Synchronization signal transmitting method, electronic device, storage medium, and program product

Abstract

Embodiments of the present disclosure relate to the technical field of communications, and provide a synchronization signal transmitting method, a device, a storage medium, and a program product, capable of reducing interference during inter-cell synchronization signal transmission. The method comprises: receiving a synchronization signal, wherein the synchronization signal is sent on the basis of an association relationship, the association relationship includes an association relationship between a plurality of first resource indexes of the synchronization signal and a plurality of spatial domain resource indexes of the synchronization signal, and the association relationship is determined on the basis of a second resource index.

Description

Synchronization signal transmission method, electronic device, storage medium and program product

[0001] The present disclosure claims priority to Chinese Patent Application No. 202411341033.2, filed on September 24, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of communication, and in particular to a synchronization signal transmission method, device, storage medium and program product. BACKGROUND

[0003] In a wireless communication system, a synchronization signal can be transmitted by using a beam, so as to increase the coverage of the synchronization signal. However, when multiple cells transmit the synchronization signal by using the beam, the synchronization signals between the cells will interfere with each other during transmission. The detection time of different beams in the same cell is also different, so the access time and switching time corresponding to different beams are also not balanced. SUMMARY

[0004] Embodiments of the present disclosure provide a synchronization signal transmission method, device, storage medium and program product, which can reduce the interference between the synchronization signals of different cells.

[0005] In one aspect, a synchronization signal transmission method is provided, comprising: receiving a synchronization signal, the synchronization signal being transmitted based on an association relationship, the association relationship comprising an association relationship between a plurality of first resource indexes of the synchronization signal and a plurality of spatial domain resource indexes of the synchronization signal, the association relationship being determined according to a second resource index.

[0006] In another aspect, a synchronization signal transmission method is provided, comprising: obtaining, according to a second resource index, an association relationship between a plurality of first resource indexes of a synchronization signal and a plurality of spatial domain resource indexes of the synchronization signal; and transmitting the synchronization signal based on the association relationship.

[0007] In still another aspect, a synchronization signal transmission apparatus is provided, comprising: a receiving unit configured to receive a synchronization signal, the synchronization signal being transmitted based on an association relationship, the association relationship comprising an association relationship between a plurality of first resource indexes of the synchronization signal and a plurality of spatial domain resource indexes of the synchronization signal, the association relationship being determined according to a second resource index.

[0008] In still another aspect, a synchronization signal transmission apparatus is provided, comprising: an obtaining unit and a transmitting unit; the obtaining unit is configured to obtain, according to a second resource index, an association relationship between a plurality of first resource indexes of a synchronization signal and a plurality of spatial domain resource indexes of the synchronization signal; and the transmitting unit is configured to transmit the synchronization signal based on the association relationship.

[0009] In a further aspect, an electronic device is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is configured to store a computer program; the processor is configured to implement the synchronization signal transmission method in any of the above aspects when executing the computer program.

[0010] In a further aspect, a computer readable storage medium is provided, and the computer readable storage medium stores computer program instructions, and the computer program instructions are configured to implement the synchronization signal transmission method in any of the above aspects when executed by a processor.

[0011] In a further aspect, a computer program product is provided, and the computer program product comprises computer program instructions, and the computer program instructions are configured to implement the synchronization signal transmission method in any of the above aspects when executed by a processor.

[0012] The embodiments of the present disclosure disclose that the first node can receive the synchronization signal transmitted based on the association relationship. Since the association relationship is determined according to the second resource index, the association relationship between the plurality of first resource indexes and the plurality of spatial domain resource indexes of the synchronization signal, when transmitting the synchronization signal, it is not necessary to transmit and receive according to the fixed association relationship, so as to randomize the interference of the inter-cell synchronization signal and reduce the interference of the inter-cell synchronization signal. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings needed to be used in some embodiments of the present disclosure. Obviously, the drawings described in the following are only some of the drawings of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0014] FIG. 1 is a schematic diagram of transmitting synchronization signals based on beams according to some embodiments of the present disclosure;

[0015] FIG. 2 is a schematic diagram of transmitting synchronization signals by different cells according to some embodiments of the present disclosure;

[0016] FIG. 3 is a communication system architecture diagram according to some embodiments of the present disclosure;

[0017] FIG. 4 is a flow diagram of a synchronization signal transmission method according to some embodiments of the present disclosure;

[0018] FIG. 5 is a schematic diagram of transmitting synchronization signals by using different mapping relationships between time domain resources and spatial domain resources in different synchronization signal periods according to some embodiments of the present disclosure;

[0019] FIG. 6 is a schematic diagram of the first type of parameters and the second type of parameters of a PCI group according to some embodiments of the present disclosure;

[0020] FIG. 7 is a schematic diagram of a first resource being a combination of code domain and time domain resource according to some embodiments of the present disclosure;

[0021] FIG. 8 is a schematic diagram of transmitting a synchronization signal on a partial candidate first resource according to some embodiments of the present disclosure;

[0022] FIG. 9 is a schematic diagram of a first resource index set occupied by a same spatial domain resource index set in different synchronization signal periods according to some embodiments of the present disclosure;

[0023] FIG. 10 is a schematic diagram of a first resource index set occupied by a same spatial domain resource index set in different synchronization signal periods according to some embodiments of the present disclosure;

[0024] FIG. 11 is a schematic diagram of a flow of transmitting a synchronization signal according to some embodiments of the present disclosure;

[0025] FIG. 12 is a schematic diagram of a correspondence between a spatial domain resource and a PRACH resource pool according to some embodiments of the present disclosure;

[0026] FIG. 13 is a schematic diagram of a correspondence between a spatial domain resource and a PRACH resource pool according to some embodiments of the present disclosure;

[0027] FIG. 14 is a schematic diagram of a correspondence between a spatial domain resource and a detection opportunity of a common control channel according to some embodiments of the present disclosure;

[0028] FIG. 15 is a schematic diagram of a correspondence between a spatial domain resource and a detection opportunity of a common control channel according to some embodiments of the present disclosure;

[0029] FIG. 16 is a schematic diagram of a flow of a synchronization signal transmission method according to some embodiments of the present disclosure;

[0030] FIG. 17 is a schematic diagram of a structure of a communication apparatus according to some embodiments of the present disclosure;

[0031] FIG. 18 is a schematic diagram of a structure of a communication apparatus according to some embodiments of the present disclosure;

[0032] FIG. 19 is a schematic diagram of a structure of a communication apparatus according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0033] The technical solutions in the present disclosure will be described clearly and completely below with reference to the drawings in the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present disclosure.

[0034] It should be noted that in the present disclosure, the words "exemplary" or "for example" are used to mean "an example of" or "an example, only. Any embodiment or design solution described in the present disclosure as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or design solutions. Rather, the use of the words "exemplary" or "for example" is intended to present concepts in a particular manner.

[0035] Hereinafter, the terms "first", "second" are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0036] In the description of the present disclosure, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this document is only a description of the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, "at least one" means one or more, and "multiple" means two or more.

[0037] In the 5th generation mobile communication technology (5G) system, beam transmission of synchronization signals can be used to increase the coverage of synchronization signals at low frequencies and allow synchronization signals to be transmitted at analog signals at high frequencies, so that synchronization signals can reach cell coverage. However, in the 5G new radio (NR) system, when multiple cells transmit synchronization signals through beams, there are problems such as large spatial domain interference of synchronization signals, unequal access time and switching time of different beams, and with the increase of the number of antennas and communication carrier frequencies, the number of beams used by synchronization signals will further increase, and the above problems will be more prominent, which is a technical problem that needs to be solved at present.

[0038] For example, FIG. 1 shows a schematic diagram of transmitting a synchronization signal based on a beam. As shown in FIG. 1, a base station transmits a synchronization signal through four transmission beams (S0, S1, S2, S3) on four time domain resources (SS0, SS1, SS2, SS3) in each synchronization signal period. Each time domain resource includes 128 resource elements (REs) on each of two time domain symbols. In different synchronization signal periods, the synchronization signals transmitted on the same time domain resource index satisfy a quasi-co-location relationship. For example, in different synchronization signal periods, the base station transmits a synchronization signal on the same time domain resource index using the same beam, such as the synchronization signal periods n and n+1. For a time domain resource index i (i is any one of 0, 1, 2, and 3), the base station transmits a synchronization signal on the time domain resource index i, which satisfies the quasi-co-location relationship.

[0039] In a possible implementation, the synchronization signals transmitted on multiple time domain resources in one synchronization signal period are the same, for example, a synchronization signal corresponding to one physical cell index (PCI). The synchronization signals with the same time domain resource index under different PCIs have no association in the spatial domain resource. For example, the synchronization signals with the same time domain resource index under different PCIs do not satisfy the quasi-co-location relationship, that is, the quasi-co-location relationship of the synchronization signals is only satisfied in the same cell.

[0040] However, transmitting the synchronization signal in the manner of FIG. 1 can cause relatively large synchronization signal interference. Because the association between the time domain resource and the spatial domain resource does not change in different synchronization signal periods, if synchronization signal interference occurs between cells, the synchronization signal interference will exist all the time, thereby causing relatively large synchronization signal interference between cells. As shown in FIG. 2, the synchronization signal interference between cell 1 and cell 2 does not change over time, but exists all the time. In a severe interference case, the terminals of the two cells cannot access the network. Unless cell 1 and cell 2 negotiate, the synchronization signal beams transmitted on the overlapping resources have relatively small interference. However, this method increases the amount of negotiation between cells, which is not conducive to increasing the base stations or transmission nodes in the network on demand, and brings a great burden to network deployment and expansion.

[0041] To this end, the embodiment of the present disclosure provides a synchronization signal transmission method, and a first node can receive a synchronization signal transmitted based on an association relationship. Because the association relationship is determined according to a second resource index, and the association relationship includes the association relationship between multiple first resource indexes of the synchronization signal and multiple spatial domain resource indexes, when transmitting and receiving the synchronization signal, it is not necessary to transmit and receive according to a fixed association relationship, thereby randomizing the interference between the synchronization signals of the cells and reducing the interference between the synchronization signals of the cells.

[0042] The synchronization signal transmission method provided by the embodiments of the present disclosure can be applied to systems of various communication modes. For example, the synchronization signal transmission provided by the embodiments of the present disclosure can be applied to systems including but not limited to a long term evolution (LTE) system, various versions based on LTE evolution, a 5th generation mobile communication technology (5G) system, a future mobile communication network (for example, a 6G mobile communication network), or a multi-communication fusion system, and the like. In addition, the synchronization signal transmission method provided by the embodiments of the present disclosure can also be applied to future-oriented communication systems and the like.

[0043] For example, the synchronization signal transmission method described above can be applied to a communication system as shown in FIG. 3. As shown in FIG. 3, the communication system includes a first node 301 and a second node 302.

[0044] The first node 301 and the second node 302 are communicatively connected. The first node 301 can be a terminal, an Internet of Things device, a receiving node, and the like, and the second node 302 can be a base station, a transmitting antenna, and the like. In another communication mode, such as a sidelink or a V2X communication scenario, the first node is a first terminal, a first device, and the like, and the second node is a second terminal, a second device, and the like.

