CN1390410A - Access spreading in a packet data radio system - Google Patents
Access spreading in a packet data radio system Download PDFInfo
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- CN1390410A CN1390410A CN00815733.2A CN00815733A CN1390410A CN 1390410 A CN1390410 A CN 1390410A CN 00815733 A CN00815733 A CN 00815733A CN 1390410 A CN1390410 A CN 1390410A
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- 230000007480 spreading Effects 0.000 title abstract description 3
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 4
- 238000005516 engineering process Methods 0.000 description 26
- 239000006185 dispersion Substances 0.000 description 12
- 230000008859 change Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000001413 cellular effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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Abstract
A technique for spreading access attempts in a communication system entails transmitting messages from an application host to respective terminals via a packet data system, each of the messages including an access description element which specifies a time interval. Each terminal receives its respective message and generates a reply thereto. This reply is performed by making an initial uplink access on the random access channel. Once the first access is made, the network reserves radio resources for the terminal for use in conducting communication between the application host and the terminal. The initial access is transmitted following a lapse of the time interval specified in the message. The application host specifies different time intervals for different terminals. Accordingly, the access attempts made by the terminals are spread out over time to reduce congestion in the random access channel.
Description
Background of invention
The present invention relates to be used in the block data system disperse the method and system of access attempts.
GPRS (GPRS) is meant the high-speed packet data service that uses in Cellular Networks (particularly in the GSM Cellular Networks).The packet-based wave point of the overlapping existing circuit switching GSM network of GPRS.Information is sent out in grouping, and they are re-assemblied in the reception place.Radio Resource only just is used when grouping is sent out or receive.This allows a plurality of users to share Radio Resource, and this connects different with the circuit switching that each mobile data user wherein is assigned with a dedicated channel.This causes the effective use of wireless frequency spectrum.And the packet-based method of GPRS allows the no seam from the mobile personal computer to the Internet to connect.
The useful characteristic of GPRS allows the network operator to introduce many new data services in their GSM network.An application that has proposed is real-time bet.In the typical environment of bet in real time, the participant is making a bet according to meeting occurrence during this incident during the incident.For example, in real time bet can relate to by spectators in a competition game process in sports stake after the match.For example, the participant can for who will be when the next one be scored score, or whether match on the horizon (in ice hockey competition) causes goal or the like to make a bet.Other application comprises horse racing, guesses a riddle or play and bet.Relevant application is included in auction, stock jobbery, solicit audience's ballot or the like aspect bets.
The enforcement of these application may need to change radio system capacity.For example, betting in real time under the situation that many people (for example several thousand people) are (for example 10-30 second) their stake down in the very short time interval.This surge in the bet activity adds very heavy load for the resource of wireless network.Gprs system and other packet data radio system possibly can't be handled the application with these features.
For example, the potential problem of the application as betting in real time and voting is that they make to the very big peak value of number generation of the access attempts at random of system.For this point is described, consider the example of in 30 seconds, making a bet.Most of participants reply bet making during last 10 seconds of 30 second given time interval mostly.For the Typical Disposition of the access capacity at random that 40 access attempts of per second are provided, this constraints is the participant's of each sub-district numerical limitations 400.If the participant more than 400 selects to participate in bet, then Random Access Channel is owing to the access burst conflict is blocked.Should be pointed out that because same Random Access Channel is shared in all application gprs service is used for all GPRS and all delayed, and not merely just uses betting.Certainly, this situation obviously is unsatisfied for system operator.
More specifically, in having more than one user's wireless packet data systems, uplink resource is divided into two groups in conceptive (and usually actually).In the access channel group, when not having resource for its special use for a travelling carriage, this travelling carriage is carried out initial uplink and is inserted.In case finish when inserting for the first time, network keeps Radio Resource for the travelling carriage Radio Resource from the private resource channel group.In GPRS, the access channel group comprises Packet Random Access Channel (PRACH) or might comprise Random Access Channel (RACH).In GPRS, the logic channel in the private resource channel group (on up link) comprises the control channel (PACCH) and the grouping timing controlled channel (PTCCH) of packet data traffic channel (PDTCH), packet associated.
