WO2021189191A1 - 一种接入控制方法、装置及通信系统 - Google Patents

一种接入控制方法、装置及通信系统 Download PDF

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Publication number
WO2021189191A1
WO2021189191A1 PCT/CN2020/080672 CN2020080672W WO2021189191A1 WO 2021189191 A1 WO2021189191 A1 WO 2021189191A1 CN 2020080672 W CN2020080672 W CN 2020080672W WO 2021189191 A1 WO2021189191 A1 WO 2021189191A1
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WIPO (PCT)
Prior art keywords
indication information
access
vehicle
information
resource
Prior art date
Application number
PCT/CN2020/080672
Other languages
English (en)
French (fr)
Inventor
刘航
张兴新
杨常青
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2022558282A priority Critical patent/JP7556977B2/ja
Priority to PCT/CN2020/080672 priority patent/WO2021189191A1/zh
Priority to CN202080098914.XA priority patent/CN115315987A/zh
Priority to KR1020227036769A priority patent/KR20220158034A/ko
Priority to CA3172979A priority patent/CA3172979A1/en
Priority to EP20927131.1A priority patent/EP4117341A4/en
Publication of WO2021189191A1 publication Critical patent/WO2021189191A1/zh
Priority to US17/950,532 priority patent/US20230014413A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/48—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for in-vehicle communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • This application relates to the field of communications, and in particular to a differentiated access control method, device, and communication equipment, which can be specifically used for short-range communications, such as cockpit domain communications.
  • Short-distance communication technology plays a very important role in people's daily life, such as Bluetooth, Wi-Fi, and so on. With the use and popularization of vehicles, the role of short-distance communication technology has become increasingly prominent. With the advancement of technology, vehicle driving assistance systems (advanced driving assistance system, ADAS) and autonomous driving systems (automated driving system, ADS) are also constantly developing. In the future, the task of driving a vehicle is likely to be completed by a machine, thereby helping people to free their hands and feet from driving a car. In addition, the vehicle is not only a means of transportation for users, but also one of the spaces for daily life. Smart cockpit technology can provide people with a large number of functions in the car environment, such as richer entertainment activities, audio, video, and office experience. This allows people to enjoy in-car office, personalized audio-visual entertainment experience, and personalized driving experience.
  • smart cockpits mainly include cockpit domain controller (CDC), on-board equipment, and off-board equipment.
  • CDC cockpit domain controller
  • the CDC and the vehicle-mounted equipment are mainly connected in a wired way, and the CDC and the non-vehicle equipment are mostly connected in a wireless way.
  • this method requires the use of a large number of cables, which requires a great investment in costs.
  • the cost of wired cables and wiring have become restrictive factors for the development of smart cockpit technology. Therefore, the wireless connection between CDC and vehicle-mounted equipment or non-vehicle-mounted equipment has become a problem that needs to be solved urgently.
  • the embodiment of the present application provides an access control method, which is applied in the field of general transmission.
  • the non-vehicle device determines whether to initiate a random access request.
  • the access of non-vehicle devices is restricted, so as to avoid the impact of non-vehicle devices initiating random access requests at this stage on the CDC's inspection of the status of vehicle devices and the access of vehicle devices, and to ensure that the vehicle Equipment and some basic services can operate normally.
  • the present application provides an access control method.
  • the method includes: determining that the state of the first device is the first state; sending first indication information, where the first indication information is used to indicate whether at least one second device is allowed to access Into the first device.
  • the first indication information is carried in a system message, or the first indication information is sent in a broadcast manner.
  • the first indication information may be a master information block (MIB), a system information block (SIB), or a broadcast frame (broadcast frame).
  • the MIB can be carried on a physical broadcast channel (physical broadcast channel, PBCH).
  • SIB is generally included in radio resource control (radio resource control, RRC) signaling.
  • RRC radio resource control
  • the first indication information is sent in a broadcast manner.
  • the first state includes at least one of a system ready state and an in-vehicle device access state, and the first indication information is used to indicate that at least one second device is not allowed to access; or the first state includes a system At least one of the operating state and the access allowed state, and the first indication information is used to indicate that the second device is allowed to access.
  • the system ready status and/or the on-board device access status can be used to indicate that the on-board device is accessing the on-board CDC at this time, or the on-board device is undergoing self-check at this time, so that non-vehicle devices can choose not to be based on this type of system status.
  • Connected to the car CDC Connected to the car CDC.
  • the system operation status and/or the allowed access status can be used to indicate that the vehicle-mounted device has been connected to the vehicle CDC at this time, and the non-vehicle device can be allowed to access the vehicle CDC at this time.
  • the first indication information is used to indicate whether to allow at least one third device to access.
  • the first indication information includes device type information
  • the device type of the at least one second device belongs to at least one device type indicated by the device type information. Further, the second device determines whether to access the first device according to the device type information.
  • the first indication information further includes access indication information, and the access indication information is used to indicate whether to allow access to the first device.
  • the first indication information includes priority information
  • the priority of at least one second device belongs to at least one priority indicated by the priority information
  • the first indication information further includes access indication information
  • the access indication information is used to indicate whether to allow access to the first device.
  • the second device determines whether to access the first device according to the priority information and the access indication information.
  • the first indication information includes first time information, and the first time information is used to indicate that at least one second device is not allowed to access the first device within the first time range.
  • the first time range is a time domain offset relative to the first reference frame, or a time domain offset relative to the first signaling.
  • the first reference frame may be the first system frame number agreed or negotiated in advance between the vehicle CDC and the non-vehicle equipment, or the first system frame number defined in the protocol; or, the first signaling may be the vehicle A certain signaling pre-arranged or negotiated between the machine CDC and the off-board equipment, or a certain signaling defined in the protocol.
  • the first signaling may be RRC signaling.
  • the time domain offset can be one or more.
  • the first indication information includes resource indication information, and the resource indication information indicates a resource used for at least one third device; or, the resource indicated by the resource indication information is not used for at least one second device.
  • the resource indicated by the resource indication information has a corresponding relationship with the device type and/or priority of the at least one third device.
  • the first indication information includes a Boolean variable or an enumerated variable. Of course, it can also be any other equivalent variable type.
  • the device type includes at least one of the following: vehicle-mounted equipment and off-vehicle equipment.
  • the present application provides an access method.
  • the method includes: receiving first indication information from a first device; and determining whether to allow a second device to access the first device according to the first indication information.
  • the first indication information is carried in a system message or sent in a broadcast manner.
  • the system message may be a system broadcast message.
  • the first indication information may be MIB, or SIB, or broadcast frame.
  • MIB can be carried on PBCH.
  • SIB is generally included in RRC signaling.
  • the first indication information is used to indicate whether to allow at least one third device to access.
  • the first indication information includes device type information
  • the device type of the at least one second device belongs to at least one device type indicated by the device type information. Further, the second device determines whether to access the first device according to the device type information.
  • the first indication information further includes access indication information, and the access indication information is used to indicate whether to allow access to the first device.
  • the first indication information includes priority information
  • the priority of at least one second device belongs to at least one priority indicated by the priority information
  • the first indication information further includes access indication information
  • the access indication information is used to indicate whether to allow access to the first device.
  • the second device determines whether to access the first device according to the priority information and the access indication information.
  • the first indication information includes first time information, and the first time information is used to indicate that at least one second device is not allowed to access the first device within the first time range.
  • the first time range is a time domain offset relative to the first reference frame, or a time domain offset relative to the first signaling.
  • the first reference frame may be the first system frame number agreed or negotiated in advance between the vehicle CDC and the non-vehicle equipment, or the first system frame number defined in the protocol; or, the first signaling may be the vehicle A certain signaling pre-arranged or negotiated between the machine CDC and the off-board equipment, or a certain signaling defined in the protocol.
  • the first signaling may be RRC signaling.
  • the time domain offset can be one or more.
  • the first indication information includes resource indication information, and the resource indication information indicates a resource used for at least one third device; or, the resource indicated by the resource indication information is not used for at least one second device.
  • the resource indicated by the resource indication information has a corresponding relationship with the device type and/or priority of the at least one third device.
  • the first indication information includes a Boolean variable or an enumerated variable. Of course, it can also be any other equivalent variable type.
  • the CDC may also be referred to as a car or car CDC
  • the first device is a car CDC
  • the third device is a car device
  • the second device is a non-car device.
  • the second device is a mobile phone.
  • this application provides an access control device, which may be the first device itself or a chip or integrated circuit inside the first device.
  • the access control device is a car CDC or a chip or integrated circuit in the car CDC.
  • the access control device can also be a mobile phone, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, or a super mobile.
  • the apparatus includes: a processing unit, configured to determine that the state of the first device is the first state; and a sending unit, configured to send first indication information, the first indication information being used to indicate whether to allow at least one second device to access the first equipment.
  • the first indication information is carried in a system message, or the first indication information is sent in a broadcast manner.
  • the first indication information may be MIB or SIB, or broadcast frame (broadcast frame).
  • MIB can be carried on PBCH.
  • SIB is generally included in RRC signaling.
  • the first indication information is sent in a broadcast manner.
  • the first indication information is sent in a broadcast manner.
  • the first state includes at least one of a system ready state and an in-vehicle device access state, and the first indication information is used to indicate that at least one second device is not allowed to access; or the first state includes a system At least one of the operating state and the access allowed state, and the first indication information is used to indicate that the second device is allowed to access.
  • the system ready status and/or the on-board device access status can be used to indicate that the on-board device is accessing the on-board CDC at this time, or the on-board device is undergoing self-check at this time, so that non-vehicle devices can choose not to be based on this type of system status.
  • Connected to the car CDC Connected to the car CDC.
  • the system operation status and/or the allowed access status can be used to indicate that the vehicle-mounted device has been connected to the vehicle CDC at this time, and the non-vehicle device can be allowed to access the vehicle CDC at this time.
  • the first indication information is used to indicate whether to allow at least one third device to access.
  • the first indication information includes device type information
  • the device type of the at least one second device belongs to at least one device type indicated by the device type information. Further, the second device determines whether to access the first device according to the device type information.
  • the first indication information further includes access indication information, and the access indication information is used to indicate whether to allow access to the first device.
  • the first indication information includes priority information
  • the priority of at least one second device belongs to at least one priority indicated by the priority information
  • the first indication information further includes access indication information
  • the access indication information is used to indicate whether to allow access to the first device.
  • the second device determines whether to access the first device according to the priority information and the access indication information.
  • the first indication information includes first time information, and the first time information is used to indicate that at least one second device is not allowed to access the first device within the first time range.
  • the first time range is a time domain offset relative to the first reference frame, or a time domain offset relative to the first signaling.
  • the first reference frame may be the first system frame number agreed or negotiated in advance between the vehicle CDC and the non-vehicle equipment, or the first system frame number defined in the protocol; or, the first signaling may be the vehicle A certain signaling pre-arranged or negotiated between the machine CDC and the off-board equipment, or a certain signaling defined in the protocol.
  • the first signaling may be RRC signaling.
  • the time domain offset can be one or more.
  • the first indication information includes resource indication information, and the resource indication information indicates a resource used for at least one third device; or, the resource indicated by the resource indication information is not used for at least one second device.
  • the resource indicated by the resource indication information has a corresponding relationship with the device type and/or priority of the at least one third device.
  • the first indication information includes a Boolean variable or an enumerated variable. Of course, it can also be any other equivalent variable type.
  • the device type includes at least one of the following: vehicle-mounted equipment and off-vehicle equipment.
  • this application provides an access device, which may be the second device itself or a chip or integrated circuit inside the second device.
  • the access device is a chip or integrated circuit in a vehicle-mounted device or a non-vehicle device.
  • the access device can also be a mobile phone, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, a UMPC, a netbook, and
  • PDAs, AR devices, VR devices, AI devices, wearable devices, in-vehicle devices, smart home devices, and/or smart city devices the embodiment of the present application does not impose special restrictions on the specific type of the first device.
  • the apparatus includes: a receiving unit and a processing unit; wherein the receiving unit is used for receiving first indication information from the first device; and the processing unit is used for determining whether to allow the second device to access the first device according to the first indication information.
  • the first indication information is carried in a system message or sent in a broadcast manner.
  • the system message may be a system broadcast message.
  • the first indication information may be MIB, or SIB, or broadcast frame. Among them, MIB can be carried on PBCH. SIB is generally included in RRC signaling.
  • the first indication information is used to indicate whether to allow at least one third device to access.
  • the first indication information includes device type information
  • the device type of the at least one second device belongs to at least one device type indicated by the device type information. Further, the second device determines whether to access the first device according to the device type information.
  • the first indication information further includes access indication information, and the access indication information is used to indicate whether to allow access to the first device.
  • the first indication information includes priority information
  • the priority of at least one second device belongs to at least one priority indicated by the priority information
  • the first indication information further includes access indication information
  • the access indication information is used to indicate whether to allow access to the first device.
  • the second device determines whether to access the first device according to the priority information and the access indication information.
  • the first indication information includes first time information, and the first time information is used to indicate that at least one second device is not allowed to access the first device within the first time range.
  • the first time range is a time domain offset relative to the first reference frame, or a time domain offset relative to the first signaling.
  • the first reference frame may be the first system frame number agreed or negotiated in advance between the vehicle CDC and the non-vehicle equipment, or the first system frame number defined in the protocol; or, the first signaling may be the vehicle A certain signaling pre-arranged or negotiated between the machine CDC and the off-board equipment, or a certain signaling defined in the protocol.
  • the first signaling may be RRC signaling.
  • the time domain offset can be one or more.
  • the first indication information includes resource indication information, and the resource indication information indicates a resource used for at least one third device; or, the resource indicated by the resource indication information is not used for at least one second device.
  • the resource indicated by the resource indication information has a corresponding relationship with the device type and/or priority of the at least one third device.
  • the first indication information includes a Boolean variable or an enumerated variable. Of course, it can also be any other equivalent variable type.
  • the first device is an on-vehicle CDC
  • the third device is an on-vehicle device
  • the second device is an off-vehicle device.
  • the second device is a mobile phone.
  • the present application provides a computer storage medium.
  • the computer storage medium includes computer instructions. When the computer instructions are executed by at least one processor, the methods of the first aspect and the second aspect are implemented.
  • the present application provides a computer program product.
  • the program code contained in the computer program product is executed by a processor in an electronic device, the methods of the first aspect and the second aspect are implemented.
  • the present application provides a communication system, and the system includes the access control device as in any one of the third aspect.
  • the access device of any one of the fourth aspect is further included.
  • the access control method, device, and communication system provided by this application indicate the current system status by sending information elements carrying system status information, time threshold and/or access indication information, so that non-vehicle devices receive After the above new information, it is determined whether to initiate a random access request. This avoids the impact of non-vehicle devices initiating random access requests at this stage on the CDC's inspection of the status of vehicle devices and the access of vehicle devices, and ensures the normal operation of vehicle devices and some basic services.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the application
  • FIG. 2 is a diagram of information interaction between CDC, on-vehicle equipment, and non-vehicle equipment according to an embodiment of this application;
  • Figure 3 is another CDC, on-vehicle equipment and non-vehicle equipment information interaction diagram provided by an embodiment of the application;
  • FIG. 4 is another information interaction diagram of CDC, on-vehicle equipment, and off-vehicle equipment according to an embodiment of the application;
  • FIG. 5 is a flowchart of an access control method provided by an embodiment of the application.
  • FIG. 6 is a flowchart of another access control method provided by an embodiment of this application.
  • FIG. 7 is a schematic diagram of an access control device provided by an embodiment of this application.
  • FIG. 8 is a schematic diagram of an access device provided by an embodiment of the application.
  • FIG. 9 is a schematic diagram of a communication system provided by an embodiment of this application.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the application.
  • the scene is mainly located in the smart cockpit environment inside the vehicle, and the smart cockpit environment may include CDC, on-board equipment, and off-board equipment.
  • Vehicle-mounted devices and non-vehicle devices are two types of nodes with different attributes. Among them, vehicle-mounted devices can include, but are not limited to, any electronic devices on the vehicle, such as vehicle microphones, vehicle speakers, and vehicle screens.
  • on-board equipment is integrated by a vehicle/car manufacturer. Since the vehicle-mounted device and the CDC are generally integrated by a vehicle manufacturer, there is a relatively fixed connection relationship between the vehicle-mounted device and the CDC, and the relatively fixed connection relationship may be, for example, a relatively fixed communication topology relationship. Of course, the fixed connection relationship between the in-vehicle equipment and the CDC can be a wired connection or a wireless connection.
  • Non-vehicle devices can include, but are not limited to, mobile phones, headsets, wearable devices, tablet computers, laptop computers, digital cameras, personal digital assistants (personal digital assistants, PDAs), laptop computers (laptops), etc., which are not on the vehicle.
  • Portable electronic equipment. CDC is connected to vehicle-mounted equipment and non-vehicle equipment in a wired or wireless manner, so as to control or manage vehicle-mounted equipment and non-vehicle equipment, and provide a variety of functions for the smart cockpit environment.
  • a vehicle refers to a vehicle that is turned on wheels on land, including but not limited to automobiles, electric vehicles, trucks, buses, etc.
  • the CDC is connected to the infotainment products installed in the vehicle and controls the infotainment products in the vehicle. It functions to realize the control of people's on-board entertainment facilities and related equipment, and can also be used to realize the information communication between the vehicle and the outside world.
  • the CDC can also be generally referred to as a car or car CDC, and the "CDC", “car CDC”, “car car” and “control domain cockpit” described in this application all have the same meaning.
