CN102469544A - User type switching method, device and system for downlink FFR - Google Patents
User type switching method, device and system for downlink FFR Download PDFInfo
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- CN102469544A CN102469544A CN2010105495695A CN201010549569A CN102469544A CN 102469544 A CN102469544 A CN 102469544A CN 2010105495695 A CN2010105495695 A CN 2010105495695A CN 201010549569 A CN201010549569 A CN 201010549569A CN 102469544 A CN102469544 A CN 102469544A
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Abstract
The invention discloses an user type switching method, device and system for downlink FFR (Fractional Frequency Reuse), for lowering mobile terminal interference and improving system resource utilization rate. The method comprises the steps that: a base station confirms the switch-in of a mobile terminal, and then distributes a scanning indication message to the mobile terminal to indicate the mobile terminal to perform scanning and acquire interference sector signal strength; a service sector signal-strength sent by the mobile terminal and an interference sector signal-strength acquired by the mobile terminal according to the scanning indication message are received; an isolation degree is calculated out based on the service sector signal-strength and the interference sector signal-strength; and the isolation degree and preset conditions are compared, and when the preset conditions are met, the user type of the mobile terminal is switched. The method can effectively lower the downlink signal interference of the mobile terminal and improve both resource utilization rate and spectrum efficiency. The invention also discloses an user type switching device and system for downlink FFR.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to user type changing method, the Apparatus and system of a kind of descending FFR.
Background technology
In recent years, (Orthogonal Frequency Division Multiple Access, OFDMA) technology is owing to can be effectively disturb and narrow band interference anti-multipath, and spectrum efficiency is high and become the mainstream technology of radio communication physical-layer techniques for OFDM.Worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access; WiMAX) adopt the OFDMA technology as the physical layer core technology; And taking into account the WiMAX802.16e standard of mobility and broadband characteristics and the 802.16m standard in the formulation, is the strong competitor of next generation mobile communication standard.
In the WiMAX wireless broadband network, adopt the OFDMA technology in time Radio Resource to be divided into a plurality of time slots, on frequency, unlimited resources is divided into a plurality of subchannels, make Radio Resource be current, frequency two-dimensional structure.Partial frequency multiplexing (Fractional Frequency Reuse; FFR) technology is channel condition and the disturbed condition according to various terminals; Adopt different frequency reuse, subcarrier is divided into some multiplexing group, the different multiplex group can realize the different multiplex coefficient.Because wide-band mobile communication system is very high to the requirement of spectrum efficiency, so reuse will be as much as possible near 1, this just makes adjacent sectors use identical frequency resource, causes the sector-edge serious interference.When portable terminal is received influencing of interference, then need strengthen backward power, this just possibly cause backward power saturated, makes reverse mis-behave, and then influences the normal talking of portable terminal.
Summary of the invention
The present invention provides user type changing method, the Apparatus and system of a kind of descending FFR, disturbs in order to reduce portable terminal, improves the resource utilization of system.
The concrete technical scheme that the embodiment of the invention provides is following:
The user type changing method of a kind of descending FFR comprises:
After the base station confirms that portable terminal inserts, issue the first scanning Indication message, indicate said portable terminal to scan and obtain the interference sector signal strength signal intensity to said portable terminal;
The base station receives the serving sector signal strength signal intensity that said portable terminal sends, and the interference sector signal strength signal intensity that obtains according to the first scanning Indication message of said portable terminal, and based on said serving sector signal strength signal intensity and interference sector signal strength signal intensity calculating isolation;
With said isolation and pre-conditioned comparing,, switch said mobile terminal user type when satisfying when pre-conditioned.
The user type switching device shifter of a kind of descending FFR comprises:
First processing unit after being used for the base station and confirming that portable terminal inserts, issues the first scanning Indication message to said portable terminal, indicates said portable terminal to scan and obtain the interference sector signal strength signal intensity;
Second processing unit; Be used to receive the serving sector signal strength signal intensity that said portable terminal sends; And the interference sector signal strength signal intensity that obtains according to the first scanning Indication message of said portable terminal, and based on said serving sector signal strength signal intensity and interference sector signal strength signal intensity calculating isolation;
The 3rd processing unit is used for said isolation and pre-conditioned comparing, and when satisfying when pre-conditioned, switches said mobile terminal user type.
