Signal sending and receiving method, electronic equipment and storage medium

Abstract

Provided in an embodiment of the present application are a signal transmitting and receiving method, an electronic device and a storage medium, the method comprising: transmitting N first signals, the first signals comprising time domain resource range indication information and first signal index indication information, the first signal comprises time domain resource range indication information and first signal second quantity indication information; wherein the value of N is greater than or equal to 1, and the time domain resource range indication information indicates a time domain resource index range; the first signal index indication information is used for indicating an index of the first signal in the N first signals; the first signal second number indication information is used for indicating the number of first signals sent after the first signals in the N first signals; and sending a second signal, wherein the second signal triggers the second node to reduce the stored time domain resource index. According to the embodiment of the invention, the terminal equipment is controlled to receive the paging signal, and the random access efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, and in particular to a signal sending and receiving method, an electronic device and a storage medium. BACKGROUND

[0002] In the random access process of the time slot-based ANOHA algorithm or Q- selection algorithm in the passive Internet of Things communication technology, a reader sends a paging signal, and the paging signal indicates a time slot value range of a round to start a random access process of the round. A terminal device selects a time slot value randomly in the time slot value range and stores the time slot value. Then, the base station traverses each time slot value by sending a time slot decrement command. Each time the time slot decrement command is sent, the terminal device triggers the stored time slot value to be decremented by 1. When the time slot value stored by the terminal device is decremented to 0, the terminal device sends a response signal. However, because the terminal device has very little energy stored, in some network systems, the terminal device often has a power shortage and shuts down, or the terminal device uses a communication function switch state to periodically switch. In the case of shutting down or turning off the communication function, the terminal device cannot receive the paging signal sent by the reader, and thus misses the random access process. Therefore, there is an urgent need for a method that enables the terminal device to receive the paging signal and access the network, thereby improving the random access efficiency of the network. SUMMARY

[0003] Embodiments of the present application provide a signal sending and receiving method, an electronic device and a storage medium, which are designed to control a terminal device to receive a paging signal, so as to improve the random access efficiency of the network.

[0004] Embodiments of the present application provide a signal sending method, wherein the method is applied to a first node, and the method comprises the following steps:

[0005] N first signals are sent, the first signal contains time domain resource range indication information and first signal index indication information, or the first signal contains time domain resource range indication information and first signal second quantity indication information;

[0006] wherein the value of N is greater than or equal to 1, the time domain resource range indication information indicates a time domain resource index range, the time domain resource index range is used for a second node to determine a time domain resource index in the time domain resource index range and store it; the first signal index indication information is used to indicate the index of the first signal in the N first signals; and the first signal second quantity indication information is used to indicate the number of first signals sent after the first signal in the N first signals.

[0007] sending a second signal, the second signal triggering the second node to decrease the stored time domain resource index.

[0008] Embodiments of the present application provide an information receiving method, wherein the method is applied to a second node, and the method comprises:

[0009] receiving at least one of N first signals sent by a first node, wherein the first signal comprises time domain resource range indication information and first signal index indication information, or the first signal comprises time domain resource range indication information and first signal second quantity indication information;

[0010] wherein the value of N is greater than or equal to 1, the time domain resource range indication information indicates a time domain resource index range, the time domain resource index range is used for the second node to determine a time domain resource index within the time domain resource index range and store the time domain resource index, the first signal index indication information is used for indicating the index of the first signal in the N first signals, and the first signal second quantity indication information is used for indicating the quantity of first signals sent after the first signal in the N first signals.

[0011] determining the end time of the last first signal in the N first signals;

[0012] receiving a second signal after the end time of the last first signal, wherein the second signal is used for triggering the second node to decrease the stored time domain resource index.

[0013] Embodiments of the present application further provide a signal sending method, wherein the method is applied to a first node, and the method comprises:

[0014] sending N first signals, wherein the value of N is greater than or equal to 1;

[0015] sending a paging signal after the N first signals, wherein the paging signal comprises time domain resource range indication information, the time domain resource range indication information indicates a time domain resource index range, and the time domain resource index range is used for the second node to determine a time domain resource index within the time domain resource index range and store the time domain resource index.

[0016] Embodiments of the present application further provide an information receiving method, wherein the method is applied to a second node, and the method comprises:

[0017] receiving at least one of N first signals sent by a first node;

[0018] The paging signal is received after an end time of a last first signal of the N first signals, and the paging signal includes time domain resource range indication information, the time domain resource range indication information indicating a time domain resource index range, and the time domain resource index range is used for the second node to determine a time domain resource index in the time domain resource index range and store.

[0019] The embodiments of the present application further provide an electronic device, wherein the electronic device comprises:

[0020] one or more processors;

[0021] a memory for storing one or more programs;

[0022] When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of the embodiments of the present application.

[0023] The embodiments of the present application further provide a computer readable storage medium, wherein the computer readable storage medium stores one or more programs, and the one or more programs are executed by one or more processors to implement the method according to any one of the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort based on these drawings.

[0025] Figure 1 is a flowchart of a signal sending method provided by the embodiments of the present application;

[0026] Figure 2 is a flowchart of a signal receiving method provided by the embodiments of the present application;

[0027] Figure 3 is a flowchart of another signal sending method provided by the embodiments of the present application;

[0028] Figure 4 is a flowchart of another signal receiving method provided by the embodiments of the present application;

[0029] Figure 5 is a structural schematic diagram of a signal sending device provided by the embodiments of the present application;

[0030] Figure 6 is a structural schematic diagram of a signal receiving device provided by the embodiments of the present application;

[0031] Figure 7 This is a schematic diagram of another signal transmitting device provided in an embodiment of this application;

[0032] Figure 8 This is a schematic diagram of another signal receiving device provided in an embodiment of this application;

[0033] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0034] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application.

[0035] In the following description, the use of suffixes such as “module,” “part,” or “unit” to denote elements is solely for the purpose of illustration in this application and has no particular meaning in itself. Therefore, “module,” “part,” or “unit” may be used interchangeably.

[0036] Figure 1 This is a flowchart illustrating a signal transmission method provided in an embodiment of this application. This embodiment is applicable to situations where a control device receives paging information. The method can be executed by a signal transmission device of the first node, which can be implemented using software and / or hardware methods, and is generally integrated into a reader / writer. Figure 1 As shown, the method provided in this application embodiment specifically includes the following steps:

[0037] Step 110: Send N first signals. Each first signal contains time-domain resource range indication information and first signal index indication information, or a second number indication information for the first signal. N is greater than or equal to 1 (or can be understood as a positive integer). The time-domain resource range indication information indicates a time-domain resource index range, which is used by the second node to determine and store a time-domain resource index within that range. The first signal index indication information indicates the index of the first signal among the N first signals. The second number indication information for the first signal indicates the number of first signals sent after the first signal among the N first signals.

[0038] In this embodiment, the first signal can be used to indicate a range of time slot values. There can be multiple first signals. The first signal may include one of time-domain resource range indication information, a first signal index indication information, and a first signal second quantity indication information. That is, the first signal may contain both time-domain resource range indication information and first signal index indication information, or it may contain both time-domain resource range indication information and first signal second quantity indication information. The time-domain resource range indication information in the first signal can directly or indirectly indicate a time-domain resource index range. This time-domain resource index range can be used by the second node to determine a time-domain resource index within this range and store the time-domain resource index. In some embodiments, the time-domain resource index can be referred to as a time-domain resource value. For example, the time-domain resource index range is determined to be from time-domain resource index 0 to S-1 based on the time-domain resource range indication information. The second node randomly selects a time-domain resource index within the range from time-domain resource index 0 to S-1 and stores it.

[0039] Furthermore, a time-domain resource is a time-domain unit, which may include a time slot (slot) or an access opportunity in the slot-ALOHA or Q-selection algorithm. The durations of different time-domain resources may be equal or unequal. The start or end of a time-domain resource can be determined according to a second signal. It can be understood that each second signal corresponds to a time-domain resource, and each time the first node sends a second signal, it indicates the start of a new time-domain resource. This second signal can be used to trigger the second node to decrease the stored time-domain resource index.

[0040] In some embodiments, the first signal index indication information is used to indicate the index (i.e., sequence number) of the first signal among N first signals. For example, among N first signals, the index indicated by the first signal index indication information of the i-th transmitted first signal is i-1, 1≤i≤N. When the first signal index indication information indicates i-1, the indicated first signal is the i-th first signal among N first signals.

[0041] In other embodiments, the second quantity indication information of the first signal is used to indicate the number of first signals sent after the first signal among N first signals, that is, the number of first signals remaining after the first signal. For example, among N first signals, the quantity indicated by the second quantity indication information in the i-th first signal is Ni, 1≤i≤N. Specifically, the first signal is a paging message, which may include time-domain resource range indication information and first signal index indication information, or include time-domain resource range indication information and first signal second quantity indication information. N is a predefined value, or the value of N is indicated by the first quantity indication information of the first signal. Before the random access process, the first node sends multiple first signals so that more second nodes can receive the paging signal, thereby improving the access efficiency of the system. N paging signals correspond to one round of random access process. After the N paging signals are sent, different second nodes access the system on their respective determined time-domain resources. The random access process can also be called an inventory process.

[0042] In some embodiments, N first signals are transmitted within a first duration, which is equal to the time between the start time of the first first signal and the end time of the Nth first signal. The first duration can be a predefined value, or the first duration can be indicated by first duration indication information transmitted in the first signals.

[0043] Step 120: Send a second signal. The second signal triggers the second node to reduce the stored time-domain resource index.

[0044] In this embodiment of the application, after sending N first signals, the first node sends a second signal, which is used to trigger the second node to reduce the stored time-domain resource index.

[0045] In some embodiments, N first signals are transmitted periodically.

[0046] In this embodiment, N is a value greater than 1, and N first signals are transmitted periodically. The transmission period can be T, that is, the transmission time interval between any two adjacent first signals is T, where the transmission time between two first signals is either the start time or the end time of the two first signals. The transmission period T can be a predefined value, or it can be indicated by first signal period information. In some embodiments, the first signal period indication information can be transmitted within the first signals.

[0047] In some embodiments, the interval between the start times of two adjacent first signals among the N first signals is less than or equal to t1-t2, where t1 is the duration of the first state of the second node, and t2 is the transmission duration of one of the N first signals, wherein the second node receives and / or transmits signals in the first state.

[0048] In this embodiment of the application, among the N first signals sent by the first node, the interval between the start times of two adjacent first signals is less than or equal to the time difference between the duration of the second node in the first state and the transmission duration of a first signal, that is, t1-t2, where t1 is the duration of the first state of the second node and t2 is the transmission duration of a first signal among the N first signals. The second node can receive signals and / or send signals in the first state.

[0049] In some embodiments of the application, the method further includes: sending delay indication information; wherein the delay indication information includes at least one of the following:

[0050] The delay indication information indicates the transmission delay of the next signal sent by the first node to the second node;

[0051] The delay indication information indicates the switching delay of the second node to switch to the first state next time, wherein the second node receives and / or transmits signals in the first state;

[0052] The delay indication information indicates the duration of the third state of the second node, in which the second node does not receive signals, does not send signals, runs the clock, and maintains memory during the third state.

