CN102917375B - Communication method and equipment based on advanced antenna system - Google Patents
Communication method and equipment based on advanced antenna system Download PDFInfo
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- CN102917375B CN102917375B CN201110222452.0A CN201110222452A CN102917375B CN 102917375 B CN102917375 B CN 102917375B CN 201110222452 A CN201110222452 A CN 201110222452A CN 102917375 B CN102917375 B CN 102917375B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
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Abstract
The embodiment of the invention relates to a communication method and equipment based on an advanced antenna system. The communication method based on the advanced antenna system comprises the following steps of: receiving a measurement report transmitted by user equipment; transmitting a switching request command to a target base station according to the measurement report, wherein the switching request command carries a horizontal arrival angle, a vertical arrival angle and an antenna height of a source base station; receiving a switching response command returned by the target base station, wherein the switching request response carries a horizontal arrival angle and a vertical arrival angle of the target base station, which is figured out according to the horizontal arrival angle, the vertical arrival angle and the antenna height of the source base station, antenna height of the target base station as well as a distance between the source base station and the target base station; and transmitting a switching command to the user equipment according to the switching response command, so that the user equipment transmits a random access request command to the target base station so as to be accessed into the target base station. According to the embodiment of the invention, the random access quality of the UE to the target eNB is improved and the access failure rate is reduced.
Description
Technical field
The present invention relates to wireless communication field, more particularly, relate to the communication means based on advanced antenna system and equipment.
Background technology
In the wireless communication system in future, higher rate, more Large Copacity, more extensively covering is the main target of system.Under limited frequency spectrum resource, how promoting spectrum efficiency is current problem urgently to be resolved hurrily.Advanced antenna system (Advanced Antenna System, be called for short AAS) by using multiple bay, comprise level to array element, and Vertical dimension array element, adjust antenna mode adaptively, certain specific user will be aimed at after wave beam forming, when original, frequently, the resource of code turn increases Spatial Dimension, wireless communication system is made to meet the requirement of the large throughput of modern data business to a greater degree, to reach the object expanding the network coverage and improve power system capacity, therefore, one of AAS important candidate technologies having become future broadband wireless communication systems.
In the antenna system of current employing, subscriber equipment (User Equipment is called for short UE) is at two base stations (Evolved Node B, be called for short eNB) between when switching, cut-in quality is lower, switches (Handover is called for short HO) success rate lower.
In addition, in current coordinating district interference scheme, eNB indicates (Overload Indicator by the overload of X2 port transmission, be called for short OI)/high interference instruction (High Interference Indicator, be called for short HII)/arrowband transmitted power (Relative Narrowband Tx Power relatively, be called for short RNTP) etc. instruction, represent the overload/high interference characteristic on some Physical Resource Block (Physical Resource Block is called for short PRB).Due to the introducing of AAS, no matter how wave beam adjusts, inherently there is the region of a wave beam overlap between Liang Ge community, even if adjusted by the wave beam of space dimension, interference also cannot be avoided.Therefore, if reasonably interference evade scheme, in these territories, beam overlap area, two adjacent eNB have employed again identical PRB resource, inherently in AAS system, produce stronger interference, make system performance degradation.
Summary of the invention
The embodiment of the present invention on the one hand technical problem to be solved improves quality of handoff when UE switches between eNB, and reduce handover failure rate.
The present invention on the other hand technical problem to be solved coordinates the interference in territory, beam overlap area between community, improves the communication quality of UE in territory, beam overlap area.
According to the embodiment of the present invention, propose a kind of communication means based on advanced antenna system, comprising:
Receive the measurement report that subscriber equipment sends;
Send handover request order according to described measurement report to object base station, the antenna height of the horizontal angle of arrival of described source base station, the vertical angle of arrival of described source base station and described source base station is carried in wherein said handover request order;
Receive object base station and return the handoff response order corresponding with described handover request order, the horizontal angle of arrival according to described source base station, the vertical angle of arrival of described source base station, the antenna height of described source base station, the antenna height of described object base station are carried in wherein said handoff response order, and the horizontal angle of arrival of described object base station that calculates of the distance between described source base station with described object base station and the vertical angle of arrival of described object base station;
Send switching command according to described handoff response order to described subscriber equipment, send random access request order, to access described object base station to make described subscriber equipment to described object base station.
