Signal sending method, communication node and storage medium

Abstract

The invention discloses a signal sending method, a communication node and a storage medium. The method comprises: determining a transmission resource set, the transmission resource set comprising P transmission resources, the transmission resources comprising frequency domain resources and / or code domain resources; and transmitting a first signal, the first signal comprising R IDs, the transmission resource set being used for a second communication node associated with the R IDs to transmit a second signal, and both R and P being integers greater than 1.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and for example, relates to a signal sending method, a communication node, and a storage medium. Background Art

[0002] With the continuous progress of radio technologies, a large number of various radio services have emerged. In addition to cellular services, in Long Term Evolution (LTE) systems and New Radio (NR) systems, there are also Passive Internet of Things (Passive IoT) services or Ambient Internet of Things (Ambient IoT) services.

[0003] In related technologies, in passive IoT or ambient IoT communication technologies, time division multiplexing (TDM) is usually used for communication between a reader and a terminal device. In the communication process between one reader and multiple terminal devices, the uplink signals of multiple terminal devices need to be sent on different time domain resources, and the uplink signals cannot overlap in the time domain. Therefore, the time of the entire communication process is long and the efficiency is low. Summary of the Invention

[0004] An embodiment of this application provides a signal sending method applied to a first communication node. The method includes:

[0005] Determine a set of transmission resources; wherein, the set of transmission resources includes P transmission resources, and the transmission resources include frequency domain resources and / or code domain resources;

[0006] Send a first signal; wherein, the first signal includes R identification codes (IDs), and the set of transmission resources is used for second communication nodes associated with the R IDs to send second signals, and both R and P are integers greater than 1.

[0007] An embodiment of this application provides a signal sending method applied to a second communication node. The method includes:

[0008] Determine a set of transmission resources; wherein, the set of transmission resources includes P transmission resources, and the transmission resources include frequency domain resources and / or code domain resources;

[0009] Receive a first signal; wherein, the first signal includes R identification codes (IDs), and both R and P are integers greater than 1;

[0010] Determine a transmission resource within the set of transmission resources, and send a second signal based on the transmission resource.

[0011] An embodiment of the present application provides a first communication node, including: a processor; the processor is configured to implement the signal sending method of any of the above embodiments when executing a computer program.

[0012] An embodiment of the present application provides a second communication node, including: a processor; the processor is configured to implement the signal sending method of any of the above embodiments when executing a computer program.

[0013] An embodiment of the present application further provides a computer-readable storage medium storing a computer program, and the computer program implements the signal sending method of any of the above embodiments when executed by a processor.

[0014] More descriptions about the above embodiments and other aspects of the present application and their implementation manners are provided in the accompanying drawings description, the specific implementation manner and the claims. Description of the Drawings

[0015] Figure 1 is a networking schematic diagram of a wireless communication network provided by an embodiment;

[0016] Figure 2 is a flowchart of a signal sending method provided by an embodiment;

[0017] Figure 3 is a schematic diagram of a second signal and a transmission resource in a signal sending method provided by an embodiment;

[0018] Figure 4 is another schematic diagram of a second signal and a transmission resource in a signal sending method provided by an embodiment;

[0019] Figure 5 is yet another schematic diagram of a second signal and a transmission resource in a signal sending method provided by an embodiment;

[0020] Figure 6 is still another schematic diagram of a second signal and a transmission resource in a signal sending method provided by an embodiment;

[0021] Figure 7 is another schematic diagram of a second signal and a transmission resource in a signal sending method provided by an embodiment;

[0022] Figure 8 is a schematic diagram of a resource configuration group in a signal sending method provided by an embodiment;

[0023] Figure 9 is a flowchart of another signal sending method provided by an embodiment;

[0024] Figure 10 is a structural schematic diagram of a signal sending device provided by an embodiment;

[0025] Figure 11 is a schematic structural diagram of another signal transmission device provided by an embodiment;

[0026] Figure 12 is a schematic structural diagram of a communication node provided by an embodiment. Detailed implementation manners

[0027] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0028] The signal transmission method provided by the present application can be applied to various wireless communication systems, such as Long Term Evolution (LTE) systems, Fourth Generation Mobile Communication Technology (4G) systems, Fifth Generation Mobile Communication Technology (5G) systems, LTE and 5G hybrid architecture systems, NR systems, Internet of Things, and new communication systems emerging in the future development of communication, such as Sixth Generation Mobile Communication Technology (6G) systems, etc.

[0029] Figure 1 is a schematic networking diagram of a wireless communication network provided by an embodiment. This wireless communication network can be the environmental Internet of Things or the passive Internet of Things in the above wireless communication systems. As Figure 1 shown, the first communication node 11 can communicate with multiple second communication nodes 12. In the related art, the uplink signals of multiple second communication nodes 12 need to be sent to the first communication node 11 on different time domain resources. These multiple uplink signals cannot overlap in the time domain, so the time of the entire communication process is long and the efficiency is low.

[0030] In the embodiments of the present application, a signal transmission method, a communication node, and a storage medium that can run on the above wireless communication network are provided. By using Frequency Division Multiplexing (FDM) and / or Code Division Multiplexing (CDM), the uplink signals of multiple second communication nodes are transmitted in parallel on the same time domain resource, thereby improving the system throughput and communication efficiency and reducing the communication delay.

[0031] Next, the signal transmission method, the communication node, and their technical effects will be described.

[0032] Figure 2It is a schematic flowchart of a signal sending method provided by an embodiment. The signal sending method provided by this embodiment can be applied to a first communication entity. For example, Figure 1 in the first communication entity. As Figure 2 shown, the signal sending method provided by this embodiment includes the following steps.

[0033] Step 201: Determine a set of transmission resources.

[0034] Among them, the set of transmission resources includes P transmission resources. The transmission resources include frequency domain resources and / or code domain resources.

[0035] The frequency domain resources in this embodiment can be transmission subbands, and the code domain resources can be spreading codes. That is, the transmission resources in this embodiment include at least one of transmission subbands and spreading codes.

[0036] In some embodiments, the transmission resources are transmission subbands. The set of transmission resources is a set of transmission subbands, including P transmission subbands. Among them, a transmission subband is a frequency domain resource available for signal transmission. The transmission subband can be a frequency domain resource composed of frequency domain units such as a Bandwidth Part (BWP), a physical resource block, a subcarrier, a subchannel, etc.

[0037] In some embodiments, the transmission subband bandwidth includes a second signal bandwidth and a frequency domain guard interval. The frequency domain guard interval in this embodiment is a frequency domain width reserved to avoid interference between adjacent frequency domain signals. The frequency domain guard interval can be determined according to at least one of the frequency shift value of the second signal, the second signal bandwidth, and the type of the second communication node.

[0038] Among them, the frequency shift value of the second signal is the shift value of the center frequency of the second signal relative to the center frequency of the Carrier Wave (CW). For example, the CW center frequency is f0, and the center frequency of the second signal is shifted by a frequency value f1 relative to f0, that is, the center frequency of the second signal is f0 + f1 or f0 - f1, and the frequency shift value of the second signal is f1. The carrier CW can be used for the second communication node to send a backscatter signal. The type of the second communication node is at least divided into two types. Exemplarily, the type of the second communication node includes a backscatter terminal type and a non-backscatter terminal type.

[0039] In some embodiments, the frequency-domain guard interval is determined according to the frequency shift value of the second signal. Under the method where other influencing factors are fixed, the larger the frequency shift value of the second signal, the larger the frequency-domain guard interval. This is because, under the method where other influencing factors are fixed, the larger the frequency shift value of the second signal, the larger the bandwidth of the second signal and the wider the harmonics of the signal. To avoid harmonic interference with other adjacent frequency band signals, a larger frequency-domain guard interval is reserved.

[0040] In some embodiments, the frequency-domain guard interval is determined according to the bandwidth of the second signal. Among them, the larger the signal bandwidth, the larger the frequency-domain guard interval.

[0041] In some embodiments, the frequency-domain guard interval is determined according to the type of the second communication node. Among them, the frequency-domain guard interval corresponding to the backscatter terminal type is greater than that of the non-backscatter terminal type.

[0042] In some embodiments, the relationship among the number of transmission subbands P, the total frequency band bandwidth F, and the transmission subband bandwidth B included in the transmission resource set satisfies Among them, represents rounding down the result of downward.

[0043] In some embodiments, the transmission subband bandwidth is equal to the sum of the second signal bandwidth and the frequency-domain guard interval. In a specific example, the second signal bandwidth corresponds to the transmission subband bandwidth. For example, the second signal has A possible signal bandwidths, and the A possible signal bandwidths respectively correspond to A transmission subband bandwidths. In another specific example, the number of transmission subbands included in the transmission resource set is determined according to the second signal bandwidth and the total frequency band bandwidth. For example, the second signal bandwidth and the total frequency band bandwidth correspond to the number of transmission subbands included in the transmission resource set. Optionally, in this embodiment, before step 201, the signal sending method provided in this embodiment further includes the following steps: determining the number of transmission subbands according to the total frequency band bandwidth and the transmission subband bandwidth; or determining the number of transmission subbands according to the total frequency band bandwidth and the second signal bandwidth.

[0044] In some embodiments, the transmission resource is an extended code. The transmission resource set is an extended code set, including P extended codes. The extended code in this embodiment refers to an orthogonal or pseudo-orthogonal sequence. The length of the extended code in this embodiment is not limited. For example, the extended code length can be 4 or 8, etc. The extended code length is the number of elements included in an extended code. For example, the length of the extended code {1, 1, -1, -1} is 4.

[0045] In some embodiments, the transmission resources include transmission sub-bands and spreading codes. One transmission resource consists of one transmission sub-band and one spreading code, that is, one transmission resource index corresponds to one transmission sub-band index and one spreading code index. The set of transmission resources contains P transmission resources, where P = K × L, K is the number of transmission sub-bands, and L is the number of spreading codes.

[0046] Step 202: Transmit the first signal.

