Communication method, communication device, storage medium, and program product

Abstract

The embodiment of the disclosure provides a communication method, a communication device, a storage medium and a program product, relating to the technical field of communication, and can solve the technical problem that the hopping manner makes the signal receiving performance low in the related art. The method is applied to a first node, and the method comprises: determining a multi-level structure corresponding to a frequency domain resource of a signal, wherein the multi-level structure comprises B levels; wherein one subband of level b-1 comprises N b subbands of level b, wherein b=1,...,B-1, B is a positive integer greater than or equal to 2; N b is a positive integer greater than or equal to 1; determining a time domain variation rule of a subband index of each level in the B levels; and transmitting the signal in a frequency hopping manner according to the time domain variation rule.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a communication method, communication device, storage medium, and program product. Background Technology

[0002] In the future, with the increase in the number of antennas and the number of Transmit Receive Points (TRPs) in coordinated transmission, the impact of the Sounding Reference Signal (SRS) channel estimation performance on system performance will become more prominent. On the one hand, uplink channel estimation can be obtained based on SRS, which is then used by the base station to notify the terminal of uplink transmission precoding. If the SRS channel estimation result is inaccurate, it will significantly affect the accuracy of uplink precoding and greatly reduce uplink antenna gain. On the other hand, based on the uplink channel estimation result obtained from SRS, and according to the reciprocity of uplink and downlink channels, the downlink channel estimation result is obtained, which is then used for downlink precoding. If the SRS channel estimation result is inaccurate, it will severely affect the accuracy of downlink precoding, thus reducing downlink antenna gain. Therefore, the importance of SRS in the system will become more prominent in the future, and SRS will become a core factor affecting system performance. Therefore, it is necessary to consider how to improve the measurement performance of SRS.

[0003] Currently, existing SRS can be transmitted using frequency hopping, but the frequency hopping rules of existing SRS are inflexible and cannot meet the requirements of a reliable communication method that can guarantee high SRS measurement performance. Given limitations such as transmitter power constraints or limited scheduling resources, other signals can also be transmitted using frequency hopping. Therefore, a more flexible frequency hopping method that facilitates the receiver's acquisition of signal-related information is needed. Summary of the Invention

[0004] This disclosure provides a communication method, communication device, storage medium, and program product, which can solve the technical problem that the switching method in the related art results in low signal reception performance.

[0005] On one hand, a communication method is provided, applied to a first node, the method comprising: determining a multi-level structure corresponding to the frequency domain resources of a signal, wherein the multi-level structure includes B levels; wherein a sub-band of level b-1 includes N levels of level b. b N sub-bands, where b = 1, ..., B-1; B is a positive integer greater than or equal to 2, and N... b A positive integer greater than or equal to 1; determine the time-domain variation rules for the sub-band index of each of the B levels; transmit signals in a frequency-hopping manner according to the time-domain variation rules.

[0006] On the other hand, a communication device is provided, comprising a determining module and a transmitting module;

[0007] The determination module is used to determine the multi-level structure corresponding to the frequency domain resources of the signal, wherein the multi-level structure includes B levels; wherein a sub-band of level b-1 includes N levels of level b. b N sub-bands, where b = 1, ..., B-1; B is a positive integer greater than or equal to 2, and N... b It is a positive integer greater than or equal to 1; the determination module is also used to determine the time-domain variation rules of the sub-band index of each of the B levels; the transmission module is used to transmit signals in a frequency-hopping manner according to the time-domain variation rules.

[0008] On the other hand, a communication method is provided for application to a second node, the method including:

[0009] Determine the multi-level structure corresponding to the frequency domain resources of the signal, wherein the multi-level structure includes B levels; wherein a sub-band of level b-1 includes N levels of level b. b N sub-bands, where b = 1, ..., B-1; B is a positive integer greater than or equal to 2; b It is a positive integer greater than or equal to 1;

[0010] Determine the time-domain variation rules of the sub-band index for each of the B levels;

[0011] The signal is received from the first node according to the time-domain variation rule. The signal is sent by the first node in a frequency-hopping manner according to the time-domain variation rule.

[0012] On the other hand, a communication device is provided, including a determining module and a receiving module;

[0013] The determination module is used to determine the multi-level structure corresponding to the frequency domain resources of the signal, wherein the multi-level structure includes B levels; wherein a sub-band of level b-1 includes N levels of level b. b N sub-bands, where b = 1, ..., B-1; B is a positive integer greater than or equal to 2; b It is a positive integer greater than or equal to 1;

[0014] The determination module is also used to determine the time-domain variation rules of the sub-band indexes for each of the B levels;

[0015] The receiving module is used to receive signals from the first node according to the time-domain variation rules. The signals are signals sent by the first node in a frequency-hopping manner according to the time-domain variation rules.

[0016] In another aspect, a communication device is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is used to store a computer program; and the processor, when executing the computer program, implements the method described in any of the above embodiments.

[0017] In another aspect, a computer-readable storage medium is provided, on which computer program instructions are stored, which, when executed by a processor, implement the method described in any of the above embodiments.

[0018] In another aspect, a computer program product is provided, the computer program product including computer program instructions that, when executed by a processor, implement the method described in any of the above embodiments.

[0019] This disclosure provides a communication method in which the time-domain variation rules of sub-band indices at each level reflect the hopping rules of frequency domain resources used for signal transmission during frequency hopping. Based on these rules, it is possible to ensure that reference signals are transmitted according to the desired frequency hopping pattern, thereby improving the performance of the receiver receiving signals or improving the receiver's signal acquisition performance. For example, the time-domain variation rules of sub-band indices include a first-level sub-band index variation duration that is shorter than that of the second-level sub-band index, where the first-level value is greater than the second-level value. Both the first and second-level sub-band indices change over time, and / or the variation step size of the sub-band index is reduced. This can achieve priority hopping within a small frequency domain range. A second-level set can also be introduced, where the smaller the level in the second-level set, the smaller the variation duration of the sub-band index, thus accommodating rapid hopping across a large frequency domain range. In this way, the channel characteristics of closely spaced sub-bands can be continuously detected, enabling access network nodes or base stations to quickly obtain frequency domain variation characteristics and to quickly select preferred frequency domain resources within a large frequency domain range. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This disclosure provides a system architecture diagram of a communication system.

[0022] Figure 2 A flowchart illustrating a communication method provided in this disclosure;

[0023] Figure 3 A flowchart illustrating another communication method provided in this disclosure;

[0024] Figure 4 A schematic diagram of the time-domain jump of a sub-band index with a multi-level structure provided in this disclosure;

[0025] Figure 5This is a schematic diagram illustrating the variation of channel frequency domain characteristics provided in this disclosure;

[0026] Figure 6 A schematic diagram of the time-domain jump of a sub-band index in another multi-level structure provided in this disclosure;

[0027] Figure 7 A schematic diagram of the time-domain jump of a sub-band index in another multi-level structure provided in this disclosure;

[0028] Figure 8 A schematic diagram of the time-domain jump of a sub-band index in another multi-level structure provided in this disclosure;

[0029] Figure 9 A schematic diagram of the time-domain jump of a sub-band index in another multi-level structure provided in this disclosure;

[0030] Figure 10 This is a schematic diagram of the structure of a communication device provided in this disclosure;

[0031] Figure 11 A schematic diagram of another communication device provided in this disclosure;

[0032] Figure 12 A schematic diagram of another communication device provided in this disclosure. Detailed Implementation

[0033] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0034] It should be noted that, in this disclosure, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0035] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0036] In the description of this disclosure, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "more than one" means two or more.

[0037] In the future, with the increase in the number of antennas and the number of transceiver points for joint coordinated transmission, the impact of the channel estimation performance of the sounding reference signal (SRS) on system performance will become more prominent. This is because, on the one hand, uplink channel estimation can be obtained based on the SRS, which the base station then uses to notify the terminal of uplink transmission precoding. If the SRS channel estimation result is inaccurate, it will significantly affect the accuracy of uplink precoding and greatly reduce uplink antenna gain. On the other hand, based on the uplink channel estimation result obtained from the SRS, and according to the reciprocity of uplink and downlink channels, downlink channel estimation result is obtained, which in turn leads to downlink precoding. If the SRS channel estimation result is inaccurate, it will severely affect the accuracy of downlink precoding, thus reducing downlink antenna gain. Therefore, the importance of the SRS in the system will become more prominent in the future, and the SRS will become a core element affecting system performance. Therefore, it is necessary to consider how to improve the measurement performance of the SRS. The existing SRS hopping method results in low channel performance obtained by the base station based on the SRS. Given limitations such as limited transmitter power or scheduling resources, other signals can also be transmitted using frequency hopping. Therefore, a more flexible frequency hopping method that facilitates the receiver's acquisition of signal-related information is needed.

[0038] To address the aforementioned technical problems, this disclosure provides a communication method in which the time-domain variation rules of each level of sub-band index reflect the hopping rules of frequency domain resources used for signal transmission during frequency hopping. Based on these rules, it is possible to ensure that reference signals are transmitted according to the desired frequency hopping pattern, thereby improving the performance of the receiver receiving the signal or improving the receiver's signal acquisition performance. For example, the time-domain variation rules of the sub-band index include a first-level sub-band index variation duration that is shorter than that of the second-level sub-band index, where the first-level value is greater than the second-level value. Both the first and second-level sub-band indices change over time, and / or the variation step size of the sub-band index is reduced. This allows for priority hopping within a small frequency domain. A second-level set can also be introduced, where smaller levels correspond to smaller sub-band index variation durations, thus accommodating rapid hopping across a wide frequency domain. In this way, continuous detection of channel characteristics of closely spaced sub-bands can be achieved, enabling access network nodes or base stations to quickly acquire frequency domain variation characteristics and to rapidly select preferred frequency domain resources within a large frequency domain.

[0039] For example, the communication method provided in this disclosure can be applied to systems including, but not limited to, long-term evolution (LTE) systems, various versions based on LTE evolution, 5th generation mobile communication technology (5G) systems, future mobile communication networks (such as 6G mobile communication networks), or multiple converged communication systems. Furthermore, the communication method provided in this disclosure can also be applied to future-oriented communication systems.

[0040] For example, the above communication method can be applied to, for example, Figure 1 In the aforementioned communication system, such as Figure 1 As shown, the communication system includes: a first node 101 and a second node 102.

[0041] The first node 101 is used to determine the multi-level structure corresponding to the frequency domain resources of the signal. The multi-level structure includes B levels; a sub-band of level b-1 includes N levels of level b. b N sub-bands, where b = 1, ..., B-1; B is a positive integer greater than or equal to 2; b It can be a positive integer greater than or equal to 1; or, it can be used to determine the time-domain variation rule for the sub-band index of each of the B levels; or, it can be used to transmit signals in a frequency-hopping manner according to the time-domain variation rule.

[0042] The second node 102 is used to determine the multi-level structure corresponding to the frequency domain resources of the signal, wherein the multi-level structure includes B levels; wherein a sub-band of level b-1 includes N levels of level b. b N sub-bands, where b = 1, ..., B-1; B is a positive integer greater than or equal to 2; b It is a positive integer greater than or equal to 1; or, it is used to determine the time-domain variation rule of the sub-band index of each of the B levels; or, it is used to receive the signal from the first node according to the time-domain variation rule, the signal being the signal sent by the first node in a frequency-hopping manner according to the time-domain variation rule.

[0043] When the signal is a downlink signal, the first node 101 is a base station and the second node 102 is a terminal. When the signal is an uplink signal, the first node 101 is a terminal and the second node 102 is a base station. Alternatively, when the signal is transmitted between two terminals, the first node 101 is the terminal 1 that sends the signal and the second node 102 is the terminal 2 that receives the signal.

[0044] In some embodiments, the terminal can be a device with wireless transceiver capabilities, which can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as on ships); and it can also be deployed in the air (e.g., on airplanes, balloons, and satellites). The terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, virtual reality (VR) terminal, augmented reality (AR) terminal, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical care, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. The embodiments of this application do not limit the application scenarios. The term "terminal" can sometimes also refer to a user, user equipment (UE), access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication device, UE agent, or UE device, etc., but the embodiments of this application do not limit this to these terms.

[0045] In some embodiments, the base station may be a base station in Long Term Evolution (LTE), Long Term Evolution Advanced (LTEA), or an evolved Node B (eNB or eNodeB), a base station device in a 5G network, or a base station in a future communication system. The base station may include various macro base stations, micro base stations, femtocell base stations, wireless remote extensions, reconfigurable intelligent surfaces (RISs), routers, wireless fidelity (WIFI) devices, or various network-side devices such as primary cells and secondary cells.

[0046] It should be noted that, Figure 1 This is just an example framework diagram. Figure 1 The number of devices included and the names of each device are unlimited.

