Signal sending method, communication node, and storage medium

Abstract

The present application discloses a signal sending method, a communication node, and a storage medium. The method comprises: determining a transmission resource set, wherein the transmission resource set comprises P transmission resources, and the transmission resources comprise frequency domain resources and / or code domain resources (201); and sending a first signal, wherein the first signal comprises R identifiers (IDs), the transmission resource set is used for a second communication node associated with the R IDs to send a second signal, and both R and P are integers greater than 1 (202).

Description

Signal transmission method, communication node and storage medium Technical Field

[0001] This application relates to the field of communication technology, such as a signal transmission method, a communication node, and a storage medium. Background Technology

[0002] With the continuous advancement of radio technology, a wide variety of radio services have emerged. In addition to cellular services, Long Term Evolution (LTE) and New Radio (NR) systems also include Passive Internet of Things (Passive IoT) services or Ambient IoT services.

[0003] In related technologies, in passive IoT or environmental IoT communication technologies, readers and terminal devices typically communicate using Time Division Multiplexing (TDM). During communication between a reader and multiple terminal devices, the uplink signals from these devices need to be transmitted on different time-domain resources, and these uplink signals cannot overlap in the time domain. Therefore, the entire communication process is time-consuming and inefficient. Summary of the Invention

[0004] This application provides a signal transmission method applied to a first communication node, the method comprising:

[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 ID, and the transmission resource set is used for the second communication nodes associated with the R IDs to send a second signal, where R and P are integers greater than 1.

[0007] This application provides a signal transmission method applied to a second communication node, the method comprising:

[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 ID, where R and P are integers greater than 1;

[0010] A transmission resource is determined within the set of transmission resources, and a second signal is sent based on the transmission resource.

[0011] This application provides a communication node, including a processor; the processor is used to implement the signal transmission method of any of the above embodiments when executing a computer program.

[0012] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the signal transmission method of any of the above embodiments.

[0013] Further details regarding the above embodiments and other aspects of this application, as well as their implementations, are provided in the accompanying drawings, detailed description, and claims. Attached Figure Description

[0014] Figure 1 is a schematic diagram of a wireless communication network according to an embodiment;

[0015] Figure 2 is a flowchart illustrating a signal transmission method according to an embodiment;

[0016] Figure 3 is a schematic diagram of a second signal and transmission resources in a signal transmission method provided in an embodiment;

[0017] Figure 4 is another schematic diagram of the second signal and transmission resources in a signal transmission method provided in one embodiment;

[0018] Figure 5 is another schematic diagram of the second signal and transmission resources in a signal transmission method provided in one embodiment;

[0019] Figure 6 is another schematic diagram of the second signal and transmission resources in a signal transmission method provided in one embodiment;

[0020] Figure 7 is another schematic diagram of the second signal and transmission resources in a signal transmission method provided in one embodiment;

[0021] Figure 8 is a schematic diagram of a resource configuration group in a signal transmission method provided in an embodiment;

[0022] Figure 9 is a flowchart illustrating another signal transmission method provided in one embodiment;

[0023] Figure 10 is a schematic diagram of a signal transmitting device according to an embodiment;

[0024] Figure 11 is a schematic diagram of another signal transmitting device provided in one embodiment;

[0025] Figure 12 is a schematic diagram of the structure of a communication node provided in one embodiment. Detailed Implementation

[0026] It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0027] The signal transmission method provided in this application can be applied to various wireless communication systems, such as Long Term Evolution (LTE) systems, 4th-generation (4G) systems, 5th-generation (5G) systems, LTE and 5G hybrid architecture systems, NR systems, the Internet of Things (IoT), and new communication systems that will emerge in the future development of communication, such as 6th-generation (6G) systems.

[0028] Figure 1 is a schematic diagram of a wireless communication network according to an embodiment. This wireless communication network can be an environmental IoT or a passive IoT within the aforementioned wireless communication system. As shown in Figure 1, a first communication node 11 can communicate with multiple second communication nodes 12. In related technologies, the uplink signals from multiple second communication nodes 12 need to be transmitted to the first communication node 11 on different time-domain resources. These multiple uplink signals cannot overlap in the time domain, therefore the entire communication process is time-consuming and inefficient.

[0029] In this application embodiment, a signal transmission method, communication node and storage medium that can operate on the above-mentioned wireless communication network are provided. The method adopts frequency division multiplexing (FDM) and / or code division multiplexing (CDM) to enable the uplink signals of multiple second communication nodes to be transmitted in parallel on the same time domain resources, thereby improving system throughput and communication efficiency and reducing communication latency.

[0030] The signal transmission method, communication nodes, and their technical effects are described below.

[0031] Figure 2 is a schematic flowchart of a signal transmission method according to an embodiment. The signal transmission method provided in this embodiment can be applied to a first communication entity, such as the first communication entity in Figure 1. As shown in Figure 2, the signal transmission method provided in this embodiment includes the following steps.

[0032] Step 201: Determine the set of transmission resources.

[0033] The transmission resource set includes P transmission resources. These transmission resources include frequency domain resources and / or code domain resources.

[0034] In this embodiment, the frequency domain resources 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.

[0035] In some embodiments, the transmission resource is a transmission subband. The transmission resource set is a transmission subband set, containing P transmission subbands. A transmission subband is a frequency domain resource that can be used for signal transmission. A transmission subband can be a frequency domain resource composed of frequency domain units such as a bandwidth part (BWP), physical resource block, subcarrier, and subchannel.

[0036] In some embodiments, the transmission subband bandwidth includes a second signal bandwidth and a frequency domain guard interval. In this embodiment, the frequency domain guard interval is a reserved bandwidth to prevent interference between adjacent frequency domain signals. The frequency domain guard interval can be determined based on at least one of the following: the frequency shift value of the second signal, the second signal bandwidth, and the type of the second communication node.

[0037] The frequency shift value of the second signal is the shift of the center frequency of the second signal relative to the center frequency of the carrier wave (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, and the frequency shift value of the second signal is f1. The carrier wave (CW) can be used by the second communication node to transmit backscatter signals. The second communication node can be of at least two types. For example, the types of the second communication node include backscatter terminal type and non-backscatter terminal type.