  • the vehicle CDC is responsible for the management and coordination of the entire wireless resources, and needs to schedule various types of equipment for data transmission. Since the vehicle equipment and vehicle CDC are generally integrated by a vehicle manufacturer, the vehicle equipment can be pre-configured with relevant information of the vehicle CDC, and the vehicle CDC can be pre-configured with relevant information of the vehicle equipment. For example, the on-board attributes of vehicle-mounted devices facilitate rapid authentication and access of vehicle-mounted devices; however, the emergence of non-vehicle devices is uncertain. There is almost no pre-configured related information between non-vehicle devices and vehicle CDC.
  • this application determines the status of the vehicle CDC, and then carries the status in the information element in the system broadcast message, and sends it to the off-vehicle device by broadcasting, so that the off-vehicle device determines whether to access according to the state of the vehicle CDC .
  • Fig. 2 is an information interaction diagram of a vehicle-mounted CDC, vehicle-mounted equipment, and off-vehicle equipment provided by an embodiment of the application.
  • This application relates to a communication system, which includes a master node and a slave node.
  • the master node and the slave node refer to two types of nodes that are logically functionally distinguished. Among them, the master node manages the slave nodes, has resource scheduling capabilities, and is responsible for scheduling time-frequency resources for the slave nodes; the slave nodes communicate with the master node using the time-frequency resources scheduled by the master node.
  • the master node may be an access control device, such as a car CDC or other devices with an access control function; the slave node may be an access device, such as a vehicle-mounted device or a non-vehicle device.
  • first, second, and third devices that meet the communication methods provided in this application can apply the technical solutions of this application, and the second and third devices can communicate with the first device. , Different types of equipment.
  • This application can be applied in the smart cockpit environment as shown in FIG. 1, of course, it can be applied in a smart home environment with similar device relationships, a smart office environment, or any other environment with similar device relationships.
  • devices in this environment for example, mobile phones, tablet computers, desktop computers, laptop computers, handheld computers, notebook computers, UMPCs, netbooks, as well as cellular phones, PDAs, AR devices, VR devices, AI devices,
  • the specific types of the first device, the second device, and the third device are not particularly limited in the embodiments of the present application.
  • the following embodiments of the present application mainly use car CDC, car equipment, and off-board equipment as examples to illustrate the interaction between the first device, the second device, and the third device.
  • this application does not limit the first device to be an on-vehicle CDC, the second device to be an off-vehicle device, and the third device to be an on-vehicle device.
  • the on-vehicle CDC involved in the following embodiments can be replaced with the first device, the vehicle-mounted device can be replaced with the third device, and the non-vehicle device can be replaced with the second device.
  • S201 Send a first indication message.
  • the vehicle CDC sends the first instruction message so that the vehicle-mounted device or the off-vehicle device can receive the first instruction message and perform corresponding operations.
  • the first indication message may be carried on a system information (system information) or sent in a broadcast manner.
  • the system message may be a system broadcast message.
  • system broadcast messages This application is exemplified by system broadcast messages hereinafter.
  • the first indication message can be regarded as a system broadcast message.
  • the system broadcast message can be MIB, or SIB, or broadcast frame.
  • MIB can be carried on PBCH.
  • SIB is generally carried on RRC signaling. It should be noted here that all the embodiments of the present application do not limit the first indication information to be carried only in system messages or to be sent in a broadcast manner, and the first indication information may also be sent through other types of signaling.
  • the types of media access control (MAC) frames are divided into management frames (management frames) and data frames (date frames).
  • the data frame is a carrier used to carry the business data (payload) between the master node and the slave node.
  • the management frame is mainly used by the master node to manage the slave nodes, for example, including the establishment and release of the connection between the master node and the slave node, security authentication, communication resource configuration, sleep and wake-up, etc. It is understandable that when the above management function is implemented, the message sent from the slave node to the master node also needs to be carried on the management frame.
  • the MAC frame types can be divided into broadcast frames, multicast frames, and unicast frames.
  • a unicast frame is a MAC frame sent to a single receiver
  • a multicast frame is a MAC frame sent to a group of receivers
  • a broadcast frame is a MAC frame sent to all receivers.
  • this application does not limit the sending mode of the first indication message, and may be any other equivalent forms such as broadcast, multicast, or unicast.
  • the on-vehicle CDC may also determine the system status, and then configure corresponding resources for the vehicle-mounted or off-vehicle equipment.
  • the first instruction message carries instruction information.
  • the instruction information may be a resource configured for an in-vehicle device or a non-vehicle device, and is used to restrict whether the in-vehicle device or non-vehicle device is allowed to access the vehicle CDC.
  • the form of the indication information may indicate whether the vehicle-mounted device or non-vehicle device is allowed to access the vehicle CDC.
  • the first instruction message sent to the vehicle-mounted device A carries the representation "allowing access to the vehicle CDC".
  • the information or the first instruction message sent to the off-vehicle device B carries information representing “no access to the vehicle CDC”, etc., and this information can be represented by a cell or a certain number of bits.
  • the indication information may be system status indication information. After the vehicle-mounted device or the off-vehicle device receives it, it can be determined whether to allow access to the vehicle CDC according to the system status.
  • the vehicle CDC may determine the system status of the system currently running on the vehicle CDC, and then generate the first indication message.
  • the first indication message may carry system status indication information, where the system status indication information may be a status indication field for indicating the system status of the system running on the vehicle CDC.
  • the system state indication information may be a Boolean variable, for example, different states of 1 bit may indicate different contents.
  • the system status indication information may also be an enumerated type.
  • the system status indication information may also be any other replaceable data type, which is not limited in this application.
  • the manifestation of the indication information can also be a certain resource form, such as any other equivalent resource forms such as time domain resources, frequency domain resources, code domain resources, time-frequency resources, etc.
  • This application is here. Not limited.
  • a vehicle-mounted device or a non-vehicle device is allocated corresponding resources, it means that the vehicle-mounted device or a non-vehicle device is allowed to access the vehicle CDC.
  • the allocated corresponding resource can be used as the response resource of the vehicle-mounted device or the off-vehicle device, so that the vehicle-mounted device or the off-vehicle device can send response information on the allocated resource.
  • the vehicle CDC when the vehicle CDC configures corresponding response resources for the devices that need to be accessed, it can determine the corresponding response resources for each device that needs to be accessed.
  • the response resource may be a certain time-frequency resource. By assigning a corresponding time-frequency resource to each device, it is ensured that the corresponding device can send response information to the vehicle CDC on the certain time-frequency resource.
  • the response information can indicate the device status of the access device. Therefore, the first indication message may also carry the corresponding relationship between the response resource and the access device.
  • the corresponding relationship between the response resource and the access device may be explicit, for example, the corresponding relationship between the response resource and the access device is directly carried in the system broadcast message.
  • the corresponding relationship between the response resource and the access device can be implicit.
  • the access device can be based on a pre-configured identity (for example, ID), the time-frequency resource indicated in the system broadcast message, and The preset rule obtains the response resource of the access device.
  • the access device obtains the response resource, the pre-configured identity (for example, ID), the time-frequency resource indicated in the system broadcast message, and the response resource satisfy a preset rule or mapping relationship.
  • the preset rules may be pre-arranged in the agreement, and/or the pre-configured identity identifier may be configured when the access device is shipped from the factory, or it may be the last time the access device is connected to the CDC of the vehicle.
  • the machine CDC is configured for the access device.
  • the configured response resource can also be negotiated in advance between the vehicle CDC and the access device, and the vehicle CDC does not carry information about the response message in the system broadcast message.
  • the corresponding access device can directly indicate the device status of the access device to the vehicle CDC on the corresponding time-frequency resource according to the negotiated response message.
  • the vehicle CDC can also group the terminal devices that need to be accessed.
  • the terminal device that needs to be accessed may be a vehicle-mounted device or a non-vehicle device.
  • the terminal device that needs to be accessed may be a vehicle-mounted device or a non-vehicle device.
  • the terminal device in the same group are the same vehicle-mounted device or the same non-vehicle device, or are the same preset type of device.
  • each packet has a corresponding multicast address. It is understandable that, of course, grouping can also be performed according to any standard, and this application is not limited herein.
  • the car machine CDC divides the terminal equipment with the same characteristics into a group. Taking the car equipment as an example, the rear speakers and microphones located in the smart cockpit environment can be grouped into one group, and the front speakers and microphones located in the smart cockpit environment Divide into another group and so on. For another example, the speakers in all positions in the smart cockpit environment are grouped into one group, and the microphones in all positions are grouped into one group, and so on. Then the CDC allocates corresponding response resources for each group of devices. The allocated response resources are used by all terminal devices in the group. It is understandable that for the corresponding resources allocated by each group, the terminal devices in the group may also determine their own response resources from the response resources allocated by the group according to certain rules. In the same way, non-vehicle devices can be similarly grouped.
  • the form of grouping may be in the form of an array, for example, speakers or microphones may be in the form of an array.
  • Multiple terminal devices in the array are generally close geographically, and there is a central node to manage the devices in the array.
  • a response resource can be configured for an array, so that the array can feed back the device status in the array on the configured response resource.
  • the vehicle-mounted device can perform a self-check according to a program or instruction preset in the vehicle-mounted device. It is understandable that the self-inspection of vehicle-mounted equipment is mainly used for the vehicle-mounted equipment to check whether it has any problems such as damage or errors, so as to ensure that the vehicle-mounted equipment can operate normally.
  • the pre-configuration information may be configuration information pre-stored in the vehicle-mounted device.
  • the configuration information of the vehicle-mounted device may be configured before the vehicle leaves the factory; of course, it may also be pre-configured by other means before the vehicle-mounted device is powered on.
  • the probability that the vehicle-mounted device is abnormal is very low. Therefore, when vehicle CDC configures corresponding response resources for vehicle-mounted or non-vehicle devices, only vehicle-mounted devices whose device status is abnormal can be configured to use the response resource, so that only abnormal devices can send to the vehicle-mounted CDC on the response resource equipment status.
  • S202 Receive a first indication message. Further, determine the corresponding resources.
  • the vehicle-mounted device After receiving the first instruction message sent by the vehicle CDC, the vehicle-mounted device can determine whether to allow access to the vehicle CDC according to the first instruction message. If the vehicle-mounted device can obtain the response resource corresponding to the vehicle-mounted device from the first instruction message, it can be considered that the vehicle-mounted device is allowed to access the vehicle CDC. It can be understood that, if the corresponding relationship between the response resource and the access device is explicit, for each vehicle-mounted device, the response resource corresponding to the respective vehicle-mounted device can be directly obtained from the first indication message.
  • the response resource corresponding to different terminal devices may be different, that is, the vehicle CDC may individually configure response resources for different terminal devices; it may also be the same, that is, different terminal devices share the same response resource.
  • the in-vehicle device may generate a response message.
  • a response message of the vehicle-mounted device can be generated.
  • the response message includes device status information.
  • the device status information is used to indicate that the terminal device is in the device status. For example, normal or abnormal.
  • the device status information can be represented by 0 and 1.
  • 1 indicates that the device is normal, and 0 indicates that the device is abnormal.
  • 0 may indicate that the device is normal, and 1 may indicate that the device is abnormal.
  • other arbitrary numerical values, letters, words and other equivalent forms can also be used for replacement, which is not limited in this application.
  • response message may also contain the ID of the device.
  • the agreement between the two parties can agree to report only devices with abnormal status, then the response message can only contain the device ID at this time, and the CDC can know that the device status is abnormal after receiving the device ID;
  • the protocol can also stipulate that only the normal device ID of the device should be reported, which will not be repeated here.
  • the device can report the device ID and device status at the same time. If the status of device 1 is normal, the response message can indicate the device 1 ID and the status is normal; if the device 2 is abnormal, the response message can indicate the device 2 ID and the status is abnormal; among them, information such as "normal status" or "abnormal status” can be sent through the message Yuan or a few bits.
  • the CDC only requires the abnormal state of the device to report a response message. Assuming that device 1 and device 2 are divided into a group, the group address is ID1, and the shared response resource is allocated. At this time, the status of device 1 is normal and the status of device 2 is abnormal, then device 2 can send device 1 ID or device 1 belongs to the resource The group address ID1.
  • the device grouping can take the form of an array.
  • a response message is generated together to indicate the device status of the devices in the array. For example, 1 indicates that the array device is normal, and 0 indicates that the array device is abnormal. Of course, in other examples, 0 may indicate that the array device is normal, and 1 may indicate that the array device is abnormal.
  • the status of the devices in the array it can be that when all the devices in the array are normal, the device group device is normal, and when there are any number of abnormal devices in the array, the array device is considered abnormal.
  • any equivalent form can also be adopted to determine the state of the array device, which is not limited in this application.
  • the vehicle-mounted device when the vehicle-mounted device generates the response message, it may also carry the device ID of the vehicle-mounted device. If multiple vehicle-mounted devices form an array, the response message may also carry at least one of an array address and a multicast address.
  • the response resource may be shared by multiple vehicle-mounted devices.
  • a device with an abnormal state it can send the device ID on the response resource so that the vehicle CDC can determine which vehicle-mounted device when receiving the response message.
  • the device is abnormal.
  • the vehicle CDC and the vehicle equipment are manufactured by one vehicle manufacturer and are integrated in the same vehicle, the vehicle CDC can store the ID of each vehicle equipment in advance.
  • S203 Send a response message on the corresponding resource. It should be noted that this step is optional and only applies to vehicle-mounted devices that can access and send response messages. For in-vehicle devices that are not allowed to access, there is no need to send a response message.
  • the vehicle-mounted device may send the response message to the vehicle CDC on the response resource corresponding to the vehicle-mounted device.
  • S204 Receive a response message. Further, a second indication message is generated.
  • step 204 corresponds to S203. It is understandable that after receiving the response message, the vehicle CDC can re-determine the system status; if the vehicle CDC does not receive the response message, there is no need to re-determine the system status. Of course, in other examples, the vehicle CDC may also periodically, semi-periodic or non-periodically determine the system state without referring to whether the response message sent by the vehicle device is received.
  • the vehicle CDC After the vehicle CDC receives the response message sent by the vehicle device, if corresponding response resources are allocated to different vehicle devices or arrays, it can determine which vehicle devices or arrays sent the response message through different response resources. Then, according to the device status or array device status in the response message, determine whether each vehicle-mounted device or array is abnormal. Of course, if time-frequency resources are not separately allocated to different vehicle-mounted devices, the response information also carries the device ID. Therefore, it is possible to determine which in-vehicle devices or device groups are abnormal based on the device ID.
  • the vehicle CDC After the vehicle CDC has determined the device status of the vehicle equipment, it can re-determine the system status and determine the second indication message according to the new system status.
  • the second indication message is a new system broadcast message.
  • the new system broadcast message is of the same type as the system broadcast message in S201, or the type may be different. For the convenience of description, it will not be repeated here.
  • the vehicle CDC can re-determine the system status at this time and allow the non-vehicle device to access through the second indication message.
  • the car CDC may not re-determine the system status. Since system broadcast messages are generally sent periodically, the off-vehicle device still performs operations according to the instructions of the first instruction message at this time.
  • receiving the response message and re-determining the system state may be related to a certain degree, or may be independent of each other.
  • the system state may include one of a system ready state, an in-vehicle device access state, a system operation state, and an access allowed state.
  • system ready status and/or the on-board device access status can be used to indicate that the on-board device is accessing the on-board CDC at this time, or the on-board device is undergoing self-check at this time, so that non-vehicle devices can choose not to be based on this type of system status.
  • Connected to the car CDC Connected to the car CDC.
  • the system operation status and/or the allowed access status can be used to indicate that the vehicle-mounted device has been connected to the vehicle CDC at this time, and the non-vehicle device can be allowed to access the vehicle CDC at this time.
  • the process of determining the state of the vehicle equipment by the vehicle CDC can also be regarded as the process of connecting the vehicle equipment to the vehicle CDC.
  • the response message sent by the vehicle-mounted device can be regarded as an access request message of the vehicle-mounted device to a certain extent.
  • the non-vehicle device may also receive the first instruction message sent by the vehicle CDC, so the following steps may be performed after S201:
  • the first instruction message sent by the vehicle CDC when the first instruction message sent by the vehicle CDC is received, for example, the first instruction message is a system broadcast message. Then determine whether to allow the non-vehicle device to access the vehicle CDC according to the system broadcast message.
  • the system status of the current system running on the car CDC can be determined according to the system status indication information carried in the system broadcast message, and whether the off-board device is allowed to access the car CDC can be determined according to the system status.
  • the vehicle CDC directly indicates whether the non-vehicle device is allowed to access the vehicle CDC, then according to the information in the first instruction message, if access to the vehicle is not allowed If the vehicle CDC is allowed to access the vehicle CDC, then execute S208.
  • S206 Determine whether the system state is a preset system state. It should be noted that this step is optional and only applies to the case where the first indication message contains system status indication information. If there is information used to directly indicate whether to access or not in the first indication message, there is no need to determine the system status.
  • the off-vehicle device determines whether the system state determined in S205 is a preset system state set in advance.
  • the preset system state is the system ready state or the on-board device access state
  • Machine CDC execute S208.
  • the preset system status is the system operation status or the access permission status
  • Machine CDC execute S207.
  • S207 Prohibit non-vehicle devices from initiating random access requests.
  • Non-vehicle devices are prohibited from initiating random access requests to the vehicle CDC.
  • This application carries system status indication information through the system broadcast.
  • the vehicle-mounted device performs self-check or establishes a connection with the vehicle CDC, non-vehicle devices are prohibited from initiating random access requests. This avoids the impact of non-vehicle equipment initiating random access requests at this stage on the vehicle CDC's inspection of the status of the vehicle equipment and the access of the vehicle equipment. This ensures the normal operation of on-board equipment and some basic services.
  • Figure 3 is another CDC, vehicle-mounted equipment and non-vehicle-mounted equipment information interaction diagram provided by an embodiment of the application.
