CN113543355A - Method and device for controlling random access of user - Google Patents

Method and device for controlling random access of user Download PDF

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Publication number
CN113543355A
CN113543355A CN202010301108.XA CN202010301108A CN113543355A CN 113543355 A CN113543355 A CN 113543355A CN 202010301108 A CN202010301108 A CN 202010301108A CN 113543355 A CN113543355 A CN 113543355A
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value
service
random access
terminal
evaluation
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CN113543355B (en
Inventor
邓也
谭裴
古莉姗
孙鉴
胡勇
朱亮
陈一伟
肖霏
牛春
许伟东
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China Mobile Communications Group Co Ltd
China Mobile Group Design Institute Co Ltd
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China Mobile Communications Group Co Ltd
China Mobile Group Design Institute Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a control method and a device for user random access, which determine an evaluation field intensity value when a terminal initiates a service according to an evaluation value in an acquired cell system message; and if the terminal is judged to be in a weak field environment according to the field intensity evaluation value during service initiation, determining a first random access allowable duration according to a first timer value and a first timer compensation value in the acquired cell system message. In this embodiment, the duration of the random access process allowed by the RRC layer in the terminal weak field scenario is determined by the first timer T300 value and the first timer offset value, so that the duration of the first timer T300 is increased, the success rate of initiating the terminal service is increased, and the user sensing capability is improved.

Description

Method and device for controlling random access of user
Technical Field
The invention relates to the field of mobile communication, in particular to a method and a device for controlling user random access.
Background
In the mobile communication process, when a terminal (UE) is in an idle state to a service state, the random access can be completed according with the regulation of a T300 timer.
Fig. 1 is a first illustration of the existing random access part information of the idle-state terminal initiated service, and fig. 2 is a second illustration of the existing random access part information of the idle-state terminal initiated service, as shown in fig. 1 and 2, the occurrence of the random access procedure strictly controls the random access allowed duration according to the random transmission power parameter (PowerRampingParameters) in the cell system message (SIB2) and the timer T300 in the UE timer and counter (UE-timers).
When the UE initiates a service in an idle state, a random access Message (MSG)3 is sent, that is, when the UE sends a request for establishing radio resource control connection (RRCConnectionRequest), a timer T300 is started. Before timeout, the timer is stopped if a radio resource control connection setup message (RRCConnectionSetup) is received or a radio resource control connection setup message (RRCConnectionReject) is rejected. After the timer expires, the UE enters an IDLE state (RRC _ IDLE).
From the UE perspective, the random access procedure may suffer from the following problems resulting in random access failure: the UE does not receive a re-authorization request (RAR) corresponding to a random access preamble (preamble) sent by the UE, wherein the re-authorization request (RAR) comprises that a RAR media access control layer protocol data unit (MAC PDU) is not received, or a RAR corresponding to the preamble is not in the received RAR MAC PDU; the UE sent Msg3 but did not receive Msg 4; the UE received Msg4, but the UE was not the winner of the conflict resolution.
If a certain random access fails, the UE can reinitiate the random access. When the number of preambles transmitted by the UE exceeds the maximum transmission number (preamble transmax), the protocol requires the MAC layer to transmit a random access problem indication (random access problem indication) to an upper layer, usually the radio resource control layer (RRC layer), but the MAC layer does not stop transmitting the preambles. That is, the MAC layer is designed to transmit the preamble "endlessly", and how to process the preamble number transmitted by the UE exceeding the preamble transmax "is determined by the RRC layer.
That is, the MAC layer sends the preamble "on the fly" in anticipation of successful cell access, whichever occurs as described above.
After receiving random access notification of the MAC layer, the behavior of the RRC layer depends on a scenario triggering random access, and when the scenario triggering random access is an initial RRC connection establishment scenario. At this time, the UE is controlled by the RRC timer T300, and when the timer expires (i.e., RRC connection establishment fails), the RRC layer of the UE stops the random access procedure (at this time, the MAC is reset, the MAC configuration is released, and the MAC is reset to stop the ongoing random access procedure), and notifies the upper layer of the RRC connection establishment failure.
