CN112020138A - Method, device, equipment and medium for determining timing duration of paging timer - Google Patents
Method, device, equipment and medium for determining timing duration of paging timer Download PDFInfo
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- H—ELECTRICITY
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- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/02—Arrangements for increasing efficiency of notification or paging channel
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Abstract
The embodiment of the disclosure discloses a method and a device for timing duration of a paging timer, communication equipment and a storage medium. The timing duration method of the paging timer comprises the following steps: determining the timing duration of a paging timer according to the distribution condition information of the user equipment; wherein the timing duration of the paging timer is used for timing the paging of the user equipment.
Description
Technical Field
The present disclosure relates to the field of wireless communications, and in particular, to a method and an apparatus for timing a duration of a paging timer, a communication device, and a storage medium.
Background
When a User Equipment (UE) enters an inactive state or an idle state (idle state) or a Discontinuous Reception (DRX) state or an Extended Discontinuous Reception (Extended DRX, eDRX) state, if a network side device has data of an emergency bearer service to be sent to the UE, the UE needs to exit the state through paging and switch to a connected state or an active state capable of receiving and sending the data.
Disclosure of Invention
In view of the above, it is desirable to provide a method and an apparatus for timing duration of a paging timer, a communication device, and a storage medium.
The technical scheme of the disclosure is realized as follows:
at least one embodiment of the present application provides a method for determining a timing duration of a paging timer, including:
determining the timing duration of a paging timer according to the distribution condition information of the user equipment; wherein the timing duration of the paging timer is used for timing the paging of the user equipment.
Furthermore, according to at least one embodiment of the present application, the determining a timing duration of a paging timer according to distribution status information of a user equipment includes:
determining the distribution proportion of the user equipment under different network coverage conditions according to the distribution condition information of the user equipment;
and determining the timing duration of the paging timer according to the distribution proportion under the different network coverage conditions.
Furthermore, according to at least one embodiment of the present application, the determining, according to the distribution status information of the ue, a distribution ratio of the ue under different network coverage conditions includes:
and determining the distribution proportion of the user equipment under different coverage enhancement levels according to the distribution condition information of the user equipment.
Furthermore, according to at least one embodiment of the present application, the determining the timing duration of the paging timer according to the distribution ratios under the different network coverage conditions includes:
and determining the timing duration of the paging timer according to the distribution proportion and the preset duration corresponding to the coverage enhancement grade.
In addition, according to at least one embodiment of the present application, the determining the timing duration of the paging timer according to the distribution ratio corresponding to the coverage enhancement level and the predetermined duration includes:
and when N +1 coverage enhancement grades exist, determining the timing duration of the paging timer according to the distribution proportion and the preset duration corresponding to the N +1 coverage enhancement grades.
In addition, according to at least one embodiment of the present application, the determining the timing duration of the paging timer according to the distribution ratio and the predetermined duration corresponding to the coverage enhancement level further includes:
when N +1 coverage enhancement levels exist, if the sum of distribution ratios corresponding to the coverage enhancement level N to the coverage enhancement level N is less than a preset threshold value, determining the timing duration of the paging timer according to at least one of preset durations corresponding to the coverage enhancement level 0 to the coverage enhancement level N-1, wherein N is a positive integer not less than 1; n is a positive integer less than N.
In addition, according to at least one embodiment of the present application, a time difference between a predetermined time corresponding to the network coverage level n and a predetermined time corresponding to the coverage enhancement level n-1 is greater than a time threshold.
In addition, according to at least one embodiment of the present application, the number of repetitions of channel transmission corresponding to the network coverage level n is greater than a threshold number of repetitions.
In addition, according to at least one embodiment of the present application, at least one of the predetermined time periods corresponding to the coverage enhancement level 0 to the coverage enhancement level n-1 includes:
determining the timing duration of the paging timer by combining the distribution proportion corresponding to the coverage enhancement level 0 to the coverage enhancement level n-1 and the preset duration;
alternatively, the first and second electrodes may be,
and determining the timing duration of the paging timer according to the preset duration corresponding to the coverage enhancement level n-1.
In addition, according to at least one embodiment of the present application, the determining the timing duration of the paging timer according to the distribution ratio corresponding to the coverage enhancement level and the predetermined duration includes:
and determining the timing duration of the paging timer according to the distribution proportion, the preset duration corresponding to the different coverage enhancement levels and the time margin.
Further, in accordance with at least one embodiment of the present application, the method further comprises:
acquiring the corresponding relation between the timing duration of the paging timer and the actual paging success rate under the preset user equipment distribution condition;
the determining the timing duration of the paging timer according to the distribution status information of the user equipment includes:
and determining the timing duration of the paging timer by combining the corresponding relation, the distribution condition information and the expected paging success rate.
Furthermore, according to at least one embodiment of the present application, the determining the timing duration of the paging timer by combining the correspondence, the distribution status information, and the expected paging success rate includes:
combining the corresponding relation, the distribution condition information and the expected paging success rate to obtain a calculation item;
and determining the timing duration of the paging timer according to the calculation item and the time margin. At least one embodiment of the present application provides a timing duration determining apparatus for a paging timer, including:
a determining module, configured to determine a timing duration of the paging timer according to the distribution status information of the ue; wherein the timing duration of the paging timer is used for timing the paging of the user equipment.
At least one embodiment of the present application provides a communication device comprising:
a transceiver for transceiving information;
a memory for information storage;
and the processor is respectively connected with the transceiver and the memory, and is used for controlling the information transceiving of the transceiver and the information storage of the memory by executing the computer executable instructions stored in the memory, and can realize the method for determining the timing duration of the paging timer provided by any technical scheme.
