CN102378207A - Method for reducing leaked paging, and terminal - Google Patents
Method for reducing leaked paging, and terminal Download PDFInfo
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- CN102378207A CN102378207A CN2010102538237A CN201010253823A CN102378207A CN 102378207 A CN102378207 A CN 102378207A CN 2010102538237 A CN2010102538237 A CN 2010102538237A CN 201010253823 A CN201010253823 A CN 201010253823A CN 102378207 A CN102378207 A CN 102378207A
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Abstract
The invention relates to the technical field of communications and discloses a method for reducing leaked paging and a terminal. The method comprises the following steps of: during different frequency reselection, receiving broadcast information of a different-frequency cell according to a cycle of the broadcast information of the different-frequency cell; and receiving paging instruction information of a local cell within idle time of the broadcast information receiving according to the cycle of the paging instruction information of the local cell. By adoption of the method, monitoring of paging during the different frequency reselection can be realized, and a paging leakage phenomenon can be avoided.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of method and terminal of leaking paging of reducing.
Background technology
TD-SCDMA (Time Division-Synchronous Code Division Multiple Access; TD SDMA) the 3G (Third Generation) Moblie standard that proposes as China; Be one of three 3G standards of ITU (International Telecommunication Union, International Telecommunications Union) approval.TD-SCDMA has aspects such as flexibility, frequency flexibility and cost in the availability of frequency spectrum, to business support unique advantage is arranged.
In the prior art, a complete networking plan often adopts macrocellular to accomplish large tracts of land and covers, and microcellulor covers Hot Spot or carries out the blind area and covers.And abundant Radio Resource also makes the networking of TD-SCDMA can adopt omnidirectional or different networking modes such as orientation, single carrier frequency or overloading frequency, same frequency or inter-frequency networking.
In the TD-SCDMA system, the terminal is measured all adjacent cell signals and this cell signal strength, when finding that adjacent cell signal strength satisfies the gravity treatment thresholding, and has satisfied the evaluation time, and the beginning gravity treatment is just prepared at the terminal so.Said adjacent sub-district can be a co-frequency cell, also can be alien-frequency district.
For with gravity treatment frequently, the broadcast message of Target cell is read at the terminal, simultaneously, the paging information of former sub-district is carried out demodulation with the midamble sign indicating number of former sub-district, thus the paging of realization background.Also say so, in the frequency reuse adoption process, the terminal can be read the paging information of Target cell broadcast message and this sub-district simultaneously.
For the alien frequencies gravity treatment; In existing TD-SCDMA consensus standard, consider that present terminal can't receive the signal of two different frequent points simultaneously, i.e. the signal of TD-SCDMA system frequency and 2G system frequency; That is to say, can't monitor the paging information of this sub-district when reading the alien-frequency district broadcast message.For this reason, for the alien frequencies gravity treatment, it is preferential to read the Target cell broadcast message, requires terminal different frequency gravity treatment paging to monitor and adds 50ms smaller or equal to the time overhead of the broadcast message of reading Target cell break period, leaks paging during will causing the alien frequencies gravity treatment like this.For the user, the leakage paging means misses phone, and this is very serious problem in mobile communication.
In addition,,, press center frequency point of 1.6MHz, have 9 frequencies so in actual networking, generally be the 15MHz networking because TD-SCDMA band system band width has only 1.6MHz.And the TD-SCDMA system is because code word is shorter, and is anti-with frequently limited in one's ability, thus can consider in a large number in the subsequent network networking that the same frequency that inter-frequency networking avoids identical networking to bring disturbs, so alien frequencies gravity treatment scene is more and more in the actual networking.Alien frequencies gravity treatment scene is many, and it is just big to leak the paging probability so, if exist under the scene of ping-pong reselection at some point especially, leaking the paging phenomenon can be very serious.
Summary of the invention
To the shortcoming of above-mentioned prior art, the embodiment of the invention provides a kind of method and terminal of leaking paging of reducing, and with the monitoring of paging during the gravity treatment of realization alien frequencies, avoids leak paging phenomenon.
The embodiment of the invention provides following technical scheme:
A kind of method of leaking paging that reduces comprises:
During the alien frequencies gravity treatment, receive the broadcast message of said alien-frequency district according to cycle of alien-frequency district broadcast message;
In the free time that receives said broadcast message, receive the paging indication information of this sub-district according to cycle of the paging indication information of this sub-district.
Preferably, said method also comprises:
Confirm in the cycle that receives said broadcast message, whether need receive said paging indication information simultaneously;
If then abandon in the said broadcast message reception of the broadcast sub-frame in the scheduled time, and in this scheduled time, receive said paging indication information.