Based on technique scheme; Through issuing the first scanning Indication message to portable terminal, the serving sector signal strength signal intensity of sending at mobile terminal receive, and after the interference sector signal strength signal intensity obtained according to the scanning Indication message of portable terminal; Calculate isolation based on serving sector signal strength signal intensity and interference sector signal strength signal intensity; Again with isolation and pre-conditioned comparing,, carry out the switching of user type satisfying when pre-conditioned; Thereby make and receive the portable terminal of serious interference and disturbed less portable terminal to adopt different resources; The downstream signal that can effectively reduce portable terminal disturbs, and guarantees the normal use of portable terminal, and improves resource utilization and spectrum efficiency.
Description of drawings
Fig. 1 covers sketch map for FFR of the present invention sector;
Fig. 2 is the OFDMA frame assumption diagram that the present invention is based on FFR;
Fig. 3 is the user type switched system Organization Chart of the descending FFR of the present invention;
Fig. 4 is the user type switching device shifter structure chart of the descending FFR of the present invention;
Fig. 5 is the user type changing method flow chart of the descending FFR of the present invention;
Fig. 6 carries out interference sector scanning sketch map for portable terminal of the present invention.
Embodiment
In order to reduce the influence of interference to portable terminal; The spectrum efficiency of raising system provides the user type changing method of a kind of descending FFR in the embodiment of the invention, can effectively reduce the interference of portable terminal; Improve the speech quality of portable terminal, and improve the resource utilization of system.This method is: after the base station confirms that portable terminal inserts; Issue the scanning Indication message to portable terminal; Indicate this portable terminal to scan and obtain the interference sector signal strength signal intensity, receive the serving sector signal strength signal intensity that this portable terminal sends, and this portable terminal is according to the interference sector signal strength signal intensity of scanning Indication message acquisition; And based on serving sector signal and interference sector signal strength signal intensity calculating isolation; With isolation and pre-conditioned comparing,, switch above-mentioned mobile terminal user type when satisfying when pre-conditioned.
Consult shown in the accompanying drawing 1; For FFR of the present invention sector covers sketch map, the overlay area of base station is divided into 3 sectors, is respectively sector 0, sector 1 and sector 2; For the multiplexing region R 1 in each sector; This zone receives the interference minimum of adjacent sectors downstream signal, gives R1 the zone with interior ring resource allocation, and the effect in R1 zone is in the scope of disturbing permission, to improve the availability of frequency spectrum; And for the multiplexing region R 3 of each sector, then be in order to guarantee area coverage, the same frequency that possibly receive adjacent sectors R1 resource in the secondary lobe zone of each sector disturbs; As use the R1 resource; May seriously reduce spectrum efficiency, even can cause the downlink network link down, therefore; It is reliable and efficiently using outer shroud R3 resource for the secondary lobe of serious interference zone, and the secondary lobe zone is meant two sector adjacent areas; At far point, promptly the zone beyond the outer shroud receives the interference of service station R1 resource and adjacent base station R1 resource simultaneously; As use the R1 resource; Will seriously reduce spectrum efficiency, therefore, it also is reliable and efficiently using the R3 resource for the zone of far point serious interference.In addition, for guaranteeing the reliable transmission of administrative messag, broadcast overhead messages also uses the R3 resource to send.
Based on above-mentioned FFR sector coverage condition; Consult shown in the accompanying drawing 2; The frame structure based on the OFDMA of FFR of the present invention definition mainly comprises targeting signal Preamble, frame control head FCH, account for the R3Zone of subchannel 1/3 resource of frequency range, take the R1 Zone of the whole resources of frequency range of subchannel; Wherein, Frame control head FCH mainly comprises descending mapping DL-MAP and up mapping UL-MAP, and Zone is meant the rectangle frequency spectrum resource piece of being made up of time domain and frequency domain, can comprise a plurality of Zone in the downlink OFDMA frame structure.Sector central user scheduling is at R1 Zone; The sector-edge user scheduling is at R3 Zone; In the FFR system, R1 Zone and R3 Zone adopt the mode of time-division to distinguish, and adopt the mode of frequency division between the R3 Zone of 3 sectors; Just there is not interference between the R3 Zone of 3 sectors, disturbs but exist between the R1 Zone of 3 sectors.Like this, how sector user's portable terminal is distributed to R1 Zone and two multiplexing zones of R3 Zone, the spectrum efficiency that improves the FFR system becomes key point.