[0047] The application scenarios of the embodiments disclosed herein are not limited. The system architecture and business scenarios described in the embodiments of this disclosure are for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of this disclosure. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this disclosure are also applicable to similar technical problems.

[0048] The communication method provided in the embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0049] The communication method provided in this disclosure can be applied to... Figure 1 The first node 101 in the communication system shown. Figure 2 A flowchart of a communication method is shown, such as... Figure 2 As shown, the communication method includes the following S201-S203:

[0050] S201. Determine the multi-level structure corresponding to the frequency domain resources of the signal.

[0051] The multi-level structure includes B levels; one sub-band of level b-1 includes N levels of level b. b N sub-bands, where b = 1, ..., B-1; B is a positive integer greater than or equal to 2; b It is a positive integer greater than or equal to 1.

[0052] S202. Determine the time-domain variation rules for the sub-band index of each of the B levels.

[0053] S203. Transmit signals in a frequency-hopping manner according to the time-domain variation rules.

[0054] It should be noted that the time-domain variation rules of each level of sub-band index reflect the hopping rules of frequency domain resources used for signal transmission during frequency hopping. Based on these rules, it is possible to ensure that the reference signal is transmitted according to the desired frequency hopping pattern, thereby improving the performance of the receiver's signal reception or the receiver's acquisition performance. For example, the time-domain variation rules of the sub-band index include: the variation duration of the first-level sub-band index is less than that of the second-level sub-band index, where the level value of the first level is greater than that of the second level; both the first and second-level sub-band indices change over time; and / or the variation step size of the sub-band index is reduced. This can achieve priority hopping within a small frequency domain range. A second-level set can also be introduced, where the smaller the level in the second-level set, the smaller the variation duration of the sub-band index, thus accommodating rapid hopping over a large frequency domain range. In this way, the channel characteristics of closely spaced sub-bands can be continuously detected, enabling access network nodes or base stations to quickly obtain frequency domain variation characteristics and quickly select preferred frequency domain resources within a large frequency domain range.

[0055] In one embodiment, transmitting signals in a frequency-hopping manner according to time-domain variation rules includes transmitting signals to a second node in a frequency-hopping manner according to time-domain variation rules.

[0056] In one embodiment, when the signal includes a reference signal, the signal includes one or more reference signal ports (i.e., a set of reference signal ports), or when multiple ports are transmitted on resources determined according to the sub-band index hopping rule in a frequency domain transmission opportunity, the signal in S203 is the signal on any one of the multiple ports.

[0057] In some embodiments, the B levels include at least a first level and a second level, and the time-domain change rules include: both the sub-band index of the first level and the sub-band index of the second level change with time, the change duration of the sub-band index of the first level is less than the change duration of the sub-band index of the second level, wherein the frequency domain length of a sub-band of the first level is less than or equal to the frequency domain length of a sub-band of the second level, and / or the level value b of the first level is greater than the level value b of the second level.

[0058] In some embodiments, both the first level and the second level belong to the first level set, the first level set includes at least two levels, and the time-domain variation rules include at least one of the following:

[0059] In the first-level set, the larger the sub-band level b, the higher the priority of the sub-band index of sub-band level b during time-domain transitions; the larger the sub-band level b, the shorter the time-domain transition duration of the sub-band index of sub-band level b. It should be noted that a larger sub-band level b, with higher priority or shorter time-domain transition duration for the sub-band index of sub-band level b during time-domain transitions, allows for faster acquisition of the channel characteristics of sub-bands at a finer granular resource level, enabling adaptation to communication in rapidly changing channel environments. In this description, a shorter time-domain transition duration for the sub-band index means a smaller number of consecutive frequency-domain transmission opportunities for the signal within the time during which the sub-band index remains unchanged.

[0060] In some embodiments, the multi-level structure includes one or more third levels, and the time-domain variation rule includes: for each third level, the time-domain transition step size of the sub-band index of the third level includes a first step size, which is less than or equal to half the number of sub-band indices included in the sub-band index set.

[0061] In some embodiments, the subband index set satisfies at least one of the following:

[0062] The sub-band index set includes sub-band indices;

[0063] The sub-band index set corresponds to the same third level in one or more third levels;

[0064] Each of the multiple third levels corresponds to its own set of sub-band indexes, first step length, and sub-band index;

[0065] Each subband index in the subband index set corresponds to a subband with the same length.

[0066] In some embodiments, for each set of sub-band indices corresponding to one or more third levels, at least one of the following is also satisfied:

[0067] Each subband index in the subband index set corresponds to one or more subbands in the third level; when each subband index corresponds to multiple subbands, the signal transmitted by the first node in a frequency domain transmission timing corresponds to only one of the multiple subbands.

[0068] The subband index set includes all the different subband indexes at the third level;

[0069] The subband index is the index of a third subband in the third subband set corresponding to the subband index, where a fourth subband at the fourth subband level includes all subbands in the third subband set.

[0070] It should be noted that the first level and the third level can be the same or different levels.

[0071] In some embodiments, the time-domain transition rule of the subband index is determined according to the following formula: a b *(n SRS,b, 3modZ b ), where a b Let n be the length of the first step. SRS,b,3 Z is a counter related to the frequency domain transmission timing of the signal. b It is a positive integer less than or equal to the number.

[0072] In some embodiments, the time-domain transition rule of the subband index further includes at least one of the following:

[0073] The jump step size of the subband index also includes a second step size, where the second step size is greater than or equal to half the number;

[0074] The step size of the subband index also includes a third step size, which is larger than the second step size;

[0075] The step size of the subband index also includes a second step size, which is larger than the first step size.

[0076] In some embodiments, when there is a subband index jump on multiple consecutive time-domain symbols, the jump step size includes the first step size;

[0077] When the subband index jumps on discontinuous time-domain symbols, the jump step size of the subband index includes the second step size and the third step size.

[0078] When the subband index jumps with the first step length, the jump duration is the first duration; when the subband index jumps with the second step length, the jump duration is the second duration, where the first duration is less than the second duration.

[0079] When the subband index jumps with the second step size, the jump duration is the second duration; when the subband index jumps with the third step size, the jump duration is the third duration, where the second duration is less than the third duration.

[0080] In some embodiments, the hopping rule of the subband index is determined according to at least one of the following formulas:

[0081]

[0082] (a b *(n SRS,b,3 modZ b )+W b *n SRS,b,4 )modV b ;

[0083]

[0084] Where, f(n) SRS)=(n SRS modQ b,3 ) or f(n SRS ) = n SRS ,a b Let n be a positive integer of length greater than or equal to 1 in the first step. SRS,b,3 A counter related to the frequency domain transmission timing of the signal, V b Z b Let Q be a positive integer less than or equal to the number of digits, where Q is a positive integer less than or equal to the number b,2 Q b,3 Q b,4 All are positive integers greater than or equal to 1, W b >a b W b Indicates the second step size or W b =a b W b Indicates the second step size, n SRS Another counter that represents the frequency domain transmission timing of a signal, in n SRS During the time period that remains unchanged, n SRS,b,3 n remains unchanged SRS =n SRS,b,3 , or changed once or multiple times, and / or n SRS According to n SRS,b,3 Obtain; n SRS,b,4 It is another counter related to the frequency domain transmission timing of the signal.

[0085] For example, Q b,2 It is Q b,1 multiples of Q b,4 It is Q b,2 Integer multiples of.

[0086] In some embodiments, the jump step size of a subband index is less than or equal to half the number of subband indices included in the subband index set, satisfying at least one of the following:

[0087] When the number is equal to 2, the first step length of the sub-band index is equal to half the number;

[0088] When the number is greater than 2, the first step length of the subband index is less than half the number;

[0089] The first step length of the subband index is determined by the quotient between the number and the first parameter, where the value of the first parameter is greater than 2, and the first parameter is either a conventional value or a value determined based on the received signaling information.

[0090] In some embodiments, it is characterized by at least one of the following:

[0091] In two consecutive frequency domain transmissions of the signal, the step size of the subband index transition is the first step size;

[0092] In two consecutive frequency domain transmissions of the signal, the step size of the subband index transition is less than or equal to half the number of subband indices included in the subband index set.

[0093] In two consecutive transitions of the subband index, the transition step size of the subband index is less than or equal to half the number of subband indices included in the subband index set, wherein the time during which the subband index remains unchanged includes one or more frequency domain transmission opportunities of the signal.

[0094] In some embodiments, the multiple levels in the multi-level structure include levels in a second set of levels, and the rules for time-domain variation include at least one of the following:

[0095] The temporal jump duration of the sub-band index of the level in the first-level set is less than the temporal jump duration of the sub-band index of the level in the second-level set;

[0096] During the frequency hopping process of the signal, the subband index of the level in the first level set is traversed once at different times, and then the subband index of the level in the second level set jumps once.

[0097] The time-domain jump step size of the first-level subband index in the first-level set includes the first step size, and the time-domain jump step size of the second-level subband index in the second-level set includes the second step size. The first step size is less than half the number of subband indices included in the subband index set corresponding to the first level, and the second step size is greater than or equal to half the number of subband indices included in the subband index set corresponding to the second level.

[0098] When the first-level set includes multiple levels, the larger the level in the first-level set, the shorter the time for the sub-band index to jump.

[0099] When the first-level set includes multiple levels, the smaller the level in the first-level set, the shorter the time for the sub-band index to jump.

[0100] When the second-level set includes multiple levels, the smaller the level in the second-level set, the shorter the time it takes for the sub-band index of the level to jump.

[0101] In some embodiments, the first-level set or the second-level set satisfies at least one of the following:

[0102] The first level set includes the highest level in the second level set;

[0103] Each level in the first level set is greater than the highest level in the second level set;

[0104] Each level in the first level set is greater than or equal to the highest level in the second level set;

[0105] The first-level set and the second-level set include one or more of the same levels;

[0106] The first-level set and the second-level set include different levels;

[0107] The first level set includes the largest one or more levels in the multi-level set;

[0108] The second-level set includes sub-bands of all levels in the multi-level set;

[0109] Each level in the second-level set is less than the largest level in the first-level set and is greater than or equal to a predetermined value.

[0110] In some embodiments, the multi-level structure also includes levels in a third-level set, which do not belong to the first-level set or the second-level set; wherein the sub-band index of the levels in the third-level set does not change during frequency hopping.

[0111] In some embodiments, where the first-level set includes only the largest level B-1 in the multi-level structure, the sub-band index n of the largest level B-1 is... b Determine based on at least one of the following formulas:

[0112] (F b,1 (n SRS,1 )+k)modN b ;

[0113] (F b,1 (n SRS,1 )+F b,2 (n SRS )+k)modN b ;

[0114] F b,1 (n SRS,1 )modN b ;

[0115] Where n SRS,1 A counter related to the frequency domain transmission timing of the signal, n SRS Another counter related to the frequency domain transmission timing of the signal, where in n SRS During a period of time when n remains unchanged, SRS,1 n remains unchanged SRS =n SRS,1 , or n SRS,1 It changed once or multiple times, and / or n SRS According to n SRS,1Confirmed; F b,1 (n SRS,1 ) is n SRS,1 The function, F b,2 (n SRS ) is n SRS The function; k is a positive integer greater than or equal to 0, k is a fixed value or determined according to the signaling information received from the second node, B-1 is B SRS Or, level B-1 is a virtual level B. SRS +1, then N b =P F Level B SRS A subband in +1 is a partial PRB set. B SRS It is determined based on the received signaling information.

[0116] In some embodiments, F b,1 (n SRS,1 ( ) satisfies at least one of the following;

[0117] F b,1 (n SRS,1 ) = a b,1 *(n SRS,1 modZ b );

[0118]

[0119]

[0120] Z b Greater than or equal to Q, or Z b Less than or equal to N b , z b,1 c is a positive integer greater than or equal to 2. b It is 1 or 0; a b,1 For less than or equal to N b A positive integer; or a b,1 =N b / z b,1 Q is a positive integer greater than or equal to 1, and / or Q is the number of consecutive transitions of the subband index in level B-1, where consecutive transitions occur during consecutive frequency domain transmission opportunities of the reference signal; b max,A1 =B-2,b min,A1 =b max,A1 .

[0121] In some embodiments, F b,2 (n SRS ( ) satisfies at least one of the following:

[0122]

[0123] Where Q is a positive integer greater than or equal to 1, and S / Q is less than or equal to Z. b positive integers, z b Greater than or equal to 1.

[0124] In some embodiments, subband index n b It must satisfy at least one of the following characteristics:

[0125]

[0126] Among them, F b,2 (n SRS ) and F b,4 (n SRS,1 ) are respectively n SRS ,n SRS,1 The function.