Preferably, saidly confirm whether need receive said paging indication information simultaneously in the cycle of said broadcast message and comprise receiving:
Cycle and length according to said broadcast message are confirmed each time period that said broadcast message is sent;
Cycle and length according to said paging indication information are confirmed each time period that said paging indication information sends;
If it is overlapping that the time period that time period that said broadcast message is sent and said paging indication information send has, in the cycle that receives said broadcast message, need then to confirm paging receiving indication information simultaneously.
Preferably, the said scheduled time is the time of a broadcast sub-frame.
Preferably, said method also comprises:
When said broadcast message is deciphered, the data of the broadcast sub-frame in the said scheduled time of abandoning are filled with complete 0.
A kind of terminal comprises:
The broadcast message receiving element is used for during the alien frequencies gravity treatment, receives the broadcast message of said alien-frequency district according to cycle of alien-frequency district broadcast message;
The paging indication information receiving element is used for receiving in the free time that receives said broadcast message according to the cycle of the paging indication information of this sub-district the paging indication information of this sub-district.
Preferably, said terminal also comprises:
Judging unit is used to confirm in the cycle that receives said broadcast message, whether need receive said paging indication information simultaneously;
Notification unit; Be used for after said judging unit is confirmed in the cycle of the said broadcast message of reception, need receive said paging indication information simultaneously; Indicate said broadcast message receiving element to abandon in the said broadcast message reception of the broadcast sub-frame in the scheduled time, and indicate said paging indication information receiving element paging receiving indication information in this scheduled time.
Preferably, said judging unit comprises:
Very first time section is confirmed subelement, is used for confirming each time period that broadcast message is sent according to the cycle and the length of said broadcast message;
Second time period was confirmed subelement, was used for confirming each time period that paging indication information sends according to the cycle and the length of said paging indication information;
Compare subelement; Be used for each time period of more said broadcast message transmission and each time period that said paging indication information sends; And the time period of sending with paging indication information in time period that said broadcast message is sent have when overlapping, in the cycle that receives said broadcast message, need to confirm while paging receiving indication information.
Preferably, the said scheduled time is the time of a broadcast sub-frame.
Preferably, said terminal also comprises:
The data filler cells is used for when said broadcast message is deciphered, and the data of the broadcast sub-frame in the said scheduled time of abandoning are filled with complete 0.
The embodiment of the invention reduce to be leaked the method and the terminal of paging, can't receive the characteristics of the signal of two different frequent points simultaneously to present terminal, and the free time of alien-frequency district system message broadcasting is realized the seamless monitoring of paging when utilizing the alien frequencies gravity treatment, avoids leak paging.
Further, if need receive said paging indication information simultaneously receiving in the cycle of said broadcast message, then abandon in the said broadcast message reception of the broadcast sub-frame in the scheduled time, and in this scheduled time, receive said paging indication information.The promptly preferential reception that guarantees paging indication information, thus the leakage paging avoided.Because the Target cell signal quality of gravity treatment is higher, therefore abandon the broadcast sub-frame in the scheduled time, can not produce considerable influence to the decoding performance of broadcast message yet.
Description of drawings
In order to be illustrated more clearly in the application embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously; The accompanying drawing that describes below only is some embodiment that put down in writing among the application, for those of ordinary skills, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart that the embodiment of the invention reduces the method for leaking paging;
Fig. 2 is under the awgn channel, BLER that emulation obtains and the corresponding relation of Ior/Ioc;
Fig. 3 is under the Case1 channel situation, BLER that emulation obtains and the corresponding relation of Ior/Ioc;
Fig. 4 is under the Case3 channel situation, BLER that emulation obtains and the corresponding relation of Ior/Ioc;
Fig. 5 is a kind of structural representation at embodiment of the invention terminal;
Fig. 6 is the another kind of structural representation at embodiment of the invention terminal.
Embodiment
In order to make those skilled in the art person understand the scheme of the embodiment of the invention better, the embodiment of the invention is done further to specify below in conjunction with accompanying drawing and execution mode.
The embodiment of the invention reduce to be leaked the method and the terminal of paging, can't receive the characteristics of the signal of two different frequent points simultaneously to present terminal, and the free time of alien-frequency district system message broadcasting is realized the seamless monitoring of paging when utilizing the alien frequencies gravity treatment, avoids leak paging.
As shown in Figure 1, be the flow chart that the embodiment of the invention reduces the method for leaking paging, mainly may further comprise the steps:
In existing each communication system, after the power-on of terminal, carry out the cell initial search process, finally enter into idle pulley.Under idle pulley, the main task at terminal is exactly to understand system information aperiodically, neighbor cell is measured the gravity treatment of listening to paging information and carrying out the sub-district.
Usually; The system information of Web broadcast and paging information carried out with the fixed cycle; In the TD-SCDMA system, the time that system information is understood at the terminal does not have cycle limit, if the change of system information has taken place; Then network will notify the terminal to understand system information with the mode of paging, from and reduced the time that system information is repeated to understand in the terminal.
In the TD-SCDMA system, said paging information is to broadcast through transmission channel PCH (PagingChannel, PCH) and physical channel PICH (Paging Indicator Channel, Page Indication Channel), and wherein PICH and PCH pairing is used.PCH, PICH and FACH (Forward AccessChannel; Forward access channel) transmission channel can be mapped to a physical channel S-CCPCH (Secondary Common Control Physical Channel simultaneously; Auxiliary publish control physical channel) on; And P-CCPCH (Primary Common Control Physical Channel, Primary Common Control Physical Channel) and S-CCPCH also can be mapped on the physical code channel simultaneously, and timesharing takies the resource on the physical code channel.In physical channel, S-CCPCH is an auxiliary publish control physical channel, is used to carry the data from transmission channel FACH and PCH.The fixing spreading factor that uses SF=16 of S-CCPCH; Do not use physical layer signaling SS (Synchronization Shift) and TPC (Transmit Power Control; But can use TFCI (Transport Format Combination Indicator, transformat indication) transmission power control); Concrete channel parameter is by system information broadcast, and the coding of channel and the cycle that interweaves are 20ms.
During the alien frequencies gravity treatment; The terminal need receive the broadcast message of alien-frequency district; Because said broadcast message is discontinuous, just the terminal need not continue to receive said broadcast message, therefore can utilize the free time of receiving broadcasting information to read the paging indication information of this sub-district.
The alien-frequency district of different agreement pattern; Cycle that its broadcast message is sent and length maybe be different; But for a specific alien-frequency district, cycle and length that its broadcast message is sent are fixed, therefore; Cycle and the length that the broadcast message of adjacent alien-frequency district is sent can be known in the terminal, and cycle and length that the paging indication information of this sub-district sends are also known in the terminal.When the alien frequencies gravity treatment, just can utilize the free time of alien-frequency district transmission broadcast message like this, receive the paging indication information of this sub-district, realize the seamless monitoring of paging, avoid leak paging.
Because the system of different agreement pattern sends the cycle and the length of broadcast message and has difference; Therefore; The time period that the time period that the alien-frequency district broadcast message is sent and this cell paging indication information send possibly have overlapping; That is to say, in the cycle of the broadcast message that receives alien-frequency district, possibly also have the situation that need receive the paging indication information of this sub-district simultaneously.
, reduce in the method for leaking paging for this reason, also can further may further comprise the steps in the embodiment of the invention:
Confirm in the cycle that receives said broadcast message, whether need receive said paging indication information simultaneously;
If then abandon in the said broadcast message reception of the broadcast sub-frame in the scheduled time, and in this scheduled time, receive said paging indication information.Wherein, the said scheduled time is preferably the time of a broadcast sub-frame, and promptly 5ms is certain, and according to the difference of agreement, the length of the said scheduled time also can be other values less than the broadcasting frame length.Like this, on the time that receives said broadcast message and the said paging indication information of reception, have under the situation of conflict, preferentially guaranteed the reception of paging indication information, avoided the leakage paging.
Particularly; When confirming in the cycle of the said broadcast message of reception, whether need receive said paging indication information simultaneously; Can at first confirm each time period that said broadcast message is sent, and confirm each time period that said paging indication information sends according to the cycle and the length of said paging indication information according to the cycle and the length of said broadcast message; Then, it is overlapping to check whether the time period of said broadcast message transmission and the time period that said paging indication information sends have, if having, in the cycle that receives said broadcast message, need then to confirm paging receiving indication information simultaneously.
Owing to receiving in the cycle of said broadcast message and need receive simultaneously under the situation of said paging indication information, abandoned in the said broadcast message reception of the broadcast sub-frame in the scheduled time.Correspondingly, when said broadcast message is deciphered, can the data of the broadcast sub-frame in the said scheduled time of abandoning be filled into row decoding with complete 0.
