CN101331784B - Radio base station, radio communication terminal, radio communication system, and radio communication method - Google Patents

Radio base station, radio communication terminal, radio communication system, and radio communication method Download PDF

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Publication number
CN101331784B
CN101331784B CN200680044545.6A CN200680044545A CN101331784B CN 101331784 B CN101331784 B CN 101331784B CN 200680044545 A CN200680044545 A CN 200680044545A CN 101331784 B CN101331784 B CN 101331784B
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base station
wireless base
traffic rate
wireless
threshold value
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CN101331784A (en
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河野健治
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Kyocera Corp
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Kyocera Corp
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Priority claimed from JP2005342180A external-priority patent/JP4721883B2/en
Priority claimed from JP2005366233A external-priority patent/JP4711821B2/en
Application filed by Kyocera Corp filed Critical Kyocera Corp
Priority claimed from PCT/JP2006/323333 external-priority patent/WO2007060996A1/en
Publication of CN101331784A publication Critical patent/CN101331784A/en
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Abstract

When a radio communication terminal (300) performs a handoff from a radio base station (100) to a radio base station (200), the radio base station (100) reports a communication level of an application being executed by a radio communication terminal (300) to the radio base station (200). The radio base station (200) transmits information for controlling an upstream communication speed from the radio communication terminal (300) in accordance with the communication level to the radio communication terminal (300). The radio communication terminal (300) controls the upstream communication speed in accordance with the information reported from the radio base station (200).

Description

Wireless base station, wireless communication terminal, wireless communication system and wireless communications method
Technical field
The present invention relates to wireless base station, wireless communication terminal and wireless communication system in a kind of wireless communication system that is applicable to the combination that comprises various wireless base stations with different communication ability.
In addition, the invention still further relates to a kind of wireless communication terminal and a kind of wireless communications method, be used for increasing or reduce higher limit step by step so that reverse link communication speed is controlled based on probability.
Background technology
In CDMA2000 1xEV-DO (to call 1xEV-DO in the following text) system, the data communication rates of wireless communication terminal (like mobile phone) is controlled according to following aspect: " RAbit (Reverse Activity the bit) " information that is used for representing increasing or reducing the instruction of traffic rate higher limit; And the threshold value confirmed when setting up of session, this information from base station sent in each predetermined moment.
Fig. 1 is that the data communication rates that is applicable to 1xEV-DO system (for example, " 4.0 editions 8.5.6.1.5.2 joints of cdma2000 High Rate Packet Data air interface 3GPP2 C.S0024 rate controlled ", 3GPP2, in October, 2002) changes test chart.As shown in Figure 1, in 1xEV-DO, for the higher limit of data communication rates has been set five kinds of rank: 9.6kbps; 19.2kbps; 38.4kbps; 76.8kbps and 153.6kbps.When wireless communication terminal had just begun to communicate with the wireless base station, (9.6kbps) began to communicate with minimum traffic rate.After this, wireless communication terminal receives the RAbit that send the base station, and according to the RAbit adjustment traffic rate that receives.
RAbit is a bit value, changes according to the base station of the current connection of wireless communication terminal and the Congestion Level SPCC of switching target adjacent base station.Base station congestion is meant that a large amount of wireless communication terminals concentrated area is connected to the situation of this base station, the perhaps congested crowded situation of communication line generation that can also refer to be connected to this base station, or analogue.
Communication in the base station is not congested, and promptly in the time might improving traffic rate, RAbit is set to " 0 ".On the other hand, the traffic congestion in judging the base station, in the time of promptly had better not improving traffic rate, RAbit is set to " 1 ".
Fig. 2 is a width of cloth flow chart, shows the process that is used to change data communication rates of the wireless communication terminal execution of supporting 1xEV-DO.
Support the wireless communication terminal (to call wireless communication terminal in the following text) of 1xEV-DO originally to begin to communicate (step 9001) with minimum traffic rate (9.6kbps).
When receiving RAbit, wireless communication terminal just judges whether the RAbit that receives is " 1 " (step 9002).If wireless communication terminal judges that RAbit is " 0 " (" being ") in the step 9002, wireless communication terminal just improves a rank with the higher limit of current traffic rate.In this case, be mode, rather than, improve traffic rate with absolute mode with probability.
At first, wireless communication terminal produces a random number x (0＜x＜1) (step 9003).Then, wireless communication terminal judges that whether the random number that generates is less than changing the threshold value α (9004) that traffic rate will be used.Here, as shown in Figure 1, threshold value α changes with current traffic rate.For example, when higher limit will increase a rank, when 9.6kbps was increased to 19.2kbps, threshold value had just become a usefulness " 48 " and has removed the value that " 255 " obtain, i.e. " 48/255 ".In this example, wireless communication terminal judge random number be greater than or less than " 48/255 ".
If wireless communication terminal judges that random number is equal to or greater than threshold value α (" being " in the step 9004), wireless communication terminal just improves a rank (step 9005) with the higher limit of current traffic rate.For example, if the higher limit of current traffic rate is 9.6kbps, wireless communication terminal is just brought up to higher limit than high other 19.2kbps of level of current rank.On the other hand, if wireless communication terminal is judged random number less than threshold value α (" denying " in the step 9004), wireless communication terminal is with regard to the higher limit that makes current traffic rate remain unchanged (step 9006).For example, if the higher limit of current traffic rate is 9.6kbps, wireless communication terminal just remains on 9.6kbps with higher limit.
On the other hand, if wireless communication terminal judges that RAbit is " 1 ", wireless communication terminal just reduces a rank with the higher limit of current traffic rate.Particularly, wireless communication terminal produces a random number x (0＜x＜1) (step 9007), and random number x is compared (step 9008) with threshold value α '.If wireless communication terminal is judged random number x less than threshold value α ' (" being " in the step 9008), wireless communication terminal just reduces a rank (step 9009) with the higher limit of current traffic rate.For example, if the higher limit of current traffic rate is 19.2kbps, wireless communication terminal just is reduced to higher limit than low other 9.6kbps of level of current rank.On the other hand, be equal to or greater than threshold value α ' (" denying " in the step 9008) if wireless communication terminal is judged random number, wireless communication terminal is with regard to the higher limit that makes current traffic rate remain unchanged (step 9006).For example, if the higher limit of current traffic rate is 19.2kbps, wireless communication terminal just remains on 19.2kbps with higher limit.
As stated; In the 1xEV-DO system; Wireless communication terminal is controlled the higher limit of the traffic rate of reverse link communication at least; So that the threshold value of confirming according to the RAbit that sends in each predetermined moment by the base station and when between wireless communication terminal and base station, setting up session, perhaps higher limit is improved or reduce a rank, perhaps make it remain unchanged.
Coincidence be, developing CDMA2000 1xEV-DO rev.A (to call 1xEV-DO rev.A in the following text) at present, the latter expands the communication mechanism of above-mentioned 1xEV-DO (to call 1xEV-DO rev.0 in the following text).In 1xEV-DO rev.A, increased the function of QoS (service quality) control newly.According to QoS control, for each is executed in the packet allocation priority of the application on the wireless communication terminal, the higher grouping of priority is at first transmitted.Particularly, need not to carry out and above-mentionedly control the process of traffic rate step by step, just can fixedly be executed in the required traffic rate of application on the wireless communication terminal from communicating by letter at the very start with probabilistic manner.In addition, in communication process, can relatively freely change traffic rate according to using required traffic rate.
Summary of the invention
If support the wireless communication terminal of 1xEV-DO rev.A to switch to the base station of supporting 1xEV-DOrev.0; And this moment, wireless communication terminal was carried out an application that the communication link between the base station of terminal and support 1xEV-DO rev.A is connected to the given pace requirement; Perhaps; If support the wireless communication terminal of 1xEV-DO rev.A carrying out an application that the given pace of communicating by letter between the base station of terminal and support 1xEV-DO rev.0 is required, wireless communication terminal begins communication with regard to having in initial speed with 9.6kbps, and; Do not increase test if do not carry out above-mentioned traffic rate, just can't obtain required traffic rate based on probability.Yet; In aforementioned prior art; Owing to only a threshold value α is provided for each traffic rate (higher limit); Therefore, when improving or reducing the communication connection that certain required communication rate is arranged and do not allow to delay time, control according to same probability with the traffic rate that the communication that allows to communicate with low rate is connected.