[0127] In some embodiments, F b,2 (n SRS ( ) satisfies at least one of the following:

[0128]

[0129]

[0130] in or f(n) SRS ) = n SRS Conditions one and two are based on V b W b Confirmed, V b Less than or equal to N b a b c is a positive integer greater than or equal to 1. b It is 1 or 1; z b b is a positive integer greater than or equal to 1; min,A2 =b hop W b For less than N b positive integers; e b A positive integer greater than or equal to 1. z b e is a fixed value or a value determined based on received signaling information. b A fixed value or a value determined based on received signaling information.

[0131] In some embodiments, the signal includes at least one of the following: an uplink sounding reference signal, an uplink data channel signal, an uplink control channel signal, an uplink demodulation reference signal, an uplink random access signal, a downlink measurement reference signal, and a downlink demodulation reference signal; and / or,

[0132] In a multi-level structure, each level corresponds to a frequency domain sub-band size occupied by the signal; and / or,

[0133] In a multi-level structure, the smaller the level b, the longer the length of a frequency domain subband at that level.

[0134] In some embodiments, the method further includes:

[0135] Receive a first signaling from the second node. The first signaling includes parameters for determining at least one of the following: relevant information of the first level set, relevant information of the second level set, relevant information of the second level set, a first parameter, a first step length, a second step length, a third step length, and selection information for the transition rule.

[0136] In some embodiments, the method further includes:

[0137] n is determined based on at least one of the following SRS,b,3 The index l′ of the time-domain symbol containing the signal among multiple consecutive time-domain symbols including the signal, the number s of the time-division port groups corresponding to the signal, the number R of time-domain symbols included in a single frequency-domain transmission of the signal, and the number of time slots included in a frame. Frame number n f The time slot index where the signal is located Signal period offset T offset The number of frequency domain transmission opportunities Q of the signal included within the opportunity when the subband index remains unchanged. b,1 The period T of the signal RS The number of consecutive time-domain symbols of a signal within one period. Where different b corresponds to n SRS,b,3 They can be the same or different.

[0138] In some embodiments, n SRS,1 ,n SRS ,n SRS,b,3 At least one of them is determined according to at least one of the following:

[0139]

[0140]

[0141] in, or

[0142] Where Q, Q b,1 It is a positive integer greater than or equal to 1.

[0143] In some embodiments, n SRS,b,3 At least one of the following must be satisfied:

[0144]

[0145] in, or

[0146] Where Q, Q b,1 It is a positive integer greater than or equal to 1.

[0147] In some embodiments, n SRS At least one of the following must be satisfied:

[0148]

[0149] in, or

[0150] Where Q, Q b,1 It is a positive integer greater than or equal to 1.

[0151] In some embodiments, frequency hopping transmission of signals according to time-domain variation rules includes:

[0152] Based on time-domain variation rules, the number of physical resource blocks m included in a sub-band of each of the B levels. SRS,b The number of subcarriers included in a physical resource block And the highest level B-1 in each level, determines the set of physical resource blocks occupied by the signal in each frequency domain transmission opportunity;

[0153] Send a signal within a defined set of physical resource blocks;

[0154] One of the frequency domain transmission opportunities includes one or more time domain symbols. In the case of multiple time domain symbols, the signal occupies the same set of physical resource blocks across the multiple time domain symbols.

[0155] In some embodiments, according to Determine the set of physical resource blocks occupied by the signal in each frequency domain transmission opportunity, where: in, The first offset is the offset of the signal's frequency domain position relative to the starting frequency domain position of a sub-band at the lowest level (b=0) in the multi-level structure, where n is the first offset. b This is the subband index of a subband of level b.

[0156] The communication method provided in this disclosure can be applied to... Figure 1 The second node 102 in the communication system shown. Figure 3 A flowchart of a communication method is shown, such as... Figure 3 As shown, the communication method includes the following S301-S303:

[0157] S301. Determine the multi-level structure corresponding to the frequency domain resources of the signal.

[0158] The multi-level structure includes B levels; one sub-band of level b-1 includes N levels of level b. b N sub-bands, where b = 1, ..., B-1; B is a positive integer greater than or equal to 2; b It is a positive integer greater than or equal to 1.

[0159] S302. Determine the time-domain variation rules for the sub-band index of each of the B levels.

[0160] S303, Receive signals from the first node according to the time-domain variation rules.

[0161] The signal is transmitted by the first node in a frequency-hopping manner according to the time-domain variation rules.

[0162] In some embodiments, the B levels include at least a first level and a second level, and the time-domain change rules include: both the sub-band index of the first level and the sub-band index of the second level change with time, the change duration of the sub-band index of the first level is less than the change duration of the sub-band index of the second level, wherein the frequency domain length of a sub-band of the first level is less than or equal to the frequency domain length of a sub-band of the second level, and / or the level value b of the first level is greater than the level value b of the second level.

[0163] In some embodiments, the multi-level structure includes one or more third levels, and the time-domain variation rule includes: for each third level, the time-domain transition step size of the sub-band index of the third level includes a first step size, which is less than or equal to half the number of sub-band indices included in the sub-band index set. It should be noted that the third level and the first level can be the same or different.

[0164] In some embodiments, the signal includes at least one of the following: an uplink sounding reference signal, an uplink data channel signal, an uplink control channel signal, an uplink demodulation reference signal, an uplink random access signal, a downlink measurement reference signal, and a downlink demodulation reference signal; and / or,

[0165] In a multi-level structure, each level corresponds to a frequency domain sub-band size occupied by the signal; and / or,

[0166] In a multi-level structure, the smaller the level b, the longer the length of a frequency domain subband at that level.

[0167] In some embodiments, the method further includes: sending a first signaling to a first node, the first signaling including parameters for determining at least one of the following: relevant information of a first-level set, relevant information of a second-level set, relevant information of a second-level set, a first parameter, a first step length, a second step length, a third step length, and selection information of a transition rule.

[0168] It should be noted that it is applied to Figure 1 The explanation of an embodiment of the communication method of the second node 102 in the communication system shown can be referred to the application of Figure 1 Explanation of an embodiment of the communication method of the first node 101 in the communication system shown.

[0169] Furthermore, the other operations and transition rules of the first node mentioned above have corresponding operations at the second node. For example, when the first node receives signaling from the second node, the second node correspondingly performs the operation of sending signaling to the first node. Another example is that the operation of determining parameters based on received signaling information is changed to determining the information included in the signaling information based on the parameters, and then sending the signaling information, where the signaling information includes the operation used by the first node to determine the parameters.

[0170] In some embodiments, the parameters determined based on signaling information mentioned herein are such that if two parameters are unrelated, the signaling information associated with these two parameters is different signaling information; if two parameters are related, the signaling information associated with these two parameters is different signaling information, or different signaling information.

[0171] The following is an exemplary description of the communication method provided in the embodiments of this disclosure:

[0172] It should be noted that in traditional technologies, to improve SRS reception performance, terminals use frequency hopping to transmit SRS. The terminal transmits a small-bandwidth SRS at one time and SRS at different frequency positions at different times. By transmitting SRS at multiple times, the base station can obtain uplink channel estimation results over a large bandwidth. Considering the limited transmission power of the terminal, this can improve the channel estimation accuracy obtained by the base station based on SRS in each small bandwidth. However, a significant characteristic of existing SRS frequency hopping methods is that the hopping bandwidth and hopping interval (i.e., hopping step size) of adjacent (i.e., consecutive) frequency domain transmission opportunities are very large, exceeding the frequency domain coherence bandwidth of the channel. This prevents the base station from quickly obtaining the frequency domain characteristics of the channel. A single frequency domain transmission opportunity includes one or more consecutive time-domain symbols containing SRS. In multiple time-domain symbols of a single frequency domain transmission opportunity, the SRS occupies the same set of RPBs, while in two adjacent frequency domain transmission opportunities, the SRS occupies different sets of RPBs. The term "continuous time-domain symbols" here refers to the continuity of time-domain symbols including the SRS. The actual time-domain symbols can be continuous or discontinuous. For example, a frequency domain transmission might include {time-domain symbol 2, time-domain symbol 3} in a slot, which is actually continuous. Or, a frequency domain transmission might include {time-domain symbol 2, time-domain symbol 4} in a slot, where the SRS is not included in time-domain symbol 3, which is actually discontinuous.

[0173] For example, such as Figure 4 As shown, the bandwidth is divided into multiple subbands of different sizes, forming a multi-level structure (also known as a tree structure). 'b' represents the level, i.e., the size identifier of the subband. Subbands within the same level have the same size. A subband at level 'b' includes N subbands at level 'b+1'. b+1 Subband (also known as N) b-1 (Number of leaves), and N0 = 1. The smaller the level value b, the larger the frequency domain bandwidth corresponding to a sub-band of this level. Figure 4 In the above, for b = 1, 2, 3, N b =2 is just an example and does not exclude N. b For other values, such as N b ∈{1....20}, or other values, if N b =1, then a subband at level b and a subband at level b+1 have the same size, meaning a subband at level b includes only one subband at level b+1, and different b correspond to N b They can also be different. Once the number of b's and N are determined... bThen, a multi-level structure is formed. Due to different application scenario requirements, the sending and receiving ends can specify multiple candidate multi-level structures. These multiple candidate multi-level structures constitute a multi-level structure set, and the base station notifies the terminal to use one of the multiple candidate multi-level structures. For example... Figure 4 As shown, corresponding to each b,n b (i.e., subband index) indicates the number of subbands at level b that include a subband at level b-1. b The index within a sub-band. For example, n1 = 0 corresponds to a sub-band at level b = 1, including two sub-bands at level b = 2, with indices n2 = 0 and n2 = 1. Figure 4 In this process, the terminal transmits SRS on a subband at level b=3 at each time, meaning that the bandwidth occupied by SRS at each time is less than or equal to that of a subband at level b=3. Figure 4 In the b=3 level, the numbers 0, 1, ... 7 in the subband represent the time sequence of the subband where the SRS is located in one frequency hopping cycle (that is, the position of the subband occupied by the SRS in the eight consecutive frequency domain transmission opportunities 0, 1, ..., 7). More precisely, the numbers 0, 1, ... 7 can be replaced with t0, t1, ... t7. That is, in one frequency hopping cycle, the SRS is first transmitted on the subband represented by number 0 at the first moment (i.e., the first frequency domain transmission opportunity), then on the subband represented by number 1 at the second moment (i.e., the second frequency domain transmission opportunity), then on the subband represented by number 2 at the third moment (i.e., the third frequency domain transmission opportunity), and so on. The times of adjacent hopping subbands are consecutive with respect to the frequency domain transmission opportunities that include this SRS. In practice, they can be physically continuous time domain symbols or physically discontinuous time domain symbols. For example, the first time and the second time can be physically continuous time domain symbols or physically discontinuous time domain symbols. The times of adjacent hopping subbands are adjacent with respect to the time domain symbols that include this SRS. Figure 4 The subband jump rule is that, within the jump levels, the subband index at the level with the largest 'b' is fixed first. The smaller the 'b' level, the faster the subband index changes (i.e., the shorter the change time of the subband index). Specifically, Figure 4 In a frequency hopping cycle, n0 = 0 (i.e., the third level set only includes the level b = 0) remains unchanged. First, fix n2 = 0 and n3 = 0, and let n1 change. After n1 has traversed {0, 1... N1-1}, let n2 change. For example, if n2 = 1, and n3 = 0, let n1 change. After n1 has traversed {0, 1... N1-1}, then n2 changes. After n2 has also traversed, then n3 changes. That is, n1 changes the fastest, n2 the next fastest, and n3 changes the last. In this way, it can quickly traverse within the largest possible bandwidth. Figure 4The set of subband index jump levels includes {b=1, b=2, b=3}, and b=0 does not jump. The jump level set indicates that the index of that level corresponding to the subband occupied by SRS will change over time, as shown in Table 1.

[0174] Table 1

[0175]

[0176] Table 1 shows the frequency domain changes of the subbands with b=3 occupied by the SRS at each moment in a frequency hopping cycle, according to the chronological order of the b=3 subband jumps, and the corresponding subband index changes at each level, i.e., the time-domain change characteristics of n0, n1, n2, n3. It can be seen that, except for b=0, in the hopping level set {b=1, b=2, b=3}, the smaller b is, the faster the subband index changes. Alternatively, it can be considered that the subband index at the larger b level is fixed first, and the subband index at the smaller b level jumps first, because the smaller b is, the larger a subband at the b level is, or at least the same size as a subband at the larger b level (as mentioned above in N...). b+1 (In the case where b = 1), this allows the base station to quickly find the optimal bandwidth within a large bandwidth. Alternatively, it can be considered that in the set of transition levels, the smaller b is, the better n... b The shorter the change period, the better. However, in reality, the frequency domain changes of the channel have a certain periodicity or quasi-periodicity, such as... Figure 5 As shown, the channel characteristics of subbands that are far apart do not necessarily change faster than those of subbands that are close together. Moreover, since the frequency domain spacing between adjacent hopping subbands is relatively large, it is not conducive to the base station quickly obtaining the frequency domain change characteristics. Therefore, it is necessary to change the frequency hopping rule of SRS.

