CN101394671B - Method, device and system for selecting access carrier for access terminal - Google Patents
Method, device and system for selecting access carrier for access terminal Download PDFInfo
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- CN101394671B CN101394671B CN 200810201383 CN200810201383A CN101394671B CN 101394671 B CN101394671 B CN 101394671B CN 200810201383 CN200810201383 CN 200810201383 CN 200810201383 A CN200810201383 A CN 200810201383A CN 101394671 B CN101394671 B CN 101394671B
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Abstract
The invention provides a method for selecting carrier frequencies for an access terminal, which comprises the following steps: judging whether the reverse interference of all the carrier frequencies exceed the judgment threshold for the reverse interference; selecting the carrier frequency with the minimum reverse interference as the access carrier frequency of the access terminal if the reverse interference of all the carrier frequencies exceed the judgment threshold for the reverse interference; and selecting the carrier frequency with the reverse interference being less than or equal to the judgment threshold for the reverse interference as the access carrier frequency of the access terminal. When the access terminal accesses a radio communication network, the system side adopts the technical proposal to select a carrier frequency for the access terminal; by selecting a carrier frequency with relatively small reserve interference, the access terminal operating on the carrier frequency with a good radio environment greatly improves the service experience, and meanwhile makes reasonable use of the carrier frequency resource of the radio communication network, thereby fully utilizing idle carrier frequencies.
Description
Technical field
The present invention relates to network communications technology field, particularly a kind of method, equipment and system of selecting access carrier for accessing terminal.
Background technology
Increasingly mature along with the cordless communication network technology, a lot of operators adopt the mode of multi-carrier networking to adapt to the continuous growth of telephone traffic.
Because there is the frequency selectivity interference problem in cordless communication network, the reverse interference of some carrier frequency is much larger than the other carrier frequency in the multi-carrier networking.Access terminal (AT, Access Terminal) use professional impression relatively poor at the reverse interference carrier frequency.
Summary of the invention
The embodiment of the invention provides a kind of method, equipment and system of selecting access carrier for accessing terminal, takes full advantage of the Internet resources of multi-carrier networking, improves AT user and uses professional impression.
The embodiment of the invention provides a kind of method of selecting access carrier for accessing terminal, comprising:
Judge that whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold; If the reverse interference of all carrier frequency all above the reverse interference decision threshold, selects the carrier frequency of reverse interference minimum as the access carrier that accesses terminal; If the reverse interference of all carrier frequency not all above the reverse interference decision threshold, selects reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier that accesses terminal.
The embodiment of the invention also provides a kind of equipment of selecting access carrier for accessing terminal, comprising:
The first judging unit is used for judging that whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold; Selected cell, when being used for reverse interference when described first all carrier frequency of judgment unit judges all above the reverse interference decision threshold, the access carrier that the carrier frequency conduct of selection reverse interference minimum accesses terminal; Otherwise then select reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier that accesses terminal.
The embodiment of the invention also provides a kind of system of selecting access carrier for accessing terminal, and described system side comprises base station and base station controller.Described base station, be used for obtaining main collection received signal strength indicator and the indication of diversity reception signal strength signal intensity, or the lifting of making an uproar at the bottom of lifting and the diversity of making an uproar of the main collection end, be used for the described main collection received signal strength indicator of periodic report and the indication of diversity reception signal strength signal intensity, the main collection end make an uproar make an uproar lifting at the bottom of lifting and the diversity or merge described main collection received signal strength indicator and the indication of diversity reception signal strength signal intensity to described base station controller.
Described base station controller, whether the reverse interference that is used for judging carrier frequency according to any one or its combination of following information is all above the reverse interference decision threshold: described main collection received signal strength indicator and the indication of diversity reception signal strength signal intensity, describedly mainly collect make an uproar make an uproar at the bottom of lifting and diversity lifting or the main collection received signal strength indicator of described merging and diversity reception signal strength signal intensity of the end and indicate.
To sum up, when accessing terminal the access to wireless communication network, it is the described selection access carrier that accesses terminal that system side adopts above technical scheme, select the less carrier frequency of reverse interference, access terminal and use professional experiencing greatly to improve at the good carrier frequency of wireless environment, also rationally utilized simultaneously the carrier frequency resource of cordless communication network, idle carrier frequency is fully used.