The example of an IP phone for example, will be described below.In IP phone, form IP grouping (VoIP) with speech data, and utilize conventional IP network that the IP grouping is sent to the opposing party.Owing to do not use special speech network (circuit-switched network), therefore in network path, be easy to produce time delay.Yet because application type is voice communication, thereby in standard, permissible delay does not surpass a certain period.In other words; Though generally speaking need 70 to 80kbps traffic rate; But in 1xEV-DO rev.0, always begin to communicate, and need carry out three above-mentioned traffic rates at least and increase test and could obtain required traffic rate with the speed of 9.6kbps.In fact, the test of aforementioned communication rate increase receives probability control, and therefore, traffic rate is high more, and the probability that then allows traffic rate to increase is just low more.Thereby, just must be in order to obtain required traffic rate repeatedly through test.IP divides into groups so produces " time-delay ".
In addition, IP phone has adopted " voice activation detection " technology, and the latter's target is not send the mode of data (that is, not sending data in quiet period) from the side of mourning in silence, to realize the efficient utilization of bandwidth.For example, when the user was listening the opposing party to talk, wireless communication terminal did not send speech data (IP grouping), when the user begins to talk, begins transmitting audio data again.Particularly, call out if wireless communication terminal has been carried out an IP phone according to 1xEV-DO rev.0 standard, then in communication process, when the user began to talk, reverse link communication speed is 9.6kbps always.In addition, because above-mentioned traffic rate increases the cause of test, need before reaching required traffic rate fully, spend some times.In other words, when the user begins to talk, always produce time-delay.
For this reason; An object of the present invention is to provide a kind of wireless base station, wireless terminal and wireless communication system; Can under the prerequisite of the service quality that does not reduce the application of carrying out, carry out from distributing the wireless base station of expecting reverse link communication speed to the switching of controlling the wireless base station of traffic rate through the higher limit that changes traffic rate step by step.
In addition; An object of the present invention is to provide a kind of wireless terminal and wireless communications method; Can be through prepare the method for a plurality of values for the threshold value α that is used to control increase or reduce traffic rate; With higher probability increase the traffic rate of the communication connection of higher required communication rate is arranged, and can avoid the decline of communications applications service quality.
In addition; An object of the present invention is to provide a kind of wireless communication terminal and wireless communications method; The reverse link communication speed that can not allow with higher probability increase to delay time and have the communication of higher required communication rate to connect, and can avoid the decline of communications applications service quality.
For solving foregoing problems, first kind of scheme of the present invention is summarised as a kind of communication terminal, comprising: memory cell, configuration is used to store a plurality of threshold values that are used to change the traffic rate higher limit, wherein sets each traffic rate higher limit step by step; And controller, configuration be used for according to the application that will carry out, from memory cell, select the reverse link communication speed corresponding threshold value required, and control the reverse link communication speed of said application according to the threshold value of choosing with said application.
Second kind of scheme of the present invention is summarised as a kind of wireless communication terminal; Comprise: the unit is set; Configuration is used for setting a plurality of communications settings to the wireless base station; Said communications setting is defined as the threshold value that is used to change the traffic rate higher limit with the optimal value of each application, wherein sets each traffic rate higher limit step by step; And controller, configuration be used to utilize based on the communications setting of the application that will start, control to the reverse link communication speed of wireless base station.
The third scheme of the present invention is summarised as the wireless communication terminal according to first kind of scheme, and controller will be informed the wireless base station according to the threshold value that the required reverse link communication speed of application is chosen when carrying out application.
The 4th kind of scheme of the present invention is summarised as a kind of wireless communications method, comprises: be provided for changing a plurality of threshold values of traffic rate higher limit, wherein set each traffic rate higher limit step by step; According to wireless communication terminal the application that will carry out, select and the required corresponding threshold value of reverse link communication speed of said application; And, control the reverse link communication speed of said application according to the threshold value of choosing.
The 5th kind of scheme of the present invention is summarised as a kind of wireless communications method; Comprise: to setting a plurality of communications settings in the wireless base station; Said communications setting is defined as the threshold value that is used to change the traffic rate higher limit with the optimal value of each application, wherein sets each traffic rate higher limit step by step; And utilize based on the communications setting of the application that will start, control to the reverse link communication speed of wireless base station.
The 6th kind of scheme of the present invention is summarised as a kind of wireless communication terminal; Comprise: memory cell; Configuration is used to store the threshold value that is used to change the traffic rate higher limit, simultaneously said threshold value is associated with application, wherein sets each traffic rate higher limit step by step; And controller, configuration be used for according to carry out should be used for selecting the threshold value that is associated with said application, and control the reverse link communication speed of said application according to the threshold value of choosing.
The 7th kind of scheme of the present invention is summarised as the wireless communication terminal according to the 6th kind of scheme; Also comprise: receiver; Configuration is used for being received in that the wireless base station is provided with, as to be used to change traffic rate higher limit threshold value from the wireless base station, wherein sets each traffic rate higher limit step by step; And notification unit, configuration is used to notify the wireless base station, and the threshold value that receiver receives will be used to control reverse link communication speed by controller.
The 8th kind of scheme of the present invention is summarised as a kind of wireless communications method, comprises: storage be used to change the traffic rate higher limit threshold value, simultaneously said threshold value is associated with application, wherein set each traffic rate higher limit step by step; Be received in the threshold value that is provided with the wireless base station, be used to change the traffic rate higher limit from the wireless base station, wherein set each traffic rate higher limit step by step; The notice wireless base station, the threshold value that receives will be used to control reverse link communication speed, simultaneously select the threshold value of storing with said association according to should being used for of will carrying out of institute; And the reverse link communication speed of controlling said application according to the threshold value of choosing.
The 9th kind of scheme of the present invention is summarised as a kind of wireless base station, comprises: memory cell, configuration is used to store a plurality of threshold values that are used to change the traffic rate higher limit, wherein sets each traffic rate higher limit step by step; Receiver, configuration are used for from the information of the required reverse link communication speed of the performed application of another wireless communication terminal that wireless base station reception is represented and said another wireless base station carries out radio communication; And notification unit; Configuration is used for obtaining from memory cell the corresponding threshold value of information of the reverse link communication speed that receives with receiver, the said application of expression is required; And when wireless communication terminal is carried out the switching from said another wireless base station to said wireless base station, the threshold value of choosing is informed wireless communication terminal.
The of the present invention ten kind of scheme is summarised as a kind of wireless base station, comprises: receiver, configuration are used for receiving from wireless communication terminal the information of the required reverse link communication speed of the performed application of expression wireless communication terminal; And notification unit; Configuration is used for when wireless communication terminal is carried out the switching from said wireless base station to another wireless base station, said another wireless base station of information notification of the reverse link communication speed that the application that receiver is received, the expression wireless communication terminal is performed is required.
The 11 kind of scheme of the present invention is summarised as a kind of wireless communication terminal, comprises: transmitter, configuration be used for to the wireless base station send expression the information of the required reverse link communication speed of the application that will carry out; Receiver; Configuration is used for when carrying out from the wireless base station of communication with it the switching of another wireless base station; From the wireless base station receive threshold of communication with it, said threshold value is to each higher limit of traffic rate and definite, and is used to change the higher limit of setting step by step; And controller, configuration is used for controlling according to the threshold value that receiver receives the reverse link communication speed of said application.