  • Figure 3 shows another CDC, vehicle-mounted equipment and non-vehicle equipment information interaction diagram. Compared with the system state determined in S201 in FIG. 2, in another case, it can also be replaced by a time threshold. For example, S301 can be executed.
  • S301 Send a first indication message.
  • the vehicle CDC sends the first instruction message so that the off-vehicle device determines whether to allow access to the vehicle CDC after receiving the first instruction message.
  • the first indication message may be a system broadcast message.
  • the present application does not limit the sending mode of the first indication message, and it may be broadcast, multicast or any other equivalent form. It is understandable that since this application is mainly aimed at the CDC of the vehicle to check the status of the vehicle equipment and the access of the vehicle equipment, it avoids the impact caused by the non-vehicle equipment initiating a random access request at this stage. Therefore, the in-vehicle device can ignore the time threshold information in the first indication message. Of course, in some examples, the in-vehicle device can also determine whether to access the in-vehicle CDC according to the time threshold information.
  • the first indication message may carry time threshold information.
  • the time threshold information may be time domain indication information, which is used to indicate the time threshold.
  • the time threshold information may be a system frame number (SFN) or an offset from a certain fixed reference frame.
  • the fixed reference frame may be the first reference frame.
  • the fixed reference frame may be frame 0, of course, it may also be any other reference frame.
  • the time threshold may also be a specific value or a time range, which is not limited in this application.
  • the time threshold information may be a system frame number.
  • the system frame number 256 when the non-vehicle device determines that the current system frame number is less than or equal to the system frame number 256, the non-vehicle device is not allowed to initiate access.
  • the time threshold information may be one or more time domain offsets relative to a certain fixed reference frame, for example, the time domain offset may be 256 ms, and the fixed reference frame may be The vehicle CDC and the vehicle equipment or non-vehicle equipment are negotiated or agreed in advance, or may be defined in the agreement.
  • the time threshold information may also be a time domain offset relative to the first signaling.
  • the time domain offset may be a time threshold, indicating that random access is not allowed to be initiated within a certain time range.
  • the first signaling may be a certain signaling pre-arranged or negotiated between the vehicle CDC and the off-vehicle device, or a certain signaling defined in the protocol.
  • a certain RRC signaling e.g., a certain RRC signaling.
  • the RRC signaling includes SIB.
  • SIB may be sent periodically. When the SIB is sent at a certain fixed time, in a possible implementation manner, non-vehicle devices may not be allowed to initiate access within a certain time window after the vehicle CDC sends the SIB, because the vehicle CDC There may be other things that need to be dealt with during this time.
  • the RRC signaling may also be carried in the management frame. It should be noted that [time domain offset 1, time domain offset 2] can be represented by cells or certain bits.
  • non-vehicle devices may not be allowed to initiate access within a certain time window after acquiring a certain RRC signaling (such as the first RRC signaling), because the CDC of the vehicle There may be other things that need to be dealt with during this time. For example, if the time when the non-vehicle device successfully receives the first RRC signaling is the first time, then the terminal is not allowed to go within the time window of [first time + time domain offset 1, first time + time domain offset 2] The vehicle CDC sends random access. It can be understood that RRC signaling may be carried in a control frame.
  • time threshold information may be one time domain offset or multiple time domain offsets.
  • the time threshold information carried in the first indication message may be for the off-vehicle device.
  • different time thresholds can be set for different off-vehicle devices.
  • the device group can take the form of an array. It is also possible to set different time thresholds for different off-vehicle device arrays, which are not limited in this application.
  • the manifestation of the time threshold in the system broadcast message can be either explicit or implicit. For the implementation process, refer to S201, and for the convenience of description, it will not be repeated here.
  • the car CDC can be set according to the self-check of the car equipment or the establishment of a connection with the car CDC.
  • S202 and S203 are executed after S301.
  • the implementation process of S202 and S203 in FIG. 3 is the same as that of S202 and S203 in FIG.
  • S302 can be executed after S203.
  • S302 Receive a response message. Further, a second indication message is generated.
  • step 302 corresponds to S203. It is understandable that after receiving the response message, the vehicle CDC can reset the time threshold for different off-vehicle devices. If the vehicle CDC does not receive the response message, there is no need to reset the time threshold. In other examples, the on-vehicle CDC can also set the time threshold periodically, semi-periodically or non-periodically, without referring to whether the response message sent by the on-board device is received.
  • the time threshold can be reset. It is understandable that there may be a certain correlation between receiving the response message and resetting the time threshold, or they may be independent of each other.
  • the vehicle CDC After the vehicle CDC receives the response message sent by the vehicle equipment, it determines the equipment status of the vehicle equipment. And reset the time threshold according to the equipment status of the vehicle equipment. Then, the second indication message can be determined according to the new time threshold.
  • the second indication message is a new system broadcast message.
  • the new system broadcast message is of the same type as the system broadcast message in S301, or the type may also be different. For the convenience of description, it will not be repeated here.
  • the non-vehicle device may also receive the first instruction message sent by the vehicle CDC, so the following steps may be performed after S301:
  • the first instruction message sent by the vehicle CDC when the first instruction message sent by the vehicle CDC is received, for example, the first instruction message is a system broadcast message. Then determine whether to allow the non-vehicle device to access the vehicle CDC according to the system broadcast message.
  • the time threshold assigned to the off-vehicle device by the vehicle CDC can be determined according to the time threshold information carried in the system broadcast message, and whether the off-vehicle device is allowed to access the vehicle can be determined according to the time threshold of the off-vehicle device.
  • Machine CDC when the first instruction message sent by the vehicle CDC is received, for example, the first instruction message is a system broadcast message. Then determine whether to allow the non-vehicle device to access the vehicle CDC according to the system broadcast message.
  • the vehicle CDC directly indicates whether the non-vehicle device is allowed to access the vehicle CDC, then according to the information in the first instruction message, if access to the vehicle is not allowed If the vehicle CDC is allowed to access the vehicle CDC, then execute S208.
  • S304 Determine whether the current time meets the time threshold. It should be noted that this step is optional, and is only for the case where the first indication message contains time threshold information. For the first indication message to directly indicate whether to access, there is no need to determine whether the time threshold meets the time threshold.
  • the off-board device determines whether the current moment meets the time threshold.
  • the time threshold can be a system frame number or an offset from a fixed reference frame.
  • This application carries time threshold information through the system broadcast to ensure that non-vehicle devices are prohibited from initiating random access requests before the preset time threshold is reached; or after the preset time threshold is reached, non-vehicle devices are allowed to initiate random access requests. Access request. This avoids the impact on the CDC's inspection of the status of the on-board equipment and the access of the on-board equipment due to the random access request initiated by the non-vehicle equipment at this stage. This ensures the normal operation of on-board equipment and some basic services.
  • FIG. 4 is another CDC, vehicle-mounted device, and non-vehicle device information interaction diagram provided by an embodiment of the application.
  • Figure 4 shows yet another CDC, vehicle-mounted equipment and non-vehicle-mounted equipment information interaction diagram. Compared with the system state determined in S201 in FIG. 2 and the time threshold set in S301 in FIG. 3, in another case, it can also be replaced by setting access indication information. For example, S401 can be executed.
  • S401 Send a first instruction message.
  • the vehicle CDC sends the first instruction message, so that the vehicle-mounted device or the off-vehicle device, after receiving the first instruction message, determines whether to allow access to the vehicle CDC.
  • the first indication message may be a system broadcast message.
  • this application does not limit the sending mode of the first indication message, and it may be broadcast, multicast, or any other equivalent form.
  • the system broadcast message may carry access indication information.
  • the access indication information may be a mapping table between the device type and the access relationship, or in other words, the access indication information may indicate the mapping relationship between the device type and the access relationship.
  • the mapping table or mapping relationship is used to indicate which types of devices can initiate random access requests, and which types of devices are prohibited from initiating random access requests.
  • the device type can be divided into vehicle-mounted equipment, non-vehicle equipment; or divided into microphones, speakers, mobile phones, etc.; or vehicle-mounted equipment, has been connected to the car CDC, has never been connected to the car CDC, etc.
  • the device type can also be indicated by the corresponding type index or number, which is not limited in this application.
  • mapping table of the device type and the access relationship can be displayed or implicit.
  • a corresponding table can be configured to display, for example, as shown in Table 1.
  • Table 1 all the tables involved in the proposal of this application are to reflect a correspondence relationship, and are merely a form of expression of the correspondence relationship. Any other form of expression that can reflect the correspondence relationship can replace the form, but this application uses a form Uniformly represents any possible form of expression.
  • the device type indication information can also be used to indicate the device type of the response. For example, if "000" is used to identify a car microphone, then ⁇ 000,0 ⁇ can indicate that the car microphone is allowed to be accessed.
  • a bitmap can be used to indicate which device types are allowed to access.
  • each bit of the bitmap can identify a device type. Assuming that the bitmap has a length of 3 bits, each position corresponds to the car microphone, car speaker, and mobile phone in turn. By sending bitmap ⁇ 001 ⁇ , it means that the car microphone and car speaker are allowed to access, but the mobile phone is not allowed.
  • 1 can also be used to indicate that access is allowed, 0 to indicate that access is not allowed, or any other number can be used for equivalent replacement, which is not limited in this application.
  • the mapping table of device type and access relationship can be replaced with a mapping table based on device priority and access relationship. Used to indicate whether devices with different priorities are allowed to initiate random access requests.
  • the device priority may also be an access priority.
  • a device with a higher priority may have a higher access priority. For example, the priority of car microphone and car speaker is 1, and the priority of mobile phone is 2. If the priority of the portable device in the first indication message is 1, then the car microphone and car speaker are allowed to access.
  • the device group may take the form of an array.
  • the mapping table of device type and access relationship can be set for different non-vehicle device arrays or the mapping table based on device priority and access relationship, which is not limited in this application.
  • the representation form of the access indication information in the system broadcast message may be explicit or, of course, it may also be implicit. In fact, you can refer to S201 for the actual process. For the convenience of description, I will not repeat it here.
  • S202 and S203 are executed after S401.
  • the implementation process of S202 and S203 in FIG. 4 is the same as that of S202 and S203 in FIG.
  • S402 can be executed after S203.
  • S402 Receive a response message. Further, a second indication message is generated.
  • step 402 corresponds to S203. It is understandable that if the vehicle CDC receives the response message and determines that the pre-expected vehicle device status is normal, the vehicle CDC can reset the access instruction information at this time, and allow the non-vehicle device to access through the second instruction message. Of course, if the on-board equipment pre-expected by the car CDC is abnormal, or other processing is required, the car CDC may not reset the access instruction information. Since system broadcast messages are generally sent periodically, the off-vehicle device still performs operations according to the instructions of the first instruction message at this time.
  • the vehicle CDC After the vehicle CDC receives the response message sent by the vehicle equipment, it determines the equipment status of the vehicle equipment. And reset the access instruction information according to the equipment status of the vehicle equipment. Then, the second indication message can be determined according to the new access indication information.
  • the second indication message is a new system message.
  • the new system message is of the same type as the system broadcast in S301, or the type can be different. For the convenience of description, it will not be repeated here.
  • the non-vehicle device may also receive the first instruction message sent by the vehicle CDC, so the following steps may be performed after S401:
  • S403 Receive a first indication message.
  • the first instruction message sent by the vehicle CDC when the first instruction message sent by the vehicle CDC is received, for example, the first instruction message is a system broadcast message. Then determine whether to allow the non-vehicle device to access the vehicle CDC according to the system broadcast message.
  • the device type and access relationship of the non-vehicle device can be determined according to the access indication information carried in the system broadcast message, and whether to allow the non-vehicle device to access is determined according to the device type and the access relationship Car machine CDC.
  • the vehicle CDC directly indicates whether the non-vehicle device is allowed to access the vehicle CDC, then according to the information in the first instruction message, if access to the vehicle is not allowed If the vehicle CDC is allowed to access the vehicle CDC, then execute S208.
  • S404 Determine whether the access instruction information meets a preset condition. It should be noted that this step is optional and only applies to the case where the first indication message contains access indication information. For the first indication message to directly indicate whether to access, there is no need to determine whether the access indication information meets the preset condition.
  • the non-vehicle device determines whether the device type of the non-vehicle device allows the random access request to be initiated according to the device type and the access relationship determined in S403.
  • the device type of the non-vehicle device is not allowed to initiate a random access request, it is determined that the non-vehicle device is not allowed to access the vehicle CDC, and S207 is executed; if the device type of the non-vehicle device allows the random access request to be initiated Enter the request, it is determined that the off-vehicle device is allowed to access the on-vehicle CDC, and S208 is executed.
  • This application through the system broadcast, carries the access instruction information, which ensures that only devices whose device types meet the preset conditions are allowed to send random access requests. For devices whose device types do not meet the preset conditions, they are prohibited from sending random access requests. Entry request. This avoids the impact of random access requests initiated by non-vehicle devices when the CDC checks the status of the on-board equipment and access to the on-board equipment. This ensures the normal operation of in-vehicle equipment and some basic services.
  • time threshold set in Fig. 3 and the access indication information set in Fig. 4 can exist at the same time as the system status determined in Fig. 2, and of course any one or two of them can be selected.
  • any one or two of them can be selected.
  • Fig. 5 is a flowchart of an access control method provided by an embodiment of the application.
  • the present application provides an access control method, which can implement the interaction process of FIGS. 2 to 4 described above.
  • the method can include the following steps:
  • S501 Determine that the state of the first device is the first state.
  • the first indication information is used to indicate whether at least one second device is allowed to access the first device.
  • the first indication information is carried on a system message or sent in a broadcast manner.
  • the system message may be a system broadcast message.
  • the first indication information may be MIB, or SIB, or broadcast frame. Among them, MIB can be carried on PBCH. SIB is generally included in RRC signaling.
  • the first state includes at least one of a system ready state and an in-vehicle device access state, and the first indication information is used to indicate that at least one second device is not allowed to access; or the first state includes a system At least one of the operating state and the access allowed state, and the first indication information is used to indicate that the second device is allowed to access.
  • the system ready status and/or the on-board device access status can be used to indicate that the on-board device is accessing the on-board CDC at this time, or the on-board device is undergoing self-check at this time, so that non-vehicle devices can choose not to be based on this type of system status.
  • Connected to the car CDC Connected to the car CDC.
  • the system operation status and/or the allowed access status can be used to indicate that the vehicle-mounted device has been connected to the vehicle CDC at this time, and the non-vehicle device can be allowed to access the vehicle CDC at this time.
  • the first indication information is used to indicate whether to allow at least one third device to access.
  • the first indication information includes device type information
  • the device type of the at least one second device belongs to at least one device type indicated by the device type information. Further, the second device determines whether to access the first device according to the device type information.
  • the first indication information further includes access indication information, and the access indication information is used to indicate whether to allow access to the first device.
  • the first indication information includes priority information, and the priority of at least one second device belongs to at least one priority indicated by the priority information.
  • the first indication information also includes access indication information, and the access indication information is used to indicate whether to allow access to the first device. Further, the second device determines whether to access the first device according to the priority information and the access indication information.
  • the first indication information includes first time information, and the first time information is used to indicate that at least one second device is not allowed to access the first device within the first time range.
  • the first time range is a time domain offset relative to the first reference frame, or a time domain offset relative to the first signaling.
  • the first reference frame may be the first system frame number agreed or negotiated in advance between the vehicle CDC and the non-vehicle equipment, or the first system frame number defined in the protocol; or, the first signaling may be the vehicle A certain signaling pre-arranged or negotiated between the machine CDC and the off-board equipment, or a certain signaling defined in the protocol.
  • the first signaling may be RRC signaling.
  • the time domain offset can be one or more.
  • the first indication information includes resource indication information, and the resource indication information indicates a resource used for at least one third device; or, the resource indicated by the resource indication information is not used for at least one second device.
  • the resource indicated by the resource indication information has a corresponding relationship with the device type and/or priority of the at least one third device.
  • the first indication information includes a Boolean variable or an enumerated variable. Of course, it can also be any other equivalent variable type.
  • the device type includes at least one of the following: vehicle-mounted equipment and off-vehicle equipment.
  • Fig. 6 is a flowchart of another access control method provided by an embodiment of the application.
  • the present application provides another access control method, which can implement the interaction process of FIG. 2 to FIG. 4 described above.
  • the method can include the following steps:
  • the first indication information is carried in a system message or sent in a broadcast manner.
  • the system message may be a system broadcast message.
  • the first indication information may be MIB, or SIB, or broadcast frame.
  • MIB can be carried on PBCH.
  • SIB is generally included in RRC signaling.
  • S602 Determine, according to the first indication information, whether to allow the second device to access the first device.
  • the first indication information is used to indicate whether to allow at least one third device to access.
  • the first indication information includes device type information
  • the device type of the at least one second device belongs to at least one device type indicated by the device type information. Further, the second device determines whether to access the first device according to the device type information.
  • the first indication information further includes access indication information, and the access indication information is used to indicate whether to allow access to the first device.
  • the first indication information includes priority information, and the priority of at least one second device belongs to at least one priority indicated by the priority information.
  • the first indication information also includes access indication information, and the access indication information is used to indicate whether to allow access to the first device. Further, the second device determines whether to access the first device according to the priority information and the access indication information.
  • the first indication information includes first time information, and the first time information is used to indicate that at least one second device is not allowed to access the first device within the first time range.
  • the first time range is a time domain offset relative to the first reference frame, or a time domain offset relative to the first signaling.
  • the first reference frame may be the first system frame number agreed or negotiated in advance between the vehicle CDC and the non-vehicle equipment, or the first system frame number defined in the protocol; or, the first signaling may be the vehicle A certain signaling pre-arranged or negotiated between the machine CDC and the off-board equipment, or a certain signaling defined in the protocol.