According to the embodiment of the present invention, propose a kind of communication means based on advanced antenna system, comprising:
Receive the handover request order that source base station sends, the antenna height of the horizontal angle of arrival of source base station, the vertical angle of arrival of described source base station and described source base station is carried in wherein said handover request order;
The handoff response order corresponding with described handover request order is returned to described source base station, the horizontal angle of arrival of the described object base station that antenna height according to the horizontal angle of arrival of described source base station, the vertical angle of arrival of described source base station and described source base station is carried in wherein said handoff response order, the antenna height of object base station, distance between described source base station with described object base station calculate and the vertical angle of arrival, make described source base station send switching command according to described handoff response order to subscriber equipment;
Receive the random access request order that described subscriber equipment sends according to described switching command, carry out the access procedure of described subscriber equipment.
According to the embodiment of the present invention, propose a kind of communication means based on advanced antenna system, described method comprises:
The scope of the first territory, estimation beam overlap area, base station, territory, described beam overlap area is the territory, beam overlap area of the community under described first base station and the community under the second base station;
The wave beam used in territory, described beam overlap area based on advanced antenna system is determined in described first base station, and the Physical Resource Block that described first base station uses in territory, described beam overlap area is informed to described second base station by described first base station, with the Physical Resource Block making described second base station not use described first base station to use in territory, described beam overlap area.
According to the embodiment of the present invention, propose a kind of base station based on advanced antenna system, described base station comprises:
Receiving element, for receiving the measurement report that subscriber equipment sends;
Handover request unit, described measurement report for receiving according to described receiving element sends handover request order to object base station, and the antenna height of the horizontal angle of arrival of described source base station, the vertical angle of arrival of described source base station and described source base station is carried in wherein said handover request order;
Handoff response unit, for the handoff response order sending to the described handover request order of described object base station corresponding with described handover request unit receiving that object base station returns, the horizontal angle of arrival according to described source base station, the vertical angle of arrival of described source base station, the antenna height of described source base station, the antenna height of described object base station are carried in wherein said handoff response order, and the horizontal angle of arrival of described object base station that calculates of the distance between described source base station with described object base station and the vertical angle of arrival of described object base station;
Transmitting element, sends switching command for the described switching the corresponding command received according to described handoff response unit to described subscriber equipment, sends random access request order, to access described object base station to make described subscriber equipment to described object base station.
According to the embodiment of the present invention, propose a kind of base station based on advanced antenna system, described base station comprises:
Receiving element, for receiving the handover request order that source base station sends, the antenna height of the horizontal angle of arrival of described source base station, the vertical angle of arrival of described source base station and described source base station is carried in wherein said handover request order;
Transmitting element, described handover request order for receiving according to described receiving element returns the handoff response order corresponding with described handover request order to described source base station, the horizontal angle of arrival according to described source base station is carried in wherein said handoff response order, the vertical angle of arrival of described source base station and the antenna height of described source base station, the antenna height of described base station, the horizontal angle of arrival of the described base station that the distance between described source base station with described base station calculates and the vertical angle of arrival of described base station, described source base station is made to send switching command according to described handoff response order to subscriber equipment,
Access control unit, for receiving the random access request order that subscriber equipment sends, carries out the access procedure of described subscriber equipment.
According to the embodiment of the present invention, propose a kind of base station based on advanced antenna system, described base station comprises evaluation unit, determining unit and transmitting element,
Described evaluation unit, for estimating the scope in territory, beam overlap area, territory, described beam overlap area is the territory, beam overlap area of the community under described base station and the community under the second base station;
Describedly to determine and transmitting element, for determining that described base station uses the wave beam based on advanced antenna system in the territory, beam overlap area that described evaluation unit is estimated, and the Physical Resource Block that described base station uses in the territory, beam overlap area that described evaluation unit is estimated is informed to described second base station, do not use described base station to use to make described second base station in territory, described beam overlap area Physical Resource Block.