[0047] Among them, the first signal includes R identification codes (Identity, abbreviated as: ID). The set of transmission resources is used for the second communication nodes associated with the R IDs to transmit the second signal. Both R and P are integers greater than 1.

[0048] In this embodiment, the set of transmission resources is used for the second communication nodes associated with the R IDs to transmit the second signal, which enables multiple second communication nodes to transmit signals based on different transmission resources to achieve frequency division multiplexing and / or code division multiplexing.

[0049] In one implementation, the transmission resources include transmission sub-bands, and the set of transmission resources is used for the second communication nodes to transmit the second signal on the transmission sub-bands in the set of transmission resources. That is, the second communication node determines one transmission sub-band from the set of transmission resources and transmits the second signal on this transmission sub-band.

[0050] In another implementation, the transmission resources include spreading codes, and the set of transmission resources is used for the second communication nodes to spread the data of the second signal using the spreading codes in the set of transmission resources and transmit the spread second signal. That is, the second communication node determines one spreading code from the set of transmission resources and transmits the second signal using this spreading code.

[0051] In yet another implementation, the transmission resources include transmission sub-bands and spreading codes, and the set of transmission resources is used for the second communication nodes to spread the data of the second signal using the spreading codes in the set of transmission resources and transmit the spread second signal on the corresponding transmission sub-bands. That is, the second communication node determines one spreading code and one transmission sub-band from the set of transmission resources, spreads the data of the second signal using this spreading code, and transmits the spread second signal on this transmission sub-band.

[0052] In this embodiment, the ID is the ID of the second communication node. The ID includes the temporary ID of the second communication node, the permanent ID of the second communication node, or a part of the permanent ID of the second communication node. The R IDs correspond to R second communication nodes. In a specific example, the temporary identification code includes a random sequence with S bits, for example, S = 16.

[0053] In some embodiments, the value of the time interval between the first signal from the first communication node to the second communication node and the corresponding second signal from the second communication node to the first communication node falls within a time interval range or a set of time intervals.

[0054] In some embodiments, the time interval between the first signal from the first communication node to the second communication node and the corresponding second signal from the second communication node to the first communication node is a predefined time interval. Alternatively, the time interval between the first signal from the first communication node to the second communication node and the corresponding second signal from the second communication node to the first communication node is indicated by delay indication information.

[0055] In some embodiments, the first communication node is a Reader. The Reader can be a base station, a User Equipment (UE), or a relay node, etc. The second communication node is an Internet of Things (IoT) device in the environment. The first signal is transmitted in the Reader to device (R2D) channel, and the second signal is transmitted in the Device to Reader (D2R) channel.

[0056] In some embodiments, the first signal includes an R2D preamble and the data information carried. The second signal includes a D2R preamble and the data information carried. Among them, the R2D preamble and the D2R preamble can be used for signal timing synchronization.

[0057] The signal transmission method provided in this embodiment includes: determining a set of transmission resources, where the set of transmission resources includes P transmission resources, and the transmission resources include frequency domain resources and / or code domain resources; sending a first signal, where the first signal includes R identification codes (IDs), and the set of transmission resources is used for the second communication nodes associated with the R IDs to send second signals. In this embodiment, the set of transmission resources is used for the second communication nodes associated with the R IDs to send second signals. Since the set of transmission resources includes P transmission resources, and the transmission resources include frequency domain resources and / or code domain resources, frequency division multiplexing (FDM) and / or code division multiplexing (CDM) are achieved, which is equivalent to the second communication nodes associated with the R IDs sending second signals in parallel on the same time domain resource, thereby improving the system throughput and communication efficiency and reducing the communication delay.

[0058] Furthermore, the use of the set of transmission resources for the second communication nodes associated with the R IDs to send second signals can be implemented through the following six embodiments.

[0059] Embodiment 1.1

[0060] R is less than or equal to P. Each of the R IDs corresponds to one transmission resource in the set of transmission resources, and the transmission resources corresponding to different IDs are different. The second communication node associated with the ID sends a second signal based on the transmission resource corresponding to the ID.

[0061] Optionally, the arrangement order of the R IDs in the first signal corresponds to the indexes of the P transmission resources. The second communication nodes associated with the R IDs respectively send second signals based on the corresponding R transmission resources.

[0062] Exemplarily, the transmission resource index corresponding to the i-th ID is i - 1. 1 ≤ i ≤ R and i is an integer. That is, the transmission resource index corresponding to the first ID is 0, the transmission resource index corresponding to the second ID is 1, the transmission resource index corresponding to the third ID is 2, ……, the transmission resource index corresponding to the R-th ID is R - 1. Correspondingly, the second communication node associated with the first ID sends a second signal based on the transmission resource corresponding to the transmission resource index 0, the second communication node associated with the second ID sends a second signal based on the transmission resource corresponding to the transmission resource index 1, the second communication node associated with the third ID sends a second signal based on the transmission resource corresponding to the transmission resource index 2, ……, the second communication node associated with the R-th ID sends a second signal based on the transmission resource corresponding to the transmission resource index R - 1.

[0063] For another example, the transmission resource index corresponding to the i-th ID is P - i. That is, the transmission resource index corresponding to the first ID is P - 1, the transmission resource index corresponding to the second ID is P - 2, the transmission resource index corresponding to the third ID is P - 3, ……, the transmission resource index corresponding to the R-th ID is P - R. Correspondingly, the second communication node associated with the first ID sends a second signal based on the transmission resource corresponding to the transmission resource index P - 1, the second communication node associated with the second ID sends a second signal based on the transmission resource corresponding to the transmission resource index P - 2, the second communication node associated with the third ID sends a second signal based on the transmission resource corresponding to the transmission resource index P - 3, ……, the second communication node associated with the R-th ID sends a second signal based on the transmission resource corresponding to the transmission resource index P - R.

[0064] The above Embodiment 1.1 is illustrated below with a specific schematic diagram.

[0065] Figure 3 It is a schematic diagram of the second signal and the transmission resource in the signal sending method provided by an embodiment. As Figure 3As shown, in this schematic diagram, R is 4 and P is 4. That is, the first signal contains 4 IDs, and the transmission resource set contains 4 transmission resources. The second communication node associated with the first ID sends the second signal based on the transmission resource corresponding to transmission resource index 0, the second communication node associated with the second ID sends the second signal based on the transmission resource corresponding to transmission resource index 1, the second communication node associated with the third ID sends the second signal based on the transmission resource corresponding to transmission resource index 2, and the second communication node associated with the fourth ID sends the second signal based on the transmission resource corresponding to transmission resource index 3.

[0066] Figure 4 is another schematic diagram of the second signal and the transmission resource in the signal sending method provided by an embodiment. As Figure 4 shown, in this schematic diagram, R is 3 and P is 4. That is, the first signal contains 3 IDs, and the transmission resource set contains 4 transmission resources. The second communication node associated with the first ID sends the second signal based on the transmission resource corresponding to transmission resource index 0, the second communication node associated with the second ID sends the second signal based on the transmission resource corresponding to transmission resource index 1, and the second communication node associated with the third ID sends the second signal based on the transmission resource corresponding to transmission resource index 2.

[0067] Figure 3 and Figure 4 both use transmission resource 0 to represent the transmission resource corresponding to transmission resource index 0, use transmission resource 1 to represent the transmission resource corresponding to transmission resource index 1, use transmission resource 2 to represent the transmission resource corresponding to transmission resource index 2, and use transmission resource 3 to represent the transmission resource corresponding to transmission resource index 3. The same representation method is used in the schematic diagrams of subsequent embodiments and will not be elaborated.

[0068] Figure 3 and Figure 4 the "second signal transmission time" in refers to the transmission duration of the second signal. The transmission times of each second signal may be equal or unequal. Figure 3 and Figure 4 take the transmission times of each second signal being equal as an example for illustration.

[0069] In Figure 3 and Figure 4 the time interval between the second signal corresponding to the R IDs and the first signal is a predefined time interval. The second signal corresponding to the ID in this embodiment refers to the second signal sent by the second communication node associated with the ID based on the transmission resource corresponding to the ID. In a specific example, the predefined time interval is equal to the maximum value within the time interval range or time interval set.

[0070] Embodiment 1.2

[0071] If R is greater than P, the first signal further includes at least one of the following: transmission resource indication information and time delay indication information. The transmission resource indication information is used to indicate R - P transmission resources in the transmission resource set. The time delay indication information is used to indicate the time interval between the first signal and the second signal.

[0072] Optionally, when 1 ≤ i ≤ P, the transmission resource index corresponding to the i-th ID is i - 1; when P + 1 ≤ i ≤ R, the transmission resource corresponding to the i-th ID is one of the R - P transmission resources indicated by the transmission resource indication information. Further, when P + 1 ≤ i ≤ R, the transmission resource corresponding to the i-th ID is different from the transmission resource corresponding to the j-th ID, where P + 1 ≤ j ≤ R and i is different from j. The second communication nodes associated with the R IDs respectively send second signals based on the corresponding transmission resources.

[0073] Optionally, the transmission resource index corresponding to the i-th ID is mod(i - 1, P).

[0074] Optionally, when 1 ≤ i ≤ P, the transmission resource index corresponding to the i-th ID is i - 1; when P < i ≤ R, the transmission resource corresponding to the i-th ID is the (i - P)-th transmission resource among the R - P transmission resources indicated by the transmission resource indication information.

[0075] Exemplarily, when P + 1 ≤ i ≤ R, the transmission resource corresponding to the (P + 1)-th ID is the transmission resource with the smallest transmission resource index among the R - P transmission resources, the transmission resource corresponding to the (P + 2)-th ID is the transmission resource with the second smallest transmission resource index among the R - P transmission resources, ……, the transmission resource corresponding to the R-th ID is the transmission resource with the largest transmission resource index among the R - P transmission resources. That is, the (P + 1)-th to the R-th IDs respectively correspond to the R - P transmission resources indicated by the transmission resource indication information, and the corresponding order is in ascending order of the R - P transmission resource indices from smallest to largest.

