Background technology
In order to adapt to the high-speed radio business demand, the 3GPP of International Standards Organization (3rdGeneration Partnership Project, third generation partner program) etc. formulate the tissue of wireless communication standard with OFDM (Orthogonal Frequency DivisionMultiplexing, abbreviating OFDM as) technology includes the next generation wireless communication system in, for example, Long Term Evolution (Long Term Evolution the abbreviates LTE as) system of studying at present.The employing orthogonal frequency division multiplexi can make the terminal service signal each other that belongs to same sub-district keep quadrature, thereby avoids the terminal room phase mutual interference of same sub-district.In order to improve frequency efficiency, generally adopting frequency duplex factor as one is 1 cellular layout, and still, this has inevitably brought presence of intercell interference (Inter-Cell Interference abbreviates ICI as).Therefore, how to reduce the major issue that presence of intercell interference becomes the next generation wireless communication system.
Inter-Cell Interference Coordination (Inter-Cell Interference Coordination abbreviates ICIC as) is called partial frequency multiplexing or soft-frequency reuse usually again, is at present by the technology that is used to reduce presence of intercell interference of extensive discussions.The core concept of ICIC is: judge that at first service terminal is sub-district inside terminals or cell edge terminal, by the diverse location type terminals is distributed different resources, make the used resource quadrature of edge termination between neighbor cell as far as possible, thereby reduce the interference of minizone.Because this technology is used flexibly, realizes simple, satisfactory for result, so become the mainstream technology of minimizing presence of intercell interference very soon.The problem that utilization ICIC technology at first will solve is how distinguishing cell inside terminals and cell edge terminal.
In the discussion of present 3GPP, determine that terminal location mainly is the mensuration by pilot signal strength, be specially reference symbol energy (Reference Symbol Received Power abbreviates RSRP as) and measure.The name of submitting to 3GPP in October, 2007 is called " band/not with the Inter-Cell Interference Coordination scheme of business load indication: On Inter-cell InterferenceCoordination Schemes without/with Traffic Load Indication " (motion number: point out in motion R1-074444) that RSRP measures can provide ICIC needed geographical location information.And, need know more customer position information simultaneously in order to make the bigger effect of ICICI performance.
The name of submitting to 3GPP in February, 2006 is called " performance of the descending semi-static frequency planning presence of intercell interference weakening technology of EUTRA: Performance of Inter-CellInterference Mitigation with Semi-Static Frequency Planning forEUTRA Downlink " (motion number: in motion R1-060368), just point out according to location information of terminals, it is good more to incorporate the systematic function that the many more ICIC of number of cell edge terminal bring in limited scope into, more RSRP report and can bring big signaling consumption and high amount of battery consumption simultaneously, how reducing this signaling consumption and amount of battery consumption is a problem, be called " the RSRP measurement triggering that ICIC is newly-increased: Additional RSRP reporting trigger for ICIC " (motion number: in motion R1-0801536), propose to report the signaling consumption that brings to be necessary to increase new triggering thresholding such as the name of submitting to 3GPP in March, 2008 in order to reduce RSRP.Simultaneously the name of submitting to 3GPP in March, 2008 is called " ICIC sub-district inside terminals and exterior terminal definition: Consideration onidentification of interior users/exterior users for ICIC " (motion number: in motion R1-081395), also proposed in order to reduce the signaling consumption that reporting of RSRP brought, triggered RSRP according to terminal suspending zone state and efficient signaling and report.
To report the signaling consumption that brings in order reducing to measure, suitable thresholding just need to be set to control cell edge and inside terminals.The name of submitting to 3GPP in October, 2007 is called " band/not with the Inter-Cell Interference Coordination scheme of business load indication: On Inter-cell InterferenceCoordination Schemes without/with Traffic Load Indication " (motion number: point out in motion R1-074444), can use handover measurement user position information is provided, know more customer position information for needs simultaneously, need to improve the triggering thresholding, but this method of using handover measurement, can make the periodic reporting measurement result of user, increase the expense of up signaling.The name of submitting to 3GPP in March, 2008 is called " the RSRP measurement triggering that ICIC is newly-increased: Additional RSRP reporting trigger for ICIC " (motion number: in motion R1-0801536), suggestion is 6dB with this threshold setting, allow more reporting of user measurement result, limit the signaling consumption that reports by increasing extra trigger mechanism simultaneously, but the quick variation of the terminal location metrical information that the quick variation of not considering the mobile channel environment causes, and " ping-pong " that cause.
