Information transmission method, device and system

Abstract

The invention discloses an information transmission method, device and system, which are used for flexibly controlling random access of terminal equipment. The method comprises: a terminal device receiving first information sent by a network device, and determining a first mode of the terminal device according to whether the first information contains configuration indication information of a random access opportunity or the contained configuration indication information of the random access opportunity, or the terminal device receiving second information sent by the network device, and determining the first mode of the terminal equipment according to the first mode of the terminal equipment associated with the characteristic parameter indicated by the second information or the first mode of the terminal equipment associated with the leading resource. The random access of the terminal equipment is configured according to at least one of the configuration indication information of the random access opportunity, the association relationship between the characteristic parameters and the terminal equipment and the association relationship between the preamble resources and the terminal equipment, so that the terminal equipment can be flexibly controlled to access the network equipment, the access quantity of the terminal equipment in the network equipment can be balanced, and the user experience is improved. Therefore, the network load is balanced.

Description

[0001] This application is a divisional application. The application number of the original application is 202010387505.3, and the original application date is May 9, 2020. The entire contents of the original application are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a method, device and system for information transmission. Background Art

[0003] Massive Machine Type Communication (mMTC) is a typical application scenario in the fifth generation of communication technology (New Radio, NR), and is widely used in smart grids, smart transportation, environmental protection, government work, public safety, smart homes, smart fire protection, industrial monitoring and personal health. There are a large number of terminal devices in the mMTC scenario. During initial access, many terminal devices may choose to access the cell at the same random access opportunity. However, if the cell is heavily loaded under the random access opportunity, most of the cell's resources may have been allocated to the terminal devices that have already accessed, resulting in fewer available resources remaining in the cell. Therefore, if these terminal devices are still allowed to access the cell using the random access opportunity, the cell may not be able to allocate resources to these newly accessed terminal devices. In this case, it is necessary to restrict the access of terminal devices.

[0004] In the existing solution, a cell can only restrict the access of all terminal devices, such as prohibiting all terminal devices from accessing the cell, or allowing all terminal devices to access the cell. Obviously, this method makes the flexibility of terminal devices accessing the cell poor. Summary of the invention

[0005] The present application provides a method, device and system for information transmission, which is used to restrict the random access of terminal devices according to one or more of the configuration indication information of random access opportunities, the association relationship between characteristic parameters and terminal devices, and the association relationship between leading resources and terminal devices. In this case, the terminal device can access the network device or not access the network device according to the first mode corresponding to itself, thereby improving the flexibility of the terminal device to access the network device. Furthermore, by controlling the access of the terminal device to the network device, the access amount of the terminal device in the network device can also be balanced to achieve the purpose of balancing the network load.

[0006] In a first aspect, the present application provides a method for information transmission, wherein a terminal device receives first information sent by a network device, wherein the first information may include configuration indication information of a random access opportunity, and the terminal device determines a first mode based on the configuration indication information of the random access opportunity, wherein the first mode is: whether the terminal device continues to access the network when the terminal device sends a random access request; or, the first mode is: whether the terminal device performs random access when the terminal device does not send a random access request.

[0007] In this design, by carrying the configuration indication information of the random access opportunity in the first information, the terminal device can use its own random access opportunity to access the network device or not to access the network device. In this way, on the one hand, the terminal device can be controlled to access the network device, so that the access volume of the terminal device in the network device can be balanced to achieve the purpose of balancing the network load. On the other hand, each terminal device can have its own first mode, for example, each terminal device can have its own random access opportunity, or some terminal devices can access the network device while some devices can not access the network device, so that the random access of each terminal device can be more flexible.

[0008] In another possible design, the terminal device receives the first information sent by the network device, and determines the first mode according to whether the first information contains the configuration indication information of the random access opportunity, the first mode is: when the terminal device sends a random access request, whether the terminal device continues to access the network; or, the first mode is: when the terminal device does not send a random access request, whether the terminal device performs random access. If the first information does not contain the configuration indication information of the random access opportunity, the terminal device may not access the network device, for example, the network device may not enable the configuration of the random access opportunity of the terminal device, or the terminal device may terminate the access to the network, or the terminal device may not perform random access. If the first information contains the configuration indication information of the random access opportunity, the terminal device may access the network, for example, the network device enables the configuration of the random access opportunity of the terminal device, or the terminal device accesses the network, or the terminal device performs random access.

[0009] In this design, the terminal device is instructed not to access the network device by utilizing the configuration indication information that does not include the random access opportunity in the first information, so that no additional resources need to be occupied for the situation of not accessing the network device, thereby achieving the purpose of saving network overhead.

[0010] In another possible design, the terminal device receives second information sent by the network device, and the second information indicates a first mode of the terminal device associated with each characteristic parameter of one or more characteristic parameters, the first mode being: when the terminal device sends a random access request, whether the terminal device continues to access the network; or, the first mode is: when the terminal device does not send a random access request, whether the terminal device performs random access.

[0011] With this design, since an association relationship is established between the terminal device and the characteristic parameter, by configuring the random access of each characteristic parameter, the random access of the terminal device associated with the characteristic parameter can be configured. In this way, if different random access configurations are set for the terminal devices associated with various characteristic parameters, the random access of one or more groups of terminal devices can be restricted in the form of terminal device grouping. This method can configure the random access of each terminal device more flexibly at a finer granularity.

[0012] In another possible design, the terminal device receives second information sent by the network device, and the second information indicates a first mode of the terminal device associated with one or more leading resources, the first mode being: when the terminal device sends a random access request, whether the terminal device continues to access the network; or, the first mode is: when the terminal device does not send a random access request, whether the terminal device performs random access.

[0013] With this design, since an association relationship is established between the terminal device and the leading resource, the random access of the terminal device associated with the leading resource group can be configured by configuring the random access of each group of leading resources. In this case, if different random access configurations are set for the terminal devices associated with each group of leading resources, the terminal devices can access the network device or not access the network device in the form of groups according to the random access configuration of the leading resource associated with them. In this way, the random access of the terminal devices associated with different leading resources can be configured more flexibly at a finer granularity.

[0014] In a possible design, the terminal device may refer to a certain type of terminal device, such as a reduced capability (REDCAP) terminal device. Through this design, the network device can configure random access for a certain type of terminal device, so that the terminal device of this type can access the network device or not access the network device using a first mode different from other types of terminal devices, so as to improve the flexibility of random access of the terminal device of this type.

[0015] In a possible design, when the configuration indication information of the random access opportunity is in the first state, the configuration indication information of the random access opportunity can be used to indicate: not enabling the configuration of the random access opportunity of the terminal device, or terminating the access to the network, or not performing random access. Alternatively, when the configuration indication information of the random access opportunity is in the second state, the configuration indication information of the random access opportunity can be used to indicate: enabling the configuration of the random access opportunity of the terminal device, or continuing to access the network, or not performing random access.

[0016] Through this design, the configuration indication information of the random access opportunity can be used to indicate whether a terminal device of a certain type accesses a network device or not. In this way, the random access of one type of terminal device can be restricted, while the random access of other types of terminal devices can be not restricted, so as to reduce the business impact on other types of terminal devices.

[0017] In a possible design, when the configuration indication information of the random access opportunity is in the third state, the configuration indication information of the random access opportunity can also be used to indicate: the first information also includes the configuration information of the random access opportunity of one or more characteristic parameters, and the configuration information of the random access opportunity of each characteristic parameter includes one or more of the following parameters: the time domain resources of the random access corresponding to the terminal device associated with the characteristic parameter, the frequency domain resources of the random access corresponding to the terminal device associated with the characteristic parameter, the period of the random access corresponding to the terminal device associated with the characteristic parameter, and the identification information of the characteristic parameter. In one method, the configuration indication information of the random access opportunity can indicate that the first information includes the configuration information of the random access opportunity of L characteristic parameters in the form of a bit map, so that the terminal device can determine the first method according to the supported characteristic parameters and the configuration indication information of the random access opportunity of the characteristic parameter, where L is an integer greater than 0.

[0018] Through this design, by configuring the random access opportunities of the terminal devices associated with each characteristic parameter, the terminal devices can initiate random access according to the random access opportunities of the characteristic parameters they support. In this case, if the random access opportunities of various characteristic parameters are configured differently, the terminal devices associated with the various characteristic parameters can also use different random access opportunities to access the network device, thereby helping to reduce the network load.

[0019] In one possible design, the characteristic parameters include one or more of the following parameters: service type, terminal type, system bandwidth, terminal bandwidth, power consumption level, power consumption requirement, beam identifier, subcarrier spacing, frequency range, frequency band, carrier, duplex type, peak rate, delay, mobility and modulation order. Through this design, terminal devices can be divided into multiple groups based on one or more characteristic dimensions, so that random access of terminal devices associated with various characteristic parameters can be restricted according to the grouping basis.

[0020] In a possible design, when the configuration indication information of the random access opportunity is in the third state, the first information also includes the quantity indication information of the characteristic parameters of the configuration random access opportunity, and the quantity indication information may include bits, and the bit states of these bits are used to indicate the value of L. Wherein, N is an integer not less than L, and N is used to indicate the total number of characteristic parameters. In this way, by using the configuration indication information of the random access opportunity and the number indication information of the characteristic parameters configured for the random access opportunity to jointly indicate the configuration information of the random access opportunity of L characteristic parameters, the terminal device can obtain the configuration information of the random access opportunity of the characteristic parameters supported by itself from the first information, so as to access the network device at the random access opportunity.

[0021] In a possible design, the second information is downlink control information or media access control information, and the second information includes N bits, and the N bits indicate the first mode of the terminal device associated with each characteristic parameter of the N characteristic parameters in the form of a bitmap. For example, the value of one bit in the N bits is used to indicate that the terminal device associated with the characteristic parameter corresponding to the bit is allowed to access the network device, or the value of one bit in the N bits is used to indicate that the terminal device associated with the characteristic parameter corresponding to the bit is not allowed to access the network device. In this way, the terminal device can determine the first mode according to the supported characteristic parameters and the second information. Through this design, each bit in the N bits can be used to indicate whether the terminal device associated with the corresponding characteristic parameter can access the network device. In this way, the terminal devices associated with the N characteristic parameters can access the network device according to the random access configuration of the characteristic parameters they support, respectively, without having the same random access configuration, so that the flexibility is better.

[0022] In one possible design, the second information is a random access response or uplink scheduling authorization information, and the second information indicates a first mode of a terminal device belonging to a certain type. In this way, if the terminal device belongs to this type, the first mode is determined according to the indication of the second information. In one method, the second information may include 1 bit, and the value of the bit is used to indicate: the terminal device receiving the second information is allowed to access the network device, or the terminal device receiving the second information is not allowed to access the network device. With this design, 1 reserved bit in the random access response can be used to indicate whether a terminal device of a certain type can access the network device. In this case, the indication can be performed with less occupied resources, which helps to reduce network overhead.

[0023] In one possible design, the second information indicates a first mode of a terminal device associated with one or more leading resources, including: determining X groups of leading resources, the X groups of leading resources may be determined according to a predefined rule, or may be determined by receiving a network device signaling and configuring the X groups of leading resources according to the information indicated by the signaling, and each group of leading resources includes at least one leading code index. In one case, there are X bits in the second information, and the X bits indicate the first mode of the terminal device associated with each group of leading resources in a bitmap manner, and X is an integer greater than 0 and not greater than 64, so that the terminal device determines the first mode of the terminal device according to the associated leading resources and the second information. In another case, the second information indicates the first mode of the terminal device associated with each Y group of leading resources, and the value of Y is a configured or predefined integer, so that the terminal device determines the first mode of the terminal device according to the Y groups of leading resources to which the associated leading resources belong and the second information. In this way, the network device can limit the access capability of the terminal device associated with the leading resource by limiting the random access to the leading resource.

[0024] In a possible design, the signaling and / or the second information also includes an association relationship between the leading resource and the characteristic parameter, and the terminal device determines the first mode of the terminal device according to the association relationship between the leading resource and the characteristic parameter and the supported characteristic parameters. In this way, the terminal device can select a leading code index from the leading resource corresponding to the supported characteristic parameter for random access. Since one leading code index can support one terminal device to access, this situation can also limit the number of terminal devices that can access the network device in each characteristic parameter, so that the number of terminal devices associated with various characteristic parameters can be more balanced.

[0025] In one possible design, if the terminal device determines to terminate access to the network device, or the terminal device determines not to perform random access, the terminal device starts a first timer, and after the duration of the first timer reaches a preset duration, the terminal device re-accesses the network device, or the terminal device re-accesses randomly. The preset duration of the first timer is determined according to a predefined rule, or is configured by the network device. With this design, the network device can adjust the duration of restricting the access of the terminal device. If the preset duration is set to a small value, the terminal device can re-access after exceeding the preset duration. This can also avoid the situation where the terminal device cannot access the network device for a long time, and avoid long-term blocking of the terminal device's services.

[0026] In one possible design, the first information is a main system information block, a system information block or dedicated radio resource control information, and the second information is system information, radio resource control information, a random access response, media access control information, downlink control information, uplink scheduling authorization information or Msg4. Through this design, the present application can configure the random access of the terminal device before the start of random access, and can also restrict the random access of the terminal device after the start of random access but before successful access, and can also configure the next random access after successful access, so the information transmission method in the present application can be applicable to each time period of random access.

[0027] In a possible design, the first information may also include configuration indication information of the random access mode. If the bit state of the configuration indication information of the random access mode is the fourth state, it indicates that the terminal device is not allowed to access the network device. Alternatively, if the bit state of the configuration indication information of the random access mode is the fifth state, it indicates that the random access mode of the terminal device is random access type 1. Alternatively, if the bit state of the configuration indication information of the random access mode is the sixth state, it indicates that the random access mode of the terminal device is random access type 2. Alternatively, if the bit state of the configuration indication information of the random access mode is the seventh state, it indicates that the random access mode of the terminal device is random access type 1 or random access type 2. Through this design, the network device can set the random access mode of the terminal device according to the urgency of the service of the terminal device. If the service of the terminal device is more urgent, it can be set to random access type 2. If the service of the terminal device is not urgent, it can be set to random access type 1. In this way, since random access type 2 is faster than random access type 1, terminal devices with more urgent services can access the network device in a timely and rapid manner.

[0028] In a third aspect, the present application provides an information transmission device, which may be a terminal device, and includes:

[0029] A transceiver unit, configured to receive first information sent by a network device, wherein the first information includes configuration indication information of a random access opportunity;

[0030] A processing unit is used to determine a first mode according to the configuration indication information of the random access opportunity.

[0031] The first method is one of: accessing a network device, not accessing a network device, performing random access, and not performing random access.

[0032] In one possible design, the transceiver unit is further used to receive first information sent by a network device; the processing unit is further used to determine the first method based on whether the first information contains configuration indication information of a random access opportunity.

[0033] In one possible design, the transceiver unit is further used to receive second information sent by the network device, and the second information is used to indicate a first mode of the terminal device associated with each characteristic parameter of one or more characteristic parameters; the processing unit is further used to determine the first mode based on the second information.

[0034] In one possible design, the transceiver unit is further used to receive second information sent by the network device, and the second information is used to indicate a first mode of a terminal device associated with one or more leading resources; the processing unit is further used to determine the first mode based on the second information.

[0035] In one possible design, the configuration indication information of the random access opportunity is used to indicate at least one of the following: disabling the configuration of random access opportunities for terminal devices, enabling the configuration of random access opportunities for terminal devices, terminating access to a network device, continuing access to a network device, not performing random access, performing random access, and the first information also includes configuration information of random access opportunities of one or more characteristic parameters.

[0036] In a possible design, the first information does not include configuration indication information of the random access opportunity. In this case, the processing unit is specifically used to: determine that the first mode is not to access the network device or not to perform random access.

[0037] In a possible design, the first information includes configuration indication information of the random access opportunity. In this case, the processing unit is specifically used to: determine that the first mode is to access a network device or to perform random access.

[0038] In one possible design, the configuration indication information of the random access opportunity indicates in a bitmap manner that the first information includes configuration information of the random access opportunity of one or more characteristic parameters. In this case, the processing unit is specifically used to determine the first mode according to the supported characteristic parameters and the configuration indication information of the random access opportunity.

[0039] In one possible design, the second information is downlink control information or media access control information, and the second information includes N bits, and the N bits indicate a first mode of a terminal device associated with each of the N characteristic parameters in a bitmap manner. In this case, the processing unit is specifically used to determine the first mode according to the supported characteristic parameters and the second information.

[0040] In one possible design, the second information is a random access response or uplink scheduling authorization information, and the second information indicates a first mode of the terminal device. In this case, the processing unit is specifically used to: determine the first mode according to the indication of the second information.

[0041] In one possible design, the second information includes X bits, and the X bits indicate a first mode of a terminal device associated with each group of leading resources in a bitmap manner. In this case, the processing unit is specifically used to: determine X groups of leading resources, and determine the first mode according to the associated leading resources and the second information. The X groups of leading resources are determined according to a predefined rule, or a signaling is received from a network device, and the signaling is used to configure the X groups of leading resources. X is an integer greater than 0 and not greater than 64.

[0042] In one possible design, the second information indicates a first mode of a terminal device associated with each Y group of leading resources. In this case, the processing unit is specifically used to: determine the first mode according to the Y group of leading resources to which the associated leading resources belong and the second information. The value of Y is a configured or predefined integer.

[0043] In a possible design, the X groups of leading resources are associated with characteristic parameters. In this case, the processing unit is specifically used to: determine the first mode according to the association relationship between the X groups of leading resources and characteristic parameters and the supported characteristic parameters.

[0044] In a possible design, the processing unit is further used to: determine not to access the network device or not to perform random access, and start a first timer. The duration of the first timer is determined according to a predefined rule or configured by the network device.

[0045] In one possible design, the first information is a main system information block, a system information block, or dedicated radio resource control information.

[0046] In one possible design, the second information is one or more of the following information: system information, wireless resource control information, random access response, media access control information, downlink control information, uplink scheduling authorization information, Msg4.

[0047] In one possible design, the characteristic parameters are one or more of the following parameters: service type, terminal type, system bandwidth, terminal bandwidth, power consumption level, power consumption requirement, beam identification, subcarrier spacing, frequency range, frequency band, carrier, duplex type, peak rate, delay, mobility, modulation order, etc.

[0048] In a fourth aspect, the present application provides an information transmission device, which may be a network device, and includes:

[0049] A transceiver unit, configured to send first information to a terminal device, wherein the first information includes configuration indication information of a random access opportunity, and the first information is used by the terminal device to determine a first mode according to the configuration indication information of the random access opportunity;

[0050] A processing unit, used to allow the terminal device to access when the first information or the second information indicates that the terminal device accesses the network device or performs random access.

[0051] The first method is one of accessing a network device, not accessing a network device, performing random access, and not performing random access.

[0052] In one possible design, the transceiver unit is also used to send first information to the terminal device, and the first information is used by the terminal device to determine the first mode according to whether the first information contains configuration indication information of the random access opportunity.

[0053] In one possible design, the transceiver unit is also used to send second information to the terminal device, where the second information is used to indicate a first mode of the terminal device associated with each characteristic parameter of one or more characteristic parameters, and the second information is used by the terminal device to determine the first mode.

[0054] In one possible design, the transceiver unit is also used to send second information to the terminal device, where the second information is used to indicate a first mode of the terminal device associated with one or more leading resources, and the second information is used by the terminal device to determine the first mode.

[0055] In one possible design, the configuration indication information of the random access opportunity is used to indicate at least one of the following: disabling the configuration of random access opportunities for terminal devices, enabling the configuration of random access opportunities for terminal devices, terminating access to a network device, continuing access to a network device, not performing random access, performing random access, and the first information also includes configuration information of random access opportunities of one or more characteristic parameters.

