CN106470481B - Paging method, base station and paging system - Google Patents
Paging method, base station and paging system Download PDFInfo
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- CN106470481B CN106470481B CN201510518237.3A CN201510518237A CN106470481B CN 106470481 B CN106470481 B CN 106470481B CN 201510518237 A CN201510518237 A CN 201510518237A CN 106470481 B CN106470481 B CN 106470481B
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Abstract
The invention provides a paging method, a base station and a paging system, and relates to the field of communication. The paging method provided by the invention comprises the following steps: determining the paging retransmission time of the LTE paging message according to the received LTE paging retransmission instruction so as to avoid the paging retransmission time from colliding with the CDMA paging time; wherein, the LTE paging cycle is less than the CDMA paging cycle; and transmitting the LTE paging message according to the paging retransmission time. By the method, the paging retransmission time can be determined according to the LTE paging retransmission instruction from the network side, so that the retransmitted LTE paging message does not conflict with the CDMA paging message at the paging retransmission time, the continuous conflict between LTE paging and CDMA paging is avoided, the probability of successfully receiving the LTE paging message by the terminal is improved, and the user experience is improved.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a paging method, a base station, and a paging system.
Background
SRLTE (Single Radio LTE, dual mode Single standby LTE) is a voice solution for CDMA and LTE dual mode terminals, and by monitoring a CDMA1X network and an LTE network in a staggered manner, standby in two networks is realized, and when a terminal normally works in the LTE network, a paging channel of the CDMA1X network is periodically monitored, a paging message is monitored, and a call of a voice service is solved. Due to low cost, SRLTE terminals will become more popular.
According to the prior art, the time when the terminal monitors the LTE paging channel depends on the IMSI (international mobile Subscriber identity) of LTE, the time when the terminal monitors the CDMA1X paging channel depends on the IMSI of CDMA1X, and there is no relationship between the IMSI of LTE and the IMSI of CDMA1X, so that the problem of conflict between paging times of two networks may be caused, and the paging cycle of CDMA1X and the paging cycle of LTE are integer multiples, and once a conflict occurs, the conflict may be sustained. Typically, the terminal preferentially listens to the CDMA1X channel, and therefore the terminal will not be able to receive LTE paging messages at CDMA1X paging occasions. The problem of LTE paging failure caused by SRLTE terminals is increasingly serious, user experience is influenced, a long time period is needed for solving the problem through standardization, the problem of a new terminal can be solved, and the problem of the terminal of the existing network cannot be solved.
Disclosure of Invention
The invention aims to provide a method for avoiding continuous conflict between LTE paging time and CDMA paging time.
According to an aspect of the present invention, a paging method is provided, including: determining the paging retransmission time of the LTE paging message according to the received LTE paging retransmission instruction so as to avoid the paging retransmission time from colliding with the CDMA paging time, wherein the LTE paging cycle is less than the CDMA paging cycle; and transmitting the LTE paging message according to the paging retransmission time.
Further, the step of determining the paging retransmission time of the LTE paging message according to the received LTE paging retransmission instruction includes: after receiving an LTE paging retransmission instruction sent by a network side, determining paging sending time according to the LTE paging retransmission instruction; calculating the time interval between the sending time of the LTE paging message and the paging sending time of the last time; judging whether the time interval is integral multiple of the CDMA paging cycle; if the time interval is integral multiple of the CDMA paging cycle, the paging transmission time is adjusted to generate the paging retransmission time, so that the interval between the LTE paging message transmission time and the paging retransmission time is not integral multiple of the CDMA paging cycle.
Further, the step of adjusting the paging transmission time to generate the paging retransmission time comprises: and advancing or postponing the paging sending time by nT to obtain the paging retransmitting time, wherein n is a natural number, and T is an LTE paging cycle.
Further, if the time interval is not an integral multiple of the CDMA paging cycle, the paging transmission time is set as the paging retransmission time, and then the step of transmitting the LTE paging message according to the paging retransmission time is performed.