According to the embodiment of the present invention, when UE switches between source eNB and object eNB, object eNB, according to the relevant AAS information of source eNB, carries out the figuration of horizontal dimension and vertical dimension to wave beam, improves the Stochastic accessing quality of UE for object eNB, reduces access failure rate.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.In the accompanying drawings:
Fig. 1 is the schematic diagram that in the LTE system based on AAS, UE switches between source eNB and object eNB;
Fig. 2 is the flow chart of the communication means of the embodiment of the present invention;
Fig. 3 is the concrete signaling process figure that UE carries out switching between source eNB and object eNB;
Fig. 4 is that in the LTE system based on AAS, UE carries out in the territory, beam overlap area between adjacent eNB the schematic diagram communicated;
Fig. 5 is the flow chart of the communication means of the embodiment of the present invention;
Fig. 6 is the schematic configuration diagram of the base station 600 based on AAS system according to the embodiment of the present invention;
Fig. 7 is the schematic configuration diagram of the base station 700 based on AAS system according to the embodiment of the present invention; With
Fig. 8 is the schematic configuration diagram of the base station 800 based on AAS system according to the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
When UE switches between two base stations, it is only had successfully to have received switching command (HO command), and have received accidental access response (the Random Access Response of new base station, be called for short RAR) after, the successful Stochastic accessing of ability is to new object base station.UE is according to the configuration of object base station, record pre-coding matrix instruction (Precoding Matrix Indicator, be called for short PMI) etc. measuring amount after reporting, wave beam adjustment could be carried out according to correlation measurements such as PMI in object base station, for user provides better service.Based in the system of AAS, wave beam not only adjusts in the horizontal direction, also can adjust in vertical direction simultaneously, allow object base station carry out wave beam forming to UE, can increase substantially the Stochastic accessing quality of UE in the switching flow of UE, reduces the mortality of HO.
Fig. 1 is the schematic diagram that in the LTE system based on AAS, UE switches between source eNB and object eNB.As shown in Figure 1, the height of source eNB is h
1, UE is α relative to the horizontal direction angle of arrival (Angle of Arrival is called for short AOA) of source eNB
1, be α relative to the vertical direction AOA of source eNB
2, source eNB sends to object eNB by handover request (HO Request) above AAS relevant information.Object eNB is by the antenna height h of self
2, the distance D between website, and the AAS relevant information that source eNB informs, can calculate the horizontal direction AOA (β of wave beam when this UE accesses respectively according to formula (1) and (2)
1) and vertical direction AOA (β
2);
Fig. 2 is the flow chart of the communication means 200 of the embodiment of the present invention.As shown in Figure 2,
The measurement report that 210: source eNB reception UE sends;
220: source eNB sends handover request order according to described measurement report to object eNB, and the horizontal AOA of source eNB, vertical AOA and antenna height information are carried in wherein said handover request order;
230: source eNb receives the handoff response order corresponding with described handover request order that return of object eNB, and antenna height according to the horizontal AOA of described source eNB, the vertical AOA of source eNB and source eNB, the antenna height of object eNB, the horizontal AOA of source eNB and the object eNB that the distance between object eNB calculates and vertical AOA are carried in wherein said handoff response order;
240: source eNB sends switching command according to described handoff response order to UE, sends random access request order, to access described object eNB to make UE to object eNB.
According to the embodiment of the present invention, object eNB returns the accidental access response order corresponding with described random access request order to UE, and object eNB carries out the wave beam forming of horizontal dimension and vertical dimension according to the horizontal AOA of object eNB and vertical AOA.
Fig. 3 is the concrete signaling process figure that UE carries out switching between source eNB and object eNB.As shown in Figure 3, signaling process comprises:
Step 301:UE is to Serving cell report measurement results;
Step 302: source eNB sends the handover request signaling strengthened to object eNB according to measurement result, containing the information that the AAS added is relevant in signaling wherein, comprises horizontal direction AOA (α
1), vertical direction AOA (α
2), and antenna height h
1.
Step 303: object eNB is by the antenna height h of self
2, the distance D between source base station eNB and object eNB, and the AAS relevant information that source eNB informs, can calculate the horizontal direction AOA (β of wave beam when this UE accesses respectively according to aforementioned formula (1) and (2)
1) and vertical direction AOA (β
2);
The switching request acknowledgement message (HO Request ACK) comprising AAS assignment information is issued source eNB by step 304: object eNB;
Step 305: source eNB sends switching command to UE;
Step 306: the backward object eNB receiving switching command as UE initiates random access request (Random Access);
Step 307: object eNB when descending transmission accidental access response (RA-response), according to the β calculated
1and β
2carry out the wave beam forming of horizontal dimension and vertical dimension.