[0045] In the embodiments of the present disclosure, the second node 302 can determine an association relationship between the first resource index of the synchronization signal and the spatial domain resource index of the synchronization signal according to the second resource index. Then, the second node 302 can transmit the synchronization signal based on the association relationship. The first node 301 can receive the synchronization signal. In this way, the association relationship of the synchronization signal is no longer fixed, but changes with the second resource, so as to randomize the interference of the inter-cell synchronization signal and reduce the interference of the inter-cell synchronization signal.

[0046] In some embodiments, the terminal can be a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); can also be deployed in the air (such as airplanes, balloons and satellites, etc.). The terminal can be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The embodiments of the present disclosure do not limit the application scenarios. The terminal can also be referred to as a user, a user equipment (UE), an access terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a UE terminal, a wireless communication device, a UE agent or a UE apparatus, etc. The embodiments of the present disclosure do not limit this.

[0047] In some embodiments, the base station can be a base station in long term evolution (LTE), long term evolution advanced (LTEA) or evolutional node B (eNB or eNodeB), a base station device in a 5G network, or a base station in a future communication system, etc. The base station can include various macro base stations, micro base stations, home base stations, wireless remote devices, reconfigurable intelligent surfaces (RISs), routers, wireless fidelity (WIFI) devices, or various network side devices such as primary cells and secondary cells, etc.

[0048] It should be noted that FIG. 3 is only an exemplary framework diagram, the number of devices included in FIG. 3, and the names of each device are not limited, and in addition to the devices shown in FIG. 3, the communication system can also include other devices, such as relay nodes, etc.

[0049] The application scenarios of the embodiments of the present disclosure are not limited. The system architecture and business scenarios described in the embodiments of the present disclosure are used to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art can know that, with the evolution of network architecture and the appearance of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0050] The synchronization signal transmission method provided by the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0051] The synchronization signal transmission method provided by the embodiments of the present disclosure can be applied to the first node 301 in the communication system shown in FIG. 3. FIG. 4 shows a flowchart of a synchronization signal transmission method one, as shown in FIG. 4, the synchronization signal transmission method includes the following S401.

[0052] S401, the first node receives a synchronization signal.

[0053] The synchronization signal is transmitted based on an association relationship. The association relationship is an association relationship between a first resource index of the synchronization signal and a spatial domain resource index of the synchronization signal determined according to a second resource index. The second resource index can be used to index the period of the synchronization signal, and the first resource can include a time domain resource. One second resource where the synchronization signal is located includes at least one first resource. For example, one synchronization signal period includes multiple time domain resources.

[0054] In one possible implementation, in different synchronization signal periods, the time domain resource index and the spatial domain resource index have a fixed association relationship. In the case of inter-cell synchronization signal interference, since the association relationship is fixed, the interference will always exist and cannot reduce the interference of the synchronization signal. To solve this problem, the association relationship between the first resource index and the spatial domain resource index can be unbound, and one synchronization signal period corresponds to one (association relationship between the first resource index and the spatial domain resource index). The second node can determine the association relationship between the first resource index and the spatial domain resource index based on the second resource index, and transmit the synchronization signal based on the association relationship. In this way, in the case of inter-cell synchronization signal interference, since the association relationship corresponding to different synchronization signal periods is no longer fixed, the originally interfered synchronization signal no longer interferes, thereby realizing interference randomization and reducing inter-cell synchronization signal interference. Optionally, the association relationship corresponding to different synchronization signal periods can be the same or different, and the synchronization signal period can be preconfigured or indicated based on indication information. The association relationship can also be pre-agreed or determined according to the indication information indicated by the second node.

[0055] In addition, while the interference of the synchronization signals between cells is reduced, the first resource index corresponding to different beams (i.e., beams corresponding to the spatial domain resource index) in different synchronization signal periods is different, so that the beams preferentially detected in different synchronization signal periods are different, thereby solving the problem of uneven access duration and switching duration of different wavelengths.

[0056] In a possible implementation, one transmission opportunity is one first resource. For example, in one synchronization signal period, one transmission opportunity is one time domain resource. As shown in FIG. 5, in the case where the second resource is a synchronization signal period, a system message time window includes multiple synchronization signal periods, and each synchronization signal period includes multiple transmission opportunities (SS0, SS1, SS2, and SS3). Different synchronization signal periods correspond to different association relationships (for example, the association relationship between the transmission opportunity and the spatial domain resource index). The spatial domain resource index of the transmission opportunity SS0 in the synchronization signal period n is different from that of the transmission opportunity SS0 in the synchronization signal period n+10, and thus the transmitted beams are also different, that is, the transmission beam of the transmission opportunity SS0 in the synchronization signal period n is beam 0, and the transmission beam of the transmission opportunity SS0 in the synchronization signal period n+10 is beam 2. Therefore, on different synchronization signal periods, the synchronization signals on the same first resource index do not necessarily satisfy the quasi-co-location relationship, and whether the quasi-co-location relationship is satisfied needs to be determined according to whether the corresponding spatial domain resources are the same. If the corresponding spatial domain resources are the same, the quasi-co-location relationship is satisfied, and if the corresponding spatial domain resources are different, the quasi-co-location relationship is not satisfied. SS0 is the index of the first resource of the synchronization signal.

[0057] The above features will be described below:

[0058] For the first resource corresponding to the first resource index:

[0059] The first resource is used to index at least one of the following: a time domain resource of a synchronization signal, a frequency domain resource of a synchronization signal, and a code domain resource of a synchronization signal.

[0060] In addition to being a time domain resource, the first resource can also be another resource (for example, a frequency domain resource or a code domain resource). In the case where the synchronization signal is transmitted based on time division, the above association relationship is the association relationship between the time domain resource index and the spatial domain resource index. In the case where the synchronization signal is transmitted based on frequency division or code division, the above association relationship is the association relationship between the frequency domain resource index or the code domain resource and the spatial domain resource index. Therefore, the first resource index can index the frequency domain resource or the code domain resource. Correspondingly, in the case where the synchronization signal is transmitted based on time division and frequency division, the first resource index can be used to index the combination of the time domain resource and the frequency domain resource, and so on.

[0061] In a possible implementation, the first resource includes a code domain resource, the code domain resource includes a cell group index, the parameter values of the first type of parameters of at least one cell index in one cell group index are the same, and the parameter values of the second type of parameters of each cell index in one cell group index are determined respectively. For example, when the code domain resource includes a PCI, one PCI group corresponds to one logical cell, the configuration values of the first type of parameters of each PCI in one PCI group are the same, and the configuration values of the second type of parameters of each PCI in one PCI group are different. As shown in FIG. 6, the PCI group includes PCI1, PCI2, and PCI3, the configuration values of the first type of parameters of the three PCIs are the same, and the configuration values of the second type of parameters of the three PCIs are different. The configuration value of the first type of parameters of PCI1 is a first set of configuration values, the configuration value of the second type of parameters of PCI2 is a second set of configuration values, and the configuration value of the third type of parameters of PCI3 is a third set of configuration values.

[0062] In the case where the first resource includes a time domain resource and a code domain resource, the transmission opportunity (that is, the first resource) of one synchronization signal is a combination of the time domain resource and the code domain resource of one synchronization signal, that is, two synchronization signals can be transmitted through different code domain resources on one time domain resource, forming two transmission opportunities of the synchronization signals, and there are multiple transmission opportunities of the synchronization signals on the same time domain resource, and different transmission opportunities correspond to different code domain resources of the synchronization signals. Or the synchronization signals are transmitted through different time domain resources on the same code domain resource. As shown in FIG. 7, a system message time window includes multiple synchronization signal periods, and in each synchronization signal period, all candidate transmission opportunities are occupied to transmit the synchronization signal. Only in different synchronization signal periods, the association between the transmission opportunity index and the space domain resource index is different. The first resource of the synchronization signal is a combination of the time domain resource of one synchronization signal and the code domain resource of the synchronization signal, that is, the first resource is one code domain resource on one time domain resource, and different transmission opportunities are distinguished by at least one of the time domain resource and the code domain resource of the synchronization signal. For example, the transmission opportunities SS0-1 in the synchronization signal period n are a combination of a time domain resource and a code domain resource, and the beams emitted by the transmission opportunities are beams {0, 1}.

[0063] The code domain resource of the synchronization signal comprises a sequence resource of the synchronization signal. The code domain resource can be the cell index or a code domain resource different from the cell index, for example, the code domain resource is a PCI in the case where one PCI constitutes one cell. In the case where one PCI constitutes one cell, one PCI corresponds to multiple synchronization signal sequences on a first resource. For example, the multiple synchronization signal sequences are multiplied by a frequency domain orthogonal code (FD-OCC) on a same synchronization signal sequence, for example, the same synchronization signal sequence is obtained according to the PCI, x0(n)=y(n mod C), x(n)=x0(n)z(n), n=0, 1,..N-1, wherein x0(n) is the same synchronization signal sequence obtained according to the PCI. N is a synchronization signal resource element (RE) index, C is a positive integer greater than or equal to 1, y(j), j=0, 1...C-1 is an orthogonal sequence with a length of C, and z(n) can be z(n)=e j2πan , A and B are positive integers or 0≤α≤1 is a real number less than or equal to 0.

[0064] In FIGS. 5 and 7, the first node transmits the synchronization signal on each of the multiple candidate first resources of the synchronization signal. In another embodiment, as in FIG. 8, the first node selects 6 candidate spatial resources from the 8 candidate spatial resources in the synchronization signal period n to transmit beams, and the remaining spatial resources (SS6-SS7) do not transmit beams, so that only 6 candidate spatial resources are occupied.

[0065] For the second resource corresponding to the second resource index:

[0066] The second resource index is used to index at least one of the following: a period index of the synchronization signal, a half-frame index, and a frame index. The half-frame index and the frame index can be the frame index of the synchronization signal or can not be the frame index of the synchronization signal. The half-frame index, for example, determines the association relationship according to the frame index and the half-frame index, but there is no synchronization signal on some frames or half-frames. Since the half-frames and the frames of the synchronization signal have periodicity, the half-frames and the frames of the synchronization signal can also be referred to as the periods of the synchronization signal.

[0067] In addition, the second resource can be a cell index (e.g., PCI) or a cell group index (e.g., PCI group) in addition to the period of the synchronization signal. Since the association corresponding to each cell is fixed, when the synchronization signals between cells interfere with each other, the association between the first resource and the spatial resource can be changed based on the cell, so that the interference between the synchronization signals of the cells can be reduced. Alternatively, different PCIs correspond to different association relationships, and the association between the multiple first resources of the synchronization signal and the multiple spatial resources can be determined based on at least one of the following: the second resource index in which the synchronization signal is located, the PCI, or the PCI group. For example, the first node can determine the above association relationship based on the second resource index and the PCI, that is, the above mapping relationship is different for different PCIs.