Description of drawings
Fig. 1 is based on the inventive method the first embodiment flow chart;
Fig. 2 is based on the embodiment of the invention and calculates the method flow diagram that merges RSSI;
Fig. 3 is based on the inventive method the second embodiment flow chart;
Fig. 4 is based on the inventive method the 3rd embodiment flow chart;
Fig. 5 is based on the inventive method the 4th embodiment flow chart;
Fig. 6 is based on present device the first embodiment schematic diagram;
Fig. 7 is based on present device the second embodiment schematic diagram;
Fig. 8 is based on the first example structure figure of system of the present invention;
Fig. 9 is based on the second example structure figure of system of the present invention.
Embodiment
At first the embodiment of the invention is realized that a kind of method for the selection access carrier that accesses terminal describes, and comprising:
Judge that whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold; If the reverse interference of all carrier frequency all above the reverse interference decision threshold, selects the carrier frequency of reverse interference minimum as the access carrier that accesses terminal; If the reverse interference of all carrier frequency not all above the reverse interference decision threshold, selects reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier that accesses terminal.
Below in conjunction with accompanying drawing, embodiments of the present invention is described in detail.
Embodiment of the method one:
Referring to Fig. 1, based on the inventive method the first embodiment flow chart.
S101: judge that whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold.
The reverse interference of described all carrier frequency of judgement can be by main collection received signal strength indicator (RSSI, Received Signal Strength Indicator) and diversity RSSI, lifting (ROT, RiseOver Thermal) and diversity ROT make an uproar at the main collection end, or, merge RSSI and judge.
Need to prove, the reverse interference of the carrier frequency that has in the system can be judged by main collection RSSI and diversity RSSI.The reverse interference of some carrier frequency can be judged by main collection ROT and diversity ROT.The reverse interference of some carrier frequency can be judged by described merging RSSI.Certainly, the reverse interference of all carrier frequency also can be judged by the same index in the system, for example, and all by merging RSSI.
S102: if the reverse interference of all carrier frequency all above the reverse interference decision threshold, is carried out S103.
S103: select the carrier frequency of reverse interference minimum as the access carrier of AT.
When the reverse interference of all carrier frequency during all above the reverse interference decision threshold, the reverse interference carrier frequency is saved, preferentially select the carrier frequency of reverse interference minimum as the access carrier of AT.
The system of selection of the carrier frequency of reverse interference minimum has three kinds, is specially:
The first: no matter when judging the reverse interference of carrier frequency by main collection RSSI and diversity RSSI, select the minimum carrier frequency of RSSI value as the access carrier of AT, be main collection RSSI or diversity RSSI.The second: no matter when judging the reverse interference of carrier frequency by main collection ROT and diversity ROT, select the minimum carrier frequency of ROT value as the access carrier of AT, be main collection ROT or diversity ROT.The third: when judging the reverse interference of carrier frequency by merging RSSI, select to merge the minimum carrier frequency of RSSI value as the access carrier of AT.
S104: if the reverse interference of all carrier frequency not all above the reverse interference decision threshold, is carried out S105.
S105: select reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier of AT.
When existing reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold in the cordless communication network, preferentially select reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier of AT.
Need to prove, when existing a plurality of reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold in the cordless communication network, can select the method for carrier frequency to select in conjunction with other.For example, select the minimum reverse interference of load to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier of AT.Can also select reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier of AT according to predefined priority.
A kind of method the first embodiment that selects access carrier for AT of the present invention, whether the reverse interference of judging all carrier frequency surpasses the reverse interference decision threshold, if the reverse interference of all carrier frequency is all above the reverse interference decision threshold, select the carrier frequency of reverse interference minimum as the access carrier of AT, if the reverse interference of all carrier frequency not all above the reverse interference decision threshold, selects reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier of AT.The described method of the embodiment of the invention is when AT access to wireless communication network, for described AT selects access carrier.By judging the reverse interference of carrier frequency, AT is assigned on the carrier frequency without reverse interference or reverse interference minimum.AT can use business in the wireless communication network environments preferably like this, has greatly improved and has used impression, has also rationally utilized network resources for wireless communication simultaneously, and idle carrier frequency is fully used.
The below introduces the implementation method of described S101 in detail, has three kinds.
The first: judge that by main collection RSSI and diversity RSSI whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold.
If main collection RSSI greater than the number of the higher thresholding of RSSI and diversity RSSI greater than individual number average of the higher thresholding of RSSI above the reverse interference decision threshold, for example, this reverse interference decision threshold is set to number, then this carrier frequency is the reverse interference carrier frequency.