The 12 kind of scheme of the present invention is summarised as a kind of wireless communication system, comprises: first wireless base station, can be according to being used for the reverse link communication speed that allotment period hopes; Second wireless base station, configuration is used for controlling the reverse link communication speed of said application through changing the higher limit of reverse link communication speed step by step; And wireless communication terminal; Can communicate with first wireless base station and second wireless base station; Wherein first wireless base station comprises: receiver, configuration are used for when wireless terminal is carried out said application, receiving the information of the required reverse link communication speed of the said application of expression; And notification unit; Configuration is used for when wireless communication terminal is carried out the switching from first wireless base station to second wireless base station; Information notification second wireless base station of the reverse link communication speed that receiver is received, the said application of expression is required; Second wireless base station comprises: memory cell, and configuration is used to store a plurality of threshold values that are used to change the traffic rate higher limit, wherein sets each traffic rate higher limit step by step; Receiver, configuration are used for receiving from first wireless base station information of the required reverse link communication speed of the performed application of expression wireless communication terminal; And notification unit; Configuration is used for obtaining from memory cell the corresponding threshold value of information of the reverse link communication speed that receives with receiver, the said application of expression is required; And when wireless communication terminal is carried out the switching from first wireless base station to second wireless base station; The threshold value of choosing is informed wireless communication terminal, and wireless communication terminal comprises: transmitter, configuration be used for to first wireless base station send expression the information of the required reverse link communication speed of the application that will carry out; Receiver, configuration are used for when the switching of carrying out from first wireless base station to second wireless base station, receiving the threshold value of determining according to the information of the expression reverse link communication speed of knowing from second wireless base station; And controller, configuration is used for after the switching that executes from first wireless base station to second wireless base station, and the threshold value that receives according to receiver is controlled the reverse link communication speed of said application.
Description of drawings
Fig. 1 shows traditional traffic rate and changes test chart.
Fig. 2 one width of cloth flow chart shows the workflow that the conventional wireless communication terminal traffic rate changes.
Fig. 3 is the whole schematic configuration view according to the wireless communication system of first embodiment of the invention.
Fig. 4 is the function frame assumption diagram according to the wireless base station of first embodiment of the invention.
Fig. 5 is according to the system controller of the wireless base station of first embodiment of the invention and the detailed functional block diagram of system storage.
Fig. 6 is according to the system controller of the wireless base station of first embodiment of the invention and the detailed functional block diagram of system storage.
Fig. 7 is the functional block diagram according to the wireless communication terminal of first embodiment of the invention.
Fig. 8 is according to the system controller of the wireless communication terminal of first embodiment of the invention and the detailed functional block diagram of system storage.
Fig. 9 shows the example that changes test chart according to the traffic rate of first embodiment of the invention.
Figure 10 is a width of cloth flow chart, shows the workflow according to the wireless base station of first embodiment of the invention.
Figure 11 is a width of cloth flow chart, shows the workflow according to the wireless base station of first embodiment of the invention.
Figure 12 is a width of cloth flow chart, shows the workflow according to the wireless communication terminal of first embodiment of the invention.
Figure 13 is the frame assumption diagram according to the wireless communication terminal of second embodiment of the invention.
Figure 14 shows the example that changes test chart according to the traffic rate of second embodiment of the invention.
Figure 15 shows the workflow according to the wireless communication terminal of second embodiment of the invention.
Figure 16 is according to the wireless communication terminal of the modified example of second embodiment of the invention and the frame assumption diagram of wireless base station.
Figure 17 shows the example that changes test chart and communications setting according to the wireless communication rate of the modified example of second embodiment of the invention.
Figure 18 is a width of cloth flow chart, shows the workflow according to the wireless communication terminal of the modified example of second embodiment of the invention.
Figure 19 is according to the wireless communication terminal of third embodiment of the invention and the signal frame assumption diagram of wireless base station.
Figure 20 is according to the system controller of third embodiment of the invention and the detailed functional block diagram of system storage.
Figure 21 is according to the system controller of third embodiment of the invention and the detailed functional block diagram of system storage.
Figure 22 shows the example that changes test chart according to the traffic rate of third embodiment of the invention.
Figure 23 is a width of cloth flow chart, shows the workflow according to the wireless communication terminal of third embodiment of the invention.
Embodiment
Below, will specify embodiments of the invention.
" first embodiment "
Fig. 3 is the whole schematic configuration view according to the wireless communication system of first embodiment of the invention.
Wireless communication system 10 shown in Figure 3 is configured to comprise a plurality of wireless base stations (base station 100 and 200) and wireless communication terminal 300.It should be noted that the quantity of the wireless base station that constitutes wireless communication system 10 and wireless communication terminal is not limited to the quantity of wireless base station shown in Figure 3 and wireless communication terminal.
Wireless communication system 10 is the wireless communication systems that meet the CDMA2000 scheme, and adopts multiple scheme with different communication ability as data communication package.
Particularly, 1xEV-DO rev.0 (to call rev.0 in the following text) and 1xEV-DO rev.A (to call rev.A in the following text) have been adopted.In addition, the rev.0 reverse link has reached the data rate of 153.6kbps, and forward link has reached the data rate of about 2.4Mbps, and the rev.A reverse link has reached the data rate of 1.8Mbps, and forward link has reached the data rate of about 3.1Mbps.
Base station 100 is base stations of supporting rev.0 and rev.A.Base station 200 is base stations of only supporting rev.0. Base station 100 and 200 has formed sub-district C100 and C200 respectively.
Wireless communication terminal 300 is terminal equipments of supporting rev.0 and rev.A, and communicates with wireless base station 100 and 200.
Fig. 4 is the frame assumption diagram of base station 100.
As shown in Figure 4, base station 100 has been equipped: RF unit 110, system controller 120 and system storage 130.
RF unit 110 receives the cdma wireless signals to wireless communication terminal 300 transmissions and from wireless communication terminal 300.In addition, the conversion of wireless signal to baseband signal also carried out in RF unit 110, and to system controller 120 transmissions or from system controller 120 receiving baseband signals.
The types of functionality that system controller 120 control base stations 100 are contained.After a while the more detailed functional block diagram to the system controller relevant with present embodiment 120 is explained.
Control in the system storage 130 storage base stations 100 or similar functions the various information that will use.After a while the more detailed functional block diagram to the system storage relevant with present embodiment 130 is explained.
It should be noted that the wireless base station 200 of only supporting rev.0 also has with wireless base station shown in Figure 4 100 identical functions square frames disposes.
Fig. 5 is the system controller 120 of wireless base station 100 and the detailed functions frame assumption diagram of system storage 130.
As shown in Figure 5, the system controller 120 of wireless base station 100 has been equipped: data communication units 121, switching identifying unit 122, switching performance element 123 and communication rank notification unit 124.
In addition, system storage 130 has been equipped: adjacent base station storage of versions unit 131 and communication rank memory cell 132.
The processing that data communication units 121 execution are relevant with the communication of image, music or similar content, or send and receive all kinds of control informations.
Fig. 6 is the system controller 120 ' of wireless base station 200 and the detailed functions frame assumption diagram of system storage 130 '.
It should be noted that the explanation that to omit the part configuration of the system controller 120 identical with the system controller of wireless base station 100 120.
As shown in Figure 6, the system controller 120 ' of wireless base station 200 has been equipped: data communication units 121, switching identifying unit 122, switching performance element 123, traffic rate change test chart notification unit 125 and RAbit generator 126.
In addition, system storage 130 ' has been equipped: communication rank memory cell 132, traffic rate test chart memory cell 133.
The traffic rate that is stored in the traffic rate variation test chart memory cell 133 has been shown here, and has changed test chart 150 in Fig. 9.
In Fig. 9; Traffic rate changes test chart 150 and is with the difference that conventional rate changes test chart: the former provides a plurality of the communicate by letter ranks relevant with each higher limit of each reverse link communication speed, has also supplied the threshold value of an above-mentioned probability inspection indescribably for each communication stage.
It should be noted that other value of each communication stage is to be provided with according to the required traffic rate of application in the communication rank notification unit 124.In the present embodiment, for each higher limit of each traffic rate, be provided with from 1 to 4 four kind of communication class value under the state.Yet, the communication stage method for distinguishing is set is not limited thereto.For each higher limit of each traffic rate, can under three kinds of states, be provided with should value.In addition, can also different state (for example, for 9.6kbps is provided with four kinds of ranks, for 19.2kbps is provided with three kinds of ranks or the like) be set for each higher limit.Naturally, the value of threshold value α is not limited to value used in the present embodiment.
Change test chart 150 according to traffic rate; If judge that when RAbit=0 (if promptly might improve traffic rate) the communication rank of using is " 1 "; So for example because the pairing threshold value α of communication rank " 1 " under the 9.6kbps speed is " 255/255 "; Thereby α >=x (0＜x＜1) is always very (probability 100%), therefore always the upper limit of traffic rate brought up to other 19.2kbps of next stage.Equally, because the threshold value α under 19.2kbps and the 38.4kbps speed is " 255/255 ",, then always higher limit is brought up to next rank if therefore the communication rank is " 1 ".
