CN100574490C - The indoor covering implementation method of wireless signal - Google Patents
The indoor covering implementation method of wireless signal Download PDFInfo
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- CN100574490C CN100574490C CNB2005101327882A CN200510132788A CN100574490C CN 100574490 C CN100574490 C CN 100574490C CN B2005101327882 A CNB2005101327882 A CN B2005101327882A CN 200510132788 A CN200510132788 A CN 200510132788A CN 100574490 C CN100574490 C CN 100574490C
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Abstract
The invention discloses the indoor covering implementation method of wireless signal, be applied to Wideband Code Division Multiple Access (WCDMA) WCDMA system.The inventive method comprises: the indoor cell of carrying out indoor covering adopts two working frequency points, and a working frequency points is identical with the working frequency points of outdoor cell, and another working frequency points is different with the working frequency points of outdoor cell; Portable terminal in communication moves to outdoor cell from indoor cell, and the working frequency points of the indoor cell of current service is different with the outdoor cell working frequency points, then carries out minizone alien frequencies direct-cut operation an indoor cell with the outdoor cell next-door neighbour.Adopt the present invention can reduce the co-channel interference of indoor cell, the success rate of raising alien frequencies direct-cut operation reduces cutting off rate.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to Wideband Code Division Multiple Access (WCDMA) (Wide-band CodeDivision Multiple Address, WCDMA) the indoor covering implementation method of the wireless signal in the connecting system.
Background technology
The WCDMA technology is a most widely used technology in the 3G (Third Generation) Moblie technology.Be divided into three relatively independent units on the WCDMA overall system:
Wireless access network (Radio Access Network, RAN), wherein the global mobile communication land radio access web is UTRAN;
Core net (Core Network, CN);
Subscriber equipment (User Equipment, UE).
Wherein, wireless access network is responsible for handling all wireless relevant functions, and core net is responsible for handling audio call and data traffic exchange or is routed to external network, and subscriber equipment then provides operating platform for the information exchange between the user and the network equipment.Interface between UTRAN and the CN is called the Iu interface, and the interface between UTRAN and the UE is called the Uu interface.
UTRAN again can be by two parts: Node B (NodeB is in logic corresponding to the GSM base station) and base station controller (RNC).The major function of NodeB (this paper back general designation base station) is to carry out radio interface layer 1 to handle, as chnnel coding and interweave, rate-matched, spread spectrum etc.; Each place that can spread all over network coverage area usually is as urban district, suburbs and counties under the jurisdiction of a large city, rural area, mountain area.The major function of RNC is the Radio Resource of the whole UTRAN of control; Be usually located at the urban centre machine room, the local dozens or even hundreds of base station of centralized control.Interface between the two is called Iub interface, as shown in Figure 1.
Indoor covering is one of most important demand of WCDMA initial stage networking.Because there is penetration loss in building to wireless signal, outdoor base station is very limited to the level of coverage of indoor environment, particularly at large-scale office or business premises, is difficult to accomplish that the degree of depth covers.And very big characteristics of 3G technology are exactly: the user can use high-speed data service, speed can reach 384Kbps, when using high-speed downlink packet to insert that (High Speed Downlink Packet Access, HSDPA) during technology, speed can reach 10Mbps.And the high-end customer of use high-speed data service, major part will concentrate in the large-scale office or business premises.Therefore, realizing good indoor covering, covering, capacity and the service quality of high-quality is provided, will be the basic assurance of 3G technology success, also be the key subjects that WCDMA initial stage networking must solve.
Indoor covering comprises that the elevator of the covering in each room in the floor, high-rise building covers and elevator hall's covering etc.Usually can use indoor distributed antenna system.This system mainly is made up of multiple passive device, comprises multiplexer, feeder, antenna, power splitter, coupler etc.
Prior art one:
The solution that is applied to indoor covering has with the frequency solution.The characteristics of this scheme are: the working frequency points of indoor cell is the same with the working frequency points of outdoor cell, and indoor and outdoor is switched use with the frequency soft handover.As shown in Figure 2.Outdoor cell is numbered Cell0, and its working frequency points is f1, represents with Cell0-f1 in Fig. 2; Indoor cell is numbered Cell1, and its working frequency points also is f1, and is identical with the working frequency points of outdoor cell base station, represents with Cell1-f1 in Fig. 2.
The shortcoming of prior art one is as follows:
(1) the outdoor co-channel interference of high-rise floor is very strong:
Because floor is higher, usually far outdoor base station all can have direct wave to arrive, and causes that pilot pollution is serious, co-channel interference is very strong, speech quality is relatively poor.
(2) capacity of indoor cell and outdoor cell all can reduce:
In order to suppress the strong jamming of outdoor base station, common way is to improve the signal level of indoor cell and dispose the indoor and outdoor neighboring BS relationship.This has just reduced capacity indoor, outdoor cell on the one hand, has also increased the ratio of indoor and outdoor soft handover on the other hand.Particularly in the intensive place of building, if the indoor cell of every building all concerns that with the outdoor cell configuring adjacent cell capacity of that outdoor cell will reduce very seriously.