Need to prove, the number of the higher thresholding of described RSSI and described reverse interference decision threshold can arrange according to concrete system and the environment used.
The second: judge that by main collection ROT and diversity ROT whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold.
If main collection ROT greater than the number of the higher thresholding of ROT and diversity ROT greater than individual number average of the higher thresholding of ROT above the reverse interference decision threshold, for example, this reverse interference decision threshold is set to number, then this carrier frequency is the reverse interference carrier frequency.
Need to prove, described main collection ROT and diversity ROT can directly obtain from chip, also can obtain by described main collection RSSI and diversity RSSI, for example, obtain the minimum value of main collection RSSI and diversity RSSI in nearly 24 hours, are designated as main collection RSSI
Minimum valueWith diversity RSSI
Minimum value
The current time master collects RSSI and diversity RSSI deducts respectively described main collection RSSI
Minimum valueWith diversity RSSI
Minimum valueObtain respectively main collection ROT and diversity ROT.
The third: judge that by merging RSSI whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold.
If described merging RSSI surpasses the reverse interference decision threshold greater than the number of the higher thresholding of RSSI, for example, this reverse interference decision threshold is set to number, and then this carrier frequency is the reverse interference carrier frequency.
Need to prove, the reverse interference of the carrier frequency that has in the system can be judged by main collection RSSI and diversity RSSI.The reverse interference of some carrier frequency can be judged by main collection ROT and diversity ROT.The reverse interference of some carrier frequency can be judged by described merging RSSI.Certainly, the reverse interference of all carrier frequency also can be judged by the same index in the system, for example, and all by merging RSSI.Whether surpass the reverse interference decision threshold by the reverse interference of judging each carrier frequency, judge that whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold, and the reverse interference of judging each carrier frequency whether to surpass the method for reverse interference decision threshold can be in above-mentioned three kinds of methods any one, whether the reverse interference of then judging all carrier frequency all is any one or its combination of above-mentioned three kinds of methods above the method for reverse interference decision threshold.
The below introduces the computational methods of described merging RSSI.
Referring to Fig. 2, calculate the method flow diagram that merges RSSI based on the embodiment of the invention.
If a certain carrier frequency main collection RSSI and diversity RSSI at a time is respectively: RSSI
MainAnd RSSI
Div, unit is dBm; If described merging RSSI is: RSSI
Combine
S201: calculate the difference of described main collection RSSI and diversity RSSI, be made as X, then
X＝RSSI
main-RSSI
div。
Need to prove, X has positive and negative dividing.
S202: the contribution of calculating main collection and minute set pair system receiving ability.
If the contribution of main set pair system receiving ability is M.
Then
If the contribution of minute set pair system receiving ability is D.
Then
S203: calculate the receiving ability that merges RSSI, i.e. the comprehensive receiving ability of system.
RSSI
combine＝RSSI
main+M＝RSSI
div+D
Embodiment of the method two:
Referring to Fig. 3, based on the inventive method the second embodiment flow chart.
Embodiment of the method two is situations that all carrier frequency of cordless communication network kind are the reverse interference carrier frequency.S301: whether judge the reverse interference of all carrier frequency all above the reverse interference decision threshold, if so, carry out S302.
Need to prove, all whether the method above the reverse interference decision threshold is identical with the described method of S101 in the embodiment of the method one to judge reverse interference, does not repeat them here.
S302: select the carrier frequency of reverse interference minimum as the access carrier of AT.
S303: whether the load of judging the carrier frequency of selected reverse interference minimum surpasses the access thresholding, if so, then carries out S304; If not, then carry out S305.
S304: select the carrier frequency of reverse interference minimum in the remaining carrier frequency as the access carrier of AT.
Need to prove after S304, will judge also whether the load of the carrier frequency of reverse interference minimum in the remaining carrier frequency surpasses the access thresholding, if not, then select this carrier frequency as the access carrier of AT; If so, from remaining carrier frequency, select the carrier frequency of reverse interference minimum, perhaps, can reject this carrier frequency, from remaining carrier frequency, select the carrier frequency of reverse interference minimum, the like, the carrier frequency of a reverse interference minimum of every selection will judge all whether its load surpasses the access thresholding.
S305: select this carrier frequency as the access carrier of AT.