In currently used appraisal procedure, the inventor finds to have following problem in the prior art at least: the process of judging Cell Edge User and internal user can produce " ping-pong ", increases overhead.
Summary of the invention
Consider the problems referred to above and make the present invention that for this reason, main purpose of the present invention is to provide the determination methods and the portable terminal of a kind of terminal area state.
The determination methods of a kind of terminal area state is provided according to an aspect of the present invention.
According to the determination methods of the terminal area state of the embodiment of the invention, said method comprises: terminal is obtained first thresholding and second thresholding, and wherein, first thresholding is less than second thresholding; Terminal initial is measured the signal power of this sub-district and adjacent sub-district, calculate the first derivation value according to its value, judge that whether the first derivation value is less than first thresholding, wherein, in judged result is under the situation that is, it is cell edge that terminal is provided with its zone state, reports corresponding zone state, and carries out first step; In judged result is that it is inside, sub-district that terminal is provided with its zone state, and carries out second step under the situation not; First step, terminal continues to measure the signal power of this sub-district and adjacent sub-district, calculates the second derivation value according to its value, judge that whether the second derivation value is greater than second thresholding, in judged result is under the situation that is, it is inside, sub-district that terminal is provided with its zone state, and carries out third step; In judged result is that terminal is carried out first step once more under the situation not through after a while; Second step, terminal continues to measure the signal power of this sub-district and adjacent sub-district, calculates the 3rd derivation value according to its value, judge that whether the 3rd derivation value is less than first thresholding, in judged result is under the situation that is, it is cell edge that terminal is provided with its zone state, and carries out third step; In judged result is that terminal is carried out second step once more under the situation not through after a while; Third step, the variation of its zone state of terminal to report if the zone state of terminal is a cell edge, is then carried out first step; If the zone state of terminal is inside, sub-district, then carry out second step.
Preferably, first, second, third above-mentioned derivation value is one of following numerical value: the maximum in the ratio between the adjacent cell signal power of this cell signal power and one group; Or the maximum in the difference between the adjacent cell signal power of this cell signal power and one group.
Preferably, terminal one of is at least obtained first thresholding and second thresholding in the following manner: terminal is obtained first thresholding and second thresholding of acquiescence; Terminal is obtained first thresholding and second thresholding from network side when access network; Behind the accessing terminal to network, network side dynamically issues first thresholding and second thresholding to terminal.
According to a further aspect in the invention, also provide a kind of portable terminal.
Portable terminal according to the embodiment of the invention comprises: measurement module is used to measure this cell signal power and one group of adjacent cell signal power; Computing module is used for according to this cell signal power and one group of a plurality of derivation value of adjacent cell signal power calculation; The region decision module is used for derivation value and first thresholding or second thresholding that obtain are compared, and judges according to temporary mobile terminal area state in the temporary module of zone state whether the zone state of portable terminal changes; Zone state is kept in module, is used for being provided with according to the judged result of region decision module the current region state of portable terminal.
Preferably, the region decision module further comprises: the prime area judge module, be connected to measurement module, and be used for the first derivation value and first thresholding of measurement module initial measurement are compared; The first area judge module is connected to the temporary module of measurement module and zone state, is used for the second derivation value and first thresholding of the follow-up measurement of measurement module are compared; The second area judge module is connected to the temporary module of measurement module and zone state, is used for the 3rd derivation value and second thresholding of the follow-up measurement of measurement module are compared.
Preferably, judge that at the prime area judge module it is cell edge that portable terminal is provided with its zone state, reports corresponding zone state under the situation of the first derivation value less than first thresholding, carry out the second area judge module; Judge that at the prime area judge module the first derivation value is not less than under the situation of first thresholding, carry out the first area judgement and touch piece.
Preferably, judge under the situation of the second derivation value less than second thresholding that the temporary module of zone state is not upgraded the zone state of portable terminal, and carries out the second area judge module once more at the second area judge module; Be not less than under the situation of second thresholding in the second derivation value, the temporary module of zone state is updated to inside, sub-district with the current region state of portable terminal, reports corresponding zone state, and carries out the first area judge module.
