Indication method and device for vehicle-mounted short-range communication paging node, storage medium, and terminal

Abstract

A method and device, storage medium, and terminal for indicating a paging node for in-vehicle short-range communication, the method comprising: receiving paging node indication signaling sent by a management node, the paging node indication signaling indicating whether each terminal node is a called node; determining whether the current terminal node is a called node based on the paging node indication signaling, and if the determination result is yes, triggering a random access process to enter a connected state to receive downlink data; wherein the called node is one or more of a plurality of terminal nodes. Thus, when downlink data is to be transmitted to a terminal node in an idle state, the terminal node can be paged in a timely manner, so that the corresponding terminal node triggers the access process to enter a connected state and receives the downlink data, thereby avoiding data loss.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a method and device for indicating a vehicle-mounted short-range communication paging node, a storage medium, and a terminal. Background Art

[0002] The in-vehicle short-range communication system is a system for interconnecting and communicating in-vehicle devices, including cockpit domain controllers, in-vehicle terminals (such as in-vehicle audio equipment, in-vehicle video equipment, anti-theft systems), smartphones, and smart wearable devices. Figure 1 , Figure 1 This is a schematic diagram of the structure of a conventional on-vehicle short-range communication system. The G-node is a grant node (G-node), which sends data scheduling information for the on-vehicle wireless short-range communication system. The T-node is a terminal node (T-node), which is responsible for receiving data scheduling information and sending data based on it. The physical layer identity (PID, also known as the physical layer ID) is used for physical layer addressing.

[0003] Specifically, all T nodes support the physical layer initial access (abbreviated as Random Access (RA)) process, so that the G node obtains multiple T node information. The T node performs random access based on the physical layer ID, and the physical layer TD contains at least a physical layer identification domain for non-competitive access and a physical layer identification domain for competitive access. The G node is responsible for maintaining the mapping relationship between the T node and the physical layer ID of the communication domain. Each T node in the communication domain corresponds to a unique physical layer ID. The physical layer ID of each T node can be pre-configured or configured through the G node. The physical layer ID of each T node can also be used for scheduling, and the physical layer identifier used for scheduling is not in the physical layer identification domain for competitive access.

[0004] However, in traditional situations, when a T-node is in an idle state, if downlink data arrives, it may not be indicated to the corresponding T-node, resulting in data loss. Summary of the Invention

[0005] The technical problem solved by the present invention is how to avoid downlink data loss caused by the T node being in an idle state in the scenario of in-vehicle short-range communication.

[0006] To solve this problem, the present invention provides a method for indicating a vehicle-mounted short-range communication paging node, the method comprising: receiving a paging node indication signaling sent by a management node, the paging node indication signaling indicating whether each terminal node is a called node; determining whether the current terminal node is a called node based on the paging node indication signaling, and if the determination result is yes, triggering a random access process to enter a connected state to receive downlink data; wherein, the called node is one or more of a plurality of terminal nodes.

[0007] Optionally, the terminal nodes are divided into multiple groups, and the paging node indication signaling includes DCI and a paging message, the DCI is used to indicate the group to which the called node belongs, and the paging node indication signaling sent by the receiving management node includes: receiving the DCI, the DCI is scrambled by a preset physical layer ID; descrambling the DCI by a preset physical layer ID; determining whether the current terminal node is a called node according to the paging node indication signaling, including: determining whether there is a called node in the group to which the current terminal node belongs according to the descrambled DCI; if so, continuing to receive the paging message, and determining whether the current terminal node is a called node according to the paging message.

[0008] Optionally, the DCI is for terminal nodes of all groups, and the DCI includes a group indication field, which is used to indicate whether there is a called node in each group; determining whether the current terminal node is a called node based on the de-scrambled DCI includes: determining whether there is a called node in the group where the current terminal node is located based on the group indication field of the DCI.

[0009] Optionally, after receiving the DCI, the method further includes: determining the number of groups of all terminal nodes according to the length of the group indication field; and determining the group to which the current terminal node belongs according to the current terminal node's own identifier and the number of groups.

[0010] Optionally, the paging message indicates characteristic information of the called node, and determining whether the current terminal node is the called node based on the paging message includes: comparing the characteristic information of the current terminal node with the characteristic information of the called node, and when the characteristic information of the current terminal node is consistent with the characteristic information of the called node, the current terminal node is the called node; wherein the characteristic information is at least one of a physical layer ID, a self-identification or a non-competitive access resource, the non-competitive access resource corresponds to the terminal node one-to-one, and the correspondence between the non-competitive access resource and the terminal node is determined by a predefined rule.

[0011] Optionally, the terminal nodes are divided into multiple groups, and the paging node indication signaling includes DCI, which is encrypted by different preset physical layer IDs for terminal nodes in different groups; the paging node indication signaling sent by the receiving management node includes: receiving the DCI, and de-scrambling the DCI through the preset physical layer ID corresponding to the group where the current terminal node is located. If the de-scrambling is successful, continuing to execute the step of determining whether the current terminal node is a called node according to the paging node indication signaling.

[0012] Optionally, the DCI also indicates receiving a bitmap message, and determining whether the current terminal node is the called node based on the paging node indication signaling includes: continuing to receive the bitmap message to determine whether the current terminal node is the called node based on the bitmap message, and the bitmap message is used to indicate whether each terminal node in the group where the called node is located is called.

[0013] Optionally, the DCI includes a bitmap field, and the bitmap field is used to indicate whether each terminal node in the group where the called node belongs is called.

[0014] Optionally, the paging node indication signaling includes an orthogonal sequence, each terminal node corresponds to a different orthogonal sequence, and the receiving paging node indication signaling sent by the management node includes: receiving the target orthogonal sequence sent by the management node on a preset resource; determining whether the current terminal node is the called node based on the paging node indication signaling includes: if the target orthogonal sequence is the orthogonal sequence corresponding to the current node, the current node is the called node.

[0015] Optionally, the preset resource is periodic.

[0016] An embodiment of the present invention also provides a method for indicating a vehicle-mounted short-range communication paging node, the method comprising: sending a paging node indication signaling to one or more terminal nodes, so that each terminal node determines whether it is a called node based on the paging node indication signaling, and when a terminal node determines that it is a called node, triggering a random access process to enter a connected state to receive downlink data; wherein, the paging node indication signaling indicates whether each terminal node is a called node, and the called node is one or more of a plurality of terminal nodes.

[0017] Optionally, the terminal nodes are divided into multiple groups, and the paging node indication signaling includes DCI and a paging message. Before sending the paging node indication signaling to one or more terminal nodes, it also includes: generating the DCI, and the DCI is used to indicate the group where the called node is located; scrambling the DCI through a preset physical layer ID; sending the paging node indication signaling to one or more terminal nodes includes: sending the DCI so that each terminal node descrambles the DCI through a preset physical layer ID after receiving the DCI; generating and sending a paging message so that the terminal node of the group where the called node is located receives the paging message and determines whether it is the called node.

[0018] Optionally, the DCI is for terminal nodes of all groups, the DCI includes a group indication field, and the generating of the DCI includes: generating the group indication field of the DCI according to whether there is a called node in each group.

[0019] Optionally, the generating the DCI further includes: determining the length of the group indication field according to the number of groups of all terminal nodes, so that the terminal node can determine the group to which it belongs according to its own identifier and the number of groups.

[0020] Optionally, the paging message indicates characteristic information of the called node, so that the terminal node compares its own characteristic information with the characteristic information of the called node to determine whether it is the called node; wherein the characteristic information is at least one of a physical layer ID, a self-identification or a non-competitive access resource, the non-competitive access resource corresponds one-to-one to the terminal node, and the correspondence between the non-competitive access resource and the terminal node is determined by a predefined rule.

[0021] Optionally, the terminal nodes are divided into multiple groups, and the paging node indication signaling includes DCI. Before sending the paging node indication signaling to one or more terminal nodes, it also includes: generating the DCI; scrambling the DCI through different preset physical layer IDs for terminal nodes in different groups; and sending the scrambled DCI so that the terminal node descrambles the DCI according to the preset physical layer ID corresponding to the group to which it belongs.

[0022] Optionally, the DCI is also used to indicate that the terminal node receives a bitmap message. After sending the encrypted DCI, it also includes: generating the bitmap message, the bitmap message is used to indicate whether each terminal node in the group where the called node is located is called; sending the bitmap message so that the terminal node receiving the bitmap message determines whether it is the called node based on the bitmap message.

[0023] Optionally, the DCI includes a bitmap field, and the generating of the DCI further includes: generating the bitmap field of the DCI according to whether each terminal node in the group to which the called node belongs is called.

[0024] Optionally, the paging node indication signaling is an orthogonal sequence, and each terminal node corresponds to a different orthogonal sequence; before sending the paging node indication signaling to one or more terminal nodes, it also includes: determining the target orthogonal sequence corresponding to the called node; sending the paging node indication signaling to one or more terminal nodes includes: sending the target orthogonal sequence on the preset resources, so that each terminal node receives the target orthogonal sequence on the preset resources; wherein, after each terminal node receives the target orthogonal sequence, if it determines that the target orthogonal sequence is the orthogonal sequence corresponding to itself, it can determine that itself is the called node.

[0025] Optionally, the preset resource is periodic.

[0026] An embodiment of the present invention also provides an indication device for a vehicle-mounted short-range communication paging node, the device comprising: a paging node indication signaling receiving module, used to receive a paging node indication signaling sent by a management node, the paging node indication signaling indicating whether each terminal node is a called node; a called node determination module, used to determine whether the current terminal node is a called node based on the paging node indication signaling, and if the determination result is yes, triggering a random access process to enter a connected state to receive downlink data; wherein, the called node is one or more of a plurality of terminal nodes.

[0027] An embodiment of the present invention also provides an indication device for a vehicle-mounted short-range communication paging node, the device comprising: a paging node indication signaling sending module, for sending a paging node indication signaling to one or more terminal nodes, so that each terminal node determines whether it is a called node based on the paging node indication signaling, and when a terminal node determines that it is a called node, triggers a random access process to enter a connected state to receive downlink data; wherein, the paging node indication signaling indicates whether each terminal node is a called node, and the called node is one or more of a plurality of terminal nodes.

[0028] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0029] The present invention provides a method for indicating a paging node for in-vehicle short-range communication, the method comprising: receiving a paging node indication signaling sent by a management node, the paging node indication signaling indicating whether each terminal node is a called node; determining whether the current terminal node is a called node based on the paging node indication signaling, and if the determination result is yes, triggering a random access process to enter a connected state to receive downlink data; wherein the called node is one or more of a plurality of terminal nodes. Compared to the prior art, the solution of the present invention can page the terminal node in a timely manner when downlink data is to be transmitted to a terminal node in an idle state, so that the corresponding terminal node triggers the access process to enter a connected state and receives the downlink data, thereby avoiding data loss.

[0030] Furthermore, the group to which the called node belongs is indicated through the common DCI, so that the terminal node in the group to which the called node belongs continues to receive the paging message scheduled by the DCI, and determines whether it is the called node through the paging message.

[0031] Furthermore, the DCI is specific to a single group, and the preset physical layer IDs used for DCI in different groups are different. Each terminal node only knows the preset physical layer ID corresponding to its own group. If a terminal node successfully descrambles the DCI using the preset physical layer ID it knows, it indicates that the called node exists in the group to which the terminal node belongs.

[0032] Furthermore, the management node may inform each terminal node whether it is a called node through different orthogonal sequences. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural diagram of a vehicle-mounted short-range communication system in the prior art;

[0034] Figure 2 Schematic diagram of the flow of a first method for indicating a vehicle-mounted short-range communication paging node according to an embodiment of the present invention;

[0035] Figure 3 Schematic diagram of a flow chart of a second method for indicating a vehicle-mounted short-range communication paging node according to an embodiment of the present invention;

[0036] Figure 4 1 is a flow chart of a third method for indicating a vehicle-mounted short-range communication paging node according to an embodiment of the present invention;

[0037] Figure 5 Schematic diagram of a flow chart of a fourth method for indicating a vehicle-mounted short-range communication paging node according to an embodiment of the present invention;

[0038] Figure 6 This is a schematic structural diagram of a first in-vehicle short-range communication paging node indicator device according to an embodiment of the present invention;

[0039] Figure 7 This is a structural diagram of a second indicator device for a vehicle-mounted short-range communication paging node according to an embodiment of the present invention. DETAILED DESCRIPTION

[0040] As described in the background art, conventionally, when a T-node is in an idle state, if downlink data arrives, it may not be indicated to the corresponding T-node, resulting in data loss.

[0041] To solve the above problems, an embodiment of the present invention provides a method for indicating a vehicle-mounted short-range communication paging node, the method comprising: receiving a paging node indication signaling sent by a management node, the paging node indication signaling indicating whether each terminal node is a called node; determining whether the current terminal node is a called node based on the paging node indication signaling, and if the determination result is yes, triggering a random access process to enter a connected state to receive downlink data; wherein, the called node is one or more of a plurality of terminal nodes.

[0042] In this way, in the scenario of in-vehicle short-distance communication, downlink data loss caused by the T node being in an idle state can be avoided.

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0044] See Figure 2 , Figure 2 This is a flow chart of a method for indicating a paging node for in-vehicle short-range communication according to an embodiment of the present invention. The method is executed by a terminal node in an in-vehicle short-range communication system. The terminal node executing the method is referred to as the current terminal node. The method includes:

[0045] Step S201: receiving a paging node indication signaling sent by a management node, wherein the paging node indication signaling indicates whether each terminal node is a called node;

[0046] The management node, also known as the G-node, can also be called the central node. Paging node indication signaling is sent by the management node to all or some of the terminal nodes. This signaling is used to inform each terminal node (also known as the T-node) of the presence of a called node and the specific terminal node. The called node is the terminal node that needs to receive downlink data.

[0047] Step S202, determine whether the current terminal node is a called node according to the paging node indication signaling; if the determination result is yes, continue to execute step S203, trigger the random access process to enter the connected state to receive downlink data; wherein, the called node is one or more of the multiple terminal nodes.

[0048] Optionally, if the current terminal node is not the called node, step S203 is not performed.

[0049] Each terminal node that receives the paging node indication signaling determines whether it is a called node based on the signaling. If so, the terminal node performs random access and switches from an idle state to a connected state to receive downlink data.

[0050] Therefore, when downlink data is to be transmitted to a terminal node in an idle state, the terminal node can be paged in time, so that the corresponding terminal node triggers the access process to enter the connected state and receives the downlink data, thereby avoiding data loss.

[0051] In one embodiment, the terminal nodes are divided into multiple groups, and the paging node indication signaling includes DCI and a paging message, where the DCI is used to indicate the group to which the called node belongs.

[0052] The DCI is also used to schedule a paging message so that the terminal node can receive the paging message according to the DCI. Optionally, the paging message can be carried by a physical downlink control channel (PDCCH).

[0053] See Figure 3 , Figure 3 This is a flow chart of a second method for indicating a vehicle-mounted short-range communication paging node. Figure 2 The step S201 of receiving the paging node indication signaling sent by the management node includes:

[0054] Step S2011, receiving the DCI, where the DCI is scrambled using a preset physical layer ID;

[0055] Step S2012: descramble the DCI using a preset physical layer ID.

[0056] The preset physical layer ID (physical layer ID, namely physical layer identification, Physical Layer Identity, PID for short) is for all groups of terminal nodes, and each terminal node can use the preset physical layer ID to descramble DCI.

[0057] In step S202, determining whether the current terminal node is a called node according to the paging node indication signaling includes:

[0058] Step S2021: Determine whether there is a called node in the group where the current terminal node is located based on the descrambled DCI;

[0059] If yes, proceed to step S2022 to receive the paging message and determine whether the current terminal node is a called node according to the paging message.

[0060] The paging message is used to indicate which node in the group to which the called node belongs is called.

[0061] Optionally, the paging message indicates characteristic information of the called node, and determining whether the current terminal node is the called node based on the paging message in step S2022 includes: comparing the characteristic information of the current terminal node with the characteristic information of the called node, and when the characteristic information of the current terminal node is consistent with the characteristic information of the called node, the current terminal node is the called node; wherein the characteristic information is at least one of a physical layer ID, a self-identification or a non-competitive access resource, and the non-competitive access resource corresponds one-to-one to the terminal node, and the correspondence between the non-competitive access resource and the terminal node is determined by predefined rules or other means, and the present invention does not impose any restriction requirements.

[0062] The self-identity of each terminal node is unique and can be allocated by the application layer or the management node, and the present invention does not impose any restriction requirements.

[0063] The paging message may directly indicate the information of the called node, that is, the physical layer ID and the self-identity, etc. It may also be implicitly indicated through non-contention access resources.

[0064] Optionally, the group to which the current terminal belongs may be configured by the management node or determined by other means. The management node and each terminal node have the same understanding of each group and the terminal nodes included in each group.

[0065] Optionally, if the current terminal node determines according to step S2021 that there is no called node in its group, subsequent steps are not executed.

[0066] When it is determined that the current terminal node is the called node, step S203 is continued to be executed to trigger the random access process to enter the connected state to receive downlink data.

[0067] In this embodiment, the group to which the called node belongs is indicated by the public DCI, so that the terminal node in the group to which the called node belongs continues to receive the paging message scheduled by the DCI and determines whether it is the called node through the paging message.

[0068] In one embodiment, the DCI is for terminal nodes of all groups, and the DCI includes a group indication field, where the group indication field is used to indicate whether there is a called node in each group; Figure 3 Determining whether the current terminal node is a called node according to the descrambled DCI in step S2021 includes: determining whether there is a called node in the group where the current terminal node is located according to the group indication field of the DCI.

[0069] Optionally, the group indication field uses a bitmap to indicate which terminal nodes have terminal nodes being called. Furthermore, the bitmap may include multiple bits, with each bit corresponding to a group. If a terminal node being called exists in a group, the corresponding bit is "1"; if a terminal node not being called exists in a group, the corresponding bit is "0." Alternatively, "1" may indicate that there is no called node in a group, and "0" may indicate that there is a called node in a group.

[0070] Optionally, after descrambling the DCI, the current terminal determines whether there is a called node in its group according to the bitmap information in the DCI. If yes, the terminal continues to receive the paging message.

[0071] Optionally, the bitmap length may be determined by the number of groups of terminal nodes predefined by the protocol or indicated by the management node.

[0072] In one embodiment, see Figure 3 After receiving the DCI in step S2011, the method may further include: determining the number of groups of all terminal nodes according to the length of the group indication field; and determining the group to which the current terminal node belongs according to the self-identification of the current terminal node and the number of groups.

[0073] When the bitmap length is determined by the number of terminal node groups indicated by the management node, after descrambling the DCI, the current terminal node can determine the number of groups of all terminal nodes (referred to as the number of groups) based on the bitmap length. Thus, the current terminal node uniquely identifies its group based on its own identifier and the number of groups. In other words, the management node divides each terminal node into its own groups based on its own identifier.

[0074] For example, the number of terminal nodes included in each group is N=8, and the group index of a terminal node is index=mod(the terminal node's own identifier, N), where mod() is the modulo of the value in the brackets.

[0075] In this embodiment, the terminal node's self-identification may be a physical layer ID or other preset identification. The management node and each terminal node have the same understanding of the terminal node's self-identification.

[0076] In one embodiment, see Figure 2, the terminal nodes are divided into multiple groups, the paging node indication signaling includes DCI, and the DCI is scrambled by different preset physical layer IDs to target terminal nodes in different groups; step S201 receives the paging node indication signaling sent by the management node, including: receiving the DCI, and descrambling the DCI through the preset physical layer ID corresponding to the group where the current terminal node is located. If the descrambling is successful, continue to step S202 to determine whether the current terminal node is a called node according to the paging node indication signaling.

[0077] In this embodiment, the DCI is for a single group, and the preset physical layer IDs for DCI in different groups are different. Each terminal node only knows the preset physical layer ID corresponding to its own group. If a terminal node successfully descrambles the DCI using the preset physical layer ID it knows, it indicates that the called node exists in the group to which the terminal node belongs. The indication of DCI for a single group can specifically include the following two schemes:

[0078] Option 1: The DCI also indicates receiving a bitmap message, and determining whether the current terminal node is a called node based on the paging node indication signaling includes: continuing to receive the bitmap message to determine whether the current terminal node is a called node based on the bitmap message, and the bitmap message is used to indicate whether each terminal node in the group to which the called node belongs is called.

[0079] Optionally, the DCI indicates scheduling information of a bitmap message, so that each terminal node in the group where the called node belongs receives the bitmap message according to the scheduling of the DCI.

[0080] Optionally, the bitmap message uses a bitmap to carry whether each terminal node in the group is a called node. The bitmap includes several bits, each bit represents a terminal node in the group, and each bit uses "0" or "1" to indicate that the terminal node represented by the bit is called, otherwise, it means that the terminal node represented by the bit is not called.

[0081] Optionally, the bitmap length in the bitmap message may be determined by protocol pre-definition, management node indication, and the number of terminal nodes included in each group.

[0082] Optionally, the DCI may also carry the correspondence between each terminal node and each bit of the bitmap in the bitmap message.

[0083] Optionally, the correspondence between each terminal node and each bit of the bitmap in the bitmap message can be defined by a protocol or the management node specifies the bit position occupied by each terminal node in the bitmap message, or is determined by the terminal node's own identification (including physical layer ID or other identification).

[0084] Optionally, the bitmap message is carried by PDCCH.

[0085] Solution 2: The DCI includes a bitmap field, and the bitmap field is used to indicate whether each terminal node in the group where the called node belongs is called.

[0086] That is, the bitmap domain is directly carried in the DCI, and the bitmap domain can use bitmap to carry whether each terminal node in the group is called. The bitmap solution of the bitmap domain can refer to the bitmap solution of the bitmap message in Solution 1, which will not be repeated here.

[0087] Optionally, the bitmap message or bitmap field in Solution 1 and Solution 2 can also indicate the non-contention access resources of the called node to implicitly indicate the called node. Since the terminal nodes corresponding to the non-contention access resources are not all terminal nodes, the implicit indication solution can effectively reduce the number of bits used for indication, saving transmission resources.

[0088] In one embodiment, see Figure 4 , Figure 4 This is a flow chart of a third method for indicating a paging node for vehicle-mounted short-range communication; the paging node indication signaling includes an orthogonal sequence, and each terminal node corresponds to a different orthogonal sequence. Figure 2 The step S201 of receiving the paging node indication signaling sent by the management node includes:

[0089] Step S401: receiving a target orthogonal sequence sent by the management node on a preset resource;

[0090] The step S202 of determining whether the current terminal node is a called node according to the paging node indication signaling includes:

[0091] Step S402: If the target orthogonal sequence is the orthogonal sequence corresponding to the current node, the current node is the called node;

[0092] Continuing to execute step S203, the random access process is triggered to enter the connected state to receive downlink data.

[0093] A dedicated orthogonal sequence and related transmission resources (ie, preset resources) are allocated to each terminal node through protocol pre-configuration or a management node. If a terminal node detects its corresponding dedicated orthogonal sequence on the preset resources, it is considered to be a called node, otherwise it is not a called node.

[0094] An orthogonal sequence and a preset resource constitute an indication combination. For example, an indication combination can be represented as (X, Y), where X is the orthogonal sequence and Y is the preset resource. The terminal node corresponds to the indication combination (X, Y) in a one-to-one manner.

[0095] Optionally, each terminal node in the idle state monitors the orthogonal sequence sent by the management node on its corresponding preset resource to determine whether it is the called node.

[0096] Optionally, the preset resources are periodic. Further, the preset resources are periodically allocated in the time domain.

[0097] Optionally, the period of the preset resource may be determined by a protocol or configured by a management node, so that each idle terminal node may periodically monitor the orthogonal sequence sent by the management node.

[0098] In this embodiment, the management node may inform each terminal node whether it is a called node through different orthogonal sequences.

[0099] See Figure 5 , Figure 5 This is a flow chart of a fourth method for indicating a vehicle-mounted short-range communication paging node. The method includes:

[0100] Step S501: Sending paging node indication signaling to one or more terminal nodes, so that each terminal node determines whether it is a called node according to the paging node indication signaling, and triggering a random access process to enter a connected state to receive downlink data when a terminal node determines that it is a called node;

[0101] The paging node indication signaling indicates whether each terminal node is a called node, and the called node is one or more of the multiple terminal nodes.

[0102] In one embodiment, the terminal nodes are divided into multiple groups, and the paging node indication signaling includes DCI and paging messages. Figure 5 Before sending the paging node indication signaling to one or more terminal nodes in step S501, the method further includes: generating the DCI, the DCI being used to indicate the group to which the called node belongs; scrambling the DCI using a preset physical layer ID;

[0103] Step S501 sends paging node indication signaling to one or more terminal nodes, including: sending the DCI so that each terminal node de-scrambles the DCI through a preset physical layer ID after receiving the DCI; generating a paging message and sending it so that the terminal node of the group to which the called node belongs receives the paging message and determines whether it is the called node.

[0104] In one embodiment, the DCI is for terminal nodes of all groups, the DCI includes a group indication field, and the generating of the DCI includes: generating the group indication field of the DCI according to whether there is a called node in each group.

[0105] In one embodiment, generating the DCI further includes: determining the length of the group indication field according to the number of groups of all terminal nodes, so that the terminal node can determine the group to which it belongs according to its own identifier and the number of groups.

[0106] In one embodiment, the paging message indicates the characteristic information of the called node, so that the terminal node compares its own characteristic information with the characteristic information of the called node to determine whether it is the called node; wherein, the characteristic information is at least one of a physical layer ID, a self-identification or a non-competitive access resource, the non-competitive access resource corresponds one-to-one with the terminal node, and the correspondence between the non-competitive access resource and the terminal node is determined by a predefined rule.

[0107] In one embodiment, the terminal nodes are divided into multiple groups, and the paging node indication signaling includes DCI. Before sending the paging node indication signaling to one or more terminal nodes in step S501, it also includes: generating the DCI; scrambling the DCI by different preset physical layer IDs for terminal nodes in different groups; and sending the scrambled DCI so that the terminal node descrambles the DCI according to the preset physical layer ID corresponding to the group to which it belongs.

[0108] In one embodiment, the DCI is also used to instruct the terminal node to receive a bitmap message. After sending the encrypted DCI, it also includes: generating the bitmap message, the bitmap message is used to indicate whether each terminal node in the group where the called node is located is called; sending the bitmap message so that the terminal node receiving the bitmap message determines whether it is the called node based on the bitmap message.

[0109] In one embodiment, the DCI includes a bitmap field, and generating the DCI further includes: generating the bitmap field of the DCI according to whether each terminal node in the group to which the called node belongs is called.

[0110] In one embodiment, the paging node indication signaling is an orthogonal sequence, and each terminal node corresponds to a different orthogonal sequence; before sending the paging node indication signaling to one or more terminal nodes, it also includes: determining the target orthogonal sequence corresponding to the called node; sending the paging node indication signaling to one or more terminal nodes includes: sending the target orthogonal sequence on a preset resource, so that each terminal node receives the target orthogonal sequence on the preset resource; wherein, after each terminal node receives the target orthogonal sequence, if it determines that the target orthogonal sequence is the orthogonal sequence corresponding to itself, it can determine that itself is the called node.

[0111] Optionally, the preset resource is periodic.

[0112] about Figure 5 For more information on the working principle and working mode of the indication method of the vehicle-mounted short-range communication paging node shown, please refer to Figures 2 to 4 The description of the management terminal in the method will not be repeated here.

[0113] See Figure 6 , Figure 6 Schematic diagram of the structure of an indicator device of a vehicle-mounted short-range communication paging node, wherein the indicator device 60 of the vehicle-mounted short-range communication paging node includes:

[0114] A paging node indication signaling receiving module 601 is configured to receive a paging node indication signaling sent by a management node, wherein the paging node indication signaling indicates whether each terminal node is a called node;

[0115] The called node determination module 602 is configured to determine whether the current terminal node is a called node according to the paging node indication signaling, and if the determination result is yes, trigger a random access process to enter a connected state to receive downlink data;

[0116] The called node is one or more of a plurality of terminal nodes.

[0117] about Figure 6 For more information on the working principle and working mode of the indicator device 60 of the vehicle-mounted short-range communication paging node, please refer to Figures 2 to 4 The relevant descriptions of the method will not be repeated here.

[0118] See Figure 7 , Figure 7 Schematic diagram of the structure of an indicator device for a vehicle-mounted short-range communication paging node. The indicator device 70 of the vehicle-mounted short-range communication paging node includes:

[0119] A paging node indication signaling sending module 701 is configured to send paging node indication signaling to one or more terminal nodes, so that each terminal node determines whether it is a called node according to the paging node indication signaling, and triggers a random access process to enter a connected state to receive downlink data when a terminal node determines that it is a called node;

[0120] The paging node indication signaling indicates whether each terminal node is a called node, and the called node is one or more of the multiple terminal nodes.

[0121] about Figure 7 For more information on the working principle and working mode of the indicator device 70 of the vehicle-mounted short-range communication paging node, please refer to Figure 5 The relevant descriptions of the method will not be repeated here.

[0122] The embodiment of the present invention further provides a storage medium on which a computer program is stored, and the computer program is executed by a processor. Figures 2 to 4 The method or Figure 5 The storage medium may be a computer-readable storage medium, for example, a non-volatile memory or a non-transitory memory, or an optical disk, a mechanical hard disk, a solid-state drive, etc.

[0123] Specifically, in the embodiment of the present invention, the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0124] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0125] The embodiment of the present invention further provides a terminal, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor executes the above-mentioned Figures 2 to 4 The method shown or Figure 5 The computer device includes but is not limited to a mobile phone, a computer, a tablet computer, a server or a server cluster. The terminal is also a management node and / or a terminal node.

[0126] Specifically, the terminal in the embodiments of the present application may refer to various forms of user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, terminal equipment, wireless communication equipment, user agent, or user device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc., and the embodiments of the present application are not limited thereto.

[0127] It should be understood that the term "and / or" as used herein simply describes an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " as used herein indicates that the related objects are in an "or" relationship.

[0128] The term "plurality" used in the embodiments of the present application refers to two or more.

[0129] The first, second, etc. descriptions appearing in the embodiments of this application are only for illustration and distinction of the description objects. There is no order, nor does it indicate any special limitation on the number of devices in the embodiments of this application, and cannot constitute any limitation on the embodiments of this application.

[0130] The "connection" appearing in the embodiments of the present application refers to various connection methods such as direct connection or indirect connection to achieve communication between devices, and the embodiments of the present application do not impose any limitations on this.

[0131] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A method for indicating a vehicle-mounted short-range communication paging node, characterized in that: The method comprises: receiving a paging node indication signaling sent by the management node, where the paging node indication signaling indicates whether each terminal node is a called node; Determining whether the current terminal node is a called node according to the paging node indication signaling, and if the determination result is yes, triggering a random access process to enter a connected state to receive downlink data; Wherein, the called node is one or more of a plurality of terminal nodes; The terminal nodes are divided into a plurality of groups, the paging node indication signaling includes DCI, and the DCI is scrambled by different preset physical layer IDs to target terminal nodes in different groups; The receiving paging node indication signaling sent by the management node includes: receiving the DCI, descrambling the DCI using a preset physical layer ID corresponding to the group to which the current terminal node belongs, and if the descrambling is successful, continuing to perform the step of determining whether the current terminal node is a called node according to the paging node indication signaling; The DCI includes a bitmap field, and the bitmap field is used to indicate whether each terminal node in the group where the called node is located is called; The bitmap field indicates the non-contention access resources of the called node to implicitly indicate the called node.

2. A method for indicating a vehicle-mounted short-range communication paging node, characterized in that: The method comprises: Sending paging node indication signaling to one or more terminal nodes, so that each terminal node determines whether it is a called node according to the paging node indication signaling, and triggering a random access process to enter a connected state to receive downlink data when a terminal node determines that it is a called node; The paging node indication signaling indicates whether each terminal node is a called node, and the called node is one or more of the multiple terminal nodes; The terminal nodes are divided into a plurality of groups, the paging node indication signaling includes DCI, and before the paging node indication signaling is sent to the one or more terminal nodes, the method further includes: generating the DCI; Scrambling the DCI by different preset physical layer IDs to target different groups of terminal nodes; Sending the scrambled DCI so that the terminal node descrambles the DCI according to a preset physical layer ID corresponding to the group to which the terminal node belongs; The DCI includes a bitmap field, and generating the DCI further includes: generating a bitmap field of the DCI according to whether each terminal node in the group to which the called node belongs is called; The bitmap field indicates the non-contention access resources of the called node to implicitly indicate the called node.

3. An indication device for a vehicle-mounted short-range communication paging node, characterized in that: The device comprises: A paging node indication signaling receiving module is used to receive a paging node indication signaling sent by a management node, wherein the paging node indication signaling indicates whether each terminal node is a called node; a called node determination module, configured to determine whether the current terminal node is a called node according to the paging node indication signaling, and if the determination result is yes, trigger a random access process to enter a connected state to receive downlink data; Wherein, the called node is one or more of a plurality of terminal nodes; The terminal nodes are divided into a plurality of groups, the paging node indication signaling includes DCI, and the DCI is scrambled by different preset physical layer IDs to target terminal nodes in different groups; The receiving paging node indication signaling sent by the management node includes: receiving the DCI, descrambling the DCI using a preset physical layer ID corresponding to the group to which the current terminal node belongs, and if the descrambling is successful, continuing to perform the step of determining whether the current terminal node is a called node according to the paging node indication signaling; The DCI includes a bitmap field, and the bitmap field is used to indicate whether each terminal node in the group where the called node is located is called; The bitmap field indicates the non-contention access resources of the called node to implicitly indicate the called node.

4. An indication device for a vehicle-mounted short-range communication paging node, characterized in that: The device comprises: a paging node indication signaling sending module, configured to send a paging node indication signaling to one or more terminal nodes, so that each terminal node determines whether it is a called node according to the paging node indication signaling, and triggers a random access process to enter a connected state to receive downlink data when a terminal node determines that it is a called node; The paging node indication signaling indicates whether each terminal node is a called node, and the called node is one or more of the multiple terminal nodes; The terminal nodes are divided into a plurality of groups, the paging node indication signaling includes DCI, and the apparatus further includes: means for generating the DCI before sending paging node indication signaling to one or more terminal nodes, and scrambling the DCI with different preset physical layer IDs to target different groups of terminal nodes; A module for sending the scrambled DCI so that the terminal node descrambles the DCI according to a preset physical layer ID corresponding to the group to which the terminal node belongs; The DCI includes a bitmap field, and the generating the DCI further includes: generating the bitmap field of the DCI according to whether each terminal node in the group to which the called node belongs is called; The bitmap field indicates the non-contention access resources of the called node to implicitly indicate the called node.

5. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to claim 1 or 2 are performed.

6. A terminal comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the steps of the method according to claim 1 or 2 are performed.

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