CN101742686A - Method and device for paging time division synchronous code division multiple access terminal processing system - Google Patents

Method and device for paging time division synchronous code division multiple access terminal processing system Download PDF

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CN101742686A
CN101742686A CN200810176408A CN200810176408A CN101742686A CN 101742686 A CN101742686 A CN 101742686A CN 200810176408 A CN200810176408 A CN 200810176408A CN 200810176408 A CN200810176408 A CN 200810176408A CN 101742686 A CN101742686 A CN 101742686A
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paging
module
descrambling
symbol data
bit
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陈招伟
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ZTE Corp
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ZTE Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention discloses a method and a device for paging a time division synchronous code division multiple access terminal processing system, which can reduce the calculation amount of a terminal processing system when paging. The method comprises the following steps: performing descrambling, dispreading and joint detection on a paging indicator channel to obtain symbol data; rotating the symbol data; rearranging the rotated symbol data into a bit sequence; performing bit descrambling on the bit sequence; reading a corresponding paging indication factor from the bit sequence after the bit descrambling; performing maximum likelihood decision on the paging indication factor to obtain a decision value of the paging indication factor; and reading corresponding paging information through a de-paging channel if the decision value is 1. The method and the device of the invention overcome the shortcoming of great calculation amount when the terminal processing system pages in the prior art, and have the characteristics of strong real-time and low power consumption.

Description

The method of paging time division synchronous code division multiple access terminal processing system and device
Technical field
The present invention relates to TD SDMA (TD-SCDMA) terminal, relate in particular to the method and the device of a kind of TD-SCDMA terminal processing system paging.
Background technology
In the TD-SCDMA mobile communcations system, base station and portable terminal need connect by paging.In paging, the base station sends Paging Indicator (PI) by Page Indication Channel (PICH) to portable terminal.
PICH is the physical channel that does not carry transport channel data, and the pairing of it and paging channel (PCH) is used, the PCH channel (being mapped to Secondary Common Control Physical Channel S-CCPCH) that is used to indicate specific terminal (UE) whether to need to understand and follows thereafter.The fixing spreading factor SF=16 that uses of PICH, a complete PICH is made of two code channels, and the duration of channel is 2 subframes.The content of PICH channel is made up of a series of paging indicators, each paging indicator P q(q=0,1 ..., N PI-1, N PINumber for the paging indicator) length L PICan be 2,4 or 8 symbols (soft symbol), under the situation of Quadrature Phase Shift Keying modulation (QPSK), correspond respectively to 4,8 or 16 successive bits.For the TD-SCDMA system, every frame has 176 symbols (usually, each subframe has only a time slot to be used for transmitting PICH), and therefore the packet count of the UE that can indicate is respectively 88,44 or 22.Concrete frame burst structure is with reference to the accompanying drawings shown in 1, each paging indicator P qBe mapped among the figure
Figure G2008101764089D0000011
Figure G2008101764089D0000012
This 2L PIOn the individual bit position.
Under Radio Resource control (RRC) idle pulley, the UE that is operated under the discontinuous receiving state (DRX) must receive the paging data piece that the base station sends.As shown in Figure 2, each paging data piece is made of a PICH piece and a PCH piece.If the corresponding paging indicator P of UE paging grouping qIn bit be complete 1, promptly 1,1 ..., 1}, then UE is required to receive the paging subchannel in the PCH piece after the PICH piece, to determine whether comprising in the beep-page message paging to this UE.Otherwise, if P qValue be complete 0, promptly 0,0 ..., 0}, then UE can ignore PCH piece thereafter.Arranged between PICH piece and the PCH piece intermittence (Gap), to guarantee UE arranged enough processing times, the value of this Gap is disposed by high level, but can not be oversize, and therefore requiring will have stronger real-time to the processing of paging.
For the processing of paging indication, common way is to calculate the power of PICH frame, and then judges whether to exist the paging indication, and the weak point of doing like this is that amount of calculation is big, thereby real-time is relatively poor, and the power consumption of terminal is also bigger.
