CN1711795A - A communication unit and method of communicating measurement reports therefor - Google Patents
A communication unit and method of communicating measurement reports therefor Download PDFInfo
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Abstract
A base station (101) comprises a measurement processor (117) determining physical layer measurement characteristics, such as a filtered transmit power, in response to an air interface physical layer parameter, such as the unfiltered transmit power, associated with a subscriber unit (103). It further comprises a communication element (119) for communicating measurement reports to a network element (109), such as an RNC. Further, the base station (101) comprises an update processor (121) for dynamically updating an interval between measurement reports in response to an operating characteristic of the cellular communication system. The interval may be updated by changing a measurement report frequency depending on the number of subscriber units supported, the duration they have been supported and the available resource. The interval may also be updated by a new measurement report only being generated when the physical layer measurement characteristic differs from the last reported physical layer measurement characteristic by more than a threshold.
Description
Technical field
The present invention relates to the method for a kind of communication unit and transmission measurement report, relate in particular to a kind of system that in cellular communication system, transmits measurement report.
Background technology
Fig. 1 shows the principle according to the conventional cellular communication system 100 of prior art.The geographic area is divided into some sub-districts 101,103,105 and 107, and each sub-district is by base station 109,111,113 and 115 services.The base station is by fixed network interconnects, and fixed network can transmit data between base station 101,103,105 and 107.Mobile radio station is served via wireless communication link by the base station in the residing sub-district of mobile radio station.In the example of Fig. 1, mobile radio station 117 is served via Radio Link 119 by base station 109, and mobile radio station 121 is served via Radio Link 123 by base station 111 etc.
When mobile radio station moved, mobile radio station can move to the area of coverage of another base station from the area of coverage of a base station,, moved to another sub-district from a sub-district that is.For example, mobile radio station 125 is served via Radio Link 127 by base station 113 at first.When mobile radio station was shifted to base station 115, mobile radio station entered the overlay region of two base stations 111 and 113, and in this overlay region, mobile radio station changes into by base station 115 and supports via Radio Link 129.In the time of in mobile radio station 125 further moves to sub-district 107, mobile radio station continues to be supported by base station 115.This is called transfer or the switching of mobile radio station between the sub-district.
The area of coverage of typical cellular communication system extends to whole country and comprises the hundreds of and even thousands of sub-districts of supporting thousands of and even millions of mobile radio stations.Communication from the mobile radio station to the base station is called up link, and the communication from the base station to the mobile radio station is called down link.
Make the data between any two base stations of base-station connected fixed network route, thereby a mobile radio station in the sub-district can be communicated with the mobile radio station in any other sub-district.In addition, fixed network comprises the gateway function that is used for such as the interconnection of the external network of public switch telephone network (PSTN), thereby allows mobile radio station to communicate by the communication terminal that land line is connected with land line phone and other.And fixed network comprises the multiple function that the management legacy cellular communications networks is required, comprises functions such as being used for route data, permission control, resource allocation, user's charging and mobile radio station authentication.
Now, the most general cellular communication system be called global system for mobile communications (GSM) the 2nd generation communication system.GSM uses the technology that is called time division multiple access (TDMA), and wherein user's separation realizes that by frequency carrier being divided into 8 time slots that separate each time slot can be distributed to a user respectively.The base station can be assigned single carrier wave or a plurality of carrier wave.A carrier wave is used for a pilot signal, and pilot signal further comprises broadcast message.Insert or between transfer period initial, this carrier wave is used to measure signal level from different base station by mobile radio station, and the information that is obtained is used for determining suitable Serving cell.To GSM tdma communication system further describe can referring to Bay Foreign Language Books (1992, ISBN2950719007) the The GSMSystem for Mobile Communications (mobile communication system) of the Michel Mouly in and Marie Bernadette Pautet.
At present, the 3rd generation system dispose, offer mobile subscriber's communication service with further enhancing.Adopt the most widely the 3rd generation communication system based on code division multiple access (CDMA), wherein the user separates by the different user that different extended codes and scrambler are distributed on the same carrier and realizes.Send signal and obtain spread spectrum, thereby the frequency spectrum of this signal is extended on the wide bandwidth by multiplying each other with the sign indicating number that is distributed.At receiver end, these yards are used for the signal that despreading receives, thus the primary signal of regenerating.Each base station has the sign indicating number of pilot tone of being exclusively used in and broadcast singal, and for GSM, this is used for the measurement of a plurality of sub-districts, to determine Serving cell.The example of using the communication system of this principle is the Universal Mobile Telecommunications System of developing at present (UMTS).Description to the CDMA of UMTS and wideband CDMA (WCDMA) pattern can be referring to Wiley ﹠amp; The Harri Holma (editor) of Sons (2001, ISBN 0471486876) and the WCDMA for UMTS (WCDMA that is used for UMTS) of Antti Toskala (editor)
In the UMTS cdma communication system, fixed network comprises core network and Radio Access Network (RAN).Core network routes to another part with data from the part of RAN, and is connected with other communication system interfaces.In addition, core network is carried out the many operations and the management function of cellular communication system.RAN supports wireless user equipment by the Radio Link as the part of air interface.The RAN of UMTS cellular communications networks comprises base station and the radio network controller (RNC) that is called Node B.RNC carries out the many controlled function relevant with air interface, comprises RRM and data are carried out route between appropriate nodes B.RNC also provides the interface between RAN and the core network.RNC and interdependent node B are called Radio Network System (RNS).