At least one embodiment of the present application provides a computer storage medium having computer-executable instructions stored thereon; after the computer executable instruction is executed by the processor, the method for determining the timing duration of the paging timer provided by any technical scheme can be realized.
According to the technical scheme provided by the embodiment of the disclosure, the timing duration of the paging timer can be set according to the distribution status information of the user equipment, and more reasonable timing duration can be set compared with the case that the timing duration of the paging timer is directly set without paying attention to the distribution status information of the user equipment, so that the problems of large paging delay and poor user experience caused by overlarge timing duration are reduced; meanwhile, the phenomena of high paging failure rate and paging air interface resource waste caused by the fact that the paged user equipment does not successfully receive the paging message due to the fact that the set timing duration is too short can be reduced; the method has the advantages of reducing air interface resource waste and achieving balance between higher paging success rate and lower paging delay.
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Fig. 1 is a schematic flowchart of a method for determining a timing duration of a paging timer according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a paging method according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating another method for determining a timing duration of a paging timer according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a method for determining a timing duration of a paging timer according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a timing duration determining apparatus of a paging timer according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
Detailed Description
The technical solution of the present disclosure is further described in detail below with reference to the drawings and specific embodiments of the specification.
As shown in fig. 1, at least one embodiment of the present application provides a method for determining a timing duration of a paging timer, including:
step S110: determining the timing duration of a paging timer according to the distribution condition information of the user equipment; wherein the timing duration of the paging timer is used for timing the paging of the user equipment.
The paging method provided in this embodiment may be applied to a network side device, where the network side device includes but is not limited to a network side device of a core network. The network side devices of the core network include but are not limited to: mobility Management Entity (MME) or Access Function (AF).
In the paging process, the core network has two paging timers T3413 and T3415 for controlling the start, restart, and stop of the paging procedure. Where T3415 timer is used for the scenario where the terminal starts eDRX and there is no PDN connection for the emergency bearer service for the UE, and T3413 timer is used for other scenarios besides this.
The MME starts a T3413 or T3415 timer when paging for the first time, and stops the corresponding timer after receiving a paging response. When the timer T3413 times out, the network restarts the paging procedure and restarts the timer T3413. When the timer T3415 times out, the network discards the paging procedure.
The paging timer in step S110 may be the aforementioned T3413 or T3415.
Fig. 2 illustrates a method for paging a user equipment, which may include:
the core network sends a paging message to the base station, for example, the MME sends a paging message to the base station;
the base station broadcasts a paging message;
after receiving the paging message, the user equipment determines that the user equipment pages the paging message;
requesting random access from a base station; in the process of requesting random access, the user equipment sends a message 1(MSG1, random access preamble) to the base station, and the base station returns a message 2(MSG2, random access response) to the user equipment after receiving the MSG 1; the terminal sends message 3 based on MSG 2(MSG 3); the base station transmits message 4 to the terminal after receiving the MSG 3(MSG 4), and the user equipment further transmits message 5(MSG5), thereby completing random access of the terminal. After the terminal completes random access, the terminal exits from the idle state, the inactive state, the discontinuous reception state and other states, and establishes connection with the base station, so that the terminal can receive data sent by the core network. Among them, MSG5 may carry non-access stratum (NAS) messages, which are passed through to the core network by the base station. In the paging procedure, the NAS message is as a paging response to the paging message. The paging response may inform the core network of the paging status of the user equipment.
When the timing duration of the paging timer is set, the timing duration is dynamically determined according to the distribution condition information of the user equipment, rather than the timing duration which is set statically only.
For example, the user equipment has mobility, and the distribution condition of the user equipment in the network is different at different time points. In this embodiment, the distribution status information of the ue may be dynamically obtained. The dynamically acquiring the distribution status information of the user equipment comprises at least one of the following:
acquiring the distribution state information of user equipment at fixed time; for example, the distribution status information of the user equipment is acquired periodically or is acquired aperiodically;
and acquiring the distribution condition information of the user equipment based on the trigger event. For example, when the actual paging success rate obtained by statistics is found to be lower than the success rate threshold, the distribution status information of the user equipment is acquired, so that the timing duration of the paging timer is updated according to the newly acquired distribution status information of the user equipment, and the subsequent paging success rate is improved. For another example, when the network device of the network is updated with a system, the distribution status information of the ue is obtained again to update the timing duration of the paging timer.
The distribution status information of the user equipment may include at least one of:
the distribution number of the user equipment in different areas;
the distribution density of the user equipment in different areas;
the distribution proportion of the user equipment in different areas;
the distribution quantity of the user equipment under different network coverage conditions;
the distribution density of the user equipment under different network coverage conditions;
the distribution ratio of the user equipment under different network coverage conditions.
The distribution quantity of the user equipment under different coverage enhancement levels;
the distribution density of the user equipment under different coverage enhancement levels;
the distribution ratio of the user equipment under different coverage enhancement levels.
The mode for the network side device to obtain the distribution status information may be that the terminal reports the signal strength of the user equipment to the base station through MSG5 message, and the base station counts and obtains the distribution status of the user equipment in the whole cell.
Wherein, the MSG5 message may be any one of the following:
a narrowband radio resource control connection setup complete message (RRCConnectionSetupComplete-NB);
a radio resource control connection setup complete message (RRCConnectionSetupComplete);
a narrowband radio resource control connection resume complete-NB (rrcconnectionresummemplete-NB);
a radio resource control reestablishment complete message (rrcreestablshmentcomplete);
a radio resource control reconfiguration complete message (rrcreestablshmentcomplete);
a radio resource control setup complete message (RRCSetupComplete);
a radio resource control resume complete message (RRCResumeComplete);
a radio resource control connection resume complete message (rrcconnectionresummemplete);
narrowband radio resource control connection reestablishment completion message (RRCConnectionreconstruction complete-NB)
Narrowband radio resource control connection reconfiguration complete message
(RRCConnectionReconfigurationComplete-NB)
Radio resource control connection reconfiguration complete message
(RRCConnectionReconfigurationComplete)
Radio resource control connection reestablishment completion message
Any one or more of (RRCConnectionReestabilishmentcomplete) reports the signal strength of the base station to the base station, and the base station counts and obtains the distribution situation of the user equipment in the whole cell.