According to the embodiment of the present invention, when UE switches between source eNB and object eNB, object eNB, according to the relevant AAS information of source eNB, carries out the figuration of horizontal dimension and vertical dimension to wave beam, improves the Stochastic accessing quality of UE for object eNB, reduces access failure rate.
Fig. 4 is that in the LTE system based on AAS, UE carries out in the territory, beam overlap area between adjacent eNB the schematic diagram communicated.Territory, beam overlap area mentioned here refers to the territory, beam overlap area between the community under adjacent base station.As shown in Figure 4, the overlapping region between adjacent eNB1 and eNB2 is by the horizontal AOA scope (α of eNB
1-1, α
1-2) with vertical AOA scope (α
2-1, α
2-2) limit.If according to agreement regulation, in LTE system, UE and the eNB Physical Resource Block (Physical Resources Block, abbreviation PRB) adopted that communicates is PRB
1... PRB
n, then the PRB adopted when UE and the eNB1 be in this territory, beam overlap area can be allowed to communicate is PRB
1, PRB
2... PRB
k, and eNB1 notifies eNB2, the PRB adopted when UE and eNB2 is communicated is PRB
k+1, PRB
k+2... PRBn.So just can reduce the interference occurred when communicating between UE and the eNB be in territory, beam overlap area.
Fig. 5 is the flow chart of the communication means of the embodiment of the present invention, as shown in Figure 5:
The scope in the territory, beam overlap area of 510:eNB1 estimation and adjacent eNB2, territory, described beam overlap area is the territory, beam overlap area of the community under eNB1 and the community under eNB2;
520:eNB1 determines the wave beam used in territory, described beam overlap area based on AAS system, and the PRB that this eNB1 uses in territory, described beam overlap area is informed to eNB2 by eNB1, with the PRB making eNB2 not use eNB1 to use in territory, described beam overlap area, such as, the PRB that eNB2 uses according to eNB1, adjustment eNB2 uses the Physical Resource Block different from eNB1 from territory, described beam overlap area.
According to the embodiment of the present invention, eNB1 can according to the specified down transmitting power of the specified down transmitting power of eNB1, eNB2, and the scope of the scope of the horizontal AOA in territory, beam overlap area described in the range estimation of eNB1 and eNB2 and vertical AOA.
According to the embodiment of the present invention, eNB1 can be realized by load information (Load Information) signaling and its PRB used in territory, described beam overlap area is informed to eNB2.According to the embodiment of the present invention, the described PRB of instruction can be increased be used for the IE such as the OI/HII/RNTP in territory, described beam overlap area in Load Information signaling, specifically comprise the corresponding overload relevant to AAS information to indicate (corresponding AAS information related OI), the corresponding high interference relevant to AAS information indicates (corresponding AAS information related HII), and the relative arrowband transmitted power (corresponding AAS information related RNTP) relevant to AAS information of correspondence.
According to the embodiment of the present invention, when the beam overlap area territory of UE between adjacent eNB communicates, because eNB1 has coordinated the PRB that eNB2 uses separately, so significantly reduce the interference between adjacent eNB, improve communication quality.
Fig. 6 is the schematic configuration diagram of the base station 600 based on AAS system according to the embodiment of the present invention.Base station 600 can be used as the source base station in the inventive method embodiment.As shown in Figure 6, base station 600 comprises:
Receiving element 610, for receiving the measurement report that UE sends;
Handover request unit 620, sends handover request order for the described measurement report received according to receiving element 610 to object eNB, and the horizontal AOA of source eNB1, vertical AOA and antenna height are carried in wherein said handover request order;
Handoff response unit 630, for the handoff response order sending to the described handover request order of described object eNB corresponding with handover request unit 620 receiving that object eNB returns, antenna height according to the horizontal AOA of source eNB, the vertical AOA of source eNB and source eNB, the antenna height of object eNB, the horizontal AOA of source eNB and the object eNB that the distance between object eNB calculates and vertical AOA are carried in wherein said handoff response order;
Transmitting element 640, sends switching command for the described switching the corresponding command received according to handoff response unit 630 to UE, sends random access request order, to access described object base station to make UE to object eNB.
According to the embodiment of the present invention, object eNB returns the accidental access response order corresponding with described random access request order to UE, and object eNB carries out the wave beam forming of horizontal dimension and vertical dimension according to the horizontal AOA of object eNB and vertical AOA.