The common ground of all cellular communication systems is the Radio Links between the mandatory management of base station, makes that the employed resource of given communication link is low as far as possible.Thereby, make with mobile radio station between the caused interference of communicating by letter to reach minimum very important, therefore use minimum as far as possible transmitted power very important.And, as far as possible optimize resource allocation so that the communication capacity of communication system to reach maximum very important.Specifically,, grouping is dispatched for packet communication, make can the optimized communication system capacity and can realize required QoS parameter, this is very important.
In the UMTS communication system, most of air interface management is carried out in RNC.For example, the traffic scheduler that is used for packet communication realizes at RNC.In order effectively to carry out air interface management functions in RNC, RNC receives the information of various current air interface characteristics and parameter, and this is very important.For example, in order to carry out efficient scheduling, scheduler typically needs and expection transmitted power and the relevant information of the interference that packet caused that is used for different user.Therefore, Node B need transmit the bulk information relevant with air interface and give Node B, specifically transmits a large amount of metrical informations.
Therefore, the UMTS regulation and stipulation between Node B and RNC, measure message with the report of given frequency.Yet for higher report frequency, the computational resource that generates and handle measurement report requires to have increased.In addition, the traffic load on the communication link between Node B and the RNC has increased and has exceeded the communication capacity of link.Yet,, measure the probability that makes a mistake for current condition and increased for lower report frequency.Especially for the mobile radio station of low speed, initial measurement report may not represented typical case or average condition, but may represent for this mobile radio station is not typical specific fade condition.
Measurement report in the cellular communication system thereby have some shortcomings.Therefore, the system of the measurement report of realization improvement has advantage.
Summary of the invention
Therefore, the present invention preferably manages individually or slows down, relaxes or eliminate one or more in the above-mentioned shortcoming with any combination.
Specifically, the inventor has recognized that the current method of the measurement report that is used for cellular communication system is not best and can improves.Specifically, the inventor has recognized by the parameter or the feature of the report of measure of the change dynamically and can improve measurement report.
According to a first aspect of the invention, a kind of method that transmits measurement report in cellular communication system is provided, this cellular communication system has the fixed network of supporting telecommunication unit, this method may further comprise the steps: in first communication unit, according to the air interface physical layer parameter relevant, determine physical layer measurement characteristic with telecommunication unit; The measurement report that will comprise physical layer measurement characteristic is sent to network components from first communication unit; This method further may further comprise the steps: according to the operation characteristic of cellular communication system, dynamically upgrade the interval between the measurement report.
The present invention allows the measurement report of optimization from first communication unit to network components, to be fit to the current operation characteristic of cellular communication system.Specifically, measurement report can dynamically upgrade, and is effectively compromise to realize between the negative effect of particular report frequency.For example, update interval makes and can realize suitable trading off between required communication and computational resource and measurement report accuracy.For example, if having enough communication and computational resource, short interval then can be set, to improve the accuracy of measurement report.If available communication or computational resource descend, then can prolong and reduce accuracy at interval.
Therefore, the present invention can improve the measurement report in the cellular communication system, and can allow to increase flexibility, accuracy and minimizing particularly and use and communicate by letter or computational resource.First communication unit can be base station, for example Node B particularly.Network components for example can be radio equipment controller, for example RNC.Telecommunication unit can be the subscriber unit particularly, for example wireless user equipment, mobile radio station, communication terminal, personal digital assistant, laptop computer, embedded communication processor or any other communication component that communicates by air interface.
According to a feature of the present invention, operation characteristic comprises the number of the telecommunication unit that first communication unit supports.Preferably, the number of the telecommunication unit supported according to first communication unit of the interval between the measurement report and dynamically upgrading.The calculating of first communication unit and the communication resource be increasing because of the number of the telecommunication unit supported typically then.This is responded and upgrade at interval and can regulate measurement report, to be fit to current resource requirement and availability.
According to another characteristic of the invention, operation characteristic comprises the number of the telecommunication unit that network components supports.Preferably, the number of the telecommunication unit supported according to network components of the interval between the measurement report and dynamically upgrading.Increasing of the number of the telecommunication unit that the calculating of network components and the communication resource are then typically supported because of network components.This is responded and upgrade at interval and can regulate measurement report, to be fit to current resource requirement and availability.
According to another characteristic of the invention, operation characteristic comprises the duration that first communication unit is supported telecommunication unit.What specifically, this at interval can be because of the duration is elongated and elongated.Given first communication unit supports that the time of telecommunication unit is long more, and then the accuracy of physical layer measurement characteristic is tended to high more.What specifically, accuracy can be along with Mean Time Measurement is elongated and elongated.This is responded and upgrade at interval and can regulate measurement report, to be fit to current accuracy of measurement.