Preferably, judge under the situation of the 3rd derivation value greater than first thresholding that the temporary module of zone state is not upgraded the zone state of portable terminal, and carries out the first area judge module once more at the first area judge module; Be not more than under the situation of first thresholding in the 3rd derivation value, report corresponding zone state, the temporary module of zone state is updated to cell edge with the current region state of portable terminal, and carries out the second area judge module.
Preferably, above-mentioned portable terminal also comprises: acquisition module, be used for obtaining first thresholding and second thresholding from the base station, and wherein, acquisition module one of at least obtains first thresholding and second thresholding in the following manner: first thresholding and second thresholding that obtain acquiescence; Terminal is obtained first thresholding and second thresholding from network side when access network; Behind the accessing terminal to network, network side dynamically issues first thresholding and second thresholding to terminal.
Preferably, a plurality of derivation values of calculating of computing module are one of following numerical value: the maximum in the ratio between this cell signal power and one group of neighbour's cell signal power; Or the maximum in the difference between the adjacent cell signal power of this cell signal power and one group.
By technique scheme of the present invention, network can obtain the zone state information of terminal with less reported data amount, thereby reduces the power consumption of terminal, and " ping-pong " of avoiding terminal may occur in state exchange.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Method embodiment
As shown in Figure 1, the embodiment of the invention proposes the determination methods of a kind of terminal area state, comprises following processing:
Step S102, terminal is obtained first thresholding (TH1) and second thresholding (TH2), and wherein, first thresholding is less than second thresholding;
Step S104, terminal initial is measured the signal power of this sub-district and adjacent sub-district, calculate the first derivation value according to its value, judge that whether the first derivation value is less than first thresholding, wherein, be under the situation that is in judged result, it is cell edge that terminal is provided with its zone state, report corresponding zone state, and carry out first step; In judged result is that it is inside, sub-district that terminal is provided with its zone state, and carries out second step under the situation not;
Step S106, first step, terminal continues to measure the signal power of this sub-district and adjacent sub-district, calculating the second derivation value according to its value, whether judge the second derivation value greater than second thresholding, is under the situation that is in judged result, it is inside, sub-district that terminal is provided with its zone state, and carries out third step; In judged result is that terminal is carried out first step once more under the situation not through after a while;
Step S108, second step, terminal continues to measure the signal power of this sub-district and adjacent sub-district, calculating the 3rd derivation value according to its value, whether judge the 3rd derivation value less than first thresholding, is under the situation that is in judged result, it is cell edge that terminal is provided with its zone state, and carries out third step; In judged result is that terminal is carried out second step once more under the situation not through after a while;
Step S110, third step, the variation of its zone state of terminal to report if the zone state of terminal is a cell edge, is then carried out first step; If the zone state of terminal is inside, sub-district, then carry out second step.
The first derivation value of aforementioned calculation, the second derivation value, the 3rd derivation value are: the maximum in the ratio between the adjacent cell signal power of this cell signal power and one group; Or the maximum in the difference between the adjacent cell signal power of this cell signal power and one group.
First thresholding that terminal is obtained and second thresholding, can obtain by following a kind of mode: terminal is obtained first thresholding and second thresholding of acquiescence; Terminal is obtained first thresholding and second thresholding from network side when access network; Behind the accessing terminal to network, network side dynamically issues first thresholding and second thresholding to terminal.
By above preferred embodiment, terminal can be with the zone state information of less reported data amount to the network reporting terminal, thereby reduce the power consumption of terminal, and " ping-pong " of avoiding terminal may occur in state exchange.
As shown in Figure 2, network side is that terminal preestablishes TH1 and TH2, and wherein, first thresholding is less than second thresholding, and two threshold values send to cell terminal by broadcasting or other modes;
Terminal carries out calculating the first derivation value on this initial sub-district and the adjacent cell signal based measurement in the interval between D point and the E point in Fig. 2, and judge that whether the first derivation value is less than TH1, judged result is for being, then described terminal determines to lay oneself open to cell edge region, report corresponding zone state, the location status of oneself is set to cell edge, and carries out first step;
First step, described terminal carries out calculating the second derivation value on this sub-district and the adjacent cell signal based measurement in the interval between E point and the F point in Fig. 2, the second derivation value and TH2 are compared, comparative result is to be not more than TH2, then terminal is carried out first step once more after after a while;
After carrying out first step once more, described terminal carries out calculating the 3rd derivation value on this sub-district and the adjacent cell signal based measurement in the interval between d point and the e point in Fig. 3, the 3rd derivation value and the described second thresholding TH2 are compared, comparative result is to be not less than TH2, and then terminal enters third step;
Third step, terminal reports the variation of its zone state to network,, terminal is reported network from this variation that the cell edge region state transfers cell inner area to that is, so that network is in the resource that the terminal of cell inner area is used for its configuration.