  • the first signaling may be RRC signaling.
  • the time domain offset can be one or more.
  • the first indication information includes resource indication information, and the resource indication information indicates a resource used for at least one third device; or, the resource indicated by the resource indication information is not used for at least one second device.
  • the resource indicated by the resource indication information has a corresponding relationship with the device type and/or priority of the at least one third device.
  • the first indication information includes a Boolean variable or an enumerated variable. Of course, it can also be any other equivalent variable type.
  • the first device is an on-vehicle CDC
  • the third device is an on-vehicle device
  • the second device is an off-vehicle device.
  • the second device is a mobile phone.
  • FIG. 7 is a schematic diagram of an access control device provided by an embodiment of the application.
  • the present application provides an access control device 700, where the access control device 700 may be the first device itself, such as a car CDC, or alternatively, the access control device may be the first device. Chips or internal components, etc.
  • the access control device can also be a mobile phone, tablet computer, desktop computer, laptop computer, handheld computer, notebook computer, ultra-mobile personal computer (UMPC), netbook, as well as cellular phone, personal digital Assistant (personal digital assistant, PDA), augmented reality (AR) devices, virtual reality (VR) devices, artificial intelligence (AI) devices, wearable devices, in-vehicle devices, smart home devices And/or smart city equipment, the embodiment of this application does not impose special restrictions on the specific type of the first equipment.
  • the access control apparatus 700 can implement the above-mentioned interaction process of FIG. 2 to FIG. 4.
  • the access control apparatus 700 includes: a processing unit 701, configured to determine that the state of the first device is the first state; and a sending unit 702, configured to send first indication information, the first indication information is used to indicate whether to allow at least one
  • the second device is connected to the first device.
  • the first indication information is carried in a system message, or the first indication information is sent in a broadcast manner.
  • the first indication information may be MIB or SIB, or broadcast frame (broadcast frame). Among them, MIB can be carried on PBCH. SIB is generally included in RRC signaling.
  • the first indication information is sent in a broadcast manner.
  • the first indication information is sent in a broadcast manner.
  • the first state includes at least one of a system ready state and an in-vehicle device access state, and the first indication information is used to indicate that at least one second device is not allowed to access; or the first state includes a system At least one of the operating state and the access allowed state, and the first indication information is used to indicate that the second device is allowed to access.
  • the system ready state and the on-board device access state can be used to indicate that the on-board device is accessing the on-board CDC at this time, or the on-board device is undergoing self-check at this time, so that non-vehicle devices can choose not to connect according to this type of system status.
  • Car machine CDC The system operation status and the allowed access status can be used to indicate that the vehicle-mounted device has been connected to the vehicle CDC at this time, and non-vehicle devices can be allowed to access the vehicle CDC at this time.
  • the first indication information is used to indicate whether to allow at least one third device to access.
  • the first indication information includes device type information
  • the device type of the at least one second device belongs to at least one device type indicated by the device type information. Further, the second device determines whether to access the first device according to the device type information.
  • the first indication information further includes access indication information, and the access indication information is used to indicate whether to allow access to the first device.
  • the first indication information includes priority information, and the priority of at least one second device belongs to at least one priority indicated by the priority information.
  • the first indication information also includes access indication information, and the access indication information is used to indicate whether to allow access to the first device. Further, the second device determines whether to access the first device according to the priority information and the access indication information.
  • the first indication information includes first time information, and the first time information is used to indicate that at least one second device is not allowed to access the first device within the first time range.
  • the first time range is a time domain offset relative to the first reference frame, or a time domain offset relative to the first signaling.
  • the first reference frame may be the first system frame number agreed or negotiated in advance between the vehicle CDC and the non-vehicle equipment, or the first system frame number defined in the protocol; or, the first signaling may be the vehicle A certain signaling pre-arranged or negotiated between the machine CDC and the off-board equipment, or a certain signaling defined in the protocol.
  • the first signaling may be RRC signaling.
  • the time domain offset can be one or more.
  • the first indication information includes resource indication information, and the resource indication information indicates a resource used for at least one third device; or, the resource indicated by the resource indication information is not used for at least one second device.
  • the resource indicated by the resource indication information has a corresponding relationship with the device type and/or priority of the at least one third device.
  • the first indication information includes a Boolean variable or an enumerated variable. Of course, it can also be any other equivalent variable type.
  • the device type includes at least one of the following: vehicle-mounted equipment and off-vehicle equipment.
  • FIG. 8 is a schematic diagram of an access device provided by an embodiment of the application.
  • the present application provides an access device 800, where the access device 800 may be a second device or a third device itself, such as a vehicle-mounted device or a non-vehicle device, or the access device may be a second device or a non-vehicle device.
  • Chips or internal components in the second device or the third device Such as chips or internal components in in-vehicle or off-vehicle equipment.
  • access devices can also be mobile phones, tablet computers, desktop computers, laptop computers, handheld computers, notebook computers, UMPCs, netbooks, as well as cellular phones, PDAs, AR devices, VR devices, AI devices, and wearable devices.
  • In-vehicle equipment, smart home equipment, and/or smart city equipment the embodiment of the present application does not impose special restrictions on the specific type of the first device.
  • the access device 800 may be used to implement the aforementioned interaction process in FIGS. 2 to 4.
  • the access device 800 includes: a receiving unit 801 and a processing unit 802.
  • the receiving unit 801 is configured to receive the first indication information from the first device; and the processing unit 802 is configured to determine whether to allow the second device to access the first device according to the first indication information.
  • the first indication information is carried in a system message or sent in a broadcast manner.
  • the system message may be a system broadcast message.
  • the first indication information may be MIB, or SIB, or broadcast frame. Among them, MIB can be carried on PBCH. SIB is generally included in RRC signaling.
  • the first indication information is used to indicate whether to allow at least one third device to access.
  • the first indication information includes device type information
  • the device type of the at least one second device belongs to at least one device type indicated by the device type information. Further, the second device determines whether to access the first device according to the device type information.
  • the first indication information further includes access indication information, and the access indication information is used to indicate whether to allow access to the first device.
  • the first indication information includes priority information, and the priority of at least one second device belongs to at least one priority indicated by the priority information.
  • the first indication information also includes access indication information, and the access indication information is used to indicate whether to allow access to the first device. Further, the second device determines whether to access the first device according to the priority information and the access indication information.
  • the first indication information includes first time information, and the first time information is used to indicate that at least one second device is not allowed to access the first device within the first time range.
  • the first time range is a time domain offset relative to the first reference frame, or a time domain offset relative to the first signaling.
  • the first reference frame may be the first system frame number agreed or negotiated in advance between the vehicle CDC and the non-vehicle equipment, or the first system frame number defined in the protocol; or, the first signaling may be the vehicle A certain signaling pre-arranged or negotiated between the machine CDC and the off-board equipment, or a certain signaling defined in the protocol.