[0076] For another example, when P + 1 ≤ i ≤ R, the transmission resource corresponding to the (P + 1)-th ID is the transmission resource with the largest transmission resource index among the R - P transmission resources, the transmission resource corresponding to the (P + 2)-th ID is the transmission resource with the second largest transmission resource index among the R - P transmission resources, ……, the transmission resource corresponding to the R-th ID is the transmission resource with the smallest transmission resource index among the R - P transmission resources. That is, the (P + 1)-th to the R-th IDs respectively correspond to the R - P transmission resources indicated by the transmission resource indication information, and the corresponding order is in descending order of the R - P transmission resource indices from largest to smallest.

[0077] Optionally, the time interval between the second signal corresponding to the first to P-th IDs and the first signal is less than the time interval between the second signal corresponding to the (P + 1)-th to R-th IDs and the first signal. That is to say, the transmission start time of the second signal corresponding to the (P + 1)-th to R-th IDs is later. This implementation avoids the collision between the second signal corresponding to the first to P-th IDs and the second signal corresponding to the (P + 1)-th to R-th IDs, and improves the communication reliability.

[0078] Further, among the second signals corresponding to the R IDs, the time interval between the second signal corresponding to the first to P-th IDs and the first signal is a predefined time interval. In a specific example, the predefined time interval is equal to the maximum value within the time interval range or time interval set. The time interval between the second signal corresponding to the (P + 1)-th to R-th IDs and the first signal is indicated by the delay indication information. That is, the delay indication information is used to indicate the time interval between the second signal corresponding to the (P + 1)-th to R-th IDs and the first signal.

[0079] It should be noted that the time intervals between the second signal corresponding to the (P + 1)-th to R-th IDs and the first signal may be all the same, partially the same, or all different. For example, assume that P is 3, R is 6, the time interval between the second signal corresponding to the 4th ID and the first signal is T4, the time interval between the second signal corresponding to the 5th ID and the first signal is T5, and the time interval between the second signal corresponding to the 6th ID and the first signal is T6. Then, T4, T5, and T6 may be all the same, partially the same, or all different. Optionally, in this implementation, the first signal may further include the mapping relationship between each transmission resource among the R - P transmission resources and the time interval.

[0080] In some embodiments, the transmission resource includes an extended code, and the time interval T1 indicated by the delay indication information minus the predefined time interval T2 is an integer multiple of the extended code length. This implementation can ensure the alignment of the extended code to improve the success rate of sending the second signal.

[0081] The above embodiments 1.2 are illustrated below with specific schematic diagrams.

[0082] Figure 5 is another schematic diagram of the second signal and the transmission resource in the signal sending method provided by an embodiment. As Figure 5As shown, in this schematic diagram, R is 6 and P is 4. That is, the first signal contains 6 IDs, and the transmission resource set contains 4 transmission resources. The transmission resource indication information indicates 2 transmission resources. Assume that the transmission resource indication information indicates the transmission resources corresponding to transmission resource index 1 and transmission resource index 2. The second communication node associated with the first ID in the first signal sends a second signal based on the transmission resource corresponding to transmission resource index 0. The second communication node associated with the second ID sends a second signal based on the transmission resource corresponding to transmission resource index 1. The second communication node associated with the third ID sends a second signal based on the transmission resource corresponding to transmission resource index 2. The second communication node associated with the fourth ID sends a second signal based on the transmission resource corresponding to transmission resource index 3. The second communication node associated with the fifth ID sends a second signal based on the transmission resource corresponding to transmission resource index 1 indicated by the transmission resource indication information. The second communication node associated with the sixth ID sends a second signal based on the transmission resource corresponding to transmission resource index 2 indicated by the transmission resource indication information. That is, the fifth to sixth IDs correspond to the R - P transmission resources indicated by the transmission resource indication information in ascending order of the transmission resource index from small to large.

[0083] Figure 5 In it, the time interval between the second signals corresponding to the first to fourth IDs and the first signal is a predefined time interval. The time interval between the second signals corresponding to the fifth and sixth IDs and the first signal is indicated by the delay indication information. Figure 5 Taking the time interval between the second signal corresponding to the fifth ID and the first signal, and the time interval between the second signal corresponding to the sixth ID and the first signal as the same as an example for illustration.

[0084] Embodiment 1.3

[0085] R is less than or equal to P. Each of the R IDs corresponds to one transmission resource in the transmission resource set, and the transmission resources corresponding to different IDs are different. The second communication node associated with the ID sends a second signal based on the transmission resource corresponding to the ID.

[0086] Optionally, the arrangement order of the R IDs in the first signal corresponds to the indexes of the P transmission resources. The second communication nodes associated with the R IDs respectively send second signals based on the corresponding R transmission resources.

[0087] Exemplarily, similar to Embodiment 1.1, the transmission resource index corresponding to the i-th ID among the R IDs is i - 1. Or, the transmission resource index corresponding to the i-th ID among the R IDs is P - i.

[0088] The difference between this embodiment and Embodiment 1.1 is that after performing step 202, that is, after sending the first signal, the following steps are further included: sending a first trigger instruction. Wherein, the first trigger instruction includes at least one of H IDs and transmission resource indication information, 1≤H≤R and H is an integer. The first trigger instruction is used to trigger the second communication nodes associated with the H IDs to send second signals. The transmission resource indication information is used to indicate H transmission resources in the transmission resource set. Further, the transmission resource indication information is used to indicate the indexes of the H transmission resources.

[0089] In one implementation, each of the H IDs corresponds to one of the H transmission resources indicated by the transmission resource indication information. Further, the transmission resources corresponding to different IDs among the H IDs are different. In another implementation, the i-th ID among the H IDs corresponds to the transmission resource index i−1 in the transmission resource set. The second communication nodes associated with the H IDs respectively send second signals based on the corresponding H transmission resources.

[0090] Exemplarily, the first ID among the H IDs corresponds to the transmission resource index 0 in the transmission resource set, the second ID among the H IDs corresponds to the transmission resource index 1 in the transmission resource set, ……, the H-th ID among the H IDs corresponds to the transmission resource index H−1 in the transmission resource set.

[0091] In a specific example, if the first trigger instruction includes transmission resource indication information, the arrangement order of the H IDs in the first trigger instruction corresponds to the indexes of the H transmission resources indicated by the transmission resource indication information. If the first trigger instruction does not include transmission resource indication information, the arrangement order of the H IDs in the first trigger instruction corresponds to the transmission resource indexes 0 to H−1 in the transmission resource set.

[0092] Optionally, the data volume of the first trigger instruction is less than the data volume of the first signal. The first signal further includes instruction information data. The second signal is a response to the first signal. The first trigger instruction is used to trigger more second communication nodes to respond to the first signal, that is, to trigger more second communication nodes to send second signals. However, there is no need to repeatedly send the instruction information data carried in the first signal in the first trigger instruction, thereby saving data overhead.

[0093] Optionally, the time interval between the second signal corresponding to the R IDs and the first signal is a predefined first time interval. In a specific example, the predefined first time interval is equal to the maximum value within the time interval range or the set of time intervals. The time interval between the second signal corresponding to the H IDs in the first trigger instruction and the first trigger instruction is a predefined second time interval. The predefined first time interval and the predefined second time interval may be equal or unequal.

[0094] In some embodiments, the transmission resource includes an extended code, and the time interval between the start time of the second signal corresponding to the R IDs and the start time of the second signal corresponding to the H IDs is an integer multiple of the extended code length. This implementation can ensure alignment of the extended codes to improve the success rate of second signal transmission.

[0095] The above embodiments 1.3 are illustrated below with specific schematic diagrams.

[0096] Figure 6 is another schematic diagram of the second signal and the transmission resource in the signal transmission method provided by an embodiment. As Figure 6 shown, in this schematic diagram, R is 4 and P is 4. That is, the first signal includes 4 IDs, and the transmission resource set includes 4 transmission resources. The second communication node associated with the first ID in the first signal sends the second signal based on the transmission resource corresponding to transmission resource index 0. The second communication node associated with the second ID sends the second signal based on the transmission resource corresponding to transmission resource index 1. The second communication node associated with the third ID sends the second signal based on the transmission resource corresponding to transmission resource index 2. The second communication node associated with the fourth ID sends the second signal based on the transmission resource corresponding to transmission resource index 3. In this schematic diagram, H is 2, that is, the first trigger instruction includes 2 IDs and transmission resource indication information. The transmission resource indication information indicates the transmission resources corresponding to transmission resource index 1 and transmission resource index 2. The second communication node associated with the first ID in the first trigger instruction sends the second signal based on the transmission resource corresponding to transmission resource index 1 indicated by the transmission resource indication information. The second communication node associated with the second ID in the first trigger instruction sends the second signal based on the transmission resource corresponding to transmission resource index 2 indicated by the transmission resource indication information.

[0097] Figure 6 In, the time interval between the second signal corresponding to the R IDs and the first signal is a predefined first time interval. The time interval between the second signal corresponding to the H IDs in the first trigger instruction and the first trigger instruction is a predefined second time interval.

[0098] Embodiment 1.4

[0099] If R is greater than P, after performing step 202, that is, after sending the first signal, the following steps are further included: sending a second trigger instruction. Wherein, the first signal triggers the second communication nodes associated with the first to Pth IDs among the R IDs to send a second signal. The second trigger instruction triggers the second communication nodes associated with the (k×P + 1)th to min((k + 1)P, R)th IDs among the R IDs to send a second signal. Wherein, k represents the kth time of sending the second trigger instruction after the first signal, and k is greater than or equal to 1.