[0038] In some embodiments, the frequency domain guard interval is determined based on the frequency shift value of the second signal. With other influencing factors fixed, the larger the frequency shift value of the second signal, the larger the frequency domain guard interval. This is because, with other influencing factors fixed, a larger frequency shift value of the second signal results in a larger bandwidth and wider harmonics. To avoid harmonic interference with other adjacent frequency band signals, a larger frequency domain guard interval needs to be reserved.

[0039] In some embodiments, the frequency domain guard interval is determined based on the second signal bandwidth. The larger the signal bandwidth, the larger the frequency domain guard interval.

[0040] In some embodiments, the frequency domain guard interval is determined according to the type of the second communication node. Specifically, the frequency domain guard interval corresponding to the backscatter terminal type is greater than the frequency domain guard interval for the non-backscatter terminal type.

[0041] In some embodiments, the transmission resource set includes the number of transmission subbands P, the total bandwidth F, and the transmission subband bandwidth B, which satisfy the following conditions: in, Indicates to The result is rounded down.

[0042] In some embodiments, the transmission subband bandwidth is equal to the sum of the second signal bandwidth and the frequency domain guard interval. In one specific example, the second signal bandwidth corresponds to the transmission subband bandwidth. For example, the second signal has A possible signal bandwidths, each of which corresponds to A transmission subband bandwidths. In another specific example, the number of transmission subbands included in the transmission resource set is determined based on the second signal bandwidth and the total bandwidth. For example, the second signal bandwidth and the total bandwidth correspond to the number of transmission subbands included in the transmission resource set. Optionally, in this embodiment, before step 201, the signal transmission method provided in this embodiment further includes the following steps: determining the number of transmission subbands based on the total bandwidth and the transmission subband bandwidth; or, determining the number of transmission subbands based on the total bandwidth and the second signal bandwidth.

[0043] In some embodiments, the transmission resource is a spreading code. The transmission resource set is a spreading code set containing P spreading codes. In this embodiment, the spreading code refers to an orthogonal or pseudo-orthogonal sequence. This embodiment does not limit the length of the spreading code. For example, the spreading code length can be 4 or 8, etc. The spreading code length is the number of elements contained in a spreading code; for example, the length of the spreading code {1, 1, -1, -1} is 4.

[0044] In some embodiments, the transmission resource includes a transmission subband and a spreading code. A transmission resource consists of one transmission subband and one spreading code; that is, one transmission resource index corresponds to one transmission subband index and one spreading code index. The transmission resource set contains P transmission resources, where P = K × L, K is the number of transmission subbands, and L is the number of spreading codes.

[0045] Step 202: Send the first signal.

[0046] The first signal comprises R identification codes (IDs). A transmission resource set is used by the second communication nodes associated with these R IDs to send the second signal. Both R and P are integers greater than 1.

[0047] In this embodiment, the transmission resource set is used for the second communication nodes associated with R IDs to send the second signal, which enables multiple second communication nodes to send signals based on different transmission resources to achieve frequency division multiplexing and / or code division multiplexing.

[0048] In one implementation, the transmission resources include transmission subbands, and the transmission resource set is used by the second communication node to transmit a second signal on the transmission subbands in the transmission resource set. That is, the second communication node determines a transmission subband from the transmission resource set and transmits the second signal on that transmission subband.

[0049] In another implementation, the transmission resources include an expansion code. The transmission resource set is used by the second communication node to expand the data of the second signal using the expansion code in the transmission resource set, and then transmits the expanded second signal. That is, the second communication node determines an expansion code from the transmission resource set and uses that expansion code to transmit the second signal.

[0050] In another implementation, the transmission resources include transmission subbands and spreading codes. The transmission resource set is used by the second communication node to extend the data of the second signal using the spreading codes in the transmission resource set, and then transmits the extended second signal on the corresponding transmission subband. That is, the second communication node determines a spreading code and a transmission subband from the transmission resource set, uses the spreading code to extend the data of the second signal, and then transmits the extended second signal on the transmission subband.

[0051] In this embodiment, the ID is the second communication node ID. The ID includes a temporary ID of the second communication node, a permanent ID of the second communication node, or a portion of the permanent ID of the second communication node. The R IDs correspond to R second communication nodes. In a specific example, the temporary identifier contains a random sequence with S bits, for example, S = 16.

[0052] 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 within a range of time intervals or a set of time intervals.

[0053] In some embodiments, the time interval between a first signal from a first communication node to a second communication node and a corresponding second signal from a second communication node to a first communication node is a predefined time interval. Alternatively, the time interval between the first signal from a first communication node to a second communication node and a corresponding second signal from a second communication node to a first communication node is indicated by delay indication information.

[0054] In some embodiments, the first communication node is a reader. The reader can be a base station, user equipment (UE), or a relay node, etc. The second communication node is an environmental IoT device. The first signal is transmitted in a reader-to-device (R2D) channel, and the second signal is transmitted in a device-to-reader (D2R) channel.

[0055] In some embodiments, the first signal includes an R2D preamble sequence and the carried data information. The second signal includes a D2R preamble sequence and the carried data information. The R2D and D2R preamble sequences can be used for signal timing synchronization.

[0056] The signal transmission method provided in this embodiment includes: determining 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; transmitting a first signal, wherein the first signal includes R identification codes (IDs), and the transmission resource set is used by the R IDs associated with second communication nodes to transmit a second signal. In this embodiment, the transmission resource set is used by the R IDs associated with second communication nodes to transmit the second signal. 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 are implemented. This is equivalent to the R IDs associated with second communication nodes transmitting the second signal in parallel on the same time domain resources, thereby improving system throughput and communication efficiency, and reducing communication latency.

[0057] Furthermore, the transmission resource set for sending a second signal by a second communication node associated with R IDs can be implemented through the following six embodiments.

[0058] Example 1.1

[0059] R is less than or equal to P, and each of the R IDs corresponds to a transmission resource in the transmission resource set, with different IDs corresponding to different transmission resources. The second communication node associated with the ID sends a second signal based on the transmission resource corresponding to the ID.

[0060] Optionally, the R IDs in the first signal are arranged in order to correspond to the indices of P transmission resources. The second communication nodes associated with the R IDs send the second signal based on the corresponding R transmission resources.

