CN110536349B - Method, device, equipment and storage medium for determining back-off time - Google Patents
Method, device, equipment and storage medium for determining back-off time Download PDFInfo
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- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0289—Congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
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Abstract
The embodiment of the invention discloses a method, a device, equipment and a storage medium for determining a back-off time, wherein the method comprises the following steps: when the physical random access channel is congested, the base station determines the service type of the terminal; the base station determines a time interval or a backoff time of the backoff access corresponding to the terminal according to the service type of the terminal; and the base station sends the time interval or the backoff time of the backoff access to the terminal.
Description
Technical Field
The present invention relates to the internet of things, and in particular, to a method, an apparatus, a device, and a storage medium for determining a backoff time.
Background
In applications of cellular internet of things, there are scenarios where a large number of users access a network concurrently, such as: the intelligent meter reading, intelligent lamp post and other services have the condition that a large number of terminals report data to the network at the same or similar time, and network congestion is very easy to occur in the process of accessing the network by multiple users at the same time, so that access failure of many users is caused.
In the existing scheme, a process of accessing a terminal to a network is shown in fig. 1. When a plurality of terminals access the network at the same time:
step 1: a terminal (UE) transmits a random access Preamble (Preamble) in an uplink narrowband physical random access CHannel (Narrow Physical Random Access CHannel, NPRACH) via a first message (MSG 1).
Step 2: the base station (eNB) transmits a random access response, e.g., a second message (MSG 2), to the terminal. If the physical random access CHannel (Physical Random Access CHANNEL, NPRACH) is congested, the base station will inform the user of a time interval T of back-off access in MSG 2', the user will choose a random number T in the (0, T) interval, and re-initiate random access after waiting T seconds.
and 5, the terminal sends an RRC connection Complete (RRC Con Complete) message to the base station, and sends the RRC connection Complete (RRC Con Complete) message through an MSG5 message.
Disadvantages of the prior art: when the PRACH channel is congested, the rollback access time interval T is a cell-level parameter, and different services or different user settings cannot be distinguished. After the initial access of the plurality of users fails, random access attempts are initiated again, and the plurality of users select a random time to re-access the attempts in (0, T), but because each cell can only be set to a T value, the plurality of users still have larger probability of access failure when re-accessing the attempts.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a method, an apparatus, a device, and a storage medium for determining a backoff time to solve at least one of the problems in the prior art.
The technical scheme of the embodiment of the invention is realized as follows:
the embodiment of the invention provides a method for determining a back-off time, which comprises the following steps:
when the PRACH channel is congested, the base station determines the service type of the terminal;
the base station determines a time interval or a backoff time of the backoff access corresponding to the terminal according to the service type of the terminal;
and the base station sends the time interval or the backoff time of the backoff access to the terminal.
The embodiment of the invention provides a device for determining a back-off time, which comprises:
a first determining unit, configured to determine, by the base station, a service type of the terminal when the PRACH channel is congested;
a second determining unit, configured to determine a time interval or a backoff time of the backoff access corresponding to the terminal according to the service type of the terminal;
and the sending unit is used for sending the time interval or the backoff time of the backoff access to the terminal.
The embodiment of the invention provides a base station, which comprises a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor realizes the steps in the method for determining the back-off time when executing the program.
An embodiment of the present invention provides a computer-readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor performs the steps in the above-mentioned method of determining a backoff time.
In the embodiment of the invention, when the PRACH channel is congested, the base station determines the service type of the terminal; the base station determines a time interval or a backoff time of the backoff access corresponding to the terminal according to the service type of the terminal; the base station sends the time interval or the backoff time of the backoff access to the terminal, so that the time interval or the backoff time of the backoff access allocated to the terminal can be allocated to the terminal according to different service types, and the access probability of the terminal in the next access network is improved.
Drawings
Fig. 1 is a schematic implementation flow chart of a method for determining a backoff time according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a network architecture according to an embodiment of the present invention;
fig. 3 is a schematic implementation flow chart of a method for determining a backoff time according to an embodiment of the present invention;
fig. 4 is a schematic implementation flow chart of a method for determining a backoff time according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a composition structure of an apparatus for determining a backoff time according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a hardware entity of a base station according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further elaborated below with reference to the drawings and examples.