Particularly, change test chart 150 according to traffic rate, defined the communication rank and it is set to the application of " 1 " for one, the higher limit of traffic rate is bound to after having carried out three inspections, bring up to 76.8kbps.
In addition; If RAbit=1 (had better not improve traffic rate); And the communication rank of using is " 1 "; So because the pairing threshold value α of communication rank " 1 " always " 0/255 " under the 76.8kbps speed, thereby α >=x (0＜x＜1) is always false (probability 0%), therefore can traffic rate be maintained 76.8kbps.
Fig. 7 is the frame assumption diagram of wireless communication terminal 300.
As shown in Figure 7, wireless communication terminal 300 has been equipped: RF unit 310, system controller 320 and system storage 330, display unit 340 and keyboard input unit 350.
RF unit 310, system controller 320 and system storage 330 provide RF unit 110, system controller 120 and system storage 130 identical functions with base station 100 respectively.
Display unit 340 shows picture material or the similar content of utilizing RF unit 310 and system controller 320 to receive, perhaps display operation content (telephone number of input, address or similar content).
Keyboard input unit 350 is configured to comprise: ten buttons, function key or similar buttons, it be user's input operation content the interface that will use.
Fig. 8 is the detailed functions frame assumption diagram of system controller 320 and system storage 330.
As shown in Figure 8, system controller 320 has been equipped: data communication units 321, switching identifying unit 322, switching performance element 323, traffic rate are provided with unit 324, randomizer 325 and random number/table of random numbers comparing unit 326.
In addition, system storage 330 has been equipped: traffic rate changes test chart memory cell 331 and communication rank memory cell 332.
Data communication units 321 is sent a RouteUpdate message (candidate base station notice) to the handover source base station of carrying out data communication; This message is used for several base stations and is set to handover-target base station; In these handover-target base station, comprise a base station, the communication capacity of this base station is different from the base station of carrying out data communication.
In addition, data communication units 321 receives the regular RAbit that sends in the wireless base station of supporting rev.0.
Switch identifying unit 323 and judge whether comprise the base station that communication capacity is different from handover source base station in the switching target candidate base station.
Traffic rate is provided with unit 324 according to performed application setting traffic rate.
Randomizer 325 regularly produces random number x (0＜x＜1) in the predetermined moment.
As will explaining after a while; Random number/table of random numbers comparing unit 326 is according to randomizer 325 random number x that is produced and the RAbit that regularly receives from the base station; Consult the traffic rate that is stored in the traffic rate variation test chart memory cell 331 and change test chart, then comparative result is informed that traffic rate is provided with unit 324.
The traffic rate that 331 storages of traffic rate variation test chart memory cell receive from the wireless base station changes all or part of of test chart 150.
Pairing communication rank is used in 322 storages of communication rank memory cell.
Figure 10 is a width of cloth flow chart, shows the operational detail of wireless base station 100.
When beginning communicated with wireless communication terminal 300, wireless base station 100 received the required pairing communication rank of traffic rate of the current application of carrying out, and then, the rank of should communicating by letter is stored in the communication rank memory cell 132.
Wireless base station 100 judges whether to receive the RouteUpdate message that comprises base station 200, promptly indicates the pilot signal strength of wireless base station 200 to be equal to or to have surpassed the RouteUpdate message (step 802) of predetermined threshold value.If receive RouteUpdate message (" being " in the step 802), wireless base station 100 just judges whether wireless base station 200 only supports rev.0 (step 803).
If 100 judgement wireless base stations 200, wireless base station are not the base stations (" denying " in the step 803) of only supporting rev.0, conventional handoff procedure is just carried out in wireless base station 100.
If rev.0 (" being " in the step 803) is supported in 200 of 100 judgement wireless base stations, wireless base station, wireless base station 100 just judges whether the pilot signal strength of wireless base station 200 has been equal to or has surpassed predetermined threshold value γ (step 804).
If wireless base station 100 receives RouteUpdate message (" being " in the step 804), the communication rank that wireless base station 100 just will be stored in the communication rank memory cell 132 is informed base station 200 (805).In addition, wireless base station 100 sends a ConnectionClose message (step 806) to wireless communication terminal 300, and stops the communication with wireless communication terminal 300.
Figure 11 is a width of cloth flow chart, shows the operational detail of wireless base station 200.
When the communication rank (step 901) by wireless base station 100 application notice, that in the process with wireless communication terminal communication, carry out is received in wireless base station 200; Just consult traffic rate and change test chart memory cell 133, and extract corresponding to other value of communication stage according to the communication rank of being apprised of.In addition; Wireless base station 200 produces a traffic rate according to the value that extracts and changes test chart 150 ' (with reference to figure 9); Then, when wireless communication terminal 300 is carried out switching, traffic rate is changed test chart 150 ' and be sent to wireless communication terminal 300 (step 902).
Be the notice of " 1 " if wireless base station 200 is received such as the communication rank, wireless base station 200 just changes in the test chart 150 corresponding to the threshold value of rank " 1 " by extraction traffic rate shown in Figure 9, changes test chart 150 ' to form traffic rate.
After this, wireless base station 200 changes the reverse link communication of test chart 150 ' control with wireless communication terminal 300 according to traffic rate.
Figure 12 is a width of cloth flow chart, shows the operational detail of wireless communication terminal 300.
In case in the scope of the sub-district of supporting rev.A, started application (step 701), the communication rank that wireless communication terminal 300 just will be used is informed wireless base station 100 (step 702).
In case judge to switch is 100 to switch to base station 200 (step 703) from the base station, and wireless communication terminal 300 just at first judges whether base station 200 is rev.0 version (steps 704).If wireless terminal 300 judgement base stations 200 are rev.0 version (" being " in the step 704); Wireless communication terminal 300 just when setting up session from the wireless base station 200 received communication rate variation test charts, 150 ' (step 705), and change test chart 150 ' control reverse link communication speed (step 150 ') according to the traffic rate that receives.
" second embodiment "
Figure 13 is a width of cloth block diagram, has used the functional configuration according to the wireless communication terminal of second embodiment of the invention.
Wireless communication terminal 1100 is terminal equipments of supporting 1xEV-DO rev.A.The wireless base station is the wireless base station of supporting 1xEV-DO.
Wireless communication terminal 1100 is configured to comprise: communications applications performance element 1011 is used for carrying out such as application such as IP phones; Data receiver 1012 is used for from radio base station receiving data and data transmission unit 1013, is used for sending data from wireless communication terminal 1100 to wireless base station 1200.In addition, wireless communication terminal 1100 has been equipped: communication rank identifying unit 1141, randomizer 1142, RAbit extraction unit 1143 and traffic rate are provided with unit 1144.
1200 wireless signals (RF signal) that receive carry out demodulation from the wireless base station for 1012 pairs of data receivers, then to deciphering through the demodulated received data, and data are offered communications applications performance element 1011.
RAbit extraction unit 1143 extracts the RAbit that is regularly sent and received for data receiver 1012 subsequently by wireless base station 1200 from data receiver 1012, then the RAbit that extracts is offered traffic rate unit 1144 is set.
Communication rank identifying unit 1141 is confirmed 1011 required traffic rates of the application that will carry out of communications applications performance element, according to the traffic rate of determining the communication rank is set then, and the rank of then will communicating by letter informs that traffic rate is provided with unit 1144.
Randomizer 1142 regularly produces random number x (0＜x＜1) in the predetermined moment, then the random number that generates is offered traffic rate unit 1144 is set.
Traffic rate is provided with unit 1144 and comprises that one will change test chart 1150 in the traffic rate of explaining after a while; The random number x that traffic rate is provided with communication rank that the RAbit that informs according to RAbit extraction unit 1143 unit 1144, communication rank identifying unit 1141 inform and randomizer to be provided is provided with the transmission rate higher limit of transmission data, then the traffic rate higher limit of setting is informed data transmission unit 1013.
The higher limit that data transmission unit 1013 is informed according to traffic rate unit 1144 is encoded to the data that receive from communications applications performance element 1011, then data is modulated, and data are exported as the RF signal.
Figure 14 is that the traffic rate that is contained in wireless communication terminal 1100 is provided with the traffic rate variation test chart 1150 in the unit 1144.
