Background technology
When using the TD-SCDMA network, the paging factor of eating dishes without rice or wine is carried by PCH channel (paging channel) and PICH channel (Page Indication Channel).Described PICH channel need use with described PCH channel pairing, and PCH channel, PICH channel and FACH channel (forward access channel) can be mapped on the physical channel S-CCPCH simultaneously.
The foundation that communicates to connect between base station and the UE need be passed through following steps usually:
A) UE uses electric resources in order to save, according to the PBP (repetition listening periods) of base station system information broadcasting indication and time repetition period of PICH channel, calculate time repetition period of the current PICH of intercepting channel, and regularly intercept the PICH channel according to described time repetition period.
B) to read on the current PICH channel bit position of the corresponding paging factor be 1 all to described UE, represents that described UE is paged.
C) described UE reads PCH channel followed by PICH channel back according to the relevant parameter of the system information broadcast of PICH channel indication, obtains Paging Type1 message.
D) described UE reads in the Paging Type1 message imsi number, and judges whether consistent with oneself imsi number.
E) determine the imsi unanimity after, carry out the uplink synchronous process, wait for to receive the data of FACH channel.
F) go up indicated time and the power information of data that receives according to FACH channel (forward access channel) and carry out Rrc connection foundation.
G) the Rrc connection is set up and is finished, and described UE carries out initial direct-sending and the corresponding process that direct transfers.
H) carry out Rab and connect foundation, called described UE and calling UE can be carried out service interaction.
In the reality, owing to causing the problem of called UE access failure, the called UE paging failure occurs repeatedly, usually the reason of called UE paging failure comprises two kinds: a kind of is that the Paging message of CN (core net) when sending to the base station is because network problem causes RNC (Radio Network Controller, radio network controller) do not receive corresponding paging information, another does not correctly receive the paging factor that the base station issues for described called UE, perhaps leak and listen the paging factor, thereby cause access failure.More than two kinds of reasons occupy the overwhelming majority with second kind of situation again, the success rate that causes the UE in the prior art mobile communication system to insert is lower, reduces the communication quality of mobile communication system.
Above-mentioned steps b) in, the content of described PICH channel is made up of a series of paging factor, for example the data length of each paging factor can be 2,4,8 symbols, using under the QPSK modulation system, corresponding 4,8,16 continuous bit, and comprise 176 symbols (comprise 2 subframes and add 2 code channels) in every frame of described PICH channel, therefore the carry-on paging factor of the frame data number of described PICH channel is respectively: 88,44,22.The data length of the paging factor is more big, and the data antijamming capability is just more good, thereby UE receives correctly that on described PICH channel the probability of the paging factor is just more big, and it is also more big to insert success rate; But the carry-on paging factor is just more few in the frame PICH channel data, and resident UE number can't guarantee that all UE are by paging correctly more for a long time on the base station cell network.
Embodiment
See also Fig. 1, Fig. 1 is the flow chart of steps of the UE paging method of mobile communication of the present invention.
The UE paging method of described mobile communication may further comprise the steps:
S101 preestablishes several first numerical value intervals of the number that represents resident UE on the base station cell network, and sets the data length value of the paging factor of the interval correspondence of each described first numerical value;
Wherein, the data length value of the number range in the described first numerical value interval and the described paging factor can specifically be set according to actual needs, sets rule to be: the numerical value in the described first numerical value interval is more big, and the data length value of the corresponding described paging factor is more little.But, cause the UE object that can not correctly express paging for the data length of avoiding the described paging factor is very few, cause paging failure, should limit to some extent the data length minimum value of the described paging factor, be limited with the paging data that can accurately put down in writing; Simultaneously the maximum of the data length of the described paging factor also should be less than the length of frame data of described PICH channel.
For example, the value of UE number resident on the described base station cell network is divided into three continuous numerical value intervals: A interval, B interval and C interval, the data length value of the Dui Ying described paging factor is 4,8,16 bit respectively, and then the numerical values recited in three described numerical value intervals is more respectively: A interval>B interval>C interval.
Because the data length of the described paging factor is more big, anti-jamming capacity is more strong, thereby described UE receives correctly that on described PICH channel the probability of the paging factor is just more big, and the success rate of described UE paging is also more high.Therefore, as a kind of preferred implementation, the data length of the described paging factor is set to 16 bit when the UE of mobile communication of the present invention paging method begins.
S103 detects the number of resident UE on the described base station cell network;
As a kind of preferred implementation, in this step, the data of the described resident UE number that detects each time in this step can be kept in the holder.Extract the data of current described resident UE number then from described holder every a predetermined period, execution in step S105 then judges the described first numerical value interval of its correspondence according to described resident UE number.So be finished with regard to the step that need not to wait for the described resident UE number of each detection and judge the described first numerical value interval again, can speed up processing.