In the embodiment of the invention; Adopt isolation to characterize the position of portable terminal in network; Difference between the signal strength signal intensity at the signal strength signal intensity in service station and adjacent station (being jamming station), the interference strength that can the approximate representation portable terminal receives representes when isolation is big that the interference that portable terminal receives is little; Otherwise the interference that receives at isolation hour expression portable terminal is big.R1 Zone zone between the sector will guarantee certain isolation, otherwise portable terminal uses the resource of R1 Zone in the little secondary lobe zone of isolation, can cause strong jamming to portable terminal, and downstream spectrum efficient can seriously descend.In the embodiment of the invention,, disturbing little zone to use the resource of R1 Zone, to improve the availability of frequency spectrum of FFR through use the resource of R3Zone in the zone of serious interference.
In following examples; With the user of system resource (R3 Zone region resource) that adopt to disturb the zone that is lower than threshold value as the first multiplexing regional user, with the user who adopts the system resource (R1 Zone region resource) of disturbing the zone that is not less than threshold value as the second multiplexing regional user.
Below in conjunction with accompanying drawing the preferred embodiment of the invention is elaborated.
Consult shown in the accompanying drawing 3, in the embodiment of the invention, the user type switched system of descending FFR mainly comprises the user type switching device shifter 30 and portable terminal 31 of descending FFR, wherein,
The user type switching device shifter 30 of descending FFR; After being used for the base station and confirming that portable terminal 31 inserts, issue the scanning Indication message, indicate this portable terminal 31 to scan and obtain the interference sector signal strength signal intensity to portable terminal 31; Receive the serving sector signal strength signal intensity that this portable terminal 31 sends; And the interference sector signal strength signal intensity that obtains according to the scanning Indication message of this portable terminal 31, and based on serving sector signal and interference sector signal strength signal intensity calculating isolation, with isolation and pre-conditioned comparing; When satisfying when pre-conditioned, switch the user type of above-mentioned portable terminal 31;
Portable terminal 31; Be used for sending the serving sector signal strength signal intensity to the base station; And receive the scanning Indication message that the base station issues, and obtain the interference sector signal strength signal intensity according to the scanning Indication message, above-mentioned serving sector signal strength signal intensity and interference sector signal strength signal intensity are sent to above-mentioned base station.
Consult shown in the accompanying drawing 4, in the embodiment of the invention, the user type switching device shifter 30 of descending FFR mainly comprises following processing unit:
The 3rd processing unit 403 is used for above-mentioned isolation and pre-conditioned comparing, and when satisfying when pre-conditioned, switches above-mentioned mobile terminal user type.
Based on the said system framework, to consult shown in the accompanying drawing 5, in the embodiment of the invention, the detailed process of the user type changing method of descending FFR is following:
Step 501: the base station issues the scanning Indication message to this portable terminal after confirming that portable terminal inserts, and indicating mobile terminal scans and obtain the interference sector signal strength signal intensity.
Preferably, when portable terminal being inserted in the base station, with portable terminal as first multiplexing regional user's access base station; With the normal access of assurance portable terminal, and behind successful access base station, portable terminal is carried out user type judgement first; Be specially: issue to portable terminal and scan Indication message for the first time; Indicating mobile terminal scans and obtains the interference sector signal strength signal intensity, and the serving sector signal strength signal intensity of mobile terminal receive transmission, and this portable terminal is according to scanning for the first time the interference sector signal strength signal intensity that Indication message obtains; And based on above-mentioned serving sector signal strength signal intensity and interference sector signal strength signal intensity calculating isolation; With isolation and pre-conditioned comparing, when satisfying condition, portable terminal is switched to the second multiplexing regional user from the first multiplexing regional user; Otherwise portable terminal keeps the first multiplexing regional user constant.The embodiment of the invention also can not comprise the decision process of user type first to portable terminal, and not carrying out this process also is a complete embodiment.
Wherein, When portable terminal inserts; The serving sector signal strength signal intensity of obtaining is saved as reference signal strength, and when portable terminal inserts the back and switches this mobile terminal user type, reference signal strength is updated to the serving sector signal strength signal intensity that receives once more.
Wherein, the portable terminal interference sector signal strength signal intensity that scans and obtain can be one or more.