In this embodiment; In the cycle that receives said broadcast message, need receive simultaneously under the situation of said paging indication information, though abandoned interior broadcast sub-frame of the scheduled time in the said broadcast message, generally speaking; Because the Target cell signal quality of gravity treatment is higher; Therefore in the TTI of broadcast message (Transmission Time Interval, Transmission Time Interval), abandon the broadcast sub-frame in the scheduled time, can not produce considerable influence the decoding performance of broadcast message; Can use under the situation preferably at channel quality, from the leakage paging phenomenon during having avoided the alien frequencies gravity treatment under the situation that does not influence the alien-frequency district broadcast channel decoding.
In addition, also further proved above-mentioned conclusion through emulation experiment.
TTI in the face of broadcast message is 20ms down, and the said scheduled time is that the simulation scenarios of 5ms elaborates.
Simulation parameter is provided with as shown in table 1 below:
Table 1
Multipath transmisstion decay environment is provided with as shown in table 2 below:
Table 2
Above-mentioned table 2 has been described the channel model that is used for emulation, specifically can be referring to 3GPP34.122.
The setting of simulation time: the emulation total block data reaches 10000 emulation to be stopped.
Simulation result such as Fig. 2 are to shown in Figure 7, and wherein: Ior/Ioc representes the ratio of received signal power and noise power.
What Fig. 2 represented is under AWGN (additive white Gaussian noise) channel, the corresponding relation of BLER (Block Error Ratio, Block Error Rate) and Ior/Ioc;
What Fig. 3 represented is under the Case1 channel situation, the corresponding relation of BLER and Ior/Ioc;
What Fig. 4 represented is under the Case2 channel situation, the corresponding relation of BLER and Ior/Ioc.
Below table 3 to have listed respectively under two kinds of channel models shown in the table 2 when receiving 3 broadcast sub-frame and receiving 2 broadcast sub-frame with the broadcast channel decoding result who receives 4 broadcast sub-frame be 0.01 o'clock performance gap at BLER:
Table 3
From simulation result, carry out broadcast channel decoding if receive only 2 sub-frame, comparing the whole subframes of complete reception, to carry out the broadcast channel decoding performance gap very big, do not have practical value; Receive 3 sub-frame and carry out broadcast channel decoding, compare the whole subframes of complete reception and carry out the broadcast channel decoding performance gap in 2dB, channel quality preferably situation can use.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in the computer read/write memory medium; Described storage medium, as: ROM/RAM, magnetic disc, CD etc.
Correspondingly, the embodiment of the invention also provides a kind of terminal, and is as shown in Figure 5, is a kind of structural representation at embodiment of the invention terminal.
In this embodiment, said terminal 500 comprises:
Broadcast message receiving element 501 is used for during the alien frequencies gravity treatment, receives the broadcast message of said alien-frequency district according to cycle of alien-frequency district broadcast message;
Paging indication information receiving element 502 is used for receiving in the free time that receives said broadcast message according to the cycle of the paging indication information of this sub-district the paging indication information of this sub-district.
The terminal of the embodiment of the invention can't receive the characteristics of the signal of two different frequent points simultaneously to present terminal, and the free time of alien-frequency district system message broadcasting is realized the seamless monitoring of paging when utilizing the alien frequencies gravity treatment, has avoided the leakage paging.
As shown in Figure 6, be the another kind of structural representation at embodiment of the invention terminal.
Be with difference embodiment illustrated in fig. 5; In this embodiment; Said terminal 600 not only comprise with embodiment illustrated in fig. 5 in corresponding broadcast message receiving element 601 and paging indication information receiving element 602, also further comprise judging unit 603 and notification unit 604.Wherein:
Judging unit 603 is used to confirm in the cycle that receives said broadcast message, whether need receive said paging indication information simultaneously;
Wherein, the said scheduled time can be preferably the time of a broadcast sub-frame.
Said judging unit 603 can comprise:
Very first time section is confirmed subelement, is used for confirming each time period that broadcast message is sent according to the cycle and the length of said broadcast message;
Second time period was confirmed subelement, was used for confirming each time period that paging indication information sends according to the cycle and the length of said paging indication information;
Compare subelement; Be used for each time period of more said broadcast message transmission and each time period that said paging indication information sends; And the time period of sending with paging indication information in time period that said broadcast message is sent have when overlapping, in the cycle that receives said broadcast message, need to confirm while paging receiving indication information.
In addition, Fig. 5 and embodiment illustrated in fig. 6 in, said terminal also can further comprise:
The data filler cells is used for when said broadcast message is deciphered, and the data of the broadcast sub-frame in the said scheduled time of abandoning are filled with complete 0.