This above-mentioned sub-district and adjacent cell signal measuring amount are the RSRP (Reference Symbol Received Power) that is used to switch.
Preferably, above-mentioned derivation value is the maximum in the ratio between this cell signal power and one group of adjacent cell signal power;
Preferably, terminal periodic ground measuring-signal or trigger-type measuring-signal, wherein, the trigger condition of trigger-type measuring-signal be following one of at least or its combination: the frequency spectrum resource of cell inner area and interior zone reconfigure the attribute of buffer state, rational delegation of power and terminal.
Device embodiment
According to a further aspect in the invention, also provide a kind of portable terminal.
As shown in Figure 4, the portable terminal according to the embodiment of the invention comprises: measurement module 10 is used to measure this cell signal power and one group of adjacent cell signal power; Computing module 20 is used for according to this cell signal power and one group of a plurality of derivation value of adjacent cell signal power calculation; Region decision module 30 is used for derivation value and first thresholding or second thresholding that obtain are compared, and judges according to temporary mobile terminal area state in the temporary module of zone state whether the zone state of portable terminal changes; Zone state is kept in module 40, is used for being provided with according to the judged result of region decision module the current region state of portable terminal.
Wherein, region decision module 30 further comprises: prime area judge module (not shown), be connected to measurement module, and be used for the first derivation value and first thresholding of measurement module initial measurement are compared; First area judge module (not shown) is connected to the temporary module of measurement module and zone state, is used for the second derivation value and first thresholding of the follow-up measurement of measurement module are compared; Second area judge module (not shown) is connected to the temporary module of measurement module and zone state, is used for the 3rd derivation value and second thresholding of the follow-up measurement of measurement module are compared.
And, judge that at the prime area judge module it is cell edge that portable terminal is provided with its zone state, reports corresponding zone state under the situation of the first derivation value less than first thresholding, carry out the second area judge module; Judge that at the prime area judge module the first derivation value is not less than under the situation of first thresholding, carry out the first area judgement and touch piece.
Wherein, judge under the situation of the second derivation value less than second thresholding that the temporary module of zone state is not upgraded the zone state of portable terminal, and carries out the second area judge module once more at the second area judge module; Be not less than under the situation of second thresholding in the second derivation value, the temporary module of zone state is updated to inside, sub-district with the current region state of portable terminal, reports corresponding zone state, and carries out the first area judge module.
Based on above-mentioned processing, judge under the situation of the 3rd derivation value greater than first thresholding that at the first area judge module the temporary module of zone state is not upgraded the zone state of portable terminal, and carries out the first area judge module once more; Be not more than under the situation of first thresholding in the 3rd derivation value, report corresponding zone state, the temporary module of zone state is updated to cell edge with the current region state of portable terminal, and carries out the second area judge module.
Preferably, above-mentioned portable terminal also comprises: the acquisition module (not shown), it is connected to region decision module 30, be used for obtaining first thresholding and second thresholding from the base station, wherein, acquisition module one of at least obtains first thresholding and second thresholding in the following manner: first thresholding and second thresholding that obtain acquiescence; Terminal is obtained first thresholding and second thresholding from network side when access network; Behind the accessing terminal to network, network side dynamically issues first thresholding and second thresholding to terminal.
Wherein, a plurality of derivation values of calculating of computing module are one of following numerical value: the maximum in the ratio between this cell signal power and one group of neighbour's cell signal power; Or the maximum in the difference between the adjacent cell signal power of this cell signal power and one group.
By technique scheme of the present invention, terminal can be with the zone state information of less reported data amount to the network reporting terminal, thereby reduce the power consumption of terminal, and " ping-pong " of avoiding terminal may occur in state exchange.
Obviously, those skilled in the art should be understood that, above-mentioned each modular unit of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.