In the embodiment of the invention; Under calculating during the isolation of serving sector based on serving sector signal strength signal intensity and interference sector signal strength signal intensity; Obtain the maximum in the above-mentioned interference sector signal strength signal intensity; And calculate the difference between above-mentioned serving sector signal strength signal intensity and this maximum, this difference is isolation.Be formulated as follows: Rssi
Max BSi=Max (Rssi
BSi), IR
MSi=Rssi
Serv-Rssi
MaxBSi, wherein, Rssi
ServExpression current service sector signals intensity, Rssi
BSiExpression interference sector signal strength signal intensity, Rssi
MaxBSiMaximum in the expression interference sector signal strength signal intensity, IR
MSiThe expression isolation.
After the judgement of accomplishing portable terminal of user type first; The base station need be judged channel condition, when channel condition is constant, then keeps the mobile terminal user type constant; Otherwise; Need judge again the mobile terminal user type, be specially: the current service sector signals intensity that the base station mobile terminal receive sends compares the reference signal strength of current service sector signals intensity and preservation; When the difference of confirming both surpasses predetermined threshold value, issue the scanning Indication message to above-mentioned portable terminal.Preferably, portable terminal can send current service sector signals intensity to the base station to schedule at interval.
In the embodiment of the invention, that the concrete formula that the reference signal strength of current service sector signals intensity and preservation compares is following: | Rssi
Serv-Rssi
SerSaved|＞Rssi
Threshold, wherein, Rssi
SerSavedThe reference signal strength of the serving sector that expression is preserved, Rssi
ThresholdThe expression setting threshold.In the embodiment of the invention; When the difference of the current demand signal intensity of serving sector and reference signal strength surpasses setting threshold; Explain that channel condition changes, need again user type to be judged, issue the scanning Indication message to above-mentioned portable terminal by the base station.For example, mobile terminal user position moves caused channel condition and changes, and then the variation of the signal strength signal intensity that causes.
Step 502: the serving sector signal strength signal intensity that mobile terminal receive sends, and the interference sector signal strength signal intensity that obtains according to the scanning Indication message of this portable terminal, and based on above-mentioned serving sector signal strength signal intensity and interference sector signal strength signal intensity calculating isolation.
Wherein, calculate the method for the method of isolation based on serving sector signal strength signal intensity and interference sector signal strength signal intensity with calculating isolation in the above-mentioned step 501.
Consult shown in the accompanying drawing 6, portable terminal is after receiving the scanning Indication message that the base station issues, and the indication that can only scan Indication message scans the channel information of interference sector, obtains the interference sector signal strength signal intensity, again this interference sector signal strength signal intensity is fed back to the base station.
Step 503: with isolation and pre-conditioned comparing, when satisfying should be pre-conditioned the time switching mobile terminal user type.
Wherein, With isolation and pre-conditioned comparing; Be specially: when portable terminal belongs to the first multiplexing regional user; Isolation and preset access door limit value are compared, and are that portable terminal is switched to the second multiplexing regional user from the first multiplexing regional user more than or equal to the access door limit value at isolation; When portable terminal belongs to the second multiplexing regional user, isolation and the preset threshold value that withdraws from are compared, when withdrawing from threshold value, mobile phone users is switched to the first multiplexing regional user from the second multiplexing regional user at isolation.
In the embodiment of the invention, preset access door limit value is greater than withdrawing from threshold value, in case the portable terminal that the fluctuation among a small circle of stop signal is caused frequently switches user type.Preferably, preset access door limit value ratio withdraws from about threshold value big 3 decibels (db).