According to another characteristic of the invention, operation characteristic comprises the difference between the physical layer measurement characteristic of the physical layer measurement characteristic of first measurement report and second measurement report.For example, this interval can be set to corresponding to changing the time that time of set-point is separated by with physical layer measurement characteristic.Specifically, if physical layer measurement characteristic for example relates to transmitted power, second measurement report that has sent when then this interval can surpass specified rate according to the change in transmitted power upgrades.This allows measurement report to adapt to the dynamic change of physical layer measurement characteristic.
According to another characteristic of the invention, operation characteristic comprises the available communication ability of the connection between first communication unit and the network components.This has realized using effectively available communication capacity and has reduced the probability that it is exceeded.
According to another characteristic of the invention, measurement report sent out periodically basically and measurement report between the interval upgrade by the frequency of revising measurement report.This allows to realize update interval between the measurement report with suitable, effective and easy mode.
According to another characteristic of the invention, when first value of physical layer measurement characteristic than previous measurement report in the report value of physical layer measurement characteristic when exceeding a threshold value, then transmit new measurement report.Preferably, this threshold value relates to a value that increases and/or reduce of physical layer measurement characteristic.This allows only just to transmit measurement report when measured parameter generation obvious variation.Specifically, when physical layer measurement characteristic reaches a value, can transmit new measurement report, this value as with the threshold difference of the physical layer measurement characteristic of previous report.
Preferably, this threshold value determines that according to previous physical layer measurement characteristic specifically, previous physical layer measurement characteristic can be included in the previous measurement report.Specifically, threshold value can depend on previous measured value or the physical layer measurement characteristic of being reported.Specifically, threshold value can be the relative value of the physical layer measurement characteristic of previous report, for example is 10% of the previous physical layer measurement characteristic of reporting.This allows measurement report to adapt to current main operating condition, specifically adapts to current main measured value.
According to another characteristic of the invention, network components comprises resource allocator.Be adapted to that therefore can be provided for network components is used for resource allocation when effective measurement report of precondition, thereby improve resource allocation and improve capability of communication system and/or service quality.
According to another characteristic of the invention, network components comprises traffic scheduler.Be adapted to that therefore can be provided for network components is used for flow scheduling when effective measurement of precondition, thereby improve flow scheduling.
According to another characteristic of the invention, physical layer measurement characteristic is a power measurement characteristic, and air interface physical layer parameter is the transmitted power relevant with telecommunication unit.Preferably, relevant with telecommunication unit transmitted power is the transmitted power that sends to first communication unit of this telecommunication unit.Therefore, the measurement report of the transmitted power relevant with telecommunication unit can adapt to current service conditions, thereby improves measurement report and improve accuracy.This for example can help resource allocation or flow scheduling, therefore improves the performance of communication system.
According to a second aspect of the invention, a kind of communication unit that is used for cellular communication system is provided, this cellular communication system has the fixed network of supporting telecommunication unit, this communication unit comprises: measurement processor, be used for determining physical layer measurement characteristic according to the air interface physical layer parameter relevant with telecommunication unit; Communication component, the measurement report that is used for comprising physical layer measurement characteristic is sent to network components; More new processor is used for the operation characteristic according to cellular communication system, dynamically upgrades the interval between the measurement report.
According to another characteristic of the invention, communication unit further comprises: measuring unit is used to carry out power measurement; Filter is used for first rate according to the power measurements of power measurements generation through filtering; And wherein measurement processor generates physical layer measurement characteristic with first rate according to the power measurements through filtering basically; And described communication component upgrades the interval between the measurement report, and need not transmit some power measurement characteristic to network components.
Description of drawings
With reference to the accompanying drawings, by example embodiments of the invention are described.In the accompanying drawings:
Fig. 1 shows the cellular communication system according to prior art;
Fig. 2 shows the UMTS communication system that comprises the base station according to an embodiment of the invention;
Fig. 3 shows the example of measurement processor according to an embodiment of the invention;
Fig. 4 shows the example as the value that involves measurement after filtration of the physical layer attributes variable of the function of time and gained;
Fig. 5 shows the method for transmission measurement report according to an embodiment of the invention;
Fig. 6 shows the example of the measurement report of the physical layer attributes of dynamically upgrading according to an embodiment of the invention; With
Fig. 7 shows the example of the measurement report of the physical layer attributes of dynamically upgrading according to an embodiment of the invention.
Embodiment
Below description the embodiment that is used for the UMTS communication system is mainly described, but obviously, the present invention is not limited to this and uses, but can be applied to many other cellular communication systems.
Fig. 2 shows the UMTS communication system 100 that comprises base station 101 according to an embodiment of the invention.In the example shown, 3 different telecommunication units are supported in base station 101, and telecommunication unit is subscriber unit 103,105 specifically. Subscriber unit 103 and 105 with base station 101 between communicate by letter by via the communication link 107 of air interface.Base station 101 is connected to radio network controller (RNC) 109.In addition, other base stations 111 are connected to RNC109.