[0061] For example, 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 1st ID is 0, the transmission resource index corresponding to the 2nd ID is 1, the transmission resource index corresponding to the 3rd ID is 2, ..., and the transmission resource index corresponding to the R-th ID is R-1. Correspondingly, the second communication node associated with the 1st ID sends a second signal based on the transmission resource corresponding to transmission resource index 0, the second communication node associated with the 2nd ID sends a second signal based on the transmission resource corresponding to transmission resource index 1, the second communication node associated with the 3rd ID sends a second signal based on the transmission resource corresponding to transmission resource index 2, ..., and the second communication node associated with the R-th ID sends a second signal based on the transmission resource corresponding to transmission resource index R-1.

[0062] For example, the transmission resource index corresponding to the i-th ID is Pi. That is, the transmission resource index corresponding to the 1st ID is P-1, the transmission resource index corresponding to the 2nd ID is P-2, the transmission resource index corresponding to the 3rd ID is P-3, ..., and the transmission resource index corresponding to the R-th ID is PR. Correspondingly, the second communication node associated with the 1st ID sends a second signal based on the transmission resource corresponding to transmission resource index P-1, the second communication node associated with the 2nd ID sends a second signal based on the transmission resource corresponding to transmission resource index P-2, the second communication node associated with the 3rd ID sends a second signal based on the transmission resource corresponding to transmission resource index P-3, ..., and the second communication node associated with the R-th ID sends a second signal based on the transmission resource corresponding to transmission resource index PR.

[0063] The following is a detailed illustration of the above embodiment 1.1.

[0064] Figure 3 is a schematic diagram of a second signal and transmission resources in a signal transmission method provided in one embodiment. As shown in Figure 3, 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.

[0065] Figure 4 is another schematic diagram of the second signal and transmission resources in a signal transmission method provided in one embodiment. As shown in Figure 4, 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.

[0066] In Figures 3 and 4, transmission resource 0 represents the transmission resource corresponding to transmission resource index 0, transmission resource 1 represents the transmission resource corresponding to transmission resource index 1, transmission resource 2 represents the transmission resource corresponding to transmission resource index 2, and transmission resource 3 represents 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 repeated here.

[0067] The "second signal transmission time" in FIGS. 3 and 4 refers to the transmission duration of the second signal. The transmission times of the respective second signals may be equal or unequal. In FIGS. 3 and 4, the case where the transmission times of the respective second signals are equal is taken as an example for illustration.

[0068] In FIGS. 3 and 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 the time interval set.

[0069] Embodiment 1.2

[0070] 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.

[0071] 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, 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.

[0072] Optionally, the transmission resource index corresponding to the i-th ID is mod(i - 1, P).

[0073] 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.

[0074] 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 transmission resource indices of the R - P transmission resources from smallest to largest.

[0075] For 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 RP 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 RP transmission resources, and so on, until the transmission resource corresponding to the Rth ID is the transmission resource with the smallest transmission resource index among the RP transmission resources. That is, the (P+1)th to the Rth IDs correspond to the RP transmission resources indicated by the transmission resource indication information, and the corresponding order is the descending order of the RP transmission resource indices.

[0076] Optionally, the time interval between the second signal corresponding to the first to Pth IDs and the first signal is less than the time interval between the second signal corresponding to the (P+1)th to Rth IDs and the first signal. In other words, the transmission start time of the second signal corresponding to the (P+1)th to Rth IDs is later. This implementation avoids collisions between the second signals corresponding to the first to Pth IDs and the second signals corresponding to the (P+1)th to Rth IDs, thus improving communication reliability.

[0077] Further, among the second signals corresponding to the R IDs, the time interval between the second signals corresponding to the first to Pth 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 the set of time intervals. The time interval between the second signals corresponding to the (P+1)th to Rth 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 signals corresponding to the (P+1)th to Rth IDs and the first signal.

[0078] It should be noted that the time intervals between the second signal and the first signal corresponding to the P+1 to Rth IDs can all be the same, partially the same, or all different. For example, assuming P is 3, R is 6, the time interval between the second signal and the first signal corresponding to the 4th ID is T4, the time interval between the second signal and the first signal corresponding to the 5th ID is T5, and the time interval between the second signal and the first signal corresponding to the 6th ID is T6. Then, T4, T5, and T6 can all be the same, partially the same, or all different. Optionally, in this implementation, the first signal may also include the mapping relationship between each of the RP transmission resources and the time interval.

[0079] In some embodiments, the transmission resource includes a spreading code, and the time interval T1 indicated by the delay indication information minus the predefined time interval T2 is an integer multiple of the spreading code length. This implementation can guarantee aligned spreading codes, thereby improving the success rate of second signal transmission.

[0080] The following is a detailed illustration of Embodiment 1.2.

[0081] Figure 5 is another schematic diagram of the second signal and transmission resources in a signal transmission method provided in one embodiment. As shown in Figure 5, 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, assuming 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 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. The second communication node associated with the fifth ID 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 sixth ID sends the 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 RP transmission resources indicated by the transmission resource indication information in ascending order of transmission resource index.

[0082] In Figure 5, the time intervals between the second signal and the first signal corresponding to the first to fourth IDs are predefined time intervals. The time intervals between the second signal and the first signal corresponding to the fifth and sixth IDs are indicated by delay indication information. Figure 5 uses the example of the time interval between the second signal and the first signal corresponding to the fifth ID, and the time interval between the second signal and the first signal corresponding to the sixth ID being the same, for illustration.

[0083] Example 1.3

[0084] R is less than or equal to P, and each of the R IDs corresponds to a transmission resource in the transmission resource set, with different IDs corresponding to different transmission resources. The second communication node associated with the ID sends a second signal based on the transmission resource corresponding to the ID.

[0085] Optionally, the R IDs in the first signal are arranged in order to correspond to the indices of P transmission resources. The second communication nodes associated with the R IDs send the second signal based on the corresponding R transmission resources.

[0086] For example, similar to Embodiment 1.1, the transmission resource index corresponding to the i-th ID among the R IDs is i-1. Alternatively, the transmission resource index corresponding to the i-th ID among the R IDs is Pi.