  • the first signaling may be RRC signaling.
  • the time domain offset can be one or more.
  • the first indication information includes resource indication information, and the resource indication information indicates a resource used for at least one third device; or, the resource indicated by the resource indication information is not used for at least one second device.
  • the resource indicated by the resource indication information has a corresponding relationship with the device type and/or priority of the at least one third device.
  • the first indication information includes a Boolean variable or an enumerated variable. Of course, it can also be any other equivalent variable type.
  • the first device is an on-vehicle CDC
  • the third device is an on-vehicle device
  • the second device is an off-vehicle device.
  • the second device is a mobile phone.
  • FIG. 9 is a schematic diagram of a communication system provided by an embodiment of this application.
  • the present application provides a communication system 900, and the communication system 900 includes an access control device 700 as shown in FIG.
  • the access control device 700 includes at least one processor and a communication interface. Further, it may also include at least one memory. Optionally, the processor, memory, and communication interface in the access control device 700 may establish a communication connection through a bus. The communication interface provides information input and/or output for at least one processor.
  • the at least one processor may include at least one of a central processing unit (CPU), a graphics processing unit (GPU), and a digital signal processing (digital signal process, DSP) chip.
  • CPU central processing unit
  • GPU graphics processing unit
  • DSP digital signal processing
  • the memory may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include non-volatile memory (English: non-volatile memory), such as read-only memory (read-only memory). -only memory, ROM), flash memory, hard disk drive (HDD) or solid state drive (SSD); the memory 2002 may also include a combination of the above types of memory.
  • volatile memory such as random-access memory (RAM)
  • non-volatile memory English: non-volatile memory
  • read-only memory read-only memory
  • ROM read-only memory
  • flash memory such as hard disk drive (HDD) or solid state drive (SSD)
  • SSD solid state drive
  • the memory 2002 may also include a combination of the above types of memory.
  • At least one processor is used for coupling with the memory, and reading and executing instructions in the memory.
  • the instructions are executed when the processor is running, so that the processor can implement the functions shown in the access control apparatus 700.
  • the access control device 700 may be a chip that can implement the functions described in FIG. 7 above, or a vehicle that can implement the functions described in FIG. 7 above.
  • the communication system 900 further includes an access device 800 as shown in FIG. 8.
  • the access device 800 includes a processor, a memory, a communication interface, and a bus.
  • the processor, memory, and communication interface in the access device 800 can establish a communication connection through the bus.
  • the processor may be a central processing unit (CPU).
  • the memory may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include non-volatile memory (English: non-volatile memory), such as read-only memory (read-only memory). -only memory, ROM), flash memory, hard disk drive (HDD) or solid state drive (SSD); the memory 2002 may also include a combination of the above types of memory.
  • volatile memory such as random-access memory (RAM)
  • non-volatile memory English: non-volatile memory
  • read-only memory read-only memory
  • ROM read-only memory
  • flash memory such as hard disk drive (HDD) or solid state drive (SSD)
  • SSD solid state drive
  • the memory 2002 may also include a combination of the above types of memory.
  • the processor is used to couple with the memory, and read and execute instructions in the memory.
  • the instructions are executed when the processor is running, so that the processor can implement the functions shown in the access device 800.
  • the access device 800 may be a chip capable of implementing the functions described in FIG. 8 above.
  • This application also provides a means of transportation or intelligent equipment, such as a drone, a car, an unmanned transportation vehicle, or a robot, etc., and the means of transportation or intelligent equipment includes the above-mentioned access control device. Further optionally, the transportation tool further includes the aforementioned access device.
  • the access control method, device, and communication system provided by the present application carry system status information, time threshold, and/or access indication information in the system broadcast message, so that non-vehicle devices receive the system broadcast message After that, it is selected whether to initiate a random access request according to the system status information, time threshold and/or access indication information. This avoids the impact on the CDC's inspection of the status of the on-board equipment and the access of the on-board equipment due to the random access request initiated by the non-vehicle equipment at this stage. This ensures the normal operation of on-board equipment and some basic services.
  • the functions described in the embodiments of the present application may be implemented by hardware, software, firmware, or any combination thereof. When implemented by software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on the computer-readable medium.
  • the computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another.
  • the storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.
  • the steps of the method or algorithm described in combination with the embodiments disclosed herein can be implemented by hardware, a software module executed by a processor, or a combination of the two.
  • the software module can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or all areas in the technical field. Any other known storage media.

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Abstract

本申请涉及一种接入控制方法，应用于短距离通信领域，例如座舱域。该方法包括：确定第一设备的状态为第一状态；发送第一指示信息，第一指示信息用于指示是否允许至少一个第二设备接入第一设备。通过在发送的系统广播消息中携带有系统状态信息，使得非车载设备在接收到系统广播消息后，根据系统状态信息选择是否发起随机接入请求。避免了由于非车载设备在这一阶段发起随机接入请求，而对CDC检查车载设备状态以及车载设备的自检以及接入产生的影响，并保障了车载设备以及一些基本业务能够正常运行。

Description

一种接入控制方法、装置及通信系统 技术领域
本申请涉及通信领域，尤其涉及一种差异化的接入控制方法、装置及通信设备，具体可以用于短距离通信，例如座舱域通信等。
背景技术
短距离通信技术在人们的日常生活中起着非常重要的作用，例如蓝牙、Wi-Fi等等。随着车辆的使用与普及，短距离通信技术的作用也日益凸显。伴随着科技的进步，车辆的驾驶辅助系统(advanced driving assistant system，ADAS)和自动驾驶系统(automated driving system，ADS)也在不断的发展。在未来，车辆的驾驶任务很有可能需要交给机器来完成，从而帮助人们解放因驾驶汽车而束缚住的双手与双脚。另外，车辆对于使用者来讲不单单是交通工具，更是可以日常生活的空间之一。智能座舱技术可以为人们在车内环境中提供大量的功能，例如更加丰富的娱乐活动、音频、视频以及办公体验等等。使得人们可以享受车内办公、个性化的影音娱乐体验，以及个性化的驾乘体验等。
目前智能座舱中主要有驾驶舱域控制器(cockpitdomain controller，CDC)、车载设备以及非车载设备。其中CDC与车载设备之间主要采用有线的方式进行连接，而CDC与非车载设备之间大多数采用的是无线的方式进行连接。但是，由于CDC与车载设备之间采用有线的方式进行连接，该方式需要使用大量的线缆，从而需要投入极大的成本。对于狭小的车内空间，随着车载设备数量不断的增加，还会造成布线的困难。有线的线缆成本以及布线成为了智能座舱技术发展的制约因素。因此，采用无线的方式进行CDC与车载设备或非车载设备之间的连接，成为了急需解决的问题。
发明内容
本申请实施例提供了一种接入控制方法，应用于通用传输领域。通过发送携带有系统状态信息或者接入指示信息的信元，以指示当前系统状态，使得非车载设备在接收到上述信息后，确定是否发起随机接入请求。在特定阶段中限制非车载设备的接入，从而避免了由于非车载设备在这一阶段发起随机接入请求，而对CDC检查车载设备状态以及车载设备的接入产生的影响，并保障了车载设备以及一些基本业务能够正常运行。
第一方面，本申请提供了一种接入控制方法，方法包括：确定第一设备的状态为第一状态；发送第一指示信息，第一指示信息用于指示是否允许至少一个第二设备接入第一设备。可选的，第一指示信息承载于系统消息中，或者，第一指示信息以广播的方式发送。其中，第一指示信息可以是主信息块(master information block，MIB)， 或是系统信息块(system information block，SIB)，或是广播帧(broadcast frame)。其中，MIB可以承载在物理广播信道(physical broadcast channel，PBCH)上。SIB一般包含在无线资源控制(radio resource control，RRC)信令上。可选的，第一指示信息以广播的方式发送。
在一种可能的实施方式中，第一状态包括系统准备状态、车载设备接入状态中的至少一个，第一指示信息用于指示不允许至少一个第二设备接入；或者第一状态包括系统运行状态、允许接入状态中的至少一个，第一指示信息用于指示允许第二设备接入。其中，系统准备状态和/或车载设备接入状态可以用于表示此时车载设备正在接入车机CDC，或是此时车载设备正在进行自检，以便非车载设备根据此类系统状态选择不接入车机CDC。系统运行状态和/或允许接入状态可以用于表示此时车载设备已经接入车机CDC，此时可以允许非车载设备接入车机CDC。
在一种可能的实施方式中，第一指示信息用于指示是否允许至少一个第三设备接入。
在一种可能的实施方式中，第一指示信息包含设备类型信息，至少一个第二设备的设备类型属于设备类型信息所指示的至少一个设备类型。进一步的，第二设备根据设备类型信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。
在一种可能的实施方式中，第一指示信息包含优先级信息，至少一个第二设备的优先级属于优先级信息指示的至少一个优先级。
在一种可能的实施方式中，第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。进一步的，第二设备根据优先级信息以及接入指示信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息包含第一时间信息，第一时间信息用于指示在第一时间范围内不允许至少一个第二设备接入第一设备。
在一种可能的实施方式中，第一时间范围为相对于第一参考帧的时域偏移量，或相对于第一信令的时域偏移量。其中，第一参考帧可以是车机CDC和非车载设备之间预先约定或者协商的第一系统帧号，或者是在协议中定义的第一系统帧号；或者，第一信令可以是车机CDC和非车载设备之间预先约定或者协商的某个信令，或者是协议中定义的某个信令。例如，第一信令可以为RRC信令。以及，时域偏移量可以是一个或多个。
在一种可能的实施方式中，第一指示信息包括资源指示信息，资源指示信息指示了用于至少一个第三设备的资源；或者，资源指示信息指示的资源不用于至少一个第二设备。
在一种可能的实施方式中，资源指示信息指示的资源与至少一个第三设备的设备类型和/或优先级存在对应关系。
在一种可能的实施方式中，第一指示信息包含布尔型变量或者枚举型变量。当然还可以是任意其它等效的变量类型。
在一种可能的实施方式中，设备类型包括以下至少一项：车载设备和非车载设备。
第二方面，本申请提供了一种接入方法，方法包括：收来自第一设备的第一指示信息；根据第一指示信息，确定是否允许第二设备接入第一设备。可选的，第一指示信息承载于系统消息中或者以广播的方式发送，例如系统消息可以是系统广播消息。其中，第一指示信息可以是MIB，或是SIB，或是广播帧。其中，MIB可以承载在PBCH上。SIB一般包含在RRC信令上。
在一种可能的实施方式中，第一指示信息用于指示是否允许至少一个第三设备接入。
在一种可能的实施方式中，第一指示信息包含设备类型信息，至少一个第二设备的设备类型属于设备类型信息所指示的至少一个设备类型。进一步的，第二设备根据设备类型信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。
在一种可能的实施方式中，第一指示信息包含优先级信息，至少一个第二设备的优先级属于优先级信息指示的至少一个优先级。
在一种可能的实施方式中，第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。进一步的，第二设备根据优先级信息以及接入指示信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息包含第一时间信息，第一时间信息用于指示在第一时间范围内不允许至少一个第二设备接入第一设备。
在一种可能的实施方式中，第一时间范围为相对于第一参考帧的时域偏移量，或相对于第一信令的时域偏移量。其中，第一参考帧可以是车机CDC和非车载设备之间预先约定或者协商的第一系统帧号，或者是在协议中定义的第一系统帧号；或者，第一信令可以是车机CDC和非车载设备之间预先约定或者协商的某个信令，或者是协议中定义的某个信令。例如，第一信令可以为RRC信令。以及，时域偏移量可以是一个或多个。
在一种可能的实施方式中，第一指示信息包括资源指示信息，资源指示信息指示了用于至少一个第三设备的资源；或者，资源指示信息指示的资源不用于至少一个第二设备。
在一种可能的实施方式中，资源指示信息指示的资源与至少一个第三设备的设备类型和/或优先级存在对应关系。
在一种可能的实施方式中，第一指示信息包含布尔型变量或者枚举型变量。当然还可以是任意其它等效的变量类型。
在一种可能的实施方式中，CDC还可以称为车机或车机CDC，第一设备为车机CDC，第三设备为车载设备，第二设备为非车载设备。