Summary of the invention
Technical problem to be solved by this invention is method and the device that is to provide a kind of paging time division synchronous code division multiple access terminal processing system, the amount of calculation during with the paging of minimizing terminal processing system.
In order to solve the problems of the technologies described above, the invention provides a kind of method of paging time division synchronous code division multiple access terminal processing system, comprise the steps:
Page Indication Channel is carried out descrambling and de-spreading and joint-detection, obtain symbol data;
Described symbol data is rotated processing;
It is bit sequence that symbol data after the described rotation processing is reset;
Described bit sequence is carried out bit descrambling;
From the bit sequence behind the described bit descrambling, read corresponding paging indicator;
Described paging indicator is carried out maximum likelihood decision, obtain the decision value of described paging indicator;
Described decision value is 1 and reads corresponding paging information by separating paging channel.
In the aforesaid method, described symbol data is rotated processing, can comprise described terminal to described symbol data turn clockwise 45 the degree processing.
In the aforesaid method, it is bit sequence that the symbol data after the described rotation processing is reset, and can comprise that it is continuous bit sequence that the symbol data after the described rotation processing is reset.
In the aforesaid method, described paging indicator is carried out maximum likelihood decision, can comprise calculate respectively described paging indicator and complete 0 and complete 1 bit sequence apart from d 1And d 2, then according to described apart from d 1And d 2, obtain the decision value of described paging indicator.
Further, if d 1＜d 2, the decision value of then described paging indicator can be 0, otherwise the decision value of described paging indicator can be 1.
In order to solve the problems of the technologies described above, the present invention also provides a kind of device of paging time division synchronous code division multiple access terminal processing system, comprise descrambling and de-spreading and joint-detection module, rotation processing module, reordering module, bit descrambling module, paging indication read module, judging module and paging information read module, wherein:
Descrambling and de-spreading and joint-detection module are used for Page Indication Channel is carried out descrambling and de-spreading and joint-detection, obtain symbol data;
The rotation processing module links to each other with described descrambling and de-spreading and joint-detection module, is used for described symbol data is rotated processing;
Reordering module links to each other with described rotation processing module, and being used for the symbol data after the described rotation processing is reset is bit sequence;
The bit descrambling module links to each other with described reordering module, is used for described bit sequence is carried out bit descrambling;
Paging indication read module links to each other with described bit descrambling module, and the bit sequence that is used for behind the described bit descrambling reads corresponding paging indicator;
Judging module links to each other with described paging indication read module, is used for described paging indicator is carried out maximum likelihood decision, obtains the decision value of described paging indicator;
Judge module links to each other with described judging module, is used to judge whether described decision value is 1; And
The paging information read module links to each other with described judge module, is used for described decision value and is reading corresponding paging information by separating paging channel at 1 o'clock.
In the aforesaid device, described rotation processing module, can be used for to described symbol data turn clockwise 45 the degree processing.
In the aforesaid device, described reordering module, can be used for the symbol data after the described rotation processing is reset is continuous bit sequence.
In the aforesaid device, described judging module, can be used for calculating respectively described paging indicator and complete 0 and complete 1 bit sequence apart from d 1And d 2, then according to described apart from d 1And d 2, obtain the decision value of described paging indicator.
Further, described judging module is at d 1＜d 2The time, the decision value that can adjudicate described paging indicator is 0, otherwise the decision value that can adjudicate described paging indicator is 1.
The big shortcoming of amount of calculation when the inventive method and device have overcome in the prior art terminal processing system paging, real-time, power consumption is less.Can detect the paging indicator according to the DRX cycle of the high-rise configuration of software, thereby the number of times that has reduced the paging detection has improved treatment effeciency.Save the bottom software and hardware resources, reduced hard-wired complexity.
Description of drawings
Fig. 1 is the structural representation of PICH burst;
Fig. 2 is the structural representation of paging block;
Fig. 3 is that Node B side PICH sends the handling process schematic diagram;
Fig. 4 is the inventive method schematic flow sheet;
Fig. 5 A, 5B and 5C are QPSK mapping schematic diagrames;
Fig. 6 is the symbol data form of joint-detection output;
Fig. 7 is apparatus of the present invention structural representations.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, how the application technology means solve technical problem to the present invention whereby, and the implementation procedure of reaching technique effect can fully understand and implements according to this.