[0068] In a possible implementation, the association relationship is determined based on the cell index or the cell group index and the second resource index. At this time, the second resource is the period of the synchronization signal, and the first node can determine the above association relationship based on the period of the synchronization signal and the cell index (or the cell group index). In this way, the association relationship of each cell in each period is no longer fixed, and the association relationship of multiple cells in the same period changes, so that the interference between the synchronization signals of the cells can be randomized, thereby reducing the interference between the synchronization signals of the cells.

[0069] In another possible implementation, the second resource can also be a frequency domain resource of the synchronization signal, wherein multiple first resources are included in one second resource, and the association relationship can be different for different second resources, that is, the association relationship can be different in different frequency domain resources of the synchronization signal.

[0070] For the spatial resource corresponding to the spatial resource index:

[0071] The spatial resource is used to index at least one of the following: a transmission beam (of the second node), a reception beam (of the first node), a channel large-scale parameter, and a quasi-co-location reference signal.

[0072] The channel large-scale parameter includes at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, spatial reception parameter, and average gain.

[0073] In a possible implementation, the synchronization signals on the two first resources associated with the same spatial domain resource index satisfy the quasi co-location relationship in different second resources. Optionally, the synchronization signals satisfying the quasi co-location relationship also need to satisfy at least one of the following: the same cell index, the same cell group index, the same frequency domain resource, the same code domain resource, and the same transmission opportunity group.

[0074] For example, as shown in FIG. 5, the spatial domain resource index corresponding to the transmission opportunity SS2 in the synchronization signal period n is the same as the spatial domain resource index corresponding to the transmission opportunity SS0 in the synchronization signal period n+10, that is, the beams are both beam 2, and therefore, the synchronization signal transmitted by the transmission opportunity SS2 in the synchronization signal period n and the synchronization signal transmitted by the transmission opportunity SS0 in the synchronization signal period n+10 satisfy the quasi co-location relationship.

[0075] It should be noted that one physical cell can include multiple synchronization signal transmission opportunity groups, and different synchronization signals are in different synchronization signal transmission opportunity groups from different transmitting antenna nodes (for example, antenna ports), for example, one physical cell includes multiple transmit receive points (TRPs).

[0076] (transmit receive point,TRP)。

[0077] For example, the association relationship can be determined by a predetermined formula, for example, the spatial domain resource index can be determined based on at least one of the following:

[0078] spatial domain resource index=f1(transmission opportunity index, second resource index);

[0079] spatial domain resource index=f2(transmission opportunity index, second resource index, PCI);

[0080] spatial domain resource index=f3(transmission opportunity index, second resource index, PCI group index);

[0081] spatial domain resource index=f4(transmission opportunity index, g1(second resource index));

[0082] spatial domain resource index=f5(transmission opportunity index, g2(second resource index, PCI));

[0083] spatial domain resource index=f6(transmission opportunity index, g3(second resource index, PCI group index));

[0084] wherein the spatial domain resource index is determined based on the transmission opportunity index (i.e., the first resource index) and the second resource index, and further based on at least one of the PCI, the PCI group index. g1, g2, g3 are random sequence functions, the random sequence is determined by the input value of the function, for example, the initial value of g1 (second resource index) is determined by the second resource index, the initial value of g2 (second resource index, PCI) is determined by the second resource index and the PCI (or g2 is a group of sequences whose initial value is determined by the PCI, g2 (second resource index, PCI) is the element value corresponding to the second resource index in the group of sequences), the initial value of g3 (second resource index, PCI group index) is determined by the second resource index and the index of the PCI group (or g3 is a group of sequences whose initial value is determined by the index of the PCI group, g3 (second resource index, PCI group index) is the element value corresponding to the second resource index in the group of sequences). g1, g2, g3 determine one or a group of random values from the initial value, the initial value can also be referred to as the function input value. f1, f2, f3, f4, f5, f6 are functions for determining the spatial domain resource index corresponding to each transmission opportunity index. The input parameters of f3, f6 include the PCI group index. For the following two considerations, on the one hand, considering the case that one PCI group corresponds to one logical cell in the future, on the other hand, in order to make the association relationship hopping pattern of multiple PCIs consistent, for example, the network plans a few pairs of spatial domain resources of adjacent cells, for example, the spatial domain resource i of cell 0 and the spatial domain resource i of cell 1 interfere small, but when i is not equal to j, the interference between the spatial domain resource i of cell 0 and the spatial domain resource j of cell 1 is relatively large. Therefore, the spatial domain resource i of cell 0 and the spatial domain resource i of cell 1 always occupy overlapping transmission resources. That is, the mapping relationship between the transmission opportunity and the spatial domain resource of the synchronization signal of the two cells changes with the synchronization signal period, but the spatial domain resource indexes corresponding to the overlapping resources of the two cells are the same. The form of the mapping relationship (i.e., the association relationship) can be predetermined, and / or the form of the mapping relationship is determined according to at least one of the following: the PCI, the information notified in the physical broadcast channel (PBCH).

[0085] In an example, determining the association relationship according to the second resource index includes determining the association relationship according to the second resource index and a predetermined value, so that the association relationships corresponding to multiple consecutive second resources are the same, thereby reducing the complexity of the terminal detecting the synchronization signal. For example, according to at least one of the following: floor (second resource / predetermined value), mod (second resource index, predetermined value), wherein floor (y) is the maximum integer less than or equal to y. mod (m, n) is the remainder of m, n. For example, mod (7, 4) = 3.

[0086] In some embodiments, in the at least two second resources corresponding to the at least two second resource indexes, the first resource indexes corresponding to the same spatial resource index are different.

[0087] In the second resources corresponding to the at least two second resource indexes, the patterns of the first resources corresponding to the multiple first resource indexes of the synchronization signal are the same. For example, the number of candidate transmission opportunities (i.e., first resources) included in each synchronization signal period (i.e., second resource) is the same, and the resource patterns occupied by the multiple candidate transmission opportunities in different synchronization signal periods are the same, which means that the resources occupied by the multiple candidate transmission opportunities have the same indexes in the resources included in one synchronization signal. For example, the synchronization signal period is 20 milliseconds (ms), and each synchronization signal period includes X candidate transmission opportunities, and the resource patterns occupied by the X candidate transmission opportunities in each period are the same. For example, the X candidate transmission opportunities occupy X time domain resources in 5 ms. In the nth synchronization signal period, the time domain symbols with indexes of {y, y+M, y+2*M, y+3M} in the third 5 ms of the 4 5 ms in the 20 ms period are occupied, where y is the starting symbol of the X time domain resources, and M is a positive integer. In the n+1th synchronization signal period, the time domain symbols with indexes of {y, y+M, y+2*M, y+3M} in the third 5 ms of the 4 5 ms in the 20 ms period are also occupied.

[0088] It should be noted that one synchronization signal period includes multiple candidate first resources, but the second node does not necessarily send a synchronization signal on each candidate first resource, but can select several candidate first resources to send a synchronization signal. In addition, the first node also does not receive a synchronization signal on each first resource, but receives a synchronization signal on the first resources informed by the second node. The second node can inform different first resource index sets (i.e., index sets of target first resources) to different first nodes, so that the first node receives a synchronization signal and / or determines a target parameter according to the first resource index set. The following will describe that the first node receives a synchronization signal according to the first resource, and the determination of the target parameter according to the first resource index set is similar.

[0089] In some embodiments, upon receiving the synchronization signal, the first node can first determine the index set of the target first resource in a synchronization signal period, for example, in the at least two second resources corresponding to the at least two second resource indexes, the index set of the target first resource is determined according to the association relationship, respectively, the target first resource belongs to the plurality of first resources corresponding to the plurality of first resource indexes. It should be understood that if the first resource is determined according to the index set of the first resource, the target first resource is the first resource used by the second node to transmit the synchronization signal in the plurality of candidate first resources in a synchronization signal period, and the first node can receive / detect the synchronization signal on part or all of the target first resource of the second node. If other target parameters are determined according to the index set of the first resource, the other signal (i.e., other signal) cannot occupy the target first resource, and / or the quasi co-location parameter of the other signal is obtained according to the synchronization signal on the target first resource. At this time, the target first resource can be understood as the first resource used by the second node to transmit the synchronization signal, or it can be understood that the target first resource is only used to obtain the above-mentioned target parameters, and whether the second node transmits the synchronization signal on the target first resource is not limited, which provides sufficient flexibility to the implementation scheme of the second node.

[0090] It should be noted that in the at least two second resources corresponding to the at least two second resource indexes, the number of target first resources occupied by the synchronization signal is the same, and the target first resource belongs to the plurality of first resources corresponding to the plurality of first resource indexes. If different first resources are distinguished by time division and frequency division, at this time, the number of target first resources is the same, but the number of time domain resources or frequency domain resources corresponding to the target first resource can be different, as shown in FIG. 10 and FIG. 8.

[0091] That is, in the at least two second resources corresponding to the at least two second resource indexes, the number of indexes of the target first resource in the index set of the target first resource occupied by the synchronization signal is the same, and the target first resource belongs to the plurality of first resources corresponding to the plurality of first resource indexes. Alternatively, the index set of the target first resource is different on the at least two second resources. The number of elements included in the index set of the target first resource is the same.

[0092] Then, the first node can determine the target parameter based on the index set of the target first resource.

[0093] Since the plurality of first resources including the synchronization signal in a second resource are candidate resources, that is, the second node selects at least one first resource from the plurality of first resources as the target first resource and transmits the synchronization signal based on the target first resource, and the remaining resources do not transmit the synchronization signal, therefore, the first node can receive the synchronization signal on the target first resource.

[0094] As an example, as shown in FIG. 5, each candidate first resource transmits a beam in one synchronization signal period (i.e., one second resource), and four beams are used to achieve cell coverage. However, as shown in FIG. 9, a system message time window includes multiple synchronization signal periods, and one synchronization signal period includes four transmission opportunities (i.e., there are four candidate first resources). The second node can select three of the four transmission opportunities to transmit beams (i.e., beams used to transmit synchronization signals), for example, transmission opportunity SS3 in synchronization signal period n does not transmit a beam, and transmission opportunity SS2 in synchronization signal period n+10 does not transmit a beam. Because the association between the spatial domain resource index and the transmission opportunity changes with the period, the three beams occupy different transmission opportunities in different periods. In period n, the three beams occupy transmission opportunities (SS0, SS1, SS2), and in period n+10, the three beams occupy transmission opportunities (SS0, SS1, SS3). In this way, the first node can transmit other signals on the transmission opportunities that do not transmit synchronization signals in one period, so that the inter-cell synchronization signal interference is randomized in the spatial domain and in the transmission opportunities, further reducing the inter-cell synchronization signal interference.