RNC 109 carries out a plurality of wireless and air interface management functions that is used for base station 101 and 111, comprises resource allocation, flow scheduling, Service Quality Management and handover management.Many functions in these functions based on can only base station 109 and 111 or subscriber unit 103 and 105 on the air interface parameters determined.Therefore, base station 101 with 111 and/or subscriber unit 103 and 105 carry out a plurality of pattern measurements relevant with the physical layer of air interface.These measurements can comprise definite inner parameter, for example are used for the transmitted power with particular subscriber unit or base station communication.Alternatively or in addition, measurement can comprise the measurement of external parameter, specifically comprise the measurement of the parameter relevant, for example interference level with wireless environment.
In typical UMTS communication system, RNC 109 typically also is connected to the service node (SGSN) of one or more service GPRSs, and these service nodes route to the grouping destination with grouped data.
In a preferred embodiment, RNC 109 comprises resource allocator particularly, and this resource allocator distributes available radio resources between difference service and subscriber unit.Resource allocation part ground is in the physical layer measurement characteristic that receives from the base station.Alternatively or in addition, RNC 109 comprises traffic scheduler, this traffic scheduler dispatches information block to different subscriber unit.For effective schedule packet transmissions, must consider to be used for the radio condition of different subscribers unit, thereby come operation dispatching according to the physical layer measurement characteristic that is received from the base station.Specifically, the transmitted power of base station can be a limiting factor to resource allocation and scheduling under many circumstances.Therefore, the physical layer measurement characteristic that is received from the base station comprises a sign that is used for the expection transmitted power of communicating by letter with particular subscriber unit.Therefore, the execution of resource allocation and scheduling makes the expection transmitted power that is used to make up be lower than maximum.
Fig. 3 shows the example of measurement processor 117 according to an embodiment of the invention.Measurement processor 117 comprises first filter 301, and it receives the measurement data relevant with physical layer.Specifically, measurement data can be the measurement data of the transmitted power controlled of power control loop.This measurement data can be received from any suitable source, comprises internal measurement data in the base station or the measurement data that receives from the subscriber unit by air interface.This measurement data can relate to inner parameter or external parameter.
In a preferred embodiment, base station 101 further comprises a measuring unit (not shown), and it carries out power measurement, and specifically the state according to power control loop obtains the transmitted power valuation.Power measurements is provided for first filter 301 with any suitable speed.The performance number that first filter 301 generates through filtering, for typical UMTS base station, the performance number of process filtering is provided for second filter 303.Second filter 303 carries out further filtering according to the parameter sets that is received from input 305 to power measurements.Therefore, second filter 303 generates the power measurements of process filtering according to this power measurements.Power measurements is provided periodically with given frequency.In traditional base station, frequency can be set to the value between 10Hz and the 1Hz, in case but the setting then remain unchanged.
Second filter 303 is connected to measurement report generator 307.Power measurements through filtering is provided for measurement report generator 307, and measurement report generator 307 comprises this power measurements in measurement report.Then, measurement report is provided for communication component 119, to be sent to RNC 109.Measurement report generator 307 can be measured input 311 by second and receive further measured value.Measurement report generates by parameter input 309 pre-selection parameters that receive according to a plurality of.In traditional UMTS base station, measurement report is transmitted with constant frequency.Constant measurement report frequency can be arranged between 1Hz and the 10Hz.
Fig. 4 shows the example as the value that involves measurement after filtration of the physical layer attributes variable of the function of time and gained.Fig. 4 shows the typical measurement report in traditional UMTS base station.Fig. 4 shows the concrete example 401 as the transmit power variation of the function of time.In addition, the transmission power value 403 through filtering is depicted as time to time change.Therefore shown example reflects the initializaing variable of the performance number of transmission power value and process filtering corresponding to the measuring process of carrying out in the incipient stage that sends.Transmitted power changes obvious and initially relatively low for favourable propagation conditions.Along with the subscriber unit enters the decay environment, transmitted power increases, and transmitted power continues along with the variation of propagation and disturbed condition to change.Transmission power value 403 through filtering initially is substantially equal to the still convergence mean value along with the elongated of the time that can average of transmitted power.
Fig. 4 further shows respectively the transmission power value with report speed 407 reports of the report speed 405 of 10Hz and 1Hz.In this example, little the time (antidamping), therefore first measurement report 405 100ms after and 407 is worth much lower than typical case or average transmitting power power measurement from path loss.Equally, the expection transmitted power is not represented in this measurement, and using the measured value of this report to cause for example resource allocator among the RNC 109 or traffic scheduler to occur probably is not perfect performance.For the maximum report speed of 10Hz, the power measurement values of being reported 405 promptly tends to average or representative value, has reflected the convergence in second filter 303.Yet,, just receive new measurement report after 1 second behind first measurement report for the report speed of 1Hz.In this interim, any function among the RNC 109 depends on the non-representational value of first measurement report.This will seriously reduce for example performance of traffic scheduler.After second measurement report, this measured value should be representational and after this, measures speed for two and can both anticipate identical performance.