In Node B side, when needs carry out paging to a certain UE, send paging information by S-CCPCH, simultaneously, on the relevant position of PICH channel transmission 2L continuously PI Individual bit 1; When not having the paging at a certain UE, will on the relevant position of PICH channel, send 2L continuously PIIndividual bit 0.During transmission, paging indication bit data have been passed through processing procedure as shown in Figure 3, and this processing procedure mainly comprises the steps:
Step 301, Node B carries out bit scramble to PICH data (by 0 and 1 data of forming);
Step 302 arrives { S with the data map behind the bit scramble 1, S 2..., S 352;
Step 303 is carried out the QPSK modulation to the data after the mapping;
Step 304 is carried out spread spectrum to the data after the modulation;
Step 305 is carried out scrambling to the data behind the spread spectrum;
Step 306 is added intermediate code (Midamble) and Gap on the data basis of scrambling, formed the burst of PICH at last, is transmitted to UE aloft.
Schematic flow sheet when Fig. 4 shows UE side joint receipts PICH, this flow process mainly comprises the steps:
Step 401 is carried out processing such as descrambling and de-spreading and joint-detection to PICH, obtain symbol data;
Step 402 is rotated processing to symbol data;
Step 403, it is bit sequence that the symbol data after the rotation processing is reset;
Step 404 is carried out bit descrambling to bit sequence;
Step 405 reads the paging indicator (P of this UE correspondence from the bit sequence behind the described bit descrambling q) Bit String;
Step 406 is to P qBit String carries out maximum likelihood decision, obtains P qDecision value;
Step 407 is judged P qDecision value, if P qDecision value be 1, then change step 408, if P qDecision value be not 1, then carry out other subsequent treatment;
Step 408 reads paging information corresponding to this UE by separating the PCH channel.
Below describe the PICH testing process shown in Fig. 4 in detail.Because a complete PICH divides channel to constitute by two bar codes, the duration of channel is 2 subframes.Suppose that two used channel codes of PICH are respectively C Q=16 (k=i)And C Q=16 (k=j), transmission time slot is m time slot TS of each subframe m(m=0,2,3,4,5,6).The PICH data of two subframes will obtain 88 complex symbol data respectively after handling through descrambling, despreading, joint-detection etc. on each Code Channel.
The planisphere of QPSK modulation is shown in Fig. 5 A.Node B is in the process that sends data, and for the convenience of handling, the binary bits that is adopted arrives the mapping mode of complex symbol shown in Fig. 5 B and Fig. 5 C.Therefore, UE after receiving symbol data, the processing of 45 degree that need turn clockwise, the symbol data and cos (π/the 4)-jsin (π/4) that also are about to receive multiply each other, this be in the above-mentioned steps 402 to rotation processing that symbol data carried out.
In order to improve antijamming capability, Node B side is sending { S 1, S 2..., S 352During the PICH data of these 352 bits, be to arrange by mode shown in Figure 1.The symbol data form of the last joint-detection output of channel i and channel j as shown in Figure 6.In order correctly to extract the 2L of this UE correspondence PIIndividual successive bits need be rearranged for continuous bit sequence with each 88 complex symbol data on two channels after the rotation processing earlier, and this is symbol data is reset in the above-mentioned steps 403 and is the process of bit sequence.
Bit descrambling in the above-mentioned steps 404 has a detailed description in the 4.2.9 of TD-SCDMA agreement " 3GPP TS 25.222 " joint.Bit descrambling is the inverse process of scrambling, repeats no more here.Take out the paging indicator of this UE correspondence the bit sequence after resetting, promptly
Figure G2008101764089D0000061
Figure G2008101764089D0000062
This 2L PIIndividual continuous bit, this is the P that reads this UE correspondence in the above-mentioned steps 405 qThe process of Bit String.Here, the q of this UE and L PICalculate and get by the higher-layer protocols configuration or by relevant configuration.