S105 judges the described first numerical value interval of its correspondence according to the described resident UE number that detects, and obtains the data length value of the interval corresponding paging factor of described first numerical value;
With interval comparison of predefined each described first numerical value among the described resident UE number that detect to obtain among the step S103 and the step S101, when the number of judging described UE drops in one of them described first numerical value interval, search the data length value that obtains the interval corresponding described paging factor of described first numerical value.
For example, when the number that detects described resident UE among the step S103 dropped within the described B interval, the data length value of then obtaining the described paging factor of the interval correspondence of described B was 8 bit; Increase if detect the number of described resident UE in next sense cycle, and when dropping within the described A interval, the data length value of obtaining the corresponding paging factor should be 4 bit.
S107 arranges the paging factor length that described base station sends according to the data length value of the described paging factor;
Data length value according to the described paging factor that obtains among the step S105, the data length value of the judging the described paging factor whether data length with the paging factor of the current transmission in described base station is identical, if, then do not change the data length of the described paging factor of current transmission, otherwise the data length of the paging factor of the current transmission in described base station is set according to the data length value of the described paging factor.
S109 makes up each described paging factor according to imsi number of each described resident UE, and externally sends by the PICH channel of described base station.
In this step, make up the paging factor of each described UE correspondence according to imsi number of each resident on described base station cell network UE, and by the mode of broadcasting all resident on described base station cell network UE are sent the described paging factor.
After execution in step S105 obtains the data length value of the corresponding paging factor in described first numerical value interval, because the data length of the described paging factor changes, therefore can further carry out following steps: according to the corresponding parameter of revising the system information broadcast that described base station is set of data length of the amended described paging factor.Wherein, mainly comprise parameter value setting relevant in the SIB5 entity, and the scheduling parameter among the MIB (MasterInformation Block, Master Information Block) generates.Described system information is sent to each resident on the described base station cell network described UE with fixing cycle (for example 20ms) repeated broadcast.
Behind execution in step S105, also can further carry out following steps: the data length according to the amended described paging factor is done corresponding the modification to the parameter configuration of the PICH channel of described base station.Make described PICH channel satisfy the transmission requirement of the new paging factor.
Usually, each described UE finishes and can be in idle condition after resident on described base station cell network, intercept the data content of described PICH channel simultaneously, described UE is by the relevant information in the system information broadcast that reads described base station, can determine to read the initial frame number of described PICH channel data uniquely, and further therefrom determine the Data Position of the corresponding paging factor.Therefore if to read the bit position of the corresponding paging factor all be 1 to described UE, show that then described UE is paged, described UE can then read Paging Type 1 message on the PCH channel that follows closely behind the described PICH channel, begins to establish a communications link.
The UE paging method of mobile communication of the present invention goes for various Femto and RNC (RadioNetwork Controller, i.e. radio network controller).
Compared with prior art, in the UE paging method of mobile communication of the present invention, by detecting the number of resident UE on the described base station cell network in real time, dynamically select the data length of the paging factor of base station transmission then according to the number of described resident UE.On described base station cell network resident UE more for a long time, the data length that the described paging factor is set is less, makes in the each frame paging data that sends in base station to comprise the more paging factor, therefore can paging to more called UE; Resident UE more after a little while on described base station cell network, select the data length of the described paging factor bigger, strengthen the antijamming capability of the described paging factor, make called UE receive correctly that on the PICH channel probability of the described paging factor increases, increase the success rate of paging, thereby the success rate that communicates to connect foundation of UE and base station is also increased greatly.Therefore the UE paging method of mobile communication of the present invention can either can increase the antijamming capability of the paging factor again as far as possible on the basis of all UE on the described base station cell network of paging, reduces the probability that the paging factor of described PICH channel is made mistakes.
As a kind of preferred implementation of the present invention, before carrying out described step S103, further may further comprise the steps: preestablish several second value intervals that represent UE number resident on the base station cell network, and set the interval corresponding paging number of retransmissions of each described second value;
Wherein, the span in described second value interval and corresponding described paging number of retransmissions can specifically be set according to actual needs, the setting rule is: the numerical value in described numerical value interval is more big, corresponding described paging number of retransmissions is more big, but does not exceed the maximum retransmission that described base station allows.
And after execution in step S103, further carry out following steps: judge according to the described resident UE number that detects and the described second value interval of its correspondence obtain the interval corresponding paging number of retransmissions of described second value;
And in step S109, carry out the re-transmission of the described paging factor according to described paging number of retransmissions.