Need explanation to be, the described method of the present embodiment is that AT selects the principle of access carrier to be, selects to disturb minimum carrier frequency as the access carrier of AT, but will judge that whether the load of selected carrier frequency has surpassed the access thresholding, if not, then selects this carrier frequency; If so, then from cordless communication network, reject this carrier frequency, from remaining carrier frequency, select the carrier frequency of reverse interference minimum as the access carrier of AT, choose the carrier frequency of the reverse interference minimum that can access always.
Need to prove, if meeting of all carrier frequency all surpassed the access thresholding in the system, then loop cycle continues to select according to the described method of above-described embodiment, until choose suitable carrier frequency.
Embodiment of the method three:
Referring to Fig. 4, based on the inventive method the 3rd embodiment flow chart.
Embodiment of the method three is that the cordless communication network kind exists reverse interference to be less than or equal to the situation of the carrier frequency of described reverse interference decision threshold.
S401: whether judge the reverse interference of all carrier frequency all above the reverse interference decision threshold, if not, carry out S402.
Need to prove, all whether the method above the reverse interference decision threshold is identical with the described method of S101 in the embodiment of the method one to judge reverse interference, does not repeat them here.
S402: select reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier of AT.
S403: judge that whether reverse interference is less than or equal to the load of carrier frequency of described reverse interference decision threshold all above the access thresholding; If so, then carry out S404; If not, then select reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier of AT.
Need to prove, when existing a plurality of reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold in the cordless communication network, can select the method for carrier frequency to select in conjunction with other.For example, select the minimum reverse interference of load to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier of AT.Can also select without the carrier frequency of the reverse interference minimum access carrier as AT according to predefined priority.
S404: select the carrier frequency of reverse interference minimum in the reverse interference carrier frequency as the access carrier of AT.
S405 and S406 are identical with S303 and S304 in the embodiment of the method two, do not repeat them here.
Need to prove, embodiment of the present invention when existing reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold in the cordless communication network, preferentially selects this reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold.The load of carrier frequency that is less than or equal to described reverse interference decision threshold when all reverse interference selects to disturb the carrier frequency of reverse interference minimum in the carrier frequency as the access carrier of AT during all above the access thresholding.
The below illustrates the method for the invention embodiment four as an example of two carrier networkings example.
Embodiment of the method four:
Referring to Fig. 5, based on the inventive method the 4th embodiment flow chart.
S501:AT sends to connect and sets up solicited message (Connection Request).
S502: Access Network (AN, Access Network) sends traffic channel assignment message (TrafficChannel Assignment) to described AT.
Need to prove, represent respectively the carrier frequency of described two carrier network with F1 and F2.If F2 is the reverse interference carrier frequency, F1 is the carrier frequency that reverse interference is less than or equal to described reverse interference decision threshold.AT accesses from F2, because there is reverse interference in F2, so AN assignment AT is to the F1 carrier frequency.When if AT accesses from F2, the load of F1 has surpassed the access thresholding, and then AN assignment AT carries out business to F2.
S503: described AT sends traffic channel assignments and finishes message (Traffic Channel Complete) to described AN.
Need to prove, above each embodiment of the method for the present invention is applicable to cordless communication network, comprise code division multiple access (CDMA, Code Division Muti Access), global system for mobile communications (GSM, Global System for Mobile communications), General Packet Radio Service System (GPRS, General Packet Radio Service System), universal mobile telecommunications system (UMTS, UniversalMobile Telecommunications System), WLAN (wireless local area network) (WLAN, Wireless Local AreaNetwork) and worldwide interoperability for microwave access (WiMAX, Worldwide Interoperability forMicrowave Access) and based on their some evolution technology etc.
The embodiment of the invention provides a kind of equipment of selecting access carrier for accessing terminal.
Apparatus embodiments one:
Referring to Fig. 6, based on present device the first embodiment schematic diagram.
Apparatus embodiments of the present invention comprises the first judging unit 601, selected cell 602.
Described the first judging unit 601 is used for judging that whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold.
Described the first judging unit 601 judges that the reverse interference of all carrier frequency can be by main collection RSSI and diversity RSSI, main collection ROT and diversity ROT, or, merge RSSI and judge.The below is described in detail respectively above-mentioned three kinds of methods of judging the reverse interference of carrier frequency.
The first: judge that by main collection RSSI and diversity RSSI whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold.