By the method, the base station can determine the paging retransmission time according to the LTE paging retransmission instruction acquired from the network side, so that the retransmitted LTE paging message does not conflict with the CDMA paging message at the paging retransmission time, the continuous conflict between LTE paging and CDMA paging is avoided, the probability of successfully receiving the LTE paging message by the terminal is improved, and the user experience is improved.
According to another aspect of the present invention, there is provided a base station, including an instruction receiving module, a time determining module, and a paging sending module, wherein: the instruction receiving module is used for receiving an LTE paging retransmission instruction from a network side; the time determining module is used for determining the paging retransmission time of the LTE paging message according to the LTE paging retransmission instruction received by the instruction receiving module so as to avoid the paging retransmission time from colliding with the CDMA paging time, wherein the LTE paging cycle is less than the CDMA paging cycle; and the paging sending module is used for sending the LTE paging message according to the paging retransmission time.
Further, the paging occasion determining module includes: the paging sending time determining unit is used for determining the paging sending time according to the LTE paging resending instruction after receiving the LTE paging resending instruction sent by the network side; the time interval determining unit is used for calculating the time interval between the sending time of the LTE paging message and the sending time of the paging message at the previous time; a time interval judging unit for judging whether the time interval is an integral multiple of the CDMA paging cycle; and a paging retransmission time determining unit for adjusting the paging transmission time to generate the paging retransmission time so that the interval between the transmission time of the previous LTE paging message and the paging retransmission time is not an integer multiple of the CDMA paging cycle, when the time interval is an integer multiple of the CDMA paging cycle, according to the judgment result of the time interval judging unit.
Further, the paging retransmission time determining unit specifically advances or delays the paging transmission time by nT to obtain the paging retransmission time, where n is a natural number and T is an LTE paging cycle.
Furthermore, the paging retransmission time determining unit is also configured to take the paging transmission time as the paging retransmission time when the time interval is not an integer multiple of the CDMA paging cycle.
The base station can acquire the LTE paging retransmission instruction from the network side, and the base station determines the paging retransmission time, so that the retransmitted LTE paging message does not conflict with the CDMA paging message at the paging retransmission time, the continuous conflict between LTE paging and CDMA paging is avoided, the probability of successfully receiving the LTE paging message by the terminal is improved, and the user experience is improved.
In addition, a paging system is also provided, which includes an MME and any one of the base stations mentioned above, where the MME is configured to determine whether an LTE paging response is received, and send an LTE paging retransmission instruction to the base station if the LTE paging response is not received within a predetermined time.
Further, the MME specifically judges whether the paging sending times reach a preset retransmission threshold, if the paging sending times do not reach the preset retransmission threshold, the MME adds 1 to the paging sending times, and then executes the operation of sending an LTE paging retransmission instruction to the base station; and if the paging transmission times reach a preset retransmission threshold, stopping transmitting the LTE paging retransmission instruction.
According to the paging system, when the MME does not receive the LTE paging response within the preset time, the MME can issue an LTE paging retransmission instruction to the base station, and the base station determines the paging retransmission time, so that the retransmitted LTE paging message does not conflict with the CDMA paging message at the paging retransmission time, the continuous conflict between the LTE paging and the CDMA paging is avoided, the probability of successfully receiving the LTE paging message by the terminal is improved, and the user experience is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic diagram of paging collision in the case that the LTE paging cycle is smaller than the CDMA paging cycle.
Fig. 2 is a diagram illustrating paging collision in the case where the LTE paging cycle is equal to the CDMA paging cycle.
Fig. 3 is a schematic diagram of paging collision in the case that the LTE paging cycle is greater than the CDMA paging cycle.
Fig. 4 is a flowchart of a paging method according to an embodiment of the present invention.
Fig. 5 is a flowchart of another embodiment of the paging method of the present invention.
Fig. 6 is a schematic diagram of a base station according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of an embodiment of a portion of a base station of the present invention.