Ideally, the paging indicator that receives of UE is complete 0 or complete 1 bit.But in fact, since the noise of wireless channel and the influence of interference, the paging indicator of this UE that receives
Figure G2008101764089D0000063
Figure G2008101764089D0000064
Generally be not complete 0 or complete 1, therefore can determine P by it being carried out maximum likelihood decision qValue is 0 or 1.
The method of concrete judgement is: calculate paging indicator and complete 0 and the distance of complete 1 bit sequence respectively, wherein the distance with paging indicator and complete 0 sequence is designated as first apart from d 1, the distance of paging indicator and complete 1 sequence is designated as second distance d 2If, d 1＜d 2, then judgement is P q=0; Otherwise, adjudicate and be P q=1.Because when Node B sends data, carried out 0,1} to 1, the mapping of-1}, therefore calculate apart from the time should calculate respectively the paging indicator to 1,1 ..., 1} and 1 ,-1 ..., the distance of-1}.
Finally, decision method can be reduced to: calculate
Figure G2008101764089D0000065
If d＞0, then judgement is P q=1; Otherwise, adjudicate and be P q=0.
It is described to P more than to be above-mentioned steps 406 qBit String carries out maximum likelihood decision and obtains P qThe process of decision value.
As the resulting P of above-mentioned maximum likelihood decision qDecision value is 1 o'clock, then needs to read the PCH channel paging information of this UE correspondence.Paging information is mapped on the S-CCPCH channel, and desired position and other information can obtain from high level when reading.
Fig. 7 shows the structural representation of processing unit of the present invention.In conjunction with process flow figure shown in Figure 4, processing unit shown in Fig. 7 mainly comprises descrambling and de-spreading and joint-detection module 710, rotation processing module 720, reordering module 730, bit descrambling module 740, paging indication read module 750, judging module 760 and paging information read module 770, wherein:
Descrambling and de-spreading and joint-detection module 710 are used for PICH is carried out processing such as descrambling and de-spreading and joint-detection, obtain symbol data;
Rotation processing module 720 links to each other with descrambling and de-spreading and joint-detection module 710, is used for symbol data is rotated processing;
Reordering module 730 links to each other with rotation processing module 720, and being used for the symbol data after the rotation processing is reset is bit sequence;
Bit descrambling module 740 links to each other with reordering module 730, is used for bit sequence is carried out bit descrambling;
Paging indication read module 750 links to each other with bit descrambling module 740, is used for the paging that bit sequence behind the bit descrambling reads this UE correspondence and indicates (P q) Bit String;
Judging module 760 links to each other with paging indication read module 750, is used for P qBit String carries out maximum likelihood decision, obtains P qDecision value;
Judge module 770 links to each other with judging module 760, is used to judge P qDecision value whether be 1; And
Paging information read module 780 links to each other with judge module 770, is used for by separating the paging information that the PCH channel reads this UE.
The inventive method and device, amount of calculation when greatly reducing the terminal processing system paging, reduced power consumption of terminal, and can detect the paging indicator according to the DRX cycle of the high-rise configuration of software, thereby reduced the number of times that paging detects, and then improved treatment effeciency greatly, further reduced the power consumption of terminal.In addition,, saved the software and hardware resources of bottom, greatly reduced hard-wired complexity because the reduction of amount of calculation has improved the real-time that paging is handled.
Though the disclosed execution mode of the present invention as above, the execution mode that described content just adopts for the ease of understanding the present invention is not in order to limit the present invention.Technical staff in any the technical field of the invention; under the prerequisite that does not break away from the disclosed spirit and scope of the present invention; can do any modification and variation what implement in form and on the details; but scope of patent protection of the present invention still must be as the criterion with the scope that appending claims was defined.

Claims (10)

1. the method for a paging time division synchronous code division multiple access terminal processing system is characterized in that, comprises the steps:
Page Indication Channel is carried out descrambling and de-spreading and joint-detection, obtain symbol data;
Described symbol data is rotated processing;
It is bit sequence that symbol data after the described rotation processing is reset;
Described bit sequence is carried out bit descrambling;
From the bit sequence behind the described bit descrambling, read corresponding paging indicator;
Described paging indicator is carried out maximum likelihood decision, obtain the decision value of described paging indicator; And
Described decision value is 1 and reads corresponding paging information by separating paging channel.