[0056] In one possible design, the first information does not include configuration indication information of the random access opportunity, and the first information is used to indicate that the first method is not to access the network device or not to perform random access.

[0057] In one possible design, the first information includes configuration indication information of the random access opportunity, and the first information is used to indicate that the first method is to access a network device or to perform random access.

[0058] In one possible design, the configuration indication information of the random access opportunity indicates, in a bitmap manner, that the first information includes configuration information of the random access opportunity of one or more characteristic parameters. The configuration indication information of the random access opportunity is used by the terminal device to determine the first mode according to the supported characteristic parameters and the configuration indication information of the random access opportunity.

[0059] In one possible design, the second information is downlink control information or media access control information, and the second information includes N bits, and the N bits indicate a first mode of a terminal device associated with each of N characteristic parameters in a bit map manner, and the second information is used by the terminal device to determine the first mode based on the supported characteristic parameters and the second information.

[0060] In one possible design, the second information is a random access response or uplink scheduling authorization information, the second information indicates a first mode of the terminal device, and the second information is used by the terminal device to determine the first mode according to the indication of the second information.

[0061] In one possible design, the transceiver unit is further used to: send signaling to the terminal device, the signaling is used to configure X groups of leading resources, the second information includes X bits, the X bits indicate the first mode of the terminal device associated with each group of leading resources in a bitmap manner, and the second information is used by the terminal device to determine the first mode according to the associated leading resources and the second information. Wherein, X is an integer greater than 0 and not greater than 64.

[0062] In one possible design, the transceiver unit is further used for: the second information indicates a first mode of a terminal device associated with each Y group of leading resources, and the second information is used by the terminal device to determine the first mode according to the Y group of leading resources to which the associated leading resources belong and the second information. The value of Y is a configured or predefined integer.

[0063] In one possible design, the X groups of leading resources are associated with characteristic parameters. The association relationship between the X groups of leading resources and characteristic parameters is used by the terminal device to determine the first mode according to the association relationship between the X groups of leading resources and characteristic parameters and the supported characteristic parameters.

[0064] In a possible design, the processing unit is further used to: determine not to access the network device or not to perform random access, and start a first timer. The duration of the first timer is determined according to a predefined rule or configured by the network device.

[0065] In one possible design, the first information is a main system information block, a system information block, or dedicated radio resource control information.

[0066] In one possible design, the second information is one or more of the following information: system information, wireless resource control information, random access response, media access control information, downlink control information, uplink scheduling authorization information, Msg4.

[0067] In one possible design, the characteristic parameters are one or more of the following parameters: service type, terminal type, system bandwidth, terminal bandwidth, power consumption level, power consumption requirement, beam identification, subcarrier spacing, frequency range, frequency band, carrier, duplex type, peak rate, delay, mobility, modulation order, etc.

[0068] In a fifth aspect, the present application provides an information transmission device, comprising a processor and a communication interface, wherein the communication interface is used to receive signals from other communication devices other than the information transmission device described in the third aspect and transmit them to the processor or send signals from the processor to other communication devices other than the information transmission device described in the third aspect, and the processor is used to implement any method as described in the first aspect through logic circuits or execution code instructions.

[0069] In a sixth aspect, the present application provides an information transmission device, comprising a processor and a communication interface, wherein the communication interface is used to receive signals from other communication devices other than the information transmission device described in the fourth aspect and transmit them to the processor or send signals from the processor to other communication devices other than the information transmission device described in the fourth aspect, and the processor is used to implement a method as described in any one of the second aspects through a logic circuit or by executing code instructions.

[0070] In a seventh aspect, the present application provides an information transmission device, comprising a processor, wherein the processor is connected to a memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the device performs the method described in any one of the first aspects above.

[0071] In an eighth aspect, the present application provides an information transmission device, comprising a processor, wherein the processor is connected to a memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the device performs a method as described in any one of the second aspects above.

[0072] In a ninth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed, the method described in any one of the first aspects above is implemented.

[0073] In a tenth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed, the method described in any one of the second aspects above is implemented.

[0074] In an eleventh aspect, the present application provides a chip comprising a processor and an interface; the processor is used to read instructions to execute the information transmission method as described in any one of the above-mentioned first aspects.

[0075] In a twelfth aspect, the present application provides a chip comprising a processor and an interface; the processor is used to read instructions to execute the method of information transmission as described in any one of the second aspects above.

[0076] In the thirteenth aspect, an embodiment of the present application provides a computer program product, which is used to store a computer program. When the computer program is run on a computer, the computer executes any method as described in the first aspect above, or executes any method as described in the second aspect above.

[0077] In a fourteenth aspect, the present application provides a system comprising a terminal device and a network device, wherein the terminal device can be used to execute the above-mentioned first aspect or any one of the methods in the first aspect, and the network device can be used to execute the above-mentioned second aspect or any one of the methods in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] Figure 1 A schematic diagram of a possible system architecture applicable to the embodiments of the present application;

[0079] Figure 2 A schematic diagram of an access process of random access type 1 is exemplarily shown;

[0080] Figure 3 An exemplary access process diagram of random access type 2 is shown;

[0081] Figure 4 A schematic diagram exemplarily shows a flow chart of a method for information transmission provided in an embodiment of the present application;

[0082] Figure 5 A flowchart schematically illustrates another information transmission method provided by an embodiment of the present application;

[0083] Figure 6 The configuration information of random access opportunities of two characteristic parameters is shown exemplarily;

[0084] Figure 7 The configuration information of random access opportunities of two characteristic parameters is shown exemplarily;

[0085] Figure 8 A flowchart of another information transmission method provided by an embodiment of the present application is exemplarily shown;

[0086] Fig. 9 A schematic diagram exemplarily shows a flow chart of a method for information transmission provided in an embodiment of the present application;

[0087] Fig.10 A flowchart of another information transmission method provided by an embodiment of the present application is exemplarily shown;

[0088] Fig.11 A flowchart of another information transmission method provided by an embodiment of the present application is exemplarily shown;

[0089] Fig.12 A flowchart of another information transmission method provided by an embodiment of the present application is exemplarily shown;

[0090] Fig.13 A flowchart of another information transmission method provided by an embodiment of the present application is exemplarily shown;

[0091] Fig.14 A schematic diagram showing the structure of an information transmission device provided in an embodiment of the present application is exemplified;

[0092] Fig.15 A schematic diagram exemplarily shows the structure of another information transmission device provided in an embodiment of the present application;

[0093] Fig.16 A schematic diagram exemplarily shows another information transmission device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0094] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0095] The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0096] Furthermore, unless otherwise specified, ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects. For example, the first information and the second information are only used to distinguish different information, and do not indicate the difference in priority or importance of the two information.

[0097] Figure 1 FIG. 1 is a schematic diagram of a possible system architecture applicable to the embodiment of the present application. Figure 1The system architecture shown includes network devices and terminal devices. It should be understood that the embodiments of the present application do not limit the number of network devices and the number of terminal devices in the system architecture, and the system architecture to which the embodiments of the present application are applicable may include other devices in addition to network devices and terminal devices, such as core network devices, wireless relay devices, and wireless backhaul devices, etc., which are not limited by the embodiments of the present application. In addition, the network devices in the embodiments of the present application may integrate all functions into an independent physical device, or distribute the functions on multiple independent physical devices, which are not limited by the embodiments of the present application. In addition, the terminal devices in the embodiments of the present application may be connected to the network devices wirelessly.

[0098] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: 5G (or new radio (NR)) communication system, 6G communication system, Long Term Evolution (LTE) system, Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) general packet radio service (GPRS) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, etc., and of course, it can also be other unlicensed frequency band communication systems without limitation.

[0099] The following is an introduction to the terms and related technologies involved in the embodiments of the present application.

[0100] 1. Terminal equipment.

[0101] The terminal device in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, for example, a handheld device with a wireless connection function, or a processing device connected to a wireless modem. The terminal device can communicate with the core network via a radio access network (RAN) and exchange voice and / or data with the RAN. The terminal device may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (D2D) terminal equipment, vehicle-to-everything (V2X) terminal equipment, machine-to-machine / machine-type communication (M2M / MTC) terminal equipment, Internet of Things (IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, or user equipment, etc. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal devices, portable, pocket-sized, handheld, and computer-built-in mobile devices, etc. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA), and other devices. It also includes limited devices, such as devices with low power consumption, or devices with limited storage capacity, or devices with limited computing power, etc. For example, it includes information sensing devices such as barcodes, radio frequency identification (RFID), sensors, global positioning systems (GPS), laser scanners, etc.

[0102] 2. Characteristic parameters and terminal devices associated with the characteristic parameters.

[0103] In the embodiment of the present application, each characteristic parameter may include at least one parameter and a parameter value range corresponding to at least one parameter. For a characteristic parameter, if the parameter value of each parameter included in the characteristic parameter of the terminal device satisfies the parameter value range corresponding to each parameter in the characteristic parameter, the terminal device is associated with the characteristic parameter, and the characteristic parameter is called a characteristic parameter supported by the terminal device.

[0104] In the embodiment of the present application, each characteristic parameter may include one or more of the following parameters:

[0105] Terminal type, service type, system bandwidth, terminal bandwidth, power consumption level, power consumption requirement, beam identification, subcarrier spacing, frequency range, frequency band, carrier, duplex type, peak rate, delay, mobility, modulation order, etc.

[0106] The following is an introduction to each parameter and the corresponding parameter value range.

[0107] Terminal types, for example, may include reduced capability (REDCAP) terminal devices, traditional terminal devices, V2X terminal devices, etc. Among them, REDCAP terminal devices are also called restricted devices. Since REDCAP terminal devices have lower complexity and smaller bandwidth occupancy capacity, REDCAP terminal devices have better competitiveness compared to ordinary terminal devices. REDCAP terminal devices can be mainly used in mMTC scenarios. In order to better serve people's lives, a large number of REDCAP terminal devices will be set up in the mMTC scenario. In this case, it is very likely that a large number of REDCAP terminal devices will choose the same random access opportunity to access the cell. However, the resources of the cell are limited. If the random access of REDCAP terminal devices is not restricted, the cell may be overloaded within a certain period of time. By way of example, the terminal devices in this application mainly refer to REDCAP terminal devices, and this application is used to restrict the random access of REDCAP terminal devices.

[0108] The service type may refer to the service type of the REDCAP terminal device in the mMTC scenario, for example, it may include fixed service types such as industrial wireless sensor network (IWSN) type, camera type, wearable type and video surveillance type, and of course, it may also include unlimited service types (Not limited). Among them, the video surveillance type may include, for example, monitors for monitoring traffic conditions, cameras for monitoring people entering and leaving the community, and alarms for monitoring criminal behavior. Industrial wireless sensor types may include, for example, electromagnetic sensors, temperature sensors, humidity sensors, noise sensors, light intensity sensors, pressure sensors, and operation sensors. Wearable device types may refer to wearable devices with relatively single functions, for example, they may include bracelets that can only monitor heartbeats, bracelets that can only count exercise steps, and watches that can only time, etc.

[0109] The system bandwidth may refer to the bandwidth frequency band supported by the terminal device. For example, if the bandwidth frequency band supported by the terminal device is not greater than 100 megahertz (MHz), the system bandwidth of the terminal device is considered to belong to the low frequency band. If the bandwidth frequency band supported by the terminal device is greater than 100 MHz and less than 400 MHz, the system bandwidth of the terminal device is considered to belong to the high frequency band.

[0110] The terminal bandwidth may refer to the bandwidth that a terminal device can occupy for transmitting data. According to the maximum terminal bandwidth (MAX BW), the terminal devices may be divided into terminal devices with MAX BW equal to 5 megahertz (MHz), terminal devices with MAX BW equal to 10 MHz, and terminal devices with MAX BW equal to 20 MHz.

[0111] The power consumption level may refer to the energy level consumed by the terminal device per unit time. For example, it may be divided into terminal devices with a high power consumption level (unit power consumption greater than 400W), terminal devices with a medium power consumption level (unit power consumption greater than 200W and not greater than 400W), and terminal devices with a low power consumption level (unit power consumption not greater than 10W).

[0112] Power consumption requirement may refer to the degree of power consumption required by a terminal device to perform a service. For example, terminal devices may be divided into terminal devices with high power consumption requirements and terminal devices with low power consumption requirements according to power consumption requirements. The unit power consumption required for a terminal device with high power consumption requirements to perform a service shall not be less than 200W, and the unit power consumption required for a terminal device with low power consumption requirements to perform a service shall not be higher than 200W.

[0113] The beam identifier indicates beams of different shapes or directions received by the terminal device.

[0114] A carrier wave can refer to a radio wave of a specific frequency, which is an electromagnetic wave modulated in frequency, amplitude or phase to transmit speech, audio, images or other signals. Different terminal devices can support different carrier waves, and terminal devices can be divided into terminal devices of different carrier types according to the carrier wave.

[0115] Subcarrier spacing can refer to the frequency spacing between two adjacent subcarriers. 5G NR can support different types of subcarrier spacing. For example, a subcarrier spacing can be a value between 15kHz and 240kHz. When the subcarrier spacing is 15KHz, the symbol length is 1 / 15us, and there are 14 symbols and 14 cyclic prefixes in a time slot, so the length of the time slot can be 1ms. When the subcarrier spacing is 30kHz, the symbol length is 1 / 30us, and each time slot is 0.5ms. When the subcarrier spacing is 120khz, the symbol length is 1 / 120us, and each time slot is 0.125ms.

[0116] Frequency range (FR) or frequency band range may refer to the frequency range that a terminal device can receive. For example, in 5G NR, the frequency range may be divided into FR1 and FR2. The frequency range of FR1 is 450 MHz to 6 GHz, and the frequency range of FR2 is 24 GHz to 52 GHz.

[0117] The duplex type may refer to whether the terminal device supports the ability to simultaneously transmit and receive signals in the case of frequency division duplex (FDD), which may mainly include two capabilities: half-duplex FDD and full-duplex FDD. Among them, half-duplex FDD means that the terminal device does not support simultaneous transmission and reception of signals, that is, the terminal supports receiving and sending signals in time division, and full-duplex FDD means that the terminal device supports simultaneous transmission and reception of signals.

[0118] The peak rate may refer to the maximum transmission rate that a terminal device can achieve. Under the same network conditions, the peak rate of a terminal device with good software configuration and / or hardware configuration is higher than the peak rate of a terminal device with poor software configuration and / or hardware configuration. According to the peak rate, terminal devices can be divided into terminal devices with a peak rate greater than 100M / s, terminal devices with a peak rate not greater than 100M / s and greater than 150M / s, and terminal devices with a peak rate greater than 150M / s and not greater than 300M / s.

[0119] The delay may refer to the data transmission delay of the terminal device. Under the same network state, the delay of the terminal device with good software configuration and / or hardware configuration is shorter than the delay of the terminal device with poor software configuration and / or hardware configuration. According to experiments, the terminal devices can be divided into terminal devices with a delay greater than the first duration, terminal devices with a delay not greater than the first duration and greater than the second duration, and terminal devices with a delay not greater than the second duration and greater than the third duration. Among them, the first duration < the second duration < the third duration.

[0120] Mobility may refer to the mobility of a terminal device. According to mobility, the terminal device may be divided into a terminal device with a fixed position, a terminal device with a position movement frequency less than a first frequency, and a terminal device with a position movement frequency not less than the first frequency.

[0121] The modulation order may refer to the maximum modulation order of the terminal device, that is, the order corresponding to the maximum quadrature amplitude modulation (MAX QAM). According to the modulation order, the terminal devices can be divided into terminal devices with a maximum modulation order not greater than 16 quadrature amplitude modulation (QAM), terminal devices with a maximum modulation order greater than 16QAM and not greater than 64QAM, and terminal devices with a maximum modulation order not greater than 64QAM and greater than 256QAM.

[0122] The above content is only an example of several possible parameters and parameter value ranges. In other optional embodiments, the characteristic parameters may also include other parameter value ranges corresponding to the above parameters, or may also include other parameters, such as the number of antennas, processing time, reliability requirements (for example, the maximum block error rate or maximum bit error rate required by the terminal device), whether to support supplementary uplink (SUL), whether to support carrier aggregation (CA), and CA capabilities of terminal devices supporting CA, etc. Among them, CA capability may refer to the maximum number of carriers that the terminal device can support when the terminal supports CA.

[0123] In an optional implementation, each characteristic parameter may include only one parameter among the above parameters and the parameter value range corresponding to the parameter. For example, Table 1 exemplarily shows the association relationship table between the characteristic parameter and the terminal device when the characteristic parameter includes only the service type parameter:

[0124] Characteristic parameters Business Type 1 Industrial Wireless Sensor Network Type IWSN 2 Video surveillance type camera 3 Wearable device type wearable

[0125] Table 1

[0126] As shown in Table 1, when the characteristic parameter only includes the service type parameter:

[0127] Characteristic parameter 1 is used to associate terminal devices whose service type is industrial wireless sensor network type;

[0128] Characteristic parameter 2 is used to associate terminal devices whose service type is video surveillance type;

[0129] Characteristic parameter 3 is used to associate terminal devices whose service type is wearable device type.

[0130] In another optional implementation, each characteristic parameter may include at least two parameters of the above parameters and parameter value ranges corresponding to the at least two parameters. For example, Table 2 exemplarily shows an association relationship table between characteristic parameters and terminal devices when the characteristic parameters include three parameters: terminal bandwidth, mobility, and service type:

[0131] Characteristic parameters Terminal bandwidth Mobility Business Type 1 MAX BW=5MHz fixed IWSN 2 MAX BW=10MHz fixed IWSN 3 MAX BW=20MHz fixed camera 4 MAX BW=20MHz The moving frequency is not less than the first frequency camera 5 MAX BW=20MHz The moving frequency is not less than the first frequency wearable

[0132] Table 2

[0133] As shown in Table 2, when the characteristic parameters include terminal bandwidth, mobility and service type:

[0134] Characteristic parameter 1 is used to associate: fixed equipment with MAX BW equal to 5MHz in IWSN service type;

[0135] Characteristic parameter 2 is used to associate: fixed equipment with MAX BW equal to 10MHz in the IWSN service type;

[0136] Feature parameter 3 is used to associate: fixed devices with MAX BW equal to 20MHz in the camera service type;

[0137] Characteristic parameter 4 is used to associate: a removable device with a MAX BW of 20 MHz in the camera service type and a mobile frequency not less than the first frequency;

[0138] The characteristic parameter 5 is used to associate: a wearable mobile device with a MAX BW equal to 20 MHz in the wearable service type, and a mobile frequency not less than the first frequency.

[0139] In the embodiment of the present application, when the characteristic parameter includes multiple parameters and parameter value ranges corresponding to the multiple parameters, it is not necessary to group the terminal devices of the same parameter value range corresponding to the same parameter into one group, but multiple parameters and parameter value ranges corresponding to the multiple parameters can be used for random combination. For example, in Table 1, only the terminal devices of the service type belonging to IWSN can be grouped into one group, but in Table 2, the terminal devices of the service type belonging to IWSN can also be grouped according to the maximum terminal bandwidth, and divided into terminal devices of MAX BW equal to 5MHz and terminal devices of MAX BW equal to 10MHz. In this way, the terminal devices can be grouped at a finer granularity, so as to facilitate the subsequent configuration of random access opportunities of each group of terminal devices by configuring random access opportunities corresponding to various characteristic parameters.