Prior art two:
The alien frequencies solution with the transition sub-district is adopted not in indoor covering.The characteristics of this scheme are: the working frequency points of indoor low layer floor coverage cell is identical with outdoor cell, and high-rise floor then uses alien-frequency district to cover; Indoor and outdoor is switched use with the frequency soft handover, then carries out minizone alien frequencies direct-cut operation at high-rise and low layer floor gap.As shown in Figure 3.Outdoor cell is numbered Cell0, and its working frequency points is f1, represents with Cell0-f1 in Fig. 3; The cell number of indoor low layer floor is Cell1, and its working frequency points also is f1, and is identical with the working frequency points of outdoor cell base station, represents with Cell1-f1 in Fig. 3; The cell number of indoor high-rise floor is Cell2, and its working frequency points is f2, and is different with the working frequency points of outdoor cell base station, represents with Cell2-f2 in Fig. 3.
The shortcoming of prior art two is: alien frequencies direct-cut operation success rate high-rise and the low layer floor is low, cutting off rate is high.
For the indoor covering solution of prior art two, the elevator the inside can use low layer Cell1-f1 sub-district to cover usually.Like this, when the user when low layer is taken elevator and is arrived high-rise floor and walk out elevator, the alien frequencies direct-cut operation will take place, but this moment, handover success rate was very low, this be because, the strong signal of Cell2-f2 can enter elevator when elevator door is opened, but the signal of elevator the inside Cell1-f1 is also more intense, can not start compact model; When the user walk out elevator enter the elevator hall after elevator door shut, this moment the Cell1-f1 Serving cell signal decay significantly suddenly, have little time to start compact model and carry out different-frequency measure and the alien frequencies direct-cut operation takes place.Therefore, under this all situation, converse as if the user, immediately call drop.
Prior art three:
The solution that is applied to indoor covering also has another not with the alien frequencies solution of transition sub-district.The characteristics of this scheme are: indoor low layer and high-rise floor all use the sub-district covering with the outdoor cell alien frequencies; The alien frequencies direct-cut operation is used in switching between indoor and outdoor, then carries out with the frequency direct-cut operation, as shown in Figure 4 at high-rise and low layer floor gap.Outdoor cell is numbered Cell0, and its working frequency points is f1, represents with Cell0-f1 in Fig. 4; The cell number of indoor low layer floor is Cell1, and its working frequency points is f2, and is different with the working frequency points of outdoor cell base station, represents with Cell1-f2 in Fig. 4; The cell number of indoor high-rise floor is Cell2, and its working frequency points is f2 also, represents with Cell2-f2 in Fig. 4.
The shortcoming of prior art three is: the building around the outdoor station are many, are difficult to outside the disposed chamber to indoor alien frequencies direct-cut operation parameter.
More high-rise building are arranged around the outdoor station usually, so just be difficult to outside the disposed chamber to indoor alien frequencies direct-cut operation parameter.For example: if dispose alien frequencies direct-cut operation parameter, can start compact model in lower pilot signal (CPICH RSCP) and carry out different-frequency measure, guarantee that this building alien frequencies direct-cut operation success rate is very high according to distant building; But for closer building, if the compression mode starting threshold setting is lower, may can not start compact model and carry out different-frequency measure, when the user from indoor when entering this building hall, because the very fast decay of outdoor cell signal, thereby have little time to take place the alien frequencies direct-cut operation, finally cause the conversation loss of conversing.
Summary of the invention
The indoor covering implementation method of wireless signal provided by the invention is disturbed the problem big, that alien frequencies direct-cut operation success rate is low in order to solve the indoor covering that exists in the prior art.
The inventive method comprises:
The indoor cell of carrying out indoor covering adopts two working frequency points, and a working frequency points is identical with the working frequency points of outdoor cell, and another working frequency points is different with the working frequency points of outdoor cell;
Portable terminal in communication moves to outdoor cell from indoor cell, and the working frequency points of the indoor cell of current service is different with the outdoor cell working frequency points, then carries out the alien frequencies direct-cut operation of indoor cell to outdoor cell in an indoor cell with outdoor cell next-door neighbour.
According to said method of the present invention, the working frequency points of described and outdoor cell next-door neighbour's indoor cell is identical with the working frequency points of outdoor cell; The working frequency points of all the other indoor cell is different with the working frequency points of outdoor cell;
Portable terminal in communication carries out the same frequency soft handover of outdoor cell to indoor cell earlier when outdoor cell moves to indoor cell; Carry out the alien frequencies direct-cut operation between the indoor cell again.
Portable terminal in communication is when indoor cell moves to outdoor cell, and the regional location place near outdoor cell in described and outdoor cell next-door neighbour's indoor cell carries out the alien frequencies direct-cut operation.
According to said method of the present invention, the indoor covering of skyscraper adopts indoor cell of a storey setting or the shared indoor cell of a plurality of floor to carry out indoor covering.