The signal strength may be any one or more of:
reference Signal Received Power (RSRP);
reference Signal Received Quality (RSRQ);
signal to Interference plus Noise Ratio (SINR).
After the timing duration of the paging timer is determined, the paging timer is set; when the core network equipment sends a paging message to the base station, the paging timer starts to time, and when the paging response of the paged user is received, the timer stops to time. When the timer times out, the core network restarts or terminates paging. Paging may cause the ue to exit from an idle state or an inactive state or a discontinuous reception state or an extended discontinuous reception state, which is not convenient for data interaction, and enter an active state or a connected state, which is convenient for data interaction.
In this embodiment, the timing duration of the paging timer is related to the distribution status information of the ue. The network coverage conditions of different locations are different, and the success rate and/or paging delay of the user equipment to be paged are different under different network coverage conditions. If the paging is performed by using the timing duration unrelated to the distribution status information of the ue, the following phenomena may occur:
one of them is: the set timing duration is too long, when the paged user is in a better network coverage condition (such as coverage enhancement level 0 or 1), the number of times of repetition required by the processes of air interface paging, RRC connection establishment and the like is less, and the time required by the air interface paging process is shorter. If the paging is lost or failed for the first paging due to the congestion of the air interface network, the position change of the terminal and other reasons, the network needs to wait for a longer timeout time of the timer to initiate the paging process again, so that the paging delay of the paged user is increased, and the user experience is reduced.
The other one is as follows: if the set timing duration is too short, when the paged user is in a poor network coverage condition (such as coverage enhancement level 2), the number of times of repetition required by the processes of air interface paging, RRC connection establishment and the like is high, and the time required by the air interface paging process is also long. If the paging of the air interface is not completed, the timer will be overtime, so that the core network restarts the paging process, the base station issues the paging again, the waste of air interface resources is caused, and the success rate of the first paging is reduced.
In the embodiment of the present disclosure, the network coverage conditions of different locations are different, so that the timing duration of the paging timer can be determined according to the distribution of the user equipment in different areas. For example, the user equipment is centrally distributed in an area with better network coverage conditions, the network can use fewer air interface network resources to send paging messages, and the whole paging time is shortened accordingly, so that the timing duration can be shortened appropriately, the paging delay of the paged user is reduced, and the like; if the number of the user equipment distributed in the area with poor network coverage conditions is large, the timing duration can be properly increased so as to ensure a certain success rate of first paging and avoid air interface resource waste and the like caused by secondary paging.
In this embodiment, in order to reduce the unreasonable setting of the timing duration, the timing duration of the paging timer is set according to the distribution status information of the user equipment, so that the timing duration of the paging timer is more reasonable, on one hand, the phenomena of low success rate of first paging and resource waste caused by too short timing duration are reduced, and on the other hand, the phenomenon of high paging delay caused by too long timing duration is reduced; the method has the advantages of reducing resource waste, ensuring a certain paging success rate and lowering paging time delay.
In some embodiments, as shown in fig. 3, the step S110 may include:
step S111: determining the distribution proportion of the user equipment under different network coverage conditions according to the distribution condition information of the user equipment;
step S112: and determining the timing duration of the paging timer according to the distribution proportion under the different network coverage conditions.
In this embodiment, the distribution status information of the ue reflects the distribution ratio of the ue under different network coverage conditions.
Different network coverage conditions reflect the quality of the network coverage effect; when the sending time of the paging message is fixed, if the network coverage effect is good, the success rate of the first paging of the user equipment is high; the network coverage effect is poor, and the success rate of the first paging of the user equipment is low.
In this embodiment, in step S111, at least the distribution status information of the ue under the network coverage conditions corresponding to different locations in the designated area is obtained.
In some embodiments, the network coverage condition may be measured by signal transmission quality or channel quality, for example, the signal strength (RSRP), signal quality (RSRQ), signal-to-noise ratio (SNR), signal-to-interference-and-noise ratio (SINR), bit error rate, coverage enhancement level, and other information of the user equipment.
In some embodiments, the step S111 may include:
and determining the distribution proportion of the user equipment under different coverage enhancement levels according to the distribution condition information of the user equipment.
In this embodiment, the quality of the network coverage condition can also be characterized by the coverage enhancement level. The coverage enhancement level of the receiving end is determined according to the signal strength and/or the signal quality and/or the signal to interference plus noise ratio of the signal sent by the sending end received by the receiving end, if the signal strength and/or the signal quality and/or the signal to interference plus noise ratio is higher, the coverage enhancement level is lower, and at the moment, the paging delay of the paging process of the receiving end is shorter. Conversely, the higher the coverage enhancement level is, the longer the paging delay of the paging process of the receiving end will be. Therefore, in the present embodiment, the timing duration of the paging timer may be determined based on the coverage enhancement level.
In this embodiment, the distribution ratio of the ue at different coverage enhancement levels is determined according to the distribution status information of the ue.
For example, the coverage enhancement levels are N +1, which are: 0 to N, the distribution ratio may be represented by: c0: c1: c2: c3: c4: c5 … CN. Wherein, C1 is the distribution ratio corresponding to coverage enhancement level 1; c2 is the distribution ratio corresponding to coverage enhancement level 2; CN is the distribution ratio corresponding to the coverage enhancement level N.