The initial random access process of the existing terminal from idle state to service state is strictly specified according to the T300 timer. Once the random access cannot be completed within the T300 timer, the terminal enters an idle state. In the prior art, a signal environment of a terminal when random access occurs is not considered, a T300 timer is configured uniformly, and all terminals need to complete a random access process in the T300 timer. There is a possibility that some weak field terminals cannot complete the random access procedure within the T300 timer.
Therefore, how to achieve the purpose of enabling weak field users to obtain more random access opportunities to improve the random access success rate of the users so as to improve the user perception becomes a problem to be solved urgently.
Disclosure of Invention
Aiming at the defects in the prior art, the embodiment of the invention provides a method and a device for controlling user random access.
In a first aspect, an embodiment of the present invention provides a method for controlling random access of a user, including:
determining an evaluation field intensity value when a terminal initiates a service according to the obtained evaluation value in the cell system message;
and if the terminal is judged to be in a weak field environment according to the field intensity evaluation value during service initiation, determining a first random access allowable duration according to a first timer value and a first timer compensation value in the acquired cell system message.
Optionally, the determining, according to the obtained evaluation value in the cell system message, the evaluation field strength value when the terminal initiates a service includes:
if the stored measurement sample value of the service initiating cell is smaller than the evaluation value, determining the evaluation field intensity value as the average value of the available measurement levels when the terminal initiates the service;
and if the stored measurement sample value of the service initiating cell is greater than the evaluation value, determining that the evaluation field intensity value when the terminal initiates the service is the average value of the measurement levels of the evaluation values.
Optionally, the determining that the terminal is in the weak field environment according to the field intensity evaluation value when the service is initiated includes:
and if the estimated field intensity value is lower than the acquired reference signal intensity value in the cell system message when the service is initiated, judging that the terminal is in the weak field environment.
Optionally, the method further comprises:
and if the terminal is judged to be in a normal environment according to the field intensity evaluation value during service initiation, determining a second random access allowable time length according to the acquired first timer value in the cell system message.
Optionally, the determining that the terminal is in the normal environment according to the field intensity evaluation value during service initiation includes:
and if the estimated field intensity value is higher than the acquired reference signal intensity value in the cell system message when the service is initiated, judging that the terminal is in the normal environment.
Optionally, the determining a first random access allowed duration according to the acquired first timer value and the first timer offset value in the cell system message includes:
according to the formula T ═ TT300*(1+TT300offset) Determining the first random access allowable duration;
wherein T represents the first random access allowed time length, TT300Indicating the first timer value, T, in the acquired cell system messageT300offsetRepresenting the acquired first timer offset value in the cell system message.
In a second aspect, an embodiment of the present invention provides a device for controlling random access of a user, including:
the first processing module is used for determining an evaluation field intensity value when the terminal initiates a service according to the evaluation value in the acquired cell system message;
and the second processing module is used for determining a first random access allowable duration according to the acquired first timer value and the first timer compensation value in the cell system message if the terminal is judged to be in the weak field environment according to the field evaluation value during service initiation.
Optionally, the determining, according to the obtained evaluation value in the cell system message, the evaluation field strength value when the terminal initiates a service includes:
if the stored measurement sample value of the service initiating cell is smaller than the evaluation value, determining the evaluation field intensity value as the average value of the available measurement levels when the terminal initiates the service;
and if the stored measurement sample value of the service initiating cell is greater than the evaluation value, determining that the evaluation field intensity value when the terminal initiates the service is the average value of the measurement levels of the evaluation values.
Third aspect an embodiment of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method for controlling random access of a user described in any one of the above when executing the program.
A fourth aspect of the present invention provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the method for controlling random access for a user as described in any one of the above.
In this embodiment, the duration of the random access process allowed by the RRC layer in the terminal weak field scenario is determined by the first timer T300 value and the first timer offset value, so that the duration of the first timer T300 is increased, the success rate of initiating the terminal service is increased, and the user sensing capability is improved.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a first diagram showing information of a random access part of an idle terminal initiated service in the prior art;
fig. 2 is a second illustration of information of a random access part of an idle terminal initiated service in the prior art;
fig. 3 is a flowchart illustrating a method for controlling random access of a user according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a first part of information of measurement and evaluation of a primary serving cell according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a second part of information of measurement and evaluation of a primary serving cell according to an embodiment of the present invention;
fig. 6 is a schematic diagram of DRX cycle measurement main server field strength provided in an embodiment of the present invention;
fig. 7 is a flowchart illustrating a method for controlling random access of another user according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a control apparatus for user random access according to an embodiment of the present invention;
fig. 9 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
Fig. 3 is a schematic flowchart of a method for controlling random access of a user according to an embodiment of the present invention, and as shown in fig. 3, the method includes:
s301: and determining an evaluation field strength value when the terminal initiates a service according to the evaluation value in the acquired cell system message.