On the channel in the access channel group, the timing of the transmission from the travelling carriage to the network is at random basically.Two travelling carriages may determine to send access burst to system simultaneously independently.When this situation took place, network can not be deciphered any one access burst, thereby these two access attempts are all failed.In order to limit access interference at random, Random Access Channel must correctly limit capacity.About 20% the time greater than the net capacity of Random Access Channel when inserting the number attempted at random, the performance of system worsens sharp.This means 20% of the net capacity that effective access capacity at random approximately is a Random Access Channel.In GPRS, the effective capacity of Random Access Channel is per second 40 times and 320 times at random between the access attempts, and this depends on concrete channel configuration.In typical configuration, access capacity is not more than 40 trials of per second at random.Though it is enough using this for great majority, this is not enough when several thousand real-time bettors attempt to be linked into system simultaneously.Be presented at the overload among the RACH of gprs system on Fig. 1.As what show here, a plurality of users almost reply bet making when the off period of approaching to make a bet finishes simultaneously, surpass the RACH capacity (dotting) of the reality of wireless system thus.As mentioned above, this can cause the delay of all gprs services.More specifically, in interim in rush hour with in some time after this, may insert gprs system.
Proposed various solutions and reduced conflict in the block data system, be used for particularly preventing that traffic peak from surpassing actual RACH capacity.A simple method that reduces to conflict is the effective capacity that increases RACH by the rearranging logic channel.Yet this method has two great shortcomings.The first, RACH is designed to be excessive at the capacity that inserts between the peak.Therefore, the average utilization of RACH is very low, and expensive Radio Resource is retained and only is used for rare incident (access peak).So this solution is wasted Radio Resource very much.The second, about giving the RACH aspect, have a limit with how many allocated bandwidth.In GPRS, the current limit of setting about 320 access attempts of per second of this constraints.
Another traditional solution is the load capacity (access attempts number of times) of dynamically regulating RACH.This technology solves the shortcoming of at first mentioning in above-mentioned solution.Yet, in this solution, still exist restriction about there being how many bandwidth can primary distribution to give RACH.And the change of bandwidth is implemented by rebuilding logical control channel on the PRACH in GPRS.Thisly rebuild the interruption that causes ongoing transmission, because travelling carriage needs read system information message again.So, do not wish to change too continually the PRACH bandwidth.And dynamic solution can not be predicted following traffic load; It only responds to the heavy load that has taken place.So dynamic solution can not prevent spreading unchecked of access attempts.Solve congested in case it only helps to occur congested back.
Another kind of technology can partly be improved collision problem, and its method is by carrying out " compensation " when the access failure thereby program allows wireless system can recover behind the access peak.Briefly, according to this method, when the user does not receive the replying of first access attempts, suppose to occur conflict.Sending second in the random time interval of this user after first attempts attempts.If second attempts also failure, then make for the third time and attempting in another time of selecting at random.Can after each failure, be lengthened out in the time interval between each request, so that further be dispersed in the longer time interval inserting.Like this, insert and congestedly finally can be solved, because users before they attempt inserting again, are forced to wait for the time interval of lengthening gradually.
Yet this method also can't solve the above problems satisfactorily.For example, " compensation " can not prevent peak (thereby can not prevent to insert congested).It can only be in case congested back occurs and solve congested.And " compensation " technology is implemented in (or " being present in ") connecting system, rather than in using.So all being applied in will stand identical access dispersion and time-delay when attempting inserting this system.This means that the average delay that stands will influence all users, and be not those people relevant with real-time bet when the business of peak.This can cause voice call to be increased to unacceptable numerical value settling time.
Therefore, specified conventional method has a plurality of shortcomings.Usually, these traditional technology can not prevent insert congested: in case these technology only solve the situation that occurs after congested.The second, all application in these technique influence systems; They can not only be applied to some application and not be applied to other application.The 3rd, these traditional technology are as the part of packet data radio system rather than effective on application level.This cause use with specific packet data radio system between produce the dependence of complexity.
