CN100473215C - Improved paging method in personal mobile hand-set system and relative equipment - Google Patents
Improved paging method in personal mobile hand-set system and relative equipment Download PDFInfo
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- CN100473215C CN100473215C CNB2004100022596A CN200410002259A CN100473215C CN 100473215 C CN100473215 C CN 100473215C CN B2004100022596 A CNB2004100022596 A CN B2004100022596A CN 200410002259 A CN200410002259 A CN 200410002259A CN 100473215 C CN100473215 C CN 100473215C
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Abstract
The invention discloses a method for coding to enhance PSN and calling a handset adopting the enhanced PSN code, extending PSN to 13 bits to code, and compressing calling information of the handset adopting the above mentioned coding rule, making a calling packet able to call two handsets adopting PSN enhancing coding rule to code, thus able to reduce channel space.
Description
Technical field
The present invention relates to moving communicating field, more precisely, relate to (personal handy phone system at PHS, Personal Handset System) in the system based on PSN (PS termination number, the Personal Station Number) extended coding and the method for the mobile phone that adopts described extended coding being carried out paging.
Background technology
In the PHS system, traditional PSN coding has adopted the binary coding that is made of 12 positions (unless point out specially, " position " herein all refers to binary four hytes).And include 13 positions in the existing beep-page message content, be used for the PSN coding of terminal.Fig. 1 is in the existing system, the format analysis figure of beep-page message.Wherein, the whole piece beep-page message occupies 8*8-2=62 bit.PS (personal device, Personal Station) termination number takies 13 positions altogether, and its length is the 13*4=52 bit.Fig. 2 is the format chart of existing PSN coding rule.Wherein the 1st, 2,3,4 are used to fill in area code; The 5th H is used to fill in the code of HLR (attaching position register, Home Location Register), is used for identifying HLR different under the same area code; Remaining 7 are used to fill in the BCD running number.
But in recent years, along with the PHS network size constantly enlarges, number of users also increases fast, and under the impact of moment high traffic, it is outstanding that the problem of system resource off-capacity shows especially.This is mainly reflected in by the congested calling information drop-out that causes of paging channel.This problem can achieve a solution by the method that increases hardware resource, solves this problem as U.S. Pat P6477382 " Flexible paging for packet data " with regard to the method that has adopted the dynamic assignment channel.But this method does not fundamentally solve the problem of traffic congestion, because adopting the precondition of the method for dynamic assignment channel is to have enough hardware resources can supply to distribute, not only equipment investment is huge and increase hardware resource, and the thing followed is safeguarded also will spend lot of manpower and material resources, also can't realize in a short time.Thereby under hardware resource can't obtain immediately more news, must adopt other method to solve the problem of channel capacity deficiency.
7 BCD running numbers of prior art have taken 28 bits.Because what 7 BCD running numbers were represented is metric numeral, if represent with binary mode, then 7 shared bit numbers of BCD running number can not surpass log
29999999 ≈, 23.3 bits.That is to say that 24 bits are enough represented any 7 BCD running numbers.This shows that there is the problem of waste channel capacity in prior art.
Summary of the invention
The purpose of this invention is to provide a kind ofly, solving the congested problem of paging channel, thereby make the existing channel can the more mobile phone of paging based on the paging method and the relevant device that strengthen the PSN coding.
The invention provides a kind of method that in the base station of PHS system, sends beep-page message to mobile phone, in described PHS system with PSN code identification mobile phone, described PSN coding comprises flag bit, being used to identify described PSN coding is conventional PSN coding, still strengthen the PSN coding, described base station receives the paging bag that comprises the PSN coding, the method comprising the steps of: produce corresponding beep-page message according to the flag bit field in the PSN coding, wherein, have the paging bag that strengthens the PSN coding with two and merge into a compression paging message for having the paging bag that strengthens the PSN coding; And the paging bag for having conventional PSN coding produces non-compression paging message, and described beep-page message comprises the type code that is used to distinguish compression paging message and non-compression paging message; With send beep-page message to mobile phone, wherein said combining step comprises: the decimal number that described two 7 BCD serial numbers that have in each of the paging bag that strengthens the PSN coding are represented be transformed into binary system that 24 bits represent or with the number of binary system system of equal value so that 13 potential energies of the expression PSN in the described compression paging message enough hold through 2 binary systems of overcompression or with the serial number of binary system system of equal value.
