CN101626603A - Method and system for distributing resources based on terminal radio frequency characteristic parameter - Google Patents
Method and system for distributing resources based on terminal radio frequency characteristic parameter Download PDFInfo
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- CN101626603A CN101626603A CN200810116582A CN200810116582A CN101626603A CN 101626603 A CN101626603 A CN 101626603A CN 200810116582 A CN200810116582 A CN 200810116582A CN 200810116582 A CN200810116582 A CN 200810116582A CN 101626603 A CN101626603 A CN 101626603A
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Abstract
The invention provides a method for distributing resources based on a terminal radio frequency characteristic parameter. The method comprises the following steps: firstly, measuring the radio frequency characteristic parameter of a terminal, and storing the radio frequency characteristic parameter in the terminal; then, reporting the radio frequency characteristic parameter to a base station by the terminal; and finally, distributing link resources for the terminal by the base station based on the radio frequency characteristic parameter reported by the terminal. The invention also provides a system adopting the method, which comprises one or more measuring units, one or more terminals and one base station, wherein the measuring unit is used for measuring the radio frequency characteristic parameter of the terminal, and transferring a measuring result to the terminal. The method and the system use the radio frequency characteristic parameter of the terminal to restrict uplink/downlink resource distribution of a wireless communication network, concern the circuit characteristic of each wireless terminal, and correct inconsistency of the radio frequency circuit characteristic of the wireless terminal caused by difference of circuit manufacture processes.
Description
Technical field
The present invention relates to wireless communication system, relate in particular to the method for the item constraint condition that a kind of radio frequency characteristic parameter with terminal distributes as air-link resources.
Background technology
In wireless communication system, be wireless terminal Resources allocation in the network by the central resource allocation module.Air-link resources is made up of subchannel and transmitting power, each subchannel is corresponding to the modulation coding mode that special burst adopted that is transmitted, the instantaneous data rates of wireless terminal by the subchannel number of being distributed with and the modulation coding mode taked determine jointly.
In a wireless communication system of supporting the multi-user, the user can insert system or share Radio Resource with certain hybrid mode of these systems by adopting frequency division, time-division, the sign indicating number radio frequency that grades.Under some adopts system, because amplifier nonlinearity feature or other some factors that lead to errors, make in the base station when doing resource allocation for terminal, carry out link budget as adopting linear mode, just may obtain incorrect result.
For example in CDMA (code division multiple access) or OFDMA (OFDM) system, do not change the residing chain environment of transceiver and (promptly have identical base band transmit, identical path loss and channel condition, during identical factors such as interference level), when the working point of transmitter amplifier enters the inelastic region, by adjusting the transmitting power that amplifier gain changes transmitter, can not obtain consistent with it proportional signal to noise ratio increment, even in some cases, may occur when increasing transmitting power, the phenomenon that received signal to noise ratio worsens but takes place, and we are called this phenomenon the nonlinear characteristic of radio circuit.Especially when working in higher or very low transmit power level at transmitter, when promptly transmitter power amplifier is operated in two ends between its gain region, this feature performance more obvious.When amplifier gain is very high, because the mixed influence of various radio frequency factors such as intermodulation and amplitude limit, transmit and under the effect of the various non-linear factors of circuit, produce distortion and, show as the quality that transmits to descend along with the increase of transmit signal power along with the increase of amplifier gain runs down; When the power amplifier gain of transmitter is very low,, cause transmission signal quality also to descend and significantly deterioration along with transmit signal power because the noise in the transmitter circuitry and the power and the available signal power of interference can be compared.In both cases, all may be discontented with the requirement of pedal system by the accessible maximum signal to noise ratio of received signal.In addition aspect receiver, when received signal power is lower, as when approaching the receiving sensitivity of receiver, received signal to noise ratio may not be linear decline along with the decline of received signal power yet.Therefore, the signal to noise ratio of emission or received signal has been determined the demodulation signal to noise ratio upper limit of corresponding receiver under different capacity.When carrying out resource allocation, take into full account this signal to noise ratio upper limit, can judge concurrent number of subchannels, modulation system according to synchronization and required emission or the received power thresholding of each subchannel that obtains according to current link budget, whether can satisfy the signal to noise ratio requirement that restituted signal reaches, thereby can realize correction and constraint for resource allocation result.