[0053] In this embodiment of the application, the first node may also send delay indication information.

[0054] The first delay indication information indicates the transmission delay of the next signal sent by the first node to the second node. The transmission delay is the interval between the transmission time of the signal carrying the delay indication information and the start time of the next signal. The transmission time may include the start time or the end time.

[0055] Alternatively, the delay indication information indicates the switching delay of the second node to switch to the first state next time. The switching delay is the interval between the end time of the signal carrying the delay indication information and the start time of the next first state or the interval between the start time of the third state and the start time of the next first state.

[0056] Alternatively, the delay indication information indicates the duration of the third state of the second node.

[0057] In the embodiments of this application, the second node receives and / or transmits signals in the first state, and in the third state, the second node neither receives nor transmits signals, runs the clock, nor maintains memory.

[0058] In some embodiments, the method further includes: sending first state ratio indication information, which indicates the ratio between the duration of the first state and the duration of the third state; or, the first state ratio indication information indicates the ratio between the duration of the first state and the duration of the second state; wherein, the second node receives and / or sends signals in the first state, and the second node does not receive or send signals, runs the clock, or maintains memory in the third state, and the second duration is the start cycle of the first state.

[0059] Specifically, the first node sends a first state ratio indication information, which indicates the ratio r between the duration of the first state and the duration of the third state; or, the first state ratio indication information indicates the ratio r between the duration of the first state and the second duration. The second node can determine the duration of the third state based on the duration of the first state and the value of r; or, the second node can determine the second duration based on the duration of the first state and the value of r. The second duration can be the first state start cycle of the second node. The second node receives and / or sends signals in the first state, and in the third state, the second node does not receive or send signals, runs the clock, or maintains memory.

[0060] Figure 2 This is a flowchart illustrating a signal receiving method provided in an embodiment of this application. This embodiment is applicable to situations where a control device receives paging information. The method can be executed by a signal receiving device of a second node, which can be implemented using software and / or hardware methods and is generally integrated into a terminal device. Figure 2 As shown, the method provided in this application embodiment specifically includes the following steps:

[0061] Step 210: Receive at least one of the N first signals sent by the first node. The first signal includes time-domain resource range indication information and first signal index indication information, or the first signal includes time-domain resource range indication information and first signal second quantity indication information; wherein, the value of N is greater than or equal to 1 (i.e., N is a positive integer), the time-domain resource range indication information indicates a time-domain resource index range, the time-domain resource index range is used by the second node to determine a time-domain resource index within the time-domain resource index range and store it; the first signal index indication information is used to indicate the index of the first signal among the N first signals; the first signal second quantity indication information is used to indicate the number of first signals sent after the first signal among the N first signals.

[0062] In this embodiment, a second node can receive one of N first signals, while the others may not be received. The time-domain resource range indication information in the first signal can directly or indirectly indicate a time-domain resource index range. This time-domain resource index range can be used by the second node to determine and store a time-domain resource index within that range. In some embodiments, the time-domain resource index can be referred to as a time-domain resource value. For example, if the time-domain resource index range is determined to be from time-domain resource index 0 to S-1 based on the time-domain resource range indication information, the second node randomly selects and stores a time-domain resource index within the range of time-domain resource index 0 to S-1.

[0063] Step 220: Determine the end time of the last first signal among the N first signals.

[0064] In this embodiment of the application, after receiving a first signal, the second node can determine the transmission time of the last first signal among N first signals. The transmission time of the last first signal is either the start time or the end time of the last first signal.

[0065] Step 230: After the end time of the last first signal, receive the second signal, wherein the second signal is used to trigger the second node to reduce the stored time domain resource index.

[0066] Among them, the time-domain resource index is the time-domain resource value or the time-domain resource sequence number.

[0067] In this embodiment of the application, after the end time of the last first signal, the second node can receive the second signal sent by the first node. Upon receiving the second signal, the stored time-domain resource index is reduced.

[0068] In some embodiments of the application, determining the end time of the last first signal among N first signals includes at least one of the following:

[0069] The end time of the last first signal among the N first signals is determined based on the index of the received first signal among the N first signals and the value of N.

[0070] The end time of the last first signal among the N first signals is determined based on the index of the received first signal among the N first signals and the first duration, wherein the first duration is equal to the interval between the start time of the first first signal and the end time of the Nth first signal.

[0071] The end time of the last first signal among the N first signals is determined by the number of first signals sent after the first signal received.

[0072] Based on the above-described embodiments, the end time of the last first signal among the N first signals includes one of the following:

[0073] t n,end +(N-1-n)*T;t n,start +Pn*T;t end +K*T;

[0074] Where n is the index of the first signal received by the second node, 0≤n≤N-1, t n,start Let t be the start time of the first signal corresponding to index n. n,end Let P be the end time of the first signal corresponding to index n, P be the first duration, T be the transmission period of N first signals, K be the number of first signals sent after the received first signal among the N first signals, and t be the number of first signals sent among the N first signals. end Let be the end time of the first signal received among N first signals. The first duration is equal to the interval between the start time of the first first signal and the end time of the Nth first signal.

[0075] In some embodiments, after receiving a first signal, the second node determines the transmission time of the last first signal among the N first signals based on the index of the received first signal among N first signals and the value of N. Specifically, the start time of the last first signal is determined as t. n,start +(N-1-n)*T or determine the end time of the last first signal as t n,end +(N-1-n)*T, where n is the index of the first signal received by the second node, 0≤n≤N-1, t n,start Let t be the start time of the first signal at index n. n,end Let n be the end time of the first signal, and T be the transmission period of the first signal.

[0076] In other embodiments, the end time of the last first signal among the N first signals is determined based on the index of the received first signal among the N first signals and the first duration. Specifically, the end time of the last first signal is determined as t. n,start +Pn*T, where n is the index of the first signal received by the second node, 0≤n≤N-1, t n,start Let P be the start time of the first signal with index n, P be the first duration, and T be the transmission period of the first signal. The first duration is equal to the interval between the start time of the first first signal and the end time of the Nth first signal.

[0077] In other embodiments, after receiving a first signal, the second node determines the transmission time of the last first signal among the N first signals based on the number of first signals sent after the received first signal. Specifically, the start time of the last first signal is determined as t. start +K*T or determine the end time of the last first signal as t end +K*T, where K is the number of first signals sent after the first signal out of N first signals, and t start t is the start time of the first signal. end Let T be the end time of the first signal, and T be the transmission period of the first signal.

[0078] In some embodiments, the second node includes at least one of the following operating states:

[0079] First state, second state, and third state;

[0080] In the first state, the second node receives and / or sends signals; in the second state, the second node does not receive or send signals and does not run the clock; and in the third state, the second node does not receive or send signals, runs the clock, and maintains memory.

[0081] Specifically, the second node includes at least one of three states: a first state, a second state, and a third state. In the first state, the second node can receive and send signals; in the second state, the second node cannot receive or send signals and cannot run its clock; in the third state, the second node cannot receive or send signals but can run its clock and maintain memory. Because signal transmission and reception are not required, the second and third states conserve the second node's energy, retain power, and can also collect energy for recharging. In the first state, the second node can receive a first signal, and upon receiving a first signal, it can switch to the third state. In a specific example, the first state can be called the ON state, the second state can be called the OFF state, and the third state can be called the SLEEP state.

[0082] Based on the above-described embodiments, the method further includes: receiving a first signal based on a first switching mode; receiving a first signal and switching from the first switching mode to a second switching mode; wherein the first switching mode is a switch between a first state and a second state, and the second switching mode is a switch between a first state and a third state.

[0083] In this embodiment, the second node receives a first signal based on a first switching mode. After receiving the first signal, it switches from the first switching mode to a second switching mode. The first switching mode is a switch between a first state and a second state, while the second switching mode is a switch between a first state and a third state. For example, the switching period of the first switching mode is longer than that of the second switching mode. Because the second node does not need to transmit or receive signals in the second or third state, the first and second switching modes can save the second node's energy consumption, conserve power, and collect energy for charging, thereby supporting a longer duration of random access procedures.

[0084] In some embodiments, the first signal includes a paging signal, and further includes: the received paging signal is the last paging signal among N paging signals, and the time domain resource index determined from the time domain resource index range of the paging signal is 0, maintaining the first state and sending a third signal, wherein the third signal includes a fixed identification number or a temporary identification number of the second node.

[0085] In this embodiment of the application, if the paging signal received by the second node is the last paging signal among N paging signals, and the time-domain resource index determined from the time-domain resource index range is 0, then the second node maintains the first state and sends a third signal. The third signal includes the second node's fixed identification number or temporary identification number. The fixed identification number includes the second node's permanent identification number (ID) such as electronic product code or unique identification code. The temporary identification number contains a random number generated by the second node.

[0086] In some other embodiments, the first signal includes a paging signal, and further includes:

[0087] The received paging signal is the last paging signal among N paging signals, and the time-domain resource index determined from the time-domain resource index range of the paging signal is less than the first threshold and greater than 0. The first state is maintained while receiving the second signal.

[0088] Specifically, if the paging signal received by the second node is the last paging signal among N paging signals, and the time-domain resource index determined from the time-domain resource index range is less than the first threshold and greater than 0, then the second node maintains the first state and receives the second signal.

[0089] In some embodiments, the method further includes: receiving a first signal based on a first switching mode; if the first signal is not received, but a second signal or a preamble sequence contained in the second signal is received, switching from the first switching mode to a second switching mode; wherein the first switching mode is a switch between a first state and a second state, and the second switching mode is a switch between a first state and a third state.

[0090] Specifically, the second node receives the first signal based on the first switching mode. If the second node does not receive the first signal but receives the second signal or the preamble contained in the second signal, it switches from the first switching mode to the second switching mode. The first switching mode is a switch between the first state and the second state. In the second state, the second node cannot receive or send signals and cannot run the clock.

[0091] In some embodiments of the application, it also includes:

[0092] Receive delay indication information and determine the start time of the next first state based on the delay indication information; wherein the delay indication information includes at least one of the following:

[0093] The delay indication information indicates the transmission delay of the next signal sent by the first node to the second node;

[0094] The delay indication information indicates the switching delay for the second node to switch to the first state next time;

[0095] The delay indication information indicates the duration of the third state of the second node.

[0096] Specifically, the second node receives the delay indication information sent by the first node. The first delay indication information indicates the transmission delay of the next signal sent by the first node to the second node. The transmission delay is the interval between the transmission time of the signal carrying the delay indication information and the start time of the next signal. The transmission time may include the start time or the end time.

[0097] Alternatively, the delay indication information indicates the switching delay of the second node to switch to the first state next time. The switching delay is the interval between the end time of the signal carrying the delay indication information and the start time of the next first state or the interval between the start time of the third state and the start time of the next first state.

[0098] Alternatively, the delay indication information indicates the duration of the third state of the second node.

[0099] In the embodiments of this application, the second node receives and / or transmits signals in the first state, and in the third state, the second node neither receives nor transmits signals, runs the clock, nor maintains memory.