The present invention also provides a kind of method that receives the beep-page message of base station transmission in the mobile phone of PHS system, in described PHS system with PSN code identification mobile phone, described PSN coding comprises flag bit, being used to identify described PSN coding is conventional PSN coding, still strengthen the PSN coding, described beep-page message comprises the type code that is used to distinguish compression paging message and non-compression paging message, described non-compression paging message is the beep-page message that directly comprises the PSN coding, described compression paging message is the beep-page message that two are strengthened the merging of PSN coding and obtain, and the method comprising the steps of: paging receiving message; Reduction BCD running number if wherein type code is indicated non-compression paging message, then directly takes out the BCD running number in the beep-page message, and if type code indication compression paging message then obtains two BCD running numbers by the decompression beep-page message; Relatively Hai Yuan the BCD serial number and the loCal number of mobile phone; If with the result that a comparison is arranged is to mate, then starts called response, otherwise abandon beep-page message.
The present invention also provides a kind of base station that sends beep-page message in the PHS system to mobile phone, in described PHS system with PSN code identification mobile phone, described PSN coding comprises flag bit, being used to identify described PSN coding is conventional PSN coding, still strengthen the PSN coding, comprising: receiving system is used to receive the paging bag that comprises the PSN coding; The message synthesizer, it produces corresponding beep-page message according to the flag bit field in the PSN coding, wherein for having the paging bag that strengthens the PSN coding, has the paging bag that strengthens the PSN coding with two and merges into a compression paging message; And the paging bag for having conventional PSN coding produces non-compression paging message, and described beep-page message comprises the type code that is used to distinguish compression paging message and non-compression paging message; And dispensing device, be used for sending beep-page message to mobile phone, the merging that wherein said message synthesizer is carried out comprises: the decimal number that described two 7 BCD serial numbers that have in each of the paging bag that strengthens the PSN coding are represented be transformed into binary system that 24 bits represent or with the number of binary system system of equal value so that 13 potential energies of the expression PSN in the described compression paging message enough hold through 2 binary systems of overcompression or with the serial number of binary system system of equal value.
The present invention also provides a kind of mobile phone that receives the beep-page message of base station transmission in the PHS system, in described PHS system with PSN code identification mobile phone, described PSN coding comprises flag bit, being used to identify described PSN coding is conventional PSN coding, still strengthen the PSN coding, described beep-page message comprises the type code that is used to distinguish compression paging message and non-compression paging message, described non-compression paging message is the beep-page message that directly comprises the PSN coding, described compression paging message is the beep-page message that two are strengthened the merging of PSN coding and obtain, comprising: receiving system is used for paging receiving message; Reduction apparatus, be used to reduce the BCD running number,, then directly take out the BCD running number in the beep-page message if wherein type code is indicated non-compression paging message, if and type code indication compression paging message then obtains two BCD running numbers by the decompression beep-page message; Comparison means, the BCD serial number that is used for relatively reducing and the loCal number of mobile phone are if the result that a comparison is wherein arranged then starts called response, otherwise abandons beep-page message for coupling.
According to the present invention, utilize enhancing PSN coding method to come the PS terminal is encoded, adopt simultaneously to discern and adopt described enhancing PSN coding method that beep-page message is carried out compression and decompression, thereby and make that a beep-page message can two base station and mobile phones that adopt above-mentioned enhancing PSN coding rules to encode of while paging.The present invention has adopted flag bit to come the mobile phone of new coding is discerned in mobile phone coding, in the base station mobile phone of new coding is carried out the transmission of message and adopts the algorithm of compressed encoding when receiving, and makes a plurality of mobile phones of same beep-page message paging simultaneously.The present invention can save channel space greatly, has solved the congestion problems of channel massage.
Description of drawings
According to understanding above and other objects of the present invention, feature and advantage more all sidedly to the description that embodiment carried out, wherein below in conjunction with accompanying drawing:
Fig. 1 schematic illustration the form of beep-page message in the existing system;
Fig. 2 schematic illustration the form of existing PSN coding rule;
Fig. 3 schematic illustration strengthen the form of PSN coding;
Fig. 4 schematic illustration adopt to strengthen the form of the beep-page message of PSN coding rule;
But Fig. 5 schematic illustration the forms of beep-page message of a plurality of enhancing of paging PSN coding of compression;
Fig. 6 is the flow chart of relevant compression paging message in the base station;
Fig. 7 is the synthetic window timer process figure of message;
Fig. 8 is a mobile phone page response flow chart;
Fig. 9 is the schematic block diagram of base station according to an embodiment of the invention;
Figure 10 is the schematic block diagram of mobile phone according to an embodiment of the invention.