[0140] In the embodiment of the present application, at least one parameter included in each characteristic parameter and the parameter value range corresponding to at least one parameter can be pre-configured, for example, configured inside the terminal device when the terminal device leaves the factory, or sent to the terminal device by the network device. In the latter manner, even if the characteristic parameter associated with the terminal device has been configured before, the network device can update the terminal device associated with the characteristic parameter at any time according to actual needs, thereby improving the real-time performance of random access.

[0141] 3. Network equipment.

[0142] The network devices in the embodiments of the present application may include multiple types, such as access network (AN) devices, such as base stations (e.g., access points), which may refer to devices in the access network that communicate with wireless terminal devices through one or more cells at the air interface. The base station can be used to convert received air frames to and from Internet Protocol (IP) packets, and serve as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network. For example, a road test unit (RSB) is included, which may be a fixed infrastructure entity that supports V2X applications and can exchange messages with other entities that support V2X applications. The network device can also coordinate the attribute management of the air interface. For example, the network device may include an evolved base station (NodeB or eNB or e-NodeB, evolutionary Node B) in an LTE system or long term evolution-advanced (LTE-A), or may also include the fifth generation mobile communication technology (the 5 thThe next generation node B (gNB) in the new radio (NR) system of 5G generation) may also include a centralized unit (CU) and a distributed unit (DU) in a cloud access network (CloudRAN) system, but the embodiments of the present application are not limited.

[0143] 4. The terminal device is connected to the network device.

[0144] In the embodiment of the present application, the terminal device accessing the network device refers to the cell covered by the terminal device accessing the network device, for example, the cell covered by a base station. A cell is an area that provides wireless communication services to users and is the basic component unit of a wireless network. For example, NR is a cell resource that adds NR through the MML commands ADD NRCELL and ADD NRDUCELL.

[0145] 5. The way the terminal device accesses the network device: random access type 1 or random access type 2.

[0146] Random access type 1 refers to the access of a terminal device to a network device after a four-step handshake between the terminal device and the network device, which is a competitive access method. Random access type 2 refers to the access of a terminal device to a network device after a two-step handshake between the terminal device and the network device, which is a non-competitive access method. The existing processes of random access type 1 and random access type 2 are introduced below.

[0147] Figure 2 A schematic diagram of an access process of random access type 1 is shown as an example. Figure 2 As shown, the process includes:

[0148] The first handshake (msg1) is used by the terminal device to send a random access request to the network device, including the following steps:

[0149] Step 201, the terminal device obtains the synchronization signal block (Synchronization signals block, SSB) of the cell to be accessed from the physical broadcast channel (Physical Broadcast Channel, PBCH) of the cell to be accessed to establish downlink synchronization with the cell to be accessed. Among them, the SSB of the cell to be accessed is periodically sent on the PBCH of the cell to be accessed by the network equipment that manages the cell to be accessed. The SSB includes the Master Information Block (MIB), which carries the index of this random access opportunity, the time domain resources and frequency domain resources of the Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH) carrying the first downlink control information (Downlink Control Information, DCI), and can also carry the modulation and coding method of the first DCI. Among them, the first DCI is used to schedule the system information block (System Information Block, SIB) of the cell to be accessed.

[0150] Step 202, the terminal device obtains the first DCI from the PDCCH according to the time domain resources and frequency domain resources of the PDCCH obtained by parsing the MIB, and the modulation and coding mode of the first DCI. The first DCI carries the time domain resources and frequency domain resources of the physical downlink shared channel (PDSCH) carrying the SIB of the cell to be accessed, and may also carry the modulation and coding mode of the SIB of the cell to be accessed.

[0151] Step 203, the terminal device obtains the SIB of the cell to be accessed from the PDSCH according to the time domain resources and frequency domain resources of the PDSCH obtained by parsing the first DCI, and the modulation and coding method of the SIB. Among them, the SIB includes system information that the terminal device needs to know before accessing the cell to be accessed, such as the preamble code index list, the random access opportunity list and the transmission power. The preamble code index list includes up to 64 preamble code indexes. The random access opportunity list includes the correspondence between each random access opportunity index and each random access opportunity.

[0152] Step 204, the terminal device randomly selects a preamble code index from the preamble code index list as the preamble code index corresponding to this random access, and selects the random access opportunity corresponding to the opportunity index from the random access opportunity list as the random access opportunity corresponding to this random access according to the opportunity index of this random access in the MIB.

[0153] Step 205: The terminal device sends a random access request to the network device at a random access opportunity corresponding to this random access. The random access request includes a preamble code index corresponding to this random access.

[0154] In the embodiment of the present application, the terminal devices that obtain the same opportunity index can correspond to the same random access opportunity, and thus send a random access request to the network device at the same random access opportunity. Moreover, different terminal devices may also randomly select the same preamble index, so that the random access requests sent by these terminal devices can carry the same preamble index, and one preamble index can only support one terminal device to access the cell to be accessed.

[0155] The second handshake (msg2) is used by the network device to send a random access response to the terminal device, including the following steps:

[0156] In step 211, the network device uses the Radio Network Temporary Identity (RA-RNTI) of each received random access request to scramble the second DCI, and sends the scrambled second DCI on the PDCCH channel of the cell to be accessed.

[0157] Step 212: The terminal device obtains and descrambles the PDCCH channel of the cell to be accessed according to the RA-RNTI of the random access request sent, and obtains the second DCI. The second DCI carries the time domain resources and frequency domain resources of the PDSCH channel carrying the Medium Access Control Sub Layer Protocol Data Unit (MAC PDU), and may also carry the modulation and coding mode of the MAC PDU.

[0158] Step 213, the terminal device obtains the MAC PDU from the PDSCH channel according to the time domain resources and frequency domain resources of the PDSCH channel carrying the MAC PDU, and the modulation and coding method of the MAC PDU. Among them, the MAC PDU can be composed of multiple media access control layer protocol data unit subheaders MAC subPDU, and the number of bits contained in a MAC subPDU can be a multiple of 8, such as 8, 16, 24, ... 8*n, where n is a positive integer. A MAC subPDU can include one of the following:

[0159] Backoff Indicator (BI): contains 2 bits, which are used to indicate the time range that a terminal device that fails random access needs to wait to resend a random access request. Random access failure means that the terminal device does not receive a corresponding random access response, or the terminal device determines that contention resolution has failed. In this case, the terminal device can re-initiate a random access request within the time range indicated by the BI, for example, randomly select a time between 0 and the time indicated by the BI, and re-initiate a random access request after the time;

[0160] Random Access Preamble Identifier (RAPID): refers to the identifier of the preamble index carried in the random access request. The case where only RAPID is carried in the MAC subPDU is for non-random access scenarios, and this application will not introduce it in detail.

[0161] RAPID and Random Access Response (RAR): RAR refers to the random access response corresponding to the random access request whose preamble index is RAPID. Terminal devices that select the same preamble index can receive the same random access response. RAR can carry timing correction information, uplink scheduling authorization information UR-grand and cell network temporary identifier (Cell-Radio Network Temporary Identifier, TC-RNTI), and can also reserve 1 bit for reservation. Among them, UR-grand is used to indicate the uplink scheduling resources of the terminal device, for example, including the time domain resources and frequency domain resources when the terminal device performs uplink scheduling, and UR-grand also reserves 1 bit for reservation, which is also called the CSI request field.

[0162] For ease of understanding, the MAC PDU is further explained: Assuming that the network device receives 50 random access requests, it is determined that access is allowed for 20 of the random access requests (assuming that the preamble code indexes carried by the 20 random access requests are different), and the other 30 random access requests are not allowed to access. The MAC PDU may include the following content:

[0163] One MAC subPDU is used to carry a BI, which is used to indicate the time range for the other 30 terminal devices to resend random access requests;

[0164] 20 MAC subPDUs are used to carry RAPID and RAR, and the RAR in each MAC subPDU is used to indicate the resource information for uplink scheduling of the terminal device indicated by RAPID in the MACsubPDU. For example, in the case where two or more random access requests carry the same preamble index among the 20 random access requests, the number of MAC subPDUs used to carry RAR in the MAC PDU may be less than 20.

[0165] Assume that the MAC subPDU carrying the BI is called the first MAC subPDU, and the MACsubPDU carrying the RAPID and RAR is called the second MAC subPDU. Exemplarily, after the terminal device obtains the MAC PDU, it can determine whether there is a second MAC subPDU among the 20 second MAC subPDUs that contains the RAR corresponding to the RAPID based on the RAPID of the random access request carried in the random access request sent by the terminal device. If so, the terminal device can obtain the RAR from the second MAC subPDU to continue accessing the cell to be accessed. If none of the 20 second MAC subPDUs contains the RAR corresponding to the RAPID, the terminal device can obtain the BI from the first MAC subPDU and re-initiate the random access request within the time range indicated by the BI.

[0166] The third handshake (msg3) is used by the terminal device to send the contention resolution identifier to the network device, and includes the following steps:

[0167] Step 221, the terminal device obtains UR-grant from the RAR, uses the TC-RNTI in the UR-grant to scramble the contention resolution identifier, and sends the scrambled contention resolution identifier to the network device. The contention resolution identifier may be a unique identifier of the terminal device.

[0168] The fourth handshake (msg4) is used by the network device to send the contention resolution mechanism of the terminal device allowed to access to the terminal device, and includes the following steps:

[0169] In step 231, the network device may use the TC-RNTI in each received contention resolution identifier to scramble the third DCI and send the scrambled third DCI to the PDCCH channel. The third DIC is used to indicate the time domain resources and frequency domain resources of the PDSCH channel for scheduling the contention resolution mechanism.

[0170] In step 232, the network device may send a contention resolution mechanism on the PDSCH channel, where the contention resolution mechanism includes a unique identifier of the terminal device allowed to access and a cell network identifier (Cell-Network Temporary Identifier, C-RNTI) corresponding to the terminal device.

[0171] In the embodiment of the present application, terminal devices that select the same preamble code index can receive the same TC-RNTI, so the contention resolution identifiers sent by these terminal devices will also be encrypted using the same TC-RNTI. However, a preamble code index only allows one terminal device to access, so after the network device receives the contention resolution identifiers sent by these terminal devices, since the TC-RNTI is consistent, the network device can select a terminal device as the terminal device allowed to access by the preamble code index, such as the terminal device with the best signal strength.

[0172] Step 233: The terminal device obtains a contention resolution mechanism from the PDSCH channel according to the third DCI. If the contention resolution mechanism includes the unique identifier of the terminal device, the terminal device determines that the cell is successfully accessed. If the contention resolution mechanism does not include the unique identifier of the terminal device, the terminal device determines that random access fails.

[0173] Step 241, after successfully accessing the cell, the terminal device can communicate with the network device through the C-RNTI corresponding to the unique identifier of the terminal device in the contention resolution mechanism, for example, receive high-layer signaling sent by the network device.

[0174] In random access type 1, when the terminal device does not perform the fourth step of handshake, the terminal device does not go to the downlink shared channel to obtain the contention resolution mechanism, so the final confirmation step of the random access of the terminal device is not completed. In the case where the terminal device performs the fourth step of handshake, the terminal device goes to the downlink shared channel to obtain the contention resolution mechanism, and the contention resolution mechanism contains the unique identifier of the terminal device and the corresponding cell network identifier, then the terminal device successfully accesses the network. In this case, the random access of the terminal device may no longer be changed. Based on this, the information transmission method in the present application mainly configures the random access of the terminal device in the first step of handshake, the second step of handshake or the third step of handshake, so that the terminal device can access the network device or not access the network device using a random access configuration different from other terminal devices. Of course, the random access of the terminal device can also be configured in the fourth step of handshake, but this configuration is used to indicate the next random access of the terminal device.

[0175] Figure 3 A schematic diagram of an access process of random access type 2 is shown as an example. Figure 3 As shown, the process includes:

[0176] The first step of handshake is used by the terminal device to send a random access request to the network device, including the following steps:

[0177] Step 301: The network device assigns a specific preamble code index to the terminal device through downlink dedicated signaling. The specific preamble code index does not conflict with the preamble code index of other terminal devices. In this way, the terminal device and other terminal devices no longer compete for access resources with the same preamble code index.

[0178] Step 302: The terminal device sends a random access request to the network device at a random access opportunity. The random access request includes a specific preamble code index and a unique identifier of the terminal device.

[0179] In the embodiment of the present application, the random access opportunity in random access type 2 may be specified by a network device, or may be determined in the manner of random access type 1, without limitation.

[0180] The second handshake is used by the network device to send the random access result to the terminal device, and includes the following steps:

[0181] Step 311, when the network device allows the terminal device to access, the network device carries the unique identifier of the terminal device and the C-RNTI corresponding to the terminal device in the random access result and sends it to the PDSCH channel. Of course, the random access result can also be scheduled by the downlink control information on the PDCCH channel. When the network device does not allow the terminal device to access, it may not respond to the terminal device, or it may carry the unique identifier of the terminal device and the information of random access failure in the random access result and send it to the PDSCH channel.

[0182] Step 312: The terminal device obtains a random access result from the PDSCH channel. If the random access result includes the C-RNTI corresponding to the unique identifier of the terminal device, the terminal device determines that it has successfully accessed the cell to be accessed, and can subsequently communicate with the network device through the C-RNTI. If the random access result does not include the unique identifier of the terminal device, or includes information about the failure of random access, the terminal device determines that the random access has failed.

[0183] In random access type 2, the terminal device can access the network device by sending uplink shared data once and receiving downlink shared data once, while in random access type 1, the terminal device needs to send uplink shared data at least twice and receive downlink shared data twice to access the network device. Therefore, the access speed of random access type 2 is faster than that of random access type 1. However, each operation of the terminal device in random access type 1 needs to be confirmed by the network device. Therefore, compared with random access type 2, the access process of the terminal device in random access type 1 can be better managed and controlled by the network device, which may be more in line with the requirements of the standard protocol.

[0184] The following embodiments of the present application describe how to configure random access of a terminal device based on random access type 1.

[0185] In the following description, a network device may be Figure 1 The terminal device may be a network device in the embodiment of the present invention, or a device capable of supporting information transmission of the network device to implement the functions required by the method, and of course, other information transmission devices, such as a chip or a chip system. Figure 1 The terminal device in the method, or a device for information transmission that can support the terminal device to implement the functions required by the method, of course, it can also be other information transmission devices, such as a chip or a chip system.

[0186] Before describing the specific implementation method, the possible situations included in the first method are introduced:

[0187] “The first mode is for the terminal device to access the network device” means that: when the terminal device has initiated a random access request, the first mode instructs the terminal device to continue random access;

[0188] “The first mode is that the terminal device does not access the network device” means that: when the terminal device has initiated a random access request, the first mode instructs the terminal device to terminate the random access;

[0189] “The first method is for the terminal device to perform random access” means: when the terminal device does not initiate a random access request, the first method instructs the terminal device to initiate random access;

[0190] “The first method is that the terminal device does not perform random access” means that when the terminal device does not initiate a random access request, the first method instructs the terminal device not to initiate random access.

[0191] For the purpose of unified description, the following embodiments of the present application refer to “the first way for the terminal device to access the network device” as “the first way for the terminal device to continue random access”, “the first way for the terminal device not to access the network device” as “the first way for the terminal device to terminate random access”, “the first way for the terminal device to perform random access” as “the first way for the terminal device to initiate random access”, and “the first way for the terminal device not to perform random access” as “the first way for the terminal device not to initiate random access”. That is, “the first way for the terminal device to continue random access” mentioned below can be replaced by “the first way for the terminal device to access the network device”, “the first way for the terminal device to terminate random access” mentioned below can be replaced by “the first way for the terminal device not to access the network device”, “the first way for the terminal device to initiate random access” mentioned below can be replaced by “the first way for the terminal device to perform random access”, and “the first way for the terminal device not to initiate random access” mentioned below can be replaced by “the first way for the terminal device not to perform random access”.

[0192] Furthermore, in the cases of "the first mode instructs the terminal device to continue random access" and "the first mode instructs the terminal device to start random access", the first mode actually allows the terminal device to access the network device, so that the terminal device can perform operations of accessing the network device, such as starting random access or continuing random access. In the cases of "the first mode instructs the terminal device to terminate random access" and "the first mode instructs the terminal device not to start random access", the first mode actually does not allow the terminal device to access the network device, so that the terminal device does not perform operations of accessing the network device, such as not starting random access or not continuing random access.

[0193] Embodiment 1

[0194] Figure 4 The flowchart of a method for information transmission provided by an embodiment of the present application is exemplarily shown. The method can be executed by a terminal device and a network device. The terminal device is used to access a cell covered by the network device. Figure 4 As shown, the method includes:

[0195] Step 401: A network device sends first information or second information to a terminal device.

[0196] In the embodiment of the present application, the first information or the second information may be used to indicate:

[0197] Whether to allow the terminal device to access the network device; or,

[0198] enabling random access opportunities corresponding to terminal devices associated with one or more characteristic parameters among the N characteristic parameters; or,

[0199] Whether to allow the terminal device associated with each of the N characteristic parameters to access the network device; or,

[0200] enabling random access opportunities corresponding to terminal devices associated with one or more groups of preamble resources in the X groups of preamble resources; or,

[0201] Whether to allow the terminal device associated with each group of leading resources in the X groups of leading resources to access the network device; or,

[0202] The association relationship between N characteristic parameters and X groups of leading resources.

[0203] Among them, "enabling a certain configuration" in the above content means enabling the terminal device to access the network device according to a certain configuration. For example, "enabling random access opportunities corresponding to terminal devices associated with one or more characteristic parameters" means: enabling the terminal device to access the network device in a manner of grouping characteristic parameters. For example, three characteristic parameters divide the terminal devices into three groups, and the three groups of terminal devices can access the network device according to the random access opportunities corresponding to the three characteristic parameters. Alternatively, "enabling random access opportunities corresponding to terminal devices associated with one or more groups of leading resources" means: enabling the terminal device to access the network device in a manner of grouping leading resources. For example, three groups of leading resources divide the terminal devices into three groups, and the three groups of terminal devices can access the network device according to the random access opportunities corresponding to the three groups of leading resources.

[0204] How the first information or the second information indicates the above content will be described in detail in Embodiments 2 to 8 and will not be introduced here.

[0205] Step 402: The terminal device determines a first method according to the first information or the second information:

[0206] If the first mode is to allow the terminal device to access the network device, execute step 403;

[0207] If the first method is not allowing the terminal device to access the network device, step 404 is executed.

[0208] In the embodiment of the present application, the first method is to allow the terminal device to access the network device, including:

[0209] In the case where the terminal device has sent a random access request, the first mode instructs the terminal device to continue random access, for example, instructs the terminal device to receive a random access response, or instructs the terminal device to receive downlink sharing information for resolving contention; or,

[0210] In the case that the terminal device has not sent a random access request, the first method instructs the terminal device to start random access, for example, instructs the terminal device to send a random access request.

[0211] In the embodiment of the present application, the first method is to not allow the terminal device to access the network device, including:

[0212] In the case where the terminal device has sent a random access request, the first mode instructs the terminal device to terminate the random access, for example, instructs the terminal device not to receive a random access response, or instructs the terminal device not to receive downlink sharing information for resolving contention; or,

[0213] In the case that the terminal device has not sent a random access request, the first method instructs the terminal device not to start random access, for example, instructs the terminal device not to send a random access request, or instructs the terminal device not to select a preamble code index.

[0214] Step 403: The terminal device accesses the network device, for example:

[0215] In the case where the terminal device has sent a random access request, the terminal device may continue with random access; or,

[0216] In the case where the terminal device has not sent a random access request, the terminal device may initiate random access.

[0217] In an optional implementation, if the first information or the second information is used to indicate the random access opportunity corresponding to the terminal device associated with one or more characteristic parameters in N characteristic parameters, the terminal device can access the network device according to the random access opportunity corresponding to the supported characteristic parameter. For example, as shown in Table 1, if the service type of the terminal device is an industrial wireless sensor network type, the characteristic parameter supported by the terminal device is characteristic parameter 1. In this case, the terminal device can access the network device using the random access opportunity corresponding to characteristic parameter 1. In another optional implementation, if the first information or the second information is used to indicate the random access opportunity corresponding to the terminal device associated with one or more groups of leading resources in X groups of leading resources, the terminal device can access the network device according to the random access opportunity corresponding to the associated leading resource. For example, the preamble code index range corresponding to leading resource 1 is 10 to 20. If the preamble code index selected by the terminal device is 15, the terminal device is associated with leading resource 1, so the terminal device can access the network device using the random access opportunity corresponding to leading resource 1.

[0218] Only one optional implementation is introduced here, and other implementations are described in Examples 2 to 8.

[0219] Step 404: The terminal device does not access the network device, for example:

[0220] In the case where the terminal device has sent a random access request, the terminal device may terminate the random access; or,

[0221] When the terminal device has not sent a random access request, the terminal device may not initiate random access.

[0222] In an optional implementation, the terminal device may refer to a terminal device of a certain type, such as a REDCAP terminal device. In this case, the contents of step 401 to step 404 are used to restrict random access of terminal devices of the REDCAP type. For example, in the above step 402, the terminal device of the REDCAP type has a module for parsing the first information and the second information built in when it leaves the factory. Only this type of terminal device can parse the first information and the second information, while other types of terminal devices cannot parse the first information and the second information. In this case, if the terminal device can parse the first information or the second information, the terminal device is a REDCAP type terminal device, and can access the network device or not access the network device in the first manner indicated by the first information or the second information. If the terminal device cannot parse the first information and the second information, the terminal device is not a REDCAP type terminal device, and the terminal device can access the network device according to the inherent process of random access, for example, according to Figure 2 The access process of random access type 1 is shown to access the network device. With this implementation, by flexibly controlling whether a certain type of terminal device can access the network device, the terminal device accessing the network device can be controlled to achieve the purpose of balancing the network load.

[0223] In the case where the terminal device is a certain type of terminal device, the embodiment of the present application can use one or more of the configuration indication information of the random access opportunity, the association relationship between the characteristic parameter and the terminal device of this type, and the association relationship between the leading resource and the terminal device of this type to restrict whether the terminal device of this type can access the network. In this case, the terminal device of this type can access the network device or not according to the first mode corresponding to itself, so that the terminal device of this type can access the network device more flexibly. Moreover, the present application can also associate the leading resource with the terminal device of this type, or associate the characteristic parameter with the terminal device of this type. In this way, it can also configure whether the terminal device associated with each group of leading resources or each characteristic parameter can access the network, so as to more flexibly control the access volume of the terminal device of this type in the network device at a finer granularity.

[0224] Hereinafter, a terminal device may refer to a certain type of terminal device, such as a REDCAP terminal, that is, the terminal devices described below in this application may be replaced with REDCAP terminals. For another example, an Ultra Reliable Low Latency Communication (URLLC) terminal, that is, the terminal devices described below in this application may be replaced with URLLC terminals.

[0225] Some possible implementations of the first embodiment are described below in combination with the second to eighth embodiments.

[0226] Embodiment 2

[0227] Figure 5 The flowchart of a method for information transmission provided by an embodiment of the present application is exemplarily shown. The method can be executed by a terminal device and a network device, and the terminal device is used to access a cell covered by the network device. Figure 5 As shown, the method includes:

[0228] Step 501: A terminal device receives first information from a network device.

[0229] In the embodiment of the present application, the first information may be carried in a main system information block, a system information block or dedicated radio resource control information. Wherein, in the case where the first information is carried in a main system information block or a system information block, since the terminal device has not yet accessed the network device, the first information may be used to indicate whether the terminal device can access the network device in the initial random access. In the case where the first information is carried in dedicated radio resource control information, since the terminal device has already accessed the network device, the first information may be used to indicate whether the terminal device can access the network device in the next random access.

[0230] Exemplarily, the first information may also be carried in downlink control information. However, since the network device prefers to allow the control signaling in the downlink control information to be quickly sent to each terminal device, if the first information includes the configuration information of the random access opportunity, the first information may occupy more control resources, affecting the transmission efficiency of the downlink control information. Therefore, in a preferred embodiment, the first information is carried in the main system information block, the system information block or the dedicated radio resource control information.

[0231] Step 502: The terminal device obtains the configuration indication information of the random access opportunity from the first information, and determines the state of the configuration indication information of the random access opportunity:

[0232] If the state of the configuration indication information of the random access opportunity is the first state, executing step 503;

[0233] If the state of the configuration indication information of the random access opportunity is the second state, executing step 504;

[0234] If the state of the random access opportunity configuration indication information is the third state, step 505 is executed.

[0235] Step 503: The terminal device accesses the network device.

[0236] Step 504: The terminal device does not access the network device.

[0237] In an optional implementation manner, the state of the configuration indication information of the random access opportunity is a first state, which is used to indicate:

[0238] Allowing a terminal device to access a network device, for example, instructing the terminal device to initiate random access when the terminal device has not initiated a random access request. In this case, the first information may be carried in a primary system information block or a system information block. According to the first information, the terminal device may send a random access request to the network device; or, instructing the terminal device to continue random access when the terminal device has initiated a random access request. In this case, the first information may be carried in downlink control information. According to the first information, the terminal device may receive a random access response or receive downlink shared information for resolving contention; or,

[0239] Enables configuration of random access opportunities for terminal devices.

[0240] In the embodiment of the present application, "enabling the configuration of random access opportunities of terminal devices" is an indication method for allowing terminal devices to access network devices. This method is applicable to terminal devices of the same type. Assuming that the terminal devices that can parse the first information belong to the same type of terminal devices, "enabling the configuration of random access opportunities of terminal devices" means: allowing terminal devices of this type to access network devices, for example, enabling terminal devices of this type to start random access, or enabling terminal devices of this type to continue random access. In this way, terminal devices of this type can access the network device.

[0241] In another optional implementation manner, the state of the configuration indication information of the random access opportunity is a second state, which is used to indicate:

[0242] The terminal device is not allowed to access the network device. For example, when the terminal device has not initiated a random access request, the terminal device is instructed not to initiate random access. In this case, the first information may be carried in the main system information block MIB or the system information block SIB. According to the first information, the terminal device may not send a random access request to the network device or select a preamble code index; or, when the terminal device has initiated a random access request, the terminal device is instructed to terminate the random access. In this case, the first information may be carried in the downlink control information. According to the first information, the terminal device may receive a random access response or receive downlink shared information for resolving contention; or,

[0243] The configuration of random access opportunities for terminal devices is not enabled.

[0244] In the embodiment of the present application, "disabling the configuration of random access opportunities of terminal devices" is an indication method of not allowing terminal devices to access network devices. This method is applicable to terminal devices of the same type. Assuming that the terminal devices that can parse the first information belong to the same type, "disabling the configuration of random access opportunities of terminal devices" means: not allowing terminal devices of this type to access network devices, for example, preventing terminal devices of this type from starting random access, or terminating random access. In this way, terminal devices of this type may not access network devices.

[0245] In yet another optional implementation manner, the state of the configuration indication information of the random access opportunity is a third state, which is used to indicate:

[0246] The first information also includes configuration information of random access opportunities of one or more characteristic parameters.

[0247] The configuration information of the random access opportunity for the characteristic parameters will be described in detail in step 505 and will not be introduced here.

[0248] In an optional implementation manner, the configuration indication information of the random access opportunity may include a first bit, the first bit may include at least two bits, and the bit state of the first bit is used to indicate:

[0249] Allowing the terminal device to access the network device; or,

[0250] Do not allow the terminal device to access the network device; or,

[0251] The first information also includes configuration information of random access opportunities of one or more characteristic parameters.

[0252] For example, Table 3 exemplarily shows an indication method when the first bit includes 2 bits:

[0253]

[0254] Table 3

[0255] In the indication method shown in Table 3:

[0256] When the bit state of the first bit is 11, it indicates that the terminal device is allowed to access the network device;

[0257] When the bit state of the first bit is 00, it indicates that the terminal device is not allowed to access the network device;

[0258] When the bit state of the first bit is 01, it indicates that the first information also includes configuration information of random access opportunities of one or more characteristic parameters.

[0259] In the embodiment of the present application, Table 3 is only an optional implementation. In other optional implementations, the content indicated by the bit state of the first bit may also be other situations, for example, in another situation:

[0260] When the bit state of the first bit is 00, it indicates that the terminal device is allowed to access the network device;

[0261] When the bit state of the first bit is 11, it indicates that the terminal device is not allowed to access the network device;

[0262] When the bit state of the first bit is 10, it indicates that the first information also includes configuration information of random access opportunities of one or more characteristic parameters.

[0263] For example, in yet another case:

[0264] When the bit state of the first bit is 11, it indicates that the terminal device is allowed to access the network device;

[0265] When the bit state of the first bit is 10, it indicates that the terminal device is not allowed to access the network device;

[0266] When the bit state of the first bit is 00, it indicates that the first information also includes configuration information of random access opportunities of one or more characteristic parameters.

[0267] There are many possible situations, which I will not list here one by one.

[0268] In this embodiment, the first bit occupies at least 2 bit positions, so the first bit can have 4 bit states (i.e., 00, 01, 10 and 11), but the first state, the second state and the third state only use three of the bit states, so one bit state can be reserved, which can be used to indicate other information in actual operation.

[0269] In another optional implementation, the first bit may also include only one bit, which is a preset bit in the first information. If the value of this one bit is 1, it is considered that the first bit indicates that the terminal device is allowed to access the network device. If the value of this one bit is 0, it is considered that the first bit indicates that the terminal device is not allowed to access the network device. If the value of this one bit does not exist, that is, the first bit is not included in the first information, in this case, it is considered that the first bit indicates that the first information also includes configuration information of random access opportunities of one or more characteristic parameters. This method allows the first bit to occupy fewer bits.

[0270] It can be understood that “the first information does not include the first bit, and it is considered that the first bit indicates that the first information also includes configuration information of random access opportunities of one or more characteristic parameters” is only an optional embodiment. In other optional embodiments, the first information does not include the first bit, and it can also be considered that the first bit indicates that the terminal device is allowed to access the network device. Alternatively, the first information does not include the first bit, and it can also be considered that the first bit indicates that the terminal device is not allowed to access the network device, without limitation.

[0271] Step 505: The terminal device obtains configuration information of random access opportunities of one or more characteristic parameters from the first information.

[0272] In an embodiment of the present application, when the configuration indication information of the random access opportunity is in the third state, the first information indicates that the configuration information of the random access opportunity of one or more characteristic parameters is also included. This method is to configure the random access opportunity of a group of terminal devices associated with each characteristic parameter in a terminal device grouping manner. For example, if there are 3 characteristic parameters (corresponding to 3 groups of terminal devices), a group of terminal devices associated with each characteristic parameter can use the random access opportunity corresponding to the characteristic parameter to access the network device. Among them, the configuration information of the random access opportunity corresponding to a characteristic parameter may include one or more of the following: time domain resources for random access, frequency domain resources for random access, and a period of random access. Among them, the frequency domain resources for random access may include one or more of the following: the number of uplink scheduled resource blocks, the index of uplink scheduled resource blocks, the number of uplink scheduled subcarriers, the index of uplink scheduled subcarriers, the number of uplink scheduled resource block groups, the group index of uplink scheduled resource blocks, and the frequency domain offset of uplink scheduling. The time domain resources for random access may include one or more of the following: the number of time domain symbols, the index of the time domain symbols, the number of time slots, the index of the time slots, the number of sub-slots, the index of the sub-slots, the number of subframes, the index of the subframes, the number of wireless frames, the index of the wireless frames and the time domain offset.

[0273] In the embodiment of the present application, the configuration indication information of the random access opportunity may further include a second bit, and the second bit is used to indicate the random access opportunities of which characteristic parameters are configured. For example, there are N characteristic parameters in total. If random access opportunities of L characteristic parameters are configured, the bit state of the second bit is used to indicate the value of L. In this case, since there are N characteristic parameters in total, the bit state of the second bit needs to include at least N types to indicate the situation where there are 1 characteristic parameter, 2 characteristic parameters, ..., N characteristic parameters among the N characteristic parameters.

[0274] In an optional implementation, the second bit may include N bits, where the N bits correspond to N characteristic parameters, and the value of one bit is used to indicate whether the random access opportunity of the corresponding characteristic parameter is configured. For example, when the value is 0, it indicates that the random access opportunity of the corresponding characteristic parameter is not configured, and when the value is 1, it indicates that the random access opportunity of the corresponding characteristic parameter is configured. In this way, the terminal device can count the number of bits with a value of 1 in the second bit, and can obtain the configuration information of the random access opportunities of which characteristic parameters are included in the first information. However, this method will waste some bit states, because N bits contain 2 N bit states, can indicate up to 2 N When the value of N is not less than 5, 2 N is greater than N, so some bit states will be wasted. Therefore, we prefer to use the next implementation.

[0275] In another alternative implementation, the second bit may include bits, It means rounding up the result of log2N, for example:

[0276] When N is a power of 2, log2N is an integer, the second bit may include log2N bits, and the second bit has N bit states;

[0277] In the case where N is not a power of 2, log2N is a non-integer and the second bit contains bits, The value of the integer bit obtained by adding 1 to the integer bit in the result of log2N, and the second bit has more than N bit states.

[0278] For example, in one case, if N is 4, the second bit may include 2 bits, and Table 4 exemplarily shows an indication method when the second bit includes 2 bits:

[0279] The bit state of the second bit The second bit indicates the content 00 The first information also includes configuration information of a random access opportunity of a characteristic parameter 01 The first information also includes configuration information of random access opportunities of two characteristic parameters 10 The first information also includes configuration information of random access opportunities of three characteristic parameters: 11 The first information also includes configuration information of random access opportunities of four characteristic parameters

[0280] Table 4

[0281] In another case, if N is 5, the second bit may include 3 bits. Table 5 exemplarily shows an indication method when the second bit includes 3 bits:

[0282] The bit state of the second bit The second bit indicates the content 001 The first information also includes configuration information of a random access opportunity of a characteristic parameter 010 The first information also includes configuration information of random access opportunities of two characteristic parameters 011 The first information also includes configuration information of random access opportunities of three characteristic parameters: 100 The first information also includes configuration information of random access opportunities of four characteristic parameters 101 The first information also includes configuration information of random access opportunities of five characteristic parameters

[0283] Table 5

[0284] Compared with the previous implementation, when N is not less than 5 (for example, N is 5), the second bit in this implementation may include 3 bits, while the second bit in the previous implementation includes 5 bits. Obviously, this implementation helps to reduce the resources occupied by the second bit.

[0285] In the embodiment of the present application, since the second bit is used to indicate the value of L, the terminal device can learn that the first information also includes configuration information of random access opportunities of L types of characteristic parameters, so that the terminal device can obtain L configuration information from the first information according to the value of L. For example, when the configuration information of random access opportunities of L types of characteristic parameters is stored in the first information according to L adjacent configuration tables, the terminal device can obtain L configuration tables from the first information according to the starting position of the first configuration table, the value of L and the number of preset bits occupied by each configuration table, and parse the L configuration tables to obtain L groups of configuration information. Exemplarily, each group of configuration information can also include an identifier of the characteristic parameter, so that the terminal device can determine which L types of characteristic parameters the L groups of characteristic information correspond to according to the identifier of the characteristic parameter included in the L groups of configuration information.

[0286] According to the above content, it can be known that in the embodiment of the present application, the first bit and the second bit can be used to jointly indicate whether the random access is enabled for all terminal devices of a certain type, or for groups of terminal devices of this type, so that the terminal device can determine whether to access the network device or not according to the content enabled this time, and this indication method is more flexible. It can be understood that in the embodiment of the present application, the first bit and the second bit can also exist separately, for example, only the second bit is set without setting the first bit, or only the first bit is set without setting the second bit.

[0287] In the embodiment of the present application, when there are at least two characteristic parameters, the random access opportunities corresponding to the at least two characteristic parameters can be configured according to actual needs. Two possible configuration methods are described below.

[0288] In an optional configuration, the frequency domain resources for random access of at least two characteristic parameters may be configured to be the same, the periods of the time domain resources for random access of at least two sets of characteristic parameters may be configured to be the same, and the time domain resources for random access of at least two sets of characteristic parameters may be configured to be different. Figure 6 The configuration information of random access opportunities of two characteristic parameters is shown as an example. The random access of these two characteristic parameters has the same frequency domain resources (i.e., frequency). Assuming that the duration indicated by a white box is a unit duration, the time domain resources of the random access of these two characteristic parameters are cycled once every 3 unit durations. Assuming that the terminal device associated with the first characteristic parameter is a terminal device with a terminal bandwidth equal to 5MHz, and the terminal device associated with the second characteristic parameter is a terminal device with a terminal bandwidth equal to 10MHz, the terminal device with a terminal bandwidth equal to 5MHz is Figure 6 The terminal device with a terminal bandwidth of 10 MHz can access the time domain resource indicated by the diagonal box in the middle. Figure 6 Access is performed on the time domain resources indicated by the black box.

[0289] In this configuration, since the random access time domain resources of various characteristic parameters are staggered, the terminal devices associated with various characteristic parameters can use different random access time domain resources to access the network device, thereby avoiding the situation where terminal devices associated with multiple characteristic parameters request access at the same time domain resource, thereby reducing the load on the network device. Moreover, if the grouping of characteristic parameters is relatively balanced, for example, the number of terminal devices associated with each characteristic parameter is balanced, the number of terminal devices accessing the network device on each time domain resource can also be relatively balanced.

[0290] In another optional configuration, the frequency domain resources for random access of at least two characteristic parameters may be configured to be the same, the time domain resources for random access of at least two characteristic parameters may be configured to be different, and the periods of the time domain resources for random access of at least two characteristic parameters may be configured to be different. Figure 7 The configuration information of random access opportunities of two characteristic parameters is shown as an example. The random access of these two characteristic parameters has the same frequency domain resources (i.e., frequency). Assuming that the duration indicated by a white box is a unit duration, the time domain resources of the random access of the first characteristic parameter are cycled once every 3 unit durations, and the time domain resources of the random access of the second characteristic parameter are cycled once every 1 unit duration. Assuming that the terminal device associated with the first characteristic parameter is a terminal device of the video surveillance type of service, and the terminal device associated with the second characteristic parameter is a terminal device of the industrial wireless sensor type of service, the video surveillance type of terminal device is Figure 7 The time domain resources indicated by the diagonal box are accessed, while the terminal devices of industrial wireless sensor type are Figure 7 Access is performed on the time domain resources indicated by the black box.

[0291] In this configuration mode, on the one hand, by configuring different random access time domain resources for the two characteristic parameters, the terminal devices associated with the two characteristic parameters can access the network device on different time domain resources, thereby reducing the load on the network device. On the other hand, different access cycles can be configured for the terminal devices associated with various characteristic parameters according to the urgency of their access needs. For example, when the service type of the video surveillance type terminal device is more urgent and it is in urgent need of accessing the network device, a shorter access cycle can be configured for the video surveillance type terminal device. In this way, no matter when the video surveillance type terminal device wants to access the network device, it can find that the next accessible time domain resource is closer, so that the video surveillance type terminal device can access the network device in a timely and rapid manner.

[0292] According to the above two configuration modes, the network device can configure respective random access opportunities for various characteristic parameters according to the access volume of terminal devices associated with each characteristic parameter in the current period in the cell. For example, when various characteristic parameters divide terminal devices according to terminal bandwidth, if the access volume of terminal devices of various terminal bandwidths in the current period is not much different, the same random access time domain resources and cycles can be configured for various characteristic parameters. If the access volume of terminal devices with terminal bandwidth not greater than 10MHz in the current period is small, in order to improve the service transmission rate of terminal devices with terminal bandwidth equal to 10MHz, the network device can allocate more time domain resources for characteristic parameters supported by terminal devices with terminal bandwidth equal to 5MHz or 20MHz. At the same time, in order to enable terminal devices supporting other terminal bandwidths to access smoothly, a longer access cycle can be configured for characteristic parameters supported by terminal devices with terminal bandwidth equal to 10MHz, and a shorter access cycle can be configured for characteristic parameters supported by terminal devices supporting other terminal bandwidths, thereby reducing the impact on the services of terminal devices supporting other terminal bandwidths.

[0293] In the embodiment of the present application, "the configuration indication information of the random access opportunity is in the third state, indicating that the first information also includes the configuration information of the random access opportunity of one or more characteristic parameters" is only an optional implementation mode. In another optional implementation mode, the configuration indication information of the random access opportunity is in the third state, and it can also indicate that the first information also includes the configuration information of whether the terminal device associated with one or more characteristic parameters can access the network device. For example, the first information also includes N bits, and the N bits correspond to the N characteristic parameters. The value of one bit in the N bits is used to indicate:

[0294] Allow the terminal device associated with the characteristic parameter corresponding to the bit to access the network device; or,

[0295] Terminal devices associated with the characteristic parameters corresponding to this bit are not allowed to access the network device.

[0296] By adopting the above implementation mode, the network device can configure whether the terminal device associated with each characteristic parameter can access the network device. In this case, if the terminal device determines that the characteristic parameters supported by the terminal device allow access to the network device, it can access the network device normally. If it determines that the characteristic parameters supported by the terminal device do not allow access to the network device, it may not access the network device. Compared with the method of configuring random access opportunities corresponding to L characteristic parameters, this method does not need to configure random access opportunities for each terminal device associated with each characteristic parameter, so that the access capabilities of terminal devices associated with various characteristic parameters can be indicated with fewer bits, reducing the communication load.

[0297] How to indicate whether a terminal device associated with one or more characteristic parameters can access a network device will be described in detail in subsequent embodiments and will not be specifically introduced here.

[0298] Step 506: The terminal device determines whether there is configuration information of random access opportunities corresponding to the supported feature parameters. If so, execute step 507; if not, execute step 504.

[0299] In the embodiment of the present application, the terminal device can determine the identifier of the characteristic parameter supported by the terminal device according to the association relationship between the characteristic parameter and the terminal device, and obtain the configuration information with the identifier of the characteristic parameter from the L group configuration information, and determine the corresponding random access opportunity from the configuration information. Among them, the association relationship between the characteristic parameter and the terminal device can be defined inside the terminal device according to a preset rule, for example, configured in the terminal device when the terminal device leaves the factory; or, it can also be sent to the terminal device by the network device.

[0300] If the association relationship between the characteristic parameter and the terminal device is sent by the network device to the terminal device, the association relationship between the characteristic parameter and the terminal device may include one or more parameters included in each characteristic parameter and the parameter value range corresponding to the one or more parameters. In this case, for each characteristic parameter, the terminal device can determine the parameter value of the terminal device under each parameter of the characteristic parameter, and judge whether the parameter value satisfies the parameter range of the parameter in the characteristic parameter. If it does, the characteristic parameter is a characteristic parameter supported by the terminal device, and if it does not, the characteristic parameter is not a characteristic parameter supported by the terminal device. For example, assuming that the service type of the terminal device is a video surveillance type, if the terminal device receives the association relationship shown in Table 1 sent by the network device, the terminal device analyzes characteristic parameter 1, characteristic parameter 2, and characteristic parameter 3 respectively. Since the parameter value of the terminal device under the service type parameter is a video surveillance type, and the parameter value range under the service type parameter in characteristic parameter 2 is a video surveillance type, the characteristic parameter supported by the terminal device is characteristic parameter 2.

[0301] Step 507: The terminal device accesses the network device according to the configuration information of the random access opportunity corresponding to the supported characteristic parameters.

[0302] In an embodiment of the present application, the terminal device can obtain the time domain resources and period of random access from the configuration information of the random access opportunity corresponding to the supported characteristic parameters. If the current time period happens to belong to the time domain resources for random access, a random access request can be sent to the network device in the time domain resources to start random access. If the current time period does not belong to the time domain resources for random access, a random access request can be sent to the network device on the next random access time domain resource in a periodic manner to start random access. Of course, if there is no random access opportunity for the terminal device with the supported characteristic parameters, the terminal device may not access the network device, for example, not continue random access, or not start random access.

[0303] By adopting the solution in the second embodiment, the network device can carry one or more of the following three configuration information in the first information: allowing a certain type of terminal device to access the network device, not allowing a certain type of terminal device to access the network device, and indicating which random access opportunity a group of terminal devices associated with each characteristic parameter uses to access the network device in a characteristic parameter grouping manner. In this way, the network device can not only configure the random access of a certain type of terminal device, but also configure the random access of each group of terminal devices in a grouping manner, so that the terminal device of this type can access the network device more flexibly.

[0304] Embodiment 3

[0305] Figure 8 The flowchart of another information transmission method provided by the embodiment of the present application is exemplarily shown. The method can be executed by a terminal device and a network device, and the terminal device is used to access a cell covered by the network device. Figure 8 As shown, the method includes:

[0306] Step 801: A terminal device receives first information from a network device.

[0307] In the embodiment of the present application, the first information may be carried in a main system information block, a system information block or dedicated radio resource control information.

[0308] Step 802, the terminal device determines whether the first information contains configuration indication information of the random access opportunity, if not, execute step 803, if contained, execute step 804.

[0309] In an optional implementation, a third bit may be provided in the first information, and the third bit occupies at least one preset bit position in the first information. In this case, if the terminal device finds that at least one preset bit position does not exist, it is determined that the first information does not contain the configuration indication information of the random access opportunity, and if the terminal device finds that the bit state at at least one preset bit position is present, it is determined that the first information contains the configuration indication information of the random access opportunity.

[0310] Step 803: The terminal device does not access the network device.

[0311] In the above step 803, the terminal device does not access the network device, which may mainly include the following contents:

[0312] The terminal device does not enable configuration of random access opportunities for the terminal device; or,

[0313] In the case where the terminal device does not initiate a random access request, the terminal device does not initiate random access. For example, the first information is carried in the main system information block MIB or the system information block SIB, and the terminal device may not send a random access request to the network device; or,

[0314] In the case where the terminal device has initiated a random access request, the terminal device terminates the random access, for example, the first information is carried in the downlink control information, the terminal device may not receive a random access response, or the terminal device may not receive downlink sharing information for resolving contention.

[0315] In an optional implementation, if the terminal device determines not to access the network device, the terminal device may also start a first timer, and if the first timer completes a timing, the terminal device may re-access the network device. The first timer completing a timing means that the time elapsed by the first timer satisfies the duration of the first timer. For example, when the terminal device first accesses the network device or re-accesses the network device, after the first timer completes a timing, the terminal device may re-select the preamble index and send a random access request to the network device.

[0316] In the embodiment of the present application, the duration of the first timer can be determined according to a predefined rule, for example, it can be preset in the terminal device when the terminal device leaves the factory. Alternatively, the duration of the first timer can also be configured by the network device, for example, carried in the first information and synchronously sent to the terminal device.

[0317] Step 804: The terminal device accesses the network device.

[0318] In the above step 804, the terminal device accesses the network device, which mainly includes the following contents:

[0319] The network device enables configuration of random access opportunities for the terminal device; or,

[0320] In the case where the terminal device has initiated a random access request, the terminal device continues random access, for example, the first information is carried in the downlink control information, and the terminal device may receive a random access response, or the terminal device may receive downlink sharing information for resolving contention; or,

[0321] In the case where the terminal device does not initiate a random access request, the terminal device initiates random access, for example, the first information is carried in the main system information block MIB or the system information block SIB, and the terminal device can send a random access request to the network device; or,

[0322] The first information also includes configuration information of random access opportunities of one or more characteristic parameters. The terminal device obtains the configuration information of random access opportunities corresponding to the supported characteristic parameters from the first information, and accesses the network device according to the random access opportunities corresponding to the supported characteristic parameters.

[0323] Exemplarily, when at least one preset bit position occupied by the third bit is not empty, the bit state of the third bit is also used to indicate at least one of the above contents. Table 6 exemplarily shows an indication method of the third bit:

[0324]

[0325]

[0326] Table 6

[0327] In this implementation, if the terminal device determines that the first information includes configuration indication information of the random access opportunity, the third bit can be obtained from the first information, and the terminal device can be determined to access the network device according to the bit state of the third bit, or to access the network device according to the random access opportunity corresponding to the supported characteristic parameter. The specific implementation process can refer to Example 2, which will not be described in detail here.

[0328] In an optional implementation, the terminal device may also receive third information from the network device, the third information including configuration indication information of the random access method, and the third information may be carried in one or more of the system information, downlink control information, media access layer information, and high-level signaling. When the third information is carried in the system information, the third information is used to indicate the random access method of this random access, and when the third information is carried in the downlink control information, the media access layer information, or the high-level signaling, the third information is used to indicate the random access method of the next random access. For example, when the terminal device first accesses the cell, the network device may carry the third information in the system information, so that the terminal device may access the network device according to the random access method indicated by the third information. After the terminal device accesses the network device, the network device may carry the third information in the high-level signaling, so that when the terminal device is disconnected from the network device, the terminal device may re-access according to the random access method indicated in the high-level signaling.

[0329] In the embodiment of the present application, the configuration indication information of the random access mode may be the fourth bit, the fourth bit includes 2 bits, the fourth bit may have 4 bit states, the 4 bit states may all be used to indicate the random access mode, or may be partially used to indicate the random access mode. For example, Table 7 exemplarily shows an indication mode of the fourth bit.

[0330]

[0331] Table 7

[0332] As shown in Table 7, the bit state of the fourth bit is used to indicate:

[0333] The bit state of the fourth bit is 00, indicating that the terminal device is not allowed to access the network device; or,

[0334] The bit state of the fourth bit is 01, indicating that the random access mode of the terminal device is random access type 1; or,

[0335] The bit state of the fourth bit is 10, indicating that the random access mode of the terminal device is random access type 2; or,

[0336] The bit state of the fourth bit is 11, indicating that the random access mode of the terminal device is random access type 1 or random access type 2.

[0337] For example, Table 8 exemplarily shows another indication method of the fourth bit:

[0338]

[0339] Table 8

[0340] As shown in Table 8, the bit state of the fourth bit is used to indicate:

[0341] The bit state of the fourth bit is 01, indicating that the random access mode of the terminal device is random access type 1; or,

[0342] The bit state of the fourth bit is 10, indicating that the random access mode of the terminal device is random access type 2; or,

[0343] The bit state of the fourth bit is 11, indicating that the random access mode of the terminal device is random access type 1 or random access type 2.

[0344] In this implementation, the network device can set a random access method for a certain type of terminal device that is different from that for other types of terminal devices. For example, if the service type of a certain type of terminal device is more urgent, random access type 2 can be set for this type of terminal device. Since random access type 2 has a faster access speed than random access type 1, it can enable this type of terminal device to access the network device more quickly, thereby improving the real-time performance of this type of terminal device in processing services.

[0345] In another optional implementation, if the network device does not send random access mode configuration indication information to the terminal device, the terminal device may access the network device using a preset random access mode, wherein the preset random access mode may be preset in the terminal device when the terminal device leaves the factory.

[0346] By adopting the solution in Example 3, the terminal device can determine whether to access the network device based on whether the first information contains configuration indication information of the random access opportunity. In this case, when the network device does not allow a certain type of terminal device to access, it may no longer set the configuration indication information of the random access opportunity in the first information, thereby reducing the resources occupied by the first information.

[0347] Embodiment 4

[0348] Fig. 9 The flowchart of a method for information transmission provided by the fourth embodiment is exemplarily shown. The method can be executed by a terminal device and a network device. The terminal device is used to access a cell covered by the network device. Fig. 9 As shown, the method includes:

[0349] Step 901, the terminal device receives second information from the network device, the second information is used to indicate whether the terminal device associated with each characteristic parameter of one or more characteristic parameters is allowed to access the network device, or whether the terminal device associated with one or more groups of leading resources is allowed to access the network device.

[0350] In the embodiment of the present application, the second information may be carried in one or more of the following information:

[0351] System information, radio resource control information, random access response, media access control information, downlink control information, uplink scheduling authorization information, Msg4 (the fourth handshake in random access type 1).

[0352] Exemplarily, if the second information is carried in system information, random access response, media access control information, downlink control information, or uplink scheduling authorization information, since the terminal device has not yet received the contention resolution mechanism sent by the network device, the current random access of the terminal device can also be terminated, so the second information can be applicable to the current random access of the terminal device. If the second information is carried in wireless resource control information or Msg4, since the terminal device has received the contention resolution mechanism sent by the network device, the current random access of the terminal device has been successful, so the second information can be applicable to the next random access of the terminal device.

[0353] Step 902: The terminal device determines supported feature parameters or associated leading resources.

[0354] Step 903, the terminal device determines whether to allow the terminal device to access the network device based on whether the terminal device associated with the supported characteristic parameters is allowed to access the network device and / or whether the terminal device associated with the supported leading resources is allowed to access the network device. If so, execute step 904; if not, execute step 905.

[0355] In the embodiment of the present application, the terminal device may determine whether to allow the terminal device to access the network device in the following manner:

[0356] If the second information is only used to indicate whether a terminal device associated with each of the one or more characteristic parameters is allowed to access the network device, the terminal device determines whether to allow the terminal device to access the network device according to whether the terminal device associated with the supported characteristic parameters is allowed to access the network device; or,

[0357] If the second information is only used to indicate whether terminal devices associated with one or more leading resources are allowed to access the network device, the terminal device determines whether to allow the terminal device to access the network device according to whether the terminal devices associated with the supported leading resources are allowed to access the network device; or,

[0358] If the second information is used to indicate whether the terminal device associated with each of one or more characteristic parameters is allowed to access the network device and the association between the leading resource and the characteristic parameter, the terminal device determines whether to allow the terminal device to access the network device based on whether the terminal device associated with the characteristic parameter corresponding to the supported leading resource is allowed to access the network device.

[0359] How to determine whether to allow a terminal device to access a network device based on characteristic parameters and leading resources will be described in detail in Embodiments 5 to 8 and will not be introduced here.

[0360] Step 904: The terminal device accesses the network device.

[0361] Step 905: The terminal device does not access the network device.

[0362] In an embodiment of the present application, "the second information is used to indicate whether a terminal device associated with each of one or more characteristic parameters is allowed to access the network device, or whether a terminal device associated with one or more groups of leading resources is allowed to access the network device" is only an optional implementation method. In another optional implementation method, the second information can also be used to indicate configuration information of random access opportunities of terminal devices associated with each of one or more characteristic parameters, or to indicate configuration information of random access opportunities of terminal devices associated with one or more groups of leading resources. In this case, the terminal device can access the network device according to the random access opportunities corresponding to the supported characteristic parameters or the associated leading resources.

[0363] In embodiment four, the network device can configure the random access of each group of terminal devices associated with various characteristic parameters or each group of leading resources by configuring the random access of various characteristic parameters or each group of leading resources. In this case, the terminal devices can access the network device in groups, and the terminal devices in the same group can have the same random access configuration, such as accessing the network device or not accessing the network device. In this way, the random access of the terminal devices can be managed more flexibly.

[0364] Regarding the manner of configuring various characteristic parameters or random access opportunities corresponding to each group of leading resources, reference may be made to Embodiment 2. The following only introduces whether configuring various characteristic parameters or each group of leading resources allows access to the network device.

[0365] Embodiment 5

[0366] Fig.10 The flowchart of a method for information transmission provided by the fifth embodiment is exemplarily shown. The method can be executed by a terminal device and a network device. The terminal device is used to access a cell covered by the network device. Fig.10 As shown, the method includes:

[0367] Step 1001, the terminal device receives downlink control information from the network device, the downlink control information includes first indication information, the first indication information is used to indicate whether the terminal device associated with each characteristic parameter of N characteristic parameters is allowed to access the network device, N is an integer greater than 0.

[0368] In the above step 1001, the downlink control information may be one or more of the following information:

[0369] Second downlink control information used to carry a random access response, where the downlink control information is scrambled by the RA-RNTI;

[0370] The third downlink control information is used to carry contention resolution information, where the downlink control information is scrambled by TC-RNTI.

[0371] In the embodiment of the present application, if the first indication information is carried in the second downlink control information or the third downlink control information, since the terminal device does not receive the contention resolution information sent by the network device, it indicates that the current random access of the terminal device can still be terminated, so the first indication information is applicable to the current random access. By carrying the first indication information in different downlink control information, the network device can control the random access being performed by the terminal device, so that the flexibility of random access is better.

[0372] In an embodiment of the present application, the first indication information can indicate whether the terminal device associated with each of the N characteristic parameters is allowed to access the network device in the form of a bit map. Several possible indication methods are introduced below.

[0373] In an optional implementation, the first indication information may be the fifth bit, the fifth bit includes N bits, and the N bits correspond to N characteristic parameters. For one bit in the fifth bit, the value of the bit is used to indicate:

[0374] Allow the terminal device associated with the characteristic parameter corresponding to the bit to access the network device; or,

[0375] Terminal devices associated with the characteristic parameters corresponding to this bit are not allowed to access the network device.

[0376] For example, assuming that there are three characteristic parameters, the first characteristic parameter is associated with a terminal device with a terminal bandwidth equal to 5 MHz, the second characteristic parameter is associated with a terminal device with a terminal bandwidth equal to 10 MHz, and the third characteristic parameter is associated with a terminal device with a terminal bandwidth equal to 20 MHz, then:

[0377] The fifth bit may include 3 bits, and Table 9 exemplarily shows an indication method of the fifth bit.

[0378]

[0379] Table 9

[0380] In the indication method shown in Table 9, for one bit of the fifth bit:

[0381] The value of this bit is 1, indicating that the terminal device associated with the characteristic parameter corresponding to this bit is allowed to access the network device, for example, the terminal device with a terminal bandwidth equal to 5MHz (i.e., the terminal device associated with the first characteristic parameter) and the terminal device with a terminal bandwidth equal to 20MHz (i.e., the terminal device associated with the third characteristic parameter) are allowed to access the network device; or

[0382] The value of this bit is 0, indicating that the terminal device associated with the characteristic parameter corresponding to this bit is not allowed to access the network device. For example, the terminal device with a terminal bandwidth equal to 10MHz (ie, the terminal device associated with the second characteristic parameter) is not allowed to access the network device.

[0383] This implementation method can use the N bits reserved in the downlink control information to indicate whether the terminal device associated with each of the N characteristic parameters is allowed to access the network device, so that the network device can configure the terminal device associated with each characteristic parameter to access the network device. Exemplarily, since the number of bits reserved in the downlink control information of 5G NR is 16, the number of bits in the fifth bit may not be greater than 16.

[0384] In another optional implementation manner, the first indication information may be the sixth bit, and the sixth bit includes bits, in this case, the bit state of the sixth bit can include There are possibilities that each bit state may correspond to one or more characteristic parameters, and the one or more characteristic parameters corresponding to different bit states are not completely the same. Among them, the bit state of the sixth bit can be used to indicate:

[0385] Allow terminal devices associated with one or more characteristic parameters corresponding to the bit state to access the network device, and do not allow terminal devices associated with other characteristic parameters to access the network; or,

[0386] Terminal devices associated with one or more characteristic parameters corresponding to the bit state are not allowed to access the network device, while terminal devices associated with other characteristic parameters are allowed to access the network.

[0387] The following is an explanation using a specific example: Assuming there are three characteristic parameters, the first characteristic parameter is associated with a terminal device with a terminal bandwidth equal to 5MHz, the second characteristic parameter is associated with a terminal device with a terminal bandwidth equal to 10MHz, and the third characteristic parameter is associated with a terminal device with a terminal bandwidth equal to 20MHz, then one or more continuous characteristic parameters and associated terminal devices among these three characteristic parameters may have the following possibilities:

[0388] Continuous three characteristic parameters: There is one possibility, namely the first characteristic parameter, the second characteristic parameter and the third characteristic parameter, associated with terminal devices of arbitrary terminal bandwidth;

[0389] Two consecutive sets of characteristic parameters: There are two possibilities. The first possibility is the first characteristic parameter and the second characteristic parameter, which are associated with terminal equipment with a terminal bandwidth equal to 5 MHz and equal to 10 MHz. The second possibility is the second characteristic parameter and the third characteristic parameter, which are associated with terminal equipment with a terminal bandwidth equal to 10 MHz and equal to 20 MHz.

[0390] 1 set of characteristic parameters: there are 3 possibilities: the first possibility is the first characteristic parameter, associated with a terminal device with a terminal bandwidth equal to 5 MHz; the second possibility is the second characteristic parameter, associated with a terminal device with a terminal bandwidth equal to 10 MHz; the third possibility is the third characteristic parameter, associated with a terminal device with a terminal bandwidth equal to 20 MHz.

[0391] It can be seen that there are six possible situations in which one or more of the three characteristic parameters are continuous. In this way, the sixth bit can be set to include bits, since the value obtained by rounding up log26 is 3, the sixth bit can include 3 bits.

[0392] For example, Table 10 exemplarily shows an indication method of the sixth bit:

[0393]

[0394] Table 10

[0395] In the indication method shown in Table 10, the bit state of the sixth bit is used to indicate:

[0396] The bit state of the sixth bit is 001, indicating that the terminal device associated with the first characteristic parameter (ie, the terminal device with a terminal bandwidth equal to 5 MHz) is allowed to access the network device; or,

[0397] The bit state of the sixth bit is 010, indicating that the terminal device associated with the second characteristic parameter (ie, the terminal device with a terminal bandwidth equal to 10 MHz) is allowed to access the network device; or,

[0398] The bit state of the sixth bit is 011, indicating that the terminal device associated with the third characteristic parameter (ie, the terminal device with a terminal bandwidth equal to 20 MHz) is allowed to access the network device; or,

[0399] The bit state of the sixth bit is 100, indicating that the terminal device associated with the first characteristic parameter and the second characteristic parameter (ie, the terminal device with a terminal bandwidth equal to 5 MHz or 10 MHz) is allowed to access the network device to access the network; or,

[0400] When the bit state of the sixth bit is 101, it indicates that the terminal device associated with the second characteristic parameter and the third characteristic parameter (that is, the terminal device with a terminal bandwidth equal to 10 MHz or 20 MHz) is allowed to access the network device; or,

[0401] When the bit state of the sixth bit is 110, it indicates that terminal devices associated with the first characteristic parameter, the second characteristic parameter, and the third characteristic parameter (ie, terminal devices with arbitrary terminal bandwidth) are allowed to access the network device.

[0402] This implementation can only indicate whether one or more continuous characteristic parameters can access the network device, but cannot indicate whether one or more discontinuous characteristic parameters can access the network device, so the flexibility of the indication is not very good. However, this is only an optional implementation. In another optional implementation, each bit state can correspond to one or more characteristic parameters, and it is not necessary to be limited to one or more continuous characteristic parameters. Although this will increase the number of bits in the sixth bit, it can improve the flexibility of the indication. For example, in the case of three characteristic parameters, there can also be a bit state 111 to indicate whether the terminal device associated with the first characteristic parameter and the third characteristic parameter (i.e., a terminal device with a terminal bandwidth equal to 5MHz or a terminal bandwidth equal to 20MHz) is allowed to access the network device.

[0403] In another optional implementation, the first indication information may be indicated by a special bit state, for example, one or more reserved bits in the downlink control information are pre-selected as the bearer of the first indication information, then:

[0404] When the bit states of one or more reserved bits are all 0, it indicates that the terminal device is not allowed to access the network device; or,

[0405] When the bit states of one or more reserved bits are all 1, it indicates that the terminal device is allowed to access the network device.

[0406] For example, the downlink control information includes 16 reserved bits, and 3 of them are selected as the carrier of the first indication information. If the bit state of these 3 reserved bits is 111, it indicates that all terminal devices of this type are allowed to access the network device; if the bit state of these 3 reserved bits is 000, it indicates that all terminal devices of this type are not allowed to access the network device.

[0407] In another optional implementation, the first indication information can be carried in the scrambling sequence of the downlink control information. For example, N types of characteristic parameters have their own dedicated group identifiers. If the network device allows a terminal device associated with one of the characteristic parameters to access the network device, the group identifier of the characteristic parameter can be used to scramble the downlink control information. In this way, the terminal device associated with the characteristic parameter can successfully descramble the downlink control information using its own group identifier, and then can obtain a random access response or a contention resolution mechanism from the corresponding downlink shared channel according to the downlink control information. In this way, the terminal device associated with the characteristic parameter can continue to access the network. However, the terminal devices associated with other characteristic parameters cannot descramble the downlink control information using their own group identifiers, and thus cannot obtain a random access response or a contention resolution mechanism from the downlink shared channel. In this way, the terminal devices associated with other characteristic parameters cannot continue to access the network.

[0408] In an embodiment of the present application, when a terminal device associated with multiple characteristic parameters is allowed to access a network device, the network device can use the group identifier of each allowed characteristic parameter to separately scramble the downlink control information, so that each terminal device associated with each characteristic parameter allowed to access the network device can use its own group identifier to successfully descramble the downlink control information.

[0409] Step 1002: The terminal device determines whether to allow the terminal device associated with the supported characteristic parameters to access the network device based on the first indication information. If so, execute step 1003; if not, execute step 1004.

[0410] Step 1003: The terminal device obtains a random access response from the downlink shared channel, or obtains contention resolution information from the downlink shared channel, and continues random access.

[0411] Step 1004: The terminal device does not obtain a random access response from the downlink shared channel, or does not obtain contention resolution information from the downlink shared channel, and terminates the random access.

[0412] In the fifth embodiment, by indicating in the downlink control information whether the terminal device associated with each characteristic parameter is allowed to access the network device, the network device can restrict the random access of the terminal device when the terminal device has initiated a random access request. In this case, if a large number of terminal devices associated with a certain characteristic parameter access the network device in the current period, the network device can also restrict the access of the terminal devices associated with the characteristic parameter that access the network device in the current period, so as to reduce the network load and evenly allocate resources to the terminal devices associated with various characteristic parameters.

[0413] Embodiment 6

[0414] Fig.11The flowchart of another information transmission method provided by the sixth embodiment is exemplarily shown. The method can be executed by a terminal device and a network device. The terminal device is used to access a cell covered by the network device. Fig.11 As shown, the method includes:

[0415] Step 1101: The terminal device receives a media access layer protocol data unit MAC PDU from a network device, where the MAC PDU includes second indication information.

[0416] Step 1102: The terminal device determines the position of the second indication information in the MAC PDU:

[0417] If the second indication information is located in the preset media access control information (referring to one or more MAC subPDUs newly added in the MAC PDU), the second indication information is used to indicate whether the terminal device associated with each characteristic parameter of the N characteristic parameters is allowed to access the network device, and step 1103 is executed; or,

[0418] If the second indication information is located in the random access response RAR, the second indication information is used to indicate whether the terminal device receiving the random access response is allowed to access the network device, and step 1104 is executed; or,

[0419] If the second indication information is located in the backoff indication BI, the second indication information is used to indicate whether a terminal device associated with one or more characteristic parameters is allowed to access the network device, and step 1105 is executed.

[0420] Step 1103, the terminal device determines whether to allow the characteristic parameters supported by the terminal device to access the network device according to the second indication information in the preset media access control information, and if so, executes step 1106, if not, executes step 1107.

[0421] In an optional implementation, the second indication information may include S bits, where the S bits are bits included in one or more MAC subheaders newly added in the MAC PDU. Since a MAC subheader can occupy 8 bits, the value of S can be an integer multiple of 8. Exemplarily, the value of S is not less than N, so there may be N bits in the S bits, and these N bits correspond to N characteristic parameters respectively. Among them, the value of one bit in the N bits can be used to indicate:

[0422] Allow the terminal device associated with the characteristic parameter corresponding to the bit to access the network device; or,

[0423] Terminal devices associated with the characteristic parameters corresponding to this bit are not allowed to access the network device.

[0424] For example, when the value of this bit is 1, it indicates that the terminal device associated with the characteristic parameter corresponding to this bit is allowed to access the network device. When the value of this bit is 0, it indicates that the terminal device associated with the characteristic parameter corresponding to this bit is not allowed to access the network device.

[0425] In the embodiment of the present application, when the value of S is greater than N, the N bits can be N consecutive bits among the S bits, or can be N discontinuous bits among the S bits, without limitation.

[0426] Step 1104: The terminal device determines whether to allow the terminal device receiving the random access response to access the network device based on the second indication information in the random access response. If so, execute step 1106; if not, execute step 1107.

[0427] In an optional implementation, the second indication information may include 1 bit, which may be a reserved bit in the random access response, or a reserved bit (i.e., CSI request field) in the uplink scheduling grant information (i.e., UR-grant) in the random access response. The value of the bit is used to indicate:

[0428] allowing the terminal device receiving the random access response to access the network device; or,

[0429] The terminal device receiving the random access response is not allowed to access the network device.

[0430] For example, when the value of this bit is 1, the terminal device receiving the random access response is allowed to access the network device, and when the value of this bit is 0, the terminal device receiving the random access response is not allowed to access the network device.

[0431] In this way, the network device can set the value of the reserved bit in the random access response according to the current access load. For example, when the current access load number is greater than the preset heavy load number, the value of the preset bit in 90% of the random access responses can be set to 0, and the value of the preset bit in the remaining 10% of the random access responses can be set to 1, so as to select 10% of the terminal devices that apply for access to the network device in the current period to allow access to the network device, thereby reducing the number of terminal devices accessing the network device and alleviating the network load. Of course, when the current access load number is less than the preset light load number, the value of the preset bit in each random access response can also be set to 1, so as not to restrict the access of terminal devices.

[0432] In another optional implementation, the second indication information may include 2 bits, which may be 1 reserved bit in the random access response and 1 reserved bit in the uplink scheduling grant information (i.e., CSI request field). The bit states of these two bits are used to indicate:

[0433] allowing the terminal device receiving the random access response to access the network device; or,

[0434] The terminal device receiving the random access response is not allowed to access the network device.

[0435] For example, when the bit state of these two bits is 11, it indicates that the terminal device receiving the random access response is allowed to access the network device. When the value of this bit is not 11, for example, 00, 01 or 10, it indicates that the terminal device receiving the random access response is not allowed to access the network device.

[0436] In the above two implementations, the network device can use a reserved bit in the random access response or the uplink scheduling authorization information to indicate whether the terminal device can access the network device, or can use a reserved bit in the random access response and a reserved bit in the uplink scheduling authorization information to jointly indicate whether the terminal device can access the network device, so that the indication method is more flexible. In addition, since the terminal device that receives the random access response will continue to perform random access, and the terminal device that does not receive the random access response will not continue to perform random access, the random access configuration is carried in the random access response, so that only the terminal device that is to access the network device in the next step can be configured, and all terminal devices do not need to be configured, thereby saving configuration resources.

[0437] Step 1105 , the terminal device determines whether to allow the characteristic parameters supported by the terminal device to access the network device according to the second indication information in the backoff indication, if so, execute step 1106 , if not, execute step 1107 .

[0438] In an optional implementation, the second indication information may include 2 bits, and the 2 bits may be 2 reserved bits in the backoff indication information BI. Since the 2 bits may include at most 4 bit states, the bit states of the 2 bits may be used to indicate 4 possible random access configurations, and the 4 random access configurations may be set according to actual needs. For example, in one scenario:

[0439] The bit state of the 2 bits is 00, indicating that the terminal device is not allowed to access the network device; or,

[0440] The bit state of the 2 bits is 11, indicating that the terminal device is allowed to access the network device;

[0441] In another scenario:

[0442] The bit state of the 2 bits is 00, indicating that the terminal device associated with the characteristic parameter 1 is allowed to access the network device; or,

[0443] The bit state of the 2 bits is 01, indicating that the terminal device associated with the characteristic parameter 2 is allowed to access the network device; or,

[0444] The bit state of the 2 bits is 10, indicating that the terminal device associated with the characteristic parameter 3 is allowed to access the network device; or,

[0445] The bit state of the 2 bits is 11, indicating that the terminal device associated with the characteristic parameter 4 is allowed to access the network device.

[0446] Assuming that there are three characteristic parameters, the first characteristic parameter is associated with a terminal device with a terminal bandwidth equal to 5 MHz, the second characteristic parameter is associated with a terminal device with a terminal bandwidth equal to 5 MHz and equal to 10 MHz, and the third characteristic parameter is associated with a terminal device with a terminal bandwidth equal to 20 MHz. Table 11 exemplarily shows an indication method of the second indication information:

[0447]

[0448] Table 11

[0449] In the indication method shown in Table 11:

[0450] When the bit state of the 2 bits is 00, the terminal device is not allowed to access the network device;

[0451] When the bit state of the two bits is 01, the terminal device associated with the first characteristic parameter (i.e., the terminal device with a terminal bandwidth equal to 5 MHz) is allowed to access the network device;

[0452] When the bit state of the 2 bits is 10, the terminal device associated with the second characteristic parameter (i.e., the terminal device with a terminal bandwidth equal to 5 MHz or equal to 10 MHz) is allowed to access the network device;

[0453] When the bit state of the 2 bits is 11, the terminal device associated with the third characteristic parameter (i.e., the terminal device with a terminal bandwidth equal to 20 MHz) is allowed to access the network device;

[0454] Step 1106: The terminal device sends a contention resolution identifier to the network device. The contention resolution identifier includes a unique identifier of the terminal device, and the terminal device continues random access.

[0455] Step 1107: The terminal device does not send a contention resolution identifier to the network device, and the terminal device terminates random access.

[0456] In the sixth embodiment, by carrying the second indication information in the downlink data information, the random access of the terminal device that obtains the media access control layer protocol data unit MAC PDU (such as a random access response) can be configured. For example, in a certain scenario, although the terminal device associated with a certain characteristic parameter was previously allowed to access the network device, the access load of the terminal device associated with this characteristic parameter in the cell is heavy at this stage. In this case, the random access of the terminal device associated with this characteristic parameter that has received the random access response can also be restricted, thereby reducing the network load in a timely manner.

[0457] The above embodiments all describe how to configure random access of terminal devices from the perspective of grouping terminal devices using characteristic parameters. In the present application, since the random access of terminal devices is also associated with the preamble index, the present application can also group the preamble index to obtain multiple groups of preamble resources, and configure the random access of the terminal device by configuring the random access of each group of preamble resources. The following describes two possible ways of configuring random access of terminal devices through preamble resources, taking Embodiment 7 and Embodiment 8 as examples.

[0458] Embodiment 7

[0459] Fig.12 The flowchart of a method for information transmission provided by Embodiment 7 is exemplarily shown. The method can be executed by a terminal device and a network device. The terminal device is used to access a cell covered by the network device. Fig.12 As shown, the method includes:

[0460] Step 1201: The terminal device receives signaling from a network device, where the signaling includes configuration information of X groups of leading resources, where X is an integer greater than 0.

[0461] In the embodiment of the present application, the configuration information of the X group of preamble resources is used to indicate the preamble index range corresponding to the X group of preamble resources, wherein there are at most 64 preamble indexes in the 5GNR, namely index 0, index 1, index 2, ..., index 63, so X can be an integer greater than 0 and not greater than 64. When configuring the X group of preamble resources, the network device can select one or more preamble indexes from the 64 preamble indexes for configuration, for example, only one preamble index can be selected and configured as one group of preamble resources, or 50 preamble indexes can be selected and configured as three groups of preamble resources.

[0462] The following takes configuring 64 preamble code indexes as X groups of preamble resources as an example to exemplarily introduce two possible configuration methods.

[0463] In an optional configuration, 64 preamble code indexes may be randomly configured as X groups of preamble resources, where the value of X may be any integer greater than 0 and not greater than 64. For example, Table 12 exemplarily shows a correspondence table of randomly configuring X groups of preamble resources:

[0464] Leading resource group 1 2 3 4 5 Preamble index range 0～8 9～20 21～35 36～44 45～63

[0465] Table 12

[0466] As shown in Table 12, when X groups of preamble resources are randomly configured, the number of preamble code indexes in each group of preamble resources may be different, for example:

[0467] Preamble resource group 1 includes preamble index 0 to preamble index 8, a total of 9 preamble indexes;

[0468] Preamble resource group 2 includes preamble code index 9 to preamble code index 20, a total of 12 preamble code indexes;

[0469] Preamble resource group 3 includes preamble index 21 to preamble index 35, a total of 15 preamble indexes;

[0470] Preamble resource group 4 includes preamble index 36 to preamble index 44, a total of 9 preamble indexes;

[0471] Preamble resource group 5 includes preamble code index 45 to preamble code index 63, a total of 19 preamble code indexes.

[0472] In another optional configuration, 64 preamble code indexes may be evenly configured as X groups of preamble resources, where the value of X may be a power of 2, i.e., a value in [2, 4, 8, 16, 32, 64]. For example, Table 13 exemplifies a corresponding relationship table for evenly configuring X groups of preamble resources:

[0473] Leading resource group 1 2 3 4 Preamble index range 0～15 16～31 32～47 48～63

[0474] Table 13

[0475] As shown in Table 13, when X groups of preamble resources are evenly configured, the number of preamble code indexes in each group of preamble resources may be the same, for example:

[0476] Preamble resource group 1 includes preamble index 0 to preamble index 15, a total of 16 preamble indexes;

[0477] Preamble resource group 2 includes preamble index 16 to preamble index 31, a total of 16 preamble indexes;

[0478] Preamble resource group 3 includes preamble index 32 to preamble index 47, a total of 16 preamble indexes;

[0479] Preamble resource group 4 includes preamble code index 48 to preamble code index 63, a total of 16 preamble code indexes.

[0480] The above content is only an optional implementation mode. In another optional implementation mode, the configuration information of the X groups of leading resources may also be determined according to a predefined rule, for example, set inside the terminal device when the terminal device leaves the factory.

[0481] Step 1202: The terminal device receives second information from the network device, where the second information is used to indicate whether the terminal device associated with each group of leading resources in the X groups of leading resources is allowed to access the network device.

[0482] In an embodiment of the present application, the second information may also indicate whether the terminal device associated with each group of leading resources is allowed to access the network device in the form of a bit map. Two possible indication methods are introduced below.

[0483] In an optional implementation, the second information may include a seventh bit, the seventh bit includes X bits, the X bits correspond to X groups of leading resources, and X is an integer greater than 0 and not greater than 64. In this case, the value of one bit in the X bits is used to indicate:

[0484] Allow the terminal device associated with the leading resource corresponding to the bit to access the network device; or,

[0485] The terminal device associated with the leading resource corresponding to this bit is not allowed to access the network device.

[0486] For example, for the four groups of leading resources shown in Table 13, the seventh bit may include four bits, and Table 14 exemplarily shows an indication method of the seventh bit:

[0487] Leading Resources 1 2 3 4 Preamble index range 0～15 16～31 32～47 48～63 The Seventh Bit 1 0 0 1 Instructions allow Not allowed Not allowed allow

[0488] Table 14

[0489] As shown in Table 14, the value of one of the seventh bits is 1, indicating that the terminal device associated with the leading resource corresponding to the bit is allowed to access the network device, and the value of one of the seventh bits is 0, indicating that the terminal device associated with the leading resource corresponding to the bit is not allowed to access the network device.

[0490] In another optional implementation manner, the second information may include an eighth bit, and the eighth bit includes bits, each bit may correspond to Y groups of leading resources in X groups of leading resources, and the bit state of each bit is used to indicate whether the terminal device associated with the corresponding Y groups of leading resources is allowed to access the network device. Among them, the value of Y can be an integer greater than 0 and not greater than X. For example, if there are 12 groups of leading resources, and every 4 groups of leading resources correspond to 1 bit, then the eighth bit may include 3 bits, the value of the first bit is used to indicate whether the terminal devices associated with the 1st to 4th groups of leading resources are allowed to access the network device, the value of the second bit is used to indicate whether the terminal devices associated with the 5th to 8th groups of leading resources are allowed to access the network device, and the value of the third bit is used to indicate whether the terminal devices associated with the 9th to 12th groups of leading resources are allowed to access the network device.

[0491] In this implementation, the value of Y can be configured by the network device to the terminal device, or it can be a predefined integer, for example, set inside the terminal device when the terminal device leaves the factory. If the value of Y is configured by the network device to the terminal device, since the terminal device does not know the value of Y, the ninth bit needs to be set in the second information, and the bit state of the ninth bit is used to indicate the value of Y. The specific implementation can refer to Example 2. If the value of Y is a predefined integer, since the terminal device knows the value of Y, there is no need to set the ninth bit in the second information to indicate the value of Y.

[0492] It can be understood that the above-mentioned embodiments of the present application are only several optional embodiments. In other embodiments, each bit can be set to correspond to any number of groups of leading resources, for example, the first bit corresponds to 3 groups of leading resources, the second bit corresponds to 1 group of leading resources, and the third bit corresponds to 2 groups of leading resources, and the leading resources corresponding to two adjacent bits can be continuous or discontinuous. In this case, random access to each group of leading resources can be configured more flexibly. Of course, in this case, the association relationship between each bit and the leading resource can be pre-set in the terminal device.

[0493] Step 1203: The terminal device determines a preamble code index corresponding to random access, and determines a preamble resource associated with the terminal device according to the preamble code index and configuration information of the X groups of preamble resources.

[0494] In the embodiment of the present application, the method for the terminal device to determine the preamble code index corresponding to the random access may refer to the existing process, for example: in random access type 1, the system information may also include a preamble code index set, and the terminal device may randomly select a preamble code index (for example, preamble code index 12) from the preamble code index set as the preamble code index for this random access. In this way, referring to Table 13, since the preamble code index 12 is within the preamble code index range of the preamble resource group 1, the terminal device may determine that the preamble resource associated with the terminal device is the preamble resource group 1.

[0495] Step 1204, the terminal device determines whether the leading resource associated with the terminal device is allowed to access the network device, if so, execute step 1205, if not, execute step 1206.

[0496] Referring to Table 14, if the preamble index selected by the terminal device belongs to preamble resource group 1 or preamble resource group 4, the preamble resource associated with the terminal device is allowed to access the network device. If the preamble index selected by the terminal device belongs to preamble resource group 2 or preamble resource group 3, the preamble resource associated with the terminal device is not allowed to access the network device.

[0497] Step 1205: The terminal device accesses the network device, for example, the terminal device initiates random access, or the terminal device continues random access.

[0498] Step 1206: The terminal device does not access the network device, for example, the terminal device does not initiate random access, or the terminal device terminates random access.

[0499] In Example 7, the network device can limit the random access of the terminal device by limiting the random access of the leading resources. In this way, even if the terminal devices are not grouped according to characteristic parameters, different random access configurations can be set for different terminal devices.

[0500] The above content is only an optional implementation mode. In another optional implementation mode, the second information may also include configuration information of random access opportunities of terminal devices associated with each group of leading resources. In this case, the terminal device may access the network device according to the random access opportunities corresponding to the associated leading resources. Among them, regarding the indication of the configuration information of random access opportunities of terminal devices associated with X groups of leading resources included in the second information, it can be specifically referred to how the first information includes the configuration information of random access opportunities of N characteristic parameters in Embodiment 2 and Embodiment 3, which will not be introduced here.

[0501] Embodiment 8

[0502] Fig.13The flowchart of an information transmission method provided by the eighth embodiment is exemplarily shown. The method can be executed by a terminal device and a network device. The terminal device is used to access a cell covered by the network device. Fig.13 As shown, the method includes:

[0503] Step 1301: The terminal device receives signaling from a network device, where the signaling includes configuration information of X groups of leading resources and associations between the X groups of leading resources and N characteristic parameters, where X and N are integers not less than 0.

[0504] In an optional implementation manner, the association relationship between X groups of leading resources and N characteristic parameters may be:

[0505] A group of leading resources corresponds to a characteristic parameter; or,

[0506] Multiple groups of leading resources correspond to one characteristic parameter; or,

[0507] A set of leading resources corresponds to multiple characteristic parameters.

[0508] For example, Table 15 shows an association relationship table of X groups of leading resources and N characteristic parameters:

[0509] Leading resource group 1 2 3 Preamble Index 0～19 20～39 40～63 Characteristic parameters Industrial Wireless Sensor Networks Wearable devices Video surveillance

[0510] Table 15

[0511] In the association relationship shown in Table 15, 64 preamble code indexes are randomly configured into 3 groups of preamble resources. The terminal devices associated with the 3 characteristic parameters correspond to 3 types of services, and one characteristic parameter can correspond to a group of preamble resources. In this way, different preamble resources can be associated with terminal devices of different service types, for example:

[0512] Preamble resource group 1 is associated with industrial wireless sensor network type terminal equipment, and the preamble code index range is 0 to 19;

[0513] Preamble resource group 2 is associated with a wearable device type terminal device, and the preamble code index range is 20 to 39;

[0514] Preamble resource group 3 is associated with a terminal device of the video surveillance type, and the preamble code index range is 40 to 63.

[0515] Table 16 shows another association relationship table between X groups of leading resources and N characteristic parameters:

[0516]

[0517] Table 16

[0518] In the association relationship shown in Table 16, 64 preamble code indexes are randomly configured into 3 groups, and the terminal devices associated with 2 characteristic parameters correspond to 2 terminal bandwidths. One characteristic parameter can correspond to multiple groups of preamble resources, for example:

[0519] Preamble resource group 1 and preamble resource group 2 correspond to terminal devices with a terminal bandwidth not greater than 5 MHz. The preamble code index range of preamble resource group 1 is 0 to 19, and the preamble code index range of preamble resource group 2 is 20 to 39;

[0520] Preamble resource 3 corresponds to terminal devices with a terminal bandwidth greater than 5 MHz and not greater than 10 MHz, and the preamble code index range is 40 to 63.

[0521] Table 17 shows another association table between X groups of leading resources and N characteristic parameters:

[0522]

[0523] Table 17

[0524] In the association relationship shown in Table 17, 64 preamble code indexes are evenly configured into 2 groups, and the terminal devices associated with the three characteristic parameters correspond to the three mobilities. Multiple characteristic parameters can correspond to a group of preamble resources, for example:

[0525] Preamble resource group 1 corresponds to fixed terminal devices and terminal devices with a mobile frequency less than the first frequency, and the preamble code index range of preamble resource group 1 is 0 to 31;

[0526] Preamble resource group 2 corresponds to terminal devices whose mobile frequency is greater than the first frequency, and the preamble code index range of preamble resource group 2 is 32-63.

[0527] Step 1302: The terminal device receives second information from the network device, where the second information is used to indicate the following contents:

[0528] A random access opportunity of a terminal device associated with each group of preamble resources in the X groups of preamble resources; or,

[0529] Whether to allow the terminal device associated with each group of leading resources in the X groups of leading resources to access the network device; or,

[0530] A random access opportunity of a terminal device associated with each of the N characteristic parameters; or,

[0531] Whether to allow the terminal device associated with each of the N characteristic parameters to access the network device.

[0532] The following uses the second information used to indicate the random access opportunity of the terminal device associated with each group of leading resources in the X groups of leading resources, or whether the terminal device associated with each group of leading resources in the X groups of leading resources can access the network device as an example to introduce the subsequent process. If the second information is used to indicate the random access opportunity of the terminal device associated with each characteristic parameter in the N types of characteristic parameters, or whether the terminal device associated with each characteristic parameter in the N types of characteristic parameters can access the network device, the terminal device can determine the associated leading resource according to the preamble code index selected by itself, determine the characteristic parameter corresponding to the associated leading resource according to the association relationship between the leading resource and the characteristic parameter, and use the random access configuration of the characteristic parameter to access the network device or not access the network device.

[0533] Step 1303: The terminal device determines the leading resource corresponding to the supported characteristic parameter according to the association relationship between the leading resource and the characteristic parameter.

[0534] For example, referring to Table 15, if the service type of the terminal device is a wearable device, the leading resource corresponding to the characteristic parameter supported by the terminal device is leading resource group 2.

[0535] Step 1304, the terminal device determines whether to allow the terminal device to access the network device based on the leading resources corresponding to the supported characteristic parameters. If so, execute step 1305, if not, execute step 1306.

[0536] Step 1305: The terminal device accesses the network device.

[0537] Step 1306: The terminal device does not access the network device.

[0538] In an optional implementation, if the second information is carried in the downlink control information, the second information can be used to indicate whether the terminal device associated with each group of leading resources in the X groups of leading resources is allowed to access the network device. In this case, if the leading resource corresponding to the characteristic parameter supported by the terminal device allows access to the network device, the terminal device can continue to access randomly. If the leading resource corresponding to the characteristic parameter supported by the terminal device does not allow access to the network device, the terminal device can terminate the random access. In this case, even if the terminal device has sent a random access request, the network device can determine the leading resource allowed for access and / or the leading resource not allowed for access based on the number of terminal devices associated with various characteristic parameters that have been accessed in the cell and the association between the characteristic parameters and the leading resource. For example, as shown in Table 14, in the current time period, if the number of terminal devices of the video surveillance class accessing the cell is large, and the number of terminal devices of other service types accessing is small, the second information can be used to indicate that the leading resource group 3 corresponding to the video surveillance class is not allowed to be used for access, and / or the second information can be used to indicate that the leading resource group 1 and the leading resource group 2 corresponding to other service types are allowed to be used for random access. For another example, as shown in Table 15, in the current time period, if the number of terminal devices accessing the cell with a maximum terminal bandwidth equal to 5 MHz is large, while the number of terminal devices accessing the cell with other maximum terminal bandwidths is small, the second information may be used to indicate that the leading resource group 1 supporting the maximum terminal bandwidth equal to 5 MHz is not allowed to be used for random access, and / or the second information is used to indicate that the leading resource group 2 supporting the maximum terminal bandwidth not equal to 5 MHz (for example, supporting a maximum terminal bandwidth equal to 10 MHz, and / or supporting a maximum terminal bandwidth equal to 20 MHz) is allowed to be used for random access.

[0539] In an optional implementation, if the second information is carried in the system information, the second information can be used to indicate a random access opportunity for a terminal device associated with each group of leading resources in the X groups of leading resources. In this case, the terminal device can select a preamble code index from the preamble code index range corresponding to the leading resource corresponding to the supported characteristic parameter as the preamble code index for this random access, and can send a random access request to the network device at the random access opportunity of the leading resource corresponding to the supported characteristic parameter, and the random access request includes the preamble code index for this random access, so that the terminal device can start random access.

[0540] The scheme in Example 8 is adopted. Since each preamble code index allows one terminal device to access the network device, by associating X groups of preamble resources and N characteristic parameters, the terminal device associated with each characteristic parameter selects the preamble code for access in the preamble resource corresponding to the characteristic parameter. In this way, the number of network devices accessed by each characteristic parameter can also be controlled.

[0541] The embodiments of the present application can restrict random access of terminal devices by utilizing one or more of the configuration indication information of random access opportunities, the association between characteristic parameters and terminal devices, and the association between leading resources and terminal devices. In this case, the terminal device can access the network device or not access the network device in accordance with the first mode corresponding to itself, and does not need to have the same random access configuration as other terminal devices. In this way, the flexibility of the terminal device in accessing the network device can be improved.

[0542] It should be noted that the names of the above-mentioned information are only examples. With the evolution of communication technology, the names of any of the above-mentioned information may change. However, no matter how the names change, as long as their meanings are the same as those of the above-mentioned information in this application, they fall within the scope of protection of this application.

[0543] The above mainly introduces the solution provided by the present application from the perspective of the interaction between various network elements. It can be understood that in order to realize the above functions, the above-mentioned network elements include hardware structures and / or software modules corresponding to the execution of various functions. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed in this document, the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0544] According to the above method, Fig.14 A schematic diagram of the structure of the information transmission device 1401 provided in the embodiment of the present application, as shown in FIG. Fig.14 As shown, the information transmission device 1401 can be a terminal device or a network device, or a chip or a circuit, such as a chip or circuit that can be set in a terminal device, or a chip or circuit that can be set in a network device.

[0545] Furthermore, the information transmission device 1401 may further include a bus system, wherein the processor 1402, the memory 1404, and the transceiver 1403 may be connected via the bus system.

[0546] It should be understood that the processor 1402 may be a chip. For example, the processor 1402 may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processor (DSP), a micro controller unit (MCU), a programmable logic device (PLD), or other integrated chips.

[0547] In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 1402 or an instruction in the form of software. The steps of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in the processor 1402 for execution. The software module can be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 1404, and the processor 1402 reads the information in the memory 1404 and completes the steps of the above method in conjunction with its hardware.

[0548] It should be noted that the processor 1402 in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor can be combined and performed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0549] It can be understood that the memory 1404 in the embodiment of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0550] When the information transmission device 1401 corresponds to the terminal device in the above method, the information transmission device 1401 may include a processor 1402, a transceiver 1403 and a memory 1404. The memory 1404 is used to store instructions, and the processor 1402 is used to execute the instructions stored in the memory 1404 to implement the above method. Figures 1 to 13 A related scheme of a terminal device in any one or more corresponding methods shown in .

[0551] When the information transmission device 1401 is the above-mentioned terminal device, the information transmission device 1401 can be used to execute the method executed by the terminal device in any one of the above-mentioned embodiments 1 to 8.

[0552] The information transmission device 1401 is the above-mentioned terminal device, and when executing the first embodiment, the transceiver 1403 can receive the first information sent by the network device, the first information includes the configuration indication information of the random access opportunity, and the processor 1402 can determine the first mode according to the configuration indication information of the random access opportunity. Alternatively, the transceiver 1403 can also receive the first information sent by the network device, and the processor 1402 can also determine the first mode according to whether the configuration indication information of the random access opportunity is included in the first information. Alternatively, the transceiver 1403 can also receive the second information sent by the network device, the second information is used to indicate the first mode of the terminal device associated with each characteristic parameter of one or more characteristic parameters, and the processor 1402 can also determine the first mode according to the second information. Alternatively, the transceiver 1401 can also receive the second information sent by the network device, the second information is used to indicate the first mode of the terminal device associated with one or more leading resources, and the processor 1402 can also determine the first mode according to the second information. Among them, the first mode is one of accessing the network device, not accessing the network device, performing random access, and not performing random access.

[0553] When the information transmission device 1401 corresponds to the network device in the above method, the information transmission device 1401 may include a processor 1402, a transceiver 1403 and a memory 1404. The memory 1404 is used to store instructions, and the processor 1402 is used to execute the instructions stored in the memory 1404 to implement the above method. Figures 1 to 13 A related scheme of a terminal device in any one or more corresponding methods shown in .

[0554] When the information transmission device 1401 is the above-mentioned network device, the information transmission device 1401 can be used to execute the method executed by the network device in any one of the above-mentioned embodiments 1 to 8.

[0555] The information transmission device 1401 is the above-mentioned network device, and when executing the first embodiment, the transceiver 1403 can send the first information to the terminal device, the first information includes the configuration indication information of the random access opportunity, the first information is used for the terminal device to determine the first mode according to the configuration indication information of the random access opportunity, and the processor 1402 can allow the terminal device to access the network device when the first mode is accessing the network device or performing random access. Alternatively, the transceiver 1403 can also send the first information to the terminal device, the first information is used for the terminal device to determine the first mode according to whether the configuration indication information of the random access opportunity is included in the first information, and the processor 1402 can allow the terminal device to access the network device when the first mode is accessing the network device or performing random access. Alternatively, the transceiver 1403 can also send the second information to the terminal device, the second information indicates the first mode of the terminal device associated with each characteristic parameter of one or more characteristic parameters, the second information is used for the terminal device to determine the first mode according to the second information, and the processor 1402 can allow the terminal device to access the network device when the first mode is accessing the network device or performing random access. Alternatively, the transceiver 1403 may also send second information to the terminal device, the second information indicating a first mode of the terminal device associated with one or more leading resources, the second information is used by the terminal device to determine the first mode according to the second information, and the processor 1402 may allow the terminal device to access the network device when the first mode is accessing the network device or performing random access. The first mode is one of accessing the network device, not accessing the network device, performing random access, and not performing random access.

[0556] For the concepts, explanations, detailed descriptions and other steps related to the technical solutions provided in the embodiments of the present application involved in the information transmission device, please refer to the descriptions of these contents in the aforementioned methods or other embodiments, which will not be repeated here.

[0557] According to the above method, Fig.15 A schematic diagram of the structure of the information transmission device 1501 provided in the embodiment of the present application is shown in FIG. Fig.15 As shown, the information transmission device 1501 may include a communication interface 1503, a processor 1502 and a memory 1504. The communication interface 1503 is used to input and / or output information; the processor 1502 is used to execute a computer program or instruction so that the information transmission device 1501 can achieve the above Figures 1 to 13 The method on the terminal device side in the related scheme, or the device 1501 for information transmission implements the above Figures 1 to 13 In the embodiment of the present application, the communication interface 1503 can implement the above Fig.14 The solution implemented by the transceiver 1403, the processor 1502 can implement the above Fig.14The processor 1402 implements the solution, and the memory 1504 can implement the above Fig.14 The solution implemented by the memory 1404 will not be described in detail here.

[0558] Based on the above embodiments and the same concept, Fig.16 A schematic diagram of an information transmission device 1601 provided in an embodiment of the present application, such as Fig.16 As shown, the information transmission device 1601 can be a terminal device or a network device, or can be a chip or a circuit, such as a chip or a circuit that can be set in a terminal device or a network device.

[0559] The information transmission device 1601 may correspond to the terminal device in the above method. The information transmission device 1601 may implement the above Figures 1 to 13 The information transmission device 1601 may include a processing unit 1602 and a transceiver unit 1603.

[0560] When the information transmission device 1601 is the above-mentioned terminal device, the transceiver unit 1603 can be a sending unit or a transmitter when sending information, and the transceiver unit 1603 can be a receiving unit or a receiver when receiving information. The transceiver unit 1603 can be a transceiver, and this transceiver, transmitter or receiver can be a radio frequency circuit. When the information transmission device 1601 includes a storage unit, the storage unit is used to store computer instructions, and the processing unit 1602 is connected to the storage unit in communication, and the processing unit 1602 executes the computer instructions stored in the storage unit, so that the information transmission device 1601 can be used to execute the method executed by the terminal device in any of the above-mentioned embodiments 1 to 8. Among them, the processing unit 1602 can be a general-purpose central processing unit (CPU), a microprocessor, and an application specific integrated circuit (Application Specific Intergrated Circuit, ASIC).