Feature in the inventive method embodiment is also applicable to base station 600 of the present invention.Specifically, object eNB calculates the horizontal AOA of object eNB and vertical AOA according to above-mentioned formula (1) and (2).
Fig. 7 is the schematic configuration diagram of the base station 700 based on AAS system according to the embodiment of the present invention.Base station 700 can be used as the object eNB in the inventive method embodiment.As shown in Figure 6, base station 700 comprises:
Receiving element 710, for receiving the handover request order that source eNB sends, the antenna height of the horizontal AOA of source eNB, the vertical AOA of source eNB and source eNB is carried in wherein said handover request order;
Transmitting element 720, described handover request order for receiving according to receiving element 710 returns the handoff response order corresponding with described handover request order to source eNB, and wherein said handoff response order is carried according to the horizontal AOA of described source eNB, the vertical AOA of source eNB and the antenna height of source eNB, the antenna height of object eNB and according to the horizontal AOA of source eNB and the object eNB that the distance between object eNB calculates and vertical AOA;
Access control unit 730, for receiving the random access request order that UE sends, carries out the access procedure of described subscriber equipment.
According to the embodiment of the present invention, base station 700 can also comprise:
Antenna control unit 740, for returning the accidental access response order corresponding with described random access request order to UE, wherein carries out the wave beam forming of horizontal dimension and vertical dimension according to the horizontal AOA of described object eNB and the vertical AOA of object eNB.
Feature in the inventive method embodiment is also applicable to base station 700 of the present invention.Specifically, object eNB calculates the horizontal AOA of object eNB and vertical AOA according to above-mentioned formula (1) and (2).
Fig. 8 is the schematic configuration diagram of the base station 800 based on AAS system according to the embodiment of the present invention.Base station 800 is used for the communication means of the embodiment of the present invention realized as shown in Figure 5.As shown in Figure 8, base station 800 comprises evaluation unit 810, determining unit and transmitting element 820, wherein evaluation unit 810 is for estimating the scope in the territory, beam overlap area of the community under base station 800 and the community under adjacent eNB, and territory, described beam overlap area is the territory, beam overlap area of the community under described base station 800 and the community under adjacent eNB; Determine with transmitting element 820 for determining that base station 800 uses the wave beam based on AAS system in the territory, beam overlap area that described evaluation unit is estimated, and the PRB that described base station 800 uses in the territory, beam overlap area that described evaluation unit is estimated is informed to described adjacent eNB, with the PRB making described adjacent eNB not use base station 800 to use in territory, described beam overlap area.Such as, described adjacent eNB adjusts described adjacent eNB and uses the PRB different from described base station 800 from territory, described beam overlap area.
According to the embodiment of the present invention, evaluation unit 810 can according to the specified down transmitting power of the specified down transmitting power of base station 800, described adjacent eNB, and the scope of horizontal AOA in territory, beam overlap area described in the range estimation of base station 800 and described adjacent eNB and the scope of vertical AOA.
According to the embodiment of the present invention, the scope in territory, described beam overlap area can be limited by the horizontal angle of arrival of first of base station 800, the second horizontal angle of arrival, the first vertical angle of arrival, the second vertical angle of arrival, the wherein said second horizontal angle of arrival is more than or equal to the described first horizontal angle of arrival, and the described second vertical angle of arrival is more than or equal to the described first vertical angle of arrival.
According to the embodiment of the present invention, determine by load information instruction, the PRB that base station 800 uses in territory, described beam overlap area to be informed to described adjacent eNB with transmitting element 820, wherein said load information instruction is carried and is used to indicate that described PRB indicates for the overload in territory, described beam overlap area, high interference instruction, relatively arrowband power information.
Ordinary skill people personnel are appreciated that method and system disclosed herein is only exemplary in nature, and the process that method comprises is not limited to the order described in literary composition, but can according to specific needs and technology realize convenience adjust.Except the above-mentioned content exemplified, according to the needs of embody rule occasion, described method and system can also comprise other processes and module.
Those of ordinary skill in the art can recognize, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Although illustrate and describe some embodiments of the present invention, it will be understood by those skilled in the art that without departing from the principles and spirit of the present invention, can carry out various amendment to these embodiments, such amendment should fall within the scope of the present invention.