Therefore, low frequency measurement is reported in and has realized the performance that reduces among the RNC 109.Yet higher report speed has brought excessive burden for the communication capacity of the communication link (Iub interface) of base station 101 and RNC 109.This further needs too much computational resource in the base station 101 to generate measurement report and to need too much computational resource among the RNC 109 to handle measurement report.
In this preferred embodiment, base station 101 further comprises more new processor 121.More new processor 121 is connected to measurement processor 117 and according to the operation characteristic of cellular communication system and dynamically upgrade interval between the measurement report.
Fig. 5 shows the method for transmission measurement report according to an embodiment of the invention.This method is applicable to the base station 101 of Fig. 2 and will be described with reference to figure 2.
In step 501, physical layer measurement characteristic is determined according to the air interface physical layer parameter relevant with telecommunication unit.In this preferred embodiment, measurement processor generates physical layer measurement characteristic according to the filtering to the transmitted power measurement data.In step 503, more new processor 121 is determined the appropriate interval between the measurement reports.In step 505, measurement report is with the determined appropriate interval of new processor more and generate.Specifically, more new processor can upgrade at interval by generation that detects particular event and the generation that triggers measurement report in response.In step 507, the measurement report that comprises physical layer measurement characteristic sends to RNC 109 by communication component 119.
Interval between the measurement report can be upgraded in any suitable manner.In this preferred embodiment, this interval is controlled by still sending to measure with the frequency that dynamically updates periodically basically.For example, the first report frequency can be used in the initial gap, can use second and slower frequency after this.Fig. 6 shows the example of the measurement report of the physical layer attributes of dynamically upgrading according to an embodiment of the invention.The transmitted power that Fig. 6 shows transmitted power variation 401 identical with Fig. 4 and process filtering changes 403.
In this example, measurement report initially generates with higher speed.Thereby as shown in Figure 6, measurement report 601 generates with the speed of 10Hz, that is, the measurement report interval of 100ms generates.After initial 500ms, suppose that filter output reasonably restrains to representative value (situation in the example as shown in Figure 6).Therefore, the report of measurement is converted to lower frequency.In the example of Fig. 6, this frequency generates after 1 second after first measurement corresponding to the measurement report time interval and next measurement report 603 of 600ms.After this measurement report can specifically can comprise that with minimum as far as possible speed it is 1Hz for the UMTS Node B with lower rate reports.
Therefore, this method allows measurement report higher in starting stage speed, and the measurement of reporting in the starting stage is likely wrong and changes basically, and lower the starting stage after, thereby has reduced communication and computational resource is born.
Interval between the measurement report can be upgraded according to any suitable operation characteristic of cellular communication system.
In one embodiment, operation characteristic comprises the number of the telecommunication unit that first communication unit supports.In this preferred embodiment, be that the number of the subscriber unit of serving base station is provided with at interval according to the base station.The subscriber unit that given base station is served is many more, then the required generation in base station and to send the measurement report of RNC to many more.When calculating and communication resource when all constant basically, the number of the subscriber unit of being supported is lower, and then communication and the computational resource that can use of each subscriber unit is more, thereby allows to be used for the frequency raising of the measurement report of each subscriber unit.In this preferred embodiment, the increase of the number of the subscriber unit that the interval between the measurement report is supported because of the base station increases.Specifically, the number of the subscriber unit supported, base station is defined as having distributed the number of the subscriber unit of Dedicated Control Channel in this preferred embodiment.
Alternatively or in addition, operation characteristic can comprise the number of the telecommunication unit that network components supports.For the base station, the number of measurement report increases, and then the resource requirement of network components typically increases.Therefore, the interval between the measurement report can be preferably increases because of the increase of the number of the telecommunication unit supported.In this preferred embodiment, the network components that is the RNC form is determined RNC institute serving base station number of users of supporting and the available resources that can be identified for the measurement report of each base station.This value can be reported to the base station, and it can regulate the measurement report time interval that is used for each subscriber unit respectively then, the feasible number that does not exceed total measurement report that is distributed.
Alternatively or in addition, operation characteristic can comprise the duration that first communication unit is supported telecommunication unit.For example, as described previously, high measurement report frequency can be set and lower measurement report frequency can be set for follow-up interval for the initial gap.This may also not restrain for the measurement report resource allocation effectively measured value basically and may change tangible subscriber unit in the short time interval.In this preferred embodiment, the base station can be detected Dedicated Control Channel particularly and be assigned to the time span of subscriber unit and according to this time span measurement report frequency has been set.