[0100] In some embodiments, the method further includes: receiving first state ratio indication information, the first state ratio indication information indicating the ratio between the duration of the first state and the duration of the third state; or, the first state ratio indication information indicating the ratio between the duration of the first state and the duration of the second state; wherein, the second node receives and / or transmits signals in the first state, and the second node does not receive or transmit signals, runs the clock, or maintains memory in the third state, and the second duration is the start cycle of the first state.

[0101] Specifically, the second node can receive a first state ratio indication information sent by the first node, which indicates the ratio r between the duration of the first state and the duration of the third state; or, the first state ratio indication information indicates the ratio r between the duration of the first state and the second duration, and the second node can determine the duration of the third state based on the duration of the first state and the value of r; or, the second node can determine the second duration based on the duration of the first state and the value of r, and the second duration can be the first state start cycle of the second node, in which the second node receives and / or sends signals in the first state, and in the third state, the second node does not receive or send signals, runs the clock, and maintains memory.

[0102] In some embodiments, the method further includes: receiving a signal sent from the first node to the second node in the first state, and switching to the second state or the third state.

[0103] In this embodiment of the application, the second node receives a signal sent by the first node in the first state and can switch to the second state or the third state.

[0104] In some embodiments of the application, it further includes: receiving delay indication information;

[0105] It is determined that the transition from the third state to the first state will take place within a time no later than A+L, where A is the start time of the third state or the end time of the signal carrying the delay indication information, and L is the duration indicated by the delay indication information.

[0106] Specifically, the second node receives the delay indication information sent by the first node, determines the indication duration L through the delay indication information, and switches from the third state to the first state within a time no later than A+L, where A is the start time of the third state or the end time of the signal carrying the delay indication information.

[0107] In some embodiments, the method further includes: receiving a signal sent from a first node to a second node in a first state; determining that the start time of a third state is earlier than or equal to C+H, where C is the end time of the signal and H is a preset duration or the duration indicated by the first node.

[0108] Specifically, in the first state, the second node receives a signal sent from the first node to the second node, and determines the start time of the third state, i.e., the switching time from the first state to the third state, based on the end time of the signal. For example, the start time of the third state is earlier than or equal to C+H, where C is the end time of the signal received from the first node to the second node during the first state, and H is a preset duration, or H is the duration indicated by the first node.

[0109] Figure 3 This is a flowchart of another signal transmission method provided in an embodiment of this application. This embodiment is applicable to situations where a control device receives paging information. The method can be executed by a signal transmission device of the first node, which can be implemented through software and / or hardware methods, and is generally integrated into a reader / writer. Figure 3 As shown, the method provided in this application embodiment specifically includes the following steps:

[0110] Step 310: Send N first signals, where the value of N is greater than or equal to 1 (i.e., N is a positive integer).

[0111] In this embodiment, the number of first signals can be multiple, and each first signal can include first signal index indication information or first signal second quantity indication information. The first signal index indication information indicates the index (i.e., sequence number) of the first signal among N first signals. For example, in N first signals, the index indicated by the first signal index indication information of the i-th transmitted first signal is i-1, where 1 ≤ i ≤ N. When the first signal index indication information indicates i-1, the indicated first signal is the i-th first signal among the N first signals. The first signal second quantity indication information indicates the number of first signals transmitted after the first signal among the N first signals, i.e., the number of first signals remaining after the first signal. For example, in N first signals, the quantity indicated by the second quantity indication information of the i-th first signal is Ni, where 1 ≤ i ≤ N.

[0112] Furthermore, a time-domain resource is a time-domain unit, which may include a time slot (slot) or an access opportunity in the slot-ALOHA or Q-selection algorithm. The durations of different time-domain resources may be equal or unequal. The start or end of a time-domain resource can be determined according to a second signal. It can be understood that each second signal corresponds to a time-domain resource, and each time the first node sends a second signal, it indicates the start of a new time-domain resource. This second signal can be used to trigger the second node to decrease the stored time-domain resource index.

[0113] In some embodiments, N first signals are transmitted within a first duration, which is equal to the time between the start time of the first first signal and the end time of the Nth first signal. The first duration can be a predefined value, or the first duration can be indicated by first duration indication information transmitted in the first signals.

[0114] Step 320: After N first signals, send a paging signal, wherein the paging signal includes time-domain resource range indication information, which indicates a time-domain resource index range. The time-domain resource index range is used by the second node to determine and store a time-domain resource index within the time-domain resource index range.

[0115] Specifically, after sending N first signals, the first node can send a paging signal. The paging information may include time-domain resource range indication information, which indicates a time-domain resource index range. The time-domain resource index range is used by the second node to determine and store a time-domain resource index within the time-domain resource index range.

[0116] In some embodiments, the first signal includes a synchronization signal, which includes a first signal index indication or a first signal second quantity indication; wherein the first signal index indication is used to indicate the index of the first signal among N first signals; and the first signal second quantity indication is used to indicate the number of first signals sent after the first signal among the N first signals.

[0117] In some embodiments, the first signal includes a synchronization sequence that is different from the preamble sequence included in the other signals.

[0118] Specifically, the first signal may include a synchronization sequence, which is different from the preamble sequence included in other signals, and the second node can distinguish whether the received sequence is a synchronization sequence or a preamble sequence.

[0119] In some applications, N first signals are transmitted periodically.

[0120] In some embodiments, the interval between the start times of two adjacent first signals among the N first signals is less than or equal to t1-t2, where t1 is the duration of the first state of the second node, and t2 is the transmission duration of one of the N first signals, wherein the second node receives and / or transmits signals in the first state.

[0121] Figure 4This is a flowchart of another signal receiving method provided in an embodiment of this application. This embodiment is applicable to situations where a control device receives paging information. The method can be executed by a signal receiving device of a second node, which can be implemented through software and / or hardware methods and is generally integrated into a terminal device. Figure 4 As shown, the method provided in this application embodiment specifically includes the following steps:

[0122] Step 410: Receive at least one of the N first signals sent by the first node.

[0123] It should be noted that N is a positive integer.

[0124] Specifically, the second node can receive one of the N first signals transmitted by the first node, and the other first signals do not need to be received.

[0125] Step 420: After the end time of the last first signal among the N first signals, receive a paging signal. The paging signal includes time-domain resource range indication information. The time-domain resource range indication information indicates a time-domain resource index range. The time-domain resource index range is used by the second node to determine and store a time-domain resource index within the time-domain resource index range.

[0126] Specifically, the second node can receive a paging signal after the end time of the last first signal among N first signals. This paging signal can be indicated by time-domain resource range indication information, which indicates a time-domain resource index range. The second node can determine and store a time-domain resource index within the time-domain resource index range.

[0127] In some embodiments, the first signal includes a synchronization signal, which includes a first signal index indication or a first signal second quantity indication; wherein the first signal index indication is used to indicate the index of the first signal among N first signals; and the first signal second quantity indication is used to indicate the number of first signals sent after the first signal among the N first signals.

[0128] In some embodiments of the application, determining the end time of the last first signal among N first signals includes at least one of the following:

[0129] The end time of the last first signal among the N first signals is determined based on the index of the received first signal among the N first signals and the value of N.

[0130] The end time of the last first signal among the N first signals is determined based on the index of the received first signal among the N first signals and the first duration, wherein the first duration is equal to the interval between the start time of the first first signal and the end time of the Nth first signal.

[0131] The end time of the last first signal among the N first signals is determined by the number of first signals sent after the first signal received.

[0132] Based on the above-described embodiments, the end time of the last first signal among the N first signals includes one of the following:

[0133] t n,end +(N-1-n)*T;t n,start +Pn*T;t end +K*T;

[0134] Where n is the index of the first signal received by the second node, 0≤n≤N-1, t n,start Let t be the start time of the first signal corresponding to index n. n,end Let P be the end time of the first signal corresponding to index n, P be the first duration, T be the transmission period of N first signals, K be the number of first signals sent after the received first signal among the N first signals, and t be the number of first signals sent among the N first signals. end Let be the end time of the first signal received among N first signals. The first duration is equal to the interval between the start time of the first first signal and the end time of the Nth first signal.

[0135] In some embodiments, after receiving a first signal, the second node determines the transmission time of the last first signal among the N first signals based on the index of the received first signal among N first signals and the value of N. Specifically, the start time of the last first signal is determined as t. n,start +(N-1-n)*T or determine the end time of the last first signal as t n,end +(N-1-n)*T, where n is the index of the first signal received by the second node, 0≤n≤N-1, t n,start Let t be the start time of the first signal at index n. n,end Let n be the end time of the first signal, and T be the transmission period of the first signal.

[0136] In other embodiments, the end time of the last first signal among the N first signals is determined based on the index of the received first signal among the N first signals and the first duration. Specifically, the end time of the last first signal is determined as t. n,start+Pn*T, where n is the index of the first signal received by the second node, 0≤n≤N-1, t n,start Let P be the start time of the first signal with index n, P be the first duration, and T be the transmission period of the first signal. The first duration is equal to the interval between the start time of the first first signal and the end time of the Nth first signal.

[0137] In other embodiments, after receiving a first signal, the second node determines the transmission time of the last first signal among the N first signals based on the number of first signals sent after the received first signal. Specifically, the start time of the last first signal is determined as t. start +K*T or determine the end time of the last first signal as t end +K*T, where K is the number of first signals sent after the first signal out of N first signals, and t start t is the start time of the first signal. end Let T be the end time of the first signal, and T be the transmission period of the first signal.

[0138] In one exemplary embodiment, a signal transmission and reception method is proposed, comprising:

[0139] Step 1: The first node sends N first signals, which are paging signals, and N is greater than or equal to 1.

[0140] In this embodiment, the first signal includes first signal index indication information or first signal second quantity indication information.

[0141] The first signal index indication information is used to indicate the index (i.e., sequence number) of the first signal among N first signals. For example, among N first signals, the index indicated by the first signal index indication information of the i-th transmitted first signal is i-1, where 1≤i≤N.

[0142] The second quantity indication information of the first signal is used to indicate the number of first signals sent after the first signal among N first signals, that is, the number of first signals remaining after the first signal. For example, among N first signals, the quantity indicated by the second quantity indication information of the i-th first signal is Ni, 1≤i≤N.

[0143] In some embodiments, N is greater than 1, and the first signals are transmitted periodically among the N first signals, with a transmission period of T. That is, the transmission time interval between the start times of every two adjacent first signals is T, where the transmission time of the two first signals is either the start time of the two first signals or the end time of the two first signals. T is a predefined value, or T is indicated by first signal period indication information; exemplaryly, the first signal period indication information is transmitted in the first signals.

[0144] In some embodiments, N first signals are transmitted within a first duration. As one possible implementation, the first duration is equal to the interval between the start time of the first first signal and the end time of the Nth first signal. The first duration is a predefined value, or it is indicated by first duration indication information; exemplaryly, the first duration indication information is transmitted within the first signals.