Summary of the invention
In order to take into full account the circuit characteristic of each wireless terminal, revise because the inconsistency of the radio circuit characteristic of the wireless terminal that otherness caused of circuit manufacturing process, the present invention proposes a kind of resource allocation methods, terminal radio frequency characteristic parameter is used to retrain resource allocation of cordless communication network Uplink/Downlink and link maintenance based on terminal radio frequency characteristic parameter.This method may further comprise the steps:
A. the radio frequency characteristic parameter of terminal is measured, and be stored in this terminal;
B. described terminal reports the base station with its radio frequency characteristic parameter;
C. the base station is its distribute links resource based on the radio frequency characteristic parameter by described terminal to report.
Among the step a, described radio frequency characteristic parameter can be a terminal emission radio frequency characteristic parameter, also can be terminal received RF characteristic parameter, can also the two comprise simultaneously.Preferably, the emission radio frequency characteristic parameter is, when terminal adopts different transmit signal powers, and the accessible signal to noise ratio that draws respectively according to a certain criterion.Preferably, the received RF characteristic parameter is, when terminal adopts different received signal powers, and the accessible signal to noise ratio that draws respectively according to a certain criterion.Above-mentioned described criterion can be: a plurality of signal to noise ratios that measure during based on this transmitting/receiving signal power of employing draw certain particular value as accessible signal to noise ratio according to certain probability demands statistical computation.
Among the step b, described terminal can send to described base station with described radio frequency characteristic parameter in its registration process or in its normal course of communications.
Among the step c, the distribution of link circuit resource can perhaps based on described radio frequency characteristic parameter and terminal bandwidth demand, perhaps based on three's combination, be carried out based on described radio frequency characteristic parameter and link propagation characteristic parameter in described base station for described terminal.
The invention allows for a kind of system that adopts above-mentioned resource allocation methods, this method comprises one or more measuring units, one or more terminal and a base station:
Measuring unit is used for the radio frequency characteristic parameter of measuring terminals, and measurement result is passed to this terminal;
Terminal comprises a terminal data memory module, a terminal handler module and a terminal transceiver at least, and the terminal handler module links to each other with the terminal transceiver with the terminal data memory module; Wherein, the terminal data memory module is used to receive and store the radio frequency characteristic parameter from this terminal of measuring unit; The terminal handler module is used for the terminal radio frequency characteristic parameter of reading terminals data memory module and reports the base station by the terminal transceiver;
The base station comprises a base station transceiver, a base station processor module and a base station data memory module at least; The base station processor module links to each other with the base station data memory module with base station transceiver; Wherein, the base station processor module is used for that the terminal radio frequency characteristic parameter that base station transceiver receives is passed to the base station data memory module stores, and is this terminal distribution resource according to the parameter in the base station data memory module.
The invention has the advantages that and notified the characteristic information of resource distribution module with the radio circuit of terminal, this characteristic information to reflect the reception/transmission performance of terminal.By in resource allocation process, consider radiofrequency characteristics respectively based on wireless terminal, distinguish the reception/transmitting capacity of each wireless terminal, and with this constraints as transmitting power, thereby obtain of the suitable resource distribution of this wireless terminal, also can judge the validity of resource allocation result at current time.