The span in each described second value interval can be identical with the span in the described first numerical value interval, also can be different.If identical, when then the data length of the described paging factor changes, the described paging number of retransmissions of corresponding change, if different, then the data length of the described paging factor and described paging number of retransmissions do not change simultaneously.
In the present embodiment, further dynamically set the paging number of retransmissions of described base station according to the number of resident UE on the described base station cell network.Resident UE more for a long time on described base station cell network, described base station is more to the signaling that each UE sends, the probability that bumps between each signaling will increase, therefore increase described paging number of retransmissions, can eliminate the influence that the signaling collision brings to a certain extent, improve the probability that each described UE correctly receives the described paging factor, further increase the success rate of UE paging; Otherwise, if UE resident on the described base station cell network is less, then can reduce described paging number of retransmissions, to reduce the utilance of public physic channel, increase idle time of channel, avoid causing the probability of signaling collision to increase because of the excessive repeating transmission paging factor, can increase the success rate of UE paging equally.
See also Fig. 2, Fig. 2 is the structural representation of the UE paging system of mobile communication of the present invention.
The UE paging system 10 of described mobile communication comprises: detection module 11, first is searched module 12 and paging service processing module 13.
Described detection module 11 is used for namely detecting the resident situation of UE on the base station cell network of current described base station administration in real time every the time of one-period, obtains the number of resident UE, and the number of described resident UE is transferred to described first searches module 12.
Described first searches module 12 for the data length value of the paging factor of several first numerical value intervals that preestablish the number that represents resident UE on the base station cell network and the interval correspondence of each described first numerical value, and judge the described first numerical value interval of its correspondence according to the described resident UE number that described detection module 11 obtains, obtain the data length value of the interval corresponding paging factor of described first numerical value.
Wherein, described first searches the number range in the predefined described first numerical value interval in the module 12 and the data length value of the corresponding described paging factor can specifically be set according to actual needs, the setting rule is: the numerical value in the described first numerical value interval is more big, and the data length value of the corresponding described paging factor is more little.The data length minimum value of the described paging factor is limited can accurately putting down in writing paging data, and its maximum then must be less than the length of frame data of described PICH channel.
Because the data length of the described paging factor is more big, anti-jamming capacity is more strong, thereby described UE receives correctly that on described PICH channel the probability of the paging factor is just more big, and the success rate of described UE paging is also more high.Therefore, as a kind of preferred implementation, the described first data length initial value of searching the described paging factor in the module 12 is set to 16 bit.
Described first searches module 12 according to the resident UE number that obtains in the described detection module 11, described resident UE number and predefined several first numerical value is relatively interval, when the number of judging described resident UE drops in one of them described first numerical value interval, search the data length value that obtains the interval corresponding described paging factor of described first numerical value, and the data length value of the described paging factor is transferred to described paging service processing module 13.
Described paging service processing module 13 is used for according to the data length value of the described paging factor paging factor length that described base station sends being set.
Described paging service processing module 13 is according to the described first data length value of searching the described paging factor that module 12 obtains, the data length value of the judging the described paging factor whether data length with the paging factor of the current transmission in described base station is identical, if, then do not change the data length of the described paging factor of current transmission, otherwise the data length of the paging factor of the current transmission in described base station is set according to the data length value of the described paging factor.
Each described paging factor is made up in imsi number of being further used for according to each described resident UE of described paging service processing module 13, and externally sends by the PICH channel of described base station.
Described paging service processing module 13 makes up the described paging factor according to imsi number of each resident on described base station cell network UE, and the PICH channel by described base station is to UE broadcast transmission resident on the described base station cell network.
Compared with prior art, in the UE paging system 10 of mobile communication of the present invention, described detection module 11 is by detecting the number of resident UE on the described base station cell network in real time, described first searches module 12 dynamically selects the data length of the paging factor that the base station sends according to the number of described resident UE, and by the setting of being correlated with of described paging service processing module 13.Resident UE more for a long time on described base station cell network, described first searches module 12 selects the data length of the described paging factor less, make in the each frame paging data that sends in base station to comprise the more paging factor, therefore can paging arrive more called UE; Resident UE more after a little while on described base station cell network, described first searches module 12 selects the data length of the described paging factor bigger, strengthen the antijamming capability of the described paging factor, make called UE receive correctly that on the PICH channel probability of the described paging factor increases, and increases the success rate of paging.
See also Fig. 3, Fig. 3 is the structural representation of UE paging system second preferred implementation of mobile communication of the present invention.
