to control channels, where NF is an integer greater than 1.

[0238] In this embodiment of the application, the configuration information satisfies at least one of the following characteristics:

[0239] One measurement reference signal port occupies resources in NR symbols of the first time-domain symbol set, where 1 ≤ NR ≤ M;

[0240] A measurement reference signal resource occupies resources in NR1 symbols of the first time-domain symbol set, where 1 ≤ NR1 ≤ M;

[0241] The control channel occupies MC symbols in the second time-domain symbol set where the measurement reference signal is located, 1≤MC≤MCT, wherein the time-domain symbol set where the measurement reference signal is located includes MCT time-domain symbols;

[0242] The measurement reference signal resource occupies resources in the first time domain symbol set, but does not occupy resources outside the first time domain symbol set;

[0243] The measurement reference signal port occupies a portion of the frequency domain block resources in the time domain symbol;

[0244] The control signaling is transmitted in the control channel.

[0245] In one specific implementation, NR is 1, and NR1 is 1.

[0246] In this embodiment of the application, a measurement reference signal resource occupies resources in the first time domain symbol set and resources outside the first time domain symbol set;

[0247] A measurement reference signal port occupies resources in the first time domain symbol set and resources outside the first time domain symbol set.

[0248] In this embodiment of the application, the second time-domain symbol set satisfies at least one of the following characteristics:

[0249] The second time-domain symbol set is the last element of the downlink transmission domain in the first time unit;

[0250] The interval between the starting symbol of the second time-domain symbol set and the starting position of the first time unit is x time-domain symbols, where x is a natural number greater than 0;

[0251] The time-domain symbols in the second time-domain symbol set are consecutive;

[0252] The first time unit is the time unit in which the second time domain symbol set is located.

[0253] In this embodiment of the application, the first time domain symbol set and / or the second time domain symbol set appear in a set time unit, wherein the measurement reference signal cannot be transmitted on the first time domain symbol set where the control channel is located in an unset time unit, or the control channel cannot be transmitted in the second time domain set where the measurement reference signal is located in an unset time unit;

[0254] The set time unit index is sent to the receiving end via signaling.

[0255] In this embodiment of the application, the time domain symbol index range occupied by the measurement reference signal in the configuration information of the measurement reference signal includes one or more time domain symbols starting from the second time unit;

[0256] The second time unit is the time unit for sending the measurement reference signal.

[0257] In this embodiment of the application, the time-domain symbol set occupied by the control channel in the second time-domain symbol set is a subset of the second time-domain symbol set.

[0258] In this embodiment of the application, the control channel satisfies at least one of the following characteristics:

[0259] The smallest mapping unit of the control channel is a comb frequency domain block in one symbol;

[0260] The smallest mapping unit of the control channel is a subcarrier group in a comb frequency domain block of a symbol, wherein a comb frequency domain block includes more than one subcarrier group.

[0261] In this embodiment of the application, one time-domain symbol is one OFDM symbol;

[0262] The control channel is a downlink control channel;

[0263] The time unit is a subframe;

[0264] The control signaling is proprietary control signaling.

[0265] Those skilled in the art should understand that Figure 10 The functions of each unit in the measurement reference signal and control channel transmission device shown can be understood by referring to the relevant description of the aforementioned measurement reference signal and control channel transmission method. Figure 10 The functions of each unit in the measurement reference signal and control channel transmitting device shown can be implemented by a program running on a processor or by specific logic circuits.

[0266] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0267] This application is described with reference to flowchart illustrations or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of a flowchart illustration or block diagram, and combinations of blocks in a flowchart illustration or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more flowchart illustrations or one or more block diagrams.

[0268] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts or one or more block diagrams.

[0269] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts or one or more block diagrams.

[0270] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for receiving a measurement reference signal, characterized in that, The method includes: The system receives control signaling, wherein the control signaling includes configuration information for a measurement reference signal, the configuration information being used to configure the measurement reference signal in a frequency domain resource within a first time-domain symbol set for detecting the downlink control channel; the measurement reference signal is a channel state information reference signal (CSI-RS). Receive the measurement reference signal according to the control signaling; The measurement reference signal is included in a measurement reference signal resource, and the measurement reference signal resource includes at least one measurement reference signal port; Wherein, in a time-domain symbol of the first time-domain symbol set, the intersection between the measurement reference signal and the resource block occupied by the downlink control channel is empty, and a resource block includes consecutive subcarriers; Receive semi-static signaling, wherein the semi-static signaling includes information about a first time-domain symbol set.

2. The method according to claim 1, characterized in that, The semi-static signaling is UE-specific control signaling; The first time-domain symbol set includes time-domain symbols with indices from 0 to B in a time unit, where B is a non-negative integer less than or equal to 3.

3. The method according to claim 1, characterized in that, The configuration information includes at least one of the following: The frequency domain block index occupied by the measurement reference signal in the time domain symbol; Indicator information on whether Channel Status Information (CSI) needs to be reported; The time and frequency resources where the CSI information is reported; One time-domain symbol consists of MF frequency-domain blocks, where MF is an integer greater than 1.