[0177] Option 1: In the set of transition levels, the sub-band index of the highest level changes first. Then, among the other values ​​'b' in the set of transition levels, the smaller 'b' is, the faster the sub-band index changes. For example... Figure 6 As shown, the terminal transmits SRS on a subband with b=3 at each time step, and the time-domain transition sequence of its SRS is as follows. Figure 6 As shown in 0, 1, 2, ... Figure 6 The index changes at each level corresponding to the time-domain transition sequence of the neutron band are shown in Table 2. Figure 6 The jump set in the equation is {b=1, b=2, b=3}.

[0178] Table 2

[0179]

[0180] Figure 6In this context, the terminal's hopping bandwidth is a sub-band corresponding to b=0. For example, if the terminal's frequency hopping bandwidth belongs to the sub-band of b=0, after each hopping cycle of the terminal, the base station can obtain the channel estimation result for a sub-band of b=0, i.e., n0=0. At this time, b... hop =0,b hop The value of the base station can be configured, b hop This indicates the frequency domain range of the transition when b ≤ b. hop ,n b The set remains unchanged (i.e., the third-level set is {b, b≤b}). hop For b hop <b≤B SRS level b, n b Change, i.e., b hop <b≤B SRS The set of transition levels can be considered to be formed by b ≤ b hop Fixed index n in b You can find b hop The corresponding index in the level is A frequency domain leaf is defined as the bandwidth range of the terminal's frequency domain transitions (the leaf being a sub-band). The terminal transmits SRS only on a portion of the bandwidth of this leaf at any given time, and the frequency domain bandwidth corresponding to the SRS transmitted at each moment is b = B. sRS One of the leaves, a leaf can also be called a frequency domain subband, where B SRS It can also be configured at the base station level; in the example above, B... SRS =3, of course, the base station can also be B. SRS For other values, B SRS ∈{1,2,3}, or B SRS ∈{0,1,2,3} when N0 is greater than 1. In other scenarios, the base station can also configure the terminal's frequency hopping bandwidth to be b. hop A non-zero subband, i.e., b hop Greater than 1. For example... Figure 7 As shown, the base station configures a hopping bandwidth of b for the terminal. hop =1 index is A fixed leaf, i.e., a transition bandwidth of b. hop =1 The sub-band shown in the shaded area. Figure 7 The index changes at each level corresponding to the time-domain transition sequence of the neutron band are shown in Table 3. Figure 7 The set of transition levels in the equation is {b=2, b=3}.

[0181] Table 3

[0182]

[0183] To achieve this goal, the following subband transition method can be used:

[0184]

[0185] Where, n SRS It is a counter for the number of times each of the Q frequency domain transmission opportunities occurs, for example, for each n... SRS Corresponding to Q consecutive frequency domain transmission opportunities, these Q consecutive frequency domain transmission opportunities are called the frequency domain transmission opportunity set, n. SRS After the change, it means a jump from one set of frequency domain transmission opportunities to another set of frequency domain transmission opportunities, for example... in n is the number of slots included in a frame. f It's the frame number, T offset It is the period offset of SRS, T SRS It is the period of SRS, and the unit is slot. It is the number of time-domain symbols occupied by the SRS in one or more slots within a period. It is the starting slot index of one or more of the above slots, and l′ is the time-domain symbol index occupied by the SRS. Index in each time-domain symbol, Furthermore, The SRS time-domain symbols are consecutive time-domain symbols. R is the number of time-domain symbols in the PRB set whose position remains unchanged. s is the number of time-division SRS port groups in an SRS resource. If all SRS ports are on the same time-domain symbol, then s = 1; if there are two SRS port groups on different time-domain symbols, then s = 2, and so on. Where b hop This indicates the frequency hopping bandwidth configured for the base station, for example... Figure 7 In the middle, b hop =1, meaning the set of subbands with b=3 that transition at different times belongs to a subband with b=1. This represents the frequency domain offset of the starting position of a sub-band with b=3 relative to the starting position of the sub-band with b=0, achieved through... This allows us to determine the location of the sub-band where the SRS is located at b=3. As can be seen from formula (1), the frequency domain location of the sub-band where the SRS is located at b=3 is determined by the sub-band indices of each b in the sub-band, such as... Figure 7 As shown, to find the frequency domain starting position of the shaded area (b=3, number 2) in the figure, we find their indices in each sub-band level by using n0=0, n1=0, n2=1, and n3=0 respectively. Then, we use n0*m SRS,0 =0 (corresponding to) Figure 7 (The position indicated by the red line with number 0 in the image), n1*m SRS,1 =0 (corresponding to) Figure 7 (The position indicated by the red line with number 1 in the image), n2*m SRS,2 =m SRS,2 (correspond Figure 7 (The position indicated by the red line at number 2 in the image), n3*m SRS,3 =0 (corresponding to) Figure 7 (As shown by the red line numbered 3 in the diagram), thus obtaining the frequency domain offset of the starting position of the sub-band shown in the shaded area with b=3 relative to the starting frequency domain position of this multilevel structure. That is, find the starting position indicated by the red line in the diagram one by one, just like the process of finding the leaves from the root of a tree. This indicates the number of subcarriers included in a PRB. SRS,b It represents the number of PRBs included in a subband at level b. (B) SRS It refers to the subband range corresponding to the SRS on a time-domain symbol of the terminal, that is, the frequency domain bandwidth occupied by the SRS transmitted by the terminal on a time-domain symbol is B. SRS At level one leaf, the frequency domain bandwidth occupied by the SRS transmitted by the terminal on one time domain symbol is B. SRS The range shown by a leaf of the level, or the frequency domain bandwidth occupied by the SRS transmitted by the terminal on a time domain symbol of B. SRS A subset of the range shown by a leaf of the level is called partial bandwidth transmission. B SRS ∈{0,1,2,3}, Figure 4 ,3,4 in B SRS =3. As can be seen from formula (3), for level b, n b The index needs to be in Q. b = It will change later, including Q. b This indicates the number of frequency domain transmission opportunities for this SRS during the period when the subband index at level b remains unchanged during a frequency domain transition. Q b Q is a positive integer greater than or equal to 1. b This means that for b SRS The various levels b, n b Keep it unchanged, for example, n in formula (1) b If the level remains unchanged, then level b = B SRS The number of changes can be further limited. Or restrictions in or Where g is a positive integer greater than or equal to 1, the meaning of which will be explained further later. In formula (2), G... b (n SRS,1 ) represents H b is n​SRS,1 The function does not exclude H b There are other values ​​among the parameters to be obtained, such as H. b (n SRS,1 According to at least one of the following formulas, where b = B SRS The following H b (n SRS,1 In the process of obtaining b=B SRS :

[0186] H b (n SRS,1 )=(F b,1 (n SRS,1 )+k)modN b (4-1);

[0187] H b (n SRS,1 )=(F b,1 (n SRS,1 )+F b,2 (n SRS )+k)modN b (4-2);

[0188] H b (n SRS,1 ) = F b,1 (n SRS,1 )modN b (4-3).

[0189] Where k is a positive integer greater than or equal to 0, k is a fixed value, or a value determined according to the signaling information configured by the base station, for example... Formulas (4-3) and (4-1) are more suitable for Q equal to In this case, formula (4-3) differs from formula (4-1) in that it does not require n. RRC Control B SRS The starting subband index at the level, when these two formulas are used for Q less than In the case of B SRS Only the Q sub-items with indices in the level will be skipped; the others... -Q sub-band indices will not be skipped. However, in formulas (4-2) and (4-3), B will first be skipped consecutively. SRS Q sub-bands at the level, then or In this context, the smaller b is, the faster the subband index changes; that is, the smaller b is, the shorter the time-domain change period of the subband index. Where F... b,2 (n SRS ) = F b (n SRS ), or F b2 (n SRS)=H b (n SRS () is the position of the starting sub-band index for obtaining Q consecutive sub-band indices, so that even if Q is less than Through F b,2 (n SRS It can also be achieved All subband indexes, or at least subband indexes that can skip more than Q.

[0190] F b,1 (n SRS,1 ) is the index n SRS,1 The mapping table is shown in Table 4:

[0191] Table 4

[0192]

[0193] The mapping relationships in Table 4 are just an example and do not exclude other mapping table formats. The '-' in Table 4 indicates that such a configuration is not desired.

[0194] F b,1 (n SRS,1 ) can also be n SRS,1 The function, for example, obtained from at least one of the following formulas.

[0195]

[0196] H b (n SRS It can be obtained through one or more of the following formulas:

[0197]

[0198] Where X = Q, or X = N b Furthermore, when formula (4-4) is used, X = N b When one or more of formulas (4-1) to (4-3) are used, X = Q, or X = N. b Y is a positive integer greater than or equal to 1. b ,z b,1 It is a positive integer greater than or equal to 1. For z b ,z b,1 (i.e., the first parameter) is used to control the step size of the sub-band index of level b, when z b ,z b,1 When the value is greater than 2, the jump step size of the subband index at level b is less than or equal to half the number of subbands included in the subband index set, i.e., less than 2. z b For different b, z b If they are the same, then zb The subscript 'b' in z can be omitted. b,1 For different b, z b,1 If they are the same, then z b,1 The subscript 'b' in 'c' can be omitted. b It is a positive integer greater than or equal to 1. If in each b, c b If the values ​​of a and b are the same, then b can be omitted. Where a b,1 This refers to a step size for subband index transitions in level b, when a b,1 Less than N b When the length is 2, it is the first step length; otherwise, it is the second step length.

[0199] Formula (4-2) or (4-3) can achieve level B. SRS The subband index changes first in the first subset, then in the predetermined level set, the smaller b is, the faster the subband index changes. After the subband index of the highest level belonging to the first subset has been changed, or more precisely, using the above method, b... hop Level B included in a sub-band SRS After the subband index in the first subset has completed its hopping, a subband index at level b corresponds to one or more subbands at level b, and then it proceeds to level B. SRS The sub-band index changes in the second subset if level B is changed. SRS The sub-band index is divided into more than two subsets, and this process can be performed sequentially. For example... Figure 8 As shown, Figure 8 The sub-band index of b=3 is divided into two sets: the first set includes {n3=0,n3=1} and the second set includes {n3=2,n3=3}. Alternatively, the first set can include {n3=0,n3=2} and the second set can include {n3=1,n3=3}. Figure 8 The index changes at each level corresponding to the time-domain transition sequence of the neutron band are shown in Table 5. Figure 8 The set of transition levels in the equation is {b=1, b=2, b=3}.

[0200] Table 5

[0201]

[0202]

[0203] As shown in Table 5, during times 0 to 7, B is first... SRS After the sub-band index in level 3 belongs to the first set and the sub-band jump is completed, during time 8-15, B is... SRS =3 level, the sub-band index belongs to the second set after the sub-band jump is completed. Table 5 shows B. SRSThe sub-band indices at level 3 are divided into two sets. If there are more than two sets, the sub-band indices can be changed sequentially in the manner described above. Of course, the changing of sub-band sets doesn't have to be incremental; it can also be determined according to predetermined rules. See B. SRS The subband indices in the subband set of a certain level change the fastest, for example, following n. SRS,1 Change, then in b hop <b≤B SRS In this context, the smaller b is, the faster the sub-band index at level b changes; each index at level b follows n. SRS Changes, such as the index change cycle of level b, are... The agreement Regardless of the tree structure Because at this time the frequency range of the terminal transition is in b hop In a leaf corresponding to a fixed index, b hop The index on the formula remains constant. In the various formulas in this article, the relevant indices are... At that time, we all assumed At this point, for B SRS The jump index in the formula can also be understood as the index of the sub-band set. The index of the sub-band set is related to the index of the smallest index included in the sub-band set. H in formulas (4-2) to (4-3) can be considered as... b (n SRS ), F b (n SRS All of these are used to determine the starting sub-band index of the sub-band set. The different formulas in (6-1) to (6-4) mainly consider whether different sub-band sets can include the same sub-band set, and whether the sub-band sets are sequentially jumped.