The terminal of the embodiment of the invention; In the cycle that receives said broadcast message, need receive under the situation of said paging indication information simultaneously; Though abandoned interior broadcast sub-frame of the scheduled time in the said broadcast message, generally speaking, because the Target cell signal quality of gravity treatment is higher; Therefore in the TTI of broadcast message, abandon the broadcast sub-frame in the scheduled time; Can not produce considerable influence, can use under the situation preferably at channel quality, from the leakage paging phenomenon during having avoided the alien frequencies gravity treatment under the situation that does not influence the alien-frequency district broadcast channel decoding to the decoding performance of broadcast message.
For the convenience of describing, be divided into various unit with function when describing above terminal and describe respectively.Certainly, when embodiment of the present invention embodiment, can the function of each unit be realized in same or a plurality of softwares and/or hardware.
Description through above execution mode can know, those skilled in the art can be well understood to the embodiment of the invention and can realize by the mode that software adds essential general hardware platform.Based on such understanding; The part that the technical scheme of the embodiment of the invention contributes to prior art in essence in other words can be come out with the embodied of software product; This computer software product can be stored in the storage medium, like ROM/RAM, magnetic disc, CD etc., comprises that some instructions are with so that a computer equipment (can be a personal computer; Server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the application or embodiment.
More than the embodiment of the invention has been carried out detailed introduction, used embodiment among this paper the present invention set forth, the explanation of above embodiment just is used for help understanding method and apparatus of the present invention; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. one kind is reduced the method for leaking paging, it is characterized in that, comprising:
During the alien frequencies gravity treatment, receive the broadcast message of said alien-frequency district according to cycle of alien-frequency district broadcast message;
In the free time that receives said broadcast message, receive the paging indication information of this sub-district according to cycle of the paging indication information of this sub-district.
2. method according to claim 1 is characterized in that, said method also comprises:
Confirm in the cycle that receives said broadcast message, whether need receive said paging indication information simultaneously;
If then abandon in the said broadcast message reception of the broadcast sub-frame in the scheduled time, and in this scheduled time, receive said paging indication information.
3. method according to claim 2 is characterized in that, saidly confirms whether need receive said paging indication information simultaneously in the cycle of said broadcast message and comprise receiving:
Cycle and length according to said broadcast message are confirmed each time period that said broadcast message is sent;
Cycle and length according to said paging indication information are confirmed each time period that said paging indication information sends;
If it is overlapping that the time period that time period that said broadcast message is sent and said paging indication information send has, in the cycle that receives said broadcast message, need then to confirm paging receiving indication information simultaneously.
4. method according to claim 2 is characterized in that, the said scheduled time is the time of a broadcast sub-frame.
5. method according to claim 2 is characterized in that, said method also comprises:
When said broadcast message is deciphered, the data of the broadcast sub-frame in the said scheduled time of abandoning are filled with complete 0.
6. a terminal is characterized in that, comprising:
The broadcast message receiving element is used for during the alien frequencies gravity treatment, receives the broadcast message of said alien-frequency district according to cycle of alien-frequency district broadcast message;
The paging indication information receiving element is used for receiving in the free time that receives said broadcast message according to the cycle of the paging indication information of this sub-district the paging indication information of this sub-district.
7. terminal according to claim 1 is characterized in that, said terminal also comprises:
Judging unit is used to confirm in the cycle that receives said broadcast message, whether need receive said paging indication information simultaneously;
Notification unit; Be used for after said judging unit is confirmed in the cycle of the said broadcast message of reception, need receive said paging indication information simultaneously; Indicate said broadcast message receiving element to abandon in the said broadcast message reception of the broadcast sub-frame in the scheduled time, and indicate said paging indication information receiving element paging receiving indication information in this scheduled time.
8. terminal according to claim 7 is characterized in that, said judging unit comprises:
Very first time section is confirmed subelement, is used for confirming each time period that broadcast message is sent according to the cycle and the length of said broadcast message;
Second time period was confirmed subelement, was used for confirming each time period that paging indication information sends according to the cycle and the length of said paging indication information;
Compare subelement; Be used for each time period of more said broadcast message transmission and each time period that said paging indication information sends; And the time period of sending with paging indication information in time period that said broadcast message is sent have when overlapping, in the cycle that receives said broadcast message, need to confirm while paging receiving indication information.
9. terminal according to claim 7 is characterized in that, the said scheduled time is the time of a broadcast sub-frame.
10. terminal according to claim 7 is characterized in that, said terminal also comprises:
The data filler cells is used for when said broadcast message is deciphered, and the data of the broadcast sub-frame in the said scheduled time of abandoning are filled with complete 0.
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| CN102378207B (en) | 2014-10-22 |
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