Description of drawings
Fig. 1 is the schematic diagram that adopts the communication system of resource allocation methods of the present invention;
Fig. 2 is a flow chart of measuring radio frequency characteristic parameter;
Fig. 3 is one of operational flowchart that carries out resource allocation;
Fig. 4 be carry out resource allocation operational flowchart two.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Fig. 1 is for adopting the communication system schematic diagram of resource allocation methods of the present invention, the figure shows measuring unit, the wireless user terminal equipment (UT) and base station equipment (BS) that is used for mobile communication system such as ordinary individual's communication.The radio frequency characteristic parameter of measuring unit 10 measuring terminals, and measurement result is passed to this terminal store; Measuring unit 10 can be used as a specific installation in the system, also can be used as an accessory module and is placed in the terminal.Terminal 11 is when beginning to communicate by letter with base station 12, and base station 12 is its Resources allocation first according to the request of terminal 11; And in communication process, base station 12 will be periodically or aperiodicity ground being changed to it and carrying out Radio Resource and reshuffle according to the bandwidth demand of channel condition and terminal 11.Resource described here can comprise channel resource or power resource, perhaps is the combination of said two devices.
In this mobile communication system, terminal comprises a terminal data memory module 111, a terminal handler module 112 and a terminal transceiver 113, and terminal handler module 112 links to each other with terminal transceiver 113 with terminal data memory module 111; Wherein, the terminal data memory module is used to receive and store the radio frequency characteristic parameter from this terminal of measuring unit 10; Terminal handler module 112 is used for the terminal radio frequency characteristic parameter of reading terminals data memory module 111 and reports the base station by terminal transceiver 113; Terminal data memory module 111 can comprise the emission radio frequency characteristic parameter data block 1111 of terminal 11 as required, the perhaps received RF characteristic parameter data block 1112 of terminal 11, the perhaps combination of said two devices.
In this mobile communication system, the base station comprises a base station transceiver 123, base station processor module 122 and a base station data memory module 121; Base station processor module 122 links to each other with base station data memory module 121 with base station transceiver 123.The wireless signal 3 of base station transceiver 123 transmissions and receiving terminal 11, the terminal radio frequency characteristic parameter that base station processor module 122 receives base station transceiver 123 passes to base station data memory module 121 and stores, and is this terminal distribution resource according to the parameter in the base station data memory module 121.
The radio frequency characteristic parameter of terminal handler module 112 reading terminals from terminal data memory module 111, control terminal transceiver 113, the mode by wireless signal reports to base station 12 with this characteristic parameter.When base station 12 by air interface 3, when base station transceiver 123 correctly receives the radio frequency characteristic parameter of self terminal 11, it is stored in its data memory module 121 with certain form.When 12 pairs of terminals in base station 11 are carried out resource allocation, can be in some way, according in the base station data memory module 121 about the radio frequency features data of terminal 11, retrain and adjust its resource allocation result.
The mode of this information transmission can be finished when terminal 11 registrations, also can be under the communication process state in terminal 11 and finish, and can also be under other state in terminal 11 and finish.The mode that this information is transmitted can also be disposable, perhaps repeatedly finishes step by step.Can initiatively initiate the transmission of information by terminal 11, also can send dependent instruction to terminal 11 and initiate by base station 12.Terminal 11 is sent to the relevant radio frequency characteristic parameter of base station 12, can be whole radio frequency characteristic parameters that terminal is stored, or a part wherein, or by it as input, other correlation of trying to achieve according to certain rule.Field length in this information can be chosen arbitrarily, the element in the field should and terminal 11 be used for storing between all or part of data of data memory module 111 of radio frequency characteristic parameter and set up mapping relations.It may be man-to-man mapping or those skilled in the art any suitable mapping to understand.
In addition, for other method, as long as it satisfies the radio frequency features that measured value can be used to represent terminal 11, and measurement result is reported to the base station by terminal, and be used for constraints as its resource allocation process, or be used to adjust the strategy of its resource allocation, then the method all is applicable to the present invention.