[0145] In this embodiment, N is a predefined value, or the value of N is indicated by the first signal and the first quantity indication information. Before the random access process, by sending multiple first signals, more second nodes can receive the paging signal and enter the random access process, thereby improving the access efficiency of the system.

[0146] In this embodiment, the first signal is a paging message, which also includes time-domain resource range indication information. Therefore, the first signal includes first signal index indication information and time-domain resource range indication information, or the first signal includes first signal second quantity indication information and time-domain resource range indication information.

[0147] The time-domain resource range indication information directly or indirectly indicates a time-domain resource index range. A time-domain resource index range can be determined based on the time-domain resource range indication information. The time-domain resource index range is used by the second node to determine a time-domain resource index within the time-domain resource index range and to store the time-domain resource index. The time-domain resource index can also be called a time-domain resource value. For example, if the time-domain resource index range is determined to be from time-domain resource index 0 to S-1 based on the time-domain resource range indication information, the second node randomly selects a time-domain resource index within the range of time-domain resource index 0 to S-1 and stores it.

[0148] A time-domain resource is a time-domain unit, such as a slot or access opportunity in a slot-ALOHA or Q-selection algorithm. The durations of different time-domain resources can be equal or unequal, and the start or end of a time-domain resource can be determined by a second signal. It can be understood that each second signal corresponds to a time-domain resource, and each time the first node sends a second signal, it indicates the start of a new time-domain resource.

[0149] In this embodiment, N paging signals correspond to one round of random access. After the N paging signals are sent, different second nodes access the system on their respective determined time-domain resources. The random access process is the same as the inventory process.

[0150] Step 2: The second node receives the first signal.

[0151] In this embodiment, a second node receives one of the N first signals, and the remaining first signals do not need to be received.

[0152] In some embodiments, the second node includes at least one of three states: a first state, a second state, and a third state. In the first state, the second node can receive and transmit signals; in the second state, the second node cannot receive or transmit signals and cannot run a clock; in the third state, the second node cannot receive or transmit signals but can run a clock and maintain memory. Because signal transmission and reception are not required, the second and third states conserve the second node's energy, retain power, and can also collect energy for charging. In the first state, the second node can receive a first signal, and upon receiving a first signal, it can switch to the third state. In a specific example, the first state can be called the ON state, the second state can be called the OFF state, and the third state can be called the SLEEP state.

[0153] In some embodiments, the second node receives a first signal based on a first switching mode. After receiving the first signal, it switches from the first switching mode to a second switching mode. The first switching mode is a switch between a first state and a second state, and the second switching mode is a switch between a first state and a third state. For example, the switching period of the first switching mode is longer than the switching period of the second switching mode. Because the second node does not need to transmit or receive signals in the second or third state, the first and second switching modes can save the second node's energy consumption, conserve power, and also collect energy for charging, thereby supporting a longer duration of random access procedures.

[0154] In some embodiments, among the N first signals sent by the first node, the time interval between the start times of two adjacent first signals is less than or equal to t1-t2, where t1 is the duration of the first state and t2 is the transmission duration of a first signal. This ensures that the duration of the first state of the second node covers at least one complete first signal, which facilitates the second node in receiving the first signal.

[0155] In some embodiments, the duration of the first state is a predefined duration, or the duration of the first state is indicated by a first state duration indication information. The first node sends the first state duration indication information, and exemplarily, the first state duration indication information is sent in a paging signal, a synchronization signal, a second signal, or a fourth signal.

[0156] In this embodiment, after receiving a first signal, the second node can determine the transmission time of the last first signal among N first signals. The transmission time of the last first signal is either the start time or the end time of the last first signal.

[0157] As one possible implementation, after receiving a first signal, the second node determines the transmission time of the last first signal among the N first signals based on the index of the first signal among the N first signals and the value of N. Specifically, the start time of determining the last first signal is t. n,start +(N-1-n)*T or determine the end time of the last first signal as t n,end +(N-1-n)*T, where n is the index of the first signal received by the second node, 0≤n≤N-1, t n,start Let t be the start time of the first signal at index n. n,end Let n be the end time of the first signal, and T be the transmission period of the first signal.

[0158] As another possible implementation, after receiving a first signal, the second node determines the end time of the last first signal among the N first signals based on the index of the first signal among the N first signals and the first duration. Specifically, the end time of the last first signal is determined as t. n,start +Pn*T, where n is the index of the first signal received by the second node, 0≤n≤N-1, t n,start Let n be the start time of the first signal, P be the first duration, and T be the transmission period of the first signal.

[0159] As another possible implementation, after receiving a first signal, the second node determines the transmission time of the last first signal among the N first signals based on the number of first signals sent after the first signal. Specifically, the start time of the last first signal is determined as t. start +K*T or determine the end time of the last first signal as t end +K*T, where K is the number of first signals sent after the first signal out of N first signals, and t start t is the start time of the first signal. end Let T be the end time of the first signal, and T be the transmission period of the first signal.

[0160] In this embodiment, after receiving the paging signal, the second node determines a time-domain resource index range based on the time-domain resource range indication information in the paging signal, determines a time-domain resource index within the time-domain resource index range and stores it, for example, randomly selects a time-domain resource index from the time-domain resource index range and stores it.

[0161] Step 3: After sending N paging signals, the first node sends a second signal, which triggers the second node to reduce the stored time-domain resource index.

[0162] Among them, the time-domain resource index is the time-domain resource value or the time-domain resource sequence number.

[0163] In a specific example, the second node receives the second signal or sends the third signal after the end time of the last paging signal out of N paging signals.

[0164] In some embodiments, the second node receiving a second signal or sending a third signal includes: if the time-domain resource index determined by the second node within the time-domain resource index range is greater than 0, then receiving the second signal; each time the second signal is received, the stored time-domain resource index is decreased until the stored time-domain resource index is reduced to 0, at which point the third signal is sent; if the time-domain resource index determined by the second node within the time-domain resource index range is equal to 0, then sending the third signal. The third signal includes the second node's temporary identifier (ID) or fixed identifier.

[0165] In some embodiments, during the four-step access process, after sending N paging signals, or after sending a second signal, the first node can detect a third signal sent by the second node, which contains the second node's temporary identification number. If the third signal is correctly decoded, the first node sends a fourth signal, which contains confirmation information for the third signal. After receiving the confirmation information for the third signal, the second node sends a fifth signal, which contains the second node's fixed identification number, which can be a permanent ID of the second node such as an electronic product code or a unique identifier. The first node receives the fifth signal. Thus, the four-step access process of the second node is completed within one time domain resource. Afterward, the first node can send the next first signal or paging signal to initiate the next time domain resource.

[0166] In some embodiments, during the two-step access process, after sending N paging signals, or after sending a second signal, the first node can detect a third signal sent by the second node, the third signal containing the second node's fixed identification number; the first node receives the third signal. Thus, within one time domain resource, the two-step access process of the second node is completed. Afterwards, the first node can send the next first signal or paging signal to initiate the next time domain resource.

[0167] The temporary identification number is a temporary identifier for a second node; for example, it may contain a random number generated by the second node. In a specific example, the third signal is Message 1 (Msg1) in the Ambient Internet of Things (Ambient IoT). The permanent identification number can be a permanent ID of the second node, such as an electronic product code or a unique identifier.

[0168] In a specific example, in Ambient IoT, the third signal is message 1 (Message1, Msg1) in the access process, the fourth signal is message 2 (Message2, Msg2) in the access process, and the fifth signal is message 3 (Message3, Msg3) in the access process.

[0169] In some embodiments, if the time-domain resource index stored in the second node is greater than or equal to the first value, the second node receives the second signal based on the second switching mode.

[0170] In some embodiments, if the time-domain resource index stored in the second node is less than the first value, the second node maintains the first state to receive the second signal.

[0171] The first value is a predefined value, or the first value is indicated in the paging signal or the second signal.

[0172] In some embodiments, if the paging signal received by the second node is the last paging signal among N paging signals, and the time-domain resource index determined from the time-domain resource index range is 0, then the second node maintains the first state and sends the third signal.

[0173] In some embodiments, if the paging signal received by the second node is the last paging signal among N paging signals, and the time-domain resource index determined from the time-domain resource index range is less than a first threshold and greater than 0, then the second node maintains the first state and receives the second signal.

[0174] In some embodiments, the second node receives the first signal based on a first switching mode. If the second node does not receive the first signal but receives a target signal or a preamble contained in the target signal, it switches from the first switching mode to a second switching mode. The first switching mode is a switch between a first state and a second state, and the second switching mode is a switch between a first state and a third state. The target signal is a second signal or a fourth signal.

[0175] One possible implementation involves the first node sending delay indication information. This delay indication information indicates the transmission delay of the next signal sent by the first node to the second node, where the transmission delay is the interval between the transmission time (start or end time) of the signal carrying the delay indication information and the start time of the next signal. Alternatively, the delay indication information indicates the switching delay of the second node's next switch to the first state, where the switching delay is the interval between the end time of the signal carrying the delay indication information and the start time of the next first state, or the interval between the start time of the third state and the start time of the next first state. Or, the delay indication information indicates the duration of the second node's third state. The second node determines the time to switch to the first state (i.e., the start time of the first state) based on the delay indication information. The time to switch to the first state is earlier than or equal to the start time of the next signal sent by the first node to the second node. In a specific example, if the delay indication information indicates a duration of L, then the second node switches from the third state to the first state no later than A+L, where A is the start time of the third state or the end time of the signal carrying the delay indication information. The delay indication information is sent in at least one of the following signals: synchronization signal, paging signal, second signal, and fourth signal.

[0176] Another possible implementation involves the first node sending a first state ratio indication information, which indicates the ratio r between the duration of the first state and the duration of a second state. Alternatively, the first state ratio indication information indicates the ratio r between the duration of the first state and a second duration. The second node can determine the duration of the third state based on the duration of the first state and the value of r. The third state ratio indication information is sent in at least one of the following signals: a synchronization signal, a paging signal, a second signal, and a fourth signal.

[0177] One possible implementation is that the second node selects a time-domain resource index from the time-domain resource index range based on its power status (remaining power). For example, if the second node has a small remaining power, a larger time-domain resource index is selected from the range; if the second node has a large remaining power, a smaller time-domain resource index is selected from the range.

[0178] One possible implementation involves a second node reporting power indication information, which indicates at least one of the following: duration of a second state, duration of a third state, time of the next switch to a first state, remaining power, or low power indication. The first node receives the power indication information and, based on this information, instructs the second node on the time of the next switch to the first state or the start time of the next signal. In a specific example, the second node sends a low power indication signal, which contains a predefined sequence (e.g., a fixed-format signal or a fixed bit sequence) but does not contain data. If the first node receives the predefined sequence but does not receive data, it can determine that the second node has low power and instruct the second node on the time of the next switch to the first state or the start time of the next signal.

[0179] When a second node receives a signal sent by a first node, it indicates that the second node has correctly decoded the signal or detected the signal; when a second node receives a synchronization sequence or preamble sequence, it indicates that the second node has detected the synchronization sequence or preamble sequence. The signal sent by the first node can be a paging signal, a synchronization signal, a second signal, a fourth signal, or other possible signals.