Alternatively or in addition, operation characteristic comprises the difference between the physical layer measurement characteristic of the physical layer measurement characteristic of first measurement report and second measurement report.Specifically, the measurement report time interval or frequency can be provided with according to the difference between the measured value of follow-up measurement report.For example, can detect the difference between two measured values of follow-up measurement report, and for lower difference, can be elongated and next measurement report between the interval.In another embodiment, can come to upgrade dynamically and continuously measurement report frequency according to the difference between the measured value of measurement report.Specifically, whether this method may be used for detecting measurement report values and restrain to a stable value, makes measurement report frequency can become big.
Alternatively or in addition, operation characteristic can comprise the available communication ability of the connection between first communication unit and the network components.In this preferred embodiment, this interval can be further be provided with according to the reserve capacity of the communication link between base station 101 and the RNC 109.Therefore, but measurement report frequency can increase and near heap(ed) capacity the time, reduce in the communication capacity time spent.
In one embodiment, this upgrades by only transmitting new measurement data when specified conditions take place at interval.Specifically, when the report value of physical layer measurement characteristic surpasses a threshold value in first of physical layer measurement characteristic is worth than previous measurement report, transmit new measurement report.In the present embodiment, monitor physical layer parameter continuously, and when physical layer parameter and the measurement reported last time depart from specified rate, generate and also transmit new the measurement such as transmitted power.Specifically, physical layer measurement characteristic can be used for representing physical layer parameter, therefore when physical layer measurement characteristic during than the super individual given threshold value of the physical layer measurement characteristic of before having reported, can generate new measurement data.
In the present embodiment, the more new processor 121 that is used for each measurement report was determined higher limit and the lower limit that physical layer parameter or physical layer measurement characteristic must exceed before new measurement report is sent out.Higher limit determines that by the measured value that this threshold value is added to previous measurement report lower limit is determined by deduct this threshold value from this measurement report measured value.In this preferred embodiment, use identical threshold value to determine higher limit and lower limit, but in other embodiments, can use different threshold values to determine higher limit and lower limit.
In the present embodiment, physical layer parameter is determined according to previous physical layer measurement characteristic generating the threshold value that should increase or reduce before the new measurement report.For example, threshold value can be the percentage of the measured value of previous report, therefore no matter how many absolute values is, all generates new measurement report for identical relative difference.In certain embodiments, threshold value can be determined according to initial physical layer measurement characteristic.For example, threshold value can change according to the duration of distance initial measurement report.
Fig. 7 shows the example of the measurement report that dynamically upgrades of physical layer attributes according to an embodiment of the invention, and wherein measurement report generates according to the specified conditions that taken place.The transmitted power that Fig. 7 shows transmitted power variation 401 identical with Fig. 4 and 6 and process filtering changes 403.
In the example of Fig. 7, first measurement report transmits after 100ms.More new processor 121 is determined first upper limit threshold 703 by the measured value 701 that adds predetermined absolute threshold to first measurement report.More new processor 121 further deducts this threshold value from the measured value 701 of first measurement report.Yet this has caused negative transmit power threshold, and therefore first lower threshold 705 is set to half of measured value 701 of first measurement report.The first upper and lower bound threshold value 703 and 705 is transferred into measurement processor 117, and measurement processor 117 constantly monitors the transmission power value through filtering, whether reaches threshold value to detect.
In the example of Fig. 7, when the transmit power variation 403 through filtering reaches first upper limit threshold 703, therefore generate second measurement report 707 and send RNC 109 to.In response, more new processor 121 generates second upper limit threshold 709 by the measured value 707 that this threshold value is added into second measurement report, generates second lower threshold 711 by deduct this threshold value from the measured value 707 of second measurement report.These values 709 and 711 are transferred into measurement processor 117.When measurement processor 117 detects when surpassing upper limit threshold through the transmitted power of filtering, generate the 3rd measurement report 713 and be sent to RNC 109.Therefore, more new processor 709 is determined the 3rd upper and lower bound threshold value 715 and 717.In the concrete example of Fig. 7, these threshold values are not exceeded, and therefore do not generate further measurement report.
In this embodiment, guaranteed that network components (for example RNC 109) always knows the significant change in the physical layer measurement characteristic, provide the essential measurement report of this information to be transmitted though only be useful on.Therefore require to have realized high accuracy with low communication and computational resource.
The present invention can realize with any suitable form, comprise any combination of hardware, software, firmware or this three.Yet preferably, the present invention is implemented as the computer software that moves on one or more data processors.The parts of embodiments of the invention and element can be positioned on core network, Radio Access Network or any suitable physics or position of function.In fact, this function can be implemented as the part of individual unit, a plurality of unit or other functional units.Equally, the present invention can be implemented on the individual unit or can physics and be distributed in the network functionally.
Though described the present invention in conjunction with the preferred embodiments, the present invention is not limited to concrete form described herein.On the contrary, scope of the present invention only limits by appended claim.
Claims (30)
1. method that in cellular communication system, transmits measurement report, described cellular communication system has the fixed network of supporting telecommunication unit, said method comprising the steps of:
In first communication unit,, determine physical layer measurement characteristic according to the air interface physical layer parameter relevant with telecommunication unit;
The measurement report that will comprise physical layer measurement characteristic is sent to network components from first communication unit;
Described method further may further comprise the steps:
According to the operation characteristic of cellular communication system, dynamically upgrade the interval between the measurement report.