Traffic rate changes test chart 1150 and is with the difference that conventional rate changes test chart: the former provides a plurality of the communicate by letter ranks relevant with each higher limit of each reverse link communication speed, has also supplied the threshold value of an above-mentioned probability inspection indescribably for each communication stage.
It should be noted that other value of each communication stage is provided with according to communication rank identifying unit 1141 determined traffic rates.In the present embodiment, for each higher limit of each traffic rate, be provided with from 1 to 4 four kind of communication class value under the state.Yet, the communication stage method for distinguishing is set is not limited thereto.For each higher limit of each traffic rate, can under three kinds of states, be provided with should value.In addition, can also different state (for example, for 9.6kbps is provided with four kinds of ranks, for 19.2kbps is provided with three kinds of ranks or the like) be set for each higher limit.Naturally, the value of threshold value α is not limited to value used in the present embodiment.
In addition, in the present embodiment, earlier in communication rank identifying unit 1141, the communication rank is set, and then it is offered traffic rate unit 1144 is set.Communication rank identifying unit 1141 can inform that traffic rate is provided with unit 1144 with using required traffic rate, and traffic rate is provided with unit 1144 can be provided with the communication rank according to this notice.
Change test chart 1150 according to traffic rate; If judge that when RAbit=0 (if promptly might improve traffic rate) the communication rank of using is " 1 "; So for example because the pairing threshold value α of communication rank " 1 " under the 9.6kbps speed is " 255/255 "; Thereby α >=x (0＜x＜1) is always very (probability 100%), therefore always the upper limit of traffic rate brought up to other 19.2kbps of next stage.Equally, because the threshold value under 19.2kbps and the 38.4kbps speed is " 255/255 ", therefore,, then always higher limit is brought up to next rank if the communication rank is " 1 ".
Particularly, change test chart 1150 according to traffic rate, defined the communication rank and it is set to the application of " 1 " for one, the higher limit of traffic rate is bound to after having carried out three inspections, bring up to 76.8kbps.
In addition; If RAbit=1 (had better not improve traffic rate); And the communication rank of using is " 1 "; So because the pairing threshold value α of communication rank " 1 " always " 0/255 " under the 76.8kbps speed, thereby α >=x (0＜x＜1) is always false (probability 0%), therefore can traffic rate be maintained 76.8kbps.
Figure 15 is a width of cloth flow chart, shows the traffic rate setting up procedure of carrying out according to the wireless communication terminal 1100 of present embodiment.
Application in the wireless application performance element 1011 is in case start, and wireless communication terminal 1100 is at first judged and oneself is in 1xEV-DO rev.0 (to call rev.0 in the following text) environment or is in 1xEV-DO rev.A (to call rev.A in the following text) environment (step 1001).If wireless communication terminal 1100 judges that wireless communication terminal 1100 is in rev.A environment (" denying " in the step 1100); Wireless communication terminal 1100 just begins to communicate (because this process and the present invention are irrelevant, thereby it not being described) after having experienced predetermined process.
On the other hand, if wireless communication terminal 1100 judges that wireless communication terminal 1100 is in rev.0 environment (" being " in the step 1001), wireless communication terminal 1100 just begins to communicate (step 1002) with minimum traffic rate (9.6kbps).In addition, wireless communication terminal 1100 (communication rank identifying unit 1141) is confirmed to use required reverse link communication speed, an appropriate communication rank is set then, and the rank of should communicating by letter informs that traffic rate is provided with unit 1144 (step 1003).In case receive the RAbit from the wireless base station, wireless communication terminal 1100 just judges whether the RAbit that receives is " 0 " (step 1004).
If wireless communication terminal 1100 judges that the RAbit that receives is " 0 " (" being ") in the step 1004, wireless communication terminal 1100 just improves a rank with the higher limit of current traffic rate.Wireless communication terminal 1100, more particularly, randomizer 1142 produces random number x (0＜x＜1), and it is offered traffic rate unit 1144 (step 1005) is set.Traffic rate is provided with unit 1144 will compare (step 1006) with random number x corresponding to current traffic rate higher limit (being 9.6kbps when just beginning to communicate by letter) and other threshold value of the communication stage α that is informed corresponding to communication rank identifying unit 1141.
Judge random number x less than threshold value α (" being " in the step 1006) if traffic rate is provided with unit 1144, traffic rate is provided with unit 1144 and just the higher limit of current traffic rate is improved a rank (step 1007).On the other hand, judge that random numbers are equal to or greater than threshold value α (" denying " in the step 1006) if traffic rate is provided with unit 1144, traffic rate is provided with unit 1144 with regard to the higher limit that makes current traffic rate remain unchanged (step 1008).
In addition, if wireless communication terminal 1100 judges that RAbit is " 1 " (" denying " in the step 1004), wireless communication terminal 1100 just reduces a rank with current traffic rate.Wireless communication terminal 1100, more particularly, randomizer 1142 produces random number x (0＜x＜1), and it is offered traffic rate unit 1144 (step 1009) is set.Traffic rate be provided with unit 1144 will corresponding to current traffic rate higher limit (being 9.6kbps when just beginning to communicate by letter) and other threshold value of communication stage of being informed corresponding to communication rank identifying unit 1141 (use α ' expression in the accompanying drawings, so as with this threshold value α with RAbit during for " 0 " threshold value α distinguish) compare (step 1010) with random number x.
Judge random number x less than threshold value α ' (" being " in the step 1010) if traffic rate is provided with unit 1144, traffic rate is provided with unit 1144 and just the higher limit of current traffic rate is improved a rank (step 1011).Judge that random number x are equal to or greater than threshold value α ' (" denying " in the step 1010) if traffic rate is provided with unit 1144, traffic rate is provided with unit 1144 with regard to the higher limit that makes current traffic rate remain unchanged (step 1011).
It should be noted that wireless communication terminal 1100 can be with informing wireless communication terminal 1100 by the communication rank of radio communication rank identifying unit 1141 settings.Thereby make wireless base station 1200 can learn the state of each wireless communication terminal, utilize business control information or similar information then.
Figure 16 is a width of cloth block diagram, shows according to the wireless terminal of the present invention's one modified example and the functional configuration of wireless base station.
Wireless communication terminal 1300 is terminal equipments of supporting rev.A.Wireless base station 1400 is wireless base stations of supporting rev.0.
Wireless communication terminal 1300 is configured to comprise: communications applications performance element 1011 is used for carrying out such as application such as IP phones; Data receiver 1012 is used for the 1400 reception data from the wireless base station; And data transmission unit 1013, be used for sending data to wireless base station 1400 from wireless communication terminal 1300.In addition, wireless communication terminal 1300 has been equipped: communication rank identifying unit 1141, randomizer 1142, RAbit extraction unit 1143, traffic rate are provided with unit 1311 and communications setting converting unit 1312.
In addition, wireless base station 1400 is configured to comprise: data receiver 1041, be used for receiving data from wireless communication terminal or similar devices, and data transmission unit 1042, be used for sending data to wireless communication terminal or similar devices.Wireless communication terminal 1400 also comprises RAbit generator 1431 and communications setting unit 1432.
In wireless communication terminal 1300,1012 pairs of wireless signals that receive from the wireless base station of data receiver (RF signal) carry out demodulation, then to deciphering through the demodulated received data, and data are offered communications applications performance element 1011.
Wireless communication terminal 1300 is once energising, communications setting unit 1311 just in self and wireless base station 1400 communicate setting.
Here, communications setting unit 1311 is respectively the above-mentioned rank of communicating by letter 1400 of self and wireless base stations and disposes a plurality of communications settings.
Particularly; Shown in figure 17, for instance, communications setting unit 1311 changes the threshold value α that extracts the test chart 1150 corresponding to rank " 1 " of communicating by letter in each state from communication data; Form communications setting (1) then, as communications setting corresponding to communication rank " 1 ".Equally; The 1311 configuration communication settings (2) of communications setting unit are as the communications setting corresponding to communication rank " 2 ", communications setting (3); As communications setting corresponding to communication rank " 3 "; Or the like, and be provided with in self and 1400 configurations in wireless base station repeatedly, till the communications setting number equals to communicate by letter number of levels.Carrying out the resulting a plurality of communications settings of this process is kept in the communications setting converting unit 1312.