According to said method of the present invention, the mode that the elevator of skyscraper adopts the antenna by each floor elevator hall to penetrate elevator door is carried out signal and is covered, portable terminal in the communication during through different floor, carries out the same frequency soft handover of the different indoor cell of floor gap in elevator; Perhaps
The elevator of skyscraper also adopts single sub-district to cover, and the portable terminal in the communication does not carry out the sub-district and switches in elevator; Perhaps
The elevator of skyscraper adopts two indoor cell to cover in opposite directions at top layer and bottom, and the portable terminal in the communication carries out in described two minizones with soft handover frequently in elevator during through Zone switched between high level and the low layer.
According to said method of the present invention, when the portable terminal in the communication passes in and out elevator in floor,, then carry out the minizone with the frequency soft handover if the coverage cell and the elevator of floor are inequality in the coverage cell of current floor; Otherwise, do not carry out the sub-district and switch.
According to said method of the present invention, in indoor covering, also use one or more repeaters; The working frequency points of described repeater is identical with the working frequency points of described and outdoor cell next-door neighbour's indoor cell.
According to said method of the present invention, all indoor cell of carrying out indoor covering adopt the same coverage mode of alien-frequency district, and are identical with the working frequency points of outdoor cell with the working frequency points that covers one of them sub-district; Working frequency points with another sub-district that covers is different with the working frequency points of outdoor cell.
According to said method of the present invention, the portable terminal in communication carries out the same frequency soft handover of outdoor cell to indoor cell when outdoor cell moves to indoor cell; If the current indoor cell load identical with the outdoor cell working frequency points is heavy, then with the blind alien-frequency district that switches to covering of described portable terminal alien frequencies.
According to said method of the present invention, the portable terminal in communication if the working frequency points of the indoor cell of current service is identical with the outdoor cell working frequency points, then carries out the same frequency soft handover of indoor cell to outdoor cell when indoor cell moves to outdoor cell;
If the working frequency points of the indoor cell of current service is different with the outdoor cell working frequency points, then carry out the alien frequencies direct-cut operation of indoor cell to outdoor cell.
According to said method of the present invention, the mode that the elevator of skyscraper adopts the antenna by each floor elevator hall to penetrate elevator door is carried out signal and is covered, portable terminal in the communication during through different floor, carries out the same frequency soft handover of the different indoor cell of floor gap in elevator; Perhaps
The elevator of skyscraper adopts single sub-district to cover, and the portable terminal in the communication does not carry out the sub-district and switches in elevator; Perhaps
The elevator of skyscraper also adopts two indoor cell to cover in opposite directions at top layer and bottom, and then the portable terminal in the communication carries out in described two minizones with soft handover frequently in elevator during through Zone switched between high level and the low layer.
According to said method of the present invention, if the indoor cell load of current service is heavy, then with the blind alien-frequency district that switches to covering of described portable terminal alien frequencies.
According to said method of the present invention, when the portable terminal in the communication passes in and out elevator in floor,, then carry out the sub-district with the frequency soft handover if the coverage cell and the elevator of floor are inequality in the coverage cell of current floor; Otherwise, do not carry out the sub-district and switch.
According to said method of the present invention, when user terminal is set up professional the connection in indoor cell, carry out the following step:
A, radio network controller (RNC) judge whether the load of the indoor cell of current service has surpassed the access thresholding, if surpass access thresholding, execution in step B; Otherwise, set up professional for this user terminal by the indoor cell of current service;
B, RNC use the directed retry algorithm that the business of this user terminal is established to the same coverage cell of alien frequencies.
According to said method of the present invention, more indoor per two alien frequencies of RNC are with the load state of coverage cell, when two alien frequencies surpass preset threshold with the difference of the descending power load of coverage cell, with certain customers' terminal from the blind load lighter same coverage cell of alien frequencies relatively that switches to of the heavier sub-district alien frequencies of load.
According to said method of the present invention,, user terminal is preferentially resided in the indoor cell different with the outdoor cell working frequency points at the high-rise floor of indoor covering; At the low layer floor of indoor covering, user terminal is preferentially resided in the indoor cell identical with the outdoor cell working frequency points.
Describedly user terminal is resided in preferentially specific cell is selected by allocating cell and the reselecting parameters realization.
Beneficial effect of the present invention is as follows:
The present invention carries out minizone alien frequencies direct-cut operation an indoor cell with the outdoor cell next-door neighbour, has guaranteed handover success rate, and has effectively avoided the co-channel interference between indoor and outdoor cell.This be because:
According to specific implementation method one of the present invention, make the indoor cell of carrying out indoor covering be operated in two frequencies, wherein only have the working frequency points and the outdoor cell of the indoor cell that is close to outdoor cell identical, the working frequency points of all the other indoor cell all working frequency points with outdoor cell is different; Like this, the portable terminal in communication is from outdoor when moving to indoor porch, and what at first carry out is with soft handover frequently, the handover success rate height; When portable terminal further move to indoor after, finish the alien frequencies direct-cut operation between indoor cell; Alien frequencies direct-cut operation between this indoor cell can be optimized alien frequencies direct-cut operation relevant parameter at the signal distributions situation at scene, makes alien frequencies direct-cut operation success rate reach 100%.And the portable terminal in communication moves to when outdoor from indoor, by being controlled at indoor porch to outdoor switch area with indoor, directly carry out indoor to outdoor alien frequencies direct-cut operation, because can optimize alien frequencies direct-cut operation relevant parameter at the signal distributions situation at scene, therefore, this moment, alien frequencies direct-cut operation success rate can reach 100%.