在一种可能的实施方式中，第二设备为手机。
第三方面，本申请提供了一种接入控制装置，该接入控制装置可以为第一设备本身或者第一设备内部的芯片或者集成电路。例如接入控制装置为车机CDC或者车机CDC内的芯片或者集成电路，当然接入控制装置还可以是手机、平板电脑、桌面型计算机、膝上型计算机、手持计算机、笔记本电脑、超级移动个人计算机(ultra-mobile  personal computer，UMPC)、上网本，以及蜂窝电话、个人数字助理(personal digital assistant，PDA)、增强现实(augmented reality，AR)设备、虚拟现实(virtual reality，VR)设备、人工智能(artificial intelligence,AI)设备、可穿戴式设备、车载设备、智能家居设备和/或智慧城市设备，本申请实施例对第一设备的具体类型不作特殊限制。该装置包括：处理单元，用于确定第一设备的状态为第一状态；以及发送单元，用于发送第一指示信息，第一指示信息用于指示是否允许至少一个第二设备接入第一设备。可选的，第一指示信息承载于系统消息中，或者，第一指示信息以广播的方式发送。其中，第一指示信息可以是MIB或是SIB，或是广播帧(broadcast frame)。其中，MIB可以承载在PBCH上。SIB一般包含在RRC信令上。可选的，第一指示信息以广播的方式发送。可选的，第一指示信息以广播的方式发送。
在一种可能的实施方式中，第一状态包括系统准备状态、车载设备接入状态中的至少一个，第一指示信息用于指示不允许至少一个第二设备接入；或者第一状态包括系统运行状态、允许接入状态中的至少一个，第一指示信息用于指示允许第二设备接入。其中，系统准备状态和/或车载设备接入状态可以用于表示此时车载设备正在接入车机CDC，或是此时车载设备正在进行自检，以便非车载设备根据此类系统状态选择不接入车机CDC。系统运行状态和/或允许接入状态可以用于表示此时车载设备已经接入车机CDC，此时可以允许非车载设备接入车机CDC。
在一种可能的实施方式中，第一指示信息用于指示是否允许至少一个第三设备接入。
在一种可能的实施方式中，第一指示信息包含设备类型信息，至少一个第二设备的设备类型属于设备类型信息所指示的至少一个设备类型。进一步的，第二设备根据设备类型信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。
在一种可能的实施方式中，第一指示信息包含优先级信息，至少一个第二设备的优先级属于优先级信息指示的至少一个优先级。
在一种可能的实施方式中，第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。进一步的，第二设备根据优先级信息以及接入指示信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息包含第一时间信息，第一时间信息用于指示在第一时间范围内不允许至少一个第二设备接入第一设备。
在一种可能的实施方式中，第一时间范围为相对于第一参考帧的时域偏移量，或相对于第一信令的时域偏移量。其中，第一参考帧可以是车机CDC和非车载设备之间预先约定或者协商的第一系统帧号，或者是在协议中定义的第一系统帧号；或者，第一信令可以是车机CDC和非车载设备之间预先约定或者协商的某个信令，或者是协议中定义的某个信令。例如，第一信令可以为RRC信令。以及，时域偏移量可以是一个或多个。
在一种可能的实施方式中，第一指示信息包括资源指示信息，资源指示信息指示了用于至少一个第三设备的资源；或者，资源指示信息指示的资源不用于至少一个第 二设备。
在一种可能的实施方式中，资源指示信息指示的资源与至少一个第三设备的设备类型和/或优先级存在对应关系。
在一种可能的实施方式中，第一指示信息包含布尔型变量或者枚举型变量。当然还可以是任意其它等效的变量类型。
在一种可能的实施方式中，设备类型包括以下至少一项：车载设备和非车载设备。
第四方面，本申请提供了一种接入装置，该接入装置可以为第二设备本身或者第二设备内部的芯片或者集成电路。例如接入装置为车载设备或非车载设备内的芯片或者集成电路，当然接入装置还可以是手机、平板电脑、桌面型计算机、膝上型计算机、手持计算机、笔记本电脑、UMPC、上网本，以及蜂窝电话、PDA、AR设备、VR设备、AI设备、可穿戴式设备、车载设备、智能家居设备和/或智慧城市设备，本申请实施例对第一设备的具体类型不作特殊限制。该装置包括：接收单元和处理单元；其中，接收单元用于接收来自第一设备的第一指示信息；以及处理单元用于根据第一指示信息，确定是否允许第二设备接入第一设备。可选的，第一指示信息承载于系统消息中或者以广播的方式发送，例如系统消息可以是系统广播消息。其中，第一指示信息可以是MIB，或是SIB，或是广播帧。其中，MIB可以承载在PBCH上。SIB一般包含在RRC信令上。
在一种可能的实施方式中，第一指示信息用于指示是否允许至少一个第三设备接入。
在一种可能的实施方式中，第一指示信息包含设备类型信息，至少一个第二设备的设备类型属于设备类型信息所指示的至少一个设备类型。进一步的，第二设备根据设备类型信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。
在一种可能的实施方式中，第一指示信息包含优先级信息，至少一个第二设备的优先级属于优先级信息指示的至少一个优先级。
在一种可能的实施方式中，第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。进一步的，第二设备根据优先级信息以及接入指示信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息包含第一时间信息，第一时间信息用于指示在第一时间范围内不允许至少一个第二设备接入第一设备。
在一种可能的实施方式中，第一时间范围为相对于第一参考帧的时域偏移量，或相对于第一信令的时域偏移量。其中，第一参考帧可以是车机CDC和非车载设备之间预先约定或者协商的第一系统帧号，或者是在协议中定义的第一系统帧号；或者，第一信令可以是车机CDC和非车载设备之间预先约定或者协商的某个信令，或者是协议中定义的某个信令。例如，第一信令可以为RRC信令。以及，时域偏移量可以是一个或多个。
在一种可能的实施方式中，第一指示信息包括资源指示信息，资源指示信息指示了用于至少一个第三设备的资源；或者，资源指示信息指示的资源不用于至少一个第 二设备。
在一种可能的实施方式中，资源指示信息指示的资源与至少一个第三设备的设备类型和/或优先级存在对应关系。
在一种可能的实施方式中，第一指示信息包含布尔型变量或者枚举型变量。当然还可以是任意其它等效的变量类型。
在一种可能的实施方式中，第一设备为车机CDC，第三设备为车载设备，第二设备为非车载设备。
在一种可能的实施方式中，第二设备为手机。
第五方面，本申请提供了一种计算机存储介质，计算机存储介质包括计算机指令，当计算机指令被至少一个处理器执行时，实现第一方面和第二方面的方法。
第六方面，本申请提供了一种计算机程序产品，计算机程序产品包含的程序代码被电子设备中的处理器执行时，实现第一方面和第二方面的方法。
第七方面，本申请提供了一种通信系统，系统包含如第三方面任一项的接入控制装置。
在一种可能的实施方式中，还包含第四方面任一项的接入装置。
本申请提供的一种接入控制方法、装置及通信系统，通过发送携带有系统状态信息、时间门限和/或接入指示信息的信元，以指示当前系统状态，使得非车载设备在接收到上述新信息后，确定是否发起随机接入请求。避免了由于非车载设备在这一阶段发起随机接入请求，而对CDC检查车载设备状态以及车载设备的接入产生的影响，并保障了车载设备以及一些基本业务能够正常运行。
附图说明
图1为本申请实施例提供的一种应用场景示意图；
图2为本申请实施例提供的一种CDC、车载设备和非车载设备信息交互图；
图3为本申请实施例提供的另一种CDC、车载设备和非车载设备信息交互图；
图4为本申请实施例提供的又一种CDC、车载设备和非车载设备信息交互图；
图5为本申请实施例提供的一种接入控制方法流程图；
图6为本申请实施例提供的另一种接入控制方法流程图；
图7为本申请实施例提供的一种接入控制装置示意图；
图8为本申请实施例提供的一种接入装置示意图；
图9为本申请实施例提供的一种通信系统示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。
为阐述方便，本申请主要以应用于车辆的智能座舱场景为例进行阐述，但是不限定车辆的场景，本申请的方案还可以用于其他场景下的短距离通信。图1为本申请实施例提供的一种应用场景示意图。如图1示出的，该场景主要位于车辆内部的智能座舱环境，在智能座舱环境内可以包括有CDC、车载设备和非车载设备。车载设备和非车载设备为两类属性不同的节点，其中，车载设备可以包括但不限于车载麦克风、车 载扬声器、车载屏幕等任意位于车辆上的电子设备。一般的，车载设备是由车辆制造商(vehicle/car manufacturer)集成的。由于车载设备和CDC一般都是由一个车辆制造商集成的，车载设备与CDC之间具有相对固定的连接关系，该相对固定的连接关系例如可以是相对固定的通信拓扑关系。当然车载设备与CDC具有的固定连接关系可以是有线连接也可以是无线连接。非车载设备可以包括但不限于例如手机、耳机、可穿戴设备、平板电脑、笔记本电脑数码相机、个人数字助理(personal digital assistant，PDA)、膝上型计算机(laptop)等任意不属于车辆上的便携式电子设备。CDC通过有线或者无线的方式与车载设备、非车载设备进行连接，从而对车载设备、非车载设备进行控制或管理，为智能座舱环境提供多种多样的功能。
可以理解的是，车辆是指陆地上用轮子转动的交通工具，包括但不限于汽车，电动车、卡车、客车等。CDC与安装在车辆里的信息娱乐产品相连接并控制车辆里的信息娱乐产品，在功能上实现人对车载娱乐设施和相关设备的控制，也可以用于实现车与外界的信息通讯。可以理解的是，CDC通常还可以称为车机或车机CDC，本申请中所描述的“CDC”、“车机CDC”、“车机”以及“控制域驾驶舱”均为同一含义。
在无线的连接情况下，车机CDC负责整个无线资源的管理和协调，并且需要调度各种不同类型的设备来进行数据传输。由于车载设备和车机CDC一般都是由一个车辆制造商集成的，车载设备上可以预配置有车机CDC的相关信息，以及车机CDC上可以预配置有车载设备的相关信息。例如，车载设备具有的车载属性，从而便于车载设备能够快速认证和接入；但非车载设备的出现具有不确定性，非车载设备与车机CDC之间几乎不存在预配置的相关信息，在非车载设备与车机CDC进行连接时，往往需要经过发现、关联、安全认证等流程才能最终连接成功并进行通信。因此，如何在上电时，优先保障车载设备状态，并建立与车机CDC的连接是需要解决的问题。一般的，当车机CDC上电后，会发送系统广播消息，可以使所有车载设备或非车载设备发起连接。但是此时，车机CDC应优先检查或获知车载设备的状态以及与车载设备建立连接。该过程车机CDC不期望被其它非车载设备的接入而打断。
因此，本申请通过确定车机CDC的状态，然后将该状态承载在系统广播消息中的信元，并通过广播发送给非车载设备，以便非车载设备根据车机CDC的状态确定是否进行接入。从而保证了当车载设备接入车机CDC的时候，不会因为非车载设备的接入而受到影响。从而保障了车载设备可以优先正常运行，以及实现基本的业务功能。
可以理解的是，本申请中所涉及到的“XX信息”、“XX消息”均为相同含义。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行详细描述。
图2为本申请实施例提供的一种车机CDC、车载设备和非车载设备信息交互图。
本申请涉及一种通信系统，该系统包括主节点以及从节点。
主节点和从节点是指在逻辑功能上区分的两类节点。其中，主节点管理从节点，具有资源调度能力，负责为从节点调度时频资源；从节点使用主节点调度的时频资源与主节点进行通信。主节点可以是接入控制装置，例如车机CDC或者其它具有接入控制功能的装置；从节点可以是接入装置，例如车载设备或非车载设备等。
本领域技术人员可知，满足本申请所提供的通信方式的任何类型的第一、第二和第三设备都可以应用本申请的技术方案，第二和第三设备为可以与第一设备通信的、 不同类型的设备。
本申请可以应用在如图1所示的智能座舱环境内，当然可以应用在具有类似设备关系的智能家居环境中、智能办公环境中或是其它任意具有类似类似设备关系的环境内。对于该环境内的设备，例如可以是手机、平板电脑、桌面型计算机、膝上型计算机、手持计算机、笔记本电脑、UMPC、上网本，以及蜂窝电话、PDA、AR设备、VR设备、AI设备、可穿戴式设备、车载设备、智能家居设备和/或智慧城市设备，本申请实施例对第一设备、第二设备和第三设备的具体类型不作特殊限制。
需要说明的是，本申请以下所涉及的实施例主要以车机CDC、车载设备和非车载设备为例来阐述第一设备、第二设备和第三设备之间的交互。但是本申请并不限定第一设备为车机CDC，第二设备为非车载设备以及第三设备为车载设备。可以理解的是，以下实施例所涉及的车机CDC可以替换为第一设备，车载设备可以替换为第三设备，非车载设备可以替换为第二设备。
由图2可以看出，一般的，当车辆点火之后，车机CDC以及车载设备会进行上电启动。
S201，发送第一指示消息。
车机CDC发送第一指示消息，以便车载设备或非车载设备接收第一指示消息，并进行相应操作。
可选的，第一指示消息可以承载于系统消息(systeminformation)上或者以广播的方式发送。例如系统消息可以是系统广播消息。本申请在下文中多以系统广播消息进行示例性说明。在某种程度上，可以将第一指示消息看作系统广播消息。其中，系统广播消息可以是MIB，或是SIB，或是广播帧。其中，MIB可以承载在PBCH上。SIB一般承载在RRC信令上。这里需要说明的是，本申请所有实施例不限定第一指示信息仅承载于系统消息或者以广播的方式发送，所述第一指示信息也可以通过其它类型的信令进行发送。
一般的，媒体协议控制层(media access control，MAC)帧的类型分为管理帧(management frame)和数据帧(date frame)。数据帧是用于承载主节点与从节点之间业务数据(payload)的载体。其中，主节点与从节点之间进行通信之前，需要先建立主节点与从节点之间的通信链路，以便在该通信链路中进行相应的安全认证、资源配置等操作。管理帧主要用于主节点对从节点进行管理，例如包括主节点与从节点之间连接的建立与释放、安全认证、通信资源配置、休眠与唤醒等。可以理解的，实现上述管理功能时，从节点向主节点发送的消息也需要承载在管理帧上。
若从MAC帧的接收端这一维度考量，MAC帧类型又可以分为广播帧、组播帧和单播帧。其中，单播帧为发送给单个接收端的MAC帧；组播帧为发送给一组接收端的MAC帧；广播帧为发送给所有接收端的MAC帧。当然可以理解的是，本申请并不限制第一指示消息的发送方式，可以是广播、组播或单播等其它任意等效的形式。
在一些实施例中，在车机CDC发送系统广播消息之前，车机CDC还可以确定系统状态，然后对车载设备或非车载设备配置相应的资源。其中，第一指示消息中携带有指示信息，指示信息可以是对车载设备或非车载设备配置的资源，用于约束该车载设备或非车载设备是否允许接入车机CDC的信息。
在一些例子中，该指示信息的表现形式可以是表示车载设备或非车载设备是否允许接入车机CDC，例如发给车载设备A的第一指示消息中携带代表“允许接入车机CDC”的信息或发给非车载设备B的第一指示消息中携带代表“不允许接入车机CDC”的信息等，该信息可以通过信元或是某几个比特位表示。又例如，该指示信息可以是系统状态指示信息，当车载设备或非车载设备接收到后，可以根据系统状态的情况，确定是否允许接入车机CDC。
例如，当车机CDC上电后，车机CDC可以确定当前车机CDC上运行的系统的系统状态，然后生成第一指示消息。该第一指示消息中可以携带有系统状态指示信息，其中，系统状态指示信息可以是个状态指示域，用于指示车机CDC上运行的系统的系统状态。在一个例子中，系统状态指示信息可以是布尔型的变量，例如1比特的不同状态可以指示不同的内容。在另一个例子中，系统状态指示信息还可以是枚举类型。当然本领域技术人员应当知道，系统状态指示信息还可以是其它任意可替换的数据类型，本申请在此不作限定。
当然，在另一些例子中，指示信息的表现形式还可以是某种资源形式，例如时域资源、频域资源、码域资源、时频资源等任意其它等效的资源形式，本申请在此不作限定。当车载设备或非车载设备被分配了对应的资源，则意味着允许该车载设备或非车载设备接入车机CDC。可理解的是，分配的对应的资源可以作为车载设备或非车载设备的响应资源，以便车载设备或非车载设备在分配的资源上发送响应信息。
例如，车机CDC在为需要接入的设备配置相应的响应资源时，可以为每个需要接入的设备分别确定对应的响应资源。该响应资源可以是某个确定的时频资源，通过为每个设备分配对应的时频资源，保障了相应的设备可以在确定的时频资源上向车机CDC发送响应信息。其中，响应信息可以指示接入设备的设备状态。因此，第一指示消息中还可以携带有响应资源与接入设备的对应关系。在一个例子中，响应资源与接入设备的对应关系可以是显式的，例如在系统广播消息中直接携带响应资源与接入设备的对应关系。当然在另一个例子中，响应资源与接入设备的对应关系可以是隐式的，例如，接入设备可以根据预配置的身份标识(例如，ID)、系统广播消息中指示的时频资源以及预设的规则得到该接入设备的响应资源。换句话说，接入设备得到响应资源，预配置的身份标识(例如，ID)、系统广播消息中指示的时频资源以及响应资源之间满足预设的规则或者映射关系。其中，预设的规则可以是协议中预先约定的，和/或预配置的身份标识可以是接入设备出厂时配置好的，也可以是上一次该接入设备与车机CDC连接时，车机CDC为该接入设备配置的。当然，配置的响应资源还可以是车机CDC与接入设备预先协商好的，车机CDC并不在系统广播消息中携带有关于响应消息的信息。对应的接入设备可以直接根据协商好的响应消息，在对应的时频资源上向车机CDC指示接入设备的设备状态。
在另一些实施例中，车机CDC还可以对需要接入的终端设备进行分组。可以理解的是，需要接入的终端设备可以是车载设备，也可以是非车载设备。例如可以按照设备所处的位置，或是根据设备各自的设备类型等等。通常情况下，对于同一位置的车载设备和非车载设备，不会分配至同一分组中。换句话说，同一分组内的终端设备，同为车载设备或同为非车载设备，或者为同一预设类型的设备。可选的，对于每一个 分组都具有对应的组播地址。可以理解的是，当然还可以根据任意标准进行分组，本申请在此不作限定。
车机CDC将具有相同特征的终端设备分为一组，以车载设备为例，可以将位于智能座舱环境中的后排扬声器和麦克风分为一组，位于智能座舱环境中的前排扬声器和麦克风分为另一组等。又例如，将智能座舱环境中所有位置的扬声器分为一组，以及所有位置的麦克风分为一组等。然后车机CDC针对每一组设备，分配对应的响应资源。分配的响应资源用于该组内的所有终端设备共同使用。可以理解的，对于每个分组所分配的相应资源，该组内的终端设备还可以根据一定的规则从该组分配的响应资源中，确定自己的响应资源。同理，可以对非车载设备进行类似的分组。
在另外一个例子中，分组的形式可以表现为阵列的形式，例如扬声器或者麦克风可能是阵列的形式。阵列中的多个终端设备一般在地理位置上是相近的，存在一个中心节点来管理阵列中的设备。对于阵列形式，可以为一个阵列配置一个响应资源，从而使得阵列可以在配置的响应资源上反馈阵列中的设备状态。
在一个例子中，当车载设备上电之后，可以根据预先设置在车载设备内的程序或指令进行车载设备自检。可以理解的是，车载设备的自检主要用于车载设备检查自身是否出现损坏、错误等问题，以保障车载设备可以正常运行。其中，预配置信息可以是预先存储在车载设备的配置信息。在一个例子中，车载设备的配置信息可以是在车辆出厂时就已经配置好的；当然还可以是在车载设备上电之前，通过其它方式预先配置好的。
在一些例子中，当需要接入的设备为车载设备时，由于考虑到车载设备异常的概率非常低。因此，车机CDC为车载设备或非车载设备配置相应的响应资源时，可以仅配置设备状态为异常状态的车载设备使用该响应资源，使得只有异常的设备才在响应资源上向车机CDC发送设备状态。
S202，接收第一指示消息。进一步的，确定对应的资源。
对于车载设备，当车载设备接收到车机CDC发送的第一指示消息后，可以根据第一指示消息确定是否允许接入车机CDC。若车载设备可以从第一指示消息中获取该车载设备对应的响应资源，则可以认为允许该车载设备接入车机CDC。可以理解的是，若响应资源与接入设备的对应关系是显式的，则针对每个车载设备均可以从第一指示消息中直接获取到各自车载设备对应的响应资源。当然若响应资源与接入设备的对应关系是隐式的，则针对每个车载设备，可以根据预配置的身份标识(例如，ID)、系统广播消息中指示的时频资源以及预设的规则计算得到该接入设备的响应资源。可以理解的是，不同终端设备各自对应的响应资源可以是不同的，即可以是车机CDC为不同终端设备单独配置响应资源；也可以是相同的，即不同终端设备共用同一响应资源。
在一些例子中，车载设备在接收到第一指示消息后，可以生成响应消息。
针对每个车载设备，当该车载设备获取到对应的响应资源后，可以生成该车载设备的响应消息。其中，响应消息包括设备状态信息。设备状态信息用于表示该终端设备是设备状态。例如正常或异常。当然在一些例子中，设备状态信息可以用0和1表示。例如1表示设备正常，0表示设备异常。当然在另一些例子中，可以0表示设备正常，1表示设备异常。当然还可以采用其它任意数值或字母、单词等任意等效形式 进行替换，本申请在此不作限定。
可以理解的，响应消息还可以包含设备的ID。
可以理解的，在一些例子中，双方协议可以约定只上报状态异常的设备，则此时响应消息可以只包含设备ID，则CDC在接收到该设备ID之后，就可以知道该设备状态出现异常；同样的道理，协议也可以约定只上报设备正常的设备ID，在此不再赘述。
在一些例子中，设备可以同时上报设备ID和设备状态。如果设备1状态正常，则响应消息可以指示设备1ID，状态正常；设备2状态异常，则响应消息可以指示设备2ID，状态异常；其中，例如“状态正常”或“状态异常”等信息可以通过信元或是某几个比特位表示。
在一些例子中，如果CDC只要求设备异常状态上报响应消息。假定设备1和设备2被分为一组，组地址为ID1，分配共享的响应资源，此时设备1状态正常，设备2状态异常，则设备2可以在该资源上发送设备1ID或设备1所属的组地址ID1。
若车机CDC对车载设备进行了设备分组，其中，设备分组可以采用阵列的形式，对于该阵列内的多个车载设备，共同生成一个响应消息，用于表示该阵列中设备的设备状态。例如1表示阵列设备正常，0表示阵列设备异常。当然在另一些例子中，可以0表示阵列设备正常，1表示阵列设备异常。
对于阵列中设备的状态，可以是阵列中所有设备均正常时显示设备组设备正常，当阵列中存在任意数量设备异常时，则认为阵列设备异常。当然在其它例子中，还可以根据阵列中正常设备或异常设备在阵列中的占比决定，例如当正常设备或异常设备高于预设的占比阈值，则认为阵列设备异常，否则认为阵列设备正常。当然还可以根据阵列中异常设备的数量决定，例如该阵列中异常设备超过预设的数量阈值，则认为阵列设备异常，否则认为阵列设备正常。显然，还可以采取任意等效的形式确定阵列设备的状态，本申请在此不作限定。