4. The method according to claim 1, characterized in that, In the time domain symbol, the downlink control channel and the measurement reference signal are frequency-division multiplexed; Wherein, the intersection between the measurement reference signal and the resource block occupied by the downlink control channel is empty, and a resource block comprises consecutive subcarriers.

5. The method according to claim 1, characterized in that, In the time domain symbol, the measurement reference signal occupies a resource block outside the predetermined frequency domain resource block where the downlink control channel is located; The predetermined frequency domain resource block is the area where the control channel is located, and the predetermined frequency domain resource block satisfies one of the following characteristics: the resources occupied by the predetermined frequency domain resource block are fixed; the resources occupied by the predetermined frequency domain resource block are notified by system messages; the resources occupied by the predetermined frequency domain resource block are configured by higher-layer signaling; or the resources occupied by the predetermined frequency domain resource block are notified by dynamic control signaling.

6. The method according to claim 1, characterized in that, Including one of the following: In one time-domain symbol, the beam of the control channel is the same as the beam of the measurement reference signal; If the two signals and / or channels have different beams, the two signals and / or channels are time-division multiplexed. Two signals and / or channels in a time-domain symbol have the same beam.

7. The method according to claim 1, characterized in that, The first time-domain symbol set includes time-domain symbols from the initial time-domain symbol set in a second time unit.

8. The method according to claim 1, characterized in that, It also includes at least one of the following: The time-domain symbol for detecting the downlink control channel in each time unit is determined based on higher-layer control signaling; The index of the time-domain symbol used to detect the downlink control channel in the first time-domain symbol set is determined based on the UE-specific control signaling, wherein the semi-static signaling includes the UE-specific control signaling.

9. The method according to claim 1, characterized in that, Also includes: The measurement reference signal occupies any one or more of the 14 time-domain symbols included in a time unit.

10. The method according to claim 1, characterized in that, The control signaling is the dynamic control signaling in the i-th time unit, and the measurement reference signal is received in the (i+T1)-th time unit; where T1 is an integer greater than 0.

11. A method for transmitting a measurement reference signal, characterized in that, The method includes: Configuration information for a measurement reference signal is transmitted via control signaling. This configuration information is used to configure the measurement reference signal in the frequency domain resources of the first time-domain symbol set for detecting the downlink control channel. The measurement reference signal is a channel state information reference signal (CSI-RS). The measurement reference signal is sent according to the control signaling; The measurement reference signal is included in a measurement reference signal resource, and the measurement reference signal resource includes at least one measurement reference signal port; Wherein, in a time-domain symbol of the first time-domain symbol set, the intersection between the measurement reference signal and the resource block occupied by the downlink control channel is empty, and a resource block includes consecutive subcarriers; Send semi-static signaling, wherein the semi-static signaling includes information about a first time-domain symbol set.

12. The method according to claim 11, characterized in that, The semi-static signaling is UE-specific control signaling; The first time-domain symbol set includes time-domain symbols with indices from 0 to B in a time unit, where B is a non-negative integer less than or equal to 3.

13. The method according to claim 11, characterized in that, The configuration information includes at least one of the following: The frequency domain block index occupied by the measurement reference signal in the time domain symbol; Indicator information on whether Channel Status Information (CSI) needs to be reported; The time and frequency resources where the CSI information is reported; One time-domain symbol consists of MF frequency-domain blocks, where MF is an integer greater than 1.

14. The method according to claim 11, characterized in that, In the time domain symbol, the downlink control channel and the measurement reference signal are frequency-division multiplexed; Wherein, the intersection between the measurement reference signal and the resource block occupied by the downlink control channel is empty, and a resource block comprises consecutive subcarriers.

15. The method according to claim 11, characterized in that, In the time-domain symbol, the measurement reference signal occupies a resource block outside the predetermined frequency-domain resource block where the downlink control channel is located. The predetermined frequency domain resource block is the area where the control channel is located, and the predetermined frequency domain resource block satisfies one of the following characteristics: the resources occupied by the predetermined frequency domain resource block are fixed; the resources occupied by the predetermined frequency domain resource block are notified by system messages; the resources occupied by the predetermined frequency domain resource block are configured by higher-layer signaling; or the resources occupied by the predetermined frequency domain resource block are notified by dynamic control signaling.

16. The method according to claim 11, characterized in that, Including one of the following: In one time-domain symbol, the beam of the control channel is the same as the beam of the measurement reference signal; If the two signals and / or channels have different beams, the two signals and / or channels are time-division multiplexed. Two signals and / or channels in a time-domain symbol have the same beam.

17. The method according to claim 11, characterized in that, The first time-domain symbol set includes time-domain symbols from the initial time-domain symbol set in a second time unit.

18. The method according to claim 11, characterized in that, It also includes at least one of the following: The time-domain symbol for detecting the downlink control channel in each time unit is determined based on higher-layer control signaling; The index of the time-domain symbol used to detect the downlink control channel in the first time-domain symbol set is determined based on the UE-specific control signaling, wherein the semi-static signaling includes the UE-specific control signaling.