[0204] G in formulas (4-1) to (4-4) b (n SRS,1 F is used to obtain the transition order of different subbands in a set of subbands. b (n SRS ),H b (n SRS This is used to obtain the starting subband index in the subband set. For formulas (4-1) and (4-4), it is assumed that B... SRS The sub-band indices are divided into a set, for each n SRS The terminal will follow G b (n SRS,1 Iterate through all sub-band indices in this sub-band index set. In formula (4-2), F is used. b (n SRS ) to obtain each n SRS The starting sub-band index in the corresponding sub-band index set, i.e., using formula (3), and b = BSRS Get F b (n SRS Formula (4-3) uses H. b (n SRS ) to obtain each n SRS The starting sub-band index in the corresponding sub-band index set. From formulas (6-1) to (6-4), it can be seen that H... b (n SRS The period of change of the value of ) is The main difference between the different formulas is the adjacent H. b (n SRS The step size between values, for example, in formula (6-1), the jump step size of the sub-band index is... Preferably, Greater than or equal to Q, or It is an integer multiple of Q. Because in each H b (n SRS At the value, the terminal will traverse Q consecutive subband indices, so H b (n SRS The interval should be at least Q values ​​to allow the base station to obtain more sub-band channel estimates as quickly as possible. For formula (6-2), B... SRS Sub-band indexes in Set of subbands, H b (n SRS The index of the starting subband of the obtained subband set, the indices of the subband sets of adjacent jumps differ by a certain amount. The subband set index belongs to The index of the starting subband of the subband set is equal to the subband set index multiplied by Q, so there is a multiplication by Q operation in formula (6-2). In this case, the subband set is a sequential jump.

[0205] Figure 8 In this scenario, the terminal's hopping bandwidth is a sub-band corresponding to b=0. For example, if the terminal's frequency hopping bandwidth belongs to the sub-band where b=0, the base station can obtain the channel estimation result for the sub-band n0=0 after one hopping cycle of the terminal. In other scenarios, the base station can also configure the terminal's frequency hopping bandwidth to be b. hop It is a non-zero sub-band. For example... Figure 9 As shown, the base station configures the terminal with a hopping bandwidth of b=1, for example, b hop =1, the bandwidth of the shaded area jumps. Figure 9 The index changes at each level corresponding to the time-domain transition sequence of the neutron band are shown in Table 6. Figure 9 The set of transition levels in the data is {b=2, b=3}.

[0206] Table 6

[0207]

[0208] Furthermore, it can be limited that the change in the subband index of the first subband set to change occurs on consecutive time-domain symbols in the continuous time domain, i.e.

[0209] Option 2: Option 1 involves letting B... SRS The sub-band index of the level changes first, then b. hop <b≤B SRS or b hop <b<B SRS In this context, the smaller 'b' is, the faster the sub-band index at level 'b' changes. In this scheme, B... SRS A subband within a level comprises multiple PRB subsets (also called PRB sets or partial PRB sets). The terminal's SRS at each time step occupies only one PRB subset, a process known as partial SRS transition. Alternatively, the PRB subset index can be transitioned first, and then... hop <b≤B SRS or b hop <b<B SRS In this context, the smaller b is, the faster the sub-band index at the b level changes. In practice, because B... SRS A level's subband comprises multiple PRB subsets; the level corresponding to these multiple PRB subsets can also be called level B. SRS +1, or P SRS When comparing the size of b, P SRS The value of B SRS +1. P SRS At each level, a subset of PRBs constitutes a subband, which can be used to define B in the formula of Scheme 1. SRS Replace with P SRS Or B SRS +1. Change the index of the PRB subset in the partial SRS transition first, then change the index in b. hop <b≤B SRS +1 or b hop <b≤B SRS In the middle, the smaller b is, the faster the subband index at the b level changes. SRS The level is called virtual B. SRS +1 level, at this time n b An index for a subset of the PRB, i.e., a B SRS Includes indexes of multiple PRB subsets. This differs from the true B, which has a multi-level structure agreed upon with base stations and terminals. SRS +1 level, because in the agreed multi-level structure, one possibility is that there might be no B. SRS +1 level, such as BSRS =3, or in a conventional multi-level structure, B SRS In level +1, the size of a subband may not be equal to a PRB set. The multi-level structure agreed upon here refers to multiple structures determined by the base station and terminal through agreed mapping tables and signaling. Furthermore, in formula (1), the corresponding P... SRS level m SRS,b =m SRS,BSRS / P F Or, to distinguish the actual B in the table. SRS +1 level, b hop <b≤B SRS +1, replace with {b,b hop <b≤B SRS Or b = P SRS Scheme 1 can also be called subband hopping, and Scheme 2 can be called PRB subset hopping. That is, in Scheme 1, the terminal has each frequency domain transmission opportunity, and at this time k = k F ,k F less than or equal to P F Positive integers.

[0210] Option 3: Option 3 is another implementation of Option 2. For partial SRS hopping, for example, the frequency domain position occupied by the SRS at a certain moment is determined according to formula (1). and We can obtain, for example, from the following formula (7):

[0211]

[0212] in,

[0213] k F ∈{0,1,…,P F -1} can be notified by the base station or agreed upon by the base station and the terminal, serving as the index for a subset of the PRB, P F For B SRS The number of PRB subsets included in a subband of a level, i.e., N pSRS .

[0214] k hop =F(n) SRS,2 (9);

[0215] Where F(n) SRS,2 ) is n SRS,2 The function, or n SRS,2 and k hop The mapping table between them is shown in Table 4. At this point, n in Table 4... SRS,1 G b (n SRS,1Replace ) with F(n) SRS,2 ),,in Indicates the starting position of the frequency domain occupied by SRS and B SRS The offset of the starting position of a sub-band. Where n SRS,2 =n SRS,1 At this point, n can also be... SRS,2 Replace with n SRS,1 .

[0216] Formula (2) is updated to the following formula:

[0217]

[0218] If F(n) SRS,2 () represents a formula, which can be one or more of the following formulas:

[0219] F(n SRS,2 )=a*n SRS,2 modV(11-1);

[0220] F(n SRS,2 )=a*n SRS,2 (11-2);

[0221]

[0222] Where Z is less than or equal to P F The value of W is a positive integer greater than or equal to 0. V is a value less than or equal to P. F A positive integer. When V is less than P. F At that time, the terminal is allowed to be in P SRS SRS is not sent on certain PRB subsets within a level. Formulas (11-1) and (11-2) only allow consecutive PRB subset jumps. In formula (11-3), the first Z PRB subset indices jump rapidly, and after a long period, the Z rapidly jumping subsets can be another Z PRB subsets. In formula (11-3), Z is preferably less than or equal to V, and W (the second step size) is a positive integer greater than or equal to Z. For example, V = W * Z, where a is a positive integer greater than or equal to 0 (the first step size). It is a positive integer greater than or equal to 1. Where V is less than or equal to... V is less than or equal to Condition one can be... If the integer is not a valid integer, then condition two can be... are integers, where It is a positive integer greater than or equal to 1.

[0223] In schemes 1 to 3 above, n SRS ,n SRS,1In the calculation, g equals 1.

[0224] Option 4 is a combination of Option 1 and Option 2 (or Option 3). First, the PRB subset index changes, and then B... SRS Level index change, then b hop <b≤B SRS In this context, the smaller b is, the faster the sub-band index corresponding to level b changes. At this point, n... SRS,2 It is the ratio of the change period to n SRS,1 Even smaller parameters are needed for B. SRS The sub-band index jump rules in the level can be obtained using the method in Scheme 1. For P SRS The sub-band index jump rule in the level (which can also be called the PRB subset index jump rule, where P...) SRS A subband at a level is a subset of the aforementioned PRB. Option 2 or 3 can be used, in which case n is required. SRS ,n SRS,1 In the calculation, g is greater than 1, where g represents the number of PRB subsets that undergo consecutive jumps first, and g ≤ P. F .

[0225] in, or For example, g is equal to V or Z in (11-1) to (11-5).

[0226] Option 5: The first set of b includes one or more b's, the second set of b includes zero or more b's, and the third set of b includes zero or more b's. The indices at the b level in the third set of b remain unchanged. During frequency domain transitions, the indices at the b level in the first set of b are transformed first. If the second set of b includes more than zero b's, then the indices at the b level in the second set of b are transformed.

[0227] In one implementation, the b in the third b set does not belong to either the first b set or the second b set. The first b set and the second b set can be different; for example, the first b set may be {P}. SRS The second set b is b hop <b≤B SRS (As shown in scheme 2 or 3), the first set b can also be a subset of the second set b, for example, the first set b is {B}. SRS ,P SRS As shown in Scheme 4, the second set of b is {b, b hop <b≤B SRS b = P SRS}. Or, the first set b and the second set b include some of the same b, for example, the first set b is {B}. SSS ,PSRS The second set b is b hop <b≤B SRS .

[0228] In one implementation, the b included in the third b set is greater than or equal to the b in the first b set, and also greater than or equal to the b in the second b set. Or the b included in the third b set is greater than the b in the first b set, and also greater than the b in the second b set.

[0229] In one implementation, the first set of b includes the largest one or more b in the second set of b.

[0230] In another implementation, b in the first set of b is greater than or equal to b in the second set of b, or b in the first set of b is greater than b in the second set of b.

[0231] In the case where the first set of b includes multiple b's, in one implementation, the larger the b's value, the higher the n's value in the b's hierarchy. b The shorter the index change time domain length, the smaller b is in another implementation, and the smaller n is at the b level. b The shorter the time domain length of the index change, the smaller the frequency domain interval between adjacent frequency domain transmission opportunities, while the larger the frequency domain interval between adjacent frequency domain transmission opportunities.

[0232] For example, if the first set b is A b,1 According to n SRS,1 Determine each b in the first set of b. n in the level. b The pattern of index changes is that the larger b is, the more n appears at level b. b The shorter the index change cycle, the more likely one or more of the following schemes can be used.

[0233] When the second set of b includes multiple b, the smaller the b, the higher the level of n in the b. b The shorter the index change cycle.

[0234] In one implementation, the base station can use signaling to notify the relevant parameters used to determine the first b set, the second b set, and the second b set.

[0235] Specifically, formula (1) is still used to determine the frequency domain position occupied by the SRS, and formula (2) is replaced by one of the following formulas:

[0236]

[0237] Where A b,1 Let b be the first set of b, and let b be the maximum value in the set. max,A1 The minimum value is b. min,A1 A b,2It is the second set b, where the maximum value is b. max,A2 The minimum value is b. min,A2 If a b belongs to both the first set of b and the second set of b, then this b corresponds to n. b After executing any one of formulas (13-1) to (13-4), execute the following formula:

[0238] n b =(n b,1 +n b,2 )modN b (13-5);

[0239] Or, when executing any of the formulas (13-1) to (13-4), one of the following formulas shall be used for such a b:

[0240]

[0241]

[0242] Or at this point, n of b b Based on the n of the first set b b The calculation method for n b , or according to n of the first set b b Calculation method to calculate n b .

[0243] Where F b,2 (n SRS Obtained through one or more of the following formulas:

[0244]

[0245] in or f(n) SRS ) = n SRS Conditions one and two are based on N. b W b Determine, for example, if condition one is N b It is W b The integer multiple of N, condition two is N b Not W b Integer multiples of.

[0246] Where V b ≤N b When the value is less than a certain threshold, it is permissible not to send SRS on the corresponding sub-band index of level b. b It is an integer greater than or equal to 0 (first step length). When it is greater than 0, it means that the values ​​in this level are first selected with smaller index intervals (i.e., a). b) Jump, and then with a larger index interval W b (Second step length), at this time a b Less than or equal to W b Of course, you can also use a b Greater than or equal to W b In short, first use the index interval a b Jump, then with W b The index interval jumps, and the former's change period is shorter than the latter's. When a b When = 0, for a b, there is a time-domain jump duration, for example... Periodic jump, where Z b It is less than or equal to N b The value of W b It is a positive integer greater than or equal to 1. Z is preferred. b Less than or equal to V b W b It is greater than or equal to Z b A positive integer. For example, V. b =W b *Z b This allows for rapid, continuous jumps in the Z-index subset. b The index Z in this subset b After one index jump is completed, the next index subset is jumped to. The next index subset is then... or Determined. Where n SRS,b,3 n is one of the following: SRS,1 n SRS , Among them, w b e is a positive integer greater than or equal to 1. b =Z b Or less than Z b In one implementation, if a b =0,e b =1, if a b Greater than 0, e b Greater than

[0247] In formulas (14-1) to (14-6), for a b W b , z b Different values ​​of 'b' are allowed, as are different values ​​of 'b'. In the case of the same value, the subscript 'b' can be omitted. In one embodiment, 'a'... b W b According to N b Get, for example, V b Less than or equal to N bpositive integers, A positive integer greater than or equal to 1 indicates that the sub-band index at level b is divided into V. b / z b There are 1 group, and each group contains an index interval of W. b Or N b -W b -1 (third step size), now jump in the first group, then jump in the second group, and so on. The jump step size of the sub-band index is W. b For example, when When there is no change, or the jump step size is N b -W b -1 (third step length), when When changes occur, three step sizes are applied to different sub-band index change durations. In some embodiments, condition one is V. b / z b It is a non-integer, i.e., V b Not z b An integer multiple of V. Condition two is V. b / z b It is an integer, i.e., V b It is z b A positive integer. b The difference between indices used to control adjacent jumps, z b The larger Z is, the smaller the interval. b =N b a b =1, so formula (14-1) can be used, and W b =0.