[0180] In one exemplary embodiment, this embodiment provides a signal transmission and reception method, including:

[0181] Step 1: The first node sends N first signals, which are synchronization signals, and N is greater than or equal to 1.

[0182] In this embodiment, the first signal includes first signal index indication information or first signal second quantity indication information.

[0183] The first signal index indication information is used to indicate the index (i.e., sequence number) of the first signal among N first signals. For example, among N first signals, the index indicated by the first signal index indication information of the i-th transmitted first signal is i-1, where 1≤i≤N.

[0184] The second quantity indication information of the first signal is used to indicate the number of first signals sent after the first signal among N first signals, that is, the number of first signals remaining after the first signal. For example, among N first signals, the quantity indicated by the second quantity indication information of the i-th first signal is Ni, 1≤i≤N.

[0185] In some embodiments, N is greater than 1, and the first signals are transmitted periodically among the N first signals, with a transmission period of T. That is, the transmission time interval between the start times of every two adjacent first signals is T, where the transmission time of the two first signals is either the start time of the two first signals or the end time of the two first signals. T is a predefined value, or T is indicated by first signal period indication information; exemplaryly, the first signal period indication information is transmitted in the first signals.

[0186] In some embodiments, N first signals are transmitted within a first duration. As one possible implementation, the first duration is equal to the interval between the start time of the first first signal and the end time of the Nth first signal. The first duration is a predefined value, or it is indicated by first duration indication information; exemplaryly, the first duration indication information is transmitted within the first signals.

[0187] In this embodiment, N is a predefined value, or the value of N is indicated by the first signal and the first quantity indication information. Before the random access process, by sending multiple first signals, more second nodes can receive the paging signal and enter the random access process, thereby improving the access efficiency of the system.

[0188] Step 2: The second node receives the first signal.

[0189] In this embodiment, a second node receives one of the N first signals, and the remaining first signals do not need to be received.

[0190] In some embodiments, the second node includes at least one of three states: a first state, a second state, and a third state. In the first state, the second node can receive and transmit signals; in the second state, the second node cannot receive or transmit signals and cannot run a clock; in the third state, the second node cannot receive or transmit signals but can run a clock and maintain memory. Because signal transmission and reception are not required, the second and third states conserve the second node's energy, retain power, and allow it to collect energy for charging. In the first state, the second node can receive a first signal; upon receiving a first signal, it can switch to the third state.

[0191] In some embodiments, the second node receives a first signal based on a first switching mode. After receiving the first signal, it switches from the first switching mode to a second switching mode. The first switching mode is a switch between a first state and a second state, and the second switching mode is a switch between a first state and a third state. For example, the switching period of the first switching mode is longer than the switching period of the second switching mode. Because the second node does not need to transmit or receive signals in the second or third state, the first and second switching modes can save the second node's energy consumption, conserve power, and also collect energy for charging, thereby supporting a longer duration of random access procedures.

[0192] In some embodiments, among the N first signals sent by the first node, the time interval between the start times of two adjacent first signals is less than or equal to t1-t2, where t1 is the duration of the first state and t2 is the transmission duration of a first signal. This ensures that the duration of the first state of the second node covers at least one complete first signal, which facilitates the second node in receiving the first signal.

[0193] In some embodiments, the duration of the first state is a predefined duration, or the duration of the first state is indicated by a first state duration indication information. The first node sends the first state duration indication information, and exemplarily, the first state duration indication information is sent in a paging signal, a synchronization signal, a second signal, or a fourth signal.

[0194] In this embodiment, after receiving a first signal, the second node can determine the transmission time of the last first signal among N first signals. The transmission time of the last first signal is either the start time or the end time of the last first signal.

[0195] As one possible implementation, after receiving a first signal, the second node determines the transmission time of the last first signal among the N first signals based on the index of the first signal among the N first signals and the value of N. Specifically, the start time of determining the last first signal is t. n,start +(N-1-n)*T or determine the end time of the last first signal as t n,end +(N-1-n)*T, where n is the index of the first signal received by the second node, 0≤n≤N-1, t n,start Let t be the start time of the first signal at index n. n,end Let n be the end time of the first signal, and T be the transmission period of the first signal.

[0196] As another possible implementation, after receiving a first signal, the second node determines the end time of the last first signal among the N first signals based on the index of the first signal among the N first signals and the first duration. Specifically, the end time of the last first signal is determined as t. n,start +Pn*T, where n is the index of the first signal received by the second node, 0≤n≤N-1, t n,start Let n be the start time of the first signal, P be the first duration, and T be the transmission period of the first signal.

[0197] As another possible implementation, after receiving a first signal, the second node determines the transmission time of the last first signal among the N first signals based on the number of first signals sent after the first signal. Specifically, the start time of the last first signal is determined as t. start +K*T or determine the end time of the last first signal as t end +K*T, where K is the number of first signals sent after the first signal out of N first signals, and t start t is the start time of the first signal. end Let T be the end time of the first signal, and T be the transmission period of the first signal.

[0198] Step 3: After sending N synchronization signals, the first node sends a paging signal, which contains time-domain resource range indication information.

[0199] In this embodiment, the time-domain resource range indication information directly or indirectly indicates a time-domain resource index range. A time-domain resource index range can be determined based on the time-domain resource range indication information. The time-domain resource index range is used by the second node to determine a time-domain resource index within the time-domain resource index range and to store the time-domain resource index. The time-domain resource index can also be called a time-domain resource value. For example, if the time-domain resource index range is determined to be from time-domain resource index 0 to S-1 based on the time-domain resource range indication information, the second node randomly selects a time-domain resource index within the range of time-domain resource index 0 to S-1 and stores it.

[0200] In this embodiment, a time-domain resource is a time-domain unit, such as a slot or an access occasion in the slot-ALOHA or Q-selection algorithm. The durations of different time-domain resources can be equal or unequal, and the start or end of a time-domain resource can be determined based on a second signal. It can be understood that each second signal corresponds to a time-domain resource, and each time the first node sends a second signal, it indicates the start of a new time-domain resource.

[0201] In this embodiment, the paging signal corresponds to a round of random access. After the paging signal, different second nodes access the system on their respective determined time-domain resources. The random access process is the same as the inventory process.

[0202] Step 4: The second node receives the paging signal.

[0203] In this embodiment, the second node receives the paging signal sent by the first node after the end time of the last first signal among the N first signals.

[0204] In this embodiment, after receiving the paging signal, the second node determines a time-domain resource index range based on the time-domain resource range indication information in the paging signal, determines a time-domain resource index within the time-domain resource index range and stores it, for example, randomly selects a time-domain resource index from the time-domain resource index range and stores it.

[0205] Step 5: The first node sends a second signal, which triggers the second node to reduce the stored time-domain resource index.

[0206] In this embodiment, after sending a paging signal, the first node sends a second signal, wherein the time-domain resource index is either the time-domain resource value or the time-domain resource sequence number.

[0207] In some embodiments, after determining and storing a time-domain resource index within the time-domain resource index range, the second node receives a second signal or sends a third signal.

[0208] In some embodiments, the second node receiving a second signal or sending a third signal includes: if the time-domain resource index determined by the second node within the time-domain resource index range is greater than 0, then receiving the second signal; each time the second signal is received, the stored time-domain resource index is decreased until the stored time-domain resource index is reduced to 0, at which point the third signal is sent; if the time-domain resource index determined by the second node within the time-domain resource index range is equal to 0, then sending the third signal. The third signal includes the second node's temporary identifier (ID) or fixed identifier.

[0209] In some embodiments, during the four-step access process, after sending N paging signals, or after sending a second signal, the first node can detect a third signal sent by the second node, which contains the second node's temporary identification number. If the third signal is correctly decoded, the first node sends a fourth signal, which contains confirmation information for the third signal. After receiving the confirmation information for the third signal, the second node sends a fifth signal, which contains the second node's fixed identification number, which can be a permanent ID of the second node such as an electronic product code or a unique identifier. The first node receives the fifth signal. Thus, the four-step access process of the second node is completed within one time domain resource. Afterward, the first node can send the next first signal or paging signal to initiate the next time domain resource.

[0210] In some embodiments, during the two-step access process, after sending N paging signals, or after sending a second signal, the first node can detect a third signal sent by the second node, the third signal containing the second node's fixed identification number; the first node receives the third signal. Thus, within one time domain resource, the two-step access process of the second node is completed. Afterwards, the first node can send the next first signal or paging signal to initiate the next time domain resource.

[0211] The temporary identification number is a temporary identifier for a second node; for example, it may contain a random number generated by the second node. In a specific example, the third signal is Message 1 (Msg1) in the Ambient Internet of Things (Ambient IoT). The permanent identification number can be a permanent ID of the second node, such as an electronic product code or a unique identifier.

[0212] In a specific example, in Ambient IoT, the third signal is message 1 (Message1, Msg1) in the access process, the fourth signal is message 2 (Message2, Msg2) in the access process, and the fifth signal is message 3 (Message3, Msg3) in the access process.

[0213] In some embodiments, if the time-domain resource index stored in the second node is greater than or equal to the first value, the second node receives the second signal based on the second switching mode.

[0214] In some embodiments, if the time-domain resource index stored in the second node is less than the first value, the second node maintains the first state to receive the second signal.

[0215] The first value is a predefined value, or the first value is indicated in the paging signal or the second signal.

[0216] In some embodiments, if the first signal received by the second node is the last first signal among N first signals, the second node maintains the first state to receive the paging signal.

[0217] In some embodiments, the second node receives the first signal based on a first switching mode. If the second node does not receive the first signal but receives a target signal or a preamble contained in the target signal, it switches from the first switching mode to a second switching mode. The first switching mode is a switch between a first state and a second state, and the second switching mode is a switch between a first state and a third state. The target signal is a paging signal, a second signal, or a fourth signal.

[0218] One possible implementation involves the first node sending delay indication information. This delay indication information indicates the transmission delay of the next signal sent by the first node to the second node, where the transmission delay is the interval between the transmission time (start or end time) of the signal carrying the delay indication information and the start time of the next signal. Alternatively, the delay indication information indicates the switching delay of the second node's next switch to the first state, where the switching delay is the interval between the end time of the signal carrying the delay indication information and the start time of the next first state, or the interval between the start time of the third state and the start time of the next first state. Or, the delay indication information indicates the duration of the second node's third state. The second node determines the time to switch to the first state (i.e., the start time of the first state) based on the delay indication information. The time to switch to the first state is earlier than or equal to the start time of the next signal sent by the first node to the second node. In a specific example, if the delay indication information indicates a duration of L, then the second node switches from the third state to the first state no later than A+L, where A is the start time of the third state or the end time of the signal carrying the delay indication information. The delay indication information is sent in at least one of the following signals: synchronization signal, paging signal, second signal, and fourth signal.

[0219] Another possible implementation involves the first node sending a first state ratio indication information, which indicates the ratio r between the duration of the first state and the duration of a second state. Alternatively, the first state ratio indication information indicates the ratio r between the duration of the first state and a second duration. The second node can determine the duration of the third state based on the duration of the first state and the value of r. The third state ratio indication information is sent in at least one of the following signals: a synchronization signal, a paging signal, a second signal, and a fourth signal.