1312 storages of communications setting converting unit and other communications setting of each communication stage that keeps being arranged at communications setting unit 1311; Then; The communication rank of being informed according to communication rank identifying unit 1141 converts the communications setting of 1400 of self and wireless base stations to the appropriate communication setting.
On the other hand, in wireless base station 1400, data receiver 1041 receives data from wireless communication terminal 1300 or similar devices, and data transmission unit 1042 sends data to wireless communication terminal 1300 or similar devices.
RAbit generator 1431 produces RAbit, and the latter representes increase of making according to traffic congestion or analogue or the instruction that reduces the traffic rate higher limit.
Wireless communication terminal 1300 is once energising, and a plurality of communications settings of 1300 of self and wireless communication terminals are just set up and stored in communications setting unit 1432.
Particularly; In the present embodiment; Wireless communication terminal 1300 energising in a single day, wireless communication terminal 1300 are just carried out the general communication setting in self and 1400 of wireless base stations, in this process; The a plurality of communications settings of wireless communication terminal 1300 configurations, the latter is included as the optimum gate limit value α of other each traffic rate definition of each communication stage.In addition, wireless communication terminal 1300 according to use these communications settings during the communication rank switch communication settings of the communications applications that will start.
Figure 18 is a width of cloth flow chart, shows the workflow according to the wireless communication terminal 1300 of this modified example.
In case power-on, wireless communication terminal 1300 at first (in communications setting unit 1311) in self and base station 1400 be each above-mentioned a plurality of communications setting (step 3002) of rank configuration of communicating by letter.
Application in the wireless application performance element 1011 is in case start (step 3003); Wireless communication terminal 1300; More particularly, communication rank identifying unit 1141 is just confirmed the communication rank (step 3004) of application, then the communication stage of determining is supplied with communications setting converting unit 1312 indescribably.
The communication rank that communications setting converting unit 1312 is informed according to communication rank identifying unit 1141 is selected a kind of appropriate communication setting (step 3005) from a plurality of communications settings.Wireless communication terminal 1300 uses the communications setting of choosing to begin to communicate (step 3006).
In case receive the RAbit from wireless base station 1400, wireless communication terminal 1300 just judges whether the RAbit that receives is " 0 " (step 3007).If wireless communication terminal 1300 judges that the RAbit that receives is " 0 " (" being ") in the step 3007, wireless communication terminal 1300 just improves a rank with the higher limit of current traffic rate.Wireless communication terminal 1300, more particularly, randomizer 1142 produces a random number x (0＜x＜1), and it is offered communications setting converting unit 1312 (step 3008).
In addition, communications setting converting unit 1312 will compare (step 3009) with random number x corresponding to the threshold value α of current traffic rate higher limit (being 9.6kbps when just beginning to communicate by letter).If communications setting converting unit 1312 is judged random number x less than threshold value α (" being " in the step 3009), communications setting converting unit 1312 just improves a rank (step 3010) with the higher limit of current traffic rate.On the other hand, if communications setting converting unit 1312 judges that random numbers are equal to or greater than threshold value α, communications setting converting unit 1312 is with regard to the higher limit that makes current traffic rate remain unchanged (step 3011).
In addition, if wireless communication terminal 1300 judges that RAbit is " 1 " (" denying " in the step 3007), wireless communication terminal 1300 just reduces a rank with current traffic rate.Wireless communication terminal 1300, more particularly, randomizer 1142 produces a random number x (0＜x＜1), and it is offered communications setting converting unit 1312 (step 3012).Communications setting converting unit 1312 will corresponding to current traffic rate higher limit and other threshold value of communication stage of being informed corresponding to communication rank identifying unit 1141 (use α ' expression in the accompanying drawings, so as with this threshold value α with RAbit during for " 0 " threshold value α distinguish) compare (step 3013) with random number x.If communications setting converting unit 1312 is judged random number x less than threshold value α ' (" being " in the step 3013), communications setting converting unit 1312 just improves a rank (step 3014) with the higher limit of current traffic rate.On the other hand, be equal to or greater than threshold value α ' if communications setting converting unit 1312 is judged random number x, communications setting converting unit 1312 is with regard to the higher limit that makes current traffic rate remain unchanged (step 3011).
According to the foregoing description, in the communications setting process when power-on, dispose a plurality of communications settings, the latter is included as the optimum gate limit value α of other each traffic rate definition of each communication stage.Through being the setting of application choice optimal communication simply starting when using, just can not increase under the situation of handling burden, the optimal communication environment, is provided when using in startup.
" the 3rd embodiment "
Figure 19 is according to the wireless communication terminal of third embodiment of the invention and the signal frame assumption diagram of wireless base station.
In Figure 19, wireless communication terminal 2100 is terminal equipments of supporting rev.A and rev.0, and has equipped: RF unit 2110, system controller 2120, system storage 2130, manifest unit 2140 and keyboard input unit 2150.
RF unit 2110 sends and the 2200 reception cdma wireless signals from the wireless base station to wireless base station 2200.In addition; The 2110 pairs of wireless signals in RF unit carry out demodulation, and will be sent to system controller 2120 through the demodulated received data, simultaneously; Also the data that receive from system controller 2120 are modulated, then data are sent to wireless base station 2200 as wireless signal.
The types of functionality that system controller 2120 control wireless communication terminal 2100 is contained.After a while will be in further detail the function square frame configuration according to the system controller 2120 of present embodiment be explained.
Control in the system storage 2130 storage base stations 100 or similar functions the various information that will use.After a while will be in further detail the function square frame configuration according to the system storage 2130 of present embodiment be explained.
Display unit 2140 shows picture material or the similar content of utilizing RF unit 2110 and system controller 2120 to receive, perhaps display operation content (telephone number of input, address or similar content).
Keyboard input unit 2150 is configured to comprise: ten buttons, function key or similar buttons, it be user's input operation content the interface that will use.
In addition, wireless base station 2200 is base stations of only supporting rev.0, has equipped: RF unit 2210, system controller 2220 and system storage 2230.
RF unit 2210 receives the cdma wireless signals to wireless communication terminal 2100 transmissions and from wireless communication terminal 2100.In addition, the conversion of wireless signal to baseband signal also carried out in RF unit 2210, and to system controller 2220 transmissions or from system controller 2220 receiving baseband signals.
The types of functionality that system controller 2220 control wireless base stations 2200 are contained.After a while will be in further detail the function square frame configuration according to the system controller 2220 of present embodiment be explained.
Control in the system storage 2230 storage wireless base stations 2200 or similar functions the various information that will use.After a while will be in further detail the function square frame configuration according to the system storage 2230 of present embodiment be explained.
Figure 20 is the detailed functions frame assumption diagram of system controller 2120 and system storage 2130.
Shown in figure 20, system controller 2120 has been equipped: data communication units 2121, traffic rate are provided with unit 2122 and randomizer 2123.
In addition, system storage 2130 has been equipped: traffic rate changes test chart memory cell 2131 and communication rank memory cell 2132.
The RAbit that data communication units 2121 reception wireless base stations 2200 regularly send.
Traffic rate be provided with unit 2122 according to will explain after a while the application setting traffic rate that will carry out.
Randomizer 2123 regularly produces random number x (0＜x＜1) in the predetermined moment.
Traffic rate changes the traffic rate variation test chart 2350 that 2131 storages of test chart memory cell will be explained after a while.
The corresponding communication rank is respectively used in 2132 storages of communication rank memory cell.
The traffic rate that is stored in the traffic rate variation test chart memory cell 2131 has been shown here, and has changed test chart 2350 in Figure 22.
In Figure 22 (a); Traffic rate changes test chart 2350 and is with the difference that conventional rate changes test chart: the former provides a plurality of the communicate by letter ranks relevant with each higher limit of each reverse link communication speed, has also supplied the threshold value of an above-mentioned probability inspection indescribably for each communication stage.
It should be noted that the communication rank is the numerical value according to the application memory in the communication rank memory cell 2132, promptly according to the numerical value (with reference to Figure 22 (b)) of using required reverse link communication speed storage.