[0248] In formulas (14-1) to (14-6), Right now

[0249] Q b This represents the number of consecutive jumps at level b in the first set b, for example, Z in formulas (15-1) to (15-3). b Or N b .

[0250] For the first set b, F b,1 (n SRS,1 Obtained through one or more of the following formulas:

[0251]

[0252]

[0253] In the denominators of (15-1)~(15-6) It can also be replaced with nSRS,1 At this time n SRS,1 In the calculation formula, g = 1. Conditions three and four are based on a. b,1 and Z b Determine, for example, condition three is Z. b It is a b1 Integer multiples of Z, condition four or five b Not a b1 an integer multiple of. b1 Positive integers greater than or equal to 1, and / or

[0254] Formulas (15-1) to (15-3) demonstrate that in the first set b, the larger b is, the more n b The shorter the period of change, the more formulas (15-4) to (15-6) are realized. In the first set b, the smaller b is, the more n b The shorter the cycle of change.

[0255] F b,3 (n SRS Obtain it through at least one of the following methods:

[0256] F b,3 (n SRS ) = F b,2 (n SRS (16-1)

[0257]

[0258] n SRS,1 In the calculation formula, g = 1.

[0259] In one implementation of scheme 5, the second b sub-band set includes 0 b's, such as B'. SRS =b hop .

[0260] Schemes 1-4 above can be understood as special cases of scheme 5. In scheme 1, the first set of b is {B}. SRs The second set b is b hop <b≤B SRS or b hop <b<B SRS The third set b is 0 ≤ b ≤ b hop In schemes 2 and 3, the first set b is {P} SRS The second set b is b hop <b≤P SRS or b hop <b<P SRS The third set b is 0 ≤ b ≤ b hop In scheme 4, the first set of b is {B} SRS ,PSRS The second set b is b hop <b≤P SRS or b hop <b<P SRS When the first set b and the second set b contain the same b, and n is used for each of the two sets b respectively. b The calculation formula is used to calculate the final n of the same b based on the two results. b For example, by using any one of the formulas (13-5) to (13-8), F can be made b,2 (n SRS a in ) b equals 0, F b,1 (n SRS ), F b,3 (n SRS W in ) b =0,c b =0.

[0261] The above formula (1) or formula (7) only gives the starting position of the PRB of the sub-band of the SRS transition in the multi-level structure. It can also be said to determine the relative offset between the starting position of the sub-band and the starting position of a sub-band with b=0. Finally, the actual frequency domain position of the SRS needs to be determined. The starting position of the frequency domain of the root sub-band of this multi-level structure in the BWP or system bandwidth, the transition rule of the root, and the comb position in the PRB (i.e. the RE position) can be obtained by existing methods or by future improved methods.

[0262] The above calculates n b In the formula, n can also be... SRS Replace all with n SRS,1 And multiply the denominator in the formula by g*Q or by... The above method involves first calculating n. SRS When divided by g*Q or divided by It can also be used to calculate n b In the formula, for example F b ,F b,2 n SRS Replace with n SRS,1 Then multiply the denominator by g*Q or by The two are essentially equivalent, or you can change the n in the formula. SRS Replace with one of the following: It is also basically equivalent. For example, formula (3) can be changed to one of the following formulas:

[0263]

[0264] Where d = g*Q or f1(n SRS Substituting (17-2) into the formula yields the same result, only the formula form remains the same. This paper only provides one formula expression that follows the above sub-band index jump rule; other formula expressions are not excluded. Other formula expressions that can calculate the same value as the above formula do not affect the inventiveness of this patent. In one embodiment, at least one of the following limitations may be present.

[0265]

[0266] In the above formula, R represents the number of time-domain symbols included in a frequency-domain transmission opportunity. These R time-domain symbols are R consecutive time-domain symbols including SRS. In these R time-domain symbols, the PRB set occupied by SRS is the same. In two adjacent frequency-domain transmission opportunities, the PRB set occupied by SRS changes.

[0267] In one implementation, z in the above formula b , z b,1 At least one of them is a fixed value, and / or z b , z b,1 At least one of them is a value determined based on the signaling received from the base station.

[0268] In the above scheme, when comparing the size of b, P SRS The value is B SRS +1, and we get the comparison result. Where B = B SRS Or B = B SRS +1.

[0269] Option 6, in this option, does not have a multi-level structure; it simply divides the transition bandwidth into D sub-bands, where the transition occurs over time within each of the D sub-bands. During each frequency domain transmission, SRS is transmitted only within one sub-band. This can also be considered as having only a single-level structure, where B = 0 and N0 = D. The sub-band index n can then be calculated using the same method as n0 in the first set b. b , and / or according to the second set of b, n b The calculation method involves calculating the sub-band index n0, or it can be considered as a two-level structure where b = 0 and B = B. SRS =1, which means N1 = D sub-bands. At this point, we can proceed according to the first set b, n b The calculation method is to calculate the sub-band index n1, and / or according to the n of the second b set. b The subband index n1 is calculated, but the jump step size of the subband index includes a step size less than half of D, such as a, a mentioned above. b,1 Less than D / 2, or z,z b,1 Greater than 2.

[0270] In this article, SRS refers to a group of SRS ports, including one or more SRS ports, corresponding to one or more SRS resources. All of these one or more SRS resources include this group of SRS ports. One of the SRS resources is the configuration logical unit of SRS. An SRS resource includes one or more SRS ports. The base station configures the number of SRS ports included in each SRS resource, the time domain parameters, frequency domain parameters, code domain parameters, power parameters, and whether frequency hopping is performed for each SRS resource.

[0271] The above example illustrates the frequency hopping rule using a set of SRS ports. The same scheme can be applied to frequency hopping rules for other reference signals, simply replacing SRS with other reference signals. These other reference signals include at least one of the following: downlink DMRS, uplink DMRS, uplink PRACH signal, downlink synchronization signal, downlink CSI-RS, uplink PT-RS, and downlink PT-RS. If it is a downlink reference signal, replace "transmit" with "receive" and "receive" with "transmit." Replace "terminal" with "base station" and "base station" with "terminal." Replace "SRS" in the formula with the name of the other reference signal mentioned above.

[0272] In the formulas in this article, the parameter with the subscript b indicates that b is determined separately for each level. However, it is also possible that some parameters with the subscript b are the same for all levels of b. In this case, b in the parameter can be omitted. Alternatively, if the value is the same for all b in a set of levels, the subscript b can be replaced with the index of the set of levels.

[0273] In one implementation, the base station can also notify the selection information of the subband index hopping rule via signaling. For example, it can select from at least one of the following: the smaller the level, the shorter the duration of the subband index hopping corresponding to the level; the larger the level, the shorter the duration of the subband index hopping corresponding to the level. In one implementation, the base station can also notify the hopping step size of the subband index via signaling information.

[0274] The disclosed embodiments can divide the communication device into functional modules according to the above method embodiments. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this disclosed embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each functional module according to each function.

[0275] Figure 10This is a schematic diagram of a communication device provided in an embodiment of this disclosure. The communication device can execute the communication method provided in the above-described method embodiments. Figure 10 As shown, the communication device includes: a determining module 1001 and a transmitting module 1002.

[0276] Module 1001 is used to determine the multi-level structure corresponding to the frequency domain resources of the signal, wherein the multi-level structure includes B levels; wherein a sub-band of level b-1 includes N levels of level b. b N sub-bands, where b = 1, ..., B-1; B is a positive integer greater than or equal to 2; b It is a positive integer greater than or equal to 1;

[0277] The determination module 1001 is also used to determine the time-domain variation rules of the sub-band index of each of the B levels;

[0278] The transmitting module 1002 is used to transmit signals in a frequency-hopping manner according to the time-domain change rules.

[0279] In some embodiments, the B levels include at least a first level and a second level, and the time-domain change rules include: both the sub-band index of the first level and the sub-band index of the second level change with time, the change duration of the sub-band index of the first level is less than the change duration of the sub-band index of the second level, wherein the frequency domain length of a sub-band of the first level is less than or equal to the frequency domain length of a sub-band of the second level, and / or the level value b of the first level is greater than the level value b of the second level.

[0280] In some embodiments, both the first level and the second level belong to the first level set, the first level set includes at least two levels, and the time-domain variation rules include at least one of the following:

[0281] In the first-level set, the larger the sub-band level b, the higher the priority of the sub-band index of sub-band level b during the time domain transition; in the first-level set, the larger the sub-band level b, the shorter the time domain transition duration of the sub-band index of sub-band level b.

[0282] In some embodiments, the multi-level structure includes one or more third levels, and the time-domain variation rule includes: for each third level, the time-domain transition step size of the sub-band index of the third level includes a first step size, which is less than or equal to half the number of sub-band indices included in the sub-band index set.

[0283] In some embodiments, the subband index set satisfies at least one of the following:

[0284] The sub-band index set includes sub-band indices;

[0285] The sub-band index set corresponds to the same third level in one or more third levels;

[0286] Each of the multiple third levels corresponds to its own set of sub-band indexes, first step length, and sub-band index;

[0287] Each subband index in the subband index set corresponds to a subband with the same length.

[0288] In some embodiments, for each set of sub-band indices corresponding to one or more third levels, at least one of the following is also satisfied:

[0289] Each subband index in the subband index set corresponds to one or more subbands in the third level; when each subband index corresponds to multiple subbands, the signal transmitted by the first node in a frequency domain transmission timing corresponds to only one of the multiple subbands.

[0290] The subband index set includes all the different subband indexes at the third level;

[0291] The subband index is the index of a third subband in the third subband set corresponding to the subband index, where a fourth subband at the fourth subband level includes all subbands in the third subband set.

[0292] In some embodiments, the time-domain transition rule of the subband index is determined according to the following formula: a b *(n SRS,b, 3modZ b ), where a b Let n be the length of the first step. SRS,b,3 Z is a counter related to the frequency domain transmission timing of the signal. b It is a positive integer less than or equal to the number.

[0293] In some embodiments, the time-domain transition rule of the subband index further includes at least one of the following:

[0294] The jump step size of the subband index also includes a second step size, where the second step size is greater than or equal to half the number;

[0295] The step size of the subband index also includes a third step size, which is larger than the second step size;

[0296] The step size of the subband index also includes a second step size, which is larger than the first step size.

[0297] In some embodiments, when there is a subband index jump on multiple consecutive time-domain symbols, the jump step size includes the first step size;

[0298] When the subband index jumps on discontinuous time-domain symbols, the jump step size of the subband index includes the second step size and the third step size.

[0299] When the subband index jumps with the first step length, the jump duration is the first duration; when the subband index jumps with the second step length, the jump duration is the second duration, where the first duration is less than the second duration.

[0300] When the subband index jumps with the second step size, the jump duration is the second duration; when the subband index jumps with the third step size, the jump duration is the third duration, where the second duration is less than the third duration.

[0301] In some embodiments, the hopping rule of the subband index is determined according to at least one of the following formulas:

[0302]

[0303] (a b *(n SRS,b,3 modZ b )+W b *n SRS,b,4 )modV b ;

[0304]

[0305] Where, f(n) SRS )=(n SRS modQ b,3 ) or f(n SRS ) = n SRS ,a b Let n be a positive integer of length greater than or equal to 1 in the first step. SRS,b,3 A counter related to the frequency domain transmission timing of the signal, V b Z b Let Q be a positive integer less than or equal to the number of digits, where Q is a positive integer less than or equal to the number b,2 Q b,3 Q b,4 All are positive integers greater than or equal to 1, W b >a b W b Indicates the second step size or W b =a b W b Indicates the second step size, n SRS Another counter that represents the frequency domain transmission timing of a signal, in n SRS During the time period that remains unchanged, n SRS,b,3 n remains unchanged SRS =n SRS,b,3 , or changed once or multiple times, and / or n SRS According to n SRS,b,3 get.

[0306] In some embodiments, the jump step size of a subband index is less than or equal to half the number of subband indices included in the subband index set, satisfying at least one of the following:

[0307] When the number is equal to 2, the first step length of the sub-band index is equal to half the number;

[0308] When the number is greater than 2, the first step length of the subband index is less than half the number;

[0309] The first step length of the subband index is determined by the quotient between the number and the first parameter, where the value of the first parameter is greater than 2, and the first parameter is either a conventional value or a value determined based on the received signaling information.

[0310] In some embodiments, it is characterized by at least one of the following:

[0311] In two consecutive frequency domain transmissions of the signal, the step size of the subband index transition is the first step size;

[0312] In two consecutive frequency domain transmissions of the signal, the step size of the subband index transition is less than or equal to half the number of subband indices included in the subband index set.