Brief summary of the invention
Therefore, illustrative purpose of the present invention is to be used for reducing communication system and to insert congested more effective technology and solve above-mentioned problem by providing a kind of.
This purpose be by a kind of can discrete communication the technology of access attempts in the system reach.But communication system can comprise one by the block data system liaison be coupled to the application main body of a plurality of terminals, this block data system utilizes Random Access Channel.This technology comprises message is sent to each terminal from using main body by block data system that wherein each message comprises an access explanation unit that is used for specific time interval.Each terminal receives its message separately and this is made answer.This answer is to carry out by carry out initial up link access on Random Access Channel.Insert in case carry out the first time, network is that terminal keeps Radio Resource, so that use using when communicating between main body and the terminal.The initial access after through a period of time interval by this message specifies just is sent out.Use main body for the different different time intervals of terminal regulation.Therefore, the access attempts of being made by terminal is disperseed in time.The distribution of access attempts is guaranteed: access attempts is no more than the capacity of Random Access Channel.
Present technique can be implemented on application level, and does not rely on block data system.Like this, present technique does not need to be used for the interactive any certain protocol between application level and the block data system.And, because this technology is implemented fully,, this technology do not insert those application that disperse so directly not influencing not use on application layer.
The accompanying drawing summary
Below reading in conjunction with the accompanying drawings, be easier to understand above-mentioned purpose, characteristic and advantage with other of the present invention during detailed explanation, wherein:
The distribution of access attempts during the real-time bet that Fig. 1 is presented at legacy system is used;
Fig. 2 shows the wireless network that can be used for implementing access dispersion technology of the present invention;
Fig. 3 is the flow chart that shows access dispersion technology of the present invention;
Fig. 4 is the sequential chart that is presented at a series of incidents in the example of access dispersion technology of the present invention; And
Fig. 5 shows the distribution according to access attempts in the real-time bet application of the present invention.
Preferred embodiment is described in detail
In the following description, for the purpose that illustrates rather than limit, by setting forth concrete details, so that provide to thorough understanding of the present invention.Yet, it will be apparent to those skilled in the art that the present invention also can implement with other embodiment, and do not deviate from these details.In other example, the detailed description of the method for knowing, device and circuit is omitted, in order to avoid cover description of the invention with unnecessary details.
For example, discussion is aimed at real-time bet and ballot.Yet, it will be apparent to those skilled in the art that principle discussed herein can be applied to any other block data system that can obtain advantage from reduce access channel congested.And inserting dispersion technology is to describe under the environment of GSM/GPRS system.Yet, insert dispersion technology and also can be applied to other block data system, comprise D-AMPS/EDGE, IS-95 and following broadband system (such as UMTS and CDMA2000).
Fig. 2 shows total looks of the system 1 that can implement access dispersion technology of the present invention.This system comprises application main body (or server) 4.Using main body 4 management uses.Use betting in real time, use main body 4 and be and be responsible for the regulation stake, the bet condition is sent to the application corresponding that resides in the terminal equipment 5, the server that receives the result who bets from the bet and the supervision of terminal equipment 5.The logic that is used for carrying out these tasks can be implemented with software, discrete logic circuitry or the combination of the two.
But be coupled to gprs system 7 with using main body 4 liaisons.Gprs system 7 is provided at uses communicating by letter between main body 4 and the terminal equipment 5.The structure of gprs system 7 is prescribed in TS GSM03.60, and this agreement is integrally quoted at this, for your guidance.Gprs system 7 comprises GPRS network 2, and the latter comprises Gateway GPRS Support Node (GGSN), Serving GPRS Support Node (SGSN) and GPRS base station system (GPRS BSS) again, as well known to those skilled in the art.
But be coupled to GPRS network 2 liaisons one or more GSM/GPRS base station 6.Base station 6 is passed through wireless (for example, radio frequency) but is coupled to travelling carriage 3 with communicating by letter the quilt liaison, and this travelling carriage 3 can comprise the GPRS radio frequency unit.Also direct and terminal equipment 5 interfaces of travelling carriage 3.Terminal equipment 5 can be kneetop computer, smart phone, maybe can move use and can with any miscellaneous equipment of terminal equipment 5 interfaces.Applied logic resides in the terminal equipment 5, and can implement with software, discrete logic circuitry or the combination of the two.