Change test chart 2350 according to traffic rate; If the communication rank of when RAbit=0 (if promptly might improve traffic rate), judge using be " 1 " (such as; VoIP or similar application); So for example because the pairing threshold value α of communication rank " 1 " under the 9.6kbps speed is " 255/255 ", thereby α >=x (0＜x＜1) is always very (probability 100%).Therefore, the upper limit of traffic rate always is increased to other 19.2kbps of next stage.Equally, owing to be " 255/255 " in the communication rank for the threshold value α under 19.2kbps under the situation of " 1 " and the 38.4kbps speed, thereby always higher limit is brought up to next rank.
Particularly, change test chart 2350 according to traffic rate, be set to the application of " 1 " for the communication rank, the higher limit of traffic rate is bound to after having carried out three inspections, bring up to 76.8kbps.
In addition; If RAbit=1 (had better not improve traffic rate); And the communication rank of using is " 1 "; So for example because the pairing threshold value α of communication rank " 1 " always " 0/255 " under the 76.8kbps speed, thereby α >=x (0＜x＜1) is always false (probability 0%), thereby can traffic rate be maintained 76.8kbps.
It should be noted that in the present embodiment, be provided with the numerical value under from 1 to 4 four kind of state of each higher limit of each traffic rate in the wireless rate variation test chart 2350.Yet, the communication stage method for distinguishing is set is not limited thereto.For each higher limit of each traffic rate, can under three kinds of states, be provided with should value.In addition, can also different state (for example, for 9.6kbps is provided with four kinds of ranks, for 19.2kbps is provided with three kinds of ranks or the like) be set for each higher limit.Naturally, the value of threshold value α is not limited to value used in the present embodiment.
Figure 21 is the system controller 2220 of wireless base station 2200 and the function frame assumption diagram of system storage 2230.
Shown in figure 21, system controller 2220 has been equipped: data communication units 2221 and RAbit generator 2222.
In addition, system storage 2230 has been equipped traffic rate variation test chart memory cell 2231.
The processing that data communication units 2221 execution are relevant with the communication of image, music or similar content, or send and receive all kinds of control informations.
RAbit generator 2222 produces RAbit, and the latter gets any value in " 0 " and " 1 " according to the network congestion of wireless base station 2200 and adjacent base station.
Traffic rate changes test chart memory cell 2231 storage traditional communication rate variation test charts (with reference to figure 1).
Particularly; In the present embodiment, the traffic rate preserved of wireless communication terminal 2100 changes traffic rate that test chart preserved with wireless base station 2200 and changes quantity and the numerical value that difference between test chart is the threshold value that each higher limit into each reverse link communication speed is provided with.
Figure 23 is a width of cloth flow chart, shows in detail the workflow of wireless communication terminal 2100.
Wireless communication terminal 2100 checks that when setting up session with wireless base station 2200 which will use open traffic rate changes test chart.Particularly; If wireless communication terminal 2100 receives the instruction (step 1501) that the traffic rate that uses wireless base station 2200 to be preserved changes the threshold value the test chart (with reference to figure 1) from wireless base station 2200, wireless communication terminal 2100 just sends the signal (step 1502) that instruction is accepted in an expression to wireless base station 2200.
Yet in fact, wireless communication terminal 2100 can utilize the traffic rate that is kept at himself to change traffic rate in the test chart memory cell 2132 to change test chart 2350 (threshold value) and control.
After this, wireless communication terminal 2100 at first begins to communicate (step 1503) with minimum traffic rate (9.6kbps).
Wireless communication terminal 2100, more particularly, traffic rate be provided with unit 2122 according to communication rank memory cell 2132 confirm to be suitable for the communication rank (step 1504) of the application that will carry out.
Subsequently, in case receive the RAbit from wireless base station 2200, traffic rate is provided with unit 2122 and just judges whether the RAbit that receives is " 0 " (step 1505).
Judge that the RAbit that receives is " 0 " (" being ") in the step 1505 if traffic rate is provided with unit 2122, traffic rate is provided with unit 2122 just to be changed traffic rate in the test chart memory cell 2131 and changes test chart 2350 higher limit of current reverse link communication speed is improved a rank according to being stored in traffic rate.
Then, wireless communication terminal 2100, more particularly, randomizer 2123 produces random number x (0＜x＜1), and it is offered traffic rate unit 2122 (step 1506) is set.Traffic rate is provided with unit 2122 and changes test chart 2350 extractions corresponding to current reverse link communication rate-limit value (being 9.6kbps when just beginning to communicate by letter) and corresponding to other threshold value of the communication stage of step 1504, determining α from traffic rate; Then, the threshold value α that obtains is compared (step 1507) with random number x.
If being provided with unit 2122, traffic rate judges that random number x is less than threshold value α (" being " in the step 1507); Traffic rate is provided with unit 2122 and just notifies wireless base station 2200 " x＜α " (step 1508), and the higher limit with current reverse link communication speed improves a rank (step 1509) then.
On the other hand; If being provided with unit 2122, traffic rate judges that random number x is equal to or greater than threshold value α (" denying " in the step 1507); Traffic rate is provided with unit 2122 and just notifies wireless base station 2200 " x >=α " (step 1510), and makes the higher limit of current reverse link communication speed remain unchanged (step 1511).
In addition; Judge that RAbit is " 1 " (" denying " in the step 1505) if traffic rate is provided with unit 2122, traffic rate is provided with unit 2122 and just changes test chart 2350 rank of higher limit reduction with current reverse link communication speed according to the traffic rate that is stored in the traffic rate variation test chart memory cell 2131.
Particularly, randomizer 2123 produces random number x (0＜x＜1), and it is offered traffic rate unit 2122 (step 1512) is set.Traffic rate is provided with unit 2122 and changes test chart 2350 extractions corresponding to current reverse link communication rate-limit value and corresponding to other threshold value of the communication stage of step 1504, determining α from traffic rate; Then; With the threshold value α that obtains (use α ' expression in the accompanying drawings, so as with this threshold value with RAbit during for " 0 " threshold value distinguish) compare (step 1513) with random number x.
If being provided with unit 2122, traffic rate judges that random number x is less than threshold value α (" being " in the step 1513); Traffic rate is provided with unit 2122 and just notifies wireless base station 2200 " x＜α " (step 1514), and the higher limit of current reverse link communication speed is reduced a rank (step 1515).
On the other hand; If being provided with unit 2122, traffic rate judges that random number x is equal to or greater than threshold value α (" denying " in the step 1513); Traffic rate is provided with unit 2122 and just notifies wireless base station 2200 " x >=α " (step 1516), and makes the higher limit of current reverse link communication speed remain unchanged (step 1511).
It should be noted that in step 1508,1510,1514 and 1516 wireless communication terminal 2100 is not that " x " and " α " value is separately informed wireless base station 2200, just both magnitude relationship are informed wireless base station 2200 on the contrary.Particularly, wireless communication terminal 2100 is with the value an of expression " x " and " α " magnitude relationship, like " x/ α " (removing the value that α obtains with x) or " x-α " (subtracting the value that α obtains with x).
In case receive the value of expression " x " and " α " magnitude relationship from wireless communication terminal 2100, wireless base station 2200 just changes the higher limit of reverse link rate according to the value that receives.
Particularly, for instance, if RAbit is " 0 ", wireless base station 2200 just improves a rank with the higher limit of current reverse link communication speed.Then; When expression " x " that wireless communication terminal 2100 is informed and the value of " α " magnitude relationship are received in wireless base station 2200; During like the value of " x/ α ", wireless base station 2200 (is x＜α) under the genuine situation higher limit of reverse link communication speed being improved a rank in " 1＞(x/ α) " just.In addition, in this case, if " 1≤(x/ α) " (is that x>=α) for true, wireless base station 2200 remains unchanged with regard to the higher limit that makes current reverse link communication speed.
In addition, if RAbit is " 1 ", wireless base station 2200 just reduces a rank with the higher limit of current reverse link communication speed.Then; When expression " x " that wireless communication terminal 2100 is informed and the value of " α " magnitude relationship are received in wireless base station 2200; During like the value of " x/ α ", wireless base station 2200 (is x＜α) under the genuine situation higher limit of reverse link communication speed being reduced a rank in " 1＞(x/ α) " just.In addition, in this case, if " 1≤(x/ α) " (is that x>=α) for true, wireless base station 2200 remains unchanged with regard to the higher limit that makes current reverse link communication speed.