2. the method for claim 1, wherein said operation characteristic comprise the number of the telecommunication unit that first communication unit supports.
3. each described method in the claim as described above, wherein said operation characteristic comprise the number of the telecommunication unit that network components supports.
4. each described method in the claim as described above, wherein said operation characteristic comprises the duration that first communication unit is supported telecommunication unit.
5. each described method in the claim as described above, wherein said operation characteristic comprise the difference between the physical layer measurement characteristic of the physical layer measurement characteristic of first measurement report and second measurement report.
6. each described method in the claim as described above, wherein said operation characteristic comprises the available communication ability of the connection between first communication unit and the network components.
7. each described method in the claim as described above, wherein said measurement report sent out periodically basically and measurement report between the interval upgrade by the frequency of revising measurement report.
8. each described method in the claim as described above, wherein, when first value of physical layer measurement characteristic than previous measurement report in the report value of physical layer measurement characteristic when exceeding a threshold value, transmit new measurement report.
9. method as claimed in claim 8, wherein said threshold value relates to the value that is increased of physical layer measurement characteristic.
10. method as claimed in claim 8, wherein said threshold value relates to the value that is reduced of physical layer measurement characteristic.
11. as each the described method among the claim 8-10, wherein said threshold value is determined according to previous physical layer measurement characteristic.
12. method as claimed in claim 11, wherein said previous physical layer measurement characteristic is included in the previous measurement report.
13. as each the described method among the claim 11-12, wherein said previous physical layer measurement characteristic is an initial physical layer measurement features.
14. the described method of each in the claim as described above, wherein said first communication unit is the base station.
15. the described method of each in the claim as described above, wherein said network components comprises resource allocator.
16. the described method of each in the claim as described above, wherein said network components comprises traffic scheduler.
17. the described method of each in the claim as described above, wherein said telecommunication unit is by the first communication unit support.
18. method as claimed in claim 17, wherein said physical layer measurement characteristic are power measurement characteristic and described air interface physical layer parameter is the transmitted power relevant with telecommunication unit.
19. the described method of each in the claim as described above, wherein, the described transmitted power relevant with telecommunication unit is the transmitted power of first communication unit when being sent to telecommunication unit.
20. computer program of realizing each the described method in the claim as described above.
21. a communication unit that is used for cellular communication system, described cellular communication system have the fixed network of supporting telecommunication unit, described communication unit comprises:
Measurement processor is used for determining physical layer measurement characteristic according to the air interface physical layer parameter relevant with telecommunication unit;
Communication component, the measurement report that is used for comprising physical layer measurement characteristic is sent to network components; With
More new processor is used for the operation characteristic according to cellular communication system, dynamically upgrades the interval between the measurement report.
22. communication unit as claimed in claim 21, wherein said operation characteristic comprise the number of the telecommunication unit that first communication unit supports.
23. as each the described communication unit among the claim 21-22, wherein said operation characteristic comprises the number of the telecommunication unit that network components supports.
24. as each the described communication unit among the claim 21-23, wherein said operation characteristic comprises the duration that first communication unit is supported telecommunication unit.
25. as each the described communication unit among the claim 21-24, wherein said operation characteristic comprises the difference between the physical layer measurement characteristic of the physical layer measurement characteristic of first measurement report and second measurement report.
26. as each the described method among the claim 21-25, wherein, when first value of physical layer measurement characteristic than previous measurement report in the report value of physical layer measurement characteristic when exceeding a threshold value, described communication component operationally transmits new measurement report.
27. as each the described communication unit among the claim 21-26, wherein said physical layer measurement characteristic is that power measurement characteristic and described air interface physical layer parameter are the transmitted powers relevant with telecommunication unit.
28. communication unit as claimed in claim 27, wherein, the described transmitted power relevant with telecommunication unit is the transmitted power of first communication unit when being sent to telecommunication unit.
29. each the described communication unit as among the claim 27-28 further comprises:
Measuring unit is used to carry out power measurement;
Filter is used for first rate according to the power measurements of power measurements generation through filtering;
And wherein measurement processor generates physical layer measurement characteristic with first rate according to the power measurements through filtering basically; And described communication component upgrades the interval between the measurement report, and need not transmit some power measurement characteristic to network components.
30. as each the described communication unit among the claim 21-29, wherein said communication unit is the base station.