Fig. 8 is a diagram of one embodiment of a paging system of the present invention.
Fig. 9 is a flowchart of an embodiment of a method of operating a paging system of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
The CDMA paging cycle and the LTE paging cycle are in integral multiple relation, and when the LTE paging time conflicts with the CDMA1X paging time, different effects can be generated due to the fact that the LTE paging cycle and the CDMA paging cycle are different in size when the LTE paging time and the CDMA1X paging time are sent again.
As shown in fig. 1, the CDMA paging cycle is 1.28s and the LTE paging cycle is 0.64 s. When the first LTE paging time collides with the CDMA paging time, the probability of each retransmission collision is 1/2, taking 3 retransmissions as an example, when the LTE paging time collides with the CDMA paging time when the LTE paging message is first transmitted, the probability of paging failure is 1/8, and since a normal terminal preferentially monitors CDMA paging, there is a probability of paging failure of 1/8 for the LTE network.
As shown in fig. 2, when the LTE paging cycle is equal to the CDMA paging cycle, once a paging collision occurs, a collision occurs in each retransmission, and thus the terminal cannot receive the LTE paging message.
As shown in fig. 3, when the LTE paging cycle is greater than the CDMA paging cycle, once a paging collision occurs, a collision occurs in each retransmission, and the terminal cannot receive a paging message of the LTE network.
In summary, if the LTE paging cycle is smaller than the CDMA paging cycle, once paging collision occurs, the user may be paged successfully through multiple times of paging; however, when the LTE paging cycle is greater than or equal to the CDMA paging cycle, once paging collision occurs, the user cannot be paged successfully. Therefore, it is necessary to configure the LTE paging cycle to be smaller than the CDMA paging cycle, i.e. CDMA paging cycle/LTE paging cycle > 1.
A flow chart of one embodiment of the paging method of the present invention is shown in fig. 4.
In step 401, the base station receives an LTE paging retransmission instruction from the network side. The paging retransmission instruction activates the base station to determine the paging retransmission time. According to the analysis above, it is necessary to configure the LTE paging cycle to be smaller than the CDMA paging cycle. The base station determined paging retransmission times need to be able to avoid collisions with CDMA paging times.
In step 402, the base station retransmits the LTE paging message at the determined paging retransmission time.
By the method, the base station can determine the paging retransmission time according to the LTE paging retransmission instruction acquired from the network side, so that the retransmitted LTE paging message does not conflict with the CDMA paging message at the paging retransmission time, the continuous conflict between LTE paging and CDMA paging is avoided, the probability of successfully receiving the LTE paging message by the terminal is improved, and the user experience is improved.
A flow chart of another embodiment of the paging method of the present invention is shown in fig. 5.
In step 501, the LTE paging retransmission command acquired by the base station activates the base station to start determining a paging transmission time for transmitting a paging message.
In step 502, the time interval between the paging transmission time determined by the base station and the previous LTE paging message transmission time is calculated.
In step 503, the base station determines whether the time interval acquired in step 502 is an integer multiple of the CDMA paging cycle. If the time interval is an integer multiple of the CDMA paging cycle, step 504 is performed. Otherwise, the paging transmission time determined in step 501 is used as the paging retransmission time for retransmitting the LTE paging message, and step 505 is executed.
In step 504, since the collision occurred when the LTE paging message was transmitted last time, and the paging would collide again if the time interval is an integer multiple of the CDMA paging cycle, it is necessary to adjust the paging transmission timing to generate the paging retransmission timing so that the interval between the paging retransmission timing and the LTE paging message transmission timing last time is not an integer multiple of the CDMA paging cycle. In one embodiment, the paging transmission time may be delayed or advanced by nT to generate the paging retransmission time, where n is a natural number and T is an LTE paging cycle. nT is not an integer multiple of the CDMA paging cycle.
In step 505, the LTE paging message is retransmitted at the paging retransmission time.