Fig. 3 is the flow chart that is presented at the access dispersion technology in the instantiation that real-time bet uses.At step S1, the bet application in application main body 4 is created a message (bet and propose message), and it comprises bet condition and an access description unit.Insert description unit and comprise the information when application that is used for prescribed terminal equipment 5 should reply this system.For example, insert description unit and can tell that being applied in time t transmission replys, wherein t is the random time between 10 seconds and 30 seconds after receiving bet proposal information.At step S2, bet and propose that message is transported to terminal equipment 5.At step S3, bet and propose that being displayed to the end user watches.At step S4, determine whether the user replys bet making in the preset time time limit.If at step S5, system's definite response message should send to the time of travelling carriage 3.At step S6, terminal equipment 5 submits to response message to give travelling carriage 3.At step S7, travelling carriage 3 passes through Random Access Channel connecting system at random according to the standard GPRS rules.At last, at step S8, response message is sent to uses main body 4.
According to above technology, be included in the bet proposal message inserting description unit, just can guarantee from terminal equipment 5 reply by the technology that is dispersed in fifty-fifty bet to propose after the message a preset time at interval in (for example, in an example, being about 10 to 30 seconds).Because GPRS travelling carriage 3 is to send access burst after receiving from the response message of terminal equipment 5 immediately on Random Access Channel, so access burst also was dispersed in the identical time interval.Like this, can avoid the overload of Random Access Channel.
The concrete example of the technology of Figure 4 and 5 displayed map 3.Suppose to use main body 4 and create a bet activity with bet option A and B.In the situation of this example, use main body 4 need be in 60 seconds replying from the end user.Under the situation that does not have this dispersion technology, as shown in before on Fig. 1, will there be end user's the very big risk of replying congested Random Access Channel.After adopting this dispersion technology, use main body 4 and propose to insert in the message requirement bet: the end user must receive one that selects in 20 seconds that bet after proposing message among option A and the B.And application main body 4 provides such one to insert description unit, and the bet in its indicating terminal equipment 5 is used delay transmission answer and replied to travelling carriage 3 in a random time submission that receives between 20 and 55 seconds that bet after proposing message.
More specifically, incident shown in Figure 4 is corresponding to as shown in Figure 3 step.As shown in the figure, at incident 1-3, bet and propose that message is forwarded and is displayed to the user.Bet and propose message specifies: the user has 20 second time that bet making replied.Suppose that the user is replying (as determining in the incident 4) in this time interval, send after the delay of the random time of terminal equipment 5 between and reply to travelling carriage 3 (in incident 5 and 6) through 20 and 55 seconds.When travelling carriage 5 receptions were replied, it was forwarded to application main body 4 (in incident 7 and 8) replying by gprs system immediately.
As shown in Figure 5, above-mentioned technology has bet replying is distributed in an effect in the time interval.Therefore, the business on the Random Access Channel is no more than the capacity of this channel at any time.
In a word, above-mentioned technology solves the problem that runs into effectively in highdensity access application (such as real-time bet).Opposite with traditional system, present technique is to operate on the application level, rather than block data system itself.Therefore, present technique provides a design customized for each application, so that control the access load from this specific application, thereby has avoided inserting congested.By being operated in application level, present technique can make that inserting dispersion is transparent for other application.For example, though insert the average turn-on time of disperseing to have increased this specific application, can not be subjected to any time-delay the turn-on time of other application.And because present technique is limited to application layer fully, it can be worked equally well for all packet data radio systems, and it is betting the relation that does not produce complexity between application and the packet data radio system.
As mentioned above, dispersion technology is not limited to GPRS or GMS cellular environment.For example, present technique can be used in D-AMPS/EDGE, IS-95, UMTS, UTRA, CDMA2000 system, and any packet data radio system that usually can be used for using Random Access Channel.And present technique may be used on the network of other type, comprises the network (for example, not using the network of radio communication) with hard wired links.