As a kind of preferred implementation, further comprise in the UE paging system 10 of mobile communication of the present invention: broadcast message arranges module 14, physical layer arranges module 15 and information management module 16.
Described broadcast message arranges the parameter that module 14 is used for arranging according to the data length of the amended described paging factor broadcasting of base station system information.Because the data length of the described paging factor changes, so described broadcast message arranges module 14 according to the corresponding parameter of revising the system information broadcast that described base station is set of data length of the amended described paging factor.Wherein, comprise parameter value setting relevant in the SIB5 entity, and the scheduling parameter among the MIB (Master Information Block, Master Information Block) generates.Described broadcast message arranges module 14 described system information is sent to each resident on the described base station cell network described UE with fixing cycle (for example 20ms) repeated broadcast, make described UE can from described system information, obtain accurate information about described base station, thereby can read the described paging factor exactly, finish paging.
Described physical layer arranges module 15 and is used for according to the data length of the amended described paging factor the corresponding parameter configuration of the PICH channel of described base station being done corresponding the modification, makes described PICH channel satisfy the transmission requirement of the new paging factor.
Described information management module 16 is used for storing the described resident UE number that described detection module 11 obtains, and periodically searches module to described first current described UE number information is provided.Arrange after the described information management module 16, described first searches module 12 can directly read described resident UE number from described information management module 16, accelerates the speed of service of system.
Please further consult Fig. 4, Fig. 4 is the workflow diagram of UE paging system second preferred implementation of mobile communication of the present invention.
Described detection module 11 detects the number of resident UE in the described base station cell network with the fixed cycle, the number of described resident UE is transferred in the described information management module 16 to store then; Described information management module 16 is regularly searched the number that module 12 provides current described resident UE to described first; Described first searches module 12 obtains the data length value of the corresponding paging factor according to the number of described resident UE, transfers to described paging service processing module 13 then, module 14 is set described broadcast message and described physical layer arranges module 15; Described paging service processing module 13 generates the corresponding paging factor according to the data length value of the described paging factor; Described broadcast message arranges module 14 arranges described base station according to the data length value of the described paging factor system broadcast information; Described physical layer arranges module 15 and according to the data length value of the described paging factor PICH channel related parameter is set;
After relevant setting is finished, by described broadcast message the system broadcast information that resident UE in 14 pairs of described base station cell networks of module broadcasts described base station is set; Described paging service processing module 13 is to the corresponding paging factor of each UE broadcasting.
See also Fig. 5 and Fig. 6, Fig. 5 is the structural representation of UE paging system the 3rd preferred implementation of mobile communication of the present invention; Fig. 6 is UE paging system the 3rd preferred implementation workflow diagram of mobile communication of the present invention.
Comprise further in the UE paging system of the mobile communication of described the 3rd preferred implementation that second searches module 17, described second searches the interval and interval corresponding paging number of retransmissions of each described second value of several second values that module 17 is used for preestablishing the number that represents resident UE on the base station cell network, and judge the described second value interval of its correspondence according to the described resident UE number that described detection module obtains, obtain the interval corresponding paging number of retransmissions of described second value.
Wherein, the span in described second value interval and corresponding described paging number of retransmissions can specifically be set according to actual needs, the setting rule is: the numerical value in described numerical value interval is more big, corresponding described paging number of retransmissions is more big, but does not exceed the maximum retransmission that described base station allows.
Described paging service processing module 13 is further carried out the re-transmission of the described paging factor according to the described second paging number of retransmissions of searching the module acquisition.
The span in each described second value interval can be identical with the span in the described first numerical value interval, also can be different.If identical, when then described paging service processing module 13 changes the data length of the described paging factor, change described paging number of retransmissions accordingly, if different, then the data length of the described paging factor and described paging number of retransmissions do not change simultaneously.
In the present embodiment, described second search module 17 is further dynamically set described base station according to the number of resident UE on the described base station cell network paging number of retransmissions.Resident UE more for a long time on described base station cell network, described base station is more to the signaling that each UE sends, the probability that bumps between each signaling will increase, therefore described second search the described paging number of retransmissions of described paging service processing module 13 increases of module 17 controls, can eliminate the influence that the signaling collision brings to a certain extent, improve the probability that each described UE correctly receives the described paging factor, further increase the success rate of UE paging; Otherwise, if UE resident on the described base station cell network is less, the described paging number of retransmissions of corresponding minimizing then, to reduce the utilance of public physic channel, increase idle time of channel, avoid causing the probability of signaling collision to increase because of the excessive repeating transmission paging factor, can increase the success rate of UE paging equally.
Above-described embodiment of the present invention does not constitute the restriction to protection range of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection range of the present invention.