在一些例子中，车载设备在生成响应消息时，还可以携带有该车载设备的设备ID，若多个车载设备构成阵列，则响应消息中还可以携带阵列地址、组播地址中的至少一个。
在另一些例子中，响应资源可能由多个车载设备共享，对于某个状态异常的设备，其可以在响应资源上发送该设备的ID，以便车机CDC在接收到响应消息时，确定哪个车载设备存在异常。一般的，由于车机CDC与车载设备都是由一个车辆制造商制造，并集成在同一辆汽车上，因此车机CDC可以预先存储各车载设备的ID。
可以理解的，由于车载设备一般故障率较低，同时出现两个设备均异常的概率也较小，因此为多个车载设备配置共享的响应资源也是合理的。
S203，在对应的资源上发送响应消息。应当注意的是，该步骤为可选的，仅针对能够接入并发送响应消息的车载设备。对于不允许接入的车载设备，则无需发送响应消息。
可选的，车载设备在生成相应响应信息后，可以在该车载设备对应的响应资源上将响应消息发送至车机CDC。
S204，接收响应消息。进一步的，生成第二指示消息。
该步骤204的执行对应S203。可以理解的是，当接收到响应消息后，车机CDC 可以重新确定系统状态；若车机CDC未接收到响应消息，则可以无需重新确定系统状态。当然，在其它例子中，车机CDC也可以周期性的、半周期性的或非周期性的确定系统状态，而无需参考是否接收到车载设备发送的响应消息。
车机CDC接收到车载设备发送的响应消息后，若针对不同的车载设备或阵列分配了相应的响应资源，则可以通过不同的响应资源确定该响应消息是哪些车载设备或阵列发送的。再根据响应消息中的设备状态或阵列设备状态，确定各个车载设备或阵列是否存在异常。当然，若并未对不同的车载设备单独分配时频资源时，则响应信息中还携带有设备ID。因此，可以根据设备ID确定哪些车载设备或设备组存在异常。
车机CDC在确定完车载设备的设备状态情况后，可以重新确定系统状态，并根据新的系统状态确定第二指示消息。其中，第二指示消息为新的系统广播消息。新的系统广播消息与S201中的系统广播消息类型相同，或者，类型也可以不同，为方便描述，在此不再赘述。
可以理解的，如果车机CDC接收响应消息，确定预先期望的车载设备状态都正常，则此时车机CDC可以重新确定系统状态，并通过第二指示消息允许非车载设备接入。
当然，如果车机CDC预先期望的车载设备设备出现异常，或者需要进行其它处理，车机CDC也可以不重新确定系统状态。由于系统广播消息一般都是周期性发送的，此时非车载设备仍然根据第一指示消息指示进行操作。
可以理解的是，接收响应消息与重新确定系统状态可能存在一定的关联，也可以是相互独立的。
在一个例子中，系统状态可以包括：系统准备状态、车载设备接入状态、系统运行状态以及允许接入状态中的一种。当然在其它例子中，还可以包括其它可能的系统状态，本申请在此不作限定。其中，系统准备状态和/或车载设备接入状态可以用于表示此时车载设备正在接入车机CDC，或是此时车载设备正在进行自检，以便非车载设备根据此类系统状态选择不接入车机CDC。系统运行状态和/或允许接入状态可以用于表示此时车载设备已经接入车机CDC，此时可以允许非车载设备接入车机CDC。
本领域技术人员可以理解的是，车机CDC在确定车载设备状态的过程也可以看作是车载设备接入车机CDC的过程。对于车载设备发送的响应消息，在某种程度上则可以看作是车载设备的接入请求消息。
继续回到S201。在车机CDC发送第一指示消息之后，非车载设备也可以接收到车机CDC发送的第一指示消息，因此在S201之后还可以执行以下步骤：
S205，接收第一指示消息。
对于非车载设备，当接收到车机CDC发送的第一指示消息，例如第一指示消息是系统广播消息。然后根据系统广播消息确定是否允许该非车载设备接入车机CDC。在一个例子中，例如可以根据系统广播消息中携带的系统状态指示信息，确定当前车机CDC上运行的系统的系统状态，并根据系统状态确定是否允许该非车载设备接入车机CDC。当然，在其它例子中，若车机CDC发送的第一指示消息中直接指示了该非车载设备是否允许接入车机CDC，则可以根据第一指示消息中的信息，若不允许接入车机CDC则执行S207，若允许接入车机CDC则执行S208。
S206，确定系统状态是否为预设系统状态。应当注意的是，该步骤为可选的，仅 针对第一指示消息中包含有系统状态指示信息的情况。若第一指示消息中存在用于直接指示是否接入的信息时，则无需确定系统状态。
具体的，非车载设备根据S205中确定的系统状态是否为预先设置的预设系统状态。
在一个例子中，若预设的系统状态为系统准备状态或是车载设备接入状态，则确定该非车载设备不允许接入车机CDC，执行S207，否则确定该非车载设备允许接入车机CDC，执行S208。当然还可以是任意其它等效的系统状态，本申请在此不做限定。但可以理解的是，在该例子中预设的系统状态运行时，车载设备正在进行设备接入。
在另一个例子中，若预设的系统状态为系统运行状态或是允许接入状态，则确定该非车载设备允许接入车机CDC，执行S208；否则确定该非车载设备不允许接入车机CDC，执行S207。当然还可以是任意其它等效的系统状态，本申请在此不做限定。但可以理解的是，在该例子中预设的系统状态运行时，车载设备已经完成了设备接入。
S207，禁止非车载设备发起随机接入请求。
禁止非车载设备向车机CDC发起随机接入请求。
S208，允许非车载设备发起随机接入请求。
允许非车载设备向车机CDC发起随机接入请求。
本申请通过系统广播中携带有系统状态指示信息，当车载设备进行自检或是与车机CDC建立连接时，禁止非车载设备发起随机接入请求。避免了由于非车载设备在这一阶段发起随机接入请求，而对车机CDC检查车载设备状态以及车载设备的接入产生的影响。从而保障了车载设备以及一些基本业务能够正常运行。
图3为本申请实施例提供的另一种CDC、车载设备和非车载设备信息交互图。
图3示出了另一种CDC、车载设备和非车载设备信息交互图。相较于图2中S201中确定的系统状态，在另一种情况下，还可以通过时间门限的方式进行代替。例如可以执行S301。
S301，发送第一指示消息。
车机CDC发送第一指示消息，以便非车载设备接收第一指示消息后，确定是否允许接入车机CDC。可选的，第一指示消息可以是系统广播消息。当然可以理解的是，本申请并不限制第一指示消息的发送方式，可以是广播，也可以组播等其它任意等效的形式。可以理解的是，由于本申请主要针对车机CDC检查车载设备状态以及车载设备接入时，避免非车载设备在这一阶段发起随机接入请求而产生的影响。因此车载设备可以忽略第一指示消息中的时间门限信息。当然在一些例子中，车载设备也可以根据时间门限信息确定是否接入车机CDC。
在一些实施例中，第一指示消息中可以携带时间门限信息。其中，时间门限信息可以是时域指示信息，用于指示时间门限。时间门限信息可以是一个系统帧号(system frame number，SFN)，或是与某个固定参考帧的偏移量，例如固定参考帧可以是第一参考帧。其中，固定的参考帧可以是0号帧，当然还也可以是其它任意参考帧。当然时间门限还可以是一个具体数值，又或是一个时间范围，本申请在此不做限定。
在一种可选的实施方式中，时间门限信息可以是一个系统帧号。例如系统帧号256，当非车载设备确定当前系统帧号小于或等于系统帧号256的时候，则不允许该非车载设备发起接入。
在另一种可选的实施方式中，时间门限信息可以是相对于某个固定参考帧的一个或多个时域偏移量，例如时域偏移量可以是256ms，其中固定参考帧可以是车机CDC与车载设备或非车载设备预先协商或者约定的，或者可以是在协议中定义的。例如，固定参考帧为64号帧，假定单个帧时间长度为0.5ms。假定当前帧号为20，当前绝对时间则为10ms，对于非车载设备而言，则不允许在绝对时间为256ms+64*0.5＝288ms内发起接入。
在又一种可选的实施方式中，时间门限信息还可以是相对于第一信令的时域偏移量。时域偏移量可以是时间门限，指示在确定的时间范围内不允许发起随机接入。
其中，第一信令可以是车机CDC和非车载设备之间预先约定或者协商的某个信令，或者是在协议中定义的某个信令。例如，某个RRC信令。其中，RRC信令中包含SIB。例如，SIB可以是周期性的发送的。当SIB在某个固定的时间上发送时，则在一种可能的实施方式中，可以不允许非车载设备在车机CDC发送SIB之后的某个时间窗内发起接入，因为该车机CDC可能在这段时间需要处理其他事情。则从车机CDC发送SIB的时刻+【时域偏移1，时域偏移2】，则终端不允许在【CDC发送SIB的时刻+时域偏移1，CDC发送SIB的时刻+时域偏移2】时间窗内向CDC发送随机接入。可以理解的，RRC信令还可能承载在管理帧内。应当注意的是【时域偏移1，时域偏移2】可以通过信元或是某几个比特位进行表示。
再例如，在一种可能的实施方式中，也可以不允许非车载设备在获取某个RRC信令(例如第一RRC信令)之后的某个时间窗内发起接入，因为该车机CDC可能在这段时间需要处理其他事情。例如，非车载设备成功接收第一RRC信令的时刻为第一时刻，则则终端不允许在【第一时刻+时域偏移1，第一时刻+时域偏移2】的时间窗内向车机CDC发送随机接入。可以理解的，RRC信令可能承载在控制帧内。
可以理解的是，时间门限信息可以是一个时域偏移量或是多个时域偏移量。
为了保障在车载设备自检或者接入车机CDC时不被非车载设备的接入所影响，因此，第一指示消息中携带的时间门限信息可以是针对非车载设备的。在一个例子中，可以针对不同的非车载设备设置不同的时间门限。当然若存在多个非车载设备组成的设备组，其中，设备组可以采用阵列的形式。也可以针对不同的非车载设备阵列设置不同的时间门限，本申请在此不做限定。在另一个例子中，对于时间门限在系统广播消息中的表现形式，可以是显式的，当然也可以是隐式的。其实现过程可以参考S201，为方便描述，在此不再赘述。
对于时间门限的设定，车机CDC可以根据车载设备进行自检或是与车机CDC建立连接的情况进行设定。
在S301之后执行S202和S203，图3中S202和S203的实施过程与图2中S202和S203相同，为方便描述，在此不再赘述。
在S203之后可以执行S302。
S302，接收响应消息。进一步的，生成第二指示消息。
该步骤302的执行对应S203。可以理解的是，当接收到响应消息后，车机CDC可以针对不同的非车载设备重新设置时间门限。若车机CDC未接收到响应消息，则可以无需重新设置时间门限。在其它例子中，车机CDC也可以周期性的、半周期性的或 非周期性的设置时间门限，而无需参考是否接收到车载设备发送的响应消息。
具体的，接收响应消息后，可以重新设置时间门限。可以理解的，接收响应消息与重新设置时间门限可能存在一定的关联，也可以是相互独立的。
车机CDC接收到车载设备发送的响应消息后，确定车载设备的设备状态情况。并根据车载设备的设备状态情况重新设置时间门限。然后根据新的时间门限可以确定第二指示消息。其中，第二指示消息为新的系统广播消息。新的系统广播消息与S301中的系统广播消息类型相同，或者类型也可以不同，为方便描述，在此不再赘述。
继续回到S301。在车机CDC发送第一指示消息之后，非车载设备也可以接收到车机CDC发送的第一指示消息，因此在S301之后还可以执行以下步骤：
S303，接收第一指示消息。
对于非车载设备，当接收到车机CDC发送的第一指示消息，例如第一指示消息是系统广播消息。然后根据系统广播消息确定是否允许该非车载设备接入车机CDC。在一个例子中，例如可以根据系统广播消息中携带的时间门限信息，确定车机CDC赋予该非车载设备的时间门限，并根据该非车载设备的时间门限确定是否允许该非车载设备接入车机CDC。当然，在其它例子中，若车机CDC发送的第一指示消息中直接指示了该非车载设备是否允许接入车机CDC，则可以根据第一指示消息中的信息，若不允许接入车机CDC则执行S207，若允许接入车机CDC则执行S208。
S304，确定当前时刻是否满足时间门限。应当注意的是，该步骤为可选的，仅针对第一指示消息中包含有时间门限信息的情况。对于第一指示消息中直接指示是否接入，则无需确定时间门限是否满足时间门限。
具体的，该非车载设备确定当前时刻是否满足时间门限。
在一个例子中，若当前时刻已经到达时间门限规定的时间时，则确定该非车载设备不允许接入车机CDC，执行S207，否则确定该非车载设备允许接入车机CDC，执行S208。当然时间门限可以是一个系统帧号，或是与某个固定参考帧的偏移量。
S207和S208的实施过程与图2中S207和S208实施过程相同，为方便描述，在此不再赘述。
本申请通过系统广播中携带有时间门限信息，保障了在达到预设的时间门限之前，禁止非车载设备发起随机接入请求；或是在达到预设的时间门限之后，允许非车载设备发起随机接入请求。避免了由于非车载设备在这一阶段发起随机接入请求，而对CDC检查车载设备状态以及车载设备的接入产生的影响。从而保障了车载设备以及一些基本业务能够正常运行。
图4为本申请实施例提供的又一种CDC、车载设备和非车载设备信息交互图。
图4示出了又一种CDC、车载设备和非车载设备信息交互图。相较于图2中S201确定的系统状态和图3中S301设置的时间门限，在又一种情况下，还可以通过设置的接入指示信息方式进行代替。例如可以执行S401。
S401，发送第一指示消息。
车机CDC发送第一指示消息，以便车载设备或非车载设备接收第一指示消息后，确定是否允许接入车机CDC。可选的，第一指示消息可以是系统广播消息。当然可以理解的是，本申请并不限制第一指示消息的发送方式，可以是广播，也可以组播等其 它任意等效的形式。
在一些实施例中，系统广播消息中可以携带接入指示信息。其中，接入指示信息可以是设备类型与接入关系的映射表，或者说，接入指示信息可以指示设备类型与接入关系的映射关系。该映射表或者映射关系用于指示哪些类型的设备可以发起随机接入请求，而哪些类型的设备禁止发起随机接入请求。在一个例子中，设备类型可以分为车载设备、非车载设备；或是分为麦克风、扬声器、手机等；又或是车载设备、曾经连接过车机CDC、从未连接过车机CDC等等，设备类型也可以通过相应的类型索引或者编号来指示，本申请在此不做限定。
其中设备类型与接入关系的映射表可以是显示的，也可以是隐式的。例如，可以配置显示对应表，例如，表1示出的。需要说明的是，本申请方案涉及的所有表格都是为了体现一种对应关系，仅仅是一种对应关系的表现形式，任何能够体现对应关系的其它表现形式都可以替代表格，但是本申请用表格统一表示任意可能的表现形式。
终端设备 接入关系
车载麦克风 0
车载扬声器 0
手机 1
表1
可以看出，若0表示允许接入，1表示不允许接入，则表1表示了允许车载麦克风、车载扬声器接入，不允许手机接入。当然可以理解的，也可以用设备类型指示信息来指示响应的设备类型，例如，采用“000”标识车载麦克风，则{000,0}可以体现允许车载麦克风接入。
若设备类型与接入关系的映射表为隐式的，则例如可以根据协议约定，采用位图(bit map)的形式指示允许那些设备类型接入。一般的，根据协议约定，可以bitmap的每一位分别标识一种设备类型。假定bitmap长度为3位，每个位置依次对应车载麦克风、车载扬声器、手机。则通过发送bitmap{001}，表示允许车载麦克风、车载扬声器接入，不允许手机接入。当然，在其它例子中，还也可以用1表示允许接入，0表示不允许接入，或是用其它任意数字进行等效替换，本申请在此不作限定。
在一个例子中，针对不同类型的设备，还可以具备不同的设备优先级。设备类型与接入关系的映射表则可以替换为基于设备优先级与接入关系映射表。用于表示不同优先级的设备是否允许发起随机接入请求。当然可以理解的，多种不同类型的设备可能具有相同的设备优先级。可选的，设备优先级也可以是接入优先级，一般的，优先级较高的设备可以具有较高的接入优先级。例如，车载麦克风和车载扬声器设备优先级为1，手机设备优先级为2。则如果第一指示消息中携带设备优先级为1，则允许车载麦克风和车载扬声器接入。
在另一个例子中，若存在多个非车载设备组成的设备组，其中，设备组可以采用阵列的形式。可以针对不同的非车载设备阵列设置设备类型与接入关系的映射表或基于设备优先级与接入关系映射表，本申请在此不做限定。在另一个例子中，对于接入指示信息在系统广播消息中的表现形式，可以是显式的，当然也可以是隐式的。其实 现过程可以参考S201，为方便描述，在此不再赘述。
在S401之后执行S202和S203，图4中S202和S203的实施过程与图2中S202和S203相同，为方便描述，在此不再赘述。
在S203之后可以执行S402。
S402，接收响应消息。进一步的，生成第二指示消息。
该步骤402的执行对应S203。可以理解的，如果车机CDC接收响应消息，确定预先期望的车载设备状态都正常，则此时车机CDC可以重新设置接入指示信息，并通过第二指示消息允许非车载设备接入。当然，如果车机CDC预先期望的车载设备设备出现异常，或者需要进行其它处理，车机CDC也可以不重新设置接入指示信息。由于系统广播消息一般都是周期性发送的，此时非车载设备仍然根据第一指示消息指示进行操作。
车机CDC接收到车载设备发送的响应消息后，确定车载设备的设备状态情况。并根据车载设备的设备状态情况重新设置接入指示信息。然后根据新的接入指示信息可以确定第二指示消息。其中，第二指示消息为新的系统消息。新的系统消息与S301中的系统广播类型相同，或者类型也可以不同，为方便描述，在此不再赘述。
继续回到S401。在车机CDC发送第一指示消息之后，非车载设备也可以接收到车机CDC发送的第一指示消息，因此在S401之后还可以执行以下步骤：
S403，接收第一指示消息。
对于非车载设备，当接收到车机CDC发送的第一指示消息，例如第一指示消息是系统广播消息。然后根据系统广播消息确定是否允许该非车载设备接入车机CDC。在一个例子中，例如可以根据系统广播消息中携带的接入指示信息，确定该非车载设备的设备类型与接入关系，并根据该设备类型与接入关系确定是否允许该非车载设备接入车机CDC。当然，在其它例子中，若车机CDC发送的第一指示消息中直接指示了该非车载设备是否允许接入车机CDC，则可以根据第一指示消息中的信息，若不允许接入车机CDC则执行S207，若允许接入车机CDC则执行S208。
S404，确定接入指示信息是否满足预设条件。应当注意的是，该步骤为可选的，仅针对第一指示消息中包含有接入指示信息的情况。对于第一指示消息中直接指示是否接入，则无需确定接入指示信息是否满足预设条件。
具体的，非车载设备根据S403中确定的设备类型与接入关系，确定该非车载设备的设备类型是否允许发起随机接入请求。
在一个例子中，若该非车载设备的设备类型不允许发起随机接入请求，则确定该非车载设备不允许接入车机CDC，执行S207；若该非车载设备的设备类型允许发起随机接入请求，则确定该非车载设备允许接入车机CDC，执行S208。
S207和S208的实施过程与图2中S207和S208实施过程相同，为方便描述，在此不再赘述。
本申请通过系统广播中携带有接入指示信息，保障了仅对设备类型符合预设条件的设备，允许其发送随机接入请求，对于设备类型不符合预设条件的设备，禁止其发送随机接入请求。避免了在CDC检查车载设备状态以及车载设备接入时，由于非车载设备发起随机接入请求而产生的影响。从而保障了车载设备以及一些基本业务能够正 常运行。
当然本领域技术人员应当注意，对于图3设置的时间门限以及图4中设置的接入指示信息，可以与图2中确定的系统状态同时存在，当然也可以选择其中的任意一个或任意两个，以达到车机CDC控制车载设备与非车载设备的接入。
图5为本申请实施例提供的一种接入控制方法流程图。
如图5所示，本申请提供了一种接入控制方法，该方法可以实现上述图2至图4交互过程。方法可以包括以下步骤：
S501，确定第一设备的状态为第一状态。
S502，发送第一指示信息。其中，第一指示信息用于指示是否允许至少一个第二设备接入第一设备。可选的，第一指示信息承载于系统消息上或者以广播的方式发送，例如系统消息可以是系统广播消息。其中，第一指示信息可以是MIB，或是SIB，或是广播帧。其中，MIB可以承载在PBCH上。SIB一般包含在RRC信令上。
在一种可能的实施方式中，第一状态包括系统准备状态、车载设备接入状态中的至少一个，第一指示信息用于指示不允许至少一个第二设备接入；或者第一状态包括系统运行状态、允许接入状态中的至少一个，第一指示信息用于指示允许第二设备接入。其中，系统准备状态和/或车载设备接入状态可以用于表示此时车载设备正在接入车机CDC，或是此时车载设备正在进行自检，以便非车载设备根据此类系统状态选择不接入车机CDC。系统运行状态和/或允许接入状态可以用于表示此时车载设备已经接入车机CDC，此时可以允许非车载设备接入车机CDC。
在一种可能的实施方式中，第一指示信息用于指示是否允许至少一个第三设备接入。
在一种可能的实施方式中，第一指示信息包含设备类型信息，至少一个第二设备的设备类型属于设备类型信息所指示的至少一个设备类型。进一步的，第二设备根据设备类型信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。
在一种可能的实施方式中，第一指示信息包含优先级信息，至少一个第二设备的优先级属于优先级信息指示的至少一个优先级。第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。进一步的，第二设备根据优先级信息以及接入指示信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息包含第一时间信息，第一时间信息用于指示在第一时间范围内不允许至少一个第二设备接入第一设备。
在一种可能的实施方式中，第一时间范围为相对于第一参考帧的时域偏移量，或相对于第一信令的时域偏移量。其中，第一参考帧可以是车机CDC和非车载设备之间预先约定或者协商的第一系统帧号，或者是在协议中定义的第一系统帧号；或者，第一信令可以是车机CDC和非车载设备之间预先约定或者协商的某个信令，或者是协议中定义的某个信令。例如，第一信令可以为RRC信令。以及，时域偏移量可以是一个或多个。
在一种可能的实施方式中，第一指示信息包括资源指示信息，资源指示信息指示 了用于至少一个第三设备的资源；或者，资源指示信息指示的资源不用于至少一个第二设备。
在一种可能的实施方式中，资源指示信息指示的资源与至少一个第三设备的设备类型和/或优先级存在对应关系。
在一种可能的实施方式中，第一指示信息包含布尔型变量或者枚举型变量。当然还可以是任意其它等效的变量类型。
在一种可能的实施方式中，设备类型包括以下至少一项：车载设备和非车载设备。
图6为本申请实施例提供的另一种接入控制方法流程图。
如图6所示，本申请提供了另一种接入控制方法，该方法可以实现上述图2至图4的交互过程。方法可以包括以下步骤：
S601，收来自第一设备的第一指示信息。可选的，第一指示信息承载于系统消息中或者以广播的方式发送。例如系统消息可以是系统广播消息。其中，第一指示信息可以是MIB，或是SIB，或是广播帧。其中，MIB可以承载在PBCH上。SIB一般包含在RRC信令上。
S602，根据第一指示信息，确定是否允许第二设备接入第一设备。
在一种可能的实施方式中，第一指示信息用于指示是否允许至少一个第三设备接入。
在一种可能的实施方式中，第一指示信息包含设备类型信息，至少一个第二设备的设备类型属于设备类型信息所指示的至少一个设备类型。进一步的，第二设备根据设备类型信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。