Embodiment
The base station as shown in Figure 9 according to an embodiment of the invention.It will be appreciated by those skilled in the art that, for the purpose of simplifying the description, omitted other parts of base station here, because these parts and purpose of the present invention are irrelevant.
As shown in Figure 9, the PHS system comprises base station 1, CSC (base station controller) 2 and mobile phone 3.Base station 1 comprises receiver 11, message synthesizer 12 and transmitter 13.CSC 2 sends the paging bag to base station 1, contains the PSN coding in the paging bag.The receiver 11 paging receiving bags of base station 1 convert the paging bag to beep-page message by message synthesizer 12, and by transmitter 13 beep-page message are sent to mobile phone 3.
Describe in the base stations 1 processing in detail below in conjunction with Fig. 6 and 7 to the paging bag.
Fig. 6 illustrates the method that sends beep-page message in the base station according to the paging bag.In calling procedure, TS (task server, Transaction Server) obtains called PSN by user profile (user profile), by SETUP message called PSN is passed to CSC (base station controller).CSC puts called PSN in the SETUP message into and passes to the base station.This method is from step S1, and wherein message synthesizer 12 obtains the paging bag of the receiver 11 of base station 1 from CSC 2 receptions, and the type of the PSN that comprises in definite paging bag coding.PSN is divided into conventional PSN coding and strengthens the PSN coding.Strengthen the PSN coding as shown in Figure 3.This coding method is different from the method for prior art, and the main distinction is: increase a new field---New PS in new PSN, can distinguish conventional PSN coding and strengthen the PSN coding according to this sign.In a preferred embodiment, the value of New PS is 9.It will be understood by those skilled in the art that can be according to the position and the value that specifically should be used for specifying New PS, as long as can distinguish conventional PSN coding and strengthen the PSN coding.The PSN coding has just extended to as shown in Figure 3 13.
In step S2, message synthesizer 12 determines whether that two contain the paging bag that strengthens the PSN coding.If have, then advance to step S3, wherein these two paging bags are merged into a beep-page message, two mobile phones of this beep-page message paging simultaneously, its form is as shown in Figure 5.In a preferred embodiment, non-compression paging message is represented in call service type=" 001 ", call service type=" 011 " expression compression paging message.Compression method to message in the PHS system is as follows:
7 BCD running numbers are converted to binary number or other form of equal value (4,8,16,64 systems or the like are as long as it has minimum significant bit number).With hexadecimal is example, because the maximum effective length of the hexadecimal number after the conversion is no more than 24 bits, therefore preceding 4 bits in 28 bits after the conversion are 0 certainly.In the method for preferential embodiment, when carrying out paging, filter preceding 4 bits " 0000 ", thereby 7 BCD running numbers among the above-mentioned PSN just can be converted to 6 place value territories be the hexadecimal number of 0～F, take the 4*6=24 bit.For example, for 7 BCD running numbers " 1234567 ", it is " 12D687 " through the hexadecimal code after changing and filtering.Therefore, after having carried out above-mentioned compression expression method, in the beep-page message form as shown in Figure 1, be used for representing that 2 PSN just can be represented in the position of 13 BCD of PSN.
If there are not described two paging bags, then determine at step S4 whether the paging bag contains conventional PSN coding.If not, then turn back to step S1.If then produce beep-page message as shown in Figure 1.
After producing beep-page message, transmitter 13 sends beep-page message in step S5.
According to one embodiment of present invention, base station 1 also comprises flow monitor and flow comparator (not shown).In the process of receiver 11 paging receiving bags, flow monitor is measured the paging flow, and the flow comparator is compared the flow of measuring with predetermined flow threshold.If the flow of measuring surpasses flow threshold, then 12 of message synthesizers are according to the incompressible beep-page message of paging packet generation.Fig. 4 shows the form of the non-compression paging message of the mobile phone of encoding at employing enhancing PSN according to an embodiment.For the paging bag that contains conventional PSN coding, then produce beep-page message as shown in Figure 1.Like this, can enable compression method when needed according to the size of flow.In the present embodiment, may have three kinds of beep-page messages, first kind is compression paging message, at adopting the mobile phone that strengthens the PSN coding; Second kind is non-compression paging message, at adopting the mobile phone that strengthens the PSN coding; The third is non-compression paging message, at traditional mobile phone.Wherein can determine according to the call service type code whether message is compressed.The call service type code can cause conventional mobile phone to abandon compression paging message.NewPS sign can cause conventional mobile phone to be abandoned adopting the beep-page message that strengthens the PSN coding, and makes the beep-page message that adopts the mobile phone that strengthens the PSN coding to discard tradition.Yet those skilled in the art can make amendment to previously described call service type and New PS sign, to obtain same effect.So for example, the third beep-page message is only worked to conventional mobile phone, and preceding two kinds of message are only to adopting the mobile phone that strengthens the PSN coding to work.