[0100] In one implementation, the transmission resource index corresponding to the ith ID among the R IDs is mod(i - 1, P). 1 ≤ i ≤ R and i is an integer. Wherein, mod(i - 1, P) represents the remainder of (i - 1) divided by P. For example, assume R is 8 and P is 4. Then, the transmission resource index corresponding to the first ID is 0, the transmission resource index corresponding to the second ID is 1, the transmission resource index corresponding to the third ID is 2, the transmission resource index corresponding to the fourth ID is 3, the transmission resource index corresponding to the fifth ID is 0, the transmission resource index corresponding to the sixth ID is 1, the transmission resource index corresponding to the seventh ID is 2, and the transmission resource index corresponding to the eighth ID is 3.

[0101] In another implementation, when 1 ≤ i ≤ P, the transmission resource index corresponding to the ith ID among the R IDs is i - 1, and when P < i ≤ R, the transmission resource corresponding to the ith ID among the R IDs is indicated by transmission resource indication information.

[0102] The transmission resource indication information in this implementation is included in the first signal and / or included in the second trigger instruction. In a specific example, the transmission resource indication information is sent in the first signal or in the second trigger instruction.

[0103] Wherein, the data volume of the second trigger instruction is smaller than that of the first signal. The first signal further includes instruction information data. The second signal is a response to the first signal. The second trigger instruction is used to trigger more second communication nodes to respond to the first signal, that is, to trigger more second communication nodes to send the second signal. However, there is no need to repeatedly send the instruction information data carried in the first signal in the second trigger instruction, thereby saving data overhead.

[0104] Optionally, the time interval between the second signal corresponding to the first to the P-th ID and the first signal is a predefined first time interval. In a specific example, the predefined first time interval is equal to the maximum value within the time interval range or the set of time intervals. The time interval between the second signal corresponding to the (k×P + 1)-th to the min((k + 1)P, R)-th ID and the second trigger instruction of the k-th transmission is a predefined second time interval. The predefined first time interval and the predefined second time interval may be equal or unequal.

[0105] In some embodiments, the transmission resource includes an extended code, and the time interval between the start time of the second signal corresponding to the first to the P-th ID and the start time of the second signal corresponding to the (k×P + 1)-th to the min((k + 1)P, R)-th ID is an integer multiple of the extended code length to achieve alignment of the extended codes.

[0106] The above embodiments 1.4 are illustrated below with specific schematic diagrams.

[0107] Figure 7 is another schematic diagram of the second signal and the transmission resource in the signal sending method provided by an embodiment. As Figure 7 shown, in this schematic diagram, R is 6 and P is 4. In this embodiment, the first signal includes 4 IDs, and the transmission resource set includes 4 transmission resources. The second communication node associated with the first ID in the first signal sends the second signal based on the transmission resource corresponding to the transmission resource index 0. The second communication node associated with the second ID sends the second signal based on the transmission resource corresponding to the transmission resource index 1. The second communication node associated with the third ID sends the second signal based on the transmission resource corresponding to the transmission resource index 2. The second communication node associated with the fourth ID sends the second signal based on the transmission resource corresponding to the transmission resource index 3. After the second trigger instruction, the second communication node associated with the fifth ID in the first signal sends the second signal based on the transmission resource corresponding to the transmission resource index 1 indicated by the transmission resource indication information. The second communication node associated with the sixth ID in the first signal sends the second signal based on the transmission resource corresponding to the transmission resource index 2 indicated by the transmission resource indication information. Among them, the transmission resource indication information is sent in the first signal or in the second trigger instruction. The transmission resource indication information indicates the transmission resources corresponding to the transmission resource index 1 and the transmission resource index 2.

[0108] Figure 7 In, the time interval between the second signal corresponding to the first to the fourth ID and the first signal is a predefined first time interval. The time interval between the second signal corresponding to the fifth to the sixth ID and the second trigger instruction of the first transmission is a predefined second time interval.

[0109] Embodiment 1.5

[0110] In this embodiment, the first signal further includes R transmission resource indexes. One of the R IDs and one of the transmission resource indexes of the R transmission resources form a resource configuration group. The second communication node associated with the j-th ID uses the transmission resource corresponding to the transmission resource index in the resource configuration group where the j-th ID is located to send the second signal, where 1 ≤ j ≤ R and j is an integer. That is, in this embodiment, the first signal includes R resource configuration groups, and each resource configuration group includes an ID and a transmission resource index. For a resource configuration group, the second communication node associated with the ID uses the transmission resource corresponding to the transmission resource index to send the second signal.

[0111] In some embodiments, in the first signal, the arrangement order of the R resource configuration groups is successively the first resource configuration group to the R-th resource configuration group.

[0112] Figure 8 It is a schematic diagram of a resource configuration group in the signal sending method provided by an embodiment. As Figure 8 shown, the arrangement order of the R resource configuration groups is successively: the first resource configuration group, the second resource configuration group,..., the R-th resource configuration group. Each resource configuration group includes an ID and a transmission resource index.

[0113] In a specific example, the first signal includes R resource configuration groups, and each resource configuration group includes an ID, a transmission resource index, and a delay indication information. Among them, in a resource configuration group, the transmission resource corresponding to the transmission resource index is used by the second communication node associated with the ID to send the second signal, and the delay indication information is used to indicate the time interval between the second signal and the first signal.

[0114] Embodiment 1.6

[0115] In this embodiment, the first signal further includes at least one of transmission resource indication information and delay indication information. The transmission resource indication information is used to indicate the transmission resources used by the second signals corresponding to the R IDs. The delay indication information is used to indicate the time intervals between the second signals corresponding to the R IDs and the first signal. The time intervals between the second signals corresponding to the R IDs and the first signal may be all the same, partially the same, or all different.

[0116] The following describes the implementation manner of the transmission resource indication information provided in this embodiment.

[0117] In the above embodiments 1.2, 1.3, 1.4, and 1.6, the transmission resource indication information involved may be a bit - map sequence of length P. The P bits of the bitmap sequence correspond one - to - one with the P transmission resources in the transmission resource set. The bitmap sequence is used to indicate Z transmission resources, where Z is less than or equal to P and greater than or equal to F, and F is the number of IDs included in the first signal, the first trigger instruction, or the second trigger instruction.

[0118] Optionally, the P bits of the bitmap sequence correspond one - to - one with the P transmission resources in the transmission resource set. The bit value corresponding to the index of the indicated transmission resource is 1, and the bit value corresponding to the index of the un - indicated transmission resource is 0. For example, for a bitmap sequence of length 8, if the first signal indicates 4 transmission resource indices, which are 0, 2, 5, and 6 respectively, then the bitmap sequence sent in the first signal is 01100101.

[0119] In some embodiments, the number of transmission resources Z indicated by the bitmap sequence is equal to the number of IDs F. The F IDs correspond in sequence to the F transmission resources indicated by the bitmap sequence. For example, in the first signal (or the first trigger instruction, or the second trigger instruction), the first ID to the F - th ID respectively correspond to the F transmission resources with bit values of 1 from the low - order bit to the high - order bit in the bitmap sequence, or respectively correspond to the F transmission resources with bit values of 1 from the high - order bit to the low - order bit in the bitmap sequence.

[0120] In some embodiments, the transmission resource is a transmission sub - band. The number of transmission sub - bands Z indicated by the bitmap sequence is greater than the number of IDs F. In this case, among the transmission frequency bands used by the second signals of the second communication nodes associated with the F IDs, at least one transmission frequency band contains W transmission sub - bands, where W is greater than or equal to 2. Therefore, the transmission of the second signals of the second communication nodes associated with the F IDs occupies Z transmission sub - bands, where Z is greater than F. Among them, the number of transmission sub - bands included in the transmission frequency band of a second signal can be determined according to the bandwidth of the second signal. For example, when the signal bandwidth is A, one transmission sub - band is used, and when the signal bandwidth is 2*A, two transmission sub - bands are used.

[0121] The transmission sub-bands corresponding to the F transmission frequency bands (each ID corresponds to one transmission frequency band, and there are F transmission frequency bands in total) are sequentially the Z transmission sub-bands indicated by the bitmap sequence. For example, the transmission sub-bands corresponding to the first to the F-th transmission frequency bands are sequentially the Z sub-bands with bit values of 1 from the lower bit to the higher bit indicated by the bitmap sequence, or sequentially the Z sub-bands with bit values of 1 from the higher bit to the lower bit indicated by the bitmap. Further, the transmission resource indication information may further include the correspondence between the transmission sub-bands and the transmission frequency bands. For example, transmission sub-band 4 and transmission sub-band 5 correspond to transmission frequency band 4.

[0122] In some embodiments, in the first signal, the arrangement order of the R IDs and the bitmap sequence is: the first ID to the R-th ID, the bitmap sequence.

[0123] In some embodiments, the time interval between the second signal and the first signal refers to: the interval between the rising edge of the last data of the first signal and the first rising edge of the second signal; or the interval between the falling edge of the last data of the first signal and the first falling edge of the second signal.

[0124] In some embodiments, the time interval between the second signal and the first trigger instruction or the second trigger instruction refers to: the interval between the rising edge of the last data of the first trigger instruction or the second trigger instruction and the first rising edge of the second signal; or the interval between the falling edge of the last data of the first trigger instruction or the second trigger instruction and the first falling edge of the second signal.

[0125] In some embodiments, the transmission resource index is the serial number of a transmission resource in the transmission resource set, and the value range of the transmission resource index is from 0 to P - 1.

[0126] Figure 9 It is a schematic flowchart of another signal sending method provided by an embodiment. The signal sending method provided by this embodiment can be applied to a second communication entity. For example, Figure 1 the second communication entity in Figure 9 As shown, the signal sending method provided by this embodiment includes the following steps.

[0127] Step 901: Determine the transmission resource set.

[0128] Wherein, the transmission resource set includes P transmission resources, and the transmission resources include frequency domain resources and / or code domain resources.

[0129] The frequency domain resources in this embodiment may be transmission sub-bands, and the code domain resources may be spreading codes. That is, the transmission resources in this embodiment include at least one of transmission sub-bands and spreading codes.