Claims (11)
1., based on a communication means for advanced antenna system, it is characterized in that,
Receive the measurement report that subscriber equipment sends;
Send handover request order according to described measurement report to object base station, the antenna height of the horizontal angle of arrival of source base station, the vertical angle of arrival of described source base station and described source base station is carried in wherein said handover request order;
Receive object base station and return the handoff response order corresponding with described handover request order, the horizontal angle of arrival according to described source base station, the vertical angle of arrival of described source base station, the antenna height of described source base station, the antenna height of described object base station are carried in wherein said handoff response order, and the horizontal angle of arrival of described object base station that calculates of the distance between described source base station with described object base station and the vertical angle of arrival of described object base station;
Send switching command according to described handoff response order to described subscriber equipment, send random access request order, to access described object base station to make described subscriber equipment to described object base station.
2. the method for claim 1, is characterized in that, described method also comprises:
Described object base station returns the accidental access response order corresponding with described random access request order to described subscriber equipment, and the wave beam forming of horizontal dimension and vertical dimension is carried out according to the horizontal angle of arrival of described object base station and the vertical angle of arrival in described object base station.
3. method as claimed in claim 1 or 2, is characterized in that,
The horizontal angle of arrival of described object base station and the vertical angle of arrival of described object base station are by following formulae discovery:
Wherein α
1for the horizontal angle of arrival of source base station, α
2for the vertical angle of arrival of source base station, h
1for the antenna height of source base station, D is the distance between source base station and object base station, h
2for the purpose of the antenna height of base station, β
1for the purpose of the horizontal angle of arrival of base station, β
2for the purpose of the vertical angle of arrival of base station.
4., based on a communication means for advanced antenna system, it is characterized in that,
Receive the handover request order that source base station sends, the antenna height of the horizontal angle of arrival of source base station, the vertical angle of arrival of described source base station and described source base station is carried in wherein said handover request order;
The handoff response order corresponding with described handover request order is returned to described source base station, the horizontal angle of arrival of the described object base station that antenna height according to the horizontal angle of arrival of described source base station, the vertical angle of arrival of described source base station and described source base station is carried in wherein said handoff response order, the antenna height of object base station, distance between described source base station with described object base station calculate and the vertical angle of arrival, make described source base station send switching command according to described handoff response order to subscriber equipment;
Receive the random access request order that described subscriber equipment sends according to described switching command, carry out the access procedure of described subscriber equipment.
5. method as claimed in claim 4, it is characterized in that, described method also comprises: return the accidental access response order corresponding with described random access request order to described subscriber equipment, and carries out the wave beam forming of horizontal dimension and vertical dimension according to the horizontal angle of arrival of described object base station and the vertical angle of arrival of described object base station.
6. the method as described in claim 4 or 5, is characterized in that,
The horizontal angle of arrival of described object base station passes through following formulae discovery with the vertical angle of arrival:
Wherein α
1for the horizontal angle of arrival of source base station, α
2for the vertical angle of arrival of source base station, h
1for the antenna height of source base station, D is the distance between source base station and object base station, h
2for the purpose of the antenna height of base station, β
1for the purpose of the horizontal angle of arrival of base station, β
2for the purpose of the vertical angle of arrival of base station.
7. based on a base station for advanced antenna system, it is characterized in that, described base station comprises:
Receiving element, for receiving the measurement report that subscriber equipment sends;
Handover request unit, described measurement report for receiving according to described receiving element sends handover request order to object base station, and the antenna height of the horizontal angle of arrival of source base station, the vertical angle of arrival of described source base station and described source base station is carried in wherein said handover request order;
Handoff response unit, for the handoff response order sending to the described handover request order of described object base station corresponding with described handover request unit receiving that object base station returns, the horizontal angle of arrival according to described source base station, the vertical angle of arrival of described source base station, the antenna height of described source base station, the antenna height of described object base station are carried in wherein said handoff response order, and the horizontal angle of arrival of described object base station that calculates of the distance between described source base station with described object base station and the vertical angle of arrival of described object base station;
Transmitting element, sends switching command for the described switching the corresponding command received according to described handoff response unit to described subscriber equipment, sends random access request order, to access described object base station to make described subscriber equipment to described object base station.