2. the method for claim 1 is characterized in that:
Described symbol data is rotated processing, comprise described terminal to described symbol data turn clockwise 45 the degree processing.
3. the method for claim 1 is characterized in that:
It is bit sequence that symbol data after the described rotation processing is reset, and comprises that it is continuous bit sequence that the symbol data after the described rotation processing is reset.
4. the method for claim 1 is characterized in that:
Described paging indicator is carried out maximum likelihood decision, comprise calculate respectively described paging indicator and complete 0 and complete 1 bit sequence apart from d 1And d 2, according to described apart from d 1And d 2, obtain the decision value of described paging indicator.
5. method as claimed in claim 4 is characterized in that:
If d 1＜d 2, the decision value of then described paging indicator is 0, otherwise the decision value of described paging indicator is 1.
6. the device of a paging time division synchronous code division multiple access terminal processing system, it is characterized in that, comprise descrambling and de-spreading and joint-detection module, rotation processing module, reordering module, bit descrambling module, paging indication read module, judging module and paging information read module, wherein:
Descrambling and de-spreading and joint-detection module are used for Page Indication Channel is carried out descrambling and de-spreading and joint-detection, obtain symbol data;
The rotation processing module links to each other with described descrambling and de-spreading and joint-detection module, is used for described symbol data is rotated processing;
Reordering module links to each other with described rotation processing module, and being used for the symbol data after the described rotation processing is reset is bit sequence;
The bit descrambling module links to each other with described reordering module, is used for described bit sequence is carried out bit descrambling;
Paging indication read module links to each other with described bit descrambling module, and the bit sequence that is used for behind the described bit descrambling reads corresponding paging indicator;
Judging module links to each other with described paging indication read module, is used for described paging indicator is carried out maximum likelihood decision, obtains the decision value of described paging indicator;
Judge module links to each other with described judging module, is used to judge whether described decision value is 1; And
The paging information read module links to each other with described judge module, is used for described decision value and is reading corresponding paging information by separating paging channel at 1 o'clock.
7. device as claimed in claim 6 is characterized in that:
Described rotation processing module, be used for to described symbol data turn clockwise 45 the degree processing.
8. device as claimed in claim 6 is characterized in that:
Described reordering module, being used for the symbol data after the described rotation processing is reset is continuous bit sequence.
9. device as claimed in claim 6 is characterized in that:
Described judging module, be used for calculating respectively described paging indicator and complete 0 and complete 1 bit sequence apart from d 1And d 2, according to described apart from d 1And d 2, obtain the decision value of described paging indicator.
10. device as claimed in claim 9 is characterized in that:
Described judging module is at d 1＜d 2The time, the decision value of adjudicating described paging indicator is 0, otherwise the decision value of adjudicating described paging indicator is 1.
CN200810176408A 2008-11-07 2008-11-07 Method and device for paging time division synchronous code division multiple access terminal processing system Pending CN101742686A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101945405A (en) * 2010-09-17 2011-01-12 京信通信系统（中国）有限公司 UE paging method and system for mobile communication
WO2017152722A1 (en) * 2016-03-07 2017-09-14 大唐移动通信设备有限公司 Data transmission method, apparatus and system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101945405A (en) * 2010-09-17 2011-01-12 京信通信系统（中国）有限公司 UE paging method and system for mobile communication
CN101945405B (en) * 2010-09-17 2013-07-03 京信通信系统（中国）有限公司 UE paging method and system for mobile communication
WO2017152722A1 (en) * 2016-03-07 2017-09-14 大唐移动通信设备有限公司 Data transmission method, apparatus and system
US10616791B2 (en) 2016-03-07 2020-04-07 Datang Mobile Communications Equipment Co., Ltd. Data transmission method, apparatus and system for shunting transmission of local service

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Application publication date: 20100616