[0095] As another example, X candidate transmission opportunities in one synchronization signal transmission period correspond to X spatial domain resources. However, the second node can occupy all or part of the X candidate transmission opportunities, for example, a second node occupies X1 candidate transmission opportunities of the X candidate transmission opportunities, and X1 is a positive integer less than or equal to X. The X1 candidate transmission opportunity index set corresponds to an X1 spatial domain resource index set, but the X1 candidate transmission opportunity index set corresponds to an X1 transmission resource index set. The second node informs the first node of the spatial domain resource index set occupied by the synchronization signal by signaling and / or pre-configuration (or agreed rules). For example, there are X candidate spatial domain resource indexes, and the second node informs the first node of the X1 spatial domain resource index set occupied by the synchronization signal by X bits. The first node determines the index set of the first resource according to the X1 spatial domain resource indexes and the association.

[0096] As shown in FIG. 9, in synchronization signal period n, the second node informs the first node that the spatial domain resource index set occupied and / or transmitted by the synchronization signal is {0, 1, 2}. The first node and the second node further determine the index set of the first resource on each of the at least two second resources according to the association and the occupied spatial domain resource index set, so as to determine the transmission opportunity index set occupied by the synchronization signal in each synchronization signal period.

[0097] As shown in FIG. 8, the second node informs the first node that the synchronization signal occupies and / or transmits the spatial resource index set {0-5}. In the synchronization signal period n, the index set of the first resource is the transmission opportunity {0, 1, 2, 3, 4, 5}, and in the synchronization signal period n+10, the index set of the first resource is the transmission opportunity {0, 1, 2, 3, 4, 7}.

[0098] In some embodiments, another method for receiving a synchronization signal can include: first, determining a target spatial resource index set from a plurality of spatial resource indexes of the synchronization signal; the target spatial resource belongs to a plurality of spatial resources corresponding to the plurality of spatial resource indexes of the synchronization signal. Optionally, the target spatial resource index is the index of the target spatial resource occupied by the synchronization signal in the plurality of spatial resource indexes.

[0099] As shown in FIG. 10, a system message time window includes a plurality of synchronization signal periods, and in the synchronization signal period n, the second node informs the first node that the synchronization signal occupies and / or transmits the spatial resource index set {2-5}. The actual occupied spatial resource index set of the synchronization signal can be any one of the X candidate spatial resource index sets, and the minimum spatial resource index in the occupied spatial resource index set can not be 0.

[0100] It should be noted that the occupied spatial resource index of the synchronization signal can be continuous or discontinuous, and the embodiments of the present disclosure do not limit this.

[0101] Then, the target parameter is determined based on the index set of the target first resource.

[0102] In a possible implementation, when the second node informs the first node, it does not inform the first node of the transmission opportunity index set occupied by the synchronization signal in the X candidate transmission opportunity indexes, but the actual occupied spatial resource index set. Because the transmission opportunity index occupied by the synchronization signal is different in different periods, and the occupied spatial resource index set is the same in different periods, the transmission opportunity index set occupied by the synchronization signal in each synchronization signal period does not need to be informed, which can save signaling overhead.

[0103] In a possible implementation, the determination of the target parameter based on the index set of the target first resource specifically includes: determining the index set of the target first resource corresponding to the target spatial resource index from the plurality of first resource indexes based on the association relationship; and determining the target parameter based on the index set of the target first resource. That is, when the target parameter is determined based on the target spatial resource, the target first resource corresponding to the target spatial resource is first determined based on the association relationship, and then the target parameter is determined based on the target first resource.

[0104] In some embodiments, the synchronization signal is received on at least one first resource in the plurality of first resources according to a spatial domain resource corresponding to at least one spatial domain resource index. For example, the synchronization signal is received on a target first resource according to a target spatial domain resource.

[0105] In a possible implementation, as shown in FIG. 11, before S401, the method further includes:

[0106] S1101, the first node determines the association relationship. For example, the first node determines the association relationship according to a pre-configured association relationship.

[0107] The first node can first determine the association relationship, and receive the synchronization signal transmitted by the beam according to the target spatial domain resource index based on the association relationship on the target first resource.

[0108] Alternatively, after S401, the method further includes S1102, determining the association relationship. The first node can first receive the synchronization signal transmitted by the beam, and after determining the synchronization signal with the best measurement performance, detect the system message or the broadcast message sent by the base station, or determine the association relationship according to the PCI of the detected synchronization signal. The first node can determine the spatial domain resource index corresponding to the synchronization signal based on the association relationship, and further determine the beam with the best performance, so as to feed back the beam with the best performance to the second node, and / or determine other target parameters according to the association relationship.

[0109] It should be noted that the target parameters include at least one of the following: the synchronization signal as the measurement reference signal, the quasi-co-location reference signal of the target signal, the large-scale parameter of the target signal, the rate matching information of the target signal, the detection opportunity of the common control channel, the resource pool of the uplink access signal, the index set of the target first resource occupied by the synchronization signal, the resource of the uplink access signal, and the first resource set for receiving the synchronization signal. Optionally, the target signal can be any signal, or a signal specified by the second node. The first node transmits the target signal based on the determined target parameters. Similarly, the second node determines the target parameters based on at least one of the target spatial domain resource index and the target first resource index set, and transmits the target signal based on the determined target parameters.

[0110] In a possible implementation, before S1102, the method can further include S1103, the first node receives the system message.

[0111] The following will describe the target parameters respectively.

[0112] (1) The target parameters include the synchronization signal as the measurement reference signal

[0113] In the case that the synchronization signal is the measurement reference signal, the second node can inform the first node of a target spatial resource index set, and the first node can determine the target first resource index occupied by the synchronization signal according to the target spatial resource index set and the above association relationship, and measure the synchronization signal on the target first resource, so as to report the measurement result to the second node. In this case, the target parameter determined by the first node based on the target spatial resource index set is the measurement reference signal.

[0114] In the case that the target spatial resource index set informed by the second node includes multiple target spatial resource indexes, the first node selects at least one target spatial resource index from the multiple target spatial resource indexes for measurement. Optionally, the transmission beam corresponding to the selected at least one target spatial resource index is the transmission beam with the best performance to the first node, so that the first node reports the at least one target spatial resource index to the second node, so that the second node knows which transmission beam has good performance. For example, as shown in the above FIG. 10, the second node configures the synchronization signal with the spatial resource index 2 as the measurement reference signal. Then the synchronization signal corresponding to the spatial resource index 2 is the synchronization signal transmitted by the transmission opportunity SS2 in the synchronization signal period n and the synchronization signal transmitted by the transmission opportunity SS1 in the synchronization signal period n+1, and the synchronization signal on the transmission opportunity SS2 in the period n and the synchronization signal on the transmission opportunity SS1 in the period n+1 are measured respectively as the measurement result of the spatial resource index 2. At this time, the first resource index configured by the second node is not the first resource index, but the spatial resource index.

[0115] (2) The quasi co-location reference signal of the target signal or the large-scale parameter of the target signal

[0116] The first node determines the target spatial resource index occupied by the synchronization signal through the signaling configured by the second node or the agreed rule, and determines the target first resource where the synchronization signal is located according to the above association relationship. The synchronization signal is the quasi co-location reference signal of the target signal, that is, the quasi co-location reference signal is the synchronization signal on the transmission opportunity corresponding to the spatial resource index. At this time, the target parameter determined by the first node is the quasi co-location reference signal of the target signal.

[0117] The agreement rule includes determining a quasi-co-location reference signal of the target signal according to a spatial domain index selected by the first node when accessing in uplink. The target signal includes at least one of the following: a channel signal, a demodulation reference signal, and a measurement reference signal. The channel large-scale parameter of the target signal can be obtained according to the channel large-scale parameter of the spatial domain resource index. The channel large-scale parameter corresponding to one spatial domain resource index of the synchronization signal is obtained according to the synchronization signal on the first resource associated with the spatial domain resource index. As shown in the above FIG. 10, the channel large-scale parameter of the spatial domain resource index 2 is obtained according to the synchronization signal on the synchronization signal transmission opportunity SS2 in the synchronization signal period n and / or the synchronization signal on the synchronization signal transmission opportunity SS1 in the synchronization signal period n+1. That is, when the synchronization signal is used as the quasi-co-location reference signal of the target signal, the spatial domain resource index of the synchronization signal is configured instead of the transmission opportunity index. For example, the spatial domain resource index of the synchronization signal is configured in the transmission control indicator (TCI) instead of the transmission opportunity index.

[0118] (3) Resource pool information of the uplink access signal

[0119] The first node can receive the synchronization signal based on the target spatial domain resource index, select at least one spatial domain resource index in the target spatial domain resource index, and determine the resource of the uplink access signal based on the selected at least one spatial domain resource index. Determining the resource of the uplink access signal based on the selected at least one spatial domain resource index includes: selecting at least one resource of the uplink access signal from the resource pool of the uplink access signal corresponding to the selected at least one spatial domain resource index, and transmitting the uplink access signal on the selected resource of the uplink access signal. The resource pool of the uplink access signal can be determined in at least one of the following ways.

[0120] Method one: the first node determines the resource pool information of the uplink access signal corresponding to the selected at least one spatial domain resource index based on the first correspondence relationship and the selected at least one spatial domain resource index, and the first correspondence relationship is the correspondence relationship between the target spatial domain resource index and the resource pool of the uplink access signal.

[0121] The first node can determine a physical random access channel (PRACH) resource pool (i.e., a resource pool of an uplink access signal) corresponding to the synchronization signal according to the target spatial domain resource index. The X1 spatial domain resources (i.e., the target spatial domain resources) of the synchronization signal and the X1 PRACH resource pools are in one-to-one correspondence. Each of the X1 PRACH resource pools includes at least one PRACH resource, and one PRACH resource includes at least one of the following occupied by the uplink access signal: a time domain resource, a frequency domain resource, and a code domain resource. The first node selects at least one spatial domain resource from the X1 spatial domain resources, and determines a corresponding at least one PRACH resource pool according to the at least one spatial domain resource. In the determined at least one PRACH resource pool, at least one PRACH resource is selected to send the uplink access signal.

[0122] It should be noted that the correspondence between the target spatial domain resource and the PRACH resource pool is the same in different corresponding periods of the target spatial domain resource and the PRACH resource pool. As shown in FIG. 12, one corresponding period includes that each of the X1 spatial domain resources corresponds to at least one PRACH resource pool, and the number of PRACH resource pools included in different corresponding periods is the same. In the first corresponding period, the spatial domain resource index 0 of the synchronization signal is sequentially mapped to the PRACH resource pool 0-3. In the second corresponding period, the spatial domain resource index 0 of the synchronization signal is also sequentially mapped to the PRACH resource pool 0-3.

[0123] The second mode is similar to the first mode, except that the correspondence between the X1 spatial domain resources of the synchronization signal and the X1 PRACH resource pools can be different in different corresponding periods. For example, the first correspondence between the X1 spatial domain resources and the X1 PRACH resource pools can be determined based on at least one of the following: a first corresponding period index of the uplink access signal resource, a period index of the synchronization signal, and a starting resource index, wherein the starting resource index is a first resource index, a spatial domain resource index, or a resource index of the uplink access signal used to determine the start of the first correspondence in a corresponding period of the first correspondence. Each of one or more spatial domain resource indexes corresponds to one or more uplink access signal resource pools. As shown in FIG. 13, in the first corresponding period, the spatial domain resource index 0 of the synchronization signal is sequentially mapped to the PRACH resource pool 0-3. In the second corresponding period, the spatial domain resource index 2 of the synchronization signal is sequentially mapped to the PRACH resource pool 0-3.