In some embodiments, C0+ C1+ C2+ C3+ C4+ C5 … + CN 1.
The preset time lengths which are used for setting the timing time length of the paging timer and correspond to different coverage enhancement grades are different, so that the reasonable timing time length of the paging timer can be calculated according to the distribution proportion and the preset time length which correspond to the corresponding coverage enhancement grades.
In some further embodiments, the determining the timing duration of the paging timer according to the distribution ratio under the different network coverage conditions includes:
and determining the timing duration of the paging timer according to the distribution proportion and the preset duration corresponding to the coverage enhancement grade.
Specifically, for example, the distribution proportion and the preset time length corresponding to different coverage enhancement levels are used as known quantities for calculating the timing time length of the paging timer to perform function calculation, so that the timing time length of the paging timer can be calculated. For example, using functional relationships
(formula 1) calculating a timing duration of the paging timer. Cn is the distribution proportion corresponding to the coverage enhancement level n; dn is a preset time length corresponding to the coverage enhancement grade n (Dn can be obtained according to simulation or actual test of the current network or traffic statistics of the network side of the current network); and D is the finally calculated timing duration of the paging timer.
In some embodiments, Dj < Dj +1, where Dj is a predetermined duration corresponding to the coverage enhancement level j; dj +1 is a predetermined time duration corresponding to the coverage enhancement level j + 1. j is a natural number less than N.
In some embodiments, the step S112 may include:
and when N coverage enhancement grades exist, determining the timing time of the paging timer according to the distribution proportion and the preset time corresponding to the N coverage enhancement grades.
In this embodiment, the fixed time length of the paging timer is determined according to the distribution ratio and the preset time length corresponding to all the levels of network coverage enhancement. For example, the paging timer duration is calculated using the aforementioned equation 1.
In still other embodiments, the step S112 further includes:
when N +1 coverage enhancement levels exist, if the sum of distribution ratios corresponding to the coverage enhancement level N to the coverage enhancement level N is less than a preset threshold value, determining the timing duration of the paging timer according to at least one of preset durations corresponding to the coverage enhancement level 0 to the coverage enhancement level N-1, wherein N is a positive integer not less than 1; n is a positive integer less than N.
In some embodiments, although there are N +1 coverage enhancement levels, the number of ues distributed in some coverage enhancement levels is small, for example, a coverage enhancement level with a high level has a long preset time duration, but if there are a small number of ues distributed in an area corresponding to these coverage enhancement levels, the timing duration of the paging timer will still be greatly affected; however, in essence, increasing the timing duration of the paging timer at this time contributes little to the success rate of paging, but greatly reduces the paging efficiency. In view of this, in order to balance the paging success rate and improve the paging efficiency as much as possible, the distribution ratio and the preset duration corresponding to the coverage enhancement level N are ignored, and the timing duration of the paging timer is directly determined only according to at least one of the preset durations corresponding to the coverage enhancement level 0 to the coverage enhancement level N-1.
For example, using formulas
(formula 2) Cj is the distribution proportion corresponding to the coverage enhancement level j; dj is a preset time length corresponding to the coverage enhancement grade j; and D is the finally calculated timing duration of the paging timer. Therefore, the timing duration of the paging timer is calculated by adopting a formula 2, and the timing duration is calculated only according to the distribution proportion corresponding to the coverage enhancement grade 0 to the coverage enhancement grade n-1 and the preset duration; and neglecting the distribution proportion and the preset time length corresponding to the coverage enhancement grade N with longer timing time length to the coverage enhancement grade N.
The preset threshold may be a predetermined empirical value, or a simulated value determined by simulation, or the like. The value of the preset threshold may be: decimal values of 0.4, 0.3, 0.2, 0.1 or 0.05, etc.
In some embodiments, the preset threshold may be any fractional value not greater than 0.3.
In some embodiments, the values of the network coverage level n and the coverage enhancement level n-1 may be determined by an instruction received from the human-computer interaction interface, or may be received from other devices.
In some embodiments, the values of the network coverage level n and the coverage enhancement level n-1 may also be automatically determined by the network-side device. For example, the time difference between the predetermined time corresponding to the network coverage level n and the predetermined time corresponding to the coverage enhancement level n-1 is greater than the time threshold. For example, the number of repetitions of channel transmission corresponding to the network coverage level n is greater than a threshold number of repetitions.
In the present embodiment, the time length threshold or the repetition number threshold may be a predetermined empirical value, a simulated value, or an actual value.
For example, if the preset duration Dn corresponding to the network coverage level n may be greater than the preset duration Dn-1 corresponding to the coverage enhancement level n-1 by a number of levels, the duration difference may be determined to be greater than the duration threshold.
For another example, when the unit of the preset duration corresponding to each coverage enhancement level is s, the duration threshold may be xs, and the value of x may be any real number smaller than 3 and larger than 0, for example, 1, 0.5, 0.3, and the like.
In still other embodiments, the at least one of the predetermined time periods corresponding to the coverage enhancement level 0 to the coverage enhancement level n-1 includes:
determining the timing duration of the paging timer by combining the distribution proportion corresponding to the coverage enhancement level 0 to the coverage enhancement level n-1 and the preset duration;
alternatively, the first and second electrodes may be,
and determining the timing duration of the paging timer according to the preset duration corresponding to the coverage enhancement level n-1.
If the distribution ratio and the preset time length corresponding to the coverage enhancement level 0 to the coverage enhancement level n-1 are combined, the timing time length of the paging timer can be determined by adopting the formula 2.
Of course, it is also possible to use
(equation 3) determining a timing duration of the paging timer, wherein T may be a time margin, so as to ensure a paging success rate through introduction of the time margin.