If greater than individual number average of the higher thresholding of the RSSI number above the reverse interference decision threshold, then this carrier frequency is the reverse interference carrier frequency to main collection RSSI greater than the number of the higher thresholding of RSSI and diversity RSSI.
The second: judge that by main collection ROT and diversity ROT whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold.
If greater than individual number average of the higher thresholding of the ROT number above the reverse interference decision threshold, then this carrier frequency is the reverse interference carrier frequency to main collection ROT greater than the number of the higher thresholding of ROT and diversity ROT.
Need to prove, described main collection ROT and diversity ROT can directly obtain from chip, also can obtain by described main collection RSSI and diversity RSSI, for example, obtain the minimum value of main collection RSSI and diversity RSSI in nearly 24 hours, are designated as main collection RSSI
Minimum valueWith diversity RSSI
Minimum value
The current time master collects RSSI and diversity RSSI deducts respectively described main collection RSSI
Minimum valueWith diversity RSSI
Minimum valueObtain respectively main collection ROT and diversity ROT.
The third: judge that by merging RSSI whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold.
If described merging RSSI surpasses the number of reverse interference decision threshold greater than the number of the higher thresholding of RSSI, then this carrier frequency is the reverse interference carrier frequency.
Need to prove, the number of the higher thresholding of described RSSI and reverse interference decision threshold can arrange according to concrete system and the environment used.
Need to prove, the reverse interference of the carrier frequency that has in the system can be judged by main collection RSSI and diversity RSSI.The reverse interference of some carrier frequency can be judged by main collection ROT and diversity ROT.The reverse interference of some carrier frequency can be judged by described merging RSSI.Certainly, the reverse interference of all carrier frequency also can be judged by the same index in the system, for example, and all by merging RSSI.Whether surpass the reverse interference decision threshold by the reverse interference of judging each carrier frequency, judge that whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold, and the reverse interference of judging each carrier frequency whether to surpass the method for reverse interference decision threshold can be in above-mentioned three kinds of methods any one, whether the reverse interference of then judging all carrier frequency all is any one or its combination of above-mentioned three kinds of methods above the method for reverse interference decision threshold.
Described selected cell 602, when being used for reverse interference when described first all carrier frequency of judgment unit judges all above the reverse interference decision threshold, the carrier frequency of selection reverse interference minimum is as the access carrier of AT; Otherwise, then select reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier of AT.
Apparatus embodiments two:
Referring to Fig. 7, based on present device the second embodiment schematic diagram.
Apparatus embodiments two is to have increased the second judging unit 701, the first assignment unit 702, the 3rd judging unit 703 and the second assignment unit 704 with the difference of apparatus embodiments one.
Described the second judging unit 701 is connected with described selected cell 602, whether the load for the carrier frequency of judging described reverse interference minimum surpasses the access thresholding, if, the the first assignment unit 702 that then is connected with described the second judging unit 701 is on the carrier frequency of the described AT of assignment reverse interference minimum in the remaining carrier frequency.
Described the 3rd judging unit 703 is connected with described selected cell 602, be used for judging that whether described reverse interference is less than or equal to the load of carrier frequency of described reverse interference decision threshold all above the access thresholding, if, the the second assignment unit 704 that then is connected with described the 3rd judging unit 703, the described AT of assignment is to the carrier frequency of reverse interference minimum.
The described equipment of the embodiment of the invention be described AT select the minimum or non-return interference of reverse interference carrier frequency as access carrier, guaranteed that AT uses the impression of cordless communication network.The described equipment of the embodiment of the invention also takes full advantage of network resources for wireless communication in addition, and the carrier frequency that makes the little or reverse interference of the little while reverse interference of load be less than or equal to described reverse interference decision threshold is rationally utilized.
Need to prove, equipment the first embodiment of the present invention and the second embodiment are applicable to cordless communication network, comprise CDMA, GSM, GPRS, UMTS, WLAN and WiMAX and based on their some evolution technology etc.
The present invention also provides a kind of system of selecting access carrier for accessing terminal.
System embodiment one:
Referring to Fig. 8, based on the first example structure figure of system of the present invention.
The described system of the embodiment of the invention comprises and accesses terminal 801 and system side 802.
Described accessing terminal 801 can be the cellphone subscriber.
Described system side 802 is used for judging that whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold; If so, the carrier frequency of then selecting the reverse interference minimum is as described 801 the access carrier of accessing terminal; If not, then select carrier frequency that reverse interference is less than or equal to described reverse interference decision threshold as described 801 the access carrier of accessing terminal.