[0130] In some embodiments, the transmission resource is a transmission sub - band. The set of transmission resources is a set of transmission sub - bands, which includes P transmission sub - bands. Among them, a transmission sub - band is a frequency - domain resource available for signal transmission. A transmission sub - band can be a frequency - domain resource composed of frequency - domain units such as a BWP, a physical resource block, a sub - carrier, a sub - channel, etc.

[0131] In some embodiments, the bandwidth of the transmission sub - band includes a second signal bandwidth and a frequency - domain guard interval. The frequency - domain guard interval in this embodiment is a section of frequency - domain width reserved to avoid interference between adjacent frequency - domain signals. The frequency - domain guard interval can be determined according to at least one of the frequency shift value of the second signal, the second signal bandwidth, and the type of the second communication node.

[0132] Among them, the frequency shift value of the second signal is the shift value of the center frequency of the second signal relative to the center frequency of the CW. For example, if the center frequency of the CW is f0, and the center frequency of the second signal is shifted by a frequency value f1 relative to f0, that is, the center frequency of the second signal is f0 + f1 or f0 - f1, the frequency shift value of the second signal is f1. The carrier CW can be used for the second communication node to send a backscatter signal. The type of the second communication node is at least divided into two types. Exemplarily, the type of the second communication node includes a backscatter terminal type and a non - backscatter terminal type.

[0133] In some embodiments, the frequency - domain guard interval is determined according to the frequency shift value of the second signal. Under the condition that other influencing factors are fixed, the larger the frequency shift value of the second signal, the larger the frequency - domain guard interval. This is because, under the condition that other influencing factors are fixed, the larger the frequency shift value of the second signal, the larger the second signal bandwidth, and the wider the harmonics of the signal. To avoid harmonic interference with other adjacent - frequency - band signals, a larger frequency - domain guard interval is reserved.

[0134] In some embodiments, the frequency - domain guard interval is determined according to the second signal bandwidth. Among them, the larger the signal bandwidth, the larger the frequency - domain guard interval.

[0135] In some embodiments, the frequency - domain guard interval is determined according to the type of the second communication node. Among them, the frequency - domain guard interval corresponding to the backscatter terminal type is greater than that of the non - backscatter terminal type.

[0136] In some embodiments, the number of transmission sub - bands P, the total frequency - band bandwidth F, and the transmission sub - band bandwidth B included in the set of transmission resources satisfy Among them, represents rounding down the result of to the nearest integer.

[0137] In some embodiments, the transmission sub - band bandwidth is equal to the sum of the second signal bandwidth and the frequency - domain guard interval. In a specific example, the second signal bandwidth corresponds to the transmission sub - band bandwidth. In another specific example, the number of transmission sub - bands included in the transmission resource set is determined according to the second signal bandwidth and the total frequency - band bandwidth.

[0138] In some embodiments, the transmission resource is an extended code. The transmission resource set is an extended - code set, which includes P extended codes.

[0139] In some embodiments, the transmission resource includes a transmission sub - band and an extended code. A transmission resource is composed of a transmission sub - band and an extended code, that is, one transmission - resource index corresponds to one transmission - sub - band index and one extended - code index. The transmission resource set includes P transmission resources, where P = K×L, K is the number of transmission sub - bands, and L is the number of extended codes.

[0140] Step 902: Receive the first signal.

[0141] Among them, the first signal includes R identification codes ID, and both R and P are integers greater than 1.

[0142] In this embodiment, the second communication node receives the first signal sent by the first communication node. In this embodiment, the ID is the ID of the second communication node. The ID includes the temporary ID of the second communication node, the permanent ID of the second communication node, or a part of the permanent ID of the second communication node. The R IDs correspond to R second communication nodes.

[0143] Step 903: Determine a transmission resource within the transmission resource set and send a second signal based on the transmission resource.

[0144] In this embodiment, a transmission resource within the transmission resource set can be determined according to the arrangement order of the ID of the second communication node among the R IDs. The second communication node sends the second signal based on the determined transmission resource. In a specific example, the ID of the second communication node is the y - th ID among the R IDs, where 1 ≤ y ≤ R and y is an integer. The determining a transmission resource within the transmission resource set includes: determining the transmission resource with a transmission - resource index of y - 1 within the transmission resource set as the transmission resource for the second communication node to send the second signal; or determining the transmission resource with a transmission - resource index of P - y within the transmission resource set as the transmission resource for the second communication node to send the second signal.

[0145] In one implementation, the transmission resources include transmission sub - bands, and the transmission resource set is used for the second communication node to send a second signal on the transmission sub - bands in the transmission resource set. That is, the second communication node determines a transmission sub - band from the transmission resource set and sends the second signal on this transmission sub - band.

[0146] In another implementation, the transmission resources include spreading codes, and the transmission resource set is used for the second communication node to spread the data of the second signal using the spreading codes in the transmission resource set and send the spread second signal. That is, the second communication node determines a spreading code from the transmission resource set and uses this spreading code to send the second signal.

[0147] In yet another implementation, the transmission resources include transmission sub - bands and spreading codes, and the transmission resource set is used for the second communication node to spread the data of the second signal using the spreading codes in the transmission resource set and send the spread second signal on the corresponding transmission sub - bands. That is, the second communication node determines a spreading code and a transmission sub - band from the transmission resource set, uses this spreading code to spread the data of the second signal, and sends the spread second signal on this transmission sub - band.

[0148] In some embodiments, the value of the time interval between the second signal and the first signal is within a time interval range or a set of time intervals.

[0149] In some embodiments, the time interval between the second signal and the first signal is a predefined time interval. Alternatively, the time interval between the second signal and the first signal is indicated by delay indication information.

[0150] The signal sending method provided in this embodiment includes: determining a transmission resource set, where the transmission resource set includes P transmission resources, and the transmission resources include frequency - domain resources and / or code - domain resources; receiving a first signal, where the first signal includes R identification codes (IDs), and both R and P are integers greater than 1; determining a transmission resource within the transmission resource set, and sending a second signal based on the transmission resource. The transmission resource set in this embodiment is used for the second communication nodes associated with R IDs to send second signals. Since the transmission resource set includes P transmission resources, and the transmission resources include frequency - domain resources and / or code - domain resources, FDM and / or CDM is implemented. It is equivalent to the second communication nodes associated with R IDs sending second signals in parallel on the same time - domain resource, thereby improving the system throughput and communication efficiency and reducing the communication delay.

[0151] Further, determining a transmission resource within the transmission resource set in step 903 can be implemented through the following six embodiments.

[0152] Embodiment 2.1

[0153] This embodiment corresponds to Embodiment 1.1. In this embodiment, R is less than or equal to P. The ID of the second communication node is the y-th ID among the R IDs, where 1 ≤ y ≤ R and y is an integer. Determining a transmission resource within the transmission resource set includes: determining the transmission resource with a transmission resource index of y - 1 within the transmission resource set as the transmission resource for the second communication node to send the second signal; or determining the transmission resource with a transmission resource index of P - y within the transmission resource set as the transmission resource for the second communication node to send the second signal.

[0154] In this embodiment, the time interval between the second signal and the first signal can be a predefined time interval. In a specific example, the predefined time interval is equal to the maximum value within the time interval range or time interval set.

[0155] Embodiment 2.2

[0156] This embodiment corresponds to Embodiment 1.2. In this embodiment, if R is greater than P, the ID of the second communication node is the y-th ID among the R IDs, where 1 ≤ y ≤ R and y is an integer. The first signal further includes at least one of the following: transmission resource indication information and delay indication information. The transmission resource indication information is used to indicate R - P transmission resources in the transmission resource set. The delay indication information is used to indicate the time interval between the first signal and the second signal.

[0157] Optionally, in this embodiment, determining a transmission resource within the transmission resource set includes: if 1 ≤ y ≤ P, determining the transmission resource corresponding to the transmission resource index y - 1 within the transmission resource set as the transmission resource for the second communication node to send the second signal; if P + 1 ≤ y ≤ R, determining one transmission resource among the R - P transmission resources indicated by the transmission resource indication information as the transmission resource for the second communication node to send the second signal.

[0158] Exemplarily, the (P + 1)-th to the R-th IDs respectively correspond to the R - P transmission resources indicated by the transmission resource indication information, and the corresponding order is in ascending order of the R - P transmission resource indices from small to large. If P + 1 ≤ y ≤ R, then according to the arrangement order of y in the R-th ID, the corresponding transmission resource index is determined from the R - P transmission resource indices. For example, assume that P is 4 and R is 6, and assume that the ID of the second communication node is the fifth ID among the six IDs. Then the second communication node corresponds to the transmission resource with the smallest transmission resource index among the 2 transmission resources indicated by the transmission resource indication information. Another example, assume that P is 4 and R is 6, and assume that the ID of the second communication node is the sixth ID among the six IDs. Then the second communication node corresponds to the transmission resource with the largest transmission resource index among the 2 transmission resources indicated by the transmission resource indication information.

[0159] Optionally, in this embodiment, determining a transmission resource within the transmission resource set includes: determining the transmission resource with the transmission resource index of mod(y - 1, P) within the transmission resource set as the transmission resource for the second communication node to send the second signal; or, when 1 ≤ y ≤ P, determining the transmission resource with the transmission resource index of y - 1 within the transmission resource set as the transmission resource for the second communication node to send the second signal, and when P < y ≤ R, determining the (y - P)-th transmission resource among the R - P transmission resources indicated by the transmission resource indication information as the transmission resource for the second communication node to send the second signal.

[0160] In one implementation, the time interval between the second signal and the first signal is a predefined time interval. In a specific example, the predefined time interval is equal to the maximum value within the time interval range or the time interval set.

[0161] In another implementation, when 1 ≤ y ≤ P, the time interval between the second signal and the first signal is a predefined time interval; when P + 1 ≤ y ≤ R, the time interval between the second signal and the first signal is indicated by the delay indication information. That is, the delay indication information is used to indicate the time intervals between the second signals corresponding to the (P + 1)-th to the R-th IDs and the first signal.