It should be noted that in the above-described embodiments, adopted wireless communication terminal 2100 to inform the configuration of random number x and threshold value α magnitude relationship to wireless base station 2000.Yet, can also adopt the configuration that instruction directly is provided for wireless base station 2000, instruction can be with the higher limit raising of reverse link communication speed or reduce a rank or make the higher limit of reverse link communication speed remain unchanged.In this case, wireless base station 2000 is according to the higher limit that changes reverse link communication speed from the instruction of wireless communication terminal 2100.
According to the foregoing description, can use wireless communication terminal 2100 to control the higher limit of the suitable reverse link communication speed of using, do not control and do not change the wireless base station 2200 performed reverse link communications of supporting rev.0.
It should be noted that in the lump as a reference at this with the full content of japanese patent application No. 2005-342176 (being filed on November 28th, 2005), japanese patent application No. 2005-42180 (being filed on November 28th, 2005) and japanese patent application No. 2005-366233 (being filed on December 20th, 2005).
Industrial applicibility
As up to the present illustrated; Owing to can shorten the duration of communication disruption in the handoff procedure; Therefore; Have in existence under the situation of mixing apparatus of the different communication capacities relevant with data communication, particularly favourable when radio communication (like mobile communication) according to communication means of the present invention, portable terminal and base station applies.

Claims (11)

1. wireless communication terminal comprises:
Memory cell, configuration is used to store a plurality of threshold values that are used to change the traffic rate higher limit, wherein sets each traffic rate higher limit step by step; And
Controller, configuration be used for according to the application that will carry out, from memory cell, select the reverse link communication speed corresponding threshold value required, and control the reverse link communication speed of said application according to the threshold value of choosing with said application.
2. wireless communication terminal comprises:
The unit is set, and configuration is used for setting a plurality of communications settings to the wireless base station, and said communications setting is defined as the threshold value that is used to change the traffic rate higher limit with the optimal value of each application, wherein sets each traffic rate higher limit step by step; And
Controller, configuration be used to utilize based on the communications setting of the application that will start, control to the reverse link communication speed of wireless base station.
3. wireless communication terminal according to claim 1, its middle controller will be informed the wireless base station according to the threshold value that the required reverse link communication speed of application is chosen when carrying out application.
4. wireless communications method comprises:
Be provided for changing a plurality of threshold values of traffic rate higher limit, wherein set each traffic rate higher limit step by step;
According to wireless communication terminal the application that will carry out, select and the required corresponding threshold value of reverse link communication speed of said application; And
According to the threshold value of choosing, control the reverse link communication speed of said application.
5. wireless communications method comprises:
Set a plurality of communications settings to the wireless base station, said communications setting is defined as the threshold value that is used to change the traffic rate higher limit with the optimal value of each application, wherein sets each traffic rate higher limit step by step; And
Utilization based on the communications setting of the application that will start, control to the reverse link communication speed of wireless base station.
6. wireless communication terminal comprises:
Memory cell, configuration is used to store the threshold value that is used to change the traffic rate higher limit, simultaneously said threshold value is associated with application, wherein sets each traffic rate higher limit step by step; And
Controller, configuration be used for according to carry out should be used for selecting the threshold value that is associated with said application, and control the reverse link communication speed of said application according to the threshold value of choosing.
7. wireless communication terminal according to claim 6 also comprises:
Receiver, configuration is used for being received in that the wireless base station is provided with, as to be used to change traffic rate higher limit threshold value from the wireless base station, wherein sets each traffic rate higher limit step by step; And
Notification unit, configuration is used to notify the wireless base station, and the threshold value that receiver receives will be used to control reverse link communication speed by controller.
8. wireless communications method comprises:
Storage be used to change the traffic rate higher limit threshold value, simultaneously said threshold value is associated with application, wherein set each traffic rate higher limit step by step;
Be received in the threshold value that is provided with the wireless base station, be used to change the traffic rate higher limit from the wireless base station, wherein set each traffic rate higher limit step by step;
The notice wireless base station, the threshold value that receives will be used to control reverse link communication speed, simultaneously select the threshold value of storing with said association according to should being used for of will carrying out of institute; And
Control the reverse link communication speed of said application according to the threshold value of choosing.
9. wireless base station, configuration is used for carrying out radio communication with wireless communication terminal, and said wireless base station comprises:
Memory cell, configuration is used to store a plurality of threshold values that are used to change the traffic rate higher limit, wherein sets each traffic rate higher limit step by step;
Receiver, configuration are used for from the information of the required reverse link communication speed of the performed application of another wireless communication terminal that wireless base station reception is represented and said another wireless base station carries out radio communication; And
Notification unit; Configuration is used for obtaining from memory cell the corresponding threshold value of information of the reverse link communication speed that receives with receiver, the said application of expression is required; And when wireless communication terminal is carried out the switching from said another wireless base station to said wireless base station, the threshold value of choosing is informed wireless communication terminal.
10. wireless communication terminal comprises:
Transmitter, configuration be used for to the wireless base station send expression the information of the required reverse link communication speed of the application that will carry out;
Receiver; Configuration is used for when carrying out from the wireless base station of communication with it the switching of another wireless base station; From the wireless base station receive threshold of communication with it, said threshold value is to each higher limit of traffic rate and definite, and is used to change the higher limit of setting step by step; And
Controller, configuration is used for controlling according to the threshold value that receiver receives the reverse link communication speed of said application.
11. a wireless communication system comprises:
First wireless base station can be according to being used for the reverse link communication speed that allotment period hopes;
Second wireless base station, configuration is used for controlling the reverse link communication speed of said application through changing the higher limit of reverse link communication speed step by step; And
Wireless communication terminal can communicate with first wireless base station and second wireless base station, wherein
First wireless base station comprises:
Receiver, configuration are used for when wireless terminal is carried out said application, receiving the information of the required reverse link communication speed of the said application of expression; And
Notification unit, configuration are used for when wireless communication terminal is carried out the switching from first wireless base station to second wireless base station, information notification second wireless base station of the reverse link communication speed that receiver is received, the said application of expression is required,
Second wireless base station comprises:
Memory cell, configuration is used to store a plurality of threshold values that are used to change the traffic rate higher limit, wherein sets each traffic rate higher limit step by step;
Receiver, configuration are used for receiving from first wireless base station information of the required reverse link communication speed of the performed application of expression wireless communication terminal; And
Notification unit; Configuration is used for obtaining from memory cell the corresponding threshold value of information of the reverse link communication speed that receives with receiver, the said application of expression is required; And when wireless communication terminal is carried out the switching from first wireless base station to second wireless base station; The threshold value of choosing is informed wireless communication terminal
Wireless communication terminal comprises:
Transmitter, configuration be used for to first wireless base station send expression the information of the required reverse link communication speed of the application that will carry out;
Receiver, configuration are used for when the switching of carrying out from first wireless base station to second wireless base station, receiving the threshold value of determining according to the information of the expression reverse link communication speed of knowing from second wireless base station; And
Controller, configuration is used for after the switching that executes from first wireless base station to second wireless base station, and the threshold value that receives according to receiver is controlled the reverse link communication speed of said application.
CN200680044545.6A 2005-11-28 2006-11-22 Radio base station, radio communication terminal, radio communication system, and radio communication method Expired - Fee Related CN101331784B (en)

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JP2005342180A JP4721883B2 (en) 2005-11-28 2005-11-28 Wireless communication terminal and wireless communication method
JP2005342176A JP4936711B2 (en) 2005-11-28 2005-11-28 Radio base station, radio communication terminal, and radio communication system
JP342176/2005 2005-11-28
JP366233/2005 2005-12-20
JP2005366233A JP4711821B2 (en) 2005-12-20 2005-12-20 Wireless communication terminal and wireless communication method
PCT/JP2006/323333 WO2007060996A1 (en) 2005-11-28 2006-11-22 Radio base station, radio communication terminal, radio communication system, and radio communication method

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Citations (1)

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JP2001268617A (en) * 2000-03-21 2001-09-28 Mitsubishi Electric Corp Radio communication method
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JP4054253B2 (en) * 2002-12-10 2008-02-27 京セラ株式会社 Communication system, radio communication terminal and radio base station

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