Described system side 802 can be by main collection RSSI and the diversity RSSI of carrier frequency, main collection ROT and diversity ROT, or, merge the reverse interference that RSSI judges carrier frequency.
Need to prove, the described system of the embodiment of the invention is applicable to cordless communication network, comprises CDMA, GSM, GPRS, UMTS, WLAN and WiMAX and based on their some evolution technology etc.
A kind of the first embodiment of system that selects access carrier for AT of the present invention, system side 802 judges whether the reverse interference of all carrier frequency surpasses the reverse interference decision threshold, if, select the carrier frequency of reverse interference minimum as the access carrier of AT, if not, select reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier of AT.The described system of the embodiment of the invention is when described AT801 access to wireless communication network, for described AT801 selects access carrier.By judging the reverse interference of carrier frequency, AT is assigned on the carrier frequency of non-return interference or reverse interference minimum.AT801 can use business in the wireless communication network environments preferably like this, has greatly improved and has used impression, has also rationally utilized network resources for wireless communication simultaneously, and idle carrier frequency is fully used.
System embodiment two:
Referring to Fig. 9, based on the second example structure figure of system of the present invention.
The below introduces the composition of the described embodiment system side 802 of system of the present invention in detail.
Described system side 802 comprises base station 802a (BTS, Base Transceiver System) and base station controller 802b (BSC, Base Station Controller).
Described BTS802a is used for obtaining the master and collects RSSI, diversity RSSI, main collection ROT, diversity ROT and merge RSSI, and the described master of periodic report collects RSSI, diversity RSSI, main collection ROT, diversity ROT and merges extremely described BSC802b of RSSI.
Described BTS802a measures described main collection RSSI and diversity RSSI.
Need to prove, what the channel board of described BTS802a had can directly measure described main collection ROT and diversity ROT, and some channel boards calculate main collection ROT and diversity ROT by main collection RSSI and diversity RSSI.
For example, described BTS802a obtains the minimum value of leading collection RSSI and diversity RSSI in nearly 24 hours, is designated as main collection RSSI
Minimum valueWith diversity RSSI
Minimum value
The current time master collects RSSI and diversity RSSI deducts respectively described main collection RSSI
Minimum valueWith diversity RSSI
Minimum valueObtain respectively main collection ROT and diversity ROT, described BTS802a with described main collection RSSI and diversity RSSI and main collection ROT and diversity ROT periodic report to described BSC802b.
The formula that obtains of described main collection ROT and diversity ROT is:
ROT=RSSI-RSSI
Minimum value
Described BSC802b is used for according to described main collection RSSI and diversity RSSI, main collection ROT and diversity ROT, or, merge RSSI, judge that whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold.
How the below introduces respectively BSC802b by described main collection RSSI and diversity RSSI, main collection ROT and diversity ROT, or, merge RSSI, judge that whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold.
The first: BSC802b judges that by main collection RSSI and diversity RSSI whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold.
If described main collection RSSI greater than the number of the higher thresholding of RSSI and diversity RSSI greater than individual number average of the higher thresholding of RSSI above the reverse interference decision threshold, then BSC802b judges that this carrier frequency is the reverse interference carrier frequency.
The second: BSC802b judges that by main collection ROT and diversity ROT whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold.
If described main collection ROT greater than the number of the higher thresholding of ROT and diversity ROT greater than individual number average of the higher thresholding of ROT above the reverse interference decision threshold, then BSC802b judges that this carrier frequency is the reverse interference carrier frequency.
The third: BSC802b judges that by merging RSSI whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold.
If described merging RSSI surpasses the reverse interference decision threshold greater than the number of the higher thresholding of RSSI, then BSC802b judges that this carrier frequency is the reverse interference carrier frequency.
Described BSC802b judges that whether the reverse interference of all carrier frequency surpasses the reverse interference decision threshold, if so, illustrates that then all carrier frequency all are reverse interference carrier frequency.BSC802b is that AT selects the carrier frequency of reverse interference minimum as access carrier.When existing reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold in the cordless communication network, BSC802b is that AT selects reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as accessing terminal.