[0087] The difference between this embodiment and embodiment 1.1 is that, after executing step 202, i.e., after sending the first signal, the following step is further included: sending 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 node associated with the H IDs to send a second signal. The transmission resource indication information is used to indicate the H transmission resources in the transmission resource set. Further, the transmission resource indication information is used to indicate the index of the H transmission resources.

[0088] In one implementation, each of the H IDs corresponds to one of the H transmission resources indicated by the transmission resource indication information. Further, different IDs among the H IDs correspond to different transmission resources. 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 send second signals based on the corresponding H transmission resources.

[0089] For example, the first ID among the H IDs corresponds to transmission resource index 0 in the transmission resource set, the second ID among the H IDs corresponds to transmission resource index 1 in the transmission resource set, ..., the Hth ID among the H IDs corresponds to transmission resource index H-1 in the transmission resource set.

[0090] In a specific example, if the first trigger instruction includes transmission resource indication information, then the order of the H IDs in the first trigger instruction corresponds to the indices of the H transmission resources indicated by the transmission resource indication information. If the first trigger instruction does not include transmission resource indication information, then the order of the H IDs in the first trigger instruction corresponds to the transmission resource indices 0 to H-1 in the transmission resource set.

[0091] Optionally, the data size of the first trigger instruction is less than the data size of the first signal. The first signal also 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 the second signal. However, the instruction information data carried in the first signal does not need to be repeatedly sent in the first trigger instruction, thereby saving data overhead.

[0092] 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 time interval set. 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.

[0093] In some embodiments, the transmission resources include a spreading code, and the time interval between the start times of the second signals corresponding to the R IDs and the start times of the second signals corresponding to the H IDs is an integer multiple of the spreading code length. This implementation can guarantee aligned spreading codes, thereby improving the success rate of second signal transmission.

[0094] The following is a detailed illustration of Embodiment 1.3.

[0095] Figure 6 is another schematic diagram of the second signal and transmission resources in a signal transmission method provided in one embodiment. As shown in Figure 6, 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 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, 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. In this schematic diagram, H is 2, that is, the first trigger instruction contains 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.

[0096] In Figure 6, 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 command and the first trigger command is a predefined second time interval.

[0097] Example 1.4

[0098] 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 the P-th 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 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.

[0099] In one implementation, 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. Where mod(i - 1, P) represents taking 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.

[0100] In another implementation, 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 resources corresponding to the i-th ID among the R IDs are indicated by transmission resource indication information.

[0101] 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. <0000​​Optionally, the time interval between the second signal corresponding to the first to Pth 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 time interval set. The time interval between the second signal corresponding to the k×P+1th to min((k+1)P, R)th IDs and the second trigger command transmitted in the kth time is a predefined second time interval. The predefined first time interval and the predefined second time interval may be equal or unequal.

[0104] In some embodiments, the transmission resource includes an extension code, wherein the time interval between the start time of the second signal corresponding to the first to the Pth IDs and the start time of the second signal corresponding to the k×P+1 to the min((k+1)P,R)th IDs is equal to an integer multiple of the extension code length, so as to achieve an aligned extension code.

[0105] The following is a detailed illustration of Embodiment 1.4.

[0106] Figure 7 is another schematic diagram of the second signal and transmission resources in a signal transmission method provided in one embodiment. As shown in Figure 7, in this schematic diagram, R is 6 and P is 4. In this embodiment, the first signal contains 4 IDs, and the transmission resource set contains 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, 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. 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 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 transmission resource index 2 indicated by the transmission resource indication information. 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 transmission resource index 1 and transmission resource index 2.

[0107] In Figure 7, the time interval between the second signal corresponding to the first to fourth IDs and the first signal is a predefined first time interval. The time interval between the second signal corresponding to the fifth to sixth IDs and the second trigger command transmitted for the first time is a predefined second time interval.

[0108] Example 1.5

[0109] In this embodiment, the first signal further includes R transmission resource indices. One of the R IDs and one of the R transmission resource indices form a resource configuration group. The second communication node associated with the j-th ID sends the second signal using the transmission resource corresponding to the transmission resource index in the resource configuration group containing the j-th ID, where 1 ≤ j ≤ R and j is an integer. That is, in this embodiment, the first signal includes R resource configuration groups, each containing an ID and a transmission resource index. For a resource configuration group, the second communication node associated with the ID sends the second signal using the transmission resource corresponding to the transmission resource index.

[0110] In some embodiments, in the first signal, the R resource configuration groups are arranged in the order of the first resource configuration group to the Rth resource configuration group.

[0111] Figure 8 is a schematic diagram of a resource configuration group in a signal transmission method provided by an embodiment. As shown in Figure 8, the R resource configuration groups are arranged in the following order: first resource configuration group, second resource configuration group, ..., Rth resource configuration group. Each resource configuration group includes an ID and a transmission resource index.

[0112] In a specific example, the first signal comprises R resource configuration groups, each containing an ID, a transmission resource index, and delay indication information. Within 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 indicates the time interval between the second signal and the first signal.

[0113] Example 1.6

[0114] 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 indicates the transmission resources used by the second signals corresponding to the R IDs. The delay indication information indicates the time interval 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 all be the same, partially the same, or all different.

[0115] The following describes the implementation method of the transmission resource indication information provided in this embodiment.

[0116] In embodiments 1.2, 1.3, 1.4, and 1.6 above, the transmission resource indication information involved can be a bitmap sequence of length P. Each of the P bits in the bitmap sequence corresponds one-to-one with a P transmission resource 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, where F is the number of IDs contained in the first signal, the first trigger instruction, or the second trigger instruction.

[0117] Optionally, the P bits of the bitmap sequence correspond one-to-one with the P transmission resources of the transmission resource set, with the bit value corresponding to the indicated transmission resource index being 1 and the bit value corresponding to the unindicated transmission resource index being 0. For example, in a bitmap sequence of length 8, if the first signal indicates 4 transmission resource indices, namely 0, 2, 5, and 6, then the bitmap sequence sent in the first signal is 01100101.

[0118] 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 sequentially correspond to the F transmission resources indicated by the bitmap sequence. For example, the first ID to the Fth ID in the first signal (or the first trigger instruction, or the second trigger instruction) respectively correspond to the F transmission resources with a bit value of 1 from the least significant bit to the most significant bit indicated by the bitmap sequence, or respectively correspond to the F transmission resources with a bit value of 1 from the most significant bit to the least significant bit indicated by the bitmap sequence.