If the timing duration of the paging timer is determined only by the preset duration corresponding to the coverage enhancement level n-1, the preset duration Dn-1 corresponding to the coverage enhancement level n-1 can be directly set as the timing duration of the paging timer, and therefore, user equipment distributed in an area corresponding to the coverage enhancement level 0 to the coverage enhancement level n-1 can have a great probability to ensure that the first paging is successful.
In still other embodiments, the timing duration of the paging timer may also be calculated using equation 4:
d ═ Dn-1+ T (equation 4) where T may be a time margin to ensure paging success rate through the introduction of a time margin.
In some embodiments, the determining the timing duration of the paging timer according to the distribution ratio corresponding to the coverage enhancement level and the predetermined duration includes:
and determining the timing duration of the paging timer according to the distribution proportion, the preset duration corresponding to the different coverage enhancement levels and the time margin.
The timing duration of the paging timer based on the timing margin may be determined based on any one of the aforementioned formula (3), formula (4), and formula (5) as follows.
In some embodiments, as shown in fig. 4, the method further comprises:
step S100: acquiring the corresponding relation between the timing duration of the paging timer and the actual paging success rate under the preset user equipment distribution condition; the paging success rate may be a first paging success rate or a non-first paging success rate, for example, a second paging success rate.
The step S110 may further include a step S113; the step S113 may include: and determining the timing duration of the paging timer by combining the corresponding relation, the distribution condition information and the expected paging success rate.
In some cases, the time length of the timing can be adjusted in the current network, and the paging success rate after the adjusted time length is counted to obtain the corresponding relation between the time length of the paging timer and the actual paging success rate under various user distribution conditions.
The user distribution state a corresponds to a variation relation 1 between the timing duration and the actual paging success rate. Wherein the variation relation comprises the actual paging success rate 1 corresponding to the timing duration 1; the timing duration 2 corresponds to the actual paging success rate 2; the user distribution state B corresponds to another variation relation 2 between the timing duration and the actual paging success rate, wherein the variation relation comprises that the timing duration 3 corresponds to the actual paging success rate 3; the timing duration 4 corresponds to the actual paging success rate 4.
In this embodiment, if the current user distribution status is the user distribution status a, and the expected paging success rate corresponds to the actual paging success rate 1, the timing duration of the paging timer is set to be the timing duration 1 according to the variation relation 1. If the current user distribution state is the user distribution state B, the timing duration of the paging timer is set to be the timing duration 3 or the timing duration 4 according to the current expected paging success rate 3 or 4 based on the variation relation 2.
The corresponding relation can be expressed by functional relation, table or curve.
For example, suppose three coverage enhancement levels are set in the network, and the user distribution ratio at the three coverage enhancement levels is: 0.6: 0.3: under the condition of 0.1, the variation relationship between the actual paging success rate and the timing duration is predetermined, for example, when the paging success rate is 0.7 and the corresponding timing duration is T1; when the paging success rate is 0.8 and the corresponding timing duration is T2; alternatively, the paging success rate is 0.9 and the corresponding timing duration is T3.
If the current user distribution condition information shows that the distribution proportion under the three coverage enhancement levels is 0.6: 0.3: 0.1, and the desired paging success rate is 0.9, the timing duration of the paging timer may be set to T3 by a corresponding relationship. In some embodiments, the timing duration of the paging timer may also be set to T3+ T, which is a time margin.
In some embodiments, different Cumulative Distribution Functions (CDFs) under different ue Distribution conditions are fitted by curve fitting or the like, and the timing duration of the paging timer may be calculated according to the curve in combination with an expected paging success rate.
Further, the determining the timing duration of the paging timer by combining the correspondence, the distribution status information, and the expected paging success rate includes:
combining the corresponding relation, the distribution condition information and the expected paging success rate to obtain a preset time length item; and determining the timing duration of the paging timer according to the preset time duration item and the time margin.
Here, what is obtained by using the above correspondence is not the timing length of the final paging timer, but a calculation item of the timing length; and finally obtaining the timing duration by using the calculation item and the time margin. Specifically, the sum of the calculation item and the time margin is obtained to obtain the timing duration.
As shown in fig. 5, at least one embodiment of the present application provides a timing duration determining apparatus for a paging timer, including:
a determining module, configured to determine a timing duration of the paging timer according to the distribution status information of the ue; wherein the timing duration of the paging timer is used for timing the paging of the user equipment.
The timing duration determination device of the paging timer can be applied to network side equipment.
The apparatus may further comprise: and the storage module is used for storing the timing duration of the timer. Alternatively, the apparatus may further include: and the acquisition module is used for acquiring the distribution state information of the user equipment.
In some embodiments, the determining module may be a program module that, when executed by a processor, is capable of determining the timing duration of the paging timer.
In some embodiments, the determination module may also be a hard-soft combining module including, but not limited to, various programmable arrays; the programmable array includes, but is not limited to, a complex programmable array or a field programmable array.
In still other embodiments, the determination module may also comprise a pure hardware module including, but not limited to, an application specific integrated circuit.
In some embodiments, the determining module comprises:
the first determining submodule is used for determining the distribution proportion of the user equipment under different network coverage conditions according to the distribution condition information of the user equipment;
and the second determining submodule is used for determining the timing duration of the paging timer according to the distribution proportion under different network coverage conditions.
In some embodiments, the first determining sub-module is specifically configured to determine, according to the distribution condition information of the user equipment, a distribution ratio of the user equipment at different coverage enhancement levels.
In some embodiments, the second determining submodule is specifically configured to determine the timing duration of the paging timer according to the distribution ratio corresponding to the coverage enhancement level and a predetermined duration.