[0124] The third mode, the first node determines at least one target first resource in a plurality of first resource indexes, and the first node determines a resource pool of at least one uplink access signal corresponding to the target first resource according to the target first resource and a second resource where the target first resource is located; the first node sends the uplink access signal based on the resource pool of the at least one uplink access signal, and / or determines a resource that can be occupied by the target signal based on the resource pool of the at least one uplink access signal. For example, the first node and the second node agree to determine a third correspondence relationship between X candidate first resources and X PRACH resource pools, and the first node selects different indexes of target first resources in different periods of synchronization signals, so that different PRACH resource pools are determined. Or in different periods of synchronization signals, X1 first resource indexes are determined, and X1 PRACH resource pools are determined from the X PRACH resource pools according to the X1 first resource indexes and the third correspondence relationship. The first node selects at least one first resource from the X1 first resources, determines at least one PRACH resource pool according to the selected at least one first resource and the third correspondence relationship, and selects a PRACH resource in the determined at least one PRACH resource pool to send a PRACH (i.e., an uplink access signal). At this time, it can also be called that in each period of the synchronization signal or each corresponding period of the third correspondence relationship, a correspondence relationship can be established between X1 first resources (i.e., target first resources) and X1 PRACH resource pools. The determination parameter of the third correspondence relationship includes a second resource index. The first node can determine a PRACH resource pool based on the selected first resource and the synchronization signal period index where the selected first resource is located. In the determined PRACH resource pool, a PRACH resource is determined, and an uplink access signal is sent in the determined PRACH resource.

[0125] The first node and the second node can agree on a correspondence relationship between a synchronization signal period and a PRACH resource pool, that is, the determination of the correspondence relationship between X1 first resources and X1 PRACH resource pools includes not only the index of the target first resource, but also the index of the second resource. In this way, the same effect as that of the third mode, the first mode and the second mode can be achieved, that is, the target spatial resource corresponding to the PRACH resource pool selected by the first node is the same as the target spatial resource corresponding to the first resource selected by the first node, and only the implementation mode of the first node is different. The difference between the first mode and the third mode is that the first correspondence relationship in the first mode does not change with the second resource, and the X1 PRACH resource pool indexes determined should also not change with the second resource. In the third mode, the indexes of the X1 PRACH resource pools also change with the second resource. The third correspondence relationship changes (or is the same) with the second resource.

[0126] In the above manner, after the first node determines the PRACH resource pool, the first node transmits the uplink access signal according to the determined PRACH resource pool, and the first node can also determine the resources that can be occupied by other signals according to the determined PRACH resource pool. For example, the other signals cannot occupy at least one of the time domain resources and the frequency domain resources occupied by the PRACH resource pool. In different second resources, the X1 PRACH resource pools determined are different, so that the X1 PRACH resource pools that cannot be occupied by the other signals are also different.

[0127] (4) Detection opportunity of common control channel

[0128] When determining the detection opportunity of the common control channel, a plurality of manners can be used for determination, which will be described below.

[0129] In a manner A, the first node determines the detection opportunity of the common control channel corresponding to the target spatial domain resource index based on a second correspondence relationship and the target spatial domain resource index. The second correspondence relationship is a correspondence relationship between the candidate spatial domain resource and the detection opportunity of the common control channel. The second correspondence relationship is determined according to at least one of the following: the periodic index of the synchronization signal, the periodic index of the second correspondence relationship. In a period of one second correspondence relationship, each spatial domain resource in the plurality of spatial domain resources corresponds to a group of detection opportunities of the common control channel.

[0130] The first node can determine the correspondence relationship between the X candidate spatial domain resource indexes and the X detection opportunities of the common control channel. Further, the quasi co-location reference signal of the common control channel is the synchronization signal corresponding to the target spatial domain resource index that has the second correspondence relationship with the detection opportunity of the common control channel, which can also be referred to as the channel large-scale parameter of the common control channel. The channel large-scale parameter of the common control channel is obtained according to the channel large-scale parameter of the target spatial domain resource that has the second correspondence relationship with the detection opportunity of the common control channel. The first correspondence relationship or the third correspondence relationship focuses on the X1 spatial domain resource indexes, while the second correspondence relationship involves the X candidate spatial domain resource indexes, not the X1 spatial domain resource indexes selected from the X candidate spatial domain resource indexes, because when detecting the common control channel, the first node does not know the X1 spatial domain resource indexes, but only knows the X candidate spatial domain resource indexes. Of course, when the first node accesses, the X1 spatial domain resource indexes are known, and the second correspondence relationship can also be updated to the correspondence relationship between the X1 target spatial domain resource indexes and the X detection opportunities of the common control channel. When determining the PRACH resource pool, the X1 spatial domain resource indexes are already known.

[0131] The channel large-scale parameter corresponding to one spatial resource index of the synchronization signal is obtained according to the synchronization signal on the first resource associated with the spatial resource index. The detection opportunity of the common control channel is determined according to the target spatial resource index, and the common control channel is detected at the determined detection opportunity. Optionally, in the corresponding period between the spatial resource index of the synchronization signal and the detection opportunity of the common control channel, the corresponding relationship between the spatial resource index of the synchronization signal and the detection opportunity of the common control channel is the same. As shown in FIG. 14, in the first corresponding period, the detection opportunity 0 of the common control channel corresponds to the spatial resource index 0, and the detection opportunity 1 of the common control channel corresponds to the spatial resource index 1. In the second corresponding period, the detection opportunity 0 of the common control channel corresponds to the spatial resource index 0, and the detection opportunity 1 of the common control channel corresponds to the spatial resource index 1. Of course, it is also not excluded that the corresponding relationship between the spatial resource index of the synchronization signal and the detection opportunity of the common control channel is different in different corresponding periods. As shown in FIG. 15, in the first corresponding period, the detection opportunity 0 of the common control channel corresponds to the spatial resource index 0, and the detection opportunity 1 of the common control channel corresponds to the spatial resource index 1. In the second corresponding period, the detection opportunity 0 of the common control channel corresponds to the spatial resource index 1, and the detection opportunity 1 of the common control channel corresponds to the spatial resource index 0. The different detection opportunities of the common control channel in FIG. 14 and FIG. 15 are distinguished by time division, and the embodiment of the present disclosure also does not exclude being distinguished by any one or more of time division, frequency division, and code division. Optionally, the corresponding relationship between one spatial resource index of the synchronization signal and the detection opportunity of the common control channel corresponds to the period of one synchronization signal.

[0132] The first node can determine a fourth corresponding relationship between the candidate first resource and the detection opportunity of the common control channel. The first node determines the detection opportunity of the common control channel according to the fourth corresponding relationship, the selected target first resource index, and the synchronization signal period index in which the selected target first resource index is located. The channel large-scale parameter of the common control channel is obtained according to the spatial resource corresponding to the target first resource index selected by the first node, and the quasi-co-location reference signal of the common control channel is the synchronization signal on the first resource corresponding to the spatial resource index selected by the first node.

[0133] The first resource selected by the first node corresponds to the same spatial domain resource as the detection opportunity of the common control channel determined in both the manner A and the manner B. The difference is that the manner A establishes a second correspondence between the spatial domain resource index and the detection opportunity, the second correspondence is the same for different second resources, and the index set of the X1 detection opportunities corresponding to the X1 spatial domain resources is the same. The manner B establishes a correspondence between the first resource and the detection opportunity, the correspondence is different for different second resources, or the correspondence is the same for different second resources, but since the set of the first resources determined in each second resource according to the association relationship can be different, the X1 detection opportunities corresponding to the first resources determined in each second resource can also be different. For example, in the second resource with the index n, the X1 detection opportunities determined are the detection opportunities {0, 3}, and in the second resource with the index n+1, the X1 detection opportunities determined are the detection opportunities {2, 5}.

[0134] The common control channel includes a control channel of a data channel of scheduling and system information, or a control channel directly notifying system information. The above-mentioned manner A and manner B can also be used for determining the transmission opportunity (that is, the first resource) of the broadcast channel. For example, the detection opportunity of the common control channel in the manner A and the manner B is replaced by the transmission opportunity of the broadcast channel.

[0135] (5) Rate matching information of the target signal

[0136] In a possible implementation, an uplink access signal is transmitted based on the determined resource pool of the uplink access signal, and / or the resource of the uplink access signal is determined based on the determined resource pool of the uplink access signal, and the resource of the uplink access signal includes a resource that can be occupied by the target signal.

[0137] After the set of the target spatial domain resource indexes is determined, the set of the first resource indexes occupied by the synchronization signal can be determined according to the set of the target spatial domain resource indexes. Then, the resource that can be occupied by other signals can be determined according to the set of the first resource indexes occupied by the synchronization signal, that is, rate matching is performed. For example, the other signals (that is, the target signal) cannot occupy the resource in the set of the first resource indexes occupied by the synchronization signal, and can occupy the resource in the X candidate first resources except the set of the first resource indexes occupied by the synchronization signal. The resource can include at least one of the following: a physical resource block (PRB), an RE, and an orthogonal frequency division multiplexing (OFDM) symbol. For example, when the resource is an OFDM symbol, the other signals cannot occupy the OFDM symbol identified in the set of the first resource indexes.

[0138] The quasi co-location relationship is met between the synchronization signal and other signals on the time domain resource occupied by the synchronization signal and other signals in terms of the space domain receiving parameter. When the second node informs the synchronization signal information used for determining the rate matching information of the other signals, the second node also informs the above-mentioned space domain resource index set, the first node determines the transmission opportunity according to the informed space domain resource index set, and determines the resource not occupied by the other signals according to the determined transmission opportunity, that is, when the rate matching information of the other signals includes the synchronization signal information, the second node does not inform the transmission opportunity index of the synchronization signal, but informs the space domain resource set index occupied by the synchronization signal, the transmission opportunity occupied by the synchronization signal is obtained through the informed space domain resource index set of the synchronization signal and the above-mentioned association relationship, so that the resource not occupied by the other signals in the resource occupied by the synchronization signal can be obtained, and the resource not occupied by the other signals is determined through the synchronization signal information in the rate matching information of the other signals.

[0139] In another possible implementation, in different synchronization signal periods, the pattern of X synchronization signal candidate transmission opportunities occupying 5 ms is the same, but the indexes of the 5 ms occupied are different in different synchronization signal periods, for example, X candidate synchronization signal transmission opportunities occupy X time domain resources in 5 ms. In the nth synchronization signal period, the time domain symbols with indexes of {y, y+M, y+2*M, y+3M} in the third 5 ms in the 4 5 ms in the 20 ms period are occupied, where y is the starting symbol of the X time domain resources occupied, and M is a positive integer. In the n+1th synchronization signal period, the time domain symbols with indexes of {y, y+M, y+2*M, y+3M} in the first 5 ms in the 4 5 ms in the 20 ms period are also occupied. At this time, the index of the 5 ms occupied in one synchronization signal period is obtained according to the second resource index (for example, synchronization signal period, frame, half frame).