By the method, whether the paging transmission time is used as the paging retransmission time and conflicts with the CDMA paging time can be determined by judging whether the time interval between the paging transmission time and the LTE paging message transmission time is integral multiple of the CDMA paging cycle. If the time interval is integral multiple of the CDMA paging cycle, the conflict between the LTE paging retransmission time and the CDMA paging time is avoided by delaying or sending the LTE paging message in advance. The method can solve the problem of paging failure of the SRLTE terminal only by realizing the method through the base station side without changing the existing standard, has short time period, and can solve the problem of the existing network in a short period.
In one embodiment, the base station records the time of sending the LTE paging message each time, so that when the LTE paging message needs to be sent again, the base station can determine the time interval according to the recorded sending time of the last LTE paging message, thereby determining the paging retransmission time.
A schematic diagram of one embodiment of a base station of the present invention is shown in fig. 6. Wherein 61 is an instruction receiving module, which can receive an LTE paging retransmission instruction from the network side, so as to activate the time determining module 62 to determine the paging retransmission time for retransmitting the LTE paging message, so that the paging retransmission time is prevented from colliding with the CDMA paging time. And 63, a paging sending module, which resends the LTE paging message at the paging retransmission time determined by the time determining module 62.
The base station can acquire the LTE paging retransmission instruction from the network side, and the base station determines the paging retransmission time, so that the retransmitted LTE paging message does not conflict with the CDMA paging message at the paging retransmission time, the continuous conflict between LTE paging and CDMA1X paging is avoided, the probability of successfully receiving the LTE paging message by the terminal is improved, and the user experience is improved.
In one embodiment, the time determination module 62 is shown in FIG. 7. Here, 701 is a paging transmission time determining unit, which can determine the paging transmission time after the command receiving module 61 obtains the LTE paging retransmission command. Reference numeral 702 denotes a time interval determination unit, which is capable of determining a time interval between the paging transmission time and the LTE paging message transmission time of the previous time based on the paging transmission time determined by the paging transmission time determination unit 701 and the LTE paging message transmission time of the previous time, and transmitting the time interval to the time interval determination unit 703, where the time interval determination unit 703 determines whether the time interval is an integral multiple of the CDMA paging message. 704 is a paging retransmission time determining unit which takes the paging transmission time as the paging retransmission time when the time interval is not an integral multiple of the CDMA paging message; in the case where the time interval is an integer multiple of the CDMA paging message, the paging transmission timing is adjusted to generate the paging retransmission timing such that the interval between the paging retransmission timing and the previous LTE paging message transmission timing is not an integer multiple of the CDMA paging cycle. In one embodiment, the paging transmission time may be delayed or advanced by nT to generate the paging retransmission time, where n is a natural number and T is an LTE paging cycle. nT is not an integer multiple of the CDMA paging cycle.
The base station can determine whether the paging transmission time is used as the paging retransmission time and conflicts with the CDMA paging time by judging whether the time interval between the paging transmission time and the LTE paging message transmission time is integral multiple of the CDMA paging cycle. If the time interval is integral multiple of the CDMA paging cycle, the conflict between the LTE paging retransmission time and the CDMA paging time is avoided by delaying or sending the LTE paging message in advance. The base station does not need to change the existing standard, the change of the existing base station is small, and the problem of the existing network can be solved in a short period.
A schematic diagram of one embodiment of the paging system of the present invention is shown in fig. 8. Where 81 is any one of the base stations mentioned above. And 82 is MME. When failing to receive an LTE paging response from the terminal within a predetermined time, the MME transmits an LTE paging retransmission instruction to the base station 81. The base station 91 performs corresponding operations according to the received LTE paging retransmission instruction, which may include determining whether the number of transmissions of the LTE paging message reaches a predetermined retransmission threshold, determining a paging retransmission time at which the LTE paging message is retransmitted, and retransmitting the LTE paging message at the determined predetermined retransmission time.