[0119] In some embodiments, the transmission resource is a transmission subband. The number of transmission subbands Z indicated by the bitmap sequence is greater than the number of IDs F. In this case, at least one transmission band used by the second signal of the second communication node associated with the F IDs contains W transmission subbands, where W is greater than or equal to 2. Therefore, the transmission of the second signal of the second communication node associated with the F IDs occupies Z transmission subbands, where Z is greater than F. The number of transmission subbands contained in the transmission band of a second signal can be determined based on the bandwidth of the second signal. For example, one transmission subband is used when the signal bandwidth is A, and two transmission subbands are used when the signal bandwidth is 2*A.

[0120] The transmission sub-bands corresponding to the F transmission frequency bands (each ID corresponds to one transmission frequency band, for a total of F transmission frequency bands) are sequentially the Z transmission sub-bands indicated by the bitmap sequence. For example, the transmission sub-bands corresponding to the first to the Fth transmission frequency bands are sequentially the Z bit-valued sub-bands with a value of 1 from the least significant bit to the most significant bit indicated by the bitmap sequence, or sequentially the Z bit-valued sub-bands with a value of 1 from the most significant bit to the least significant bit indicated by the bitmap. Furthermore, the transmission resource indication information may also include the correspondence between transmission sub-bands and transmission frequency bands; for example, transmission sub-band 4 and transmission sub-band 5 correspond to transmission frequency band 4.

[0121] In some embodiments, in the first signal, the R IDs and the bitmap sequence are arranged in the following order: the first ID to the Rth ID, and the bitmap sequence.

[0122] 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.

[0123] 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.

[0124] In some embodiments, the transmission resource index is the sequence 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.

[0125] Figure 9 is a flowchart illustrating another signal transmission method provided in one embodiment. The signal transmission method provided in this embodiment can be applied to a second communication entity, such as the second communication entity in Figure 1. As shown in Figure 9, the signal transmission method provided in this embodiment includes the following steps.

[0126] Step 901: Determine the set of transmission resources.

[0127] The transmission resource set includes P transmission resources, which include frequency domain resources and / or code domain resources.

[0128] In this embodiment, the frequency domain resources 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.

[0129] In some embodiments, the transmission resource is a transmission subband. The transmission resource set is a transmission subband set, containing P transmission subbands. A transmission subband is a frequency domain resource that can be used for signal transmission. A transmission subband can be a frequency domain resource composed of frequency domain units such as BWP, physical resource block, subcarrier, and subchannel.

[0130] In some embodiments, the transmission subband bandwidth includes a second signal bandwidth and a frequency domain guard interval. In this embodiment, the frequency domain guard interval is a reserved bandwidth to prevent interference between adjacent frequency domain signals. The frequency domain guard interval can be determined based on at least one of the following: the frequency shift value of the second signal, the second signal bandwidth, and the type of the second communication node.

[0131] The frequency shift value of the second signal is the shift 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, and the frequency shift value of the second signal is f1. The carrier CW can be used by the second communication node to transmit backscatter signals. The second communication node can be of at least two types. For example, the types of the second communication node include backscatter terminal type and non-backscatter terminal type.

[0132] In some embodiments, the frequency domain guard interval is determined based on the frequency shift value of the second signal. With other influencing factors fixed, the larger the frequency shift value of the second signal, the larger the frequency domain guard interval. This is because, with other influencing factors fixed, a larger frequency shift value of the second signal results in a larger bandwidth and wider harmonics. To avoid harmonic interference with other adjacent frequency band signals, a larger frequency domain guard interval needs to be reserved.

[0133] In some embodiments, the frequency domain guard interval is determined based on the second signal bandwidth. The larger the signal bandwidth, the larger the frequency domain guard interval.

[0134] In some embodiments, the frequency domain guard interval is determined according to the type of the second communication node. Specifically, the frequency domain guard interval corresponding to the backscatter terminal type is greater than the frequency domain guard interval for the non-backscatter terminal type.

[0135] In some embodiments, the transmission resource set includes the number of transmission subbands P, the total bandwidth F, and the transmission subband bandwidth B, which satisfy the following conditions: in, Indicates to The result is rounded down.

[0136] In some embodiments, the transmission subband bandwidth is equal to the sum of the second signal bandwidth and the frequency domain guard interval. In one specific example, the second signal bandwidth corresponds to the transmission subband bandwidth. In another specific example, the number of transmission subbands included in the transmission resource set is determined based on the second signal bandwidth and the total bandwidth.

[0137] In some embodiments, the transport resource is an extension code. The transport resource set is an extension code set containing P extension codes.

[0138] In some embodiments, the transmission resource includes a transmission subband and a spreading code. A transmission resource consists of one transmission subband and one spreading code; that is, one transmission resource index corresponds to one transmission subband index and one spreading code index. The transmission resource set contains P transmission resources, where P = K × L, K is the number of transmission subbands, and L is the number of spreading codes.

[0139] Step 902: Receive the first signal.

[0140] The first signal includes R identification codes ID, where R and P are both integers greater than 1.

[0141] 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 a temporary ID, a permanent ID, or a portion of the permanent ID of the second communication node. The R IDs correspond to R second communication nodes.

[0142] Step 903: Determine a transmission resource within the set of transmission resources, and send a second signal based on the transmission resource.

[0143] In this embodiment, a transmission resource within the transmission resource set can be determined based on the order of the second communication node's ID among R IDs. The second communication node then transmits a second signal based on this 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. Determining a transmission resource within the transmission resource set includes: determining the transmission resource with index y-1 in the transmission resource set as the transmission resource used by the second communication node to transmit the second signal; or, determining the transmission resource with index Py in the transmission resource set as the transmission resource used by the second communication node to transmit the second signal.

[0144] In one implementation, the transmission resources include transmission subbands, and the transmission resource set is used by the second communication node to transmit a second signal on the transmission subbands in the transmission resource set. That is, the second communication node determines a transmission subband from the transmission resource set and transmits the second signal on that transmission subband.