[0140] In a possible implementation, different synchronization signal periods belong to a time window of a system message, where the system message includes related information of the synchronization signal, for example, the transmission parameter of the synchronization signal can be changed through the system message, and the transmission parameter of the synchronization signal belonging to different synchronization signal periods in different system message time windows can be changed. For example, the quasi co-location relationship is not met between the synchronization signals with the same synchronization signal index in different synchronization signal periods belonging to different system message time windows. In one system message time window, the system message does not change.

[0141] In another possible implementation, the number of first resources of the synchronization signal is equal to the number of space domain resources of the synchronization signal, and of course, the embodiment does not exclude the case that the number of transmission opportunities of the synchronization signal is greater than the number of space domain resources of the synchronization signal, for example, in one synchronization signal period, a plurality of transmission opportunities of the synchronization signal correspond to one space domain resource of the synchronization signal.

[0142] In some embodiments, the first node determines at least one target first resource index in the plurality of first resource indexes, the target first resource being a first resource occupied by the synchronization signal; the first node determines a detection opportunity of the common control channel corresponding to the target first resource based on a second resource where the target first resource is located; and the first node detects the common control channel at the detection opportunity of the common control channel corresponding to the target first resource. In this way, when determining the detection opportunity of the common control channel, the target first resource index is determined, and the detection opportunity of the common control channel is determined based on the second resource where the target first resource is located, in combination with the fourth correspondence relationship.

[0143] In the embodiments of the present disclosure, the first node can determine the association relationship between the X candidate transmission opportunities (i.e., the first resources) of the synchronization signals and the Y candidate spatial resources. That is, the association relationship is the association relationship between all candidate transmission opportunities and all candidate spatial resources, which is referred to as the first association relationship. The embodiments of the present disclosure also do not exclude that X transmission opportunities are selected from X2 candidate transmission opportunities, and Y spatial resource indexes are determined from Y2 candidate spatial resources, and the association relationship is the association relationship between the X transmission opportunities and the Y spatial resource indexes, wherein the synchronization signals occupy each of the X transmission opportunities. Y is a positive integer greater than or equal to X. The X2 candidate transmission opportunities are included in any one synchronization signal period, the X transmission opportunities are included in different synchronization signal periods, and the X transmission opportunities may or may not occupy the same transmission opportunity index in the X2 candidate transmission opportunities in different synchronization signal periods. At this time, the association relationship is not the association relationship between all candidate transmission opportunities and all candidate spatial resources, but the association relationship between the transmission opportunities occupied by the synchronization signals and the spatial resources occupied by the synchronization signals, wherein the transmission opportunities occupied by the synchronization signals belong to the set of all candidate transmission opportunities, and the spatial resources occupied by the synchronization signals belong to the set of all candidate spatial resources, which is referred to as the second association relationship. The first association relationship can not only realize the randomization of the first resources occupied by the synchronization signals between cells while realizing the randomization of the beams between cells, especially in the case that the transmission opportunities occupied by the synchronization signals are a subset of all candidate transmission opportunities. The second association relationship can only realize the randomization of the beams between cells, and cannot realize the randomization of the first resources, but can reduce the complexity of the synchronization signal detection of the terminal, the set of the first resources occupied by the synchronization signals in different second resources is the same, which is convenient for the implementation of the base station and the terminal. In summary, if the first association relationship is adopted, the index set of the first resources occupied by the synchronization signals in different second resources can be different, and the spatial resource corresponding to the same first resource index can be different. If the second association relationship is adopted, the index set of the first resources occupied by the synchronization signals in different second resources is the same, and the spatial resource corresponding to the same first resource index can be different. The association relationship of the present disclosure includes one or more of the first association relationship and the second association relationship.

[0144] In one embodiment, the index of the first resource is according to the index size of the corresponding time domain resource, frequency domain resource, code domain resource of the first resource in turn increasing (or decreasing). If the multiple first resources are multiplexed by time division and code division, the index of the first resource is first increased according to the code domain resource, and then increased according to the time domain resource. If the multiple first resources are multiplexed by frequency division and code division, the index of the first resource is first increased according to the code domain resource, and then increased according to the frequency domain resource. If the multiple first resources are multiplexed by time division, frequency division and code division, the index of the first resource is first increased according to the code domain resource, then increased according to the frequency domain resource, and finally increased according to the frequency domain resource.

[0145] In one embodiment, the index of the first resource in the association relationship is the absolute index of the first resource in the multiple candidate first resources. This index mode is suitable for the first association relationship and the second association relationship. In one embodiment, the index of the first resource in the association relationship is a relative index, wherein the index of the first resource is the index in the target first resource set, and the target first resource index is selected from the candidate first resources and is a subset of the candidate first resource set. This index mode is suitable for the second association relationship.

[0146] When determining the PRACH resource, the first correspondence relationship between the X1 spatial resource indexes and the Z PRACH resource pools is determined, instead of the first correspondence relationship between the X spatial resource indexes and the Z PRACH resource pools, because the terminal can already obtain the set of X1 spatial resource indexes occupied by the synchronization signal based on the common message. When determining the detection opportunity of the common control channel, the second correspondence relationship between the X candidate spatial resource indexes and the Z1 common control channel detection opportunity groups is determined, instead of the correspondence relationship between the X1 spatial resource indexes occupied by the synchronization signal and the Z1 common control channel detection opportunity groups, because some first nodes only know the X candidate spatial resource indexes and do not know the X1 spatial resource indexes occupied by the synchronization signal. Z and Z1 are positive integers.

[0147] In summary, in the design of NR, the index of the time domain transmission opportunity of the synchronization signal is bound to the spatial resource of the synchronization signal, so the index of the time domain transmission opportunity of the synchronization signal is equal to the index of the spatial resource. In the embodiments of the present disclosure, the binding relationship between the two is unbound, the inter-cell interference is reduced and / or randomized, the interference includes the interference between synchronization signals and the interference between the synchronization signal and other signals, so that the access time of different spatial beams is equalized, at this time, the index of the synchronization signal transmission opportunity is not equal to the index of the spatial resource of the synchronization signal, and in subsequent applications, the index of the spatial resource of the synchronization signal is used instead of the index of the synchronization signal transmission opportunity. The applications include: determining at least one of the following according to the index of the spatial resource: a PRACH resource pool, a PRACH resource, a synchronization signal used for measurement, a quasi co-location reference signal of a target signal, a channel large-scale parameter of a target signal, an opportunity of detecting a common control channel, a second node selecting a subset of spatial resources for transmitting a synchronization signal from a candidate spatial resource set, a second node selecting a subset of transmission opportunities for transmitting a synchronization signal from a candidate transmission opportunity set, rate matching information used for determining other signals, a first node selecting a subset of spatial resources for receiving a synchronization signal from a candidate spatial resource set, and a second node selecting a subset of transmission opportunities for transmitting a synchronization signal from a candidate transmission opportunity set. The plurality of synchronization signal transmission opportunities included in one synchronization signal period are not only time division transmission opportunities, and the plurality of synchronization signal transmission opportunities can use one or more of the following multiplexing modes: code division, time division, and frequency division.

[0148] The synchronization signal transmission method provided by the embodiments of the present disclosure can be applied to the second node 302 in the communication system shown in FIG. 3. FIG. 16 shows a flowchart of a second synchronization signal transmission method. As shown in FIG. 16, the synchronization signal transmission method includes:

[0149] S1601, the second node obtains the association relationship between the first resource index of the synchronization signal and the spatial resource index of the synchronization signal according to the second resource index.

[0150] The second resource index can be used to index a plurality of second resources of the synchronization signal, and the first resource can include a time domain resource. At least one first resource is included in one second resource of the synchronization signal. For example, a plurality of time domain resources are included in one period.

[0151] In a possible implementation, the time domain resource index and the space domain resource index have a fixed association relationship in different synchronization signal periods. In the case of inter-cell synchronization signal interference, since the association relationship is fixed, the interference will always exist and the synchronization signal interference cannot be reduced. To solve this problem, the association relationship between the first resource index and the space domain resource index can be unbound, and one synchronization signal period corresponds to one association relationship (between the first resource index and the space domain resource index). The second node can determine the association relationship between the first resource index and the space domain resource index based on the second resource index, and transmit the synchronization signal based on the association relationship. In this way, in the case of inter-cell synchronization signal interference, since the association relationship corresponding to different synchronization signal periods is no longer fixed, the originally interfered synchronization signal no longer interferes, thereby realizing interference randomization and reducing inter-cell synchronization signal interference.

[0152] S1602, the second node transmits the synchronization signal according to the association relationship.

[0153] After determining the association relationship, the second node can determine the index set of the target first resource occupied by the synchronization signal in the second resource based on the second resource index of the currently to-be-transmitted synchronization signal and the association relationship, and transmit the synchronization signal on each target first resource by using the space domain resource index corresponding to the target first resource in the association relationship. The association relationship in different second resources is different, so that the inter-cell synchronization signal interference can be randomized, and the inter-cell synchronization signal interference can be reduced.

[0154] It should be noted that the first resource, the second resource, and the like can refer to the content of the first node side described above, and the embodiments of the present disclosure will not be described here.

[0155] It can be understood that the synchronization signal transmission apparatus includes a hardware structure and / or a software module corresponding to the execution of each function to achieve the above functions. Those skilled in the art should easily realize that the algorithm steps of each example described in the embodiments of the present disclosure can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in hardware or computer software driven hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present disclosure.

[0156] The embodiments of the present disclosure can divide the function modules of the synchronization signal transmission device according to the above-mentioned method embodiments. For example, each function module can be divided according to each function, or two or more functions can be integrated into one function module. The integrated module can be realized in the form of hardware or software. It should be noted that the division of the modules in the embodiments of the present disclosure is illustrative, and is only a logical function division. In actual implementation, another division mode can be used. The following will be described taking the division of each function module according to each function as an example.

[0157] FIG. 17 is a structural schematic diagram of a communication device provided by an embodiment of the present disclosure. The communication device can execute the synchronization signal transmission method provided by the above-mentioned method embodiments. As shown in FIG. 17, the communication device includes a receiving unit 1701.

[0158] The receiving unit 1701 is configured to receive a synchronization signal, wherein the synchronization signal is transmitted based on an association relationship, the association relationship includes an association relationship between a plurality of first resource indexes of the synchronization signal and a plurality of space domain resource indexes of the synchronization signal, and the association relationship is determined according to a second resource index.

[0159] In a possible implementation, the first resource index is used to index at least one of a time domain resource of the synchronization signal, a frequency domain resource of the synchronization signal, and a code domain resource of the synchronization signal. In a possible implementation, the second resource index includes at least one of a period index of the synchronization signal, a half-frame index, and a frame index. In a possible implementation, a second resource corresponding to one second resource index includes a plurality of first resources corresponding to a plurality of first resource indexes of the synchronization signal; and / or,

[0160] In at least two second resources corresponding to at least two second resource indexes, a pattern of a plurality of first resources corresponding to a plurality of first resource indexes of the synchronization signal is the same.