Wherein the cell system message (SBI2) is actual system information containing inner area division information and UE timer in the communication system.
The evaluation value (AssessN) is a threshold value of the number of times of evaluation of the environment level in which the terminal is located.
And the evaluation field intensity value is an evaluation value of the environment level of the terminal.
S302: and if the terminal is judged to be in a weak field environment according to the field intensity evaluation value during service initiation, determining a first random access allowable duration according to a first timer value and a first timer compensation value in the acquired cell system message.
The weak field environment is a low level scene that the self idle state service cell measures the low level scene that the average value is lower than the weak field signal strength threshold value sent by the base station side.
The first timer value is the first timer T300 value in the cell system message.
The first timer offset value is a first timer offset T300offset value in a cell system message.
And the first random access allowable duration is the duration of the random access process allowed by the RRC layer determined according to the first timer value and the first timer compensation value under the weak field environment.
Specifically, after receiving a cell system message SIB2, the terminal obtains configuration of newly added AssessN and T300offset parameters, the old terminal of the existing network storage network cannot understand that the AssessN and T300offset parameters still take effect according to previous parameter settings, the new terminal of the existing network storage network performs measurement and evaluation according to new parameters after receiving the AssessN and T300offset parameters, and according to the issued AssessN values, integrates the latest continuous AssessN service-initiating cell measurement sample values of the terminal, determines the environmental level where the terminal is located, and determines the evaluation field strength value.
And if the estimated field intensity value belongs to the weak field environment value, determining the time length of the RRC layer of the terminal in the process of allowing random access according to the acquired first timer T300 value and the first timer offset value compensated by the first timer in the cell system message. In detail, at this time, the UE is controlled by the RRC layer first timer T300 value and the first timer offset T300offset value, the duration of the first timer T300 is increased, when the timer is overtime (i.e., the RRC connection establishment fails), the RRC layer of the UE stops the random access process, at this time, the MAC is reset, the MAC configuration is released, the reset MAC stops the ongoing random access process, and the upper layer is notified that the RRC connection establishment fails. Under a weak field scene, the duration of the first timer T300 is properly increased, so that the success rate of initiating the terminal service can be increased, and the user perception is improved.
In this embodiment, the duration of the random access process allowed by the RRC layer in the terminal weak field scenario is determined by the first timer T300 value and the first timer offset value, so that the duration of the first timer T300 is increased, the success rate of initiating the terminal service is increased, and the user sensing capability is improved.
Further, on the basis of the above embodiment of the present invention, the determining, according to the evaluation value in the acquired cell system message, the evaluation field strength value when the terminal initiates a service includes:
if the stored measurement sample value of the service initiating cell is smaller than the evaluation value, determining the evaluation field intensity value as the average value of the available measurement levels when the terminal initiates the service;
and if the stored measurement sample value of the service initiating cell is greater than the evaluation value, determining that the evaluation field intensity value when the terminal initiates the service is the average value of the measurement levels of the evaluation values.
Wherein, the stored measurement sample value of the service initiating cell is the latest available times of the discontinuous reception DRX period measurement main service field intensity.
Specifically, the terminal measures and evaluates a primary carrier frequency (primary serving cell) at least once per Discontinuous Reception (DRX) cycle in an IDLE state. Measuring and recording the field intensity of the main service every DRX period, confirming that the latest continuous AssessN service-initiating cell measurement sample values are selected by the terminal according to the AssessN values received in the previous SIB2 once the terminal initiates a service request (if the time after the terminal enters an IDLE state or reselects a new cell is too short, the stored service-initiating cell measurement sample values are less than the AssessN, the latest available N measurement levels of the cell are selected for averaging), and obtaining the evaluation field intensity value when the terminal initiates a service. For example, if the AssessN is 1000 and the actual value is 8, the terminal determines that the environmental level is the average value of the previous 8 measured values, i.e. the estimated field strength value.