In this embodiment, a network architecture is provided first, fig. 2 is a schematic diagram of the composition structure of the network architecture according to the embodiment of the present invention, and as shown in fig. 2, the data synchronization architecture includes two or more terminals 11 to 1N and a base station 31, wherein the terminals 11 to 1N and the base station 31 interact through a network 21. Terminals in the field Of the internet Of things (Internet Of Things, IOT) generally may be various types Of devices with information processing capability, for example, the terminals may include a mobile Point Of Sale (POS) machine, a personal bicycle, a smart light pole, a meter reading terminal, a sensing device, etc.
The embodiment provides a method for determining the backoff time, which can be used for improving the access probability of a terminal in the next access network by allocating the backoff access time or the backoff time to the terminal according to different service types.
Fig. 3 is a schematic implementation flow chart of a method for determining a backoff time according to an embodiment of the present invention, as shown in fig. 3, the method includes:
step S301, when PRACH channel is congested, the base station determines the service type of the terminal;
in this embodiment, the base station determines the service type of the terminal, which at least includes three modes:
mode one: the base station determines the service type of the terminal through a service type field in the random access message; in a second mode, the base station determines the service type of the terminal through the resource position occupied by the terminal for transmitting the random access message; in a third mode, the base station predicts the service type of the terminal initiating random access in the current period based on the service type of the historical online terminal, so as to determine the service type of the terminal.
The terminal in this embodiment may be a common terminal or an internet of things terminal, that is, the common terminal is, for example, a current mobile phone, the internet of things terminal is, for example, a shared bicycle, a shared automobile, an intelligent lamp post, an intelligent curtain, a meter reading terminal and the like, and the service type of the terminal may be the service type of the common terminal, or the service type of the terminal is the service type of the internet of things terminal, where the service type of the internet of things terminal includes a mobile POS machine service, a shared bicycle service, an intelligent lamp post service and a meter reading service.
Step S302, the base station determines a time interval or a backoff time of the backoff access corresponding to the terminal according to the service type of the terminal;
step S303, the base station sends the time interval or the backoff time of the backoff access to the terminal.
In other embodiments, the base station sends the time interval of the fallback access to the terminal, including: and the base station sends the time interval or the backoff time of the backoff access to the terminal through MSG 2.
In this embodiment, the base station sets different access backoff time T or time interval T of backoff access according to the service type, if the base station sends the time interval T of backoff access to the terminal, the terminal selects a random time to re-access in (0, T); if the base station sends a backoff time t to the terminal, the terminal re-accesses the attempt after the backoff time t.
In the embodiment of the invention, when the PRACH channel is congested, the base station determines the service type of the terminal; the base station determines a time interval or a backoff time of the backoff access corresponding to the terminal according to the service type of the terminal; the base station sends the time interval or the backoff time of the backoff access to the terminal, so that the time interval or the backoff time of the backoff access allocated to the terminal can be allocated to the terminal according to different service types, and the access probability of the terminal in the next access network is improved.
In the embodiment of the present invention, step S301, the base station determining the service type of the terminal includes:
the base station determines the service type of the terminal according to the service type field in the random access message sent by the terminal; or the base station determines the service type of the terminal according to the resource position occupied by the terminal for sending the random access message.
In the first implementation manner, the random access message may be implemented by using MSG1, where the MSG1 in the prior art does not include a service type field of the terminal, and the method provided in this embodiment needs to add the transmission content of the existing MSG1, and the added MSG1 includes the service type field. It should be noted that the random access message may also be implemented by using other messages. It should be noted that, the third mode does not need to change the existing scheme, in particular, does not need to change the flow of the terminal side, and only needs to change the flow of the network side.