In the said method one, the working frequency points of indoor coverage cell, the working frequency points and the outdoor cell of indoor cell that especially covers high-rise floor is inequality, has avoided the co-channel interference between indoor and outdoor cell effectively.
According to specific implementation method two of the present invention, the indoor cell of carrying out indoor covering adopts the same coverage mode of alien-frequency district, and is identical with the working frequency points of outdoor cell with the working frequency points that covers one of them sub-district; Working frequency points with another sub-district that covers is different with the working frequency points of outdoor cell.Portable terminal in communication moves to when indoor from outdoor, carries out the same frequency soft handover of outdoor cell to indoor cell; The handover success rate height.Portable terminal in communication moves to when outdoor from indoor, if the working frequency points of the indoor cell of current service is identical with the outdoor cell working frequency points, then carries out the same frequency soft handover of indoor cell to outdoor cell; The handover success rate height; If the working frequency points of the indoor cell of current service is different with the outdoor cell working frequency points, then carry out the alien frequencies direct-cut operation of indoor cell to outdoor cell; Can optimize alien frequencies direct-cut operation relevant parameter owing to indoor at the signal distributions situation at scene to outdoor alien frequencies direct-cut operation, therefore, this moment, alien frequencies direct-cut operation success rate can reach 100%.
In the said method two,, user terminal is preferentially resided in the indoor cell different with the outdoor cell working frequency points, avoided the co-channel interference between the indoor and outdoor cell of high-rise floor effectively at the high-rise floor of indoor covering; Low layer floor in indoor covering, user terminal is preferentially resided in the indoor cell identical with the outdoor cell working frequency points, make user terminal between indoor and outdoor, when mobile, carry out synchronous soft handover more, guarantee switch speed and handover success rate better.
Description of drawings
Fig. 1 is a global mobile communication land radio access web UTRAN networking schematic diagram;
Fig. 2 is prior art one an indoor covering solution schematic diagram;
Fig. 3 is prior art two indoor covering solution schematic diagrames;
Fig. 4 is prior art three indoor covering solution schematic diagrames;
Fig. 5 is indoor covering solution one schematic diagram of the present invention;
Fig. 6 is one of indoor covering solution two schematic diagrames of the present invention;
Fig. 7 is two of indoor covering solution two schematic diagrames of the present invention.
Embodiment
The indoor covering implementation method of wireless signal provided by the invention comprises:
The indoor cell of carrying out indoor covering adopts two working frequency points, and a working frequency points is identical with the working frequency points of outdoor cell, and another working frequency points is different with the working frequency points of outdoor cell;
Portable terminal in communication moves to outdoor cell from indoor cell, and the working frequency points of the indoor cell of current service is different with the outdoor cell working frequency points, then carries out minizone alien frequencies direct-cut operation an indoor cell with the outdoor cell next-door neighbour.
Below in conjunction with specific embodiment, said method of the present invention is described in detail.
Embodiment one:
Make the indoor cell of carrying out indoor covering be operated in two frequencies, wherein only have with outdoor cell next-door neighbour's indoor cell (for convenience of description, below be referred to as " transition sub-district ") working frequency points identical with outdoor cell, the working frequency points of all the other indoor cell all working frequency points with outdoor cell is different.
Cell operation frequency schematic diagram as shown in Figure 5.Outdoor cell is numbered Cell0, and its working frequency points is f1, represents with Cell0-f1 in Fig. 5; The transition cell number is Cell1, and its working frequency points also is f1, and is identical with the working frequency points of outdoor cell base station, represents with Cell1-f1 in Fig. 5; The cell number of indoor low layer floor is Cell2, and its working frequency points is f2, and is inequality with the working frequency points of outdoor cell, represents with Cell2-f2 in Fig. 5; The cell number of indoor high-rise floor is Cell3, and its working frequency points is f2 also, represents with Cell3-f2 in Fig. 5.
The characteristics of embodiment one are: high-rise and low layer floor all uses alien-frequency district to cover, when floor is low, (for example can only use an alien-frequency district, the Cell2-f2 sub-district is only arranged), when floor is higher, then can distribute two sub-districts to cover, the raising capacity is (in Fig. 5, used Cell2-f2 sub-district and Cell3-f2 sub-district), can also use plural sub-district to carry out indoor covering according to actual conditions, the present invention does not limit this.In the practical application, transition sub-district Cell1-f1 can be arranged on the Stall hall, make alien frequencies direct-cut operation district occur in the Stall hall, because can optimize alien frequencies direct-cut operation relevant parameter at the signal distributions situation at scene indoor, therefore, can be so that alien frequencies direct-cut operation success rate reaches 100%.