In the embodiment, the evaluation field strength value is determined by the stored measurement sample value and the evaluation value of the cell initiating the service, so that the level of the environment where the terminal is judged can be accurately evaluated, and the terminal is in a weak field environment or a normal environment.
Further, on the basis of the above embodiment of the present invention, if the terminal is determined to be in the low-field environment according to the field intensity value estimated when the service is initiated, the method includes:
and if the estimated field intensity value is lower than the acquired reference signal intensity value in the cell system message when the service is initiated, judging that the terminal is in the weak field environment.
The reference signal strength value is a parameter Uersrp value in a cell system message and is used for judging a threshold value of a weak field environment or a normal environment.
Specifically, after receiving the cell system message SIB2, the terminal also obtains a urerpp value, and if the obtained evaluation field strength value is lower than the obtained reference signal strength urerpp value in the cell system message, it is determined that the terminal is in the weak field environment.
According to the embodiment, the terminal can be accurately judged to be in a weak field environment or a normal environment through the reference signal strength value and the evaluation field strength value, so that the time length of the random access process is correspondingly controlled.
Further, on the basis of the above embodiment of the invention, the method further includes:
and if the terminal is judged to be in a normal environment according to the field intensity evaluation value during service initiation, determining a second random access allowable time length according to the acquired first timer value in the cell system message.
Wherein the second random access allowable duration is the duration of the RRC layer allowable random access process determined according to the first timer value under the normal level environment
Specifically, if the terminal is judged to be in the normal environment according to the estimated field strength value when the service is initiated, the time length of the random access process allowed by the RRC layer in the normal level environment is determined according to the acquired value of the first timer T300 in the cell system message. In detail, at this time, the UE is controlled by the RRC layer first timer T300 value, when the timer times out (i.e., the RRC connection establishment fails), the RRC layer of the UE stops the random access procedure, at this time, the MAC is reset, the MAC configuration is released, the reset MAC stops the ongoing random access procedure, and the upper layer is notified of the RRC connection establishment failure.
In the embodiment, the duration of the random access process allowed by the RRC layer is determined according to the value of the first timer T300 in the normal environment, resources are reasonably distributed, more random access opportunities are provided in the weak field environment, the random access requirements of terminals in all environments are met, and the random access success rate and the coverage rate of users are comprehensively improved.
Further, on the basis of the above embodiment of the present invention, the determining that the terminal is in the normal environment according to the field intensity evaluation value when the service is initiated includes:
and if the estimated field intensity value is higher than the acquired reference signal intensity value in the cell system message when the service is initiated, judging that the terminal is in the normal environment.
Specifically, if the estimated field strength value is higher than the obtained reference signal strength value in the cell system message when the service is initiated, it is determined that the terminal is in the normal level environment
According to the embodiment, the terminal can be accurately judged to be in a weak field environment or a normal environment through the reference signal strength value and the evaluation field strength value, so that the time length of the random access process is correspondingly controlled.
Further, on the basis of the foregoing embodiment of the present invention, the determining a first random access allowed duration according to the first timer value and the first timer offset value in the acquired cell system message includes:
according to the formula T ═ TT300*(1+TT300offset) Determining the first random access allowable duration;
wherein T represents the first random access allowed time length, TT300Indicating the first timer value, T, in the acquired cell system messageT300offsetRepresenting the acquired first timer offset value in the cell system message.
Specifically, the duration of the random access procedure allowed by the RRC layer in the weak field environment is determined according to the acquired first timer value T300 and the first timer offset value T300offset in the cell system message, and in detail, according to the formula T ═ T-T300*(1+TT300offset) And calculating the first random access allowable duration, wherein the T300offset occupies 1 byte, and the value range is between 0 and 1.
This embodiment is expressed by the formula T ═ TT300*(1+TT300offset) And determining that the first random access allowable duration can compensate the first timer T300 value in the system message, so as to increase more random access times to improve the access success rate.
Newly adding three fields of AssessN, Uersrp and T300offset in a cell system message SIB2, wherein AssessN and Uersrp belong to subfields of a power growth parameter (PowerRampingparameters), Uersrp occupies 5 bytes, and AssessN occupies 4 bytes; the T300offset is attributed to the Ue-TimersandConstants subfield, taking 1 byte.