Those skilled in the art it will be appreciated that the various change examples of the principle that belongs to above-mentioned.All such change examples and modification all are looked at as in the spirit and scope of the present invention that belong to by following claim regulation.
Claims (14)
1. be used to reduce to insert congested method in the communication system, this communication system comprises the application main body, but it by the block data system liaison be coupled at least one terminal, described block data system utilizes Random Access Channel, said method comprising the steps of:
Message is sent to described terminal from using main body by block data system, and described message comprises the access description unit of a specific time interval;
Receive message in end;
In end this message is produced answer; And
After the time interval, this Random Access Channel of answering by block data system is sent to the application main body through defined in the message.
2. according to the method for claim 1, further comprising the steps of: as to stipulate the time interval relevant in this wise, so that it is different from another time interval relevant with another terminal with described terminal.
3. according to the method for claim 1, further comprising the steps of: as to produce a numerical value randomly, and calculate the described time interval according to the numerical value that this produces at random.
4. according to the process of claim 1 wherein that described message transmits the item that bet is proposed.
5. according to the method for claim 4, wherein bet an item scheduled time of regulation of proposing, can answer bet proposal this time user.
6. according to the process of claim 1 wherein that block data system is the GPRS block data system.
7. according to the process of claim 1 wherein that block data system comprises a communication network, but this communication network use radio communication through the base station liaison be coupled to travelling carriage, and described at least one terminal is coupled to travelling carriage.
8. a communication system comprises
Use main body;
At least one terminal;
Block data system is coupled to an application main body liaison described at least one terminal but it uses Random Access Channel;
The message formation logic, it is set at uses in the main body, is used to generate a message, and this message is sent to terminal from using main body by block data system, and this message comprises an access description unit that is used for specific time interval;
Answer formation logic, be set in the terminal, be used to generate an answer, and behind a period of time interval, this Random Access Channel of answering by block data system is sent to the application main body through defined in the message.
9. according to the system of claim 8, wherein the message formation logic is stipulated the time interval relevant with this terminal in this wise, so that it is different from another time interval relevant with another terminal.
10. according to the system of claim 8, wherein the message formation logic produces a numerical value randomly, and calculates the described time interval according to the numerical value that this produces at random.
11. according to the system of claim 8, wherein said message transmits the item that bet is proposed.
12. according to the system of claim 11, wherein bet an item scheduled time of regulation of proposing, can answer bet proposal this time user.
13. according to the system of claim 8, wherein block data system is the GPRS block data system.
14. according to the system of claim 8, wherein block data system comprises a communication network, but its use radio communication through the base station liaison be coupled to travelling carriage, and described at least one terminal is coupled to travelling carriage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US44027899A | 1999-11-15 | 1999-11-15 | |
| US09/440,278 | 1999-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1390410A true CN1390410A (en) | 2003-01-08 |
Family
ID=23748140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00815733.2A Pending CN1390410A (en) | 1999-11-15 | 2000-10-31 | Access spreading in a packet data radio system |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1230763A2 (en) |
| JP (1) | JP2003515274A (en) |