Fig. 2 represents a specific embodiment that carries out the radio frequency characteristic parameter measurement for terminal.At first, definite radio frequency features set I (step S201) that needs the current terminal of measurement, for example, I needs the terminal of measurement in the set of adopting the fashionable snr value of different capacity and different concurrent channel group; I also can be that terminal is in the set of adopting the fashionable power threshold of different snr values and different concurrent channel group; I can also be the set of the concurrent channel combination of terminal when adopting different snr values and different capacity value.Power described here and signal to noise ratio can be emission (up link) power and the corresponding signal to noise ratio thereof of user terminal, also can be its reception (down link) power and corresponding signal to noise ratio thereof, also can be the set that comprises said two devices simultaneously.Variable i is initialized as 1 (step S202), and from the determined characteristic set to be measured of step S201, chooses the i item radio frequency features of need measuring, and measuring condition is set in view of the above measures (step S203).Measurement result is added up, determine threshold value and preservation (step S204 and S205) based on above-mentioned measuring condition.Afterwards, step S206 need do as judging: if finished the measurement of all radio frequency features of this user terminal, then finish whole measuring process, otherwise, begin to prepare the next radio frequency features (step S207) among the measuring assembly I.
Though Fig. 2 shows the example of the radio frequency characteristic parameter threshold value of a definite terminal, the present invention is not subjected to the restriction of this embodiment.For example, can pass through to measure other relevant circuit feature parameter, and adopt certain computational methods to obtain required threshold value indirectly; Perhaps, adopt the mode of certain interpolation again, determine all threshold values by measuring or according to the method described above, obtaining wherein a part of radio frequency characteristic parameter.The result of gained is stored in the data memory module of terminal.
The base station is the wireless terminal configurating channel resource that communicates with it, modulation coding mode etc. according to the current bandwidth demand of radio frequency characteristic parameter, current link-quality and terminal etc.Fig. 3 represents the specific embodiment of a resource allocation of the present invention.The processor module of base station is that terminal is carried out resource allocation, obtains the result (step S301) of a resource allocation, and it comprises code modulation mode (MCS), channel and the power resource information of this user terminal.With this allocation result as input information, give the radio frequency characteristic parameter of base station according to user terminal to send up, determine the signal to noise ratio (snr) upper limit (S302) that this user terminal adopts this kind allocative decision to reach, and judge whether this SNR satisfies the SNR requirement (S303) of the MCS of active user's employing, as satisfying, then accept this allocation result, otherwise, need adjust allocation result according to certain strategy, meet the demands up to SNR.If all do not satisfy the requirement of signal-noise ratio threshold, then this sub-distribution failure for the adjustment of allocation result.
Fig. 4 represents the specific embodiment of another resource allocation of the present invention.At first, when carrying out the required resource of active user's terminal and calculate, need obtain evaluated code modulation mode, and determine individual channel power (step S401) under this MCS according to the link budget of this user terminal.Here, distribute, then can calculate its individual channel transmitting power required under current MCS if carry out ascending resource; Distribute if carry out downlink resource, can calculate its individual channel received power under current MCS.According to the individual channel power of the determined user terminal of step S401 under evaluated MCS, the available channel and the power resource of system, and the relevant radio frequency features information that sends to the base station according to user terminal, determine its effective concurrent channel combination (step S402) under current MCS, the set of this effective concurrent channel combination has determined user terminal when adopting current MCS, the maximum bandwidth that can reliably reach.Step S403 judges according to the maximum bandwidth that current MCS can reach whether decision accepts to handle (step S404), the link that enters the back afterwards.
The embodiment that Fig. 3 and Fig. 4 represent has described the application of the present invention in resource allocation in detail, but from above-mentioned, it will be apparent for a person skilled in the art that, can change and revise and do not break away from the present invention in a broad sense, for example, concurrent channel combination can be revised as the concurrent number of channel, or, can adopt total transmitting power and do not adopt the individual channel transmitting power, or the like.Therefore the original idea of claim is all this change and modifications that cover as falling into true spirit of the present invention.