Concrete switchover policy is:
(1), the Stall hall is outdoor to indoor switchover policy:
User terminal enters the Stall hall at outdoor voice or the visual telephone service got through, and then finishes the same frequency soft handover of outdoor Cell0-f1 to indoor Cell1-f1 earlier; The user walks inward again, and the signal of indoor Cell1-f1 sub-district weakens gradually, finishes the alien frequencies direct-cut operation of indoor Cell1-f1 sub-district to the Cell2-f2 sub-district again.
(2), the Stall hall is indoor to outdoor switchover policy:
User terminal is got through voice or visual telephone service in the building, this moment, customer service remained on the indoor Cell2-f2 sub-district, can the alien frequencies direct-cut operation to indoor Cell1-f1; Move to when outdoor, finish indoor Cell2-f2 sub-district directly to the alien frequencies direct-cut operation of outdoor Cell0-f1 sub-district.
The present invention is in order effectively to avoid table tennis to switch, to guarantee into/go out that the switch area of both direction is separated in this purpose of not using indoor Cell2-f2 sub-district to switch to indoor Cell1-f1 sub-district.Like this, only need be controlled at the doorway, hall to outdoor switch area indoor, just there is no need again the switching that indoor Cell1-f1 sub-district is arrived in the Cell2-f2 sub-district in the generation chamber, can directly carry out the alien frequencies direct-cut operation of indoor Cell2-f2 sub-district fully to outdoor Cell0-f1 sub-district.Because this moment, the alien frequencies direct-cut operation from indoor to outdoor can be optimized alien frequencies direct-cut operation relevant parameter at the signal distributions situation at scene, can be so that alien frequencies direct-cut operation success rate reaches 100%.
(3), elevator switchover policy:
Elevator and interior covering can have multiple scheme:
Scheme one: directly use the antenna of This floor elevator hall to penetrate elevator door and cover.
User terminal in this moment communication in elevator high level and the low layer floor between when moving up and down with elevator, will take place with soft handover frequently;
This is because the coverage cell in the elevator is consistent with the coverage cell with floor, when user terminal moves up and down with elevator in elevator, is equal at different floor gaps and moves; When the coverage cell of different floors not simultaneously, need carry out the same frequency soft handover of minizone.
For example: suppose that the 1-10 layer uses Cell2-f2 to cover among Fig. 5, the 11-20 layer uses Cell3-f2 to cover, the switch area of floor gap is positioned at the 9-12 layer, at this moment, be in user terminal in the communication and in elevator, can take place during through the 9-12 layer, in elevator, the sub-district then can not take place during through 1-8 layer, 13-20 layer and switch with soft handover frequently.
Scheme two: use plate antenna or leaky cable to carry out the covering of single sub-district at elevator top layer or bottom.
This moment, elevator was positioned at same sub-district when moving up and down all the time in elevator, after being in user terminal in the communication and entering elevator, the sub-district can not take place switch.
Scheme three: use plate antenna or leaky cable that the signal of two sub-districts is got the covering elevator in opposite directions at elevator top layer and bottom.
At this moment, when elevator when the low layer floor gap moves, the coverage cell in the elevator should be the indoor cell that is arranged on the elevator bottom; When the portable terminal in the communication only passes through the low layer floor position in elevator, the sub-district can not take place switch; When elevator when the high-rise building interlayer moves, the coverage cell in the elevator should be the indoor cell that is arranged on elevator and top layer; When the portable terminal in the communication only passes through high-rise floor position in elevator, the sub-district can not take place switch; Have only when the portable terminal in the communication in elevator during through Zone switched between high level and the low layer, just can between the indoor cell of the indoor cell of elevator bottom and elevator top layer, carry out with the frequency soft handover.
(4), elevator hall's switchover policy:
When the portable terminal in the communication passes in and out elevator in floor (portable terminal enters in the elevator or in elevator from the elevator hall and comes out to arrive the elevator hall), if the coverage cell (also being the coverage cell of same floor elevator hall) of floor is inequality in the coverage cell at current floor position place with elevator, then carry out the sub-district with the frequency soft handover; Otherwise, do not carry out the sub-district and switch.
According to three kinds of different coverage conditions of above-mentioned elevator, be respectively described below below:
(1), elevator directly uses the antenna of elevator hall to penetrate elevator door to cover.
In this case, therefore the sub-district, when the portable terminal in the communication passes in and out elevator in floor, can not take place and switch with consistent with the coverage cell of floor elevator hall in the coverage cell in the elevator.
Two, use plate antenna or leaky cable to carry out the covering of single sub-district at elevator top layer or bottom.
In this case, whether carrying out the sub-district when portable terminal in the communication passes in and out elevator in floor switches, whether the coverage cell and the coverage cell of elevator at current floor position place that depend on current floor are same indoor cell, if same indoor cell covers, the sub-district then can not take place switch; If different indoor cell covers, then need to carry out the sub-district with soft switch frequently.