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| GB0225979.4 | 2002-11-07 | ||
| GB0225979A GB2395398B (en) | 2002-11-07 | 2002-11-07 | A communication unit and method of communicating measurement reports therefor |
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| CN1711795A true CN1711795A (en) | 2005-12-21 |
| CN100553376C CN100553376C (en) | 2009-10-21 |
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| CNB2003801029153A Expired - Lifetime CN100553376C (en) | 2002-11-07 | 2003-10-03 | The method of communication unit and transmission measurement report thereof |
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| EP (1) | EP1563703A1 (en) |
| CN (1) | CN100553376C (en) |
| AU (1) | AU2003283440A1 (en) |
| GB (1) | GB2395398B (en) |
| WO (1) | WO2004043101A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101321356B (en) * | 2007-06-05 | 2012-04-18 | 中兴通讯股份有限公司 | Method for tracing survey report in mobile communication system, and its measuring apparatus |
| WO2012062105A1 (en) * | 2010-11-09 | 2012-05-18 | 中兴通讯股份有限公司 | Method, device and terminal for filtering measurement result |
| US10070332B2 (en) | 2007-06-21 | 2018-09-04 | Interdigital Technology Corporation | Method and apparatus for measurement reporting and event-triggered periodic measurement reporting in an evolved universal terrestrial radio access network |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4438493B2 (en) * | 2004-04-21 | 2010-03-24 | 日本電気株式会社 | Mobile communication system, radio base station, mobile station, and transmission power control method used therefor |
| CN100442936C (en) * | 2006-04-12 | 2008-12-10 | 华为技术有限公司 | Method and device for switching in wireless telecommunication system |
| US20070264938A1 (en) * | 2006-05-10 | 2007-11-15 | Bhaskar Srinivasan | Method and system for adaptive link monitoring in wireless sensor networks |
| KR101169842B1 (en) * | 2007-01-30 | 2012-07-30 | 콸콤 인코포레이티드 | Control channel constraints in wireless communications |
| US8892108B2 (en) | 2007-01-30 | 2014-11-18 | Qualcomm Incorporated | Control channel constraints in wireless communications |
| US8743774B2 (en) | 2007-01-30 | 2014-06-03 | Qualcomm Incorporated | Resource requests for a wireless communication system |
| WO2009035397A1 (en) | 2007-09-11 | 2009-03-19 | Telefonaktiebolaget Lm Ericsson (Publ) | Measurement control based on rbs processing capability |
| EP2491740A1 (en) | 2009-10-23 | 2012-08-29 | Telefonaktiebolaget L M Ericsson (PUBL) | Arrangements and methods in communication nodes |
| EP2553966A1 (en) * | 2010-04-01 | 2013-02-06 | Nokia Siemens Networks Oy | Measurement reporting in communications systems |
| CN107615820B (en) * | 2015-06-01 | 2020-10-27 | 瑞典爱立信有限公司 | Method and arrangement used in a cluster manager, radio node and control node |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5603081A (en) * | 1993-11-01 | 1997-02-11 | Telefonaktiebolaget Lm Ericsson | Method for communicating in a wireless communication system |
| US5859838A (en) * | 1996-07-30 | 1999-01-12 | Qualcomm Incorporated | Load monitoring and management in a CDMA wireless communication system |
| US6141565A (en) * | 1997-11-13 | 2000-10-31 | Metawave Communications Corporation | Dynamic mobile parameter optimization |
| US7006530B2 (en) * | 2000-12-22 | 2006-02-28 | Wi-Lan, Inc. | Method and system for adaptively obtaining bandwidth allocation requests |
| SE514361C2 (en) * | 1999-06-04 | 2001-02-12 | Ericsson Telefon Ab L M | Method and device in mobile packet data network |
| GB2358550A (en) * | 2000-01-18 | 2001-07-25 | Motorola Israel Ltd | Battery saving strategy in cellular systems based on a mobile assisted handover process |
| GB2372676A (en) * | 2001-02-21 | 2002-08-28 | Ericsson Telefon Ab L M | Preventing overload in a telecommunications system |
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2002
- 2002-11-07 GB GB0225979A patent/GB2395398B/en not_active Expired - Lifetime
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2003
- 2003-10-03 CN CNB2003801029153A patent/CN100553376C/en not_active Expired - Lifetime
- 2003-10-03 WO PCT/EP2003/050689 patent/WO2004043101A1/en not_active Application Discontinuation
- 2003-10-03 EP EP03775408A patent/EP1563703A1/en not_active Ceased
- 2003-10-03 AU AU2003283440A patent/AU2003283440A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101321356B (en) * | 2007-06-05 | 2012-04-18 | 中兴通讯股份有限公司 | Method for tracing survey report in mobile communication system, and its measuring apparatus |
| US10070332B2 (en) | 2007-06-21 | 2018-09-04 | Interdigital Technology Corporation | Method and apparatus for measurement reporting and event-triggered periodic measurement reporting in an evolved universal terrestrial radio access network |
| WO2012062105A1 (en) * | 2010-11-09 | 2012-05-18 | 中兴通讯股份有限公司 | Method, device and terminal for filtering measurement result |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1563703A1 (en) | 2005-08-17 |
| AU2003283440A1 (en) | 2004-06-07 |
| CN100553376C (en) | 2009-10-21 |
| WO2004043101A1 (en) | 2004-05-21 |
| GB0225979D0 (en) | 2002-12-11 |
| GB2395398B (en) | 2007-05-23 |
| GB2395398A (en) | 2004-05-19 |
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