[0313] In two consecutive transitions of the subband index, the transition step size of the subband index is less than or equal to half the number of subband indices included in the subband index set, wherein the time during which the subband index remains unchanged includes one or more frequency domain transmission opportunities of the signal.

[0314] In some embodiments, the multiple levels in the multi-level structure include levels in a second set of levels, and the rules for time-domain variation include at least one of the following:

[0315] The temporal jump duration of the sub-band index of the level in the first-level set is less than the temporal jump duration of the sub-band index of the level in the second-level set;

[0316] During the frequency hopping process of the signal, the subband index of the level in the first level set is traversed once at different times, and then the subband index of the level in the second level set jumps once.

[0317] The time-domain jump step size of the first-level subband index in the first-level set includes the first step size, and the time-domain jump step size of the second-level subband index in the second-level set includes the second step size. The first step size is less than half the number of subband indices included in the subband index set corresponding to the first level, and the second step size is greater than or equal to half the number of subband indices included in the subband index set corresponding to the second level.

[0318] When the first-level set includes multiple levels, the larger the level in the first-level set, the shorter the time for the sub-band index to jump.

[0319] When the first-level set includes multiple levels, the smaller the level in the first-level set, the shorter the time for the sub-band index to jump.

[0320] When the second-level set includes multiple levels, the smaller the level in the second-level set, the shorter the time it takes for the sub-band index of the level to jump.

[0321] In some embodiments, the first-level set or the second-level set satisfies at least one of the following:

[0322] The first level set includes the highest level in the second level set;

[0323] Each level in the first level set is greater than the highest level in the second level set;

[0324] Each level in the first level set is greater than or equal to the highest level in the second level set;

[0325] The first-level set and the second-level set include one or more of the same levels;

[0326] The first-level set and the second-level set include different levels;

[0327] The first level set includes the largest one or more levels in the multi-level set;

[0328] The second-level set includes sub-bands of all levels in the multi-level set;

[0329] Each level in the second-level set is less than the largest level in the first-level set and is greater than or equal to a predetermined value.

[0330] In some embodiments, the multi-level structure also includes levels in a third-level set, which do not belong to the first-level set or the second-level set; wherein the sub-band index of the levels in the third-level set does not change during frequency hopping.

[0331] In some embodiments, where the first-level set includes only the largest level B-1 in the multi-level structure, the sub-band index n of the largest level B-1 is... b Determine based on at least one of the following formulas:

[0332] (F b,1 (n SRS,1 )+k)modN b ;

[0333] (F b,1 (nSRS,1 )+F b,2 (n SRS )+k)modN b ;

[0334] F b,1 (n SRS,1 )modN b ;

[0335] Where n SRS,1 A counter related to the frequency domain transmission timing of the signal, n SRS Another counter related to the frequency domain transmission timing of the signal, where in n bRS During a period of time when n remains unchanged, SRS,1 n remains unchanged SRS =n SRS,1 , or n SRS,1 It changed once or multiple times, and / or n RRS According to n SRS,1 Confirmed; F b,1 (n SRS,1 0 is n SRS,1 The function, F b,2 (n SRS ) is n SRS The function; k is a positive integer greater than or equal to 0, k is a fixed value or determined according to the signaling information received from the second node, B-1 is B SRS Or, level B-1 is a virtual level B. SRS +1, then N b =P F Level B SRS A subband in +1 is a partial PRB set. B SRS It is determined based on the received signaling information.

[0336] In some embodiments, F b,1 (n SRS,1 ( ) satisfies at least one of the following;

[0337] F b,1 (n SRS,1 ) = a b,1 *(n SRS,1 modZ b );

[0338]

[0339]

[0340] Z b Greater than or equal to Q, or Z b Less than or equal to N b , zb,1 c is a positive integer greater than or equal to 2. b It is 1 or 0; a b,1 For less than or equal to N b A positive integer; or a b,1 =N b / z b,1 Q is a positive integer greater than or equal to 1, and / or Q is the number of consecutive transitions of the subband index in level B-1, where consecutive transitions occur during consecutive frequency domain transmission opportunities of the reference signal; b max,A1 =B-2,b min,A1 =b max,A1 .

[0341] In some embodiments, F b,2 (n SRS ( ) satisfies at least one of the following:

[0342]

[0343] Where Q is a positive integer greater than or equal to 1, and S / Q is less than or equal to Z. b positive integers, z b Greater than or equal to 1.

[0344] In some embodiments, subband index n b It must satisfy at least one of the following characteristics:

[0345]

[0346] Among them, F b,2 (n SRS ) and F b,4 (n SRS,1 ) are respectively n SRS ,n SRS,1 The function.

[0347] In some embodiments, F b,2 (n SRS ( ) satisfies at least one of the following:

[0348]

[0349]

[0350] in or f(n) SRS ) = n SRS Conditions one and two are based on V b W b Confirmed, V b Less than or equal to N b a b c is a positive integer greater than or equal to 1.b It is 1 or 1; z b b is a positive integer greater than or equal to 1; min,A2 =b hop W b For less than N b positive integers; e b A positive integer greater than or equal to 1. z b e is a fixed value or a value determined based on received signaling information. b A fixed value or a value determined based on received signaling information.

[0351] In some embodiments, the signal includes at least one of the following: an uplink sounding reference signal, an uplink data channel signal, an uplink control channel signal, an uplink demodulation reference signal, an uplink random access signal, a downlink measurement reference signal, and a downlink demodulation reference signal; and / or,

[0352] In a multi-level structure, each level corresponds to a frequency domain sub-band size occupied by the signal; and / or,

[0353] In a multi-level structure, the smaller the level b, the longer the length of a frequency domain subband at that level.

[0354] In some embodiments, the communication device further includes a receiving module 1003.

[0355] The receiving module 1003 is used to receive a first signaling from the second node. The first signaling includes parameters for determining at least one of the following: relevant information of the first level set, relevant information of the second level set, relevant information of the second level set, a first parameter, a first step length, a second step length, a third step length, and selection information of the transition rule.

[0356] In some embodiments, n SRS,b,3 The following are determined based on at least one of the following: the index l′ of the time-domain symbol containing the signal in a plurality of consecutive time-domain symbols including the signal; the number s of the time-division port groups corresponding to the signal; the number R of time-domain symbols included in a single frequency-domain transmission of the signal; and the number of time slots included in a frame. Frame number n f The time slot index where the signal is located Signal period offset T offset The number of frequency domain transmission opportunities Q of the signal included within the opportunity when the subband index remains unchanged. b,1 The period T of the signal RS The number of consecutive time-domain symbols of a signal within one period. Where different b corresponds to n SRS,b,3 They can be the same or different.

[0357] In some embodiments, n SRS,1 ,n SRS ,n SRS,b,3 At least one of them is determined according to at least one of the following:

[0358]

[0359] in, or

[0360] Where Q, Q b,1 It is a positive integer greater than or equal to 1.

[0361] In some embodiments, the determining module 1001 is further configured to determine the number m of physical resource blocks included in a sub-band of each of the B levels, based on the time-domain variation rules. SRS,b The number of subcarriers included in a physical resource block And the highest level B-1 in each level, determines the set of physical resource blocks occupied by the signal in each frequency domain transmission opportunity;

[0362] The sending module 1002 is used to send signals within a defined set of physical resource blocks;

[0363] One of the frequency domain transmission opportunities includes one or more time domain symbols. In the case of multiple time domain symbols, the signal occupies the same set of physical resource blocks across the multiple time domain symbols.

[0364] In some embodiments, according to Determine the set of physical resource blocks occupied by the signal in each frequency domain transmission opportunity, where: in, The first offset is the offset of the signal's frequency domain position relative to the starting frequency domain position of a sub-band at the lowest level (b=0) in the multi-level structure, where n is the first offset. b This is the subband index of a subband of level b.

[0365] Figure 11 This is a schematic diagram of another communication device provided in an embodiment of this disclosure. The communication device can execute the communication method provided in the above-described method embodiments. Figure 11 As shown, the communication device includes: a determining module 1101 and a receiving module 1102.

[0366] Module 1101 is used to determine the multi-level structure corresponding to the frequency domain resources of the signal, wherein the multi-level structure includes B levels; wherein a sub-band of level b-1 includes N levels of level b. b N sub-bands, where b = 1, ..., B-1; B is a positive integer greater than or equal to 2; bIt is a positive integer greater than or equal to 1;

[0367] The determination module 1101 is also used to determine the time-domain variation rules of the sub-band index of each of the B levels;

[0368] The receiving module 1102 is used to receive signals from the first node according to the time domain variation rules. The signals are signals sent by the first node in a frequency hopping manner according to the time domain variation rules.

[0369] In some embodiments, the B levels include at least a first level and a second level, and the time-domain change rules include: both the sub-band index of the first level and the sub-band index of the second level change with time, the change duration of the sub-band index of the first level is less than the change duration of the sub-band index of the second level, wherein the frequency domain length of a sub-band of the first level is less than or equal to the frequency domain length of a sub-band of the second level, and / or the level value b of the first level is greater than the level value b of the second level.

[0370] In some embodiments, the multi-level structure includes one or more third levels, and the time-domain variation rule includes: for each third level, the time-domain transition step size of the sub-band index of the third level includes a first step size, which is less than or equal to half the number of sub-band indices included in the sub-band index set. It should be noted that the third level and the first level can be the same or different.

[0371] In implementing the functionality of the integrated modules described above using hardware, this disclosure provides another possible structure for the communication device involved in the above embodiments. For example... Figure 12 As shown, the communication device includes: a processor 1202 and a bus 1204. Optionally, the communication device may also include a memory 1201; alternatively, the communication device may also include a communication interface 1203.

[0372] Processor 1202 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 1202 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 1202 may also be a combination of functions implementing computational capabilities, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0373] The communication interface 1203 is used to connect with other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0374] The memory 1201 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0375] As one possible implementation, the memory 1201 can exist independently of the processor 1202. The memory 1201 can be connected to the processor 1202 via a bus 1204 and is used to store instructions or program code. When the processor 1202 calls and executes the instructions or program code stored in the memory 1201, it can implement the method provided in the embodiments of this disclosure.

[0376] In another possible implementation, the memory 1201 can also be integrated with the processor 1202.

[0377] Bus 1204 can be an extended industry standard architecture (EISA) bus, etc. Bus 1204 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 12 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0378] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a computer, cause the computer to perform the methods described in any of the above embodiments.

[0379] For example, the computer-readable storage media described above may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices for storing information and / or other machine-readable storage media. The term "machine-readable storage media" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0380] This disclosure provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the methods described in any of the above embodiments.

[0381] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, Applied to the first node, the method includes: Determine the multi-level structure corresponding to the frequency domain resources of the signal, wherein the multi-level structure includes B levels; wherein a sub-band of level b-1 includes N levels of level b. b N sub-bands, where b = 1, ..., B-1; B is a positive integer greater than or equal to 2; b It is a positive integer greater than or equal to 1; Determine the time-domain variation rules of the sub-band index for each of the B levels; The signal is transmitted in a frequency-hopping manner according to the time-domain variation rule.

2. The method according to claim 1, characterized in that, The B levels include at least a first level and a second level. The time-domain change rules include: both the sub-band index of the first level and the sub-band index of the second level change with time, the change duration of the sub-band index of the first level is less than the change duration of the sub-band index of the second level, wherein the frequency domain length of a sub-band of the first level is less than or equal to the frequency domain length of a sub-band of the second level, and / or the level value b of the first level is greater than the level value b of the second level.

3. The method according to claim 2, characterized in that, Both the first level and the second level belong to the first level set, which includes at least two levels. The time-domain variation rule includes at least one of the following: In the first level set, the larger the sub-band level b, the higher the priority of the sub-band index of the sub-band level b being traversed during the time domain transition. In the first level set, the larger the subband level b, the shorter the time domain jump duration of the subband index of the subband level b.

4. The method according to any one of claims 1-3, characterized in that, The multi-level structure includes one or more third levels, and the time-domain change rule includes: for each third level, the time-domain jump step size of the sub-band index of the third level includes a first step size, which is less than or equal to half the number of sub-band indices included in the sub-band index set.

5. The method according to claim 4, characterized in that, The sub-band index set satisfies at least one of the following: The sub-band index set includes the sub-band index; The sub-band index set corresponds to the same third level in one or more third levels; Each of the plurality of third levels corresponds to its respective set of subband indexes, the first step length, and the subband index; Each subband index in the subband index set corresponds to a subband with the same length.