Claims (26)
1, a kind of resource allocation methods based on terminal radio frequency characteristic parameter is characterized in that, may further comprise the steps:
A. the radio frequency characteristic parameter of terminal is measured, and be stored in this terminal;
B. described terminal reports the base station with its radio frequency characteristic parameter;
C. the base station is its distribute links resource based on the radio frequency characteristic parameter by described terminal to report.
2, method according to claim 1 is characterized in that step a, and described radio frequency characteristic parameter is the emission radio frequency characteristic parameter of described terminal.
3, method according to claim 1 is characterized in that step a, and described radio frequency characteristic parameter is the received RF characteristic parameter of described terminal.
4, method according to claim 1 is characterized in that step a, and described radio frequency characteristic parameter comprises the emission and the received RF characteristic parameter of described terminal simultaneously.
According to claim 2 or 4 described methods, it is characterized in that 5, described emission radio frequency characteristic parameter is, when terminal adopts different transmit signal powers, the accessible signal to noise ratio that draws respectively according to a certain criterion.
6, method according to claim 5 is characterized in that, described criterion is: a plurality of signal to noise ratios that measure during based on this transmit signal power of employing draw certain particular value as accessible signal to noise ratio according to certain probability demands statistical computation.
According to claim 3 or 4 described methods, it is characterized in that 7, described received RF characteristic parameter is, when terminal adopts different received signal powers, the accessible signal to noise ratio that draws respectively according to a certain criterion.
8, method according to claim 7 is characterized in that, described criterion is: a plurality of signal to noise ratios that measure during based on this received signal power of employing draw certain particular value as accessible signal to noise ratio according to certain probability demands statistical computation.
9, method according to claim 1 is characterized in that step b, and described terminal sends to described base station with described radio frequency characteristic parameter in its registration process.
10, method according to claim 1 is characterized in that step b, and described terminal sends to described base station with described radio frequency characteristic parameter in its normal course of communications.
11, method according to claim 1 is characterized in that step c, and the distribution of link circuit resource is carried out based on described radio frequency characteristic parameter and link propagation characteristic parameter in described base station for described terminal.
12, method according to claim 1 is characterized in that step c, and the distribution of link circuit resource is carried out based on described radio frequency characteristic parameter and terminal bandwidth demand in described base station for described terminal.
13, method according to claim 1 is characterized in that step c, and the distribution of link circuit resource is carried out based on described radio frequency characteristic parameter, link propagation characteristic parameter and terminal bandwidth demand in described base station for described terminal.
14, a kind of system that adopts the described method of claim 1 is characterized in that, this system comprises one or more measuring units, one or more terminal and a base station:
Measuring unit is used for the radio frequency characteristic parameter of measuring terminals, and measurement result is passed to this terminal;
Terminal comprises a terminal data memory module, a terminal handler module and a terminal transceiver at least, and the terminal handler module links to each other with the terminal transceiver with the terminal data memory module; Wherein, the terminal data memory module is used to receive and store the radio frequency characteristic parameter from this terminal of measuring unit; The terminal handler module is used for the terminal radio frequency characteristic parameter of reading terminals data memory module and reports the base station by the terminal transceiver;
The base station comprises a base station transceiver, a base station processor module and a base station data memory module at least; The base station processor module links to each other with the base station data memory module with base station transceiver; Wherein, the base station processor module is used for that the terminal radio frequency characteristic parameter that base station transceiver receives is passed to the base station data memory module stores, and is this terminal distribution resource according to the parameter in the base station data memory module.
15, system according to claim 14 is characterized in that, described measuring unit is that the emission radio frequency characteristic parameter of terminal is measured.
16, system according to claim 14 is characterized in that, described measuring unit is that the received RF characteristic parameter of terminal is measured.
17, system according to claim 14 is characterized in that, described measuring unit is all measured the emission radio frequency characteristic parameter and the received RF characteristic parameter of terminal.
According to claim 15 or 17 described systems, it is characterized in that 18, described emission radio frequency characteristic parameter is, when terminal adopts different transmit signal powers, the accessible signal to noise ratio that draws respectively according to a certain criterion.