In some embodiments, the second determining submodule is specifically configured to, when N +1 coverage enhancement levels exist, determine the timing duration of the paging timer according to a distribution ratio and a preset duration corresponding to the N +1 coverage enhancement levels.
In some embodiments, the second determining submodule is specifically configured to, when there are N +1 coverage enhancement levels, determine, according to at least one of predetermined durations corresponding to a coverage enhancement level 0 to a coverage enhancement level N-1, a timing duration of the paging timer if a sum of distribution ratios corresponding to the coverage enhancement level N is smaller than a preset threshold, where N is a positive integer not smaller than 1; n is a positive integer less than N.
In some embodiments, a difference between the predetermined duration corresponding to the network coverage level n and the predetermined duration corresponding to the coverage enhancement level n-1 is greater than a duration threshold.
In other embodiments, the second determining submodule is specifically configured to determine the timing duration of the paging timer by combining a distribution ratio corresponding to coverage enhancement level 0 to coverage enhancement level n-1 and a preset duration; or, determining the timing duration of the paging timer according to the preset duration corresponding to the coverage enhancement level n-1.
In some embodiments, the second determining submodule is specifically configured to determine the timing duration of the paging timer according to the distribution ratio, the predetermined duration corresponding to the different coverage enhancement levels, and the time margin.
In some embodiments, the apparatus further comprises:
a corresponding relation module, configured to obtain a corresponding relation between a timing duration of the paging timer and an actual paging success rate under a predetermined user equipment distribution condition;
the determining module is specifically configured to determine the timing duration of the paging timer by combining the correspondence, the distribution status information, and an expected paging success rate.
The determining module is further specifically configured to obtain a calculation item by combining the correspondence, the distribution status information, and an expected paging success rate; and determining the timing duration of the paging timer according to the calculation item and the time margin.
Several specific examples are provided below in connection with any of the embodiments described above:
example 1:
the present example provides a method for determining a timing duration of a paging timer, including:
according to the user distribution proportion of different coverage enhancement levels in the network, the duration of the paging timer is set in a weighting mode, and meanwhile, the higher paging success rate and the lower preset paging duration are guaranteed. The scheme can be applied to the time length setting of the paging timer of the MME.
Specifically, when there are N +1 coverage enhancement levels in the network, the user distribution ratio of the different coverage enhancement levels is C0: c1: c2: c3: c4: c5 … CN, and C1+ C2+ C3+ C4+ C5 … + CN ═ 1.
The preset duration of the paging procedure corresponding to different coverage enhancement levels is D0: d1: d2: d3: d4: d5 … DN, the paging timer duration D is set to D ═ Σ Cn × DN, and N takes a value from 0 to N.
For example:
for Narrow-Band Internet of things (NB-IoT) systems, three different coverage enhancement levels CE0, CE1, and CE2 are typically set.
Suppose that the user distribution ratio of CE0, CE1, CE2 is 0.6: 0.3: 0.1, the preset durations of the paging flows corresponding to CE0, CE1, and CE2 are 5s, 10s, and 15s, and the duration of the paging timer should be set to 0.6 × 5+0.3 × 10+0.1 × 15 — 7.5 s.
Example 2:
the present example provides a method for determining a timing duration of a paging timer, including:
under a certain user distribution condition, the paging success rate under different paging timer duration setting conditions is obtained through simulation or actual measurement, so that a function or curve of the paging timer duration and the paging success rate is obtained, such as: cumulative distribution function (CDF curve). And setting the time length of a corresponding paging timer according to the requirement of the current network on the paging success rate.
For example: for NB-IoT systems, three different coverage enhancement levels CE0, CE1, and CE2 are typically set, assuming that the user distribution ratio of CE0, CE1, and CE2 is 0.6: 0.3: 0.1, obtaining the time length of the paging timer corresponding to the paging success rate of 90% as 10s through actual measurement or simulation. If the paging success rate requirement of the current network is 90%, the time length of the paging timer can be set to be 10 s.
When the time of the paging timer set by the MME is short, the terminal cannot complete the random access procedure and send back a paging response to the core network before the timer times out, the core network restarts the paging procedure, and the base station also issues a paging message at the air interface again. But the last air interface paging flow is not influenced by paging again, and the subsequent random access process and paging response can be continuously completed. Therefore, the paging timer may be set without considering users with poor coverage conditions, and for those users, they have the duration of the paging timer to complete the whole paging process.
Example 3:
the present example provides a method for determining a timing duration of a paging timer, including:
when the proportion of users with poor coverage conditions (it may be defined that the preset duration of the whole paging procedure corresponding to the user with the S-th coverage level is significantly improved compared with the preset duration of the paging of the users with the S-1 coverage levels, users with coverage levels S, S +1 and S +2 … all belong to the users with poor coverage conditions, or the users with coverage levels M, M +1 and M +2 … all belong to the users with poor coverage conditions) is lower than a preset threshold, the users with poor coverage conditions are not considered by the setting of the paging timer.
There are various specific ways to set the timing duration of the paging timer, and two options are provided as follows:
when S + M coverage enhancement levels exist in the network, the users with coverage levels of S +1 and S +2 … S + M-1 are obtained through simulation or test as the users with poor coverage conditions, the user proportion of the coverage level difference does not exceed a preset threshold L, and the user distribution proportion of the first S +1 coverage enhancement levels is assumed to be C0: c1: c2: c3: c4: c5 … CS, the preset duration of the paging flow corresponding to different coverage enhancement grades is D0: d1: d2: d3: d4: d5 … DS, the paging timer duration D is set to D ═ Σ Cx × Dx. X takes a value from 0 to S.