[0145] In another implementation, the transmission resources include an expansion code. The transmission resource set is used by the second communication node to expand the data of the second signal using the expansion code in the transmission resource set, and then transmits the expanded second signal. That is, the second communication node determines an expansion code from the transmission resource set and uses that expansion code to transmit the second signal.

[0146] In another implementation, the transmission resources include transmission subbands and spreading codes. The transmission resource set is used by the second communication node to extend the data of the second signal using the spreading codes in the transmission resource set, and then transmits the extended second signal on the corresponding transmission subband. That is, the second communication node determines a spreading code and a transmission subband from the transmission resource set, uses the spreading code to extend the data of the second signal, and then transmits the extended second signal on the transmission subband.

[0147] In some embodiments, the time interval between the second signal and the first signal is within a range of time intervals or a set of time intervals.

[0148] 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.

[0149] The signal transmission method provided in this embodiment includes: determining a transmission resource set, wherein the transmission resource set includes P transmission resources, the transmission resources including frequency domain resources and / or code domain resources; receiving a first signal, wherein the first signal includes R identification codes ID, where R and P are both integers greater than 1; determining a transmission resource within the transmission resource set; and transmitting a second signal based on the transmission resource. In this embodiment, the transmission resource set is used for second communication nodes associated with R IDs to transmit the second signal. 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 are implemented. This is equivalent to the second communication nodes associated with R IDs transmitting the second signal in parallel on the same time domain resource, thereby improving system throughput and communication efficiency, and reducing communication latency.

[0150] Furthermore, determining a transmission resource within the set of transmission resources in step 903 can be achieved through the following six embodiments.

[0151] Example 2.1

[0152] 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, 1 ≤ y ≤ R, and y is an integer. Determining a transmission resource within the transmission resource set includes: determining the transmission resource with index y-1 in the transmission resource set as the transmission resource used by the second communication node to send the second signal; or, determining the transmission resource with index Py in the transmission resource set as the transmission resource used by the second communication node to send the second signal.

[0153] 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 the set of time intervals.

[0154] Example 2.2

[0155] 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 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.

[0156] Optionally, in this embodiment, determining a transmission resource within the transmission resource set includes: if 1≤y≤P, then determining the transmission resource corresponding to the transmission resource index y-1 within the transmission resource set as the transmission resource used by the second communication node to send the second signal; if P+1≤y≤R, then determining one of the RP transmission resources indicated in the transmission resource indication information as the transmission resource used by the second communication node to send the second signal.

[0157] For example, the P+1 to Rth IDs correspond to the RP transmission resources indicated by the transmission resource indication information, and the corresponding order is the ascending order of the RP transmission resource indices from smallest to largest. If P+1≤y≤R, then the corresponding transmission resource index is determined from the RP transmission resource indices according to the order of y in the Rth ID. For example, assuming P is 4, R is 6, and 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 two transmission resources indicated by the transmission resource indication information. As another example, assuming P is 4, R is 6, and 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 two transmission resources indicated by the transmission resource indication information.

[0158] Optionally, in this embodiment, determining a transmission resource within the transmission resource set includes: determining, as the transmission resource for the second communication node to send a second signal, the transmission resource with a transmission resource index of mod(y - 1, P) within the transmission resource set; or, when 1 ≤ y ≤ P, determining, as the transmission resource for the second communication node to send a second signal, the transmission resource with a transmission resource index of y - 1 within the transmission resource set, and when P < y ≤ R, determining, as the transmission resource for the second communication node to send a second signal, the (y - P)-th transmission resource among the R - P transmission resources indicated by the transmission resource indication information.

[0159] 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.

[0160] 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 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.

[0161] Embodiment 2.3

[0162] 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 for the second communication node to send a 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, where the first trigger instruction includes at least one of H IDs and transmission resource indication information, and if the ID of the second communication node is the y-th ID among the H IDs, determining, as the transmission resource for the second communication node to send a second signal, the transmission resource corresponding to the y-th transmission resource index indicated by the transmission resource indication information, or determining, as the transmission resource for the second communication node to send a second signal, the transmission resource corresponding to the transmission resource index y - 1 in the transmission resource set. Here, 1 ≤ y ≤ H and y is an integer, 1 ≤ H ≤ R and H is an integer. <000In 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 for 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 for the second communication node to send the second signal.

[0164] 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.

[0165] 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 may be equal or unequal.

[0166] Embodiment 2.4

[0167] 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, 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 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, determining 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, determining the transmission resource for the second communication node to send the second signal according to the transmission resource indication information.

[0168] 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, after receiving the second trigger instruction for a certain number of times, sending the second signal based on the transmission resource.

[0169] The transmission resource indication information in this embodiment is included in the first signal and / or included in the second trigger instruction.

[0170] 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 command for the

[0171] Embodiment 2.5

[0172] 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 indexes, and one of the R IDs and one of the transmission resource indexes of the R transmission resources form a resource configuration group, and the first signal includes R resource configuration groups.

[0173] Exemplarily, for example, the ID of the second communication node is the y-th ID among the R IDs, 1 ≤ y ≤ R, and the second communication node determines to use the transmission resource in the y-th resource configuration group to send the second signal.

[0174] 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.

[0175] 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 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.

[0176] Embodiment 2.6

[0177] 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. 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 transmission resource set includes: determining the transmission resource used by the second communication node to send the second signal based on 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.

[0178] The implementation of resource indication information in this embodiment is similar to that in embodiments 1.2, 1.3, 1.4 and 1.6 above, and will not be repeated here.

[0179] 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.

[0180] 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.

[0181] Figure 10 is a schematic diagram of a signal transmitting device according to an embodiment. The signal transmitting device provided in this embodiment is disposed in a first communication node. As shown in Figure 10, the signal transmitting device includes the following modules: a first determining module 101 and a first transmitting module 102.

[0182] The first determining module 101 is configured to determine the set of transmission resources.

[0183] The transmission resource set includes P transmission resources, which include frequency domain resources and / or code domain resources.

[0184] The first transmitting module 102 is configured to transmit the first signal.

[0185] The first signal includes R identification codes (IDs), and the transmission resource set is used for the second communication nodes associated with the R IDs to send the second signal, where R and P are both integers greater than 1.