19, system according to claim 18 is characterized in that, described criterion is: a plurality of signal to noise ratios that measure during based on this transmit signal power of employing draw certain particular value as accessible signal to noise ratio according to certain probability demands statistical computation.
According to claim 16 or 17 described systems, it is characterized in that 20, described received RF characteristic parameter is, when terminal adopts different received signal powers, the accessible signal to noise ratio that draws respectively according to a certain criterion.
21, system according to claim 20 is characterized in that, described criterion is: a plurality of signal to noise ratios that measure during based on this received signal power of employing draw certain particular value as accessible signal to noise ratio according to certain probability demands statistical computation.
22, system according to claim 14 is characterized in that, the terminal handler module in the described terminal in the endpoint registration process, reports the base station with described radio frequency characteristic parameter by the terminal transceiver.
23, system according to claim 14 is characterized in that, the terminal handler module in the described terminal in the terminal normal course of communications, reports the base station with described radio frequency characteristic parameter by the terminal transceiver.
24, system according to claim 14 is characterized in that, the base station processor module in the described base station based on described radio frequency characteristic parameter and link propagation characteristic parameter, is carried out the distribution of link circuit resource for described terminal.
25, system according to claim 14 is characterized in that, the base station processor module in the described base station based on described radio frequency characteristic parameter and terminal bandwidth demand, is carried out the distribution of link circuit resource for described terminal.
26, system according to claim 14 is characterized in that, the base station processor module in the described base station based on described radio frequency characteristic parameter, link propagation characteristic parameter and terminal bandwidth demand, is carried out the distribution of link circuit resource for described terminal.
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| CN200810116582A CN101626603A (en) | 2008-07-11 | 2008-07-11 | Method and system for distributing resources based on terminal radio frequency characteristic parameter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012159298A1 (en) * | 2011-06-27 | 2012-11-29 | 华为技术有限公司 | Method and apparatus for implementing uplink data transmission |
| CN103002499A (en) * | 2011-09-14 | 2013-03-27 | 鼎桥通信技术有限公司 | Wireless resource allocation and optimization method and wireless communication system |
| WO2019028768A1 (en) * | 2017-08-10 | 2019-02-14 | 北京小米移动软件有限公司 | Method for information transmission adjustment, base station, and user equipment |
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2008
- 2008-07-11 CN CN200810116582A patent/CN101626603A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012159298A1 (en) * | 2011-06-27 | 2012-11-29 | 华为技术有限公司 | Method and apparatus for implementing uplink data transmission |
| CN102959888A (en) * | 2011-06-27 | 2013-03-06 | 华为技术有限公司 | Method and apparatus for implementing uplink data transmission |
| CN102959888B (en) * | 2011-06-27 | 2015-06-17 | 华为技术有限公司 | Method and apparatus for implementing uplink data transmission |
| CN103002499A (en) * | 2011-09-14 | 2013-03-27 | 鼎桥通信技术有限公司 | Wireless resource allocation and optimization method and wireless communication system |
| CN103002499B (en) * | 2011-09-14 | 2015-04-15 | 鼎桥通信技术有限公司 | Wireless resource allocation and optimization method and wireless communication system |
| WO2019028768A1 (en) * | 2017-08-10 | 2019-02-14 | 北京小米移动软件有限公司 | Method for information transmission adjustment, base station, and user equipment |
| CN109451820A (en) * | 2017-08-10 | 2019-03-08 | 北京小米移动软件有限公司 | Method, base station and the user equipment of adjustment information transmission |
| CN109451820B (en) * | 2017-08-10 | 2022-07-22 | 北京小米移动软件有限公司 | Method for adjusting information transmission, base station and user equipment |
| US11638271B2 (en) | 2017-08-10 | 2023-04-25 | Beijing Xiaomi Mobile Software Co., Ltd. | Method for information transmission adjustment, base station, and user equipment |
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Application publication date: 20100113 |