[0161] In a possible implementation, the association relationship is determined according to at least one of the following: a received indication message, a pre-agreed association relationship, a cell index, a cell group index, and the second resource index.

[0162] In a possible implementation, in at least two second resources corresponding to at least two second resource indexes, the first resource indexes corresponding to the same space domain resource index are different.

[0163] In a possible implementation, in the at least two second resources corresponding to the at least two second resource indexes, a quantity of target first resources occupied by the synchronization signals is same, and the target first resources belong to a plurality of first resources corresponding to the plurality of first resource indexes.

[0164] In a possible implementation, in the at least two second resources corresponding to the at least two second resource indexes, a quasi co-location relationship is satisfied between the synchronization signals on two first resources corresponding to two first resource indexes associated with a same spatial resource index.

[0165] In a possible implementation, the synchronization signals satisfying the quasi co-location relationship are further associated with a same at least one of the following: a cell index, a cell group index, a frequency domain resource, a code domain resource, a transmission opportunity group.

[0166] In a possible implementation, in the at least two second resources corresponding to the at least two second resource indexes, two first resource indexes associated with a same spatial resource index are different.

[0167] In a possible implementation, the first resource indexes correspond to first resources including code domain resources, and the code domain resources include cell group indexes, wherein a parameter value of a first type parameter of at least one cell index in one cell group index is same, and a parameter value of a second type parameter of each cell index in the one cell group index is respectively determined.

[0168] In a possible implementation, the communication apparatus further includes a determining unit 1702, configured to determine, in the at least two second resources corresponding to the at least two second resource indexes, a target first resource index set according to the association relationship, and the target first resources belong to a plurality of first resources corresponding to the plurality of first resource indexes.

[0169] In a possible implementation, the determining unit 1702 is further configured to determine a target parameter according to the target first resource index set.

[0170] In a possible implementation, the determining unit 1702 is further configured to determine a target spatial resource index set from a plurality of spatial resource indexes of the synchronization signals, and the target spatial resources belong to a plurality of spatial resources corresponding to the plurality of spatial resource indexes of the synchronization signals.

[0171] In a possible implementation, the determining unit 1702 is further configured to determine a target parameter based on the target spatial resource index set.

[0172] The determining unit 1702 is specifically configured to: determine, based on the association relationship, an index set of a target first resource corresponding to the target airspace resource index from the plurality of first resource indexes.

[0173] The target parameter is determined based on the index set of the target first resource.

[0174] In a possible implementation, the target parameter includes at least one of the following: a synchronization signal as a measurement reference signal, a quasi co-location reference signal of a target signal, a large-scale parameter of the target signal, rate matching information of the target signal, a detection opportunity of a common control channel, a resource pool of an uplink access signal, an index set of a first resource occupied by the synchronization signal, a resource of the uplink access signal, and a first resource set in which the synchronization signal is received.

[0175] In a possible implementation, when the target parameter includes the resource pool of the uplink access signal, the resource pool of the uplink access signal is determined based on at least one selected target airspace resource index and a first correspondence relationship, the first correspondence relationship being a correspondence relationship between a target airspace index in the index set of the target airspace resource and the resource pool of the uplink access signal, and the at least one selected target airspace resource index belonging to the index set of the target airspace resource.

[0176] In a possible implementation, the first correspondence relationship is determined based on at least one of the following: a corresponding period index of the first correspondence relationship in which a resource of the uplink access signal is located, a synchronization signal period index, and a starting resource index; and the starting resource index being a first resource index used to determine a start of the first correspondence relationship in a corresponding period of the first correspondence relationship.

[0177] In a possible implementation, when the target parameter includes the detection opportunity of the common control channel, the detection opportunity of the common control channel is determined based on at least one selected target airspace resource index and a second correspondence relationship, the second correspondence relationship being a correspondence relationship between the plurality of airspace resource indexes and the detection opportunity of the common control channel.

[0178] In a possible implementation, the second correspondence relationship is determined according to at least one of the following: a period index of the synchronization signal and a corresponding period index of the second correspondence relationship; and each airspace resource in the plurality of airspace resources corresponding to a group of detection opportunities of the common control channel in a corresponding period of the second correspondence relationship.

[0179] In a possible implementation, the communication apparatus further includes a sending unit 1703; and the sending unit 1703 is configured to send the uplink access signal based on the determined resource pool of the uplink access signal.

[0180] In a possible implementation, the determining unit 1702 is further configured to determine the resource of the uplink access signal based on the determined resource pool of the uplink access signal, and the resource of the uplink access signal includes a resource that can be occupied by the target signal.

[0181] In a possible implementation, the receiving unit 1701 is further configured to receive the synchronization signal on one or more target first resources in the multiple target first resources corresponding to the index set of the target first resource.

[0182] In a possible implementation, the receiving unit 1701 is specifically configured to receive the synchronization signal according to the association relationship.

[0183] In a possible implementation, the receiving unit 1701 is further configured to determine the first resource for receiving the synchronization signal according to the association relationship, and receive the synchronization signal by using the spatial domain resource corresponding to the spatial domain resource index of the first resource for receiving the synchronization signal, on the first resource for receiving the synchronization signal.

[0184] FIG. 18 is a structural schematic diagram of another communication apparatus provided by an embodiment of the present disclosure, which can execute the synchronization signal transmission method provided by the method embodiments.

[0185] The determining unit 1801 is configured to acquire an association relationship between multiple first resource indexes of a synchronization signal and multiple spatial domain resource indexes of the synchronization signal according to a second resource index.

[0186] The sending unit 1802 is configured to send the synchronization signal based on the association relationship.

[0187] In a possible implementation, the first resource index is used to index at least one of the following: a time domain resource of the synchronization signal, a frequency domain resource of the synchronization signal, and a code domain resource of the synchronization signal.

[0188] In a possible implementation, the second resource index includes at least one of the following: a period index of the synchronization signal, a half frame index of the synchronization signal, and a frame index of the synchronization signal.

[0189] In a possible implementation, the second resource corresponding to one second resource index includes multiple first resources corresponding to the multiple first resource indexes of the synchronization signal; and / or,

[0190] In at least two second resources corresponding to at least two second resource indexes, a pattern occupied by a plurality of first resources corresponding to a plurality of first resource indexes of the synchronization signal is same.

[0191] In a possible implementation, the association relationship is determined according to at least one of the following: a transmitted indication message, a pre-agreed association relationship, a cell index, a cell group index, and the second resource index.

[0192] In a possible implementation, in different second resources, a quasi co-location relationship is satisfied between the synchronization signals in two first resources associated with a same spatial resource index.

[0193] In a possible implementation, in at least two second resources corresponding to at least two second resource indexes, the first resource indexes corresponding to a same spatial resource index are different.

[0194] In a possible implementation, in at least two second resources corresponding to at least two second resource indexes, a number of target first resources occupied by the synchronization signal is same, the target first resources belong to a plurality of first resources corresponding to a plurality of first resource indexes.

[0195] In a possible implementation, in at least two second resources corresponding to at least two second resource indexes, a quasi co-location relationship is satisfied between the synchronization signals in two first resources corresponding to two first resource indexes associated with a same spatial resource index.

[0196] In a possible implementation, in at least two second resources corresponding to at least two second resource indexes, the two first resource indexes associated with a same spatial resource index are different.

[0197] In a possible implementation, the determining unit 1801 is further configured to determine, in at least two second resources corresponding to at least two second resource indexes, a set of indexes of target first resources occupied by the synchronization signal according to the association relationship, the target first resources belonging to a plurality of first resources corresponding to a plurality of first resource indexes.

[0198] The determining unit 1801 is further configured to determine a target parameter according to the set of indexes of the target first resources.

[0199] In a possible implementation, the determining unit 1801 is further configured to determine a set of indexes of target spatial resources from a plurality of spatial resource indexes of the synchronization signal, the target spatial resources belonging to a plurality of spatial resources corresponding to the plurality of spatial resource indexes of the synchronization signal.

[0200] In a possible implementation, the determining unit 1801 is further configured to determine a target parameter based on the target set of spatial domain resource indexes.

[0201] In a possible implementation, the target parameter comprises at least one of the following: a synchronization signal as a measurement reference signal, a quasi co-location reference signal of a target signal, a large-scale parameter of the target signal, rate matching information of the target signal, a detection opportunity of a common control channel, a resource pool of an uplink access signal, a set of indexes of target first resources occupied by the synchronization signal, a resource of the uplink access signal, and a first resource set in which the synchronization signal is received.

[0202] In a possible implementation, the sending unit 1802 is specifically configured to: determine, in a second resource corresponding to the second resource index, a set of indexes of target first resources in which the synchronization signal is to be sent according to the association relationship; and send the synchronization signal on one or more first resources corresponding to the set of indexes of target first resources.

[0203] In a possible implementation, the sending unit 1802 is specifically configured to: on each first resource of the one or more resources, send the synchronization signal by using a spatial domain resource corresponding to a spatial domain resource index that has the association relationship with the first resource.

[0204] In the case of implementing the functions of the above integrated modules in the form of hardware, the embodiment of the present disclosure provides another possible structure of the communication device involved in the above embodiments. As shown in FIG. 19, the communication device 190 includes a processor 1902 and a bus 1904. Optionally, the communication device can further include a memory 1901; and optionally, the communication device 190 can further include a communication interface 1903.

[0205] The processor 1902 can be various exemplary logical blocks, modules and circuits described in combination with the embodiments of the present disclosure. The processor 1902 can be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in combination with the embodiments of the present disclosure. The processor 1902 can also be a combination of implementing computing functions, such as one or more microprocessor combinations, combinations of DSP and microprocessor, etc.

[0206] The communication interface 1903 is configured to connect with other devices through a communication network. The communication network can be an Ethernet, a radio access network, a wireless local area network (WLAN) and the like.

[0207] The memory 1901 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a magnetic 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 that can be accessed by a computer, but is not limited thereto.

[0208] As a possible implementation, the memory 1901 can exist independently of the processor 1902, and the memory 1901 can be connected to the processor 1902 through the bus 1904, for storing instructions or program code. When the processor 1902 invokes and executes the instructions or program code stored in the memory 1901, the synchronization signal transmission method provided by the embodiments of the present disclosure can be implemented.

[0209] In another possible implementation, the memory 1901 can also be integrated with the processor 1902.

[0210] The bus 1904 can be an extended industry standard architecture (EISA) bus or the like. The bus 1904 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 19, but it does not mean that there is only one bus or only one type of bus.

[0211] Some embodiments of the present disclosure provide a computer-readable storage medium (for example, a non-transitory computer-readable storage medium) having computer program instructions stored therein, and when the computer program instructions run on a computer, the computer executes the synchronization signal transmission method described in any of the above embodiments.