[0186] In some embodiments, the transmission resources include transmission subbands, and the transmission resource set is used by the second communication node to transmit a second signal on the transmission subbands in the transmission resource set. Alternatively, the transmission resources include spreading codes, and the transmission resource set is used by the second communication node to spread the data of the second signal using the spreading codes in the transmission resource set, and then transmit the spread second signal. Alternatively, the transmission resources include transmission subbands and spreading codes, and the transmission resource set is used by the second communication node to spread the data of the second signal using the spreading codes in the transmission resource set, and then transmit the spread second signal on the corresponding transmission subband.

[0187] In some embodiments, the transmission resource includes a transmission subband, the bandwidth of which includes a second signal bandwidth and a frequency domain guard interval. The frequency domain guard interval is determined based on at least one of the frequency shift value of the second signal, the second signal bandwidth, and the type of the second communication node.

[0188] In some embodiments, the transmission resources include transmission subbands. The first determining module 101 is further configured to determine the number of transmission subbands based on the total bandwidth and the transmission subband bandwidth; or, it is further configured to determine the number of transmission subbands based on the total bandwidth and the second signal bandwidth.

[0189] In some embodiments, 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. The second communication node associated with the ID sends a second signal based on the transmission resource corresponding to the ID.

[0190] 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 Pi, where 1≤i≤R and i is an integer.

[0191] 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 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.

[0192] 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 RP transmission resources.

[0193] In some embodiments, the time interval between the second signal corresponding to the first to the Pth IDs and the first signal is less than the time interval between the second signal corresponding to the P+1th to the Rth IDs and the first signal.

[0194] In some embodiments, the delay indication information is used to indicate the time interval between the second signal corresponding to the (P+1)th to the Rth ID and the first signal. The time interval between the second signal corresponding to the first to the Pth ID and the first signal is a predefined time interval.

[0195] In some embodiments, the transmission resource includes an extension code. The time interval indicated by the delay indication information minus the predefined time interval is equal to an integer multiple of the extension code length.

[0196] 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 a second signal. The transmission resource indication information is used to indicate the H transmission resources in the transmission resource set.

[0197] 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.

[0198] 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 command is a predefined second time interval.

[0199] In some embodiments, the data amount of the first trigger instruction is less than the data amount of the first signal.

[0200] 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 Pth 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 kth time of sending the second trigger instruction after the first signal, and k is greater than or equal to 1.

[0201] In some embodiments, the transmission resource index corresponding to the ith ID among the R IDs is mod(i - 1, P), where 1 ≤ i ≤ R and i is an integer; or, 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, and the transmission resource indication information is included in the first signal and / or included in the second trigger instruction.

[0202] In some embodiments, the time interval between the second signal corresponding to the first to the Pth 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 second trigger instruction transmitted at the kth time is a predefined second time interval.

[0203] In some embodiments, the first signal further includes R transmission resource indexes. One ID among the R IDs and one transmission resource index among the R transmission resource indexes of the R transmission resources form a resource configuration group; the second communication node associated with the jth ID uses the transmission resource corresponding to the transmission resource index in the resource configuration group where the jth ID is located to send the second signal, where 1 ≤ j ≤ R and j is an integer.

[0204] In some embodiments, the transmission resource indication information is a bitmap sequence with a length of P. The P bits of the bitmap sequence correspond to the P transmission resources of the transmission resource set one by one, 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.

[0205] 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 described in detail here.

[0206] Figure 11 is a schematic diagram of another signal transmitting device provided in one embodiment. The signal transmitting device provided in this embodiment is disposed in a second communication node. As shown in Figure 11, the signal transmitting device provided in this embodiment includes the following modules: a second determining module 111, a first receiving module 112, a third determining module 113, and a second transmitting module 114.

[0207] The second determining module 111 is configured to determine the set of transmission resources.

[0208] The transmission resource set includes P transmission resources, which include frequency domain resources and / or code domain resources.

[0209] The first receiving module 112 is configured to receive the first signal.

[0210] The first signal includes R identification codes ID, where R and P are both integers greater than 1.

[0211] The third determining module 113 is configured to determine a transmission resource within the set of transmission resources.

[0212] The second transmitting module 114 is configured to transmit a second signal based on the transmission resources.

[0213] 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 determining module 113 is configured to: determine the transmission resource with 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, determine the transmission resource with transmission resource index Py in the transmission resource set as the transmission resource used by the second communication node to send the second signal.

[0214] 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 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 third determining module 113 is configured to: if 1 ≤ y ≤ P, then determine 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; if P+1 ≤ y ≤ R, then determine one of the RP transmission resources indicated in the transmission resource indication information as the transmission resource used by the second communication node to send the second signal.

[0215] 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, then determine 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, then after receiving the first signal, receive the first trigger instruction, where 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, then determine 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 determine 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.

[0216] In some embodiments, the ID of the second communication node is the y-th ID among the R IDs, 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 used by 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 used by the second communication node to send the second signal, and when P < y ≤ R, determine the transmission resource used by the second communication node to send the second signal according to the transmission resource indication information.

[0217] 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.

[0218] In some embodiments, the third determination module 113 is configured as follows: 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 used by the second communication node to send the second signal.

[0219] 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.

[0220] This application also provides a communication node, including a processor, which is configured to implement the method provided in any embodiment of this application when executing a computer program. Specifically, the communication node can be a first communication node or a second communication node. The first communication node includes a processor, which is configured to implement the signal transmission method provided in any embodiment of this application when executing a computer program; the second communication node includes a processor, which is configured to implement the signal transmission method provided in any embodiment of this application when executing a computer program.

[0221] Figure 12 is a schematic diagram of a communication node according to an embodiment. As shown in Figure 12, the communication node includes a processor 60, a memory 61, and a communication interface 62. The number of processors 60 in the communication node can be one or more; Figure 12 shows one processor 60 as an example. The processor 60, memory 61, and communication interface 62 in the communication node can be connected via a bus or other means; Figure 12 shows a connection via a bus as an example. The bus represents one or more types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus structures.

[0222] The memory 61, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the methods in the embodiments of this 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, thereby implementing the methods described above.