When S + M coverage enhancement levels exist in the network, users with coverage levels of S +1 and S +2 … S + M-1 are obtained through simulation or test and are users with poor coverage conditions, the user occupation ratio of the coverage level difference does not exceed a preset threshold L, and the duration D of a paging timer is set to be D-DS if the preset duration of a paging process corresponding to the S +1 th coverage level is DS.
For example: for NB-IoT systems, three different coverage enhancement levels CE0, CE1, and CE2 are generally set, and through the early stage of external field measurement, the paging duration of CE2 is significantly increased compared to the paging duration of CE1, and the user occupancy of CE2 is generally lower than 10%, so that only CE0 and CE1 need to be considered when setting the paging timer. Suppose that the user distribution ratio of CE0 and CE1 is 0.7: 0.3, the preset durations of the paging flows corresponding to CE0 and CE1 are 5s and 10s, and the duration of the paging timer should be set to 0.7 × 5+0.3 × 10 — 6.5 s.
By way of further example: for an NB-IoT system, three different coverage enhancement levels CE0, CE1, and CE2 are generally set, and through the early external field measurement, the paging preset duration of CE2 is obviously improved compared with that of CE1, and the user occupancy of CE2 is generally lower than 10%, so that the paging timer setting only needs to consider the paging preset duration corresponding to CE 1. Assuming that the preset duration of the paging procedure corresponding to the CE1 user is 10s, the duration of the paging timer should be set to 10 s.
For the N +1 enhanced coverage level scenarios, considering the reason of signal fluctuation, etc., it may be considered to add a certain time margin T to the time duration setting of the aforementioned paging timer, such as D ═ Σ Cn × Dn + T or D ═ Dn + T. The value range of n is as follows: 0 to N.
The time length of the paging timer is set based on the user distribution conditions of different coverage enhancement levels, so that the preset paging time length of the user with good coverage conditions can be ensured, and meanwhile, the higher paging success rate is ensured.
Example 4:
the present example provides a method for determining a timing duration of a paging timer, including:
the duration of the paging timer is set based on the user distribution conditions of different coverage enhancement levels of the network, and the method can be applied to MME.
In some cases, when there are S +1 coverage enhancement levels in the network, the user distribution ratio of the different coverage enhancement levels is C0: c1: c2: c3: c4: c5 … CS (C0+ C1+ C2+ C3+ C4+ C5 … + CS equals 1), and the preset duration of the paging procedure corresponding to different coverage enhancement levels is D0: d1: d2: d3: d4: d5 … DS, the paging timer duration D is set to D ═ Σ Cx × Dx. X takes a value from 0 to S.
In some cases, a certain time margin T is added to the weighted calculated timer duration, i.e. the paging timer duration is D ∑ Cx × Dx + T. X takes a value from 0 to S.
In some cases, the paging timer is set to ignore users with poor coverage conditions when the proportion of users with poor coverage conditions is below a preset threshold.
In some cases, the positioning with poor coverage condition may be that the preset time duration of the whole paging procedure corresponding to the S-th coverage level user is obviously longer than the preset time duration of the paging of the S-1 coverage level users, and then the users with coverage levels S, S +1 and S +2 … all belong to the users with poor coverage condition, or the users with coverage levels M, M +1 and M +2 … that are preset artificially all belong to the users with poor coverage condition
In some cases, when there are S + M coverage enhancement levels in the network, it is obtained through simulation or test that the user with coverage level S, S +1 … S + M-1 is a user with poor coverage condition, and the user proportion of the coverage level difference does not exceed the preset threshold L, assuming that the user distribution proportion of the first S coverage enhancement levels is C0: c1: c2: c3: c4: c5 … CS-1(C0+ C1+ C2+ C3+ C4+ C5 … + CS-1 ═ 1), and the preset duration of the paging procedure corresponding to different coverage enhancement levels is D0: d1: d2: d3: d4: d5 … DS-1, the paging timer duration D is set to D ═ Σ Cx × Dx. X takes a value from 0 to S-1.
In some cases, a certain time margin T is added to the weighted calculated timer duration, i.e. the paging timer duration is D ∑ Cx × Dx + T. X takes a value from 0 to S-1.
In some cases, when there are S + M coverage enhancement levels in the network, it is obtained through simulation or test that users with coverage levels of S, S +1 and S +2 … S + M are users with poor coverage conditions, and the user proportion of the coverage level difference does not exceed a preset threshold L, and assuming that the preset duration of the paging procedure corresponding to the S-th coverage level is DS-1, the duration D of the paging timer is set to D-DS-1.
In some cases, a certain time margin T is added to the calculated paging timer duration, i.e. the paging timer duration is D ═ DS-1+ T.
Example 5:
the present example provides a method for determining a timing duration of a paging timer, including:
under a certain user distribution condition, the paging success rate under different paging timer duration setting conditions is obtained through simulation or actual measurement, so that functions of the paging timer duration and the paging success rate are obtained, and the corresponding paging timer duration is set according to the requirement of the current network on the paging success rate.
As shown in fig. 6, the present embodiment provides a communication apparatus including:
a transceiver for transceiving information;
a memory for information storage;
and a processor, respectively connected to the transceiver and the memory, for controlling the transceiver and the memory by executing the computer-executable instructions stored in the memory, and being capable of implementing the method for determining the timing duration of the paging timer provided in any of the foregoing embodiments, for example, the method shown in fig. 1, fig. 3 and/or fig. 4.
The communication device provided in this embodiment may be the foregoing network side device, for example, an MME or an AF.
The memory may include various types of storage media, which are non-transitory computer storage media capable of continuing to remember the information stored thereon after a communication device has been powered down.
The processor may be connected to the antenna and the memory through a bus or the like.