[0162] Embodiment 2.3

[0163] This embodiment corresponds to Embodiment 1.3. In this embodiment, R is less than or equal to P. In this embodiment, determining a transmission resource within the transmission resource set includes: if the ID of the second communication node is the y-th ID among the R IDs, determining the transmission resource used by the second communication node to send the second signal according to y, where 1 ≤ y ≤ R and y is an integer; if the R IDs do not include the ID of the second communication node, after receiving the first signal, receiving a first trigger instruction, the first trigger instruction includes at least one of H IDs and transmission resource indication information, if the ID of the second communication node is the y-th ID among the H IDs, determining the transmission resource corresponding to the y-th transmission resource index indicated by the transmission resource indication information as the transmission resource used by the second communication node to send the second signal, or determining the transmission resource corresponding to the transmission resource index y - 1 in the transmission resource set as the transmission resource used by the second communication node to send the second signal. Where 1 ≤ y ≤ H and y is an integer, 1 ≤ H ≤ R and H is an integer.

[0164] In a specific example, if the ID of the second communication node is the y-th ID among the R IDs, when determining the transmission resource used by the second communication node to send the second signal according to y, the transmission resource corresponding to the transmission resource index y - 1 in the transmission resource set can be determined as the transmission resource used by the second communication node to send the second signal.

[0165] Correspondingly, if the R IDs include the ID of the second communication node, in step 903, after receiving the first signal, the second communication node determines the transmission resource for sending the second signal and sends the second signal based on the transmission resource. If the R IDs do not include the ID of the second communication node, in step 903, after receiving the first trigger instruction containing its own ID, the second communication node determines the transmission resource for sending the second signal and sends the second signal based on the transmission resource.

[0166] In some embodiments, if the R IDs include the ID of the second communication node, the time interval between the second signal and the first signal is a predefined first time interval. If the R IDs do not include the ID of the second communication node, the time interval between the second signal and the first trigger instruction is a predefined second time interval. The predefined first time interval and the predefined second time interval can be equal or unequal.

[0167] Embodiment 2.4

[0168] This embodiment corresponds to Embodiment 1.4. In this embodiment, the ID of the second communication node is the y-th ID among the R IDs, where 1 ≤ y ≤ R and y is an integer. If R is greater than P, determining a transmission resource within the transmission resource set includes: determining the transmission resource with a transmission resource index of mod(y - 1, P) in the transmission resource set as the transmission resource for the second communication node to send the second signal; or, when 1 ≤ y ≤ P, determining the transmission resource with a transmission resource index of y - 1 in the transmission resource set as the transmission resource for the second communication node to send the second signal, and when P < y ≤ R, determining the transmission resource for the second communication node to send the second signal according to the transmission resource indication information.

[0169] In this embodiment, sending the second signal based on the transmission resource includes: if y is less than or equal to p, sending the second signal based on this transmission resource after the first signal; if y is greater than p, sending the second signal based on the transmission resource after receiving the second trigger instruction for the

[0170] The transmission resource indication information in this embodiment is included in the first signal and / or included in the second trigger instruction.

[0171] In this embodiment, when 1 ≤ y ≤ P, the time interval between the second signal and the first signal is a predefined first time interval. In a specific example, the predefined first time interval is equal to the maximum value within the time interval range or time interval set. When P < y ≤ R, the time interval between the second signal and the second trigger instruction for the first transmission is a predefined second time interval. The predefined first time interval and the predefined second time interval may be equal or unequal.

[0172] Embodiment 2.5

[0173] This embodiment corresponds to Embodiment 1.5. In this embodiment, determining a transmission resource within the transmission resource set includes: determining the transmission resource corresponding to the transmission resource index in the resource configuration group where the ID of the second communication node is located as the transmission resource for the second communication node to send the second signal. In this embodiment, the first signal further includes R transmission resource indices, and one ID among the R IDs and one transmission resource index among the transmission resource indices of the R transmission resources form a resource configuration group, and the first signal includes R resource configuration groups.

[0174] Exemplarily, for example, the ID of the second communication node is the y-th ID among the R IDs, where 1 ≤ y ≤ R, and the second communication node determines to use the transmission resources in the y-th resource configuration group to send the second signal.

[0175] In this embodiment, the time interval between the second signal and the first signal is a predefined time interval. Alternatively, the time interval between the second signal and the first signal is indicated by delay indication information.

[0176] In a specific example, the first signal includes R resource configuration groups, and each resource configuration group includes an ID, a transmission resource index, and a delay indication information. Among them, in a resource configuration group, the transmission resource index is used for the second signal sent by the second communication node associated with the ID. The delay indication information is used to indicate the time interval between the second signal and the first signal.

[0177] Embodiment 2.6

[0178] This embodiment corresponds to Embodiment 1.6. In this embodiment, the first signal further includes at least one of transmission resource indication information and delay indication information. Among them, the transmission resource indication information is used to indicate the transmission resources used by the second signals corresponding to the R IDs. The delay indication information is used to indicate the time interval between the second signals corresponding to the R IDs and the first signal. In this embodiment, determining a transmission resource within the set of transmission resources includes: determining the transmission resource used by the second communication node to send the second signal according to the transmission resource indication information. Sending the second signal based on the transmission resource includes: sending the second signal based on the determined transmission resource after the time interval indicated by the delay indication information; or sending the second signal based on the determined transmission resource after a predefined time interval.

[0179] The implementation manner of the resource indication information in this embodiment is similar to that of the resource indication information in Embodiments 1.2, 1.3, 1.4, and 1.6 above, and will not be elaborated here.

[0180] In some embodiments, the time interval between the second signal and the first signal refers to: the interval between the rising edge of the last data of the first signal and the first rising edge of the second signal; or the interval between the falling edge of the last data of the first signal and the first falling edge of the second signal.

[0181] In some embodiments, the time interval between the second signal and the first trigger instruction or the second trigger instruction refers to: the interval between the rising edge of the last data of the first trigger instruction or the second trigger instruction and the first rising edge of the second signal; or, the interval between the falling edge of the last data of the first trigger instruction or the second trigger instruction and the first falling edge of the second signal.

[0182] Figure 10 is a schematic structural diagram of a signal sending device provided by an embodiment. The signal sending device provided by this embodiment is disposed in the first communication node. As Figure 10 shown, the signal sending device includes the following modules: a first determination module 101 and a first sending module 102.

[0183] The first determination module 101 is configured to determine a transmission resource set.

[0184] Wherein, the transmission resource set includes P transmission resources, and the transmission resources include frequency domain resources and / or code domain resources.

[0185] The first sending module 102 is configured to send a first signal.

[0186] Wherein, the first signal includes R identification codes (IDs), and the transmission resource set is used for second communication nodes associated with the R IDs to send a second signal, and both R and P are integers greater than 1.

[0187] In some embodiments, the transmission resources include transmission sub-bands, and the transmission resource set is used for the second communication node to send the second signal on the transmission sub-bands in the transmission resource set. Or, the transmission resources include spreading codes, and the transmission resource set is used for the second communication node to spread the data of the second signal using the spreading codes in the transmission resource set and send the spread second signal. Or, the transmission resources include transmission sub-bands and spreading codes, and the transmission resource set is used for the second communication node to spread the data of the second signal using the spreading codes in the transmission resource set and send the spread second signal on the corresponding transmission sub-bands.

[0188] In some embodiments, the transmission resources include transmission sub-bands, and the bandwidth of the transmission sub-bands includes the bandwidth of the second signal and a frequency domain guard interval. The frequency domain guard interval is determined according to at least one of the frequency shift value of the second signal, the bandwidth of the second signal, and the type of the second communication node.

[0189] In some embodiments, the transmission resources include transmission sub-bands. The first determination module 101 is further configured to determine the number of the transmission sub-bands according to the total frequency band bandwidth and the bandwidth of the transmission sub-bands; or, is further configured to determine the number of the transmission sub-bands according to the total frequency band bandwidth and the bandwidth of the second signal.

[0190] In some embodiments, R is less than or equal to P. Each of the R IDs corresponds to one transmission resource in the transmission resource set, and the transmission resources corresponding to different IDs are different. The second communication node associated with the ID sends a second signal based on the transmission resource corresponding to the ID.

[0191] In some embodiments, the transmission resource index corresponding to the i-th ID is i - 1, or the transmission resource index corresponding to the i-th ID is P - i, where 1 ≤ i ≤ R and i is an integer.

[0192] In some embodiments, if R is greater than P, the first signal further includes at least one of the following: transmission resource indication information and delay indication information. The transmission resource indication information is used to indicate R - P transmission resources in the transmission resource set. The delay indication information is used to indicate the time interval between the first signal and the second signal.

[0193] In some embodiments, when 1 ≤ i ≤ P, the transmission resource index corresponding to the i-th ID is i - 1; when P + 1 ≤ i ≤ R, the transmission resource corresponding to the i-th ID is one of the R - P transmission resources.

[0194] In some embodiments, the time interval between the second signals corresponding to the first to P-th IDs and the first signal is less than the time interval between the second signals corresponding to the (P + 1)-th to R-th IDs and the first signal.

[0195] In some embodiments, the delay indication information is used to indicate the time interval between the second signals corresponding to the (P + 1)-th to R-th IDs and the first signal. The time interval between the second signals corresponding to the first to P-th IDs and the first signal is a predefined time interval.

[0196] In some embodiments, the transmission resource includes an extended code. The time interval indicated by the delay indication information minus the predefined time interval is an integer multiple of the extended code length.

[0197] In some embodiments, the first sending module 102 is further configured to send a first trigger instruction. The first trigger instruction includes at least one of H IDs and transmission resource indication information, where 1 ≤ H ≤ R and H is an integer. The first trigger instruction is used to trigger the second communication nodes associated with the H IDs to send second signals. The transmission resource indication information is used to indicate H transmission resources in the transmission resource set.