For example: suppose that the 1-10 layer uses Cell2-f2 to cover among Fig. 5, the 11-20 layer uses Cell3-f2 to cover, and the switch area of floor gap is positioned at the 9-12 layer, and the coverage cell that elevator adopts is the indoor Cell2-f2 sub-district of low layer floor; When portable terminal advance at the 1-8 layer/when going out elevator, the coverage cell of floor and the coverage cell of elevator are same indoor Cell2-f2 sub-district, the sub-district can not take place switch;
When portable terminal advance at the 9-12 layer/when going out elevator, the coverage cell of floor is in the Zone switched of indoor Cell2-f2 sub-district and Cell3-f2 sub-district, the sub-district will take place switch;
When portable terminal advance at the 13-20 layer/when going out elevator, the coverage cell of floor is indoor Cell3-f2 sub-district, the coverage cell of elevator is indoor Cell2-f2 sub-district, therefore, is bound to take place the sub-district and switches.
Three, use plate antenna or leaky cable that the signal of two sub-districts is got the covering elevator in opposite directions at elevator top layer and bottom.
In such cases, the portable terminal in the communication advances/whether takes place when going out elevator the same frequency soft handover of minizone, adopts single sub-district coverage condition similar with elevator.If the coverage cell of floor and elevator are inequality in the coverage cell at current floor position place, then need to carry out the sub-district with the frequency soft handover; Otherwise, do not carry out the sub-district and switch.
Be example still, suppose that the sub-district of elevator top layer setting is identical with the coverage cell of high-rise floor, be indoor Cell3-f2 sub-district with above-mentioned floor structure; The sub-district that elevator and bottom are provided with is identical with the coverage cell of low layer floor, is indoor Cell2-f2 sub-district; Zone switched is the 9-12 layer;
When portable terminal advance at the 1-8 layer/when going out elevator, the coverage cell of floor and the coverage cell of elevator are same indoor Cell2-f2 sub-district, the sub-district can not take place switch;
When portable terminal advance at the 9-12 layer/when going out elevator, the coverage cell of floor and the coverage cell of elevator are in the Zone switched of indoor Cell2-f2 sub-district and Cell3-f2 sub-district equally, the sub-district will take place in this case switch;
When portable terminal advance at the 13-20 layer/when going out elevator, the coverage cell of floor is indoor Cell3-f2 sub-district, the coverage cell of elevator also is indoor Cell3-f2 sub-district, therefore, the sub-district can not take place switch.
Usually only be used for the transition use that indoor and outdoor is switched because the present invention is arranged on the Cell1-f1 sub-district, transition sub-district in Stall hall, therefore, capacity can relatively be wasted.And general large-scale office or business premises exists underground garage or market place builet below the ground usually, and these occasions are relatively sealing spatially, is suitable for using equipment such as optical fiber repeater to carry out signal and covers.In order to make full use of the capacity of transition of the present invention sub-district, the repeater can be connected on the transition sub-district, make repeater and transition sub-district use same working frequency points, make full use of the capacity of this transition sub-district, can inside and outside underground garage, take place simultaneously with the frequency soft handover.
Embodiment two:
The indoor cell of carrying out indoor covering adopts the same coverage mode of alien-frequency district, and is identical with the working frequency points of outdoor cell with the working frequency points that covers one of them sub-district; Working frequency points with another sub-district that covers is different with the working frequency points of outdoor cell.
Cell operation frequency schematic diagram as shown in Figure 6 and Figure 7.Fig. 6 represents the floor indoor covering scheme more after a little while of building, and wherein: outdoor cell is numbered Cell0, and its working frequency points is f1, represents with Cell0-f1 in Fig. 6; Indoor cell is numbered Cell1, and its working frequency points is f1, represents with Cell1-f1 in Fig. 6; Another alien frequencies is Cell2 with cell number in the covering chamber, and its working frequency points is f2, represents with Cell2-f2 in Fig. 6.
Fig. 7 represents the floor indoor covering scheme more for a long time of building, and wherein: outdoor cell is numbered Cello, and its working frequency points is f1, represents with Cell0-f1 in Fig. 7; Indoor cell is numbered Cell1, and its working frequency points is f1, represents with Cell1-f1 in Fig. 7; Another alien frequencies is Cell2 with cell number in the covering chamber, and its working frequency points is f2, represents with Cell2-f2 in Fig. 7; Indoor cell is numbered Cell3, and its working frequency points is f1, represents with Cell3-f1 in Fig. 7; Another alien frequencies is Cell4 with cell number in the covering chamber, and its working frequency points is f2, represents with Cell4-f2 in Fig. 7.
The characteristics of embodiment two are: high-rise and low layer floor all uses two alien frequencies to cover with the sub-district that covers, and can only use two alien frequencies with the sub-district that covers, as shown in Figure 6 at the total number of floor levels of building more after a little while; More then can distribute four sub-districts to cover at the total number of floor levels of building, thus the raising capacity, as Cell1-f1/Cell2-f2 sub-district among Fig. 7 and Cell3-f1/Cell4-f2 sub-district.According to actual conditions, can also distribute more indoor coverage cell, the present invention does not limit this.