The present embodiments also provide a computer storage medium having computer-executable instructions stored thereon; the computer executable instructions, when executed by the processor, can implement the method for determining the timing duration of the paging timer according to any of the foregoing embodiments, for example, the method shown in fig. 1, fig. 3 and/or fig. 4.
The computer storage medium is a non-transitory storage medium.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
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, that is, 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, all functional units in the embodiments of the present disclosure may be integrated into one processing module, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Technical features disclosed in any embodiment of the present application may be combined arbitrarily to form a new method embodiment or an apparatus embodiment without conflict.
The method embodiments disclosed in any embodiment of the present application can be combined arbitrarily to form a new method embodiment without conflict.
The device embodiments disclosed in any embodiment of the present application can be combined arbitrarily to form a new device embodiment without conflict.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a mobile storage device, 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.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure 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 disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (15)
1. A method for determining a timing duration of a paging timer, comprising:
determining the timing duration of a paging timer according to the distribution condition information of the user equipment; wherein the timing duration of the paging timer is used for timing the paging of the user equipment.
2. The method of claim 1, wherein the determining the timing duration of the paging timer according to the distribution status information of the ue comprises:
determining the distribution proportion of the user equipment under different network coverage conditions according to the distribution condition information of the user equipment;
and determining the timing duration of the paging timer according to the distribution proportion under the different network coverage conditions.
3. The method according to claim 2, wherein the determining the distribution ratio of the ue under different network coverage conditions according to the distribution status information of the ue comprises:
and determining the distribution proportion of the user equipment under different coverage enhancement levels according to the distribution condition information of the user equipment.
4. The method of claim 3, wherein the determining the timing duration of the paging timer according to the distribution ratio under the different network coverage conditions comprises:
and determining the timing duration of the paging timer according to the distribution proportion and the preset duration corresponding to the coverage enhancement grade.
5. The method of claim 4, wherein the determining the timing duration of the paging timer according to the distribution ratio corresponding to the coverage enhancement level and the predetermined duration comprises:
and when N +1 coverage enhancement grades exist, determining the timing duration of the paging timer according to the distribution proportion and the preset duration corresponding to the N +1 coverage enhancement grades.
6. The method of claim 4, wherein the determining the timing duration of the paging timer according to the distribution ratio corresponding to the coverage enhancement level and a predetermined duration further comprises:
when N +1 coverage enhancement levels exist, if the sum of distribution ratios corresponding to the coverage enhancement level N to the coverage enhancement level N is less than a preset threshold value, determining the timing duration of the paging timer according to at least one of preset durations corresponding to the coverage enhancement level 0 to the coverage enhancement level N-1, wherein N is a positive integer not less than 1; n is a positive integer less than N.
7. The method of claim 6, wherein a difference between the predetermined duration corresponding to the network coverage level n and the predetermined duration corresponding to the coverage enhancement level n-1 is greater than a duration threshold.
8. The method of claim 6, wherein the number of repetitions of the channel transmission corresponding to the network coverage level n is greater than a threshold number of repetitions.
9. The method according to claim 6, wherein the at least one of the predetermined time periods corresponding to the coverage enhancement level 0 to the coverage enhancement level n-1 comprises:
determining the timing duration of the paging timer by combining the distribution proportion corresponding to the coverage enhancement level 0 to the coverage enhancement level n-1 and the preset duration;
alternatively, the first and second electrodes may be,
and determining the timing duration of the paging timer according to the preset duration corresponding to the coverage enhancement level n-1.
10. The method according to any one of claims 4 to 9, wherein the determining the timing duration of the paging timer according to the distribution ratio corresponding to the coverage enhancement level and the predetermined duration comprises:
and determining the timing duration of the paging timer according to the distribution proportion, the preset duration corresponding to the different coverage enhancement levels and the time margin.
11. The method of claim 1, further comprising:
acquiring the corresponding relation between the timing duration of the paging timer and the actual paging success rate under the preset user equipment distribution condition;
the determining the timing duration of the paging timer according to the distribution status information of the user equipment includes:
and determining the timing duration of the paging timer by combining the corresponding relation, the distribution condition information and the expected paging success rate.
12. The method of claim 11, wherein the determining the timing duration of the paging timer in combination with the mapping relationship, the distribution status information, and an expected paging success rate comprises:
combining the corresponding relation, the distribution condition information and the expected paging success rate to obtain a calculation item with preset duration;
and determining the timing duration of the paging timer according to the calculation item and the time margin.
13. A timing duration determining apparatus of a paging timer, comprising:
a determining module, configured to determine a timing duration of the paging timer according to the distribution status information of the ue; wherein the timing duration of the paging timer is used for timing the paging of the user equipment.
14. A communication device, comprising:
a transceiver for transceiving information;
a memory for information storage;
a processor, connected to the transceiver and the memory respectively, for controlling the transceiver and the memory by executing the computer-executable instructions stored in the memory, and implementing the method provided in any one of claims 1 to 12.
15. A computer storage medium having stored thereon computer-executable instructions; the computer-executable instructions, when executed by a processor, are capable of performing the method provided by any one of claims 1 to 12.
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Effective date of registration: 20231211 Address after: 32 Xuanwumen West Street, Xicheng District, Beijing 100053 Patentee after: CHINA MOBILE COMMUNICATION LTD., Research Institute Patentee after: CHINA MOBILE COMMUNICATIONS GROUP Co.,Ltd. Patentee after: China Mobile Zijin (Jiangsu) Innovation Research Institute Co.,Ltd. Address before: 32 Xuanwumen West Street, Xicheng District, Beijing 100053 Patentee before: CHINA MOBILE COMMUNICATION LTD., Research Institute Patentee before: CHINA MOBILE COMMUNICATIONS GROUP Co.,Ltd. |