[0198] In some embodiments, each of the H IDs corresponds to one of the H transmission resources indicated by the transmission resource indication information; or, the i-th ID among the H IDs corresponds to the transmission resource index i−1 in the transmission resource set.

[0199] In some embodiments, the time interval between the second signal corresponding to the R IDs and the first signal is a predefined first time interval; the time interval between the second signal corresponding to the H IDs and the first trigger instruction is a predefined second time interval.

[0200] In some embodiments, the data volume of the first trigger instruction is less than the data volume of the first signal.

[0201] In some embodiments, the first sending module 102 is further configured to send a second trigger instruction. The first signal is used to trigger the second communication nodes associated with the first to the P-th IDs among the R IDs to send a second signal. The second trigger instruction is used to trigger the second communication nodes associated with the (k×P + 1)-th to the min((k + 1)P, R)-th IDs among the R IDs to send a second signal, where k represents the k-th time of sending the second trigger instruction after the first signal, and k is greater than or equal to 1.

[0202] In some embodiments, the transmission resource index corresponding to the i-th ID among the R IDs is mod(i−1, P), 1≤i≤R and i is an integer; or, when 1≤i≤P, the transmission resource index corresponding to the i-th ID among the R IDs is i−1, and when P < i≤R, the transmission resource corresponding to the i-th ID among the R IDs is indicated by the transmission resource indication information, and the transmission resource indication information is included in the first signal and / or included in the second trigger instruction.

[0203] In some embodiments, the time interval between the second signal corresponding to the first to the P-th IDs and the first signal is a predefined first time interval; the time interval between the second signal corresponding to the (k×P + 1)-th to the min((k + 1)P, R)-th IDs and the k-th transmitted second trigger instruction is a predefined second time interval.

[0204] In some embodiments, the first signal further includes R transmission resource indexes. One of the R IDs and one of the transmission resource indexes of the R transmission resources form a resource configuration group; the second communication node associated with the j-th ID uses the transmission resource corresponding to the transmission resource index in the resource configuration group where the j-th ID is located to send the second signal, 1≤j≤R and j is an integer.

[0205] In some embodiments, the transmission resource indication information is a bitmap sequence of length P. The P bits of the bitmap sequence correspond one-to-one to the P transmission resources in the transmission resource set, and the bitmap sequence is used to indicate Z transmission resources, where Z is less than or equal to P and Z is greater than or equal to F, and F is the number of IDs included in the first signal, the first trigger instruction, or the second trigger instruction.

[0206] The signal sending device provided in this embodiment can implement the signal sending method executed by the first communication node in the above embodiment. The implementation principle and technical effects are similar to those in the above embodiment and will not be elaborated here.

[0207] Figure 11 It is a schematic structural diagram of another signal sending device provided in an embodiment. The signal sending device provided in this embodiment is arranged in the second communication node. As Figure 11 shown, the signal sending device provided in this embodiment includes the following modules: a second determination module 111, a first reception module 112, a third determination module 113, and a second transmission module 114.

[0208] The second determination module 111 is configured to determine a transmission resource set.

[0209] Wherein, the transmission resource set includes P transmission resources, and the transmission resources include frequency domain resources and / or code domain resources;

[0210] The first reception module 112 is configured to receive a first signal.

[0211] Wherein, the first signal includes R identification codes ID, and both R and P are integers greater than 1.

[0212] The third determination module 113 is configured to determine a transmission resource within the transmission resource set.

[0213] The second transmission module 114 is configured to transmit a second signal based on the transmission resource.

[0214] In some embodiments, the ID of the second communication node is the y-th ID among the R IDs, where 1 ≤ y ≤ R and y is an integer. The third determination module 113 is configured to: determine the transmission resource with a transmission resource index of y - 1 within the transmission resource set as the transmission resource for the second communication node to transmit the second signal; or determine the transmission resource with a transmission resource index of P - y within the transmission resource set as the transmission resource for the second communication node to transmit the second signal.

[0215] In some embodiments, if R is greater than P, the ID of the second communication node is the y-th ID among the R IDs, where 1 ≤ y ≤ R and y is an integer. The first signal further includes at least one of the following: transmission resource indication information and time delay indication information; the transmission resource indication information is used to indicate R - P transmission resources in the transmission resource set; the time delay indication information is used to indicate the time interval between the first signal and the second signal. The third determination module 113 is configured as follows: if 1 ≤ y ≤ P, determine the transmission resource corresponding to the transmission resource index y - 1 in the transmission resource set as the transmission resource for the second communication node to send the second signal; if P + 1 ≤ y ≤ R, determine one of the R - P transmission resources indicated by the transmission resource indication information as the transmission resource for the second communication node to send the second signal.

[0216] In some embodiments, the third determination module 113 is configured as follows: if the ID of the second communication node is the y-th ID among the R IDs, determine the transmission resource for the second communication node to send the second signal according to y, where 1 ≤ y ≤ R and y is an integer; if the R IDs do not include the ID of the second communication node, after receiving the first signal, receive the first trigger instruction, the first trigger instruction includes at least one of H IDs and transmission resource indication information, if the ID of the second communication node is the y-th ID among the H IDs, determine the transmission resource corresponding to the y-th transmission resource index indicated by the transmission resource indication information as the transmission resource for the second communication node to send the second signal, or determine the transmission resource corresponding to the transmission resource index y - 1 in the transmission resource set as the transmission resource for the second communication node to send the second signal; where 1 ≤ y ≤ H and y is an integer, 1 ≤ H ≤ R and H is an integer.

[0217] In some embodiments, the ID of the second communication node is the y-th ID among the R IDs, where 1 ≤ y ≤ R and y is an integer. If R is greater than P, the third determination module 113 is configured as follows: determine the transmission resource with the transmission resource index of mod(y - 1, P) in the transmission resource set as the transmission resource for the second communication node to send the second signal; or when 1 ≤ y ≤ P, determine the transmission resource with the transmission resource index of y - 1 in the transmission resource set as the transmission resource for the second communication node to send the second signal, and when P < y ≤ R, determine the transmission resource for the second communication node to send the second signal according to the transmission resource indication information.

[0218] In this embodiment, the second transmission module 114 is configured as follows: after receiving the second trigger instruction for a certain number of times, send the second signal based on the transmission resource.

[0219] In some embodiments, the third determination module 113 is configured to: determine the transmission resource corresponding to the transmission resource index in the resource configuration group where the ID of the second communication node is located as the transmission resource for the second communication node to send the second signal.

[0220] The signal sending device provided in this embodiment can implement the signal sending method executed by the second communication node in the above embodiment. The implementation principle and technical effects are similar to those in the above embodiment, and will not be elaborated here.

[0221] An embodiment of the present application also provides a communication node, including: a processor, which is configured to implement the method provided in any embodiment of the present application when executing a computer program. Specifically, the communication node may be a first communication node or a second communication node. The first communication node includes: a processor, which is configured to implement the signal sending method provided in any embodiment of the present application when executing a computer program; the second communication node includes: a processor, which is configured to implement the signal sending method provided in any embodiment of the present application when executing a computer program.

[0222] Figure 12 It is a schematic structural diagram of a communication node provided by an embodiment. As Figure 12 shown, the communication node includes a processor 60, a memory 61, and a communication interface 62; the number of processors 60 in the communication node may be one or more, Figure 12 taking one processor 60 as an example; the processor 60, the memory 61, and the communication interface 62 in the communication node may be connected through a bus or other means, Figure 12 taking the connection through a bus as an example. The bus represents one or more of several bus structures, including a memory bus or a memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any bus structure in a variety of bus structures.

[0223] The memory 61, as a computer-readable storage medium, may be configured to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the method in the embodiment of the present application. The processor 60 executes at least one functional application and data processing of the communication node by running the software programs, instructions, and modules stored in the memory 61, that is, implements the above method.

[0224] The memory 61 may include a program storage area and a data storage area. The program storage area may store an operating system and application programs required for at least one function. The data storage area may store data created according to the use of the terminal and the like. In addition, the memory 61 may include a high-speed random access memory and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some instances, the memory 61 may include a memory remotely disposed relative to the processor 60, and these remote memories may be connected to the communication node through a network. Examples of the above network include but are not limited to the Internet, an intranet, a network, a mobile communication network, and combinations thereof.

[0225] The communication interface 62 may be configured to receive and transmit data.

[0226] An embodiment of the present application further provides a communication system, including the above-mentioned first communication node and second communication node.

[0227] An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method provided in any embodiment of the present application is implemented.

[0228] The computer storage medium of the embodiment of the present application may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. The computer-readable storage medium includes (a non-exhaustive list): an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, the computer-readable storage medium may be any tangible medium that contains or stores a program, and the program may be used by or in combination with an instruction execution system, apparatus, or device.

[0229] A computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, carrying computer-readable program code therein. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device.

[0230] The program code contained on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, Radio Frequency (RF), etc., or any suitable combination of the foregoing.

[0231] The computer program code for performing the operations of the present disclosure may be written in one or more programming languages, or combinations of programming languages, including object-oriented programming languages (such as Java, Smalltalk, C++, Ruby, Go), and also including conventional procedural programming languages (such as the "C" language or similar programming languages). The program code may execute entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network (including a Local Area Network (LAN) or a Wide Area Network (WAN)), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0232] Those skilled in the art should understand that the term user terminal encompasses any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser, or an in-vehicle mobile station.

[0233] In general, the various embodiments of the present application may be implemented in hardware or dedicated circuits, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software executable by a controller, a microprocessor, or other computing devices, although the present application is not limited thereto.

[0234] Embodiments of the present application can be implemented by a data processor of a mobile device executing computer program instructions, for example, in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions can be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state-setting data, or source code or object code written in any combination of one or more programming languages.

[0235] Any block diagram of a logical process in the drawings of the present application can represent program steps, or can represent interconnected logical circuits, modules, and functions, or can represent a combination of program steps and logical circuits, modules, and functions. The computer program can be stored in a memory. The memory can be of any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical memory devices and systems (digital versatile disc DVD or CD optical disc), etc. The computer-readable medium can include a non-transitory storage medium. The data processor can be of any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), and a processor based on a multi-core processor architecture.