Concrete switchover policy is as follows:
(1), the Stall hall is outdoor to indoor switchover policy:
Portable terminal enters the Stall hall at outdoor voice or the visual telephone service got through, and then finishes the same frequency soft handover of outdoor Cell0-f1 sub-district to indoor Cell1-f1 sub-district earlier; If indoor Cell1-f1 cell load is heavier, then RNC can start the alien frequencies load balancing algorithm, portable terminal from the blind Cell2-f2 that switches to of Cell1-f1 alien frequencies.The blind switching of alien frequencies refers to and does not need to start compact model and carry out different-frequency measure, and RNC direct command portable terminal carries out the alien frequencies direct-cut operation.Because indoor Cell1-f1 sub-district and Cell2-f2 sub-district are the same coverage cell of alien frequencies, this success rate for switching is very high, can reach 100%.
(2), the Stall hall is indoor to outdoor switchover policy:
Portable terminal is at indoor voice or the visual telephone service got through, when if the current service cell of portable terminal is indoor Cell1-f1 sub-district (business is based upon on the Cell1-f1 sub-district), then, the user finishes the same frequency soft handover of indoor Cell1-f1 sub-district when outdoor to outdoor Cell0-f1 when moving to; If business is based upon on the indoor Cell2-f2 sub-district, then, the user finishes the alien frequencies direct-cut operation of indoor Cell2-f2 sub-district when outdoor to outdoor Cell0-fl when moving to, since can optimize alien frequencies direct-cut operation relevant parameter at the signal distributions situation at scene, can be so that alien frequencies direct-cut operation success rate reaches 100%.
(3), elevator switchover policy:
Elevator and interior covering can have multiple scheme:
Scheme one: directly use the antenna of floor elevator hall to penetrate elevator door and carry out elevator and cover.
User terminal in this moment communication in elevator high level and the low layer floor between when moving up and down with elevator, will take place with soft handover frequently;
This is because the coverage cell in the elevator is consistent with the coverage cell with floor, when user terminal moves up and down with elevator in elevator, is equal at different floor gaps and moves; When the coverage cell of different floors not simultaneously, need carry out the same frequency soft handover of minizone.
For example: suppose that the 1-10 layer uses Cell1-f1/Cell2-f2 to cover among Fig. 7, the 11-20 layer uses Cell3-f1/Cell4-f2 to cover, the switch area of floor gap is positioned at the 9-12 layer, at this moment, being in user terminal in the communication can take place during through the 9-12 layer in elevator with soft handover frequently, promptly between Cell1-f1 sub-district and Cell3-f1 sub-district, switch, perhaps between Cell2-f2 sub-district and Cell4-f2 sub-district, switch; The sub-district then can not take place during through 1-8 layer, 13-20 layer and switch in the portable terminal in the communication in elevator.The present invention does not dispose the neighboring BS relationship between the levels alien-frequency district, guarantees only to take place with the frequency soft handover; If the load of current service cell is heavier, then can adopt the alien frequencies load balancing algorithm to trigger with layer by RNC with the blind switching of alien frequencies between the alien-frequency district that covers.
Scheme two: use plate antenna or leaky cable to carry out the covering of single sub-district at elevator top layer or bottom.
This moment, elevator was positioned at same sub-district when moving up and down all the time in elevator, after being in user terminal in the communication and entering elevator, the sub-district can not take place switch.If the load of current service cell is heavier, then can be by the blind switching of alien frequencies between the alien-frequency district that RNC adopts the alien frequencies load balancing algorithm to trigger and elevator list sub-district covers together.
Scheme three: use plate antenna or leaky cable that the signal of two sub-districts is got the covering elevator in opposite directions at elevator top layer and bottom.
At this moment, when elevator when the low layer floor gap moves, the coverage cell in the elevator should be the indoor cell that is arranged on the elevator bottom; When the portable terminal in the communication only passes through the low layer floor position in elevator, the sub-district can not take place switch; When elevator when the high-rise building interlayer moves, the coverage cell in the elevator should be the indoor cell that is arranged on the elevator top layer; When the portable terminal in the communication only passes through high-rise floor position in elevator, the sub-district can not take place switch; Have only when the portable terminal in the communication in elevator during through Zone switched between high level and the low layer, just can between the indoor cell of the indoor cell of elevator bottom and elevator top layer, carry out with the frequency soft handover.The present invention does not dispose the neighboring BS relationship between two alien-frequency districts of elevator, guarantees only to take place with the frequency soft handover; If the load of current service cell is heavier, then can adopt the alien frequencies load balancing algorithm to trigger by RNC with the blind switching of alien frequencies between the alien-frequency district that covers.