In the second implementation manner, a different terminal may negotiate with the base station, so as to determine a resource location (e.g., a subcarrier) occupied by the random access message, for example, for the terminal of the first service type, the occupied resource location is 1; for the terminal of the second service type, the occupied resource position is 3; for the terminal of the third service type, the occupied resource position is 2; thus, terminals of different service types occupy different resource positions, and the base station can determine the service type of the terminal according to the resource positions. In other embodiments, the base station may also broadcast the resource positions occupied by the terminals with different service types, and after receiving the broadcast message of the base station, the terminal selects different resource positions according to its own service type to send the random access message, so that the base station determines the service type of the terminal according to the resource positions of the random access message.
In other embodiments, in step S301, the determining, by the base station, a service type of the terminal includes:
step S11, the base station determines the current period of time to which the current time belongs;
and step S12, the base station determines the service type of the terminal according to the current time period and the service type of the historical online terminal.
In other embodiments, the determining, by the base station, the service type of the terminal according to the current period and the service type of the historical online terminal includes:
the base station predicts the service type of the terminal initiating random access in the current period based on the service type of the historical online terminal;
the base station determines the predicted service type as the service type of the terminal.
In other embodiments, the predicting, by the base station, the service type of the terminal that initiates the random access in the current period based on the service type of the historical online terminal includes:
the base station queries a first preset relation table according to the current time period to obtain access probabilities corresponding to different service types in the current time period in history; the first preset relation table is used for representing the mapping relation among the service type, the access probability and the current time period of the historical online terminal;
and the base station determines the service type of the terminal according to the service type of which the access probability is larger than a first threshold value in the first preset relation table.
In other embodiments, the base station predicts the service type of the terminal initiating random access in the current period based on the service type of the historical online terminal, and further includes:
if the access probability is greater than 1 service type of the first threshold, determining the service type of the terminal from the service types of which the access probability is greater than the first threshold according to the preset priorities of different service types; or if the service type with the access probability larger than the first threshold value is larger than 1, determining the service type with the maximum access probability as the service type of the terminal.
In other embodiments, the determining, by the base station, a time interval or a backoff time of the backoff access corresponding to the terminal according to the service type of the terminal includes:
the base station queries a second preset relation table according to the service type of the terminal to obtain a time interval or a backoff time of the backoff access corresponding to the terminal, wherein the second preset relation table is used for representing that the service type of different terminals corresponds to different time intervals of the backoff access, or the second preset relation table is used for representing that the service type of different terminals corresponds to different backoff times.
In the second preset relation table, a time interval of the rollback access corresponding to the service type with sensitive time delay is smaller than a time interval of the rollback access corresponding to the service type with insensitive time delay; or, in the second preset relation table, the rollback time corresponding to the service type sensitive to the time delay is smaller than the rollback time corresponding to the service type insensitive to the time delay; the time delay sensitive service types at least comprise mobile POS machine service and bicycle service, and the time delay insensitive service types at least comprise meter reading service.
In other embodiments, the method further comprises: the step of forming the second preset relationship table, the step of forming the second preset relationship table includes: the base station forms a second preset relation table based on the service type of the historical online terminal, the time when the historical online terminal accesses the network and the number of the terminals in different time periods.
In other embodiments, the method further comprises: in the process that each terminal is accessed to a network, the base station correspondingly identifies the service type of each terminal based on the message uploaded by each terminal, and the service type of the historical online terminal is obtained; or the base station receives the service types of all terminals sent by the core network to obtain the service types of the historical online terminals.
The present embodiment can at least solve the following technical problems: the network side predicts the service type of the terminal initiating random access in the current period based on the service type of the historical online terminal, and sets different access back-off times according to the service type, the time delay sensitive service sets shorter access back-off time, the time delay insensitive service sets relatively longer access back-off time so as to realize different types of service or different users of the same type of service, and initiates a re-access attempt within staggered time as much as possible so as to improve the success rate of accessing the network.
Fig. 4 is a schematic implementation flow chart of a method for determining a backoff time according to an embodiment of the present invention, as shown in fig. 4, the method includes:
step S401: the base station side stores the time when the user accesses the network, the service type and the user number information of different service types, and performs intelligent statistical analysis to obtain the probability of initiating random access of a certain type of service at a certain time.
In the implementation process, the probability of random access may be determined based on table 1.
TABLE 1
After the user accesses the network, the base station obtains the service type of the user, which specifically includes but is not limited to the following methods: method 1, the identification in MSG3 or MSG5 message reported by the terminal: in the process of accessing the network, the base station side identifies the service type of the user through a message (such as MSG3, MSG5 or adding service type identification in initial transmission of the service) and the like reported by the terminal. Method 2, the core network informs the base station of the service type: the core network recognizes the service type of the user and informs the base station. Such as: after the user is initially attached to the core network, the core network acquires the service type of the user and informs the base station of the service type information of the user.
Step S402: the base station side sets different access back-off time values according to the service types, the time delay sensitive service sets shorter access back-off time, and the time delay insensitive service sets relatively longer access back-off time.
TABLE 2
Step S403: the base station side inquires in the probability table of each service type of the corresponding access period stored by the base station side based on the moment of initiating access of the current user, and when the probability of a certain service is highest and higher than a certain threshold, the base station side predicts the service of the current user as the service type.
The implementation process is as follows:
when a new user tries to access the network, if the PRACH channel is congested at this time, the base station side inquires in the probability table of each service type of the corresponding access period stored by the base station side based on the moment of initiating access of the current user, and the following judging methods can be selected:
method 1: when the probability of a certain service is highest and is higher than a certain threshold, the base station side predicts the service of the current user as the service type. Such as: the new user distributes and accesses at 6 o ' clock at night, the base station side discovers based on the probability table that the probability of the intelligent lamp post service is highest (45%) and higher than a given threshold value (such as 35%) from 6 o ' clock to 7 o ' clock at night in a time period, and predicts that the service type of the current user is the intelligent lamp post service.
Method 2: when the probability of a certain type of service is higher than a certain threshold, in the certain type of service, the base station side can select the service with high priority as the predicted service type of the current user according to the service priority of the congestion time configured in advance. Such as: such as: the new user distributes and starts to access at 6 o ' clock at night, the base station side discovers based on a probability table that the probability of the intelligent lamp post service and the shared bicycle service is higher than a given threshold value (such as 35%) at 6 o ' clock to 7 o ' clock at night in a time period, and predicts that the current user is the shared bicycle service if the cell is configured to be higher in priority than the intelligent lamp post service in the congestion moment; if the district is configured to be higher in the priority of the intelligent lamp post service than the shared bicycle service at the congestion moment, the current user is predicted to be the intelligent lamp post service.
Step S404: if the PRACH channel is congested at this time, the base station selects a corresponding access backoff time T based on the predicted service type of the user currently attempting to access the network, and issues the access backoff time T to the terminal in MSG 2.
In other embodiments, the base station side may also select a random number between (0, t) as the access backoff time based on the predicted traffic type of the user currently attempting to access the network, and issue the random number to the terminal in MSG 2.
From the above, it can be seen that the examples of the present invention provide the following embodiments:
1) The network side predicts the service type of the terminal initiating random access in the current period based on the service type of the historical online terminal, and sets different access back-off time according to the service type.
2) The base station side stores the time when the user accesses the network, the service type and the user number information of different service types, and performs intelligent statistical analysis to obtain the probability of initiating random access of a certain type of service at a certain time.
3) The base station side inquires in the probability table of each service type of the corresponding access period stored by the base station side based on the moment of initiating access of the current user, and when the probability of a certain service is highest and higher than a certain threshold, the base station side predicts the service of the current user as the service type.
4) The base station side inquires in the probability table of each service type of the corresponding access period stored by the base station side based on the moment of initiating access of the current user, when the probability of a certain service is higher than a certain threshold, the base station side can select the service with high priority as the predicted service type of the current user according to the service priority of the congestion moment configured in advance in the service types.
5) If the PRACH channel is congested at this time, the base station selects a corresponding access back-off time T based on the predicted service type of the user currently attempting to access the network, and issues the corresponding access back-off time T to the terminal in the MSG 2; the base station side can also select a random number between (0, t) as access back-off time based on the predicted service type of the user currently attempting to access the network, and issue the random number to the terminal in MSG 2.
Compared with the prior art, the embodiment has the following technical advantages: in the prior art, after the initial access of a plurality of users fails, random access attempt is initiated again, and a plurality of users select a random time to re-access the attempt in (0, T), but because each cell can only be set to a T value, when the plurality of users re-access the attempt, the access failure still has a larger probability. In this embodiment, the network side intelligently predicts and identifies the service type and sets different access back-off times, the delay sensitive service sets a shorter access back-off time, and the delay insensitive service sets a relatively longer access back-off time, so as to implement different services of different types or different users of the same type of service, initiate a re-access attempt within staggered time as much as possible, and improve the success rate of the access network.
Based on the foregoing embodiments, the embodiments of the present invention provide a device for determining a backoff time, where the device includes units included in the device and modules included in the units, and sub-modules included in the modules may be implemented by a processor in a base station; of course, the method can also be realized by a specific logic circuit; in an implementation, the processor may be a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.
Fig. 5 is a schematic diagram of a composition structure of an apparatus for determining a backoff time according to an embodiment of the present invention, as shown in fig. 5, the apparatus 500 includes a first determining unit 501, a second determining unit 502, and a transmitting unit 503, wherein:
a first determining unit 501, configured to, when the PRACH channel is congested, determine a service type of the terminal by the base station;
a second determining unit 502, configured to determine a time interval or a backoff time of the backoff access corresponding to the terminal according to the service type of the terminal;
a sending unit 503, configured to send the time interval or the backoff time of the backoff access to the terminal.
In other embodiments, the sending unit is further configured to send, through MSG2, the time interval or the backoff time of the backoff access to the terminal.
In other embodiments, the first determining unit is configured to determine a service type of the terminal according to a service type field in a random access message sent by the terminal; or determining the service type of the terminal according to the resource position occupied by the terminal for sending the random access message.
In other embodiments, the first determining unit includes:
the first determining module is used for determining the current time period to which the current time belongs;
and the second determining module is used for determining the service type of the terminal according to the current time period and the service type of the historical online terminal.
In other embodiments, the second determining module includes:
a prediction sub-module, configured to predict a service type of a terminal initiating random access in the current period based on a service type of a historical online terminal;
and the determining submodule is used for determining the predicted service type as the service type of the terminal.
In other embodiments, the prediction submodule is configured to:
inquiring a first preset relation table according to the current time period to obtain access probabilities corresponding to different service types in the current time period historically; the first preset relation table is used for representing the mapping relation among the service type, the access probability and the current time period of the historical online terminal;
and determining the service type of the terminal according to the service type of which the access probability is larger than a first threshold value in the first preset relation table.
In other embodiments, the prediction submodule is further configured to:
if the access probability is greater than 1 service type of the first threshold, determining the service type of the terminal from the service types of which the access probability is greater than the first threshold according to the preset priorities of different service types; or if the service type with the access probability larger than the first threshold value is larger than 1, determining the service type with the maximum access probability as the service type of the terminal.
In other embodiments, the second determining unit is configured to query a second preset relationship table according to a service type of the terminal to obtain a time interval or a backoff time of the backoff access corresponding to the terminal;
the second preset relation table is used for representing time intervals of different back-off access corresponding to service types of different terminals, or representing different back-off times corresponding to service types of different terminals.
In the second preset relation table, a time interval of the rollback access corresponding to the service type with sensitive time delay is smaller than a time interval of the rollback access corresponding to the service type with insensitive time delay; or, in the second preset relation table, the rollback time corresponding to the service type sensitive to the time delay is smaller than the rollback time corresponding to the service type insensitive to the time delay;
the time delay sensitive service types at least comprise mobile POS machine service and bicycle service, and the time delay insensitive service types at least comprise meter reading service.
In other embodiments, the apparatus further includes a forming unit configured to form a second preset relationship table based on the service type of the historical online terminal, the time at which the historical online terminal accesses the network, and the number of terminals in different time periods.
In other embodiments, the device further includes an identifying unit, configured to identify, during the process that each terminal accesses the network, a service type of each terminal based on the message reported by each terminal, so as to obtain a service type of the historical online terminal;
or the base station receives the service types of all terminals sent by the core network to obtain the service types of the historical online terminals.
The description of the apparatus embodiments above is similar to that of the method embodiments above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the embodiments of the apparatus of the present invention, please refer to the description of the embodiments of the method of the present invention.
It should be noted that, in the embodiment of the present invention, if the above-mentioned method for determining the backoff time is implemented in the form of a software function module, and sold or used as a separate product, the method may also be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied essentially or in part contributing to the prior art in the form of a software product stored in a storage medium, comprising several instructions for causing a base station to perform all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, an optical disk, or other various media capable of storing program codes. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
Correspondingly, the embodiment of the invention provides a base station, which comprises a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor realizes the steps in the method for determining the back-off time when executing the program.
An embodiment of the present invention provides a computer-readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor performs the steps in the above-mentioned method of determining a backoff time.
It should be noted here that: the description of the storage medium and apparatus embodiments above is similar to that of the method embodiments described above, with similar benefits as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and the apparatus of the present invention, please refer to the description of the method embodiments of the present invention.
It should be noted that fig. 6 is a schematic diagram of a hardware entity of a base station in an embodiment of the present invention, as shown in fig. 6, the hardware entity of the base station 600 includes: a processor 601, a communication interface 602 and a memory 603, wherein
The processor 601 generally controls the overall operation of the base station 600.
The communication interface 602 may enable a base station to communicate with other terminals or servers over a network.
The memory 603 is configured to store instructions and applications executable by the processor 601, and may also cache data (e.g., image data, audio data, voice communication data, and video communication data) to be processed or processed by each module in the processor 601 and the base station 600, which may be implemented by a FLASH memory (FLASH) or a random access memory (Random Access Memory, RAM).
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present invention. The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of the units is only one logical function division, and there may be other divisions in practice, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units; can be located in one place or distributed to a plurality of 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.
In addition, each functional unit in each embodiment of the present invention may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read Only Memory (ROM), a magnetic disk or an optical disk, or the like, which can store program codes.
Alternatively, the above-described integrated units of the present invention may be stored in a computer-readable storage medium if implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied essentially or in part contributing to the prior art in the form of a software product stored in a storage medium, comprising several instructions for causing a base station to perform all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a removable storage device, a ROM, a magnetic disk, or an optical disk.
The foregoing is merely an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present invention, and the changes and substitutions are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. A method of determining backoff time, the method comprising:
when the physical random access channel is congested, the base station determines the service type of the terminal;
the base station determines a time interval or a backoff time of the backoff access corresponding to the terminal according to the service type of the terminal;
the base station sends the time interval or the rollback time of the rollback access to the terminal;
the base station determines the service type of the terminal, and comprises the following steps:
the base station determines the service type of the terminal according to the service type field in the random access message sent by the terminal; or,
the base station determines the service type of the terminal according to the resource position occupied by the terminal for sending the random access message; or,
and the base station determines the service type of the terminal according to the current time period of the current time and the service type of the historical online terminal.
2. The method of claim 1, wherein the base station determining the traffic type of the terminal based on the current time period to which the current time belongs and the traffic type of the historical online terminal, comprises:
the base station predicts the service type of the terminal initiating random access in the current period based on the service type of the historical online terminal;
the base station determines the predicted service type as the service type of the terminal.
3. The method of claim 2, wherein the base station predicting the traffic type of the terminal initiating random access during the current period based on the traffic type of the historical online terminal comprises:
the base station queries a first preset relation table according to the current time period to obtain access probabilities corresponding to different service types in the current time period in history; the first preset relation table is used for representing the mapping relation among the service type, the access probability and the current time period of the historical online terminal;
and the base station determines the service type of the terminal according to the service type of which the access probability is larger than a first threshold value in the first preset relation table.
4. The method of claim 3, wherein the base station predicts the traffic type of the terminal initiating random access during the current period based on the traffic type of the historical online terminal, further comprising:
if the access probability is greater than 1 service type of the first threshold, determining the service type of the terminal from the service types of which the access probability is greater than the first threshold according to the preset priorities of different service types; or,
and if the service type with the access probability larger than the first threshold value is larger than 1, determining the service type with the maximum access probability as the service type of the terminal.
5. The method according to any one of claims 1 to 4, wherein the determining, by the base station, a time interval or a backoff time of the backoff access corresponding to the terminal according to the service type of the terminal includes:
the base station queries a second preset relation table according to the service type of the terminal to obtain a time interval or a backoff time of the backoff access corresponding to the terminal, wherein the second preset relation table is used for representing that the service type of different terminals corresponds to different time intervals of the backoff access, or the second preset relation table is used for representing that the service type of different terminals corresponds to different backoff times.
6. The method of claim 5, wherein in the second preset relationship table, a time interval of the fallback access corresponding to the delay-sensitive service type is smaller than a time interval of the fallback access corresponding to the delay-insensitive service type; or, in the second preset relation table, the rollback time corresponding to the service type sensitive to the time delay is smaller than the rollback time corresponding to the service type insensitive to the time delay;
the time delay sensitive service types at least comprise mobile point-of-sale machine service and bicycle service, and the time delay insensitive service types at least comprise meter reading service.
7. The method of claim 5, wherein forming the second predetermined relationship table comprises:
the base station forms a second preset relation table based on the service type of the historical online terminal, the time when the historical online terminal accesses the network and the number of the terminals in different time periods.
8. The method of claim 7, wherein the method further comprises:
in the process that each terminal is accessed to a network, the base station correspondingly identifies the service type of each terminal based on the message uploaded by each terminal, and the service type of the historical online terminal is obtained; or the base station receives the service types of all terminals sent by the core network to obtain the service types of the historical online terminals.
9. The method according to any of claims 1 to 4, wherein the base station transmitting the time interval of the fallback access to the terminal comprises: and the base station sends the time interval or the backoff time of the backoff access to the terminal through MSG 2.
10. An apparatus for determining backoff time, comprising:
a first determining unit, configured to determine, when the physical random access channel is congested, a service type of the terminal by the base station;
a second determining unit, configured to determine a time interval or a backoff time of the backoff access corresponding to the terminal according to the service type of the terminal;
a sending unit, configured to send the time interval or the backoff time of the backoff access to the terminal;
the first determining unit is specifically configured to:
determining the service type of the terminal according to the service type field in the random access message sent by the terminal; or,
determining the service type of the terminal according to the resource position occupied by the terminal for sending the random access message; or,
and determining the service type of the terminal according to the current time period to which the current time belongs and the service type of the historical online terminal.
11. A base station comprising a memory and a processor, the memory storing a computer program executable on the processor, characterized in that the processor, when executing the program, implements the steps of the method of determining backoff time of any of claims 1 to 9.
12. A computer readable storage medium having stored thereon a computer program, characterized in that the computer program, when being executed by a processor, realizes the steps in the method of determining a backoff time as claimed in any of claims 1 to 9.
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| CN113038585B (en) * | 2019-12-24 | 2022-01-25 | 上海朗帛通信技术有限公司 | Method and apparatus in a node used for wireless communication |
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| CN102291822B (en) * | 2010-06-21 | 2015-08-12 | 中兴通讯股份有限公司 | A kind of MTC device random access backoff time announcement method and system |
| CN102378364B (en) * | 2010-08-24 | 2014-12-10 | 中兴通讯股份有限公司 | Random access method and system realizing same |
| CN103167624B (en) * | 2011-12-14 | 2015-09-30 | 电信科学技术研究院 | Accidental access method in a kind of cognitive radio system and equipment |
| CN105723793B (en) * | 2013-02-07 | 2019-10-18 | 华为技术有限公司 | A kind of method and apparatus of random access |
| WO2014190467A1 (en) * | 2013-05-27 | 2014-12-04 | 华为技术有限公司 | Access control method, user equipment, and radio network controller |
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