Claims

1. A signal sending method, characterized in that: Applied to a first communication node, the method comprises: Determine a transmission resource set; wherein the transmission resource set includes P transmission resources, and the transmission resources include frequency domain resources and / or code domain resources; Send a first signal; wherein the first signal includes R identification codes ID, and the transmission resource set is used for the second communication node associated with the R IDs to send a second signal, and R and P are both integers greater than 1.

2. The method according to claim 1, characterized in that The transmission resource includes a transmission subband, and the transmission resource set is used for the second communication node to send a second signal on a transmission subband in the transmission resource set; or, The transmission resource includes an extension code, and the transmission resource set is used by the second communication node to extend the data of the second signal using the extension code in the transmission resource set and send the extended second signal; or, The transmission resources include a transmission subband and an extension code. The transmission resource set is used by the second communication node to extend the data of the second signal using the extension code in the transmission resource set, and send the extended second signal on the corresponding transmission subband.

3. The method according to claim 1, characterized in that The transmission resource includes a transmission sub-band, and the transmission sub-band bandwidth includes a second signal bandwidth and a frequency domain guard interval; The frequency domain guard interval is determined according to at least one of a frequency shift value of the second signal, a bandwidth of the second signal, and a type of the second communication node.

4. The method according to claim 1, characterized in that The transmission resource includes a transmission subband; The method further comprises: Determining the number of the transmission sub-bands according to the total frequency band bandwidth and the transmission sub-band bandwidth; or, The number of the transmission sub-bands is determined according to the total frequency band bandwidth and the second signal bandwidth.

5. The method according to claim 1, characterized in that R is less than or equal to P, each of the R IDs corresponds to a transmission resource in the transmission resource set, and different IDs correspond to different transmission resources, and the second communication node associated with the ID sends a second signal based on the transmission resource corresponding to the ID.

6. The method according to claim 5, characterized in that The transmission resource index corresponding to the i-th ID is i-1, or the transmission resource index corresponding to the i-th ID is Pi, 1≤i≤R and i is an integer.

7. The method according to claim 1, characterized in that If R is greater than P, the first signal further includes at least one of the following: transmission resource indication information and delay indication information; The transmission resource indication information is used to indicate RP transmission resources in the transmission resource set; The delay indication information is used to indicate a time interval between the first signal and the second signal.

8. The method according to claim 7, characterized in that When 1≤i≤P, the transmission resource index corresponding to the i-th ID is i-1; When P+1≤i≤R, the transmission resource corresponding to the i-th ID is one of the RP transmission resources.

9. The method according to claim 7, characterized in that: The time interval between the second signal corresponding to the first to P-th IDs and the first signal is smaller than the time interval between the second signal corresponding to the P+1-th to R-th IDs and the first signal.

10. The method according to claim 7, characterized in that The delay indication information is used to indicate the time interval between the second signal corresponding to the P+1th to Rth IDs and the first signal; The time interval between the second signal corresponding to the first to P-th IDs and the first signal is a predefined time interval.

11. The method according to claim 10, characterized in that The transmission resources include extension codes; The time interval indicated by the time delay indication information minus the predefined time interval is equal to an integer multiple of the extended code length.

12. The method according to claim 5, characterized in that The method further includes: Sending a first trigger instruction; wherein, the first trigger instruction includes at least one of H IDs and transmission resource indication information, 1≤H≤R and H is an integer, and the first trigger instruction is used to trigger the second communication nodes associated with the H IDs to send a second signal, and the transmission resource indication information is used to indicate H transmission resources in the transmission resource set.

13. The method according to claim 12, characterized in that Each of the H IDs corresponds to one of the H transmission resources indicated by the transmission resource indication information; or, The i-th ID among the H IDs corresponds to the transmission resource index i-1 in the transmission resource set.

14. The method according to claim 12, characterized in that The time interval between the second signal corresponding to the R IDs and the first signal is a predefined first time interval; The time interval between the second signal corresponding to the H IDs and the first trigger instruction is a predefined second time interval.

15. The method according to claim 12, characterized in that The data volume of the first trigger instruction is smaller than the data volume of the first signal.

16. The method according to claim 1, characterized in that If R is greater than P, the method further includes: Sending a second trigger instruction; wherein, the first signal triggers the second communication nodes associated with the first to the P-th IDs among the R IDs to send a second signal, and the second trigger instruction triggers the second communication nodes associated with the (k×P + 1)-th to the min((k + 1)P, R)-th IDs among the R IDs to send a second signal, where k represents the k-th time of sending the second trigger instruction after the first signal, and k is greater than or equal to 1.

17. The method according to claim 16, characterized in that The transmission resource index corresponding to the i-th ID among the R IDs is mod(i - 1, P), 1≤i≤R and i is an integer; or, When 1≤i≤P, the transmission resource index corresponding to the i-th ID among the R IDs is i - 1, and when P < i≤R, the transmission resource corresponding to the i-th ID among the R IDs is indicated by the transmission resource indication information, and the transmission resource indication information is included in the first signal and / or included in the second trigger instruction.

18. The method according to claim 16, characterized in that The time interval between the second signal corresponding to the first to the P-th IDs and the first signal is a predefined first time interval; the time interval between the second signal corresponding to the (k×P + 1)-th to the min((k + 1)P, R)-th IDs and the k-th transmitted second trigger instruction is a predefined second time interval.

19. The method according to claim 1, characterized in that The first signal further includes R transmission resource indexes; One of the R IDs and one of the R transmission resource indexes form a resource configuration group; the second communication node associated with the j-th ID uses the transmission resource corresponding to the transmission resource index in the resource configuration group where the j-th ID is located to send a second signal, 1≤j≤R and j is an integer.

20. The method according to any one of claims 7, 12, and 17, wherein The transmission resource indication information is a bitmap sequence of length P, the P bits of the bitmap sequence correspond one-to-one to the P transmission resources of the transmission resource set, and the bitmap sequence is used to indicate Z transmission resources, Z is less than or equal to P, and Z is greater than or equal to F, where F is the number of IDs contained in the first signal, the first trigger instruction or the second trigger instruction.

21. A signal sending method, characterized in that: Applied to a second communication node, the method comprises: Determine a transmission resource set; wherein the transmission resource set includes P transmission resources, and the transmission resources include frequency domain resources and / or code domain resources; Receive a first signal; wherein the first signal includes R identification codes ID, and R and P are both integers greater than 1; A transmission resource is determined in the transmission resource set, and a second signal is sent based on the transmission resource.

22. The method according to claim 21, characterized in that The ID of the second communication node is the yth ID among the R IDs, 1≤y≤R and y is an integer; The determining a transmission resource within the transmission resource set includes: Determine the transmission resource with a transmission resource index y-1 in the transmission resource set as the transmission resource used by the second communication node to send the second signal; or, The transmission resource with the transmission resource index Py in the transmission resource set is determined as the transmission resource used by the second communication node to send the second signal.

23. The method according to claim 21, characterized in that If R is greater than P, the ID of the second communication node is the yth ID among the R IDs, 1≤y≤R and y is an integer; the first signal further includes at least one of the following: transmission resource indication information and delay indication information; the transmission resource indication information is used to indicate RP transmission resources in the transmission resource set; The delay indication information is used to indicate the time interval between the first signal and the second signal; The determining a transmission resource within the transmission resource set includes: If 1≤y≤P, the transmission resource corresponding to the transmission resource index y-1 in the transmission resource set is determined as the transmission resource used by the second communication node to send the second signal; If P+1≤y≤R, one of the RP transmission resources indicated in the transmission resource indication information is determined as the transmission resource used by the second communication node to send the second signal.

24. The method according to claim 21, characterized in that The determining a transmission resource within the transmission resource set includes: If the ID of the second communication node is not included in the R IDs, then after receiving the first signal, the first trigger instruction is received, and the first trigger instruction includes H IDs and at least one of the transmission resource indication information. If the ID of the second communication node is the yth ID among the H IDs, then the transmission resource corresponding to the yth transmission resource index indicated by the transmission resource indication information is determined as the transmission resource used by the second communication node to send the second signal, or, the transmission resource corresponding to the transmission resource index y-1 in the transmission resource set is determined as the transmission resource used by the second communication node to send the second signal; wherein, 1≤y≤H and y is an integer, 1≤H≤R and H is an integer.

25. The method according to claim 21, characterized in that The ID of the second communication node is the y-th ID among the R IDs, where 1 ≤ y ≤ R and y is an integer. If R is greater than P, determining a transmission resource within the transmission resource set includes: Determining the transmission resource with a transmission resource index of mod(y - 1, P) in the transmission resource set as the transmission resource for the second communication node to send the second signal; or, When 1 ≤ y ≤ P, determining the transmission resource with a transmission resource index of y - 1 in the transmission resource set as the transmission resource for the second communication node to send the second signal, and when P < y ≤ R, determining the transmission resource for the second communication node to send the second signal according to the transmission resource indication information.

26. The method according to claim 25, characterized in that Sending the second signal based on the transmission resource includes: On Receiving After the second trigger instruction, a second signal is sent based on the transmission resource.

27. The method according to claim 21, characterized in that Determining a transmission resource within the transmission resource set includes: Determining the transmission resource corresponding to the transmission resource index in the resource configuration group where the ID of the second communication node is located as the transmission resource for the second communication node to send the second signal.

28. A communication node, characterized in that: Including: A processor; The processor is configured to implement the signal sending method according to any one of claims 1 to 20, or implement the signal sending method according to any one of claims 21 to 27 when executing a computer program.

29. A computer-readable storage medium storing a computer program, characterized in that: The computer program, when executed by the processor, implements the signal sending method according to any one of claims 1 to 20, or implements the signal sending method according to any one of claims 21 to 27.

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