(4), elevator hall's switchover policy:
When the portable terminal in the communication passes in and out elevator in floor (portable terminal enters in the elevator or in elevator from the elevator hall and comes out to arrive the elevator hall), if the coverage cell (also being the coverage cell of same floor elevator hall) of floor is inequality in the coverage cell of current floor with elevator, then carry out the sub-district with the frequency soft handover; Otherwise, do not carry out the sub-district and switch.
According to three kinds of different coverage conditions of above-mentioned elevator, be respectively described below below:
One, elevator directly uses the antenna of elevator hall to penetrate elevator door to cover.
In this case, therefore the sub-district, when the portable terminal in the communication passes in and out elevator in floor, can not take place and switch with consistent with the coverage cell of floor elevator hall in the coverage cell in the elevator.
Two, use plate antenna or leaky cable to carry out the covering of single sub-district at elevator top layer or bottom.
In this case, whether carrying out the sub-district when portable terminal in the communication passes in and out elevator in floor switches, whether the coverage cell and the coverage cell of elevator at current floor position place that depend on current floor are same indoor cell, if same indoor cell covers, the sub-district then can not take place switch; If different indoor cell covers, then need to carry out the sub-district with soft switch frequently.
For example: suppose that the 1-10 layer uses the Cell1-f1/Cell2-f2 sub-district to cover among Fig. 7, the 11-20 layer uses the Cell3-f1/Cell4-f2 sub-district to cover, the switch area of floor gap is positioned at the 9-12 layer, and the coverage cell that elevator adopts is the indoor Cell1-f1/Cell2-f2 sub-district of low layer floor; When portable terminal advance at the 1-8 layer/when going out elevator, the coverage cell of floor and the coverage cell of elevator are same indoor Cell1-f1/Cell2-f2 sub-district, the sub-district can not take place switch;
When portable terminal advance at the 9-12 layer/when going out elevator, the coverage cell of floor is in the Zone switched of indoor Cell1-f1/Cell2-f2 sub-district and Cell3-f1/Cell4-f2 sub-district, the sub-district will take place switch;
When portable terminal advance at the 13-20 layer/when going out elevator, the coverage cell of floor is indoor Cell3-f1/Cell4-f2 sub-district, the coverage cell of elevator is indoor Cell1-f1/Cell2-f2 sub-district, therefore, is bound to take place the same frequency soft handover between the sub-district.
Three, use plate antenna or leaky cable that the signal of two sub-districts is got the covering elevator in opposite directions at elevator top layer and bottom.
In such cases, the portable terminal in the communication advances/whether takes place when going out elevator the same frequency soft handover of minizone, adopts single sub-district coverage condition similar with elevator.If the coverage cell of floor and elevator are inequality in the coverage cell at current floor position place, then need to carry out the sub-district with the frequency soft handover; Otherwise, do not carry out the sub-district and switch.
Be example still, suppose that the sub-district of elevator top layer setting is identical with the coverage cell of high-rise floor, be indoor Cell3-f1/Cell4-f2 sub-district with above-mentioned floor structure; The sub-district that the elevator bottom is provided with is identical with the coverage cell of low layer floor, is indoor Cell1-f1/Cell2-f2 sub-district; Zone switched is the 9-12 layer;
When portable terminal advance at the 1-8 layer/when going out elevator, the coverage cell of floor and the coverage cell of elevator all are the Cell1-f1/Cell2-f2 sub-district, the sub-district can not take place switch;
When portable terminal advance at the 9-12 layer/when going out elevator, the coverage cell of floor and the coverage cell of elevator are in the Zone switched of indoor Cell1-f2/Cell2-f2 and Cell3-f1/Cell4-f2 sub-district equally, the sub-district will take place in this case switch;
When portable terminal advance at the 13-20 layer/when going out elevator, the coverage cell of floor is indoor Cell3-f1/Cell4-f2 sub-district, the coverage cell of elevator also is indoor Cell3-f1/Cell4-f2 sub-district, therefore, the sub-district can not take place switch.
In the embodiment of the invention two, when business is set up in the indoor user request, RNC adopts the access algorithm to judge that whether the load of current service cell has surpassed the access thresholding, if surpassed the access thresholding, then sets up professional at the current service cell refusal for this user terminal; RNC uses alien frequencies directed retry algorithm that this user's business is established to the same coverage cell of alien frequencies.Alien frequencies directed retry algorithm comprises Radio Resource control (RadioResource Control, RRC) alien frequencies directed retry algorithm and radio bearer (Radio Bearer, RB) directed retry algorithm.
When two alien frequencies change with the loading condition of coverage cell, RNC by the alien frequencies load balancing algorithm with certain customers from the higher sub-district of duty ratio the blind same coverage cell of the lower alien frequencies of duty ratio that switches to.The load height can be weighed with the descending power load difference of coverage cell by two alien frequencies; When two alien frequencies surpass a pre-set threshold with the descending power load difference of coverage cell, think that two alien frequencies are bigger with the cell load weight great disparity that covers, at this moment, RNC will start the alien frequencies load balancing algorithm with certain customers from the higher sub-district of duty ratio the blind same coverage cell of the lower alien frequencies of duty ratio that switