CN109041255B - Access method and UE - Google Patents
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- CN109041255B CN109041255B CN201811106868.4A CN201811106868A CN109041255B CN 109041255 B CN109041255 B CN 109041255B CN 201811106868 A CN201811106868 A CN 201811106868A CN 109041255 B CN109041255 B CN 109041255B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
Abstract
The embodiment of the invention provides an access method and UE, relates to the technical field of communication, and solves the problem of low utilization rate of channel resources in the prior art. The method comprises the steps that the UE receives state information sent by a base station; the state information at least comprises access control parameters and RSRP values, and the access control parameters comprise access control factors; the UE determines the coverage level of the current position according to the RSRP value; the UE determines whether to send an access request to the base station according to the uniformly distributed random numbers and the access control factors corresponding to the coverage grades; and when the UE determines that the uniformly distributed random number is smaller than the access control factor, the UE sends an access request to the base station. The embodiment of the invention is used for manufacturing the UE.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an access method and a UE.
Background
The existing Access control technology used by the Narrow-Band Internet of Things (NB-IoT) continues to use the Extended Access restriction (EAB) of the Long Term Evolution (LTE) system; wherein, NB-IoT defines three Coverage Enhancement levels (CE Level for short). CE Level0, CE Level1 and CE Level 2 correspond to the coverage of 144dB, 154dB and 164dB of Minimum Coupling Loss (MCL for short). Aiming at different coverage requirements, a base station configures Narrowband Physical Random Access Channel (NPRACH) resources according to different coverage grades, and each coverage grade defines a corresponding NPRACH period (NPRACH-Periodicity), subcarrier number (NPRACH-Num Subcarriers), NPRACH repetition number and the like. NPRACH resource configuration for three coverage levels is shown in fig. 1.
When a terminal device (User Equipment, abbreviated as UE) initiates an access request to a base station in different coverage areas of the base station, if the access fails, the terminal device needs to send the access request to the base station again, and the UE always occupies a channel resource during a period of waiting for the access; when the residual channel resources of the base station are more, even if a plurality of UE (user equipment) cannot access the base station, other users cannot be influenced to continuously initiate an access request; when the remaining channel resources of the base station are less and the number of UEs waiting for access is more, there is a problem that other users cannot acquire the channel resources, which results in poor user experience.
From the above, how to improve the utilization rate of the channel resources becomes a problem to be solved urgently.
Disclosure of Invention
Embodiments of the present invention provide an access method and a UE, which solve the problem of a low utilization rate of channel resources in the prior art.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides an access method, including: the UE receives an RSRP value sent by a base station; the UE determines the coverage level of the current position according to the RSRP value; UE determines that the randomly generated uniformly distributed random number rand is smaller than an access control factor F corresponding to the coverage gradeiThen, an access request is sent to the base stationSolving; wherein the uniformly distributed random numbers are greater than 0 and less than 1,
Linumber of access users per unit time, T, representing coverage leveliNPRACH period, N, indicating coverage leveliIndicating the number of subcarriers of the coverage class.
According to the scheme, by the access method provided by the embodiment of the invention, when the UE determines that the randomly generated uniformly distributed random number is smaller than the access control factor corresponding to the coverage grade, the UE sends the access request to the base station; therefore, the number of the UE initiating the access request at the same time is reduced, namely the number of the UE waiting for access is reduced, and the utilization rate of channel resources is improved; the problem of lower utilization ratio of channel resource among the prior art is solved.
Optionally, the method further includes: UE determines that the uniformly distributed random number rand is greater than or equal to an access control factor FiTime delay access control limit time DiThen, sending an access request to the base station; wherein D isi＝K×TiAnd K is a positive integer.
Optionally, the determining, by the UE, the current coverage level according to the RSRP value includes: when the UE determines that the RSRP value is larger than the first RSRP threshold value, the coverage level where the UE is located is determined to be a first coverage level; when the UE determines that the RSRP value is larger than the second RSRP threshold value and the RSRP value is smaller than or equal to the first RSRP threshold value, the coverage level where the UE is located is determined to be the second coverage level; when the UE determines that the RSRP value is smaller than or the level of the second RSRP threshold value, the coverage level where the UE is located is determined to be a third coverage level; wherein the second RSRP threshold is less than the first RSRP threshold.
Optionally, the method further includes: receiving the number L of access users in unit time corresponding to each coverage grade sent by the base stationiNPRACH period TiAnd the number of subcarriers Ni(ii) a According to the number L of access users in unit time corresponding to each coverage gradeiNPRACH period TiAnd the number of subcarriers NiDetermining the access control factor F corresponding to each coverage gradei(ii) a NPRACH period T corresponding to each coverage gradeiDetermining a delayed access control limit time Di。
Optionally, the method further includes: receiving an access control factor F corresponding to each coverage grade sent by a base stationiAnd a delayed access control limit time Di(ii) a Wherein, the access control factor FiThe base station accesses the user number L in unit time according to each coverage gradeiNPRACH period TiAnd the number of subcarriers NiDetermined, delayed access control limit time DiNPRACH period T corresponding to each coverage grade for base stationiAnd (4) determining.
In a second aspect, an embodiment of the present invention provides a UE, including: the receiving unit is used for receiving the RSRP value sent by the base station; the processing unit is used for determining the current coverage level according to the RSRP value received by the receiving unit; a sending unit for the processing unit to determine that the randomly generated uniformly distributed random number rand is smaller than the access control factor FiThen, sending an access request to a base station; wherein the uniformly distributed random numbers are greater than 0 and less than 1,
Lidenotes the number of access users per unit time of the coverage class, Ti denotes the NPRACH period of the coverage class, NiIndicating the number of subcarriers of the coverage class.
Optionally, the sending unit is further configured to determine, by the processing unit, that the uniformly distributed random number rand is greater than or equal to the access control factor FiTime delay access control limit time DiThen, sending an access request to the base station; wherein D isi＝K×TiAnd K is a positive integer.
Optionally, the processing unit is specifically configured to determine that the coverage level currently located is the first coverage level when it is determined that the RSRP value received by the receiving unit is greater than the first RSRP threshold; the processing unit is specifically configured to determine that the RSRP value received by the receiving unit is greater than the second RSRP threshold, and when the RSRP value received by the receiving unit is less than or equal to the first RSRP threshold, determine that the coverage level currently located is the second coverage level; the processing unit is specifically configured to determine that the coverage level at which the receiving unit is currently located is a third coverage level when the RSRP value received by the receiving unit is determined to be smaller than or equal to the second RSRP threshold; wherein the second RSRP threshold is less than the first RSRP threshold.
Optionally, the receiving unit is further configured to receive the number L of access users in unit time corresponding to each coverage class sent by the base stationiNPRACH period TiAnd the number of subcarriers Ni(ii) a A processing unit, further used for receiving the access user number L in unit time corresponding to each coverage grade received by the receiving unitiNPRACH period TiAnd the number of subcarriers NiDetermining the access control factor F corresponding to each coverage gradei(ii) a A processing unit for further processing the NPRACH period T corresponding to each coverage grade received by the receiving unitiDetermining a delayed access control limit time Di。
Optionally, the receiving unit is further configured to receive an access control factor F corresponding to each coverage class sent by the base stationiAnd a delayed access control limit time Di(ii) a Wherein, the access control factor FiThe base station accesses the user number L in unit time according to each coverage gradeiNPRACH period TiAnd the number of subcarriers NiDetermined, delayed access control limit time DiNPRACH period T corresponding to each coverage grade for base stationiAnd (4) determining.
A third aspect, an embodiment of the present invention provides a computer storage medium, which includes instructions, when executed on a computer, cause the computer to execute the access method according to any one of the above-mentioned first aspect.
In a fourth aspect, an embodiment of the present invention provides a UE, including: communication interface, processor, memory, bus; the memory is used for storing computer-executable instructions, the processor is connected with the memory through the bus, and when the UE runs, the processor executes the computer-executable instructions stored in the memory, so that the UE can execute the access method provided by any one of the above first aspects.
It can be understood that any UE provided above is configured to perform the method corresponding to the first aspect provided above, and therefore, the beneficial effects that can be achieved by the UE refer to the method of the first aspect above and the beneficial effects of the solutions in the following detailed description, which are not described herein again.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of NPRACH resource configuration under three coverage levels in the prior art;
fig. 2 is a flowchart illustrating an access method according to an embodiment of the present invention;
fig. 3 is a second flowchart of an access method according to an embodiment of the present invention;
fig. 4 is a third schematic flow chart of an access method according to an embodiment of the present invention;
fig. 5 is a fourth schematic flowchart of an access method according to an embodiment of the present invention;
fig. 6 is a fifth flowchart illustrating an access method according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a UE according to an embodiment of the present invention;
fig. 8 is a second schematic structural diagram of a UE according to an embodiment of the present invention.
Reference numerals:
UE-10；
a receiving unit-101; a processing unit-102; and a sending unit-103.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For the convenience of clearly describing the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first", "second", and the like are used for distinguishing the same items or similar items with basically the same functions and actions, and those skilled in the art can understand that the words "first", "second", and the like are not limited in number or execution order.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
In the description of the embodiments of the present invention, the meaning of "a plurality" means two or more unless otherwise specified. For example, a plurality of networks refers to two or more networks.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The symbol "/" herein denotes a relationship in which the associated object is or, for example, a/B denotes a or B.
The UE in the embodiment of the invention can be an intelligent mobile terminal. The intelligent mobile terminal is a mobile terminal with an operating system. The intelligent mobile terminal can be: the smart mobile terminal may be a smart mobile terminal of another type, and the embodiment of the present invention is not limited specifically to the following embodiments.
In the prior art, in the process of establishing connection between UE and a base station, if the UE fails to access the base station at the current moment, the UE continues to initiate an access request to the base station at the next moment; in the process of waiting for access, the UE always occupies channel resources; to solve the above problem, an embodiment of the present invention provides an access method, which is specifically implemented as follows:
example one
An embodiment of the present invention provides an access method, as shown in fig. 2, including:
s101, the UE receives the RSRP value sent by the base station.
Optionally, as shown in fig. 3 and fig. 6, the method further includes:
s104, receiving the number L of access users in unit time corresponding to each coverage grade sent by the base stationiNPRACH period TiAnd the number of subcarriers Ni。
In practical applications, it is assumed that CE Level i includes 3 coverage levels, which are CE Level0, CE Level1 and CE Level 2(i belongs to [0, 1, 2 ])]) Then, the number L of access users in unit time corresponding to each coverage leveliNPRACH period Ti(unit is: second) and the number of subcarriers NiThe method comprises the following steps:
when i is 0, the number L of access users in a unit time under CE Level00NPRACH period T0And the number of subcarriers N0。
When i is 1, the number L of access users in a unit time under CE Level11NPRACH period T1And the number of subcarriers N1。
When i is 2, the number L of access users in a unit time under CE Level 22NPRACH period T2And the number of subcarriers N2。
S105, according to the number L of access users in unit time corresponding to each coverage gradeiNPRACH period TiAnd the number of subcarriers NiDetermining the corresponding connections for each coverage levelInto the control factor Fi。
S106, NPRACH period T corresponding to each coverage gradeiDetermining a delayed access control limit time Di。
In practical applications, the UE determines the number L of access users per unit time corresponding to each coverage level transmitted by the base stationiNPRACH period TiAnd the number of subcarriers NiWhether the access request can be generated to the base station can be judged more accurately.
Optionally, as shown in fig. 4 and fig. 6, the method further includes:
s107, receiving access control factors F corresponding to each coverage grade sent by the base stationiAnd a delayed access control limit time Di(ii) a Wherein, the access control factor FiThe base station accesses the user number L in unit time according to each coverage gradeiNPRACH period TiAnd the number of subcarriers NiDetermined, delayed access control limit time DiNPRACH period T corresponding to each coverage grade for base stationiAnd (4) determining.
It should be noted that, in practical application, the UE transmits the access control factor F according to the base stationiAnd a delayed access control limit time DiAnd judging whether the access request can be generated to the base station or not without extra calculation, so that the UE can save more power.
It is assumed that CE Level i includes 3 coverage levels, CE Level0, CE Level1, and CE Level 2(i belongs to [0, 1, 2 ]]) The first RSRP Threshold value is Threshold1, and the second RSRP Threshold value is Threshold 2; the UE acquires NPRACH configuration information and access control parameters under different coverage levels from the base station broadcast information: access control factor FiAnd access control limit time Di。
And the UE judges the current coverage level CE level according to the measurement (RSRP information) of the downlink channel of the base station and the comparison result of the threshold parameter broadcasted by the base station.
If the RSRP measured by the UE is less than or equal to Threshold2, the CE level of the UE is 2.
If Threshold2 < RSRP ≦ Threshold1 measured by the UE, the CE level at which the UE is located is 1.
If the RSRP measured by the UE is greater than Threshold1, the CE level at which the UE is located is 0.
And S102, the UE determines the current coverage grade according to the RSRP value.
Optionally, the determining, by the UE, the current coverage level according to the RSRP value includes: when the UE determines that the RSRP value is larger than the first RSRP threshold value, the coverage level where the UE is located is determined to be a first coverage level; when the UE determines that the RSRP value is larger than the second RSRP threshold value and the RSRP value is smaller than or equal to the first RSRP threshold value, the coverage level where the UE is located is determined to be the second coverage level; when the UE determines that the RSRP value is smaller than or the level of the second RSRP threshold value, the coverage level where the UE is located is determined to be a third coverage level; wherein the second RSRP threshold is less than the first RSRP threshold.
UE judges whether the randomly generated uniformly distributed random number rand is smaller than the access control factor F corresponding to the coverage gradei。
S103, the UE determines that the randomly generated uniformly distributed random number rand is smaller than an access control factor F corresponding to the coverage gradeiThen, sending an access request to a base station; wherein the uniformly distributed random numbers are greater than 0 and less than 1,
Linumber of access users per unit time, T, representing coverage leveliNPRACH period, N, indicating coverage leveliIndicating the number of subcarriers of the coverage class.
Optionally, as shown in fig. 5 and 6, the method further includes:
s108, UE determines that the uniformly distributed random number rand is larger than or equal to an access control factor FiTime delay access control limit time DiThen, sending an access request to the base station; wherein D isi＝K×TiAnd K is a positive integer.
It should be noted that, when the UE sends the access request to the base station again after S108, it needs to generate the uniformly distributed random number rand again and determine the random number randWhether the formed uniformly distributed random number rand is smaller than the access control factor F corresponding to the coverage gradei(ii) a In practical application, when the UE sends an access request to the base station each time, it needs to randomly generate an evenly distributed random number rand between 0 and 1, and determines whether the UE can access according to the coverage level i and the access control factor corresponding to the coverage level i (i.e. after obtaining the coverage level where the UE is currently located again according to S101 and S102, it is determined whether the randomly generated evenly distributed random number rand is smaller than the access control factor F corresponding to the coverage leveli)。
Wherein, when rand < Fi, the UE can access.
When rand>When the Fi is in use, the UE stops sending the access request to the base station, and sends the access request to the base station again after delaying for a period of time, wherein the delay time is Di。
Since 0 ≦ rand ≦ 1, and each coverage level i corresponds to FiThe size of (c) depends on the current operating parameters of the base station; therefore, the UE can judge whether to send the registration request to the base station according to the actual operation parameters of the base station, thereby improving the utilization rate of channel resources; meanwhile, when the channel resources are less, other users can still obtain the channel resources, and the user experience is ensured; the operating parameters include at least: number of access users L in unit timeiNPRACH period TiAnd the number of subcarriers NiAny one of (1).
According to the scheme, in the process of establishing connection between the UE and the base station in the prior art, if the UE fails to access the base station at the current moment, the UE can continue to initiate an access request to the base station at the next moment; in the process of waiting for access, the UE always occupies channel resources; therefore, by the access method provided by the embodiment of the invention, when the UE determines that the randomly generated uniformly distributed random number is smaller than the access control factor corresponding to the coverage grade, the UE sends an access request to the base station; therefore, the number of the UE initiating the access request at the same time is reduced, namely the number of the UE waiting for access is reduced, and the utilization rate of channel resources is improved; the problem of lower utilization ratio of channel resource among the prior art is solved.
Example two
An embodiment of the present invention provides a UE10, as shown in fig. 7, including:
a receiving unit 101, configured to receive an RSRP value sent by a base station.
The processing unit 102 is configured to determine a coverage level currently located according to the RSRP value received by the receiving unit 101.
A sending unit 103, configured to the processing unit 102 to determine that the randomly generated uniformly distributed random number rand is smaller than the access control factor FiThen, sending an access request to a base station; wherein the uniformly distributed random numbers are greater than 0 and less than 1,
Lidenotes the number of access users per unit time of the coverage class, Ti denotes the NPRACH period of the coverage class, NiIndicating the number of subcarriers of the coverage class.
Optionally, the sending unit 103 is further configured to determine, by the processing unit 102, that the uniformly distributed random number rand is greater than or equal to the access control factor FiTime delay access control limit time DiThen, sending an access request to the base station; wherein D isi＝K×TiAnd K is a positive integer.
Optionally, the processing unit 102 is specifically configured to determine that the coverage level currently located is the first coverage level when it is determined that the RSRP value received by the receiving unit 101 is greater than the first RSRP threshold; the processing unit 102 is specifically configured to determine that the RSRP value received by the receiving unit 101 is greater than the second RSRP threshold, and when the RSRP value received by the receiving unit 101 is less than or equal to the first RSRP threshold, determine that the coverage level currently located is the second coverage level; the processing unit 102 is specifically configured to determine that the coverage level currently located is a third coverage level when the RSRP value received by the receiving unit 101 is smaller than or equal to the second RSRP threshold; wherein the second RSRP threshold is less than the first RSRP threshold.
Optionally, the receiving unit 101 is further configured to receive the number L of access users in unit time corresponding to each coverage level sent by the base stationiNPRACH period TiAnd the number of subcarriers Ni(ii) a Processing unit102, and is further configured to use the number L of access users in the unit time corresponding to each coverage level received by the receiving unit 101iNPRACH period TiAnd the number of subcarriers NiDetermining the access control factor F corresponding to each coverage gradei(ii) a A processing unit 102, further configured to determine a NPRACH period T corresponding to each coverage level received by the receiving unit 101iDetermining a delayed access control limit time Di。
Optionally, the receiving unit 101 is further configured to receive an access control factor F corresponding to each coverage class sent by the base stationiAnd a delayed access control limit time Di(ii) a Wherein, the access control factor FiThe base station accesses the user number L in unit time according to each coverage gradeiNPRACH period TiAnd the number of subcarriers NiDetermined, delayed access control limit time DiNPRACH period T corresponding to each coverage grade for base stationiAnd (4) determining.
All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and the function thereof is not described herein again.
In case of employing integrated modules, the UE comprises: the device comprises a receiving unit, a processing unit, a sending unit and a storage unit. The processing unit is configured to control and manage the actions of the UE, for example, the processing unit is configured to support the UE to execute the processes S101, S102, and S103 in fig. 2; the receiving unit and the sending unit are both used for supporting information interaction between the UE and other equipment. A storage unit for storing program codes and data of the UE.
The processing unit is taken as a processor, the storage unit is taken as a memory, and the receiving unit and the sending unit are taken as communication interfaces. The UE shown in fig. 8 includes a communication interface 501, a processor 502, a memory 503, and a bus 504, and the communication interface 501 and the processor 502 are connected to the memory 503 through the bus 504.
The processor 502 may be a general-purpose Central Processing Unit (CPU), a microprocessor, an Application-Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to control the execution of programs in accordance with the teachings of the present disclosure.
The Memory 503 may be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to these. The memory may be self-contained and coupled to the processor via a bus. The memory may also be integral to the processor.
The memory 503 is used for storing application program codes for executing the scheme of the application, and the processor 502 controls the execution. The communication interface 501 is used for information interaction with other devices, such as a remote controller. The processor 502 is configured to execute application program code stored in the memory 503 to implement the methods described in the embodiments of the present application.
Further, a computing storage medium (or media) is also provided, comprising instructions which, when executed, perform the method operations performed by the UE in the above embodiments. Additionally, a computer program product is also provided, comprising the above-described computing storage medium (or media).
It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to 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 Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It can be understood that any UE provided above is configured to execute the method corresponding to the embodiment provided above, and therefore, the beneficial effects that can be achieved by the UE refer to the method of the first embodiment above and the beneficial effects of the corresponding schemes in the following detailed description, which are not described herein again.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. An access method, comprising:
the UE receives an RSRP value sent by a base station;
the UE determines the current coverage grade according to the RSRP value;
the UE determines that the randomly generated uniformly distributed random number rand is smaller than an access control factor F corresponding to the coverage gradeiThen, sending an access request to the base station; wherein the uniformly distributed random number is greater than 0 and less than 1,
Liindicating the number of access users per unit time, T, of said coverage leveliNPRACH period, N, representing the coverage leveliThe number of subcarriers representing the coverage grade;
the method further comprises the following steps: the UE determines that the uniformly distributed random number rand is greater than or equal to the access control factor FiTime delay access control limit time DiThen, sending an access request to the base station; wherein D isi＝K×TiAnd K is a positive integer.
2. The access method of claim 1, wherein the UE determines the current coverage level according to the RSRP value, comprising:
when the UE determines that the RSRP value is larger than a first RSRP threshold value, the coverage level where the UE is located is determined to be a first coverage level;
when the UE determines that the RSRP value is larger than a second RSRP threshold value and the RSRP value is smaller than or equal to the first RSRP threshold value, determining that the coverage level where the UE is located is a second coverage level;
when the UE determines that the RSRP value is smaller than or grades the second RSRP threshold value, determining that the coverage grade at present is a third coverage grade; wherein the second RSRP threshold is less than the first RSRP threshold.
3. The access method according to claim 1, wherein the method further comprises:
receiving the number L of access users in unit time corresponding to each coverage grade sent by the base stationiNPRACH period TiAnd the number of subcarriers Ni；
According to the number L of the access users in the unit time corresponding to each coverage gradeiNPRACH period TiAnd the number of subcarriers NiDetermining the access control factor F corresponding to each coverage gradei；
According to whatThe NPRACH period T corresponding to each coverage gradeiDetermining a delayed access control limit time Di。
4. The access method according to claim 1, wherein the method further comprises:
receiving an access control factor F corresponding to each coverage grade sent by the base stationiAnd a delayed access control limit time Di(ii) a Wherein the access control factor FiThe base station is provided with the access user number L in the unit time corresponding to each coverage gradeiNPRACH period TiAnd the number of subcarriers NiDetermined, said delayed access control limiting time DiThe base station corresponds to the NPRACH period T according to each coverage gradeiAnd (4) determining.
5. A UE, comprising:
the receiving unit is used for receiving the RSRP value sent by the base station;
the processing unit is used for determining the coverage level of the current position according to the RSRP value received by the receiving unit;
a sending unit for the processing unit to determine that the randomly generated uniformly distributed random number rand is smaller than the access control factor FiThen, sending an access request to the base station; wherein the uniformly distributed random number is greater than 0 and less than 1,
Liindicating the number of access users per unit time, T, of said coverage leveliNPRACH period, N, representing the coverage leveliThe number of subcarriers representing the coverage grade;
the sending unit is further configured to determine, by the processing unit, that the uniformly distributed random number rand is greater than or equal to the access control factor FiTime delay access control limit time DiThen, sending an access request to the base station; wherein D isi＝K×TiK isA positive integer.
6. The UE according to claim 5, wherein the processing unit is specifically configured to determine that the coverage level currently located is the first coverage level when determining that the RSRP value received by the receiving unit is greater than the first RSRP threshold;
the processing unit is specifically configured to determine that the RSRP value received by the receiving unit is greater than a second RSRP threshold, and when the RSRP value received by the receiving unit is less than or equal to the first RSRP threshold, determine that the coverage level currently located is a second coverage level;
the processing unit is specifically configured to determine that the coverage level currently located is a third coverage level when the RSRP value received by the receiving unit is determined to be smaller than or equal to the second RSRP threshold; wherein the second RSRP threshold is less than the first RSRP threshold.
7. The UE of claim 5, wherein the receiving unit is further configured to receive a number L of access users per unit time corresponding to each coverage level sent by the base stationiNPRACH period TiAnd the number of subcarriers Ni；
The processing unit is further configured to determine, according to the number L of access users in the unit time corresponding to each coverage level received by the receiving unitiNPRACH period TiAnd the number of subcarriers NiDetermining the access control factor F corresponding to each coverage gradei；
The processing unit is further configured to determine a NPRACH period T corresponding to each coverage class received by the receiving unitiDetermining a delayed access control limit time Di。
8. The UE of claim 5, wherein the receiving unit is further configured to receive an access control factor F corresponding to each coverage class sent by the base stationiAnd a delayed access control limit time Di(ii) a Wherein the access controlFactor FiThe base station is provided with the access user number L in the unit time corresponding to each coverage gradeiNPRACH period TiAnd the number of subcarriers NiDetermined, said delayed access control limiting time DiThe base station corresponds to the NPRACH period T according to each coverage gradeiAnd (4) determining.
9. A computer storage medium comprising instructions which, when run on a computer, cause the computer to perform the access method of any of claims 1-4 above.
10. A UE, comprising: communication interface, processor, memory, bus; the memory is used for storing computer-executable instructions, the processor is connected with the memory through the bus, and when the UE runs, the processor executes the computer-executable instructions stored in the memory so as to enable the UE to execute the access method according to any one of the claims 1-4.
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| WO2020220350A1 (en) * | 2019-04-30 | 2020-11-05 | 华为技术有限公司 | Communication method and device |
| CN110234151B (en) * | 2019-05-05 | 2021-03-12 | 中国联合网络通信集团有限公司 | Terminal access method and device |
| CN112752241B (en) * | 2019-10-31 | 2022-11-11 | 成都鼎桥通信技术有限公司 | Method and device for switching overlay mode of eMTC terminal |
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