The parts that it will be understood by those skilled in the art that above-mentioned base station can pass through single-chip, and microprocessor, logical circuit, application-specific integrated circuit (ASIC) or the like are realized, and can be programmable.
Get back to Fig. 6, have to when one contains the paging bag that strengthens the PSN coding when message synthesizer 12 occurring, method is got back to step S1 and is contained the paging bag that strengthens the PSN coding in the hope of obtaining the next one.If yet there is not described next paging bag all the time, message synthesizer 12 can be waited for always.Can cause first paging bag by long-time delayed delivery like this.In one embodiment, avoid this problem by the synthesis window timer.The operation principle of synthesis window timer as shown in Figure 7.
Fig. 7 is the synthetic window timer process figure of message.This process can be and the independently concurrent mutually process of process shown in Figure 6.Process shown in Figure 7 wherein is initialized as 0 with the window timer from step S11.Then in step S12, check the message synthesizer 12 resulting quantity that contain the paging bag that strengthens the PSN coding.In step S13, determine whether described quantity is 1 then,, then determine at step S14 whether the window timer meets or exceeds T (synthesis window time cycle) if be 1.If no, then turn back to step S12.If meet or exceed T, then do not wait for second paging bag and directly send this paging bag (step S15) according to form for example shown in Figure 4.Get back to step S13,, then turn back to step S11 if quantity is not 1.
Because there are not above-mentioned wait process in the processing of generation compression paging message and generation at the processing of the beep-page message of conventional mobile phone after obtaining the paging bag, therefore can easily the processing time be controlled at cycle stipulated time in (comprising T).With reference to the embodiment of Fig. 7 the method in cycle in control time has been described though should be noted that the front, yet also can have realized by other method.
Mobile phone as shown in figure 10 according to an embodiment of the invention.It will be appreciated by those skilled in the art that, for the purpose of simplifying the description, omitted other parts of mobile phone here, because these parts and purpose of the present invention are irrelevant.
As shown in figure 10, mobile phone 3 comprises receiver 31, reductor 32, comparator 33 or the like.Receiver 31 receives the beep-page message that the base station sends.Reductor 32 restores the PSN coding from beep-page message.And comparator 33 determines whether respond calling with decision by whether this machine of paging of beep-page messages.
Describe in the mobile phone of the present invention processing in detail below in conjunction with Fig. 8 to beep-page message.
Method shown in Figure 8 is from step S21, and wherein receiver 31 receptions of mobile phone 3 are from the beep-page message of base station.Then at step S22, reductor 32 is determined whether compressed message of message related to calls according to the call service type.If not, then in step S24, determine according to New PS sign whether beep-page message comprises enhancing PSN coding.If comprise, then take out the PSN coding, and forward step S25 to.Comprise conventional PSN coding if determine beep-page message, then abandon this beep-page message (step S26).If compression paging message, then reductor 32 goes out two BCD running numbers in step S23 parsing (decompression).When resolving, reductor 32 takes out compressed code, converts compressed code to 7 BCD running numbers from binary system or other form of equal value (4,8,16,64 systems or the like are as long as it has minimum significant bit number).
In step S25, comparator 33 is compared the BCD running number that obtains with loCal number, if a BCD running number and loCal number coupling are arranged, then starts the called operation response (step S27) of mobile phone; Otherwise abandon this beep-page message.
After handling the beep-page message of reception, handle and get back to step S21.
The parts that it will be understood by those skilled in the art that above-mentioned base station can pass through single-chip, and microprocessor, logical circuit, application-specific integrated circuit (ASIC) or the like are realized, and can be programmable.
After PSN adopted new coding, paging efficiency will improve with the increase of new cell-phone, finally improves 50%.