[0212] By way of example, the computer-readable storage media described above can include, but is not limited to, magnetic storage devices (e.g., hard disk, floppy disk, or magnetic tape), optical storage devices (e.g., compact disk (CD), digital versatile disk (DVD), etc.), smart cards, and flash memory devices (e.g., EPROM, card, stick, or key drive). The various computer-readable storage media described above can represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" shall accordingly be taken to include a single medium or multiple media that store one or more sets of instructions that when executed by a machine cause the machine to perform any one of the methodologies described herein. The term "machine-readable storage medium" shall also be taken to include any medium that is capable of storing or encoding a set of instructions for execution by the machine and that cause the machine to perform any one of the methodologies of the present disclosure. The term "machine-readable storage medium" shall accordingly be taken to include, but not be limited to, solid-state memories, optical media, and magnetic media.

[0213] The embodiments of the present disclosure provide a computer program product containing instructions, which, when executed on a computer, cause the computer to perform the synchronization signal transmission method described in any of the above embodiments. The above is merely a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any changes or replacements within the technical scope disclosed by the present disclosure should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A synchronization signal transmission method, characterized by, The method applied to a first node comprises: receiving a synchronization signal, the synchronization signal being sent based on an association relationship, the association relationship comprising an association relationship between a plurality of first resource indexes of the synchronization signal and a plurality of space domain resource indexes of the synchronization signal, the association relationship being determined according to a second resource index.

2. The method of claim 1, wherein, The first resource index is used to index at least one of the following: time domain resource of the synchronization signal, frequency domain resource of the synchronization signal, code domain resource of the synchronization signal.

3. The method of claim 1, wherein, The second resource index comprises at least one of the following: period index, half frame index, frame index of the synchronization signal.

4. The method of claim 1, wherein one second resource corresponding to one second resource index comprises a plurality of first resources corresponding to a plurality of first resource indexes of the synchronization signal; and / or in at least two second resources corresponding to at least two second resource indexes, a pattern of a plurality of first resources corresponding to a plurality of first resource indexes of the synchronization signal is the same.

5. The method of claim 1, wherein, The association relationship is determined according to at least one of the following: received indication message, pre-agreed association relationship, cell index, cell group index, the second resource index.

6. The method of claim 1, wherein, In at least two second resources corresponding to at least two second resource indexes, the first resource indexes corresponding to the same space domain resource index are different.

7. The method of claim 1, wherein, In at least two second resources corresponding to at least two second resource indexes, the number of target first resources occupied by the synchronization signal is the same, the target first resource belonging to a plurality of first resources corresponding to a plurality of first resource indexes.

8. The method of claim 1, wherein, In at least two second resources corresponding to at least two second resource indexes, the synchronization signals on two first resources corresponding to two first resource indexes associated with the same space domain resource index satisfy a quasi co-location relationship.

9. The method of claim 8, wherein, The synchronization signals satisfying the quasi co-location relationship are further associated with the same at least one of the following: cell index, cell group index, frequency domain resource, code domain resource, transmission opportunity group.

10. The method of claim 8, wherein, In at least two second resources corresponding to at least two second resource indexes, two first resource indexes associated with the same space domain resource index are different.

11. The method of claim 1, wherein, The first resource corresponding to the first resource index comprises a code domain resource, and the code domain resource comprises a cell group index, wherein the parameter values of a first type of parameter of at least one cell index in one cell group index are the same, and the parameter values of a second type of parameter of each cell index in one cell group index are determined respectively.

12. The method of claim 1, wherein, The method further comprises: In at least two second resources corresponding to at least two second resource indexes, according to the association relationship, an index set of target first resources belonging to a plurality of first resources corresponding to a plurality of first resource indexes is determined respectively.

13. The method of claim 12, wherein, The method further comprises: determining a target parameter according to the index set of the target first resource.

14. The method of claim 1, wherein, The method further comprises: determining an index set of target space domain resources from a plurality of space domain resource indexes of the synchronization signal; the target space domain resources belonging to a plurality of space domain resources corresponding to a plurality of space domain resource indexes of the synchronization signal.

15. The method of claim 14, wherein, The method further comprises: determining a target parameter based on the index set of the target spatial domain resource.

16. The method of claim 15, wherein, The target parameter is determined based on the index of the target spatial domain resource, including: determining, based on the association relationship, an index set of a target first resource corresponding to the index of the target spatial domain resource from the plurality of first resource indexes; determining the target parameter based on the index set of the target first resource.

17. The method of any of claims 13-16, wherein The target parameter includes at least one of: a synchronization signal as a measurement reference signal, a quasi co-location reference signal of a target signal, a large-scale parameter of a target signal, rate matching information of a target signal, a detection opportunity of a common control channel, a resource pool of an uplink access signal, an index set of a first resource occupied by the synchronization signal, a resource of the uplink access signal, or a first resource set in which the synchronization signal is received.

18. The method of claim 14, wherein, In a case where the target parameter includes the resource pool of the uplink access signal, the resource pool of the uplink access signal is determined based on at least one selected index of the target spatial domain resource and a first correspondence relationship, the first correspondence relationship being a correspondence relationship between a target spatial domain index in the index set of the target spatial domain resource and the resource pool of the uplink access signal, wherein the at least one selected index of the target spatial domain resource belongs to the index set of the target spatial domain resource.

19. The method of claim 18, wherein, The first correspondence relationship is determined based on at least one of: a corresponding period index of the first correspondence relationship in which a resource of the uplink access signal is located, a synchronization signal period index, and a starting resource index; the starting resource index being a first resource index used to determine a start of the first correspondence relationship in a corresponding period of the first correspondence relationship.

20. The method of claim 14, wherein, In a case where the target parameter includes the detection opportunity of the common control channel, the detection opportunity of the common control channel is determined based on at least one selected index of the target spatial domain resource and a second correspondence relationship, the second correspondence relationship being a correspondence relationship between the plurality of spatial domain resource indexes and the detection opportunity of the common control channel.

21. The method of claim 20, wherein, The second correspondence relationship is determined according to at least one of: a period index of the synchronization signal, and a corresponding period index of the second correspondence relationship; each spatial domain resource in the plurality of spatial domain resources corresponding to a group of detection opportunities of the common control channel in a corresponding period of the second correspondence relationship.

22. The method of claim 18, wherein, In a case where the target parameter includes the resource pool information of the uplink access signal, the method further includes: sending an uplink access signal based on the determined resource pool of the uplink access signal, and / or determining a resource of the uplink access signal based on the determined resource pool of the uplink access signal, the resource of the uplink access signal including a resource that can be occupied by a target signal.

23. The method of claim 12 or 16, wherein, The method further includes: receiving the synchronization signal on one or more target first resources in the plurality of target first resources corresponding to the index set of the target first resource.

24. The method of claim 1, wherein, The receiving of the synchronization signal includes: receiving the synchronization signal according to the association relationship.

25. The method of claim 24, wherein, The method further includes: According to the association relationship, a first resource for receiving the synchronization signal is determined, and the synchronization signal is received on the first resource for receiving the synchronization signal by using a spatial domain resource corresponding to the spatial domain resource index in the association relationship.

26. A synchronization signal transmission method, comprising: The method applied to a second node comprises: According to a second resource index, an association relationship between a plurality of first resource indexes of a synchronization signal and a plurality of spatial domain resource indexes of the synchronization signal is obtained; Based on the association relationship, the synchronization signal is transmitted.

27. The method of claim 26, wherein, The first resource index is used to index at least one of the following: time domain resource of the synchronization signal, frequency domain resource of the synchronization signal, and code domain resource of the synchronization signal.

28. The method of claim 26, wherein, The second resource index comprises at least one of the following: period index, half frame index, and frame index of the synchronization signal.

29. The method of claim 26, wherein, A second resource corresponding to one of the second resource indexes comprises a plurality of first resources corresponding to a plurality of first resource indexes of the synchronization signal; and / or In at least two second resources corresponding to at least two of the second resource indexes, a pattern of a plurality of first resources corresponding to a plurality of first resource indexes of the synchronization signal is the same.

30. The method of claim 26, wherein, The association relationship is determined according to at least one of the following: an indication message to be transmitted, a pre-agreed association relationship, a cell index, a cell group index, and the second resource index.

31. The method of claim 26, wherein, In at least two second resources corresponding to at least two of the second resource indexes, the first resource indexes corresponding to the same spatial domain resource index are different.

32. The method of claim 26, wherein, In at least two second resources corresponding to at least two of the second resource indexes, a number of target first resources occupied by the synchronization signal is the same, and the target first resource belongs to a plurality of first resources corresponding to a plurality of first resource indexes.

33. The method of claim 26, wherein, In at least two second resources corresponding to at least two of the second resource indexes, a quasi-co-location relationship is satisfied between the synchronization signals on two first resources corresponding to two first resource indexes associated with the same spatial domain resource index.

34. The method of claim 26, wherein, The method further comprises: In at least two second resources corresponding to at least two of the second resource indexes, according to the association relationship, an index set of target first resources occupied by the synchronization signal is determined respectively, and the target first resource belongs to a plurality of first resources corresponding to a plurality of first resource indexes; A target parameter is determined according to the index set of the target first resource.

35. The method of claim 26, wherein, The method further comprises: An index set of target spatial domain resources is determined from a plurality of spatial domain resource indexes of the synchronization signal, and the target spatial domain resource belongs to a plurality of spatial domain resources corresponding to the plurality of spatial domain resource indexes of the synchronization signal; A target parameter is determined based on the index set of the target spatial domain resource.

36. The method of claim 34 or 35, wherein, The target parameter includes at least one of the following: a synchronization signal as a measurement reference signal, a quasi co-location reference signal of a target signal, a large-scale parameter of a target signal, rate matching information of a target signal, a detection opportunity of a common control channel, a resource pool of an uplink access signal, an index set of a target first resource occupied by the synchronization signal, a resource of an uplink access signal, and a first resource set in which the synchronization signal is received.

37. The method of claim 26, wherein, Based on the association relationship, the synchronization signal is transmitted, including: In a second resource corresponding to the second resource index, an index set of a target first resource in which the synchronization signal is transmitted is determined according to the association relationship; The synchronization signal is transmitted on one or more first resources corresponding to the index set of the target first resource.

38. The method of claim 37, wherein, The synchronization signal is transmitted on one or more first resources corresponding to the index set of the target first resource, including: On each first resource of the one or more resources, the synchronization signal is transmitted by using a spatial domain resource corresponding to a spatial domain resource index having the association relationship with the first resource.

39. An electronic device, comprising: Including: A memory and a processor; the memory and the processor are coupled; The memory is used to store instructions executable by the processor; The processor executes the instructions to perform the method according to any one of claims 1-25 or any one of claims 26-38.

40. A computer-readable storage medium, comprising: The computer readable storage medium stores computer instructions, when the computer instructions run on the computer, make the computer execute the method according to any one of claims 1-25 or any one of claims 26-38.

41. A computer program product, characterised in that, The computer program product includes computing technology program instructions, when the computing technology program instructions are executed by the processor, the method according to any one of claims 1-25 or any one of claims 26-38 is realized.

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