The AssessN occupies 4 bytes, is 0000-1111 (0-15) respectively, and is mainly used for evaluating the level of the environment where the terminal is located, and the terminal evaluates the average value of the previous assessN measurement levels when initiating random access. If the assessN is 1000 and the actual value is 8, the terminal determines that the environment level is the average value of the previous 8 measurement values.
The Uersrp occupies 5 bytes, which are 00000 to 11111(0 to 31), respectively, and the actual representative level value is-140 dbm, for example, the issued value in SIB2 is 01010, the calculated value is 10, and the actual representative level value is 10-140 ═ 130 dbm. And if the measured evaluation value is lower than-130 dbm, judging that the terminal is in a weak field environment.
The T300offset occupies 1 byte, which is 0 to 1(0, 1), the actual representative value acts on the issued T300 compensation, and for the initial random access terminal in which the idle state changes to the traffic state, when the terminal is in a weak field environment, the actual terminal is T ═ T according to the formula TT300*(1+TT300offset) And determining the time length of the random access process allowed by the RRC layer in the weak field environment.
The specific scheme comprises the following five steps:
the method comprises the following steps: after receiving the cell system message SIB2, the terminal obtains three newly added parameter configurations of AssessN, Uersrp, and T300 offset.
Step two: the old terminal of the existing network storage network cannot understand that the AssessN, Uersrp and T300offset parameters still take effect according to the previous parameter setting.
And the new terminal of the existing network receives the AssssN, Uersrp and T300offset parameters and then carries out measurement evaluation implementation according to the new parameters.
Step three: fig. 4 is a schematic diagram of a first part of information of measurement and evaluation of a primary serving cell provided in an embodiment of the present invention, and fig. 5 is a schematic diagram of a second part of information of measurement and evaluation of a primary serving cell provided in an embodiment of the present invention, as shown in fig. 4 and 5, measurement and evaluation of a primary carrier frequency (primary serving cell) are performed at least once per DRX cycle in an IDLE state of a terminal.
Step four: fig. 6 is a schematic diagram of DRX cycle measurement master server field strength according to an embodiment of the present invention, as shown in fig. 6, a DRX cycle value is set to 640ms, after a terminal enters an IDLE state, the master server field strength is measured and recorded every DRX cycle, once the terminal initiates a service request, the terminal determines to select, according to an AssessN value received in an early SIB2, the latest consecutive AssessN measurement sample values of the cell initiating the service (if the time after the terminal enters the IDLE state or reselects a new cell is too short, and the stored measurement sample values of the cell initiating the service are less than AssessN, the latest available N measurement levels of the cell are selected) for averaging, so as to obtain an estimated field strength value when the terminal initiates the service.
Step five: and the terminal compares the field intensity value with a threshold Uersrp according to the evaluation.
If the evaluation field strength value is higher than or equal to the threshold Uersrp value, the terminal side does not start the T300offset value, and the random service initiation is strictly carried out according to the T300 issued in the network side SIB 2.
And if the estimated field intensity value is lower than the threshold Uersrp value, enabling the terminal side to start the T300offset value, and controlling the random access allowable time length according to the T300+ T300 offset.
If a certain random access fails, the UE can reinitiate the random access. The preamble TransMax field specifies the maximum number of transmissions of the preamble. When the preamble number sent by the UE exceeds preamble transmax, the protocol requires the MAC layer to send a random access protocol indication to the upper layer (usually RRC layer), but the MAC layer does not stop sending the preamble. That is, the MAC layer is designed to transmit the preamble "endlessly", and how to process when "the number of preambles transmitted by the UE exceeds preamble transmax" occurs is determined by an upper layer (RRC layer). The MAC layer sends the preamble "on the fly" in anticipation of successful cell access.
After receiving random access notification of the MAC layer, the behavior of the RRC layer depends on a scenario triggering random access, and when the scenario triggering random access is an initial RRC connection establishment scenario. At this time, the UE is controlled by an RRC timer T300, and when the timer times out (i.e., RRC connection establishment fails), the RRC layer of the UE stops the random access procedure (at this time, the MAC is reset, the MAC configuration is released, the MAC reset stops the ongoing random access procedure, and notifies the upper layer of the RRC connection establishment failure.