Suppose that the old and new's mobile phone number equates, call distribution equates that CS receives N paging bag from CSC in certain paging zone, then shared aloft paging bag M=(N/2)+(N/4)=0.75N behind the new coding of employing raises the efficiency R=(N-M)/N=25%.Various situations are as shown in the table:
| The new cell-phone ratio | Aerial paging bag | Raise the efficiency |
| 25％ | 0.875N | 12.5％ |
| 50％ | 0.75N | 25％ |
| 75％ | 0.625N | 37.5％ |
| 100％ | 0.5N | 50％ |
Although above-mentionedly according to preferred embodiment the present invention is set forth, these are described just for purpose of the present invention is described, should not be construed as any limitation of the invention.Those skilled in the art can carry out various possible modifications and improvement to the present invention, but these modifications and improve all are included in the scope and spirit of the present invention defined in the claims of enclosing.
Claims (13)
1. method that in the base station of personal handy phone system, sends beep-page message to mobile phone, in described personal handy phone system, use personal device termination number PSN code identification mobile phone, described PSN coding comprises flag bit, being used to identify described PSN coding is conventional PSN coding, still strengthen the PSN coding, described base station receives the paging bag that comprises the PSN coding, and the method comprising the steps of:
Produce corresponding beep-page message according to the flag bit field in the PSN coding, wherein, have the paging bag that strengthens the PSN coding with two and merge into a compression paging message for having the paging bag that strengthens the PSN coding; And the paging bag for having conventional PSN coding produces non-compression paging message, and described beep-page message comprises the type code that is used to distinguish compression paging message and non-compression paging message; With
Send beep-page message to mobile phone,
Wherein said combining step comprises:
The decimal number that described two 7 BCD serial numbers that have in each of the paging bag that strengthens the PSN coding are represented be transformed into binary system that 24 bits represent or with the number of binary system system of equal value so that 13 potential energies of the expression PSN in the described compression paging message enough hold through 2 binary systems of overcompression or with the serial number of binary system system of equal value.
2. the method for claim 1, wherein said enhancing PSN is encoded to 13.
3. the method for claim 1 wherein also comprises step:
The information flow-rate of paging bag in the monitoring base station; With
Relatively the flow threshold of Jian Ce flow and setting wherein when the flow of monitoring surpasses flow threshold, is carried out the described step that produces corresponding beep-page message according to the flag bit field in the PSN coding; And when the flow of monitoring did not surpass flow threshold, the step of the corresponding beep-page message of described generation also comprised the step that directly produces non-compression paging message according to the paging bag.
4. the method for claim 1, the step that wherein produces beep-page message also comprises:
After obtaining the paging bag, send beep-page message in the cycle at the appointed time.
5. method that in the mobile phone of personal handy phone system, receives the beep-page message that the base station sends, in described personal handy phone system, use personal device termination number PSN code identification mobile phone, described PSN coding comprises flag bit, being used to identify described PSN coding is conventional PSN coding, still strengthen the PSN coding, described beep-page message comprises the type code that is used to distinguish compression paging message and non-compression paging message, described non-compression paging message is the beep-page message that directly comprises the PSN coding, described compression paging message is the beep-page message that two are strengthened the merging of PSN coding and obtain, and the method comprising the steps of:
Paging receiving message;
Reduction BCD running number if wherein type code is indicated non-compression paging message, then directly takes out the BCD running number in the beep-page message, and if type code indication compression paging message then obtains two BCD running numbers by the decompression beep-page message;
Relatively Hai Yuan the BCD serial number and the loCal number of mobile phone; With
If the result that a comparison is arranged then starts called response, otherwise abandons beep-page message for coupling.
6. method as claimed in claim 5, wherein said compression paging message comprises two codes, PSN coding of each coded representation, described reduction step also comprises step:
Encode and obtain the BCD running number by the code in the described compression paging message being converted to BCD.
7. method as claimed in claim 5, wherein said reduction step also comprises step:
If determine that according to type code and flag bit mobile phone do not support the beep-page message that is received, then abandon this beep-page message.