[0561] The information transmission device 1601 is the above-mentioned terminal device, and when executing the first embodiment, the transceiver unit 1603 can receive the first information sent by the network device, the first information includes the configuration indication information of the random access opportunity, and the processing unit 1602 can determine the first mode according to the configuration indication information of the random access opportunity. Alternatively, the transceiver unit 1603 can also receive the first information sent by the network device, and the processing unit 1602 can also determine the first mode according to whether the configuration indication information of the random access opportunity is included in the first information. Alternatively, the transceiver unit 1603 can also receive the second information sent by the network device, the second information is used to indicate the first mode of the terminal device associated with each characteristic parameter of one or more characteristic parameters, and the processing unit 1602 can also determine the first mode according to the second information. Alternatively, the transceiver unit 1601 can also receive the second information sent by the network device, the second information is used to indicate the first mode of the terminal device associated with one or more leading resources, and the processing unit 1602 can also determine the first mode according to the second information. Among them, the first mode is one of accessing the network device, not accessing the network device, performing random access, and not performing random access.

[0562] When the information transmission device 1601 is the above-mentioned network device, the transceiver unit 1603 can be a sending unit or a transmitter when sending information, and the transceiver unit 1603 can be a receiving unit or a receiver when receiving information. The transceiver unit 1603 can be a transceiver, and this transceiver, transmitter or receiver can be a radio frequency circuit. When the information transmission device 1601 includes a storage unit, the storage unit is used to store computer instructions, the processor is connected to the memory, and the processing unit 1602 executes the computer instructions stored in the memory, so that the information transmission device 1601 can be used to execute the method executed by the network device in any of the above-mentioned embodiments 1 to 8. Among them, the processing unit 1602 can be a general-purpose central processing unit (CPU), a microprocessor, and an application specific integrated circuit (Application Specific Intergrated Circuit, ASIC).

[0563] The information transmission device 1601 is the above-mentioned network device, and when executing the first embodiment, the transceiver unit 1603 can send the first information to the terminal device, the first information includes the configuration indication information of the random access opportunity, the first information is used for the terminal device to determine the first mode according to the configuration indication information of the random access opportunity, and the processing unit 1602 can allow the terminal device to access the network device when the first mode is accessing the network device or performing random access. Alternatively, the transceiver unit 1603 can also send the first information to the terminal device, the first information is used for the terminal device to determine the first mode according to whether the configuration indication information of the random access opportunity is included in the first information, and the processing unit 1602 can allow the terminal device to access the network device when the first mode is accessing the network device or performing random access. Alternatively, the transceiver unit 1603 can also send the second information to the terminal device, the second information indicates the first mode of the terminal device associated with each characteristic parameter of one or more characteristic parameters, the second information is used for the terminal device to determine the first mode according to the second information, and the processing unit 1602 can allow the terminal device to access the network device when the first mode is accessing the network device or performing random access. Alternatively, the transceiver unit 1603 may further send second information to the terminal device, the second information indicating a first mode of the terminal device associated with one or more leading resources, the second information being used by the terminal device to determine the first mode according to the second information, and the processing unit 1602 may allow the terminal device to access the network device when the first mode is accessing the network device or performing random access. The first mode is one of accessing the network device, not accessing the network device, performing random access, and not performing random access.

[0564] When the information transmission device 1601 is a chip, the transceiver unit 1603 may be an input and / or output interface, a pin or a circuit, etc. The processing unit 1602 may execute the computer execution instructions stored in the storage unit, so that the chip in the information transmission device 1601 executes the method executed by any one of the embodiments 1 to 8. Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc. The storage unit may also be a storage unit located outside the chip in the information transmission device 1601, such as a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM), etc.

[0565] For the concepts, explanations, detailed descriptions and other steps related to the technical solution provided in the embodiment of the present application involved in the information transmission device 1601, please refer to the description of these contents in the aforementioned method or other embodiments, which will not be repeated here.

[0566] It can be understood that the functions of each unit in the above-mentioned information transmission device 1601 can be implemented by referring to the corresponding method embodiment, and will not be repeated here.

[0567] It should be understood that the division of the units of the above information transmission device 1601 is only a division of logical functions. In actual implementation, all or part of them can be integrated into one physical entity, or they can be physically separated. Fig.14 The processing unit 1602 may be implemented by the transceiver 1403 of the Fig.14 The processor 1402 is implemented.

[0568] According to the method provided in the embodiment of the present application, the present application also provides a computer program product, which includes: a computer program code, when the computer program code is run on a computer, the computer executes Figures 1 to 13 A method according to any one of the embodiments shown.

[0569] According to the method provided in the embodiment of the present application, the present application also provides a computer-readable storage medium, which stores a program code, and when the program code is run on a computer, the computer executes Figures 1 to 13 A method according to any one of the embodiments shown.

[0570] According to the method provided in the embodiment of the present application, the present application also provides a system, which includes one or more terminal devices and one or more network devices mentioned above.

[0571] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disc (SSD)).

[0572] The network devices in the above-mentioned various device embodiments correspond to the network devices or terminal devices in the terminal devices and method embodiments, and the corresponding modules or units perform the corresponding steps. For example, the communication unit (transceiver) performs the steps of receiving or sending in the method embodiment, and other steps except sending and receiving can be performed by the processing unit (processor). The functions of the specific units can refer to the corresponding method embodiments. Among them, the processor can be one or more.

[0573] The terms "component", "module", "system", etc. used in this specification are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program and / or a computer. By way of illustration, both applications running on a computing device and a computing device can be components. One or more components may reside in a process and / or an execution thread, and a component may be located on a computer and / or distributed between two or more computers. In addition, these components may be executed from various computer-readable media having various data structures stored thereon. Components may, for example, communicate through local and / or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system and / or a network, such as the Internet interacting with other systems through signals).

[0574] Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0575] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0576] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0577] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0578] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0579] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0580] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for information transmission, characterized in that: The method is applied to a first type of terminal device, comprising: Receive second information sent by a network device, where the second information is used to indicate a first mode of a terminal device associated with each characteristic parameter of a plurality of characteristic parameters, where the plurality of characteristic parameters include one or more of a service type, a power consumption level, a power consumption requirement, and a beam identifier; A first method is determined according to the second information, where the first method is one of: accessing a network device, not accessing a network device, performing random access, and not performing random access.

2. The method according to claim 1, characterized in that The first type of terminal equipment is a reduced capability terminal equipment REDCAP UE.

3. The method according to claim 1 or 2, characterized in that The characteristic parameters satisfy one or more of the following: The business types include industrial wireless sensor network IWSN type, camera type, wearable type, video monitoring type and not limited business type; The power consumption levels include high power consumption level, medium power consumption level, and low power consumption level; The power consumption requirement is used to indicate the power consumption requirement of the first type of terminal device for executing services; The beam identifier is used to indicate beams of different shapes or directions received by the first type of terminal device.

4. The method according to any one of claims 1 to 3, characterized in that The multiple characteristic parameters also include one or more of terminal type, system bandwidth, terminal bandwidth, subcarrier spacing, frequency range, frequency band, carrier, duplex type, peak rate, delay, mobility, modulation order, and number of antennas.

5. The method according to any one of claims 1 to 4, characterized in that The multiple characteristic parameters also include a parameter value range corresponding to each characteristic parameter.

6. The method according to any one of claims 1 to 5, characterized in that The second information includes N bits, where N is an integer greater than or equal to 2, and each of the N bits is used to indicate whether a terminal device associated with a corresponding characteristic parameter can access the network device.

7. The method according to any one of claims 1 to 5, characterized in that The second information includes an association relationship between the leading resource and the characteristic parameter; and determining the first method according to the second information includes: A first mode of the first type of terminal device is determined according to an association relationship between the leading resource and the characteristic parameter and the characteristic parameters supported by the first type of terminal device.

8. The method according to claim 7, characterized in that The first manner of determining the first type of terminal device according to the association relationship between the leading resource and the characteristic parameter and the characteristic parameter supported by the first type of terminal device includes: Determine X groups of leading resources; the X groups of leading resources are determined according to a predefined rule, or receive a signaling from a network device, the signaling is used to configure the X groups of leading resources; wherein X is an integer greater than 0 and not greater than 64; The second information includes X bits, and the X bits indicate the first mode of the characteristic parameters associated with each group of leading resources in a bitmap manner, and the first mode of the first type of terminal device is determined according to the characteristic parameters supported by the first type of terminal device and the bits corresponding to the leading resources associated with the characteristic parameters; or The second information indicates a first mode of characteristic parameters associated with each Y group of leading resources, and determines the first mode of the first type of terminal device based on the characteristic parameters supported by the first type of terminal device and the Y groups of leading resources to which the characteristic parameters belong; wherein the value of Y is a configured or predefined integer.

9. The method according to any one of claims 1 to 8, characterized in that The second information is system information.

10. The method according to any one of claims 1 to 8, characterized in that The second information is downlink control information or media access control information, the second information includes N bits, N is an integer greater than or equal to 2, and the N bits indicate a first mode of a terminal device associated with each characteristic parameter of the N characteristic parameters in a bitmap manner; The determining the first method according to the second information includes: The first method is determined according to the characteristic parameters supported by the first type of terminal equipment and the second information.

11. The method according to any one of claims 1 to 8, characterized in that The second information is a random access response or uplink scheduling authorization information, and the second information indicates a first mode of the first type of terminal device; The determining the first method according to the second information includes: The first mode is determined according to an instruction of the second information.

12. The method according to any one of claims 1 to 11, characterized in that The method further comprises: Determine that the network device is not connected, and start a first timer; The duration of the first timer is determined according to a predefined rule or configured by the network device.

13. A method for information transmission, characterized in that: The method comprises: Sending second information to a first type of terminal device, where the second information is used to indicate a first mode of the terminal device associated with each characteristic parameter in a plurality of characteristic parameters, where the plurality of characteristic parameters include one or more of a service type, a power consumption level, a power consumption requirement, and a beam identifier, and the second information is used by the first type of terminal device to determine a first mode, where the first mode is one of: accessing a network device, not accessing a network device, performing random access, and not performing random access; In a case where the second information indicates that the first type of terminal device accesses a network device or performs random access, the first type of terminal device is allowed to access or perform random access.

14. The method according to claim 13, characterized in that The first type of terminal equipment is a reduced capability terminal equipment REDCAP UE.

15. The method according to claim 13 or 14, characterized in that The characteristic parameters satisfy one or more of the following: The business types include industrial wireless sensor network IWSN type, camera type, wearable type, video monitoring type and not limited business type; The power consumption levels include high power consumption level, medium power consumption level, and low power consumption level; The power consumption requirement is used to indicate the power consumption requirement of the first type of terminal device for executing services; The beam identifier is used to indicate beams of different shapes or directions received by the first type of terminal device.

16. The method according to any one of claims 13 to 15, characterized in that The multiple characteristic parameters also include one or more of terminal type, system bandwidth, terminal bandwidth, subcarrier spacing, frequency range, frequency band, carrier, duplex type, peak rate, delay, mobility, modulation order, and number of antennas.

17. The method according to any one of claims 13 to 16, characterized in that The multiple characteristic parameters also include a parameter value range corresponding to each characteristic parameter.

18. The method according to any one of claims 13 to 17, characterized in that The second information includes N bits, where N is an integer greater than or equal to 2, and each of the N bits is used to indicate whether a terminal device associated with a corresponding characteristic parameter can access the network device.

19. The method according to any one of claims 13 to 16, characterized in that The second information includes an association relationship between leading resources and characteristic parameters, and the second information is used by the first type of terminal device to determine a first mode of the first type of terminal device according to the association relationship between the leading resources and characteristic parameters and the characteristic parameters supported by the first type of terminal device.

20. The method of claim 19, wherein: The second information includes X bits, and the X bits indicate a first mode of a characteristic parameter associated with X groups of leading resources in a bit map manner, where X is an integer greater than 0 and not greater than 64; or, the second information indicates a first mode of a characteristic parameter associated with each Y group of leading resources, and the value of Y is a configured or predefined integer.

21. The method according to any one of claims 13 to 20, characterized in that The second information is system information.

22. The method according to any one of claims 13 to 20, characterized in that The second information is downlink control information or media access control information, and the second information includes N bits, where N is an integer greater than or equal to 2, and the N bits indicate the first mode of the terminal device associated with each of the N characteristic parameters in the form of a bit map. The second information is used for the first type of terminal device to determine the first mode based on the supported characteristic parameters and the second information.

23. The method according to any one of claims 13 to 20, characterized in that The second information is a random access response or uplink scheduling authorization information, the second information indicates a first mode of the first type of terminal device, and the second information is used by the first type of terminal device to determine the first mode according to the indication of the second information.

24. The method according to any one of claims 13 to 23, characterized in that The method further comprises: Determine that the network device is not connected, and start a first timer; The duration of the first timer is determined according to a predefined rule or configured by the network device.

25. An information transmission device, characterized in that: include: A transceiver unit, configured to receive second information sent by a network device, wherein the second information is used to indicate a first mode of a terminal device associated with each characteristic parameter of a plurality of characteristic parameters, wherein the plurality of characteristic parameters include one or more of a service type, a power consumption level, a power consumption requirement, and a beam identifier; A processing unit is used to determine a first mode according to the second information, where the first mode is one of: accessing a network device, not accessing a network device, performing random access, and not performing random access.

26. The device according to claim 25, characterized in that The apparatus is a first type of terminal equipment or the apparatus is located in a first type of terminal equipment, and the first type of terminal equipment is a reduced capability terminal equipment REDCAP UE.

27. The device according to claim 25 or 26, characterized in that The multiple characteristic parameters also include one or more of terminal type, system bandwidth, terminal bandwidth, subcarrier spacing, frequency range, frequency band, carrier, duplex type, peak rate, delay, mobility, modulation order, and number of antennas.

28. The device according to any one of claims 25 to 27, characterized in that The multiple characteristic parameters also include a parameter value range corresponding to each characteristic parameter.

29. The device according to any one of claims 25 to 28, characterized in that The second information includes N bits, where N is an integer greater than or equal to 2, and each of the N bits is used to indicate whether a terminal device associated with a corresponding characteristic parameter can access the network device.

30. The device according to any one of claims 25 to 28, characterized in that The second information includes an association relationship between the leading resource and the characteristic parameter; and the processing unit is specifically configured to: A first mode of the first type of terminal device is determined according to an association relationship between the leading resource and the characteristic parameter and the characteristic parameters supported by the first type of terminal device.

31. The device according to claim 30, characterized in that The processing unit is specifically used for: Determine X groups of leading resources; the X groups of leading resources are determined according to a predefined rule, or receive a signaling from a network device, the signaling is used to configure the X groups of leading resources; wherein X is an integer greater than 0 and not greater than 64; The second information includes X bits, and the X bits indicate the first mode of the characteristic parameters associated with each group of leading resources in a bitmap manner, and the first mode of the first type of terminal device is determined according to the characteristic parameters supported by the first type of terminal device and the bits corresponding to the leading resources associated with the characteristic parameters; or The second information indicates a first mode of characteristic parameters associated with each Y group of leading resources, and determines the first mode of the first type of terminal device based on the characteristic parameters supported by the first type of terminal device and the Y groups of leading resources to which the characteristic parameters belong; wherein the value of Y is a configured or predefined integer.

32. The device according to any one of claims 25 to 31, characterized in that The second information is system information.

33. The device according to any one of claims 25 to 31, characterized in that The second information is downlink control information or media access control information, the second information includes N bits, N is an integer greater than or equal to 2, and the N bits indicate a first mode of a terminal device associated with each characteristic parameter of the N characteristic parameters in a bitmap manner; The processing unit is specifically used to determine the first method according to the characteristic parameters supported by the first type of terminal equipment and the second information.

34. The device according to any one of claims 25 to 31, characterized in that The second information is a random access response or uplink scheduling authorization information, and the second information indicates a first mode of the first type of terminal device; The processing unit is specifically used to determine the first mode according to an instruction of the second information.

35. An information transmission device, characterized in that: The device comprises: A transceiver unit, configured to send second information to a first type of terminal device, wherein the second information is used to indicate a first mode of the terminal device associated with each characteristic parameter in a plurality of characteristic parameters, wherein the plurality of characteristic parameters include one or more of a service type, a power consumption level, a power consumption requirement, and a beam identifier, and the second information is used by the first type of terminal device to determine a first mode, wherein the first mode is one of: accessing a network device, not accessing a network device, performing random access, and not performing random access; A processing unit, used to allow the first type of terminal device to access or perform random access when the second information indicates that the first type of terminal device accesses the network device or performs random access.

36. The device according to claim 35, characterized in that The first type of terminal equipment is a reduced capability terminal equipment REDCAP UE.

37. The device according to claim 35 or 36, characterized in that The multiple characteristic parameters also include one or more of terminal type, system bandwidth, terminal bandwidth, subcarrier spacing, frequency range, frequency band, carrier, duplex type, peak rate, delay, mobility, modulation order, and number of antennas.

38. The device according to any one of claims 35 to 37, characterized in that The multiple characteristic parameters also include a parameter value range corresponding to each characteristic parameter.

39. The device according to any one of claims 35 to 38, characterized in that The second information includes N bits, where N is an integer greater than or equal to 2, and each of the N bits is used to indicate whether a terminal device associated with a corresponding characteristic parameter can access the network device.

40. The device according to any one of claims 35 to 38, characterized in that The second information includes an association relationship between leading resources and characteristic parameters, and the second information is used by the first type of terminal device to determine a first mode of the first type of terminal device according to the association relationship between the leading resources and characteristic parameters and the characteristic parameters supported by the first type of terminal device.

41. The device according to claim 40, characterized in that The second information includes X bits, and the X bits indicate a first mode of a characteristic parameter associated with X groups of leading resources in a bit map manner, where X is an integer greater than 0 and not greater than 64; or, the second information indicates a first mode of a characteristic parameter associated with each Y group of leading resources, and the value of Y is a configured or predefined integer.

42. The device according to any one of claims 35 to 41, characterized in that The second information is system information.

43. The device according to any one of claims 35 to 41, characterized in that The second information is downlink control information or media access control information, and the second information includes N bits, where N is an integer greater than or equal to 2, and the N bits indicate the first mode of the terminal device associated with each of the N characteristic parameters in the form of a bit map. The second information is used for the first type of terminal device to determine the first mode based on the supported characteristic parameters and the second information.

44. The device according to any one of claims 35 to 41, characterized in that The second information is a random access response or uplink scheduling authorization information, the second information indicates a first mode of the first type of terminal device, and the second information is used by the first type of terminal device to determine the first mode according to the indication of the second information.

45. An information transmission device, characterized in that: It includes a processor and a communication interface, wherein the communication interface is used to receive signals from other communication devices other than the information transmission device and transmit them to the processor or send signals from the processor to other communication devices other than the information transmission device, and the processor is used to implement the method as described in any one of claims 1 to 12 or any one of claims 13 to 24 through logic circuits or execution code instructions.

46. ​​An information transmission device, characterized in that: The device comprises a processor connected to a memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the device performs the method as claimed in any one of claims 1 to 12 or any one of claims 13 to 24.

47. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 12 or any one of claims 13 to 24 is implemented.

48. A chip, characterized in that: Including processor and interface; The processor is used to read instructions to execute the information transmission method according to any one of claims 1 to 12 or any one of claims 13 to 24.

49. A system for information transmission, characterized in that: Includes the information transmission device described in any one of claims 25-34, and the information transmission device described in any one of claims 35-44.

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