For the terminal in the weak field scene, the time length of the T300 timer is properly increased, the service initiation success rate of the terminal can be increased, and the user perception is improved.
Fig. 7 is a schematic flowchart of another method for controlling random access of a user according to an embodiment of the present invention, and as shown in fig. 7, a method for adjusting an access timer based on signal strength to optimize an access success rate includes that a measurement specification, a weak field threshold, and an access timer compensation value are newly issued by a base station side, a terminal side measures a level of an idle serving cell of the terminal side multiple times according to the measurement specification, and a measurement field strength evaluation value is formed to be compared with a reference signal strength value. Once the terminal judges that the terminal is in a low level scene (the measurement average of the idle service cell of the terminal is lower than the strength value of a reference signal issued by a base station side), the terminal compensates a T300 timer in a system message so as to increase more random access times to improve the access success rate; and if the terminal judges that the terminal is in a normal level scene (the average value of the measurement of the self idle state service cell is not lower than the strength value of the reference signal issued by the base station side), executing random access according to a T300 timer issued by the base station.
Fig. 8 is a schematic structural diagram of a control apparatus for user random access according to an embodiment of the present invention, as shown in fig. 8:
a first processing module 801, configured to determine, according to the evaluation value in the acquired cell system message, an evaluation field strength value when the terminal initiates a service;
a second processing module 802, configured to determine, if it is determined that the terminal is in a weak field environment according to the estimated field strength value when initiating the service, a first random access allowed duration according to the obtained first timer value and the first timer compensation value in the cell system message.
In this embodiment, the duration of the random access process allowed by the RRC layer in the terminal weak field scenario is determined by the first timer T300 value and the first timer offset value, so that the duration of the first timer T300 is increased, the success rate of initiating the terminal service is increased, and the user sensing capability is improved.
Further, on the basis of the foregoing embodiment, the determining, according to the evaluation value in the acquired cell system message, the evaluation field strength value when the terminal initiates a service includes:
if the stored measurement sample value of the service initiating cell is smaller than the evaluation value, determining the evaluation field intensity value as the average value of the available measurement levels when the terminal initiates the service;
and if the stored measurement sample value of the service initiating cell is greater than the evaluation value, determining that the evaluation field intensity value when the terminal initiates the service is the average value of the measurement levels of the evaluation values.
Further, on the basis of the above embodiment, obtaining the phase fraction spatial cross-section distribution map according to the sensitive field matrix and the normalized capacitance value includes:
decomposing the sensitive field matrix according to a successive approximation algorithm to obtain a measurement area matrix and a filling area matrix;
and obtaining a phase fraction space section distribution diagram according to the measurement area matrix and the filling area matrix.
Further, on the basis of the above embodiment, if the terminal is judged to be in the weak field environment according to the field intensity evaluation value when the service is initiated includes:
and if the estimated field intensity value is lower than the acquired reference signal intensity value in the cell system message when the service is initiated, judging that the terminal is in the weak field environment.
Further, on the basis of the above embodiment, the apparatus further includes:
and the third processing module is used for determining a second random access allowable duration according to the acquired first timer value in the cell system message if the terminal is judged to be in a normal environment according to the field intensity evaluation value during service initiation.
Further, on the basis of the above embodiment, the determining that the terminal is in the normal environment according to the field intensity evaluation value when the service is initiated includes:
and if the estimated field intensity value is higher than the acquired reference signal intensity value in the cell system message when the service is initiated, judging that the terminal is in the normal environment.
Further, on the basis of the foregoing embodiment, the determining a first random access allowed duration according to the acquired first timer value and the first timer offset value in the cell system message includes:
according to the formula T ═ TT300*(1+TT300offset) Determining the first random access allowable duration;
wherein T represents the first random access allowed time length, TT300Indicating the first timer value, T, in the acquired cell system messageT300offsetRepresenting the acquired first timer offset value in the cell system message.
The control apparatus for user random access in this embodiment may be configured to execute the corresponding method embodiments, and the principle and technical effect are similar, which are not described herein again.