[0220] One possible implementation is that the second node selects a time-domain resource index from the time-domain resource index range based on its power status (remaining power). For example, if the second node has a small remaining power, a larger time-domain resource index is selected from the range; if the second node has a large remaining power, a smaller time-domain resource index is selected from the range.

[0221] One possible implementation involves the second node reporting power indication information, which indicates at least one of the following: duration of the second state, duration of the third state, time of the next switch to the first state, remaining power, or low power indication. The first node receives the power indication information and, based on this information, instructs the second node on the time of the next switch to the first state or the start time of the next signal.

[0222] When a second node receives a signal sent by a first node, it indicates that the second node has correctly decoded the signal or detected the signal; when a second node receives a synchronization sequence or preamble sequence, it indicates that the second node has detected the synchronization sequence or preamble sequence. The signal sent by the first node can be a paging signal, a synchronization signal, a second signal, a fourth signal, or other possible signals.

[0223] This embodiment proposes a signal transmission and reception method, including:

[0224] Step 1: The first node sends N first signals, which are synchronization sequences, and N is greater than or equal to 1.

[0225] In this embodiment, the synchronization sequence can be a predefined binary bit sequence or a predefined signal pattern.

[0226] In this embodiment, the paging signal, the second signal, and the fourth signal sent by the first node all contain a preamble sequence. The preamble sequence can be used for timing synchronization of the signals.

[0227] In this embodiment, the synchronization sequence is different from the preamble sequence. The second node can distinguish whether the received sequence is a synchronization sequence or a preamble sequence.

[0228] In some embodiments, N is greater than 1, and the first signals are transmitted periodically among the N first signals, with a transmission period of T. That is, the transmission time interval between the start time of each two adjacent first signals is T, where the transmission time between the two first signals is either the start time of the two first signals or the end time of the two first signals, and T is a predefined value.

[0229] In some embodiments, N first signals are transmitted within a first duration. As one possible implementation, the first duration is equal to the interval between the start time of the first first signal and the end time of the Nth first signal, and the first duration is a predefined value.

[0230] In this embodiment, N is a predefined value. Before the random access process, multiple first signals are sent so that more second nodes can receive the paging signal and enter the random access process, thereby improving the system's access efficiency.

[0231] Step 2: The second node receives the first signal.

[0232] In this embodiment, a second node receives one of the N first signals, and the remaining first signals do not need to be received.

[0233] In some embodiments, the second node includes at least one of a first state, a second state, a third state, and a fourth state. In the first state, the second node can receive and transmit signals; in the second state, the second node cannot receive or transmit signals and cannot operate a clock; in the third state, the second node cannot receive or transmit signals but can operate a clock and maintain memory; in the fourth state, the second node cannot process baseband signals or transmit signals but can operate a clock, maintain memory, and perform envelope detection. The second, third, and fourth states conserve the second node's energy, retain power, and can also collect energy for charging.

[0234] As one possible implementation, the second node receives a first signal (i.e., a synchronization sequence) in the first state. After receiving the first signal, it maintains the first state in order to receive the paging signal that the first node will send later.

[0235] As one possible implementation, the second node receives a first signal (i.e., a synchronization sequence) in the first state. After receiving a first signal, it switches to the fourth state and uses envelope detection to receive the preamble sequence of the paging signal. If the preamble sequence is received, it switches back to the first state and receives the paging signal data based on the first state.

[0236] As one possible implementation, the second node receives the first signal (i.e., the synchronization sequence) using envelope detection in the fourth state. After receiving the first signal, it remains in the fourth state and receives the preamble sequence of the paging signal using envelope detection. If the preamble sequence is received, it switches to the first state and receives the paging signal data based on the first state.

[0237] In some embodiments, among the N first signals sent by the first node, the time interval between the start times of two adjacent first signals is less than or equal to t1-t2, where t1 is the duration of the first state and t2 is the transmission duration of a first signal. This ensures that the duration of the first state of the second node covers at least one complete first signal, which facilitates the second node in receiving the first signal.

[0238] In some embodiments, the duration of the first state is a predefined duration, or the duration of the first state is indicated by a first state duration indication information. The first node sends the first state duration indication information, and exemplarily, the first state duration indication information is sent in a paging signal, a synchronization signal, a second signal, or a fourth signal.

[0239] Step 3: After sending N synchronization sequences, the first node sends a paging signal, which contains time-domain resource range indication information.

[0240] In this embodiment, the time-domain resource range indication information directly or indirectly indicates a time-domain resource index range. A time-domain resource index range can be determined based on the time-domain resource range indication information. The time-domain resource index range is used by the second node to determine a time-domain resource index within the time-domain resource index range and to store the time-domain resource index. The time-domain resource index can also be called a time-domain resource value. For example, if the time-domain resource index range is determined to be from time-domain resource index 0 to S-1 based on the time-domain resource range indication information, the second node randomly selects a time-domain resource index within the range of time-domain resource index 0 to S-1 and stores it.

[0241] In this embodiment, a time-domain resource is a time-domain unit, such as a slot or an access opportunity in the slot-ALOHA or Q-selection algorithm. The durations of different time-domain resources can be equal or unequal, and the start or end of a time-domain resource can be determined based on a second signal. It can be understood that each second signal corresponds to a time-domain resource, and each time the first node sends a second signal, it indicates the start of a new time-domain resource.

[0242] In this embodiment, the paging signal corresponds to a round of random access. After the paging signal, different second nodes access the system on their respective determined time-domain resources. The random access process is the same as the inventory process.

[0243] Step 4: The second node receives the paging signal.

[0244] In this embodiment, after receiving the paging signal, the second node determines a time-domain resource index range based on the time-domain resource range indication information in the paging signal, determines a time-domain resource index within the time-domain resource index range and stores it, for example, randomly selects a time-domain resource index from the time-domain resource index range and stores it.

[0245] Step 5: The first node sends a second signal, which triggers the second node to reduce the stored time-domain resource index.

[0246] Among them, the time-domain resource index is the time-domain resource value or the time-domain resource sequence number.

[0247] In some embodiments, after determining and storing a time-domain resource index within the time-domain resource index range, the second node receives a second signal or sends a third signal.

[0248] In some embodiments, the second node receiving a second signal or sending a third signal includes: if the time-domain resource index determined by the second node within the time-domain resource index range is greater than 0, then receiving the second signal; each time the second signal is received, the stored time-domain resource index is decreased until the stored time-domain resource index is reduced to 0, at which point the third signal is sent; if the time-domain resource index determined by the second node within the time-domain resource index range is equal to 0, then sending the third signal. The third signal includes the second node's temporary identifier (ID) or fixed identifier.

[0249] In some embodiments, during the four-step access process, after sending N paging signals, or after sending a second signal, the first node can detect a third signal sent by the second node, which contains the second node's temporary identification number. If the third signal is correctly decoded, the first node sends a fourth signal, which contains confirmation information for the third signal. After receiving the confirmation information for the third signal, the second node sends a fifth signal, which contains the second node's fixed identification number, which can be a permanent ID of the second node such as an electronic product code or a unique identifier. The first node receives the fifth signal. Thus, the four-step access process of the second node is completed within one time domain resource. Afterward, the first node can send the next first signal or paging signal to initiate the next time domain resource.

[0250] In some embodiments, during the two-step access process, after sending N paging signals, or after sending a second signal, the first node can detect a third signal sent by the second node, the third signal containing the second node's fixed identification number; the first node receives the third signal. Thus, within one time domain resource, the two-step access process of the second node is completed. Afterwards, the first node can send the next first signal or paging signal to initiate the next time domain resource.

[0251] The temporary identification number is a temporary identifier for a second node; for example, it may contain a random number generated by the second node. In a specific example, the third signal is Message 1 (Msg1) in the Ambient Internet of Things (Ambient IoT). The permanent identification number can be a permanent ID of the second node, such as an electronic product code or a unique identifier.

[0252] In a specific example, in Ambient IoT, the third signal is message 1 (Message1, Msg1) in the access process, the fourth signal is message 2 (Message2, Msg2) in the access process, and the fifth signal is message 3 (Message3, Msg3) in the access process.

[0253] In some embodiments, if the time-domain resource index stored in the second node is greater than or equal to the first value, the second node receives the second signal based on the second switching mode.

[0254] In some embodiments, if the time-domain resource index stored in the second node is less than the first value, the second node maintains the first state to receive the second signal.

[0255] The first value is a predefined value, or the first value is indicated in the paging signal or the second signal.

[0256] One possible implementation involves the first node sending delay indication information. This delay indication information indicates the transmission delay of the next signal sent by the first node to the second node, where the transmission delay is the interval between the transmission time (start or end time) of the signal carrying the delay indication information and the start time of the next signal. Alternatively, the delay indication information indicates the switching delay of the second node's next switch to the first state, where the switching delay is the interval between the end time of the signal carrying the delay indication information and the start time of the next first state, or the interval between the start time of the third state and the start time of the next first state. Or, the delay indication information indicates the duration of the second node's third state. The second node determines the time to switch to the first state (i.e., the start time of the first state) based on the delay indication information. The time to switch to the first state is earlier than or equal to the start time of the next signal sent by the first node to the second node. In a specific example, if the delay indication information indicates a duration of L, then the second node switches from the third state to the first state no later than A+L, where A is the start time of the third state or the end time of the signal carrying the delay indication information. The delay indication information is sent in at least one of the following signals: synchronization signal, paging signal, second signal, and fourth signal.

[0257] Another possible implementation involves the first node sending a first state ratio indication information, which indicates the ratio r between the duration of the first state and the duration of a second state. Alternatively, the first state ratio indication information indicates the ratio r between the duration of the first state and a second duration. The second node can determine the duration of the third state based on the duration of the first state and the value of r. The third state ratio indication information is sent in at least one of the following signals: a synchronization signal, a paging signal, a second signal, and a fourth signal.

[0258] One possible implementation is that the second node selects a time-domain resource index from the time-domain resource index range based on its power status (remaining power). For example, if the second node has a small remaining power, a larger time-domain resource index is selected from the range; if the second node has a large remaining power, a smaller time-domain resource index is selected from the range.

[0259] One possible implementation involves the second node reporting power indication information, which indicates at least one of the following: duration of the second state, duration of the third state, time of the next switch to the first state, remaining power, or low power indication. The first node receives the power indication information and, based on this information, instructs the second node on the time of the next switch to the first state or the start time of the next signal.

[0260] When a second node receives a signal sent by a first node, it indicates that the second node has correctly decoded the signal or detected the signal; when a second node receives a synchronization sequence or preamble sequence, it indicates that the second node has detected the synchronization sequence or preamble sequence. The signal sent by the first node can be a paging signal, a synchronization signal, a second signal, a fourth signal, or other possible signals.

[0261] In one exemplary implementation, a working state switching method is proposed for a second node, comprising: the second node switching between a first state and a second state.