19. The method according to claim 11, characterized in that, Also includes: The measurement reference signal occupies any one or more of the 14 time-domain symbols included in a time unit.

20. The method according to claim 11, characterized in that, The control signaling is the dynamic control signaling in the i-th time unit, and the measurement reference signal is received in the (i+T1)-th time unit; where T1 is an integer greater than 0.

21. A device for receiving a measurement reference signal, characterized in that, include: processor; as well as Memory, configured to store instructions; When the instruction is executed by the processor, the processor causes the processor to perform the method as described in any one of claims 1-10.

22. A device for transmitting a measurement reference signal, characterized in that, include: processor; as well as Memory, configured to store instructions; When the instruction is executed by the processor, the processor causes the processor to perform the method as described in any one of claims 11-20.

23. A method for detecting a downlink control channel, characterized in that, include: The downlink control channel is detected in the second time-domain symbol set where the measurement reference signal is located; The measurement reference signal is the Channel State Information Reference Signal (CSI-RS). In one time-domain symbol of the second time-domain symbol set, the intersection between the measurement reference signal and the resource block occupied by the downlink control channel is empty, and a resource block comprises consecutive subcarriers.

24. The method according to claim 23, characterized in that, The second time-domain symbol set satisfies at least one of the following characteristics: The second time-domain symbol set has an interval of x time-domain symbols between its starting symbol and the starting position of the second time unit, where x is a natural number greater than 0; The second time-domain symbol set ends with a symbol y times the end position of the second time unit, where y is a natural number greater than 0. The second time-domain symbol set includes M symbols, where M is a natural number; The time-domain symbols in the second time-domain symbol set are consecutive; Information about the second time-domain symbol set is obtained based on UE-specific control signaling; Information about the second time-domain symbol set is obtained based on public control signaling; The second time-domain symbol set exists periodically.

25. The method according to claim 23, characterized in that, On a time-domain symbol of a second time-domain symbol set containing a downlink control channel and a measurement reference signal, the intersection between the resource blocks occupied by the measurement reference signal and the downlink control channel is empty; In a time-domain symbol of a second time-domain symbol set that includes a downlink control channel and a measurement reference signal, the measurement reference signal occupies a resource block outside the predetermined frequency domain resource block where the downlink control channel is located; The predetermined frequency domain resource block is the area where the control channel is located, and the predetermined frequency domain resource block satisfies one of the following characteristics: the resources occupied by the predetermined frequency domain resource block are fixed; the resources occupied by the predetermined frequency domain resource block are notified by system messages; the resources occupied by the predetermined frequency domain resource block are configured by higher-layer signaling; or the resources occupied by the predetermined frequency domain resource block are notified by dynamic control signaling.

26. The method according to claim 23, characterized in that, The index of the time domain symbol occupied by the measurement reference signal in the base station in the second time domain conforms to the first control information, and is determined according to one of the following: Rate matching information for a data channel is determined based on the first control information; the first control information is common control information. The measurement reference signal is not received on time symbols that are not included in the second time-domain symbol set; The rate matching information includes at least one of the following: the data channel does not occupy the time-domain symbol occupied by the measurement reference signal; in a time-domain symbol, at the location of the measurement reference signal and the downlink control channel, the data channel does not occupy the resource block occupied by the measurement reference signal, nor does it occupy the resource block occupied by the downlink control channel; in the time-domain symbol where the measurement reference signal is located, the data channel does not occupy the resource block occupied by the measurement reference signal.

27. The method according to claim 23, characterized in that, Also includes: Receive signaling information; wherein the signaling information is used to notify the index of time-domain symbols that are not allowed to be occupied by the data channel.

28. The method according to claim 23, characterized in that, At least one of the following: The second time-domain symbol set includes all time-domain symbols in the downlink transmission domain within a time unit; Detect the downlink control channel in the even-indexed time-domain symbols in the second time-domain symbol set; The downlink control channel is detected in the time-domain symbols of a subset of the second time-domain symbol set; The index information of the time domain symbols of the downlink control channel is detected in the second time domain symbol set based on the third signaling information; One downlink control message occupies one time domain symbol in the second time domain symbol set; The second time-domain symbol set includes at least one detection opportunity for detecting the downlink control channel; The common downlink control channel is detected in the second time-domain symbol set.

29. The method according to claim 23, characterized in that, The method includes at least one of the following features: Each time-domain symbol in the second time-domain symbol set represents the detection timing of the control channel; The time-domain symbol used for detecting the downlink control channel is determined based on the logical beam index; There is a mapping relationship between the logical beam index and the time-domain symbol; the gap between the starting position of the second time-domain symbol set and the starting position of the time unit is greater than zero, and the gap between the starting position of the downlink control channel and the starting position of the time unit is equal to zero.

30. The method according to claim 23, characterized in that, The second time-domain symbol set includes any one or more time-domain symbols from the 14 symbols in a time unit.

31. A device for detecting a downlink control channel, characterized in that, include: processor; as well as Memory, configured to store instructions; When the instruction is executed by the processor, the processor causes the processor to perform the method as described in any one of claims 23-30.

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