Fig. 9 illustrates a physical structure diagram of an electronic device, and as shown in fig. 9, the electronic device may include: a Processor (Processor)901, a Memory (Memory)902, a communication Interface (Communications Interface)903 and a communication bus 904, wherein the Processor 901, the Memory 902 and the communication Interface 903 are configured to communicate with each other via the communication bus 904. Processor 901 may invoke logic instructions in memory 902 to perform the methods provided by the various method embodiments described above, including, for example: determining an evaluation field intensity value when a terminal initiates a service according to the obtained evaluation value in the cell system message; and if the terminal is judged to be in a weak field environment according to the field intensity evaluation value during service initiation, determining a first random access allowable duration according to a first timer value and a first timer compensation value in the acquired cell system message.
Furthermore, the logic instructions in the memory 902 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product. 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.
Embodiments of the present invention further provide a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to perform the method provided by the foregoing method embodiments when executed by a processor, for example, the method includes: determining an evaluation field intensity value when a terminal initiates a service according to the obtained evaluation value in the cell system message; and if the terminal is judged to be in a weak field environment according to the field intensity evaluation value during service initiation, determining a first random access allowable duration according to a first timer value and a first timer compensation value in the acquired cell system message.
The above-described embodiments of the apparatus are merely illustrative, and 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 modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A method for controlling random access of a user is characterized by comprising the following steps:
determining an evaluation field intensity value when a terminal initiates a service according to the obtained evaluation value in the cell system message;
and if the terminal is judged to be in a weak field environment according to the field intensity evaluation value during service initiation, determining a first random access allowable duration according to a first timer value and a first timer compensation value in the acquired cell system message.
2. The method as claimed in claim 1, wherein the determining the estimated field strength value when the terminal initiates the service according to the estimated value in the acquired cell system message comprises:
if the stored measurement sample value of the service initiating cell is smaller than the evaluation value, determining the evaluation field intensity value as the average value of the available measurement levels when the terminal initiates the service;
and if the stored measurement sample value of the service initiating cell is greater than the evaluation value, determining that the evaluation field intensity value when the terminal initiates the service is the average value of the measurement levels of the evaluation values.
3. The method as claimed in claim 1, wherein said determining that the terminal is in a low-field environment according to the field intensity evaluation value during the service initiation comprises:
and if the estimated field intensity value is lower than the acquired reference signal intensity value in the cell system message when the service is initiated, judging that the terminal is in the weak field environment.
4. The method for controlling random access of users according to claim 1, wherein the method further comprises:
and if the terminal is judged to be in a normal environment according to the field intensity evaluation value during service initiation, determining a second random access allowable time length according to the acquired first timer value in the cell system message.
5. The method as claimed in claim 4, wherein said determining that the terminal is in a normal environment according to the field intensity evaluation value at the time of initiating the service comprises:
and if the estimated field intensity value is higher than the acquired reference signal intensity value in the cell system message when the service is initiated, judging that the terminal is in the normal environment.
6. The method as claimed in claim 1, wherein the determining a first random access allowed duration according to the first timer value and the first timer offset value in the acquired cell system message comprises:
according to the formula T ═ TT300*(1+TT300offset) Determining the first random access allowable duration;
wherein T represents the first random access allowed time length, TT300Indicating the first timer value, T, in the acquired cell system messageT300offsetRepresenting the acquired first timer offset value in the cell system message.
7. An apparatus for controlling random access of a user, comprising:
the first processing module is used for determining an evaluation field intensity value when the terminal initiates a service according to the evaluation value in the acquired cell system message;
and the second processing module is used for determining a first random access allowable duration according to the acquired first timer value and the first timer compensation value in the cell system message if the terminal is judged to be in the weak field environment according to the field evaluation value during service initiation.
8. The apparatus as claimed in claim 7, wherein the determining the estimated field strength value when the terminal initiates the service according to the estimated value in the acquired cell system message comprises:
if the stored measurement sample value of the service initiating cell is smaller than the evaluation value, determining the evaluation field intensity value as the average value of the available measurement levels when the terminal initiates the service;
and if the stored measurement sample value of the service initiating cell is greater than the evaluation value, determining that the evaluation field intensity value when the terminal initiates the service is the average value of the measurement levels of the evaluation values.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method for controlling user random access according to any of claims 1 to 6 are implemented when the processor executes the program.
10. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for controlling random access for a user according to any one of claims 1 to 6.
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