Need to prove, the reverse interference of the carrier frequency that has in the system can be judged by main collection RSSI and diversity RSSI.The reverse interference of some carrier frequency can be judged by main collection ROT and diversity ROT.The reverse interference of some carrier frequency can be judged by described merging RSSI.Certainly, the reverse interference of all carrier frequency also can be judged by the same index in the system, for example, and all by merging RSSI.Whether surpass the reverse interference decision threshold by the reverse interference of judging each carrier frequency, judge that whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold, and the reverse interference of judging each carrier frequency whether to surpass the method for reverse interference decision threshold can be in above-mentioned three kinds of methods any one, whether the reverse interference of then judging all carrier frequency all is any one or its combination of above-mentioned three kinds of methods above the method for reverse interference decision threshold.
Need to prove, no matter select carrier frequency or the reverse interference of reverse interference minimum to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier of AT, whether the load that all will judge selecteed carrier frequency surpasses the access thresholding, if so, reverse interference minimum or reverse interference are less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier of AT in the carrier frequency of then selecting to be left.Be that selected access carrier all will considered aspect load and the reverse interference two.The carrier frequency of the little or non-return interference of reverse interference had both been selected by system of the present invention like this for AT, make again that the little carrier frequency resource of load is fully used in the cordless communication network.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the said method execution mode is to come the relevant hardware of instruction to finish by program, described program can be stored in the computer read/write memory medium, this program can comprise the content of aforesaid each execution mode of communication means when carrying out.Here alleged storage medium, as: ROM/RAM, magnetic disc, CD etc.
In sum, the method of a kind of enabling access points to access mobile core network that the embodiment of the invention provides, when accessing terminal the access to wireless communication network, system side is the described selection access carrier that accesses terminal, whether the reverse interference of at first judging all carrier frequency surpasses the reverse interference decision threshold, if so, select the carrier frequency of reverse interference minimum.If not, the carrier frequency that exists reverse interference to be less than or equal to described reverse interference decision threshold in the cordless communication network is described, then selects reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier that accesses terminal.Access terminal like this and can be assigned to wireless environment preferably on the carrier frequency, preferred reverse interference is less than or equal to the carrier frequency of described reverse interference decision threshold, when not existing reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold, select the carrier frequency of reverse interference minimum.Access terminal and use professional experiencing greatly to improve at the good carrier frequency of wireless environment, also rationally utilized the carrier frequency resource of cordless communication network simultaneously, idle carrier frequency is fully used.
One of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method is to come the relevant hardware of instruction to finish by program, described program can be stored in the computer read/write memory medium, this program comprises the steps: when carrying out
Judge that whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold; If the reverse interference of all carrier frequency all above the reverse interference decision threshold, selects the carrier frequency of reverse interference minimum as the access carrier that accesses terminal; If the reverse interference of all carrier frequency not all above the reverse interference decision threshold, selects reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier that accesses terminal.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing module, also can be that the independent physics of unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of embodiment of the invention technical scheme.
Claims (8)
1. a method of selecting access carrier for accessing terminal is characterized in that, comprising:
Judge that whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold;
If the reverse interference of all carrier frequency all above the reverse interference decision threshold, selects the carrier frequency of reverse interference minimum as the access carrier that accesses terminal;
If the reverse interference of all carrier frequency is not all above the reverse interference decision threshold, select reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier that accesses terminal, when existing a plurality of reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold in the cordless communication network, select the minimum reverse interference of load to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier that accesses terminal, or, select reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier that accesses terminal according to predefined priority;
The carrier frequency of described selection reverse interference minimum is as also comprising after the access carrier that accesses terminal, if the load of the carrier frequency of described reverse interference minimum surpasses the access thresholding, reject the carrier frequency of described reverse interference minimum, on the carrier frequency of assigned user reverse interference minimum in the remaining carrier frequency.
2. method according to claim 1, it is characterized in that, described selection reverse interference is less than or equal to the carrier frequency of described reverse interference decision threshold as also comprising after the access carrier that accesses terminal, if described reverse interference is less than or equal to the load of carrier frequency of described reverse interference decision threshold all above the access thresholding, assigned user is to the carrier frequency of reverse interference minimum.
3. method according to claim 1, it is characterized in that, describedly judge whether the reverse interference of all carrier frequency all comprises above the reverse interference decision threshold: adopt to merge received signal strength indicator and judges, specifically comprise: judge whether merge received signal strength indicator surpasses the reverse interference decision threshold greater than the number of the higher thresholding of received signal strength indicator.