6. The method according to claim 5, characterized in that, For each of the one or more third levels, the set of sub-band indices also satisfies at least one of the following: Each subband index in the subband index set corresponds to one or more subbands in the third level; when each subband index corresponds to multiple subbands, the signal transmitted by the first node in a frequency domain transmission timing corresponds to only one of the multiple subbands. The subband index set includes all the different subband indices of the third level; The subband index is the index of a third subband corresponding to the subband index in the third subband set, wherein a fourth subband at the fourth subband level includes all subbands in the third subband set.

7. The method according to claim 4, characterized in that, The time-domain jump rule of the sub-band index is determined according to the following formula: a b *(n SRS,b,3 modZ b ), where a b Let n be the length of the first step. SRS,b,3 Z is a counter related to the frequency domain transmission timing of the signal. b It is a positive integer less than or equal to the stated number.

8. The method according to claim 4, characterized in that, The time-domain jump rule of the sub-band index also includes at least one of the following: The jump step size of the subband index also includes a second step size, wherein the second step size is greater than or equal to half of the number; The step size of the subband index also includes a third step size, wherein the third step size is greater than the second step size; The step size of the subband index also includes a second step size, wherein the second step size is greater than the first step size.

9. The method according to claim 8, characterized in that, When the subband index jumps over multiple consecutive time-domain symbols, the jump step size includes the first step size; When the subband index jumps over a non-continuous time-domain symbol, the jump step size of the subband index includes the second step size and the third step size; When the sub-band index jumps with the first step length, the jump duration is the first duration; when the sub-band index jumps with the second step length, the jump duration is the second duration, wherein the first duration is less than the second duration. When the sub-band index jumps with the second step size, the jump duration is the second duration; when the sub-band index jumps with the third step size, the jump duration is the third duration, wherein the second duration is less than the third duration.

10. The method according to claim 9, characterized in that, The transition rule of the sub-band index is determined according to at least one of the following formulas: (a b *(n SRS,b,3 modZ b )+W b *n SRS,b,4 )modV b ; Where, f(n) SRS )=(n SRS modQ b,3 ) or f(n SRS ) = n SRS ,a b The first step is a positive integer with a length greater than or equal to 1, n SRS,b,3 V is a counter related to the frequency domain transmission timing of the signal. b Z b Q is a positive integer less than or equal to the stated number, where Q b,2 Q b,3 Q b,4 All are positive integers greater than or equal to 1, W b >a b W b Indicates the second step size or W b =a b W b This represents the second step size, n. SRS Another counter that represents the frequency domain transmission timing of the signal, in n SRS During the time period that remains unchanged, n SRS,b,3 n remains unchanged SRS =n SRS,b,3 , or changed once or multiple times, and / or n SRS According to n SRS,b,3 Obtain; n SRS,b,4 It is another counter related to the frequency domain transmission timing of the signal.

11. The method according to any one of claims 4-10, characterized in that, The jump step size of the subband index is less than or equal to half the number of subband indices included in the subband index set, and satisfies at least one of the following: When the number is equal to 2, the first step length of the sub-band index is equal to half of the number; When the number is greater than 2, the first step length of the sub-band index is less than half of the number; The first step length of the subband index is determined based on the quotient between the number and a first parameter, wherein the value of the first parameter is greater than 2, and wherein the first parameter is a conventional value and / or a value determined based on the received signaling information.

12. The method according to any one of claims 4-10, characterized in that... At least one of the following: In two consecutive frequency domain transmissions of the signal, the step size of the sub-band index is the first step size; In two consecutive frequency domain transmissions of the signal, the step size of the subband index transition is less than or equal to half the number of subband indices included in the subband index set. In two consecutive transitions of the subband index, the transition step size of the subband index is less than or equal to half the number of subband indices included in the subband index set, wherein the time during which the subband index remains unchanged includes one or more frequency domain transmission opportunities of the signal.

13. The method according to claim 3, characterized in that, The multiple levels in the multi-level structure include levels in the second-level set, and the rules for time-domain variation include at least one of the following: The temporal jump duration of the sub-band index of the level in the first level set is less than the temporal jump duration of the sub-band index of the level in the second level set; During the frequency hopping process of the signal, the subband index of the level in the first level set is traversed once at different times, and then the subband index of the level in the second level set jumps once. The time-domain transition step size of the sub-band index of the first level in the first level set includes a first step size, and the time-domain transition step size of the sub-band index of the second level in the second level set includes a second step size. The first step size is less than half the number of sub-band indexes included in the sub-band index set corresponding to the first level, and the second step size is greater than or equal to half the number of sub-band indexes included in the sub-band index set corresponding to the second level. When the first level set includes multiple levels, the larger the level in the first level set, the shorter the time for the sub-band index jump of that level; When the first level set includes multiple levels, the smaller the level in the first level set, the shorter the time of the sub-band index jump of that level; When the second level set includes multiple levels, the smaller the level in the second level set, the shorter the time for the sub-band index jump of that level.

14. The method according to claim 13, characterized in that, The first level set or the second level set satisfies at least one of the following: The first level set includes the highest level in the second level set; Each level in the first level set is greater than the highest level in the second level set; Each level in the first level set is greater than or equal to the highest level in the second level set; The first level set and the second level set include one or more of the same levels; The first level set and the second level set include different levels; The first set of levels includes the largest one or more levels among the multiple levels; The second level set includes sub-bands of all levels in the multi-level set; Each level in the second level set is less than the maximum level in the first level set and is greater than or equal to a predetermined value.

15. The method according to any one of claims 1 to 14, characterized in that, The multi-level structure also includes levels in a third-level set, which do not belong to the first-level set or the second-level set; and the sub-band index of the levels in the third-level set does not change during the frequency hopping process.

16. The method according to claim 3 or any one of 13-15, characterized in that, When the first level set only includes the largest level B-1 in the multi-level structure, the sub-band index n of the largest level B-1 b Determine based on at least one of the following formulas: (F b,1 (n) SRS,1 )+k)modN b ; (F b,1 (n) SRS,1 )+F b,2 (n) SRS )+k)modN b ; F b,1 (n) SRS,1 )modN b ; Where n SRS,1 A counter related to the frequency domain transmission timing of the signal, n SRS Another counter related to the frequency domain transmission timing of the signal, wherein in the n SRS During a period of time when it remains unchanged, the n SRS,1 n remains unchanged SRS =n SRS,1 , or the n SRS,1 It changed once or multiple times, and / or n RRS According to n SRS,1 Confirmed; F b,1 (n SRS,1 ) is n SRS,1 The function, F b,2 (n SRS ) is n SRS The function; k is a positive integer greater than or equal to 0, k is a fixed value or determined according to the signaling information received from the second node, and B-1 is B. SRS Or, the level B-1 is a virtual level B. SRS +1, then N b =P F Level B SRS One sub-band in +1 is a partial PRB set; B SRS It is determined based on the received signaling information.

17. The method according to claim 16, characterized in that, The F b,1 (n SRS,1 ( ) satisfies at least one of the following; F b,1 (n) SRS,1 )=a b,1 *(n SRS,1 modZ b ); Z b Greater than or equal to Q, or Z b Less than or equal to N b , z b,1 c is a positive integer greater than or equal to 2. b It is 1 or 0; a b,1 For less than or equal to N b A positive integer; or a b,1 =N b / z b,1 Q is a positive integer greater than or equal to 1, and / or Q is the number of consecutive transitions of the subband index in level B-1, wherein the consecutive transitions occur during consecutive frequency domain transmission opportunities of the reference signal; b max,A1 =B-2,b min,A1 =b max,A1 .

18. The method according to claim 16 or 17, characterized in that, The F b,2 (n SRS ( ) satisfies at least one of the following: Where Q is a positive integer greater than or equal to 1, and S / Q is less than or equal to Z. b positive integers, z b Greater than or equal to 1.

19. The method according to claim 17 or 18, characterized in that, The sub-band index n b It must satisfy at least one of the following characteristics: Among them, F b,2 (n SRS ) and F b,4 (n SRS,1 ) are respectively n SRS ,n SRS,1 The function.

20. The method according to claim 19, characterized in that, The F b,2 (n SRS ( ) satisfies at least one of the following: in or f(n) SRS ) = n SRS Conditions one and two are based on V b W b Confirmed, V b Less than or equal to N b a b c is a positive integer greater than or equal to 1. b It is 1 or 1; z b b is a positive integer greater than or equal to 1; min,A2 =b hop W b For less than N b positive integers; e b A positive integer greater than or equal to 1. z b e is a fixed value or a value determined based on received signaling information. b It is a fixed value or a value determined based on the received signaling information.

21. The method according to any one of claims 1 to 20, characterized in that, The signal includes at least one of the following: uplink detection reference signal, uplink data channel signal, uplink control channel signal, uplink demodulation reference signal, uplink random access signal, downlink measurement reference signal, and downlink demodulation reference signal; And / or, Each level in the multi-level structure corresponds to a frequency domain sub-band size occupied by the signal; and / or The smaller the level b in the multi-level structure, the longer the length of a frequency domain subband of that level.

22. The method according to any one of claims 1 to 21, characterized in that, The method further includes: Receive a first signaling from the second node, the first signaling including parameters for determining at least one of the following: relevant information of the first level set, relevant information of the second level set, relevant information of the second level set, the first parameter, the first step length, the second step length, the third step length, and selection information of the transition rule.

23. The method according to any one of claims 7, 10, or 16-20, characterized in that, The method further includes: The following n is determined based on at least one of the following: SRS,b,3 n SRS,1 ,n SRS The index l′ of the time-domain symbol containing the signal in a series of consecutive time-domain symbols including the signal, the number s of the time-division port groups corresponding to the signal, the number R of time-domain symbols included in a single frequency-domain transmission of the signal, and the number of time slots included in a frame. The frame number n f The time slot index where the signal is located The period offset T of the signal odfset The number Q of frequency domain transmission opportunities of the signal included within the time when the sub-band index remains unchanged. b 1. The period T of the signal RS The number of consecutive time-domain symbols of the signal included in one period of the signal. Where different b corresponds to n SRS,b,3 They can be the same or different.

24. The method according to claim 23, characterized in that, n SRS,1 ,n SRS ,n SRS,b,3 At least one of them is determined according to at least one of the following: in, or Where Q, Q b,1 It is a positive integer greater than or equal to 1.

25. The method according to any one of claims 1-23, characterized in that, The step of transmitting the signal by frequency hopping according to the time-domain variation rule includes: Based on the aforementioned time-domain variation rules, the number of physical resource blocks m included in a sub-band of each of the B levels. SRS,b The number of subcarriers included in a physical resource block And the largest level B-1 among the various levels, determine the set of physical resource blocks occupied by the signal in each frequency domain transmission opportunity; The signal is sent to the defined set of physical resource blocks; One of the frequency domain transmission timings includes one or more time domain symbols, and in the case of multiple time domain symbols, the signal occupies the same set of physical resource blocks on the multiple time domain symbols.

26. The method according to claim 21, characterized in that, according to Determine the set of physical resource blocks occupied by the signal in each frequency domain transmission opportunity, wherein: in, The first offset is the offset of the frequency domain position occupied by the signal relative to the starting frequency domain position of a sub-band of the lowest level b=0 in the multi-level structure, n. b This is the subband index of a subband of level b.

27. A communication method, characterized in that, Applied to the second node, the method includes: Determine the multi-level structure corresponding to the frequency domain resources of the signal, wherein the multi-level structure includes B levels; wherein a sub-band of level b-1 includes N levels of level b. b N sub-bands, where b = 1, ..., B-1; B is a positive integer greater than or equal to 2; b It is a positive integer greater than or equal to 1; Determine the time-domain variation rules of the sub-band index for each of the B levels; The signal from the first node is received according to the time-domain variation rule, and the signal is a signal sent by the first node in a frequency-hopping manner according to the time-domain variation rule.

28. The method according to claim 27, characterized in that, The B levels include at least a first level and a second level. The time-domain change rules include: both the sub-band index of the first level and the sub-band index of the second level change with time, the change duration of the sub-band index of the first level is less than the change duration of the sub-band index of the second level, wherein the frequency domain length of a sub-band of the first level is less than or equal to the frequency domain length of a sub-band of the second level, and / or the level value b of the first level is greater than the level value b of the second level.

29. The method according to claim 27 or 28, characterized in that, The multi-level structure includes one or more third levels, and the time-domain change rule includes: for each third level, the time-domain jump step size of the sub-band index of the third level includes a first step size, which is less than or equal to half the number of sub-band indices included in the sub-band index set.

30. A communication device, characterized in that, include: Memory and processor; Memory and processor are coupled; The memory is used to store instructions that can be executed by the processor; When the processor executes the instruction, it performs the method as described in any one of claims 1-26, or the method as described in any one of claims 27-29.

31. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1-26, or the method as described in any one of claims 27-29.

32. A computer program product, characterized in that, The computer program product includes computing technology program instructions, which, when executed by a processor, implement the method as described in any one of claims 1-26, or the method as described in any one of claims 27-29.

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