[0262] In the first state, the second node can receive and send signals; in the second state, the second node cannot receive or send signals and cannot run its clock. During the second state, the second node can conserve energy, retain power, and also collect energy for charging.

[0263] The method described in this embodiment can be applied to the first switching mode in Embodiments 1 and 2.

[0264] In some embodiments, the duration t of the first state ON Determined based on the percentage of battery charge threshold of the second node.

[0265] In a specific example, the duration t of the first state ON = (Y% - X%) * C / P, where C is the available power of the second node when it is fully charged, P is the power consumption of the second node, Y% is the power percentage threshold of the second node when switching from the second state to the first state, and X% is the power percentage threshold of the second node when switching from the first state to the second state.

[0266] In a specific example, the duration t of the second state OFF The duration t is determined based on the power of energy harvesting. In a specific example, the duration t of the second state is... OFF =(Y%-X%)*C / (P) in *E). Where C is the available power of the second node in its fully charged state, P in E represents the power of energy harvesting, E represents the energy conversion efficiency, Y% represents the percentage threshold of the second node's energy when switching from the second state to the first state, and X% represents the percentage threshold of the second node's energy when switching from the first state to the second state.

[0267] Where X and Y are predefined values, for example, X% = 70%, Y% = 100%.

[0268] In a specific example, if the second node receives a signal sent from the first node to the second node in the first state, the second node switches to the second state. The signal sent by the first node includes at least one of the following: a paging signal, a synchronization signal, a second signal, and a fourth signal.

[0269] When a second node receives a signal sent by a first node, it indicates that the second node has correctly decoded the signal or detected the signal; when a second node receives a synchronization sequence or preamble sequence, it indicates that the second node has detected the synchronization sequence or preamble sequence. The signal sent by the first node can be a paging signal, a synchronization signal, a second signal, a fourth signal, or other possible signals.

[0270] This embodiment proposes a working state switching method, applied to a second node, including: the second node switching between a first state and a third state.

[0271] In the first state, the second node can receive and send signals; in the third state, the second node cannot receive or send signals, but can run the clock and maintain memory. During the second state, the second node can save energy, conserve power, and also collect energy for charging.

[0272] The method described in this embodiment can be applied to the second switching mode in the embodiments of this application.

[0273] In some embodiments, the duration of a first state is a predefined duration; or, the duration of a first state is indicated by first state duration indication information.

[0274] In some embodiments, when a signal sent by a first node to a second node is received in the first state, the second node switches to the third state. In this case, the first state may switch to the third state in advance, and the duration of the first state is less than or equal to a predefined duration or the duration of the first state duration indication information. The signal sent by the first node includes at least one of the following: a paging signal, a synchronization signal, a second signal, and a fourth signal.

[0275] In some embodiments, the duration of a third state is a predefined duration; or, the duration of a third state is indicated by third state duration indication information.

[0276] In some embodiments, the duration of the third state is determined based on the duration of the first state. In a specific example, the duration of the third state is equal to the duration of the first state divided by r, where r is the ratio of the duration of the first state to the duration of the third state, and r is a predefined value, or r is indicated by first state matching information. Exemplarily, the first state matching information is carried in at least one of the following signals: a synchronization signal, a paging signal, a second signal, and a fourth signal.

[0277] In some embodiments, the second node determines the start time of the first state according to at least one of the following two methods:

[0278] Method 1: The first node sends a delay indication message; after receiving the delay indication message in the first state, the second node switches to the third state, and switches back to the first state from the third state at a time no later than A+L, where A is the start time of the third state or the end time of the signal carrying the delay indication message, and L is the duration indicated by the delay indication message.

[0279] Method 2: Periodically switch to the first state with a second duration as the cycle, that is, the interval between the start times of adjacent first states is equal to the second duration. The start time of the (j+1)th first state is equal to B+U, where B is the start time of the j-th first state and U is the second duration. In a specific example, the second duration is less than or equal to the first duration of the embodiments of this application.

[0280] In some embodiments, the second node determines the start time of the third state according to at least one of the following methods:

[0281] Method 1: In the first state, the second node receives a signal sent from the first node to the second node, and determines the start time of the third state, i.e., the switching time from the first state to the third state, based on the end time of the signal. For example, the start time of the third state is earlier than or equal to C+H, where C is the end time of the signal received from the first node to the second node during the first state, and H is a preset duration, or H is the duration indicated by the first node.

[0282] Method 2: Periodically switch to the third state with the second duration as the cycle, that is, the interval between the start times of adjacent third states is equal to the second duration. In a specific example, the second duration is less than or equal to the first duration in the embodiments of this application.

[0283] When a second node receives a signal sent by a first node, it indicates that the second node has correctly decoded the signal or detected the signal; when a second node receives a synchronization sequence or preamble sequence, it indicates that the second node has detected the synchronization sequence or preamble sequence. The signal sent by the first node can be a paging signal, a synchronization signal, a second signal, a fourth signal, or other possible signals.

[0284] Figure 5 This is a schematic diagram of a signal transmitting device provided in an embodiment of this application. This device can execute the methods provided in any embodiment of this application, and possesses the corresponding functional modules and beneficial effects for executing the methods. This device can be implemented by software and / or hardware. For example... Figure 5 As shown, the apparatus provided in this application embodiment specifically includes:

[0285] The first transmitting module 510 is used to transmit N first signals. The first signals include time-domain resource range indication information and first signal index indication information, or the first signals include time-domain resource range indication information and first signal second quantity indication information. Wherein, the value of N is greater than or equal to 1. The time-domain resource range indication information indicates a time-domain resource index range. The time-domain resource index range is used by the second node to determine a time-domain resource index within the time-domain resource index range and store it. The first signal index indication information is used to indicate the index of the first signal among the N first signals. The first signal second quantity indication information is used to indicate the number of first signals transmitted after the first signal among the N first signals.

[0286] The second sending module 520 sends a second signal, which triggers the second node to reduce the stored time-domain resource index.

[0287] Figure 6 This is a schematic diagram of a signal receiving device provided in an embodiment of this application. This device can execute the methods provided in any embodiment of this application, and possesses the corresponding functional modules and beneficial effects for executing the methods. This device can be implemented by software and / or hardware. For example... Figure 6As shown, the apparatus provided in this application embodiment specifically includes:

[0288] The first receiving module 610 is configured to receive at least one of N first signals sent by the first node. The first signal includes time-domain resource range indication information and first signal index indication information, or the first signal includes time-domain resource range indication information and first signal second quantity indication information. Wherein, the value of N is greater than or equal to 1, the time-domain resource range indication information indicates a time-domain resource index range, the time-domain resource index range is used by the second node to determine a time-domain resource index within the time-domain resource index range and store it; the first signal index indication information is used to indicate the index of the first signal among the N first signals; the first signal second quantity indication information is used to indicate the number of first signals sent after the first signal among the N first signals.

[0289] The end time module 620 is used to determine the end time of the last first signal among N first signals.

[0290] The second receiving module 630 is used to receive a second signal after the end time of the last first signal, wherein the second signal is used to trigger the second node to decrease the stored time domain resource index.

[0291] Figure 7 This is a schematic diagram of another signal transmitting device provided in an embodiment of this application. This device can execute the methods provided in any embodiment of this application, and possesses the corresponding functional modules and beneficial effects for executing the methods. This device can be implemented by software and / or hardware. For example... Figure 7 As shown, the apparatus provided in this application embodiment specifically includes:

[0292] The first signal module 710 is used to send N first signals, where the value of N is greater than or equal to 1.

[0293] The paging signal module 720 is used to send a paging signal after N first signals. The paging signal includes time-domain resource range indication information, which indicates a time-domain resource index range. The time-domain resource index range is used by the second node to determine and store a time-domain resource index within the time-domain resource index range.

[0294] Figure 8 This is a schematic diagram of a signal receiving device provided in an embodiment of this application. This device can execute the methods provided in any embodiment of this application, and possesses the corresponding functional modules and beneficial effects for executing the methods. This device can be implemented by software and / or hardware. For example... Figure 8 As shown, the apparatus provided in this application embodiment specifically includes:

[0295] The first signal receiving module 810 is used to receive at least one of the N first signals sent by the first node.

[0296] The paging signal receiving module 820 is used to receive a paging signal after the end time of the last first signal among N first signals. The paging signal includes time-domain resource range indication information, which indicates a time-domain resource index range. The time-domain resource index range is used by the second node to determine and store a time-domain resource index within the time-domain resource index range.

[0297] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device includes a processor 10, a memory 11, an input device 12, and an output device 13; the number of processors 10 in the electronic device can be one or more. Figure 9 Taking a processor 10 as an example; in an electronic device, the processor 10, memory 11, input device 12, and output device 13 can be connected via a bus or other means. Figure 9 Taking the example of a connection between China and Israel via a bus.

[0298] The memory 11, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as the modules corresponding to the devices in the embodiments of this application. The processor 10 executes various functional applications and data processing of the electronic device by running the software programs, instructions, and modules stored in the memory 11, thereby implementing the methods described above.

[0299] The memory 11 may primarily include a program storage area and a data storage area. The program storage area may store the operating system and at least one application program required for a given function; the data storage area may store data created based on the use of the electronic device. Furthermore, the memory 11 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory, or other non-volatile solid-state storage device. In some instances, the memory 11 may further include memory remotely located relative to the processor 10, which can be connected to the electronic device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0300] Input device 12 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the electronic device. Output device 13 may include display devices such as a display screen.

[0301] This application also provides a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to perform a signal transmission method, the method comprising:

[0302] Send N first signals, each first signal containing time-domain resource range indication information and first signal index indication information, or each first signal containing time-domain resource range indication information and first signal second quantity indication information;

[0303] Wherein, the value of N is greater than or equal to 1, the time domain resource range indication information indicates a time domain resource index range, the time domain resource index range is used by the second node to determine a time domain resource index within the time domain resource index range and store it; the first signal index indication information is used to indicate the index of the first signal among the N first signals; the first signal second quantity indication information is used to indicate the number of first signals sent after the first signal among the N first signals;

[0304] A second signal is sent, which triggers the second node to decrease the stored time-domain resource index.

[0305] or,

[0306] The computer-executable instructions, when executed by a computer processor, are used to perform a signal receiving method, the method comprising:

[0307] Receive at least one of N first signals sent by the first node, wherein the first signal includes time domain resource range indication information and first signal index indication information or the first signal includes time domain resource range indication information and first signal second quantity indication information;

[0308] Wherein, the value of N is greater than or equal to 1, the time domain resource range indication information indicates a time domain resource index range, the time domain resource index range is used by the second node to determine a time domain resource index within the time domain resource index range and store it; the first signal index indication information is used to indicate the index of the first signal among the N first signals; the first signal second quantity indication information is used to indicate the number of first signals sent after the first signal among the N first signals;

[0309] Determine the end time of the last first signal among the N first signals;

[0310] After the end time of the last first signal, a second signal is received, wherein the second signal is used to trigger the second node to decrease the stored time-domain resource index.