Based on technique scheme, in the embodiment of the invention, when the portable terminal access base station; Portable terminal is inserted as first multiplexing region R 3 users, guaranteed the smooth access of portable terminal, after portable terminal successfully inserts; Portable terminal is carried out user type judgement first; The base station indicating mobile terminal scans first, obtains the signal strength signal intensity of interference sector, and calculates isolation based on serving sector signal strength signal intensity and interference sector signal strength signal intensity; At isolation during more than or equal to preset entering threshold value; Portable terminal is switched to the second multiplexing regional user from the first multiplexing regional user, to guarantee improving resource utilization under the normal situation about using of portable terminal.Behind the portable terminal access base station,, carry out user type and switch through regularly judging whether the excursion of current service sector signals intensity exceeds setting threshold, when confirming to exceed setting threshold, recomputates isolation, and compares with pre-conditioned.Different according to the user type of portable terminal under current, adopt the different preset condition, belong to the first multiplexing regional user as portable terminal is current, then during more than or equal to the access door limit value, portable terminal is switched to the second multiplexing regional user at isolation; Belong to the second multiplexing regional user as portable terminal is current, then at isolation when withdrawing from threshold value, portable terminal is switched to the first multiplexing regional user.Switch through above-mentioned user type, for the zone of serious interference, portable terminal is switched to the first multiplexing regional user, evading interference, thereby the downstream signal that reduces portable terminal disturbs, and guarantees the normal use of portable terminal; And, portable terminal is switched to the second multiplexing regional user for disturbing little zone, and guaranteeing under the normal situation about using of portable terminal, improve the resource utilization and the spectrum efficiency of resource utilization and FFR system.And; In the embodiment of the invention; Adopt the different resources scheduling strategy for the user who is in different multiplexing zones, promptly adopt R3 Zone to carry out scheduling of resource, and adopt R1 Zone to carry out scheduling of resource for second multiplexing region R 1 user for first multiplexing region R 3 users; Thereby can reduce interference effectively, improve the resource utilization and the availability of frequency spectrum of FFR system.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (14)
1. the user type changing method of a descending FFR is characterized in that, comprising:
The base station issues the first scanning Indication message to portable terminal, indicates said portable terminal to scan and obtain the interference sector signal strength signal intensity;
The base station receives the serving sector signal strength signal intensity that said portable terminal sends, and the interference sector signal strength signal intensity that obtains according to the first scanning Indication message of said portable terminal, and based on said serving sector signal strength signal intensity and interference sector signal strength signal intensity calculating isolation;
With said isolation and pre-conditioned comparing,, switch said mobile terminal user type when satisfying when pre-conditioned.
2. the method for claim 1 is characterized in that, also comprises:
When said base station confirms that portable terminal inserts, said portable terminal as first multiplexing regional user's access base station, and is issued the second scanning Indication message to said portable terminal, indicate said portable terminal to scan and obtain the interference sector signal strength signal intensity;
Receive the serving sector signal strength signal intensity that said portable terminal sends, and the interference sector signal strength signal intensity that obtains according to the second scanning Indication message of said portable terminal, and based on said serving sector signal strength signal intensity and interference sector signal strength signal intensity calculating isolation;
With said isolation and pre-conditioned comparing, when satisfying condition, switch said mobile terminal user type.
3. method as claimed in claim 2 is characterized in that, when said base station confirms that portable terminal inserts, comprising:
The serving sector signal strength signal intensity that obtains is saved as reference signal strength, and when portable terminal inserts the back and switches said mobile terminal user type, said reference signal strength is updated to the serving sector signal strength signal intensity that receives once more.
4. method as claimed in claim 3 is characterized in that, after said base station confirms that said portable terminal inserts, before said portable terminal issues the scanning Indication message, comprising:
Said base station receives the current service sector signals intensity that said portable terminal sends;
The reference signal strength of said current service sector signals intensity and preservation is compared, when the difference of confirming both surpasses setting threshold, issue the first scanning Indication message to said portable terminal.
5. method as claimed in claim 4 is characterized in that, said base station receives the serving sector signal strength signal intensity that said portable terminal sends, and comprising:
Said base station receives the current service sector signals intensity that said portable terminal sends to schedule at interval.
6. method as claimed in claim 3 is characterized in that, when calculating said isolation based on said serving sector signal strength signal intensity and interference sector signal strength signal intensity, comprising:
Obtain the maximum in the interference sector signal strength signal intensity of reception;
Calculate the difference between said serving sector signal strength signal intensity and the said maximum, and with said difference as isolation.
7. method as claimed in claim 6 is characterized in that, with said isolation and pre-conditioned comparing, when satisfying when pre-conditioned, switches said mobile terminal user type, comprising:
When said portable terminal belongs to the first multiplexing regional user; Said isolation and preset access door limit value are compared; During more than or equal to said access door limit value, said portable terminal is switched to the second multiplexing regional user from the said first multiplexing regional user at said isolation;
When said portable terminal belongs to the second multiplexing regional user; Said isolation and the preset threshold value that withdraws from are compared; When withdrawing from threshold value, said portable terminal is switched to the first multiplexing regional user from the said second multiplexing regional user less than said at said isolation.
8. like each described method of claim 1-7, it is characterized in that the said first multiplexing regional user adopts the system resource of disturbing the zone that is lower than threshold value, the said second multiplexing regional user adopts the system resource of disturbing the zone that is not less than threshold value.