[0223] Memory 61 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on terminal usage. Furthermore, memory 61 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, memory 61 may include memory remotely located relative to processor 60, which can be connected to a communication node via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, networks, mobile communication networks, and combinations thereof.

[0224] Communication interface 62 can be configured to receive and send data.

[0225] This application also provides a communication system, including the first communication node and the second communication node described above.

[0226] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the methods provided in any embodiment of this application.

[0227] The computer storage medium in this application embodiment can be any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. For example, a computer-readable storage medium can be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. Computer-readable storage media include (a non-exhaustive list): electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), electrically erasable, programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this application, the computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0228] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, the data signals carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0229] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wire, optical fiber, radio frequency (RF), or any suitable combination thereof.

[0230] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination of programming languages, including object-oriented programming languages ​​(such as Java, Smalltalk, C++, Ruby, and Go) and conventional procedural programming languages ​​(such as the "C" language or similar programming languages). The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network (including a Local Area Network (LAN) or a Wide Area Network (WAN)), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0231] Those skilled in the art will understand that the term user terminal encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicle-mounted mobile stations.

[0232] Generally, the various embodiments of this application can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while others can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although this application is not limited thereto.

[0233] Embodiments of this application can be implemented by executing computer program instructions through the data processor of a mobile device, for example, in a processor entity, or through hardware, or through a combination of software and hardware. The computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages.

[0234] Any block diagram of logical flow in the accompanying drawings of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored in memory. The memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical storage devices and systems (Digital Multifunction Discs, DVDs, or CDs), etc. Computer-readable media may include non-transitory storage media. The data processor may be of any type suitable to the local technical environment, such as, but not limited to, general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and processors based on multi-core processor architectures.

Claims

1. A signal transmission method, applied to a first communication node, the method comprising: 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; 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, where R and P are integers greater than 1.

2. The method according to claim 1, wherein, The transmission resources include transmission subbands, and the set of transmission resources is used by the second communication node to transmit a second signal on the transmission subbands in the set of transmission resources; or... The transmission resources include spreading codes, and the transmission resource set is used by the second communication node to spread the data of the second signal using the spreading codes in the transmission resource set, and then transmit the expanded second signal; or, The transmission resources include the transmission subbands and the spreading code. The transmission resource set is used by the second communication node to extend the data of the second signal using the spreading code in the transmission resource set, and to send the extended second signal on the corresponding transmission subband.

3. The method according to claim 1, wherein, The transmission resources include transmission subbands, and the bandwidth of the transmission subbands includes the bandwidth of the second signal and the frequency domain guard interval; The frequency domain guard interval is determined based on 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.

4. The method according to claim 1, wherein, The transmission resources include transmission subbands; The method further includes: The number of transmission subbands is determined based on the total bandwidth and the bandwidth of the transmission subbands; or, The number of transmission subbands is determined based on the total bandwidth and the bandwidth of the second signal.

5. The method according to claim 1, wherein, 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. The second communication node associated with each ID sends the second signal based on the transmission resource corresponding to each ID.

6. The method according to claim 5, wherein, 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, wherein, In response to determining that 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 the time interval between the first signal and the second signal.

8. The method according to claim 7, wherein, In response to the determination that 1≤i≤P, the transmission resource index corresponding to the i-th ID is i-1; In response to determining that 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, wherein, The time interval between the second signal corresponding to the first ID from the first to the Pth ID and the first signal is less than the time interval between the second signal corresponding to the (P+1)th ID and the first signal.

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

11. The method according to claim 10, wherein, 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 length of the extended code.

12. The method according to claim 5, further comprising: 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 the 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, wherein, 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, wherein, The time interval between the second signals corresponding to the R IDs and the first signal is a predefined first time interval; The time interval between the second signals corresponding to the H IDs and the first trigger instruction is a predefined second time interval.

15. The method according to claim 12, wherein, The data volume of the first trigger instruction is less than the data volume of the first signal.

16. The method according to claim 1, wherein, In response to determining that R is greater than P, the method further comprises: 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 the 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 the 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, wherein, 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, In response to determining that 1 ≤ i ≤ P, the transmission resource index corresponding to the i-th ID among the R IDs is i - 1, and in response to determining that 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, wherein, The time interval between the second signals 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 signals corresponding to the (k×P + 1)-th to the min((k + 1)P, R)-th IDs and the second trigger instruction transmitted at the k-th time is a predefined second time interval.

19. The method according to claim 1, wherein, 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 the 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, wherein the P bits of the bitmap sequence correspond one-to-one with the P transmission resources in 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 transmission method applied to a second communication node, the method comprising: 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; Receive a first signal; wherein the first signal includes R identification codes ID, where R and P are integers greater than 1; A transmission resource is determined within the set of transmission resources, and a second signal is sent based on the determined transmission resource.

22. The method according to claim 21, wherein, 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 set of transmission resources includes: The transmission resource with 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; or, The transmission resource with index Py within 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, wherein, In response to determining that 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 RP 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; Determining a transmission resource within the set of transmission resources includes: In response to determining that 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; In response to determining that 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, wherein, Determining a transmission resource within the set of transmission resources includes: In response to determining that the ID of the second communication node is not included among the R IDs, after receiving the first signal, the first trigger instruction is received, the first trigger instruction including at least one of the H IDs and transmission resource indication information; In response to determining that 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.

25. The method according to claim 21, wherein, The ID of the second communication node is the y-th ID among the R IDs, 1 ≤ y ≤ R and y is an integer, and in response to determining that R is greater than P, determining a transmission resource within the transmission resource set includes: 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, In response to determining that 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 in response to determining that P < y ≤ R, determine the transmission resource for the second communication node to send the second signal according to the transmission resource indication information.

26. The method of claim 25, wherein, Sending the second signal based on the determined transmission resource includes: In response to determining that y is greater than P, in receiving After the second trigger instruction, send the second signal based on the determined transmission resource.

27. The method according to claim 21, wherein, Determining a transmission resource within the transmission resource set includes: 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.

28. A communication node, comprising: Processor; The processor is configured to implement the signal sending method according to any one of claims 1 to 20 or 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, where the computer program, when executed by a processor, implements the signal sending method according to any one of claims 1 to 20 or the signal sending method according to any one of claims 21 to 27.

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