According to the paging system, when the MME does not receive the LTE paging response within the preset time, the MME can issue an LTE paging retransmission instruction to the base station, and the base station determines the paging retransmission time, so that the retransmitted LTE paging message does not conflict with the CDMA paging message at the paging retransmission time, the continuous conflict between the LTE paging and the CDMA paging is avoided, the probability of successfully receiving the LTE paging message by the terminal is improved, and the user experience is improved.
In one embodiment, the MME82 may be further configured to record the number of page transmissions of the LTE paging message and determine whether the recorded number of page transmissions has reached a predetermined retransmission threshold when the LTE page response is not received within a predetermined time. If the paging sending times of the LTE paging message are judged to reach a preset retransmission threshold, no LTE paging retransmission instruction is sent to the base station; and if the paging sending times of the LTE paging message are judged not to reach the preset retransmission threshold, adding 1 to the paging sending times, and issuing an LTE paging retransmission instruction to the base station.
By the MME, whether the number of times of sending the LTE paging message reaches a preset retransmission threshold or not can be judged, so that the sending number of times of the LTE paging message is limited in a preset range, the phenomenon that the LTE paging retransmission instruction is sent to the base station for multiple times is avoided, and the base station sends the LTE paging message according to the LTE paging retransmission instruction and occupies too much resources is avoided.
In one embodiment, the method of operation of the paging system of the present invention is shown in FIG. 9.
In step 901, the MME sends an LTE paging command to the base station, and the MME records that the number of paging transmissions of the LTE paging message is 1. The base station can send the LTE paging message according to the LTE paging instruction and record the sending time t of the LTE paging message1。
In step 902, the MME determines whether a Page Response corresponding to the LTE paging is received after a predetermined time, and if so, executes step 905; if not, go to step 903.
In step 903, the MME adds 1 to the paging transmission number of the LTE paging message.
In step 904, the MME determines whether the number of paging transmissions reaches a predetermined retransmission threshold. If the predetermined retransmission threshold is reached, step 905 is performed, otherwise step 906 is performed.
In step 905, the MME does not transmit the LTE paging retransmission instruction to the base station, and ends paging.
In step 906, the MME transmits an LTE paging retransmission instruction to the base station.
In step 907, the base station determines the paging transmission time ti。
In step 908, the determined paging transmission time t is judgediAnd the time t of the last LTE paging message transmission(i-1)Whether the time interval between the two is integral multiple of the CDMA paging message is judged, namely (t)i-t(i-1)) mod T1 is 0, where T1 is the paging cycle for CDMA.
If the time interval is not an integer multiple of the CDMA paging cycle, go to step 909; if the time interval is an integer multiple of the CDMA paging cycle, step 910 is performed.
In step 909, the paging transmission time is regarded as the paging retransmission time, that is, the paging retransmission time is ti. Thereafter, step 911 is performed.
In step 910, the paging transmission time is adjusted to generate a paging retransmission time. The paging transmission time may be postponed by one LTE paging cycle as the paging retransmission time, i.e., ti＝ti+ T2, where T2 is the LTE paging cycle.
In step 911, the base station transmits an LTE paging message according to the determined paging retransmission timing.
In the paging system, the MME can judge whether the frequency of sending the LTE paging message reaches a preset retransmission threshold, so that the retransmission frequency of the LTE paging message is limited in a preset range, and excessive resources occupied by continuously sending the LTE paging message are avoided; the base station can adjust the paging retransmission time, so that the continuous conflict between the LTE paging time and the CDMA paging time is avoided, the probability of successfully receiving the LTE paging message by the terminal is improved, and the user experience is improved; the existing standard is not required to be changed, the change of the existing base station is small, and the problem of the existing network can be solved in a short period.