8. base station as claimed in claim 7, is characterized in that,
The horizontal angle of arrival of described object base station and the vertical angle of arrival of described object base station are by following formulae discovery:
Wherein α
1for the horizontal angle of arrival of source base station, α
2for the vertical angle of arrival of source base station, h
1for the antenna height of source base station, D is the distance between source base station and object base station, h
2for the purpose of the antenna height of base station, β
1for the purpose of the horizontal angle of arrival of base station, β
2for the purpose of the vertical angle of arrival of base station.
9. based on a base station for advanced antenna system, it is characterized in that, described base station comprises:
Receiving element, for receiving the handover request order that source base station sends, the antenna height of the horizontal angle of arrival of described source base station, the vertical angle of arrival of described source base station and described source base station is carried in wherein said handover request order;
Transmitting element, described handover request order for receiving according to described receiving element returns the handoff response order corresponding with described handover request order to described source base station, the horizontal angle of arrival according to described source base station is carried in wherein said handoff response order, the vertical angle of arrival of described source base station and the antenna height of described source base station, the antenna height of described base station, and the horizontal angle of arrival of described base station to calculate according to the distance between described source base station with described base station and the vertical angle of arrival of described base station, described source base station is made to send switching command according to described handoff response order to subscriber equipment,
Access control unit, for receiving the random access request order that described subscriber equipment sends according to described switching command, carries out the access procedure of described subscriber equipment.
10. base station as claimed in claim 9, it is characterized in that, described base station also comprises:
Antenna control unit, for returning the accidental access response order corresponding with described random access request order to described subscriber equipment, and carries out the wave beam forming of horizontal dimension and vertical dimension according to the horizontal angle of arrival of described base station and the vertical angle of arrival of described base station.
11. base stations as described in claim 9 or 10, is characterized in that,
The horizontal angle of arrival of described base station and the vertical angle of arrival of described base station are by following formulae discovery:
Wherein α
1for the horizontal angle of arrival of source base station, α
2for the vertical angle of arrival of source base station, h
1for the antenna height of source base station, D is the distance between source base station and described base station, h
2for the antenna height of described base station, β
1for the horizontal angle of arrival of described base station, β
2for the vertical angle of arrival of described base station.
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| CN201110222452.0A CN102917375B (en) | 2011-08-04 | 2011-08-04 | Communication method and equipment based on advanced antenna system |
| PCT/CN2012/079714 WO2013017108A1 (en) | 2011-08-04 | 2012-08-06 | Advanced antenna system-based communication method and device |
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| WO2015036020A1 (en) * | 2013-09-11 | 2015-03-19 | Huawei Technologies Co., Ltd. | Antenna device and method for controlling focusing of an antenna beam of an antenna array |
| EP2928234B1 (en) * | 2014-03-31 | 2016-05-25 | Alcatel Lucent | Methods For Operating A Mobile Station And A Base Station In A Radio Communication System, Mobile Station And Base Station Thereof |
| EP2928235B1 (en) * | 2014-03-31 | 2016-05-25 | Alcatel Lucent | Methods For Operating A First Base Station And A Second Base Station In A Radio Communication System, First Base Station And Second Base Station Thereof |
| WO2018025556A1 (en) * | 2016-08-03 | 2018-02-08 | 日本電気株式会社 | Apparatus, method, system, program and recording medium related to beamforming |
| CN108347749B (en) * | 2017-01-24 | 2021-01-15 | 中国移动通信有限公司研究院 | Switching method, user equipment and base station |
| US20180368179A1 (en) * | 2017-06-16 | 2018-12-20 | Qualcomm Incorporated | Differentiated random access in new radio |
| RU2747278C1 (en) | 2017-11-28 | 2021-05-04 | Телефонактиеболагет Лм Эрикссон (Пабл) | Initiated measurement report view for wireless communication |
| EP4147359A1 (en) * | 2020-05-08 | 2023-03-15 | Telefonaktiebolaget LM ERICSSON (PUBL) | Versatile aas receiver |
| CN114390611B (en) * | 2020-10-22 | 2024-02-02 | 大唐移动通信设备有限公司 | Cell switching method, terminal, base station, device and storage medium |
| CN113473442A (en) * | 2021-07-05 | 2021-10-01 | 常熟市泓博通讯技术股份有限公司 | Millimeter wave access point roaming system |
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| WO2013017108A1 (en) | 2013-02-07 |
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