| CN (1) | CN1390410A (en) |
| AU (1) | AU1564201A (en) |
| WO (1) | WO2001037494A2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347999C (en) * | 2005-10-28 | 2007-11-07 | 清华大学 | Method for connecting service process with service pre-process in network |
| CN100362821C (en) * | 2003-11-21 | 2008-01-16 | 北京邮电大学 | Method for improving heavyload performance of energy-saving mechanism in wireless local area network |
| CN100481803C (en) * | 2004-02-13 | 2009-04-22 | 香港应用科技研究院有限公司 | Busy tone for wireless networks |
| CN101971693A (en) * | 2008-01-23 | 2011-02-09 | 华为技术有限公司 | Method and apparatus for transmitting data |
| CN101523964B (en) * | 2006-09-13 | 2012-01-11 | 艾利森电话股份有限公司 | Arrangement and method for contention-based multi-access in a wireless communication system |
| CN101632243B (en) * | 2007-01-19 | 2014-05-07 | 株式会社Ntt都科摩 | Base station device, mobile station, mobile communication system, and communication control method |
| CN105101370A (en) * | 2015-07-29 | 2015-11-25 | 青岛海尔智能家电科技有限公司 | Data connection method and device, and WIFI module |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030001462A (en) | 2000-05-01 | 2003-01-06 | 씨에프피에이치, 엘. 엘. 씨. | Real-time interactive wagering on event outcomes |
| KR100438824B1 (en) * | 2001-08-23 | 2004-07-05 | 삼성전자주식회사 | Methods for compensating propagation delay in point-to-multipoint data communication networks |
| JP2004289717A (en) * | 2003-03-25 | 2004-10-14 | Mitsubishi Electric Corp | Random access control method, base station, and terminal device |
| US7341517B2 (en) | 2003-04-10 | 2008-03-11 | Cantor Index, Llc | Real-time interactive wagering on event outcomes |
| US7890396B2 (en) | 2005-06-07 | 2011-02-15 | Cfph, Llc | Enhanced system and method for managing financial market information |
| AU2005253141A1 (en) | 2004-06-07 | 2005-12-22 | Cfph, Llc | System and method for managing financial market information |
| EP1820298B1 (en) * | 2004-11-03 | 2009-09-23 | Telefonaktiebolaget LM Ericsson (publ) | Method and device for performance optimisation of a data distribution network |
| US8562422B2 (en) * | 2006-09-28 | 2013-10-22 | Cfph, Llc | Products and processes for processing information related to weather and other events |
| CN102088729B (en) * | 2009-12-02 | 2014-06-25 | 华为技术有限公司 | Network access method, device and system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5729542A (en) * | 1995-06-28 | 1998-03-17 | Motorola, Inc. | Method and apparatus for communication system access |
| US6031832A (en) * | 1996-11-27 | 2000-02-29 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for improving performance of a packet communications system |
-
2000
- 2000-10-31 CN CN00815733.2A patent/CN1390410A/en active Pending
- 2000-10-31 AU AU15642/01A patent/AU1564201A/en not_active Abandoned
- 2000-10-31 EP EP00978156A patent/EP1230763A2/en not_active Withdrawn
- 2000-10-31 WO PCT/SE2000/002133 patent/WO2001037494A2/en not_active Application Discontinuation
- 2000-10-31 JP JP2001538341A patent/JP2003515274A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100362821C (en) * | 2003-11-21 | 2008-01-16 | 北京邮电大学 | Method for improving heavyload performance of energy-saving mechanism in wireless local area network |
| CN100481803C (en) * | 2004-02-13 | 2009-04-22 | 香港应用科技研究院有限公司 | Busy tone for wireless networks |
| CN100347999C (en) * | 2005-10-28 | 2007-11-07 | 清华大学 | Method for connecting service process with service pre-process in network |
| CN101523964B (en) * | 2006-09-13 | 2012-01-11 | 艾利森电话股份有限公司 | Arrangement and method for contention-based multi-access in a wireless communication system |
| CN101632243B (en) * | 2007-01-19 | 2014-05-07 | 株式会社Ntt都科摩 | Base station device, mobile station, mobile communication system, and communication control method |
| CN101971693A (en) * | 2008-01-23 | 2011-02-09 | 华为技术有限公司 | Method and apparatus for transmitting data |
| CN105101370A (en) * | 2015-07-29 | 2015-11-25 | 青岛海尔智能家电科技有限公司 | Data connection method and device, and WIFI module |
| CN105101370B (en) * | 2015-07-29 | 2021-05-14 | 青岛海尔智能家电科技有限公司 | Data connection method and device and WIFI module |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1230763A2 (en) | 2002-08-14 |
| JP2003515274A (en) | 2003-04-22 |
| AU1564201A (en) | 2001-05-30 |
| WO2001037494A3 (en) | 2001-12-06 |
| WO2001037494A2 (en) | 2001-05-25 |
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