Finally, it should be noted that: the above embodiments are merely intended to illustrate the technical solution of the present invention and not to limit the alignment; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (6)
1. A paging method, characterized in that,
determining a paging retransmission time of an LTE paging message according to a paging transmission time determined based on a received LTE paging retransmission instruction so as to avoid the paging retransmission time from colliding with a CDMA paging time, comprising:
if the time interval between the paging sending time determined according to the LTE paging resending instruction and the sending time of the previous LTE paging message is integral multiple of the CDMA paging cycle, shortening or increasing the time interval by taking the paging cycle of the LTE as a unit to generate the paging resending time so as to ensure that the interval between the sending time of the previous LTE paging message and the paging resending time is not integral multiple of the CDMA paging cycle;
if the time interval between the paging sending time determined according to the LTE paging retransmission instruction and the sending time of the last LTE paging message is not integral multiple of the CDMA paging cycle, taking the paging sending time as the paging retransmission time;
wherein, the LTE paging cycle is less than the CDMA paging cycle;
and transmitting the LTE paging message according to the paging retransmission time.
2. The method of claim 1, wherein the step of determining the paging retransmission time of the LTE paging message according to the paging transmission time determined based on the received LTE paging retransmission command comprises:
after an LTE paging retransmission instruction sent by a network side is received, determining paging sending time according to the LTE paging retransmission instruction;
calculating the time interval between the sending time of the previous LTE paging message and the paging sending time;
judging whether the time interval is integral multiple of the CDMA paging cycle;
and if the time interval is integral multiple of the CDMA paging cycle, adjusting the paging sending time to generate the paging retransmission time.
3. A base station, comprising an instruction receiving module, a time determining module, and a paging sending module, wherein:
the instruction receiving module is used for receiving an LTE paging retransmission instruction from a network side;
the time determining module is configured to determine a paging retransmission time of an LTE paging message according to a paging transmission time determined based on the LTE paging retransmission instruction received by the instruction receiving module, so that the paging retransmission time avoids collision with a CDMA paging time, and includes:
if the time interval between the paging sending time determined according to the LTE paging resending instruction and the sending time of the previous LTE paging message is integral multiple of the CDMA paging cycle, shortening or increasing the time interval by taking the paging cycle of the LTE as a unit to generate the paging resending time so as to ensure that the interval between the sending time of the previous LTE paging message and the paging resending time is not integral multiple of the CDMA paging cycle;
if the time interval between the paging sending time determined according to the LTE paging retransmission instruction and the sending time of the last LTE paging message is not integral multiple of the CDMA paging cycle, taking the paging sending time as the paging retransmission time;
wherein, the LTE paging cycle is less than the CDMA paging cycle;
and the paging sending module is used for sending the LTE paging message according to the paging retransmission time.
4. The base station of claim 3, wherein the time determination module comprises:
the paging sending time determining unit is used for determining the paging sending time according to the LTE paging resending instruction after receiving the LTE paging resending instruction sent by the network side;
the time interval determining unit is used for calculating the time interval between the sending time of the LTE paging message of the previous time and the paging sending time;
a time interval judging unit, configured to judge whether the time interval is an integer multiple of a CDMA paging cycle;
and the paging retransmission time determining unit is used for adjusting the paging transmission time to generate the paging retransmission time under the condition that the time interval is integral multiple of the CDMA paging cycle according to the judgment result of the time interval judging unit.
5. A paging system comprising a mobility management node function MME and the base station of claim 3 or 4, wherein:
and the MME is used for judging whether an LTE paging response is received or not, and sending an LTE paging retransmission instruction to the base station if the LTE paging response is not received within preset time.
6. The paging system according to claim 5, wherein the MME specifically determines whether the number of paging transmissions reaches a predetermined retransmission threshold, and if the number of paging transmissions does not reach the predetermined retransmission threshold, adds 1 to the number of paging transmissions, and then performs an operation of issuing the LTE paging retransmission instruction to the base station; and if the paging sending times reach a preset retransmission threshold, stopping sending the LTE paging retransmission instruction.
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| CN113875298B (en) * | 2019-06-05 | 2024-07-05 | 联想(北京)有限公司 | Method and apparatus for handling paging collision |
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