[0311] or,

[0312] This application also provides a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to perform a signal transmission method, the method comprising:

[0313] Send N first signals, wherein the value of N is greater than or equal to 1;

[0314] Following the N first signals, a paging signal is sent, wherein the paging signal includes time-domain resource range indication information, the time-domain resource range indication information indicating a time-domain resource index range, the time-domain resource index range being used by the second node to determine and store a time-domain resource index within the time-domain resource index range.

[0315] or,

[0316] The computer-executable instructions, when executed by a computer processor, are used to perform a signal receiving method, the method comprising:

[0317] Receive at least one of the N first signals sent by the first node;

[0318] After the end time of the last first signal among the N first signals, a paging signal is received. The paging signal includes time-domain resource range indication information, which indicates a time-domain resource index range. The time-domain resource index range is used by the second node to determine and store a time-domain resource index within the time-domain resource index range.

[0319] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0320] It is worth noting that in the embodiments of the above-mentioned device, the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of each functional unit are only for easy differentiation and are not used to limit the scope of protection of this application.

[0321] Those skilled in the art will understand that all or some of the steps, apparatuses, or functional modules / units in the methods disclosed above can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0322] In hardware implementations, the division between functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. The corresponding software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0323] The above description, with reference to the accompanying drawings, illustrates preferred embodiments of the present invention, but does not limit the scope of the invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and spirit of the present invention should be considered within the scope of the present invention.

Claims

1. A signal transmission method characterized by, The method comprises: The first node transmits N first signals; The first signal contains time domain resource range indication information and first signal index indication information; or the first signal contains time domain resource range indication information and first signal second quantity indication information; The N is a positive integer, the time domain resource range indication information indicates a time domain resource index range, the time domain resource index range is used by the second node to determine a time domain resource index in the time domain resource index range and store; the first signal index indication information is used to indicate the index of the first signal in the N first signals; the first signal second quantity indication information is used to indicate the quantity of first signals transmitted after the first signal in the N first signals; The first node transmits a second signal, which triggers the second node to reduce the stored time domain resource index.

2. The method of claim 1, wherein, The N first signals are transmitted periodically.

3. The method of claim 1, wherein, The interval between the starting times of two adjacent first signals in the N first signals is less than or equal to t1-t2, wherein t1 is the duration of the first state of the second node, and t2 is the transmission duration of one of the N first signals, wherein the second node receives signals and / or transmits signals in the first state.

4. The method of claim 1, wherein, The method further comprises: The first node transmits time delay indication information; The time delay indication information comprises at least one of the following: The time delay indication information indicates the transmission time delay of the next signal transmitted by the first node to the second node; The time delay indication information indicates the switching time delay of the second node to switch to the first state next time, wherein the second node receives signals and / or transmits signals in the first state; The time delay indication information indicates the duration of the third state of the second node, wherein the second node does not receive signals, does not transmit signals, runs the clock and maintains the memory in the third state.

5. The method of claim 1, wherein, The method further comprises: The first node transmits first state ratio indication information, which indicates the ratio between the duration of the first state and the duration of the third state; or the first state ratio indication information indicates the ratio between the duration of the first state and the second duration; The second node receives signals and / or transmits signals in the first state, does not receive signals, does not transmit signals, runs the clock and maintains the memory in the third state, and the second duration is the on period of the first state.

6. A signal receiving method characterized by comprising: The method comprises: The second node receives at least one first signal in the N first signals transmitted by the first node, the first signal contains time domain resource range indication information and first signal index indication information, or the first signal contains time domain resource range indication information and first signal second quantity indication information; The N is an integer, the time domain resource range indication information indicates a time domain resource index range, the time domain resource index range is used for the second node to determine a time domain resource index in the time domain resource index range and store; the first signal index indication information is used for indicating an index of the first signal in the N first signals; the first signal second quantity indication information is used for indicating a quantity of first signals after the first signal in the N first signals; The second node determines an ending time of a last first signal in the N first signals; After the ending time of the last first signal, the second node receives a second signal, wherein the second signal is used for triggering the second node to reduce the stored time domain resource index.

7. The method of claim 6, wherein, The second node determines the ending time of the last first signal in the N first signals, including at least one of the following: According to the index of the received one first signal in the N first signals and the value of N, the ending time of the last first signal in the N first signals is determined; According to the index of the received one first signal in the N first signals and a first time length, the ending time of the last first signal in the N first signals is determined, wherein the first time length is equal to an interval between a starting time of a first first signal in the N first signals and an ending time of an Nth first signal in the N first signals; According to the quantity of first signals after the received one first signal in the N first signals, the ending time of the last first signal in the N first signals is determined.

8. The method of claim 6, wherein, The ending time of the last first signal in the N first signals includes one of the following: t n,end + (N-1 -n) *T; t n,start +P-n*T; t end +K*T; wherein n is an index of the first signal received by the second node, 0≤n≤N-1, t n,start is a start time of the first signal corresponding to index n, t n,end is an end time of the first signal corresponding to index n, P is a first duration, T is a transmission period of the N first signals, K is a number of first signals in the N first signals that are transmitted after a received one of the N first signals, t end is an end time of the received one of the N first signals, and the first duration is equal to an interval between the start time of the first first signal and the end time of the Nth first signal.

9. The method of claim 6, wherein, The second node includes at least one of the following working states: The first state, the second state and the third state; Wherein, in the first state, the second node receives signals and / or transmits signals, in the second state, the second node does not receive signals, does not transmit signals and does not run clock, in the third state, the second node does not receive signals, does not transmit signals, runs clock and maintains memory.

10. The method of claim 9, wherein, The method further comprises: The second node receives the first signal based on a first switching mode; The second node receives one first signal, and the first switching mode is changed to a second switching mode; Wherein, the first switching mode is switching between the first state and the second state, and the second switching mode is switching between the first state and the third state.

11. The method of claim 9, wherein, The first signal includes a paging signal, and the method further comprises: The paging signal received by the second node is a last paging signal in N paging signals, and the time domain resource index determined from the time domain resource index range of the paging signal is 0, and the second node maintains the first state to transmit a third signal, wherein the third signal includes a fixed identification number or a temporary identification number of the second node.

12. The method of claim 9, wherein, The first signal includes a paging signal, and the method further comprises: The second node receives the paging signal as the last paging signal of the N paging signals, and a time domain resource index determined from the time domain resource index range of the paging signal is less than a first threshold value and greater than 0, and the second node keeps the first state to receive a second signal.

13. The method of claim 9, wherein, The method further comprises: The second node receives the first signal based on a first switching mode; The second node switches from the first switching mode to a second switching mode in a case that the first signal is not received and a second signal or a preamble sequence contained in the second signal is received; The first switching mode is switching between the first state and the second state, and the second switching mode is switching between the first state and the third state.

14. The method of claim 9, wherein, The method further comprises: The second node receives time delay indication information, and determines a starting time of a next first state according to the time delay indication information; The time delay indication information comprises at least one of the following: The time delay indication information indicates a sending time delay of a next signal sent by the first node to the second node; The time delay indication information indicates a switching time delay of the second node switching to the first state next time; The time delay indication information indicates a duration of the third state of the second node.

15. The method of claim 9, wherein, The method further comprises: The second node receives first state ratio indication information, and the first state ratio indication information indicates a ratio between a duration of the first state and a duration of the third state, or the first state ratio indication information indicates a ratio between a duration of the first state and a second duration, and the second duration is an on period of the first state; The second node determines the duration of the third state according to the ratio and the duration of the first state.

16. The method of claim 9, wherein, The method further comprises: The second node receives a signal sent by the first node to the second node in the first state, and switches to the second state or the third state.

17. The method of claim 9, wherein, The method further comprises: The second node receives time delay indication information; The second node determines to switch from the third state to the first state no later than A+L, where A is a starting time of the third state or an ending time of a signal carrying the time delay indication information, and L is a duration indicated by the time delay indication information.

18. The method of claim 9, wherein, The method further comprises: The second node receives a signal sent by the first node to the second node in the first state; The second node determines that a starting time of the third state is earlier than or equal to C+H, where C is an ending time of the signal, and H is a preset duration or a duration indicated by the first node.

19. A signal transmission method characterized by comprising: The method comprises: A first node sends N first signals, where the value of N is greater than or equal to 1; After the N first signals, the first node sends a paging signal, where the paging signal comprises time domain resource range indication information, the time domain resource range indication information indicates a time domain resource index range, and the second node determines a time domain resource index in the time domain resource index range and stores the time domain resource index.

20. The method of claim 19, wherein, The first signal comprises a synchronization signal, and the synchronization signal comprises first signal index indication information or first signal second quantity indication information. The first signal index indication information is used to indicate the index of the first signal in the N first signals, and the first signal second quantity indication information is used to indicate the quantity of first signals transmitted after the first signal in the N first signals.

21. The method of claim 19, wherein, The first signal comprises a synchronization sequence, and the synchronization sequence is different from a preamble sequence comprised in other signals.

22. The method of claim 19, wherein, The N first signals are periodically transmitted.

23. The method of claim 19, wherein, The interval between the starting time of two adjacent first signals in the N first signals is less than or equal to t1-t2, where t1 is the duration of the first state of the second node, and t2 is the transmission duration of one first signal in the N first signals, where the second node receives signals and / or transmits signals in the first state.

24. A signal receiving method characterized by comprising: The first signal comprises: The second node receives at least one first signal in the N first signals transmitted by the first node. After the end time of the last first signal in the N first signals, the second node receives a paging signal, and the paging signal comprises time domain resource range indication information, where the time domain resource range indication information indicates a time domain resource index range, and the time domain resource index range is used by the second node to determine a time domain resource index and store the time domain resource index.

25. The method of claim 24, wherein, The end time of the last first signal comprises at least one of the following: The end time of the last first signal in the N first signals is determined according to the index of the received first signal in the N first signals and the value of N. The end time of the last first signal in the N first signals is determined according to the index of the received first signal in the N first signals and a first duration, where the first duration is equal to the interval between the starting time of the first first signal in the N first signals and the end time of the Nth first signal. The end time of the last first signal in the N first signals is determined according to the quantity of first signals transmitted after the received first signal in the N first signals.

26. The method of claim 24, wherein, The end time of the last first signal comprises at least one of the following: t n,end + (N-1 -n) *T; t n,start +P-n*T; t end +K*T; wherein n is an index of the first signal received by the second node, 0≤n≤N-1, t n,start is a start time of the first signal corresponding to index n, t n,end is an end time of the first signal corresponding to index n, P is a first duration, T is a transmission period of the N first signals, K is a number of first signals in the N first signals that are transmitted after a received one of the N first signals, t end is an end time of the received one of the N first signals, and the first duration is equal to an interval between the start time of the first first signal and the end time of the Nth first signal.

27. An electronic device, comprising: The electronic device comprises: One or more processors; A memory for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the signal transmission or signal reception method according to any one of claims 1-26.

28. A computer-readable storage medium, characterized in that, The computer readable storage medium stores one or more programs, and the one or more programs are executed by one or more processors to implement the signal transmission or signal reception method according to any one of claims 1-26.

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