8. base station that in personal handy phone system, sends beep-page message to mobile phone, in described personal handy phone system, use personal device termination number PSN code identification mobile phone, described PSN coding comprises flag bit, being used to identify described PSN coding is conventional PSN coding, still strengthen the PSN coding, comprising:
Receiving system is used to receive the paging bag that comprises the PSN coding;
The message synthesizer, it produces corresponding beep-page message according to the flag bit field in the PSN coding, wherein for having the paging bag that strengthens the PSN coding, has the paging bag that strengthens the PSN coding with two and merges into a compression paging message; And the paging bag for having conventional PSN coding produces non-compression paging message, and described beep-page message comprises the type code that is used to distinguish compression paging message and non-compression paging message; With
Dispensing device is used for sending beep-page message to mobile phone,
The merging that wherein said message synthesizer is carried out comprises:
The decimal number that described two 7 BCD serial numbers that have in each of the paging bag that strengthens the PSN coding are represented be transformed into binary system that 24 bits represent or with the number of binary system system of equal value so that 13 potential energies of the expression PSN in the described compression paging message enough hold through 2 binary systems of overcompression or with the serial number of binary system system of equal value.
9. base station as claimed in claim 8 wherein also comprises:
The flow monitoring device is used for the information flow-rate of monitoring base station paging bag; With
Comparison means, the flow that is used for relatively monitoring and the flow threshold of setting wherein when the flow of monitoring surpasses flow threshold, are controlled described message synthesizer and are produced corresponding beep-page message according to the flag bit field in the PSN coding; And when the flow of monitoring did not surpass flow threshold, described message synthesizer also was configured to directly produce non-compression paging message according to the paging bag.
10. base station as claimed in claim 8, wherein said message synthesizer sends beep-page message after also being formed at and obtaining the paging bag in the cycle at the appointed time.
11. mobile phone that in personal handy phone system, receives the beep-page message of base station transmission, in described personal handy phone system, use personal device termination number PSN code identification mobile phone, described PSN coding comprises flag bit, being used to identify described PSN coding is conventional PSN coding, still strengthen the PSN coding, described beep-page message comprises the type code that is used to distinguish compression paging message and non-compression paging message, described non-compression paging message is the beep-page message that directly comprises the PSN coding, described compression paging message is the beep-page message that two are strengthened the merging of PSN coding and obtain, comprising:
Receiving system is used for paging receiving message;
Reduction apparatus, be used to reduce the BCD running number,, then directly take out the BCD running number in the beep-page message if wherein type code is indicated non-compression paging message, if and type code indication compression paging message then obtains two BCD running numbers by the decompression beep-page message;
Comparison means, the BCD serial number that is used for relatively reducing and the loCal number of mobile phone are if the result that a comparison is wherein arranged then starts called response, otherwise abandons beep-page message for coupling.
12. mobile phone as claimed in claim 11, wherein said compression paging message comprises two codes, PSN of each coded representation coding, described reduction apparatus also is configured to, and encodes and obtains the BCD running number by the code in the described compression paging message being converted to BCD.
13. mobile phone as claimed in claim 11, wherein said reduction apparatus also is configured to, if determine that according to type code and flag bit mobile phone do not support the beep-page message that is received, then abandons this beep-page message.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158062A (en) * | 1995-04-18 | 1997-08-27 | 卡西欧计算机公司 | Radio communication system and radio communication terminal |
| US5896368A (en) * | 1995-05-01 | 1999-04-20 | Telefonaktiebolaget Lm Ericsson | Multi-code compressed mode DS-CDMA systems and methods |
| US6111870A (en) * | 1996-11-07 | 2000-08-29 | Interdigital Technology Corporation | Method and apparatus for compressing and transmitting high speed data |
| US6477382B1 (en) * | 2000-06-12 | 2002-11-05 | Intel Corporation | Flexible paging for packet data |
| CN1388722A (en) * | 2001-05-28 | 2003-01-01 | 深圳市中兴通讯股份有限公司上海第二研究所 | Local program downloading method and device for distributed PHS base station system |
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2004
- 2004-01-16 CN CNB2004100022596A patent/CN100473215C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158062A (en) * | 1995-04-18 | 1997-08-27 | 卡西欧计算机公司 | Radio communication system and radio communication terminal |
| US5896368A (en) * | 1995-05-01 | 1999-04-20 | Telefonaktiebolaget Lm Ericsson | Multi-code compressed mode DS-CDMA systems and methods |
| US6111870A (en) * | 1996-11-07 | 2000-08-29 | Interdigital Technology Corporation | Method and apparatus for compressing and transmitting high speed data |
| US6477382B1 (en) * | 2000-06-12 | 2002-11-05 | Intel Corporation | Flexible paging for packet data |
| CN1388722A (en) * | 2001-05-28 | 2003-01-01 | 深圳市中兴通讯股份有限公司上海第二研究所 | Local program downloading method and device for distributed PHS base station system |
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| CN1642303A (en) | 2005-07-20 |
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