9. the user type switching device shifter of a descending FFR is characterized in that, comprising:
First processing unit after being used for the base station and confirming that portable terminal inserts, issues the first scanning Indication message to said portable terminal, indicates said portable terminal to scan and obtain the interference sector signal strength signal intensity;
Second processing unit; Be used for the base station and receive the serving sector signal strength signal intensity that said portable terminal sends; And the interference sector signal strength signal intensity that obtains according to the first scanning Indication message of said portable terminal, and based on said serving sector signal strength signal intensity and interference sector signal strength signal intensity calculating isolation;
The 3rd processing unit is used for said isolation and pre-conditioned comparing, and when satisfying when pre-conditioned, switches said mobile terminal user type.
10. device as claimed in claim 9; It is characterized in that, when said first processing unit confirms that in said base station portable terminal inserts, said portable terminal is inserted said base station as the first multiplexing regional user; And to said portable terminal issue second scanning Indication message; Indicate said portable terminal to scan and obtain the interference sector signal strength signal intensity, receive the serving sector signal strength signal intensity that said portable terminal sends, and said portable terminal is according to the interference sector signal strength signal intensity of the second scanning Indication message acquisition; And based on said current demand signal intensity and interference sector signal strength signal intensity calculating isolation; With said isolation and pre-conditioned comparing, when satisfying condition, switch said mobile terminal user type.
11. device as claimed in claim 10; It is characterized in that; When said first processing unit confirms that in said base station portable terminal inserts; The serving sector signal strength signal intensity that obtains is saved as reference signal strength, and when portable terminal inserts the back and switches said mobile terminal user type once more, said reference signal strength is updated to the serving sector signal strength signal intensity that receives once more.
12. device as claimed in claim 11; It is characterized in that said first processing unit is after said base station confirms that said portable terminal inserts, before said portable terminal issues the first scanning Indication message; Said base station receives the current service sector signals intensity that said portable terminal sends; And the reference signal strength of said current service sector signals intensity and preservation compared, when the difference of confirming both surpasses setting threshold, issue the first scanning Indication message to said portable terminal.
13. device as claimed in claim 11; It is characterized in that; When said second processing unit calculates said isolation based on said serving sector signal strength signal intensity and interference sector signal strength signal intensity; Obtain the maximum in the interference sector signal strength signal intensity of reception, calculate the difference between said serving sector signal strength signal intensity and the said maximum, and with said difference as isolation.
14. device as claimed in claim 13 is characterized in that, said the 3rd processing unit is said isolation and pre-conditioned comparing, and when satisfying when pre-conditioned, switches said mobile terminal user type, is specially:
When said portable terminal belongs to the first multiplexing regional user; Said isolation and preset access door limit value are compared; During more than or equal to said access door limit value, said portable terminal is switched to the second multiplexing regional user from the said first multiplexing regional user at said isolation;
When said portable terminal belongs to the second multiplexing regional user; Said isolation and the preset threshold value that withdraws from are compared; When withdrawing from threshold value, said portable terminal is switched to the first multiplexing regional user from the said second multiplexing regional user less than said at said isolation.
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| CN1332536A (en) * | 2000-06-23 | 2002-01-23 | 株式会社Ntt都科摩 | Channel allocation method and communication device |
| CN101390356A (en) * | 2006-02-24 | 2009-03-18 | 华为技术有限公司 | Method and apparatus for wireless resource allocation |
| CN101420699A (en) * | 2008-12-03 | 2009-04-29 | 华为技术有限公司 | Control method, apparatus and base station for same station adjacent cell interference |
| WO2010024536A2 (en) * | 2008-08-27 | 2010-03-04 | 엘지전자 주식회사 | Apparatus for transmitting a signal in a wireless communication system and method for same |
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2010
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332536A (en) * | 2000-06-23 | 2002-01-23 | 株式会社Ntt都科摩 | Channel allocation method and communication device |
| CN101390356A (en) * | 2006-02-24 | 2009-03-18 | 华为技术有限公司 | Method and apparatus for wireless resource allocation |
| WO2010024536A2 (en) * | 2008-08-27 | 2010-03-04 | 엘지전자 주식회사 | Apparatus for transmitting a signal in a wireless communication system and method for same |
| CN101420699A (en) * | 2008-12-03 | 2009-04-29 | 华为技术有限公司 | Control method, apparatus and base station for same station adjacent cell interference |
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