4. method according to claim 1, it is characterized in that, describedly judge whether the reverse interference of all carrier frequency all comprises above the reverse interference decision threshold: adopt main collection received signal strength indicator and diversity reception signal strength signal intensity to indicate to judge, specifically comprise: judge described main collection received signal strength indicator greater than the number of the higher thresholding of received signal strength indicator and the indication of diversity reception signal strength signal intensity greater than the individual number average of the higher thresholding of received signal strength indicator whether above the reverse interference decision threshold.
5. method according to claim 1, it is characterized in that, describedly judge whether the reverse interference of all carrier frequency all comprises above the reverse interference decision threshold: adopt the main collection end to make an uproar to make an uproar at the bottom of lifting and the diversity lifting to judge, specifically comprise: judge describedly mainly to collect the end lifting of making an uproar and whether make an uproar the number of the higher thresholding of lifting all above the reverse interference decision threshold greater than the make an uproar lifting of making an uproar at the bottom of the number of the higher thresholding of lifting and the diversity of the end end of greater than.
6. method according to claim 5 is characterized in that, the lifting of making an uproar of the described main collection end collects received signal strength indicator by the current time master and deducts main collection received signal strength indicator minimum value and obtain; The lifting of making an uproar at the bottom of the described diversity deducts diversity reception signal strength signal intensity indication minimum value by the indication of current time diversity reception signal strength signal intensity and obtains.
7. method according to claim 1, it is characterized in that, describedly judge whether the reverse interference of all carrier frequency all comprises above the reverse interference decision threshold, judge whether the reverse interference of each carrier frequency surpasses the reverse interference decision threshold, specifically comprise any one of following judgment mode:
Adopt the main collection end to make an uproar to make an uproar at the bottom of lifting and the diversity lifting to judge, specifically comprise, judge that whether the lifting of making an uproar of the described main collection end make an uproar the number of the higher thresholding of lifting all above the reverse interference decision threshold greater than the make an uproar lifting of making an uproar at the bottom of the number of the higher thresholding of lifting and the diversity of the end end of greater than;
Adopt main collection received signal strength indicator and diversity reception signal strength signal intensity to indicate to judge, specifically comprise, judge described main collection received signal strength indicator indicates the individual number average greater than the higher thresholding of received signal strength indicator whether to surpass the reverse interference decision threshold greater than number and the diversity reception signal strength signal intensity of the higher thresholding of received signal strength indicator;
Adopt the merging received signal strength indicator to judge, specifically comprise, judge whether the merging received signal strength indicator surpasses the reverse interference decision threshold greater than the number of the higher thresholding of received signal strength indicator.
8. an equipment of selecting access carrier for accessing terminal is characterized in that, comprising:
The first judging unit is used for judging that whether the reverse interference of all carrier frequency is all above the reverse interference decision threshold;
Selected cell, when being used for reverse interference when described first all carrier frequency of judgment unit judges all above the reverse interference decision threshold, the access carrier that the carrier frequency conduct of selection reverse interference minimum accesses terminal; Otherwise then select reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier that accesses terminal, when existing a plurality of reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold in the cordless communication network, select the minimum reverse interference of load to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier that accesses terminal, or, select reverse interference to be less than or equal to the carrier frequency of described reverse interference decision threshold as the access carrier that accesses terminal according to predefined priority;
The second judging unit that is connected with described selected cell, whether the load for the carrier frequency of judging described reverse interference minimum surpasses the access thresholding, if, the the first assignment unit that then is connected with described the second judging unit, reject the carrier frequency of described reverse interference minimum, assignment is described to access terminal on the carrier frequency of reverse interference minimum in the remaining carrier frequency.
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| CN101068435A (en) * | 2007-03-23 | 2007-11-07 | 华为技术有限公司 | Method for conquering back interference and base station controller |
| CN101102603A (en) * | 2006-07-05 | 2008-01-09 | 日本电气株式会社 | Cellular system, method of allocating frequency carrier wave, base station controller and base station |
| CN101278584A (en) * | 2005-10-03 | 2008-10-01 | 艾利森电话股份有限公司 | Carrier wave distribution with optimized throughput |
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| CN101278584A (en) * | 2005-10-03 | 2008-10-01 | 艾利森电话股份有限公司 | Carrier wave distribution with optimized throughput |
| CN101102603A (en) * | 2006-07-05 | 2008-01-09 | 日本电气株式会社 | Cellular system, method of allocating frequency carrier wave, base station controller and base station |
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