在一种可能的实施方式中，第一指示信息包含优先级信息，至少一个第二设备的优先级属于优先级信息指示的至少一个优先级。第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。进一步的，第二设备根据优先级信息以及接入指示信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息包含第一时间信息，第一时间信息用于指示在第一时间范围内不允许至少一个第二设备接入第一设备。
在一种可能的实施方式中，第一时间范围为相对于第一参考帧的时域偏移量，或相对于第一信令的时域偏移量。其中，第一参考帧可以是车机CDC和非车载设备之间预先约定或者协商的第一系统帧号，或者是在协议中定义的第一系统帧号；或者，第一信令可以是车机CDC和非车载设备之间预先约定或者协商的某个信令，或者是协议中定义的某个信令。例如，第一信令可以为RRC信令。以及，时域偏移量可以是一个或多个。在一种可能的实施方式中，第一指示信息包括资源指示信息，资源指示信息指示了用于至少一个第三设备的资源；或者，资源指示信息指示的资源不用于至少一个第二设备。
在一种可能的实施方式中，资源指示信息指示的资源与至少一个第三设备的设备类型和/或优先级存在对应关系。
在一种可能的实施方式中，第一指示信息包含布尔型变量或者枚举型变量。当然 还可以是任意其它等效的变量类型。
在一种可能的实施方式中，第一设备为车机CDC，第三设备为车载设备，第二设备为非车载设备。
在一种可能的实施方式中，第二设备为手机。
图7为本申请实施例提供的一种接入控制装置示意图。
如图7所示，本申请提供了一种接入控制装置700，其中接入控制装置700可以是第一设备本身，例如车机CDC，又或是，接入控制装置可以为第一设备中的芯片或是内部元件等等。当然接入控制装置还可以是手机、平板电脑、桌面型计算机、膝上型计算机、手持计算机、笔记本电脑、超级移动个人计算机(ultra-mobile personal computer，UMPC)、上网本，以及蜂窝电话、个人数字助理(personal digital assistant，PDA)、增强现实(augmented reality，AR)设备、虚拟现实(virtual reality，VR)设备、人工智能(artificial intelligence,AI)设备、可穿戴式设备、车载设备、智能家居设备和/或智慧城市设备，本申请实施例对第一设备的具体类型不作特殊限制。
接入控制装置700可以实现上述图2至图4交互过程。其中，接入控制装置700包括：处理单元701，用于确定第一设备的状态为第一状态；以及发送单元702，用于发送第一指示信息，第一指示信息用于指示是否允许至少一个第二设备接入第一设备。可选的，第一指示信息承载于系统消息中，或者，第一指示信息以广播的方式发送。其中，第一指示信息可以是MIB或是SIB，或是广播帧(broadcast frame)。其中，MIB可以承载在PBCH上。SIB一般包含在RRC信令上。可选的，第一指示信息以广播的方式发送。可选的，第一指示信息以广播的方式发送。
在一种可能的实施方式中，第一状态包括系统准备状态、车载设备接入状态中的至少一个，第一指示信息用于指示不允许至少一个第二设备接入；或者第一状态包括系统运行状态、允许接入状态中的至少一个，第一指示信息用于指示允许第二设备接入。其中，系统准备状态和车载设备接入状态可以用于表示此时车载设备正在接入车机CDC，或是此时车载设备正在进行自检，以便非车载设备根据此类系统状态选择不接入车机CDC。系统运行状态和允许接入状态可以用于表示此时车载设备已经接入车机CDC，此时可以允许非车载设备接入车机CDC。
在一种可能的实施方式中，第一指示信息用于指示是否允许至少一个第三设备接入。
在一种可能的实施方式中，第一指示信息包含设备类型信息，至少一个第二设备的设备类型属于设备类型信息所指示的至少一个设备类型。进一步的，第二设备根据设备类型信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。
在一种可能的实施方式中，第一指示信息包含优先级信息，至少一个第二设备的优先级属于优先级信息指示的至少一个优先级。第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。进一步的，第二设备根据优先级信息以及接入指示信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息包含第一时间信息，第一时间信息用于 指示在第一时间范围内不允许至少一个第二设备接入第一设备。
在一种可能的实施方式中，第一时间范围为相对于第一参考帧的时域偏移量，或相对于第一信令的时域偏移量。其中，第一参考帧可以是车机CDC和非车载设备之间预先约定或者协商的第一系统帧号，或者是在协议中定义的第一系统帧号；或者，第一信令可以是车机CDC和非车载设备之间预先约定或者协商的某个信令，或者是协议中定义的某个信令。例如，第一信令可以为RRC信令。以及，时域偏移量可以是一个或多个。
在一种可能的实施方式中，第一指示信息包括资源指示信息，资源指示信息指示了用于至少一个第三设备的资源；或者，资源指示信息指示的资源不用于至少一个第二设备。
在一种可能的实施方式中，资源指示信息指示的资源与至少一个第三设备的设备类型和/或优先级存在对应关系。
在一种可能的实施方式中，第一指示信息包含布尔型变量或者枚举型变量。当然还可以是任意其它等效的变量类型。
在一种可能的实施方式中，设备类型包括以下至少一项：车载设备和非车载设备。
图8为本申请实施例提供的一种接入装置示意图。
如图8所示，本申请提供了一种接入装置800，其中接入装置800可以是第二设备或者第三设备本身，例如车载设备或非车载设备，又或是接入装置可以是第二设备或者第三设备中的芯片或者内部元件等。如车载设备或非车载设备中的芯片或是内部元件。当然接入装置还可以是手机、平板电脑、桌面型计算机、膝上型计算机、手持计算机、笔记本电脑、UMPC、上网本，以及蜂窝电话、PDA、AR设备、VR设备、AI设备、可穿戴式设备、车载设备、智能家居设备和/或智慧城市设备，本申请实施例对第一设备的具体类型不作特殊限制。
接入装置800可以用于实现上述图2至图4交互过程。其中，接入装置800包括：接收单元801和处理单元802。其中：接收单元801用于接收来自第一设备的第一指示信息；以及处理单元802用于根据第一指示信息，确定是否允许第二设备接入第一设备。可选的，第一指示信息承载于系统消息中或者以广播的方式发送，例如系统消息可以是系统广播消息。其中，第一指示信息可以是MIB，或是SIB，或是广播帧。其中，MIB可以承载在PBCH上。SIB一般包含在RRC信令上。
在一种可能的实施方式中，第一指示信息用于指示是否允许至少一个第三设备接入。
在一种可能的实施方式中，第一指示信息包含设备类型信息，至少一个第二设备的设备类型属于设备类型信息所指示的至少一个设备类型。进一步的，第二设备根据设备类型信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。
在一种可能的实施方式中，第一指示信息包含优先级信息，至少一个第二设备的优先级属于优先级信息指示的至少一个优先级。第一指示信息还包含接入指示信息，接入指示信息用于指示是否允许接入第一设备。进一步的，第二设备根据优先级信息 以及接入指示信息确定是否接入第一设备。
在一种可能的实施方式中，第一指示信息包含第一时间信息，第一时间信息用于指示在第一时间范围内不允许至少一个第二设备接入第一设备。
在一种可能的实施方式中，第一时间范围为相对于第一参考帧的时域偏移量，或相对于第一信令的时域偏移量。其中，第一参考帧可以是车机CDC和非车载设备之间预先约定或者协商的第一系统帧号，或者是在协议中定义的第一系统帧号；或者，第一信令可以是车机CDC和非车载设备之间预先约定或者协商的某个信令，或者是协议中定义的某个信令。例如，第一信令可以为RRC信令。以及，时域偏移量可以是一个或多个。
在一种可能的实施方式中，第一指示信息包括资源指示信息，资源指示信息指示了用于至少一个第三设备的资源；或者，资源指示信息指示的资源不用于至少一个第二设备。
在一种可能的实施方式中，资源指示信息指示的资源与至少一个第三设备的设备类型和/或优先级存在对应关系。
在一种可能的实施方式中，第一指示信息包含布尔型变量或者枚举型变量。当然还可以是任意其它等效的变量类型。
在一种可能的实施方式中，第一设备为车机CDC，第三设备为车载设备，第二设备为非车载设备。
在一种可能的实施方式中，第二设备为手机。
图9为本申请实施例提供的一种通信系统示意图。
如图9所示，本申请提供了一种通信系统900，该通信系统900包含如图7所示的接入控制装置700。
其中，接入控制装置700包含至少一个处理器以及通信接口。进一步的，还可包括至少一个存储器。可选的，接入控制装置700中的处理器、存储器、通信接口可以通过总线建立通信连接。通信接口为至少一个处理器提供信息输入和/或输出。
至少一个处理器可以包括中央处理器(central processing unit，CPU)、图形处理器(graphics processing unit，GPU)、数字信号处理(digital signal process，DSP)芯片中的至少一个。
存储器可以包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；存储器也可以包括非易失性存储器(英文：non-volatile memory)，例如只读存储器(read-only memory，ROM)，快闪存储器，硬盘(hard disk drive，HDD)或固态硬盘(solid state drive，SSD)；存储器2002还可以包括上述种类的存储器的组合。
至少一个处理器用于与存储器耦合，以及读取并执行存储器中的指令。当处理器运行时执行指令，使得处理器可以实现接入控制装置700所示的功能。
在一个可能的实施方式中，接入控制装置700可以是能实现上述图7所述功能的芯片，或是可以实现上述图7所述功能的车辆。
在一种可能的实施方式中，该通信系统900还包含如图8所示的接入装置800。
其中，接入装置800包含有，处理器、存储器、通信接口和总线。接入装置800 中的处理器、存储器、通信接口可以通过总线建立通信连接。
处理器可以为中央处理器(central processing unit，CPU)。
存储器可以包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；存储器也可以包括非易失性存储器(英文：non-volatile memory)，例如只读存储器(read-only memory，ROM)，快闪存储器，硬盘(hard disk drive，HDD)或固态硬盘(solid state drive，SSD)；存储器2002还可以包括上述种类的存储器的组合。
处理器用于与存储器耦合，以及读取并执行存储器中的指令。当处理器运行时执行指令，使得处理器可以实现接入装置800所示的功能。
在一个可能的实施方式中，接入装置800可以是能实现上述图8所述功能的芯片。
本申请还提供了一种运输工具或者智能设备，例如无人机、汽车、无人运输车或者机器人等，所述运输工具或者智能设备包含上述接入控制装置。进一步的可选的，运输工具还包含上述接入装置。
本申请提供的一种接入控制方法、装置及通信系统，通过在发送的系统广播消息中携带有系统状态信息、时间门限和/或接入指示信息，使得非车载设备在接收到系统广播消息后，根据系统状态信息、时间门限和/或接入指示信息选择是否发起随机接入请求。避免了由于非车载设备在这一阶段发起随机接入请求，而对CDC检查车载设备状态以及车载设备的接入产生的影响。从而保障了车载设备以及一些基本业务能够正常运行。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请实施例所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
结合本文中所公开的实施例描述的方法或算法的步骤可以用硬件、处理器执行的软件模块，或者二者的结合来实施。软件模块可以置于随机存储器(RAM)、内存、只读存储器(ROM)、电可编程ROM、电可擦除可编程ROM、寄存器、硬盘、可移动磁盘、CD-ROM、或技术领域内所公知的任意其它形式的存储介质中。
以上所述的具体实施方式，对本申请的目的、技术方案和有益效果进行了进一步的详细说明，所应理解的是，以上所述仅为本申请的具体实施方式而已，并不用于限定本申请的保护范围，凡在本申请的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本申请的保护范围之内。

Claims (56)

  1. 一种接入控制方法，其特征在于，所述方法包括：
    确定第一设备的状态为第一状态；
    发送第一指示信息，所述第一指示信息用于指示是否允许至少一个第二设备接入所述第一设备。
  2. 根据权利要求1所述的接入控制方法，其特征在于，所述第一状态包括系统准备状态、车载设备接入状态中的至少一个，所述第一指示信息用于指示不允许所述至少一个第二设备接入；或者
    所述第一状态包括系统运行状态、允许接入状态中的至少一个，所述第一指示信息用于指示允许所述第二设备接入。
  3. 根据权利要求1或2所述的接入控制方法，其特征在于，所述第一指示信息用于指示是否允许至少一个第三设备接入。
  4. 根据权利要求1-3任一项所述的接入控制方法，其特征在于，所述第一指示信息包含设备类型信息，所述至少一个第二设备的设备类型属于所述设备类型信息所指示的至少一个设备类型。
  5. 根据权利要求4所述的接入控制方法，其特征在于，所述第一指示信息还包含接入指示信息，所述接入指示信息用于指示是否允许接入所述第一设备。
  6. 根据权利要求1-4任一项所述的接入控制方法，其特征在于，所述第一指示信息包含优先级信息，所述至少一个第二设备的优先级属于所述优先级信息指示的至少一个优先级。
  7. 根据权利要求6所述的接入控制方法，其特征在于，所述第一指示信息还包含接入指示信息，所述接入指示信息用于指示是否允许接入所述第一设备。
  8. 根据权利要求4-6任一项所述的接入控制方法，其特征在于，所述第一指示信息包含第一时间信息，所述第一时间信息用于指示在第一时间范围内不允许所述至少一个第二设备接入所述第一设备。
  9. 根据权利要求8所述的接入控制方法，其特征在于，所述第一时间范围为相对于第一参考帧的时域偏移量，或相对于第一信令的时域偏移量。
  10. 根据权利要求1-9任一项所述的接入控制方法，其特征在于，所述第一指示信息包括资源指示信息，所述资源指示信息指示了用于至少一个第三设备的资源；或者，所述资源指示信息指示的资源不用于所述至少一个第二设备。
  11. 根据权利要求10所述的接入控制方法，其特征在于，所述资源指示信息指示的资源与所述至少一个第三设备的设备类型和/或优先级存在对应关系。
  12. 根据权利要求1-11任一项所述的接入控制方法，其特征在于，所述第一指示信息包含布尔型变量或者枚举型变量。
  13. 根据权利要求4,5或者11所述的接入控制方法，其特征在于，所述设备类型包括以下至少一项：车载设备和非车载设备。
  14. 一种接入方法，其特征在于，所述方法包括：
    接收来自第一设备的第一指示信息；
    根据所述第一指示信息，确定是否允许第二设备接入所述第一设备。
  15. 根据权利要求14所述的接入方法，其特征在于，所述第一指示信息用于指示是否允许至少一个第三设备接入。
  16. 根据权利要求14或15所述的接入方法，其特征在于，所述第一指示信息包含设备类型信息，所述至少一个第二设备的设备类型属于所述设备类型信息所指示的至少一个设备类型。
  17. 根据权利要求16所述的接入方法，其特征在于，所述第一指示信息还包含接入指示信息，所述接入指示信息用于指示是否允许接入所述第一设备。
  18. 根据权利要求14-17任一项所述的接入方法，其特征在于，所述第一指示信息包含优先级信息，所述至少一个第二设备的优先级属于所述优先级信息指示的至少一个优先级。
  19. 根据权利要求18所述的接入方法，其特征在于，所述第一指示信息还包含接入指示信息，所述接入指示信息用于指示是否允许接入所述第一设备。
  20. 根据权利要求14-19任一项所述的接入方法，其特征在于，所述第一指示信息包含第一时间信息，所述第一时间信息用于指示在第一时间范围内不允许所述至少一个第二设备接入所述第一设备。
  21. 根据权利要求20所述的接入方法，其特征在于，所述第一时间范围为相对于第一参考帧的时域偏移量，或相对于第一信令的时域偏移量。
  22. 根据权利要求14-21任一项所述的接入方法，其特征在于，所述第一指示信息包括资源指示信息，所述资源指示信息指示了用于至少一个第三设备的资源；或者，所述资源指示信息指示的资源不用于所述至少一个第二设备。
  23. 根据权利要求22所述的接入方法，其特征在于，所述资源指示信息指示的资源与所述至少一个第三设备的设备类型和/或优先级存在对应关系。
  24. 根据权利要求14-23任一项所述的接入方法，其特征在于，所述第一指示信息包含布尔型变量或者枚举型变量。
  25. 根据权利要求14-24任一项所述的接入方法，其特征在于，所述第一设备为车机CDC，所述第三设备为车载设备，所述第二设备为非车载设备。
  26. 根据权利要求25所述的接入方法，其特征在于，所述第二设备为手机。
  27. 一种接入控制装置，其特征在于，所述装置包括：
    处理单元，用于确定第一设备的状态为第一状态；以及
    发送单元，用于发送第一指示信息，所述第一指示信息用于指示是否允许至少一个第二设备接入所述第一设备。
  28. 根据权利要求27所述的接入控制装置，其特征在于，所述第一状态包括系统准备状态、车载设备接入状态中的至少一个，所述第一指示信息用于指示不允许所述至少一个第二设备接入；或者
    所述第一状态包括系统运行状态、允许接入状态中的至少一个，所述第一指示信息用于指示允许所述第二设备接入。
  29. 根据权利要求27所述的接入控制装置，其特征在于，所述第一指示信息用于 指示是否允许至少一个第三设备接入。
  30. 根据权利要求27-29任一项所述的装置，其特征在于，所述第一指示信息包含设备类型信息，所述至少一个第二设备的设备类型属于所述设备类型信息所指示的至少一个设备类型。
  31. 根据权利要求30所述的装置，其特征在于，所述第一指示信息还包含接入指示信息，所述接入指示信息用于指示是否允许接入所述第一设备。
  32. 根据权利要求27-30任一项所述的装置，其特征在于，所述第一指示信息包含优先级信息，所述至少一个第二设备的优先级属于所述优先级信息指示的至少一个优先级。
  33. 根据权利要求32所述的装置，其特征在于，所述第一指示信息还包含接入指示信息，所述接入指示信息用于指示是否允许接入所述第一设备。
  34. 根据权利要求30-32任一项所述的装置，其特征在于，所述第一指示信息包含第一时间信息，所述第一时间信息用于指示在第一时间范围内不允许所述至少一个第二设备接入所述第一设备。
  35. 根据权利要求34所述的装置，其特征在于，所述第一时间范围为相对于第一参考帧的时域偏移量，或相对于第一信令的时域偏移量。
  36. 根据权利要求27-35任一项所述的装置，其特征在于，所述第一指示信息包括资源指示信息，所述资源指示信息指示了用于至少一个第三设备的资源；或者，所述资源指示信息指示的资源不用于所述至少一个第二设备。
  37. 根据权利要求36所述的装置，其特征在于，所述资源指示信息指示的资源与所述至少一个第三设备的设备类型和/或优先级存在对应关系。
  38. 根据权利要求27-37任一项所述的装置，其特征在于，所述第一指示信息包含布尔型变量或者枚举型变量。
  39. 根据权利要求30,31或者37所述的装置，其特征在于，所述设备类型包括以下至少一项：车载设备和非车载设备。
  40. 一种接入装置，其特征在于，所述装置包括：接收单元和处理单元；其中，
    所述接收单元用于接收来自第一设备的第一指示信息；以及
    所述处理单元用于根据所述第一指示信息，确定是否允许第二设备接入所述第一设备。
  41. 根据权利要求40所述的装置，其特征在于，所述第一指示信息用于指示是否允许至少一个第三设备接入。
  42. 根据权利要求40或41所述的装置，其特征在于，所述第一指示信息包含设备类型信息，所述至少一个第二设备的设备类型属于所述设备类型信息所指示的至少一个设备类型。
  43. 根据权利要求42所述的装置，其特征在于，所述第一指示信息还包含接入指示信息，所述接入指示信息用于指示是否允许接入所述第一设备。
  44. 根据权利要求40-43任一项所述的装置，其特征在于，所述第一指示信息包含优先级信息，所述至少一个第二设备的优先级属于所述优先级信息指示的至少一个 优先级。
  45. 根据权利要求44所述的装置，其特征在于，所述第一指示信息还包含接入指示信息，所述接入指示信息用于指示是否允许接入所述第一设备。
  46. 根据权利要求40-45任一项所述的装置，其特征在于，所述第一指示信息包含第一时间信息，所述第一时间信息用于指示在第一时间范围内不允许所述至少一个第二设备接入所述第一设备。
  47. 根据权利要求46所述的装置，其特征在于，所述第一时间范围为相对于第一参考帧的时域偏移量，或相对于第一信令的时域偏移量。
  48. 根据权利要求40-47任一项所述的装置，其特征在于，所述第一指示信息包括资源指示信息，所述资源指示信息指示了用于至少一个第三设备的资源；或者，所述资源指示信息指示的资源不用于所述至少一个第二设备。
  49. 根据权利要求48所述的装置，其特征在于，所述资源指示信息指示的资源与所述至少一个第三设备的设备类型和/或优先级存在对应关系。
  50. 根据权利要求40-49任一项所述的装置，其特征在于，所述第一指示信息包含布尔型变量或者枚举型变量。
  51. 根据权利要求40-50任一项所述的装置，其特征在于，所述第一设备为车机CDC，所述第三设备为车载设备，所述第二设备为非车载设备。
  52. 根据权利要求51所述的装置，其特征在于，所述第二设备为手机。
  53. 一种计算机存储介质，其特征在于，所述计算机存储介质包括计算机指令，当所述计算机指令被至少一个处理器执行时，实现权利要求1-26任一项所述的方法。
  54. 一种计算机程序产品，其特征在于，所述计算机程序产品包含的程序代码被电子设备中的处理器执行时，实现权利要求1-26任一项所述的方法。
  55. 一种通信系统，其特征在于，所述系统包含如权利要求27-39任一项所述的接入控制装置。
  56. 根据权利要求55所述的通信系统，还包含如权利要求40-52任一项所述的接入装置。
PCT/CN2020/080672 2020-03-23 2020-03-23 一种接入控制方法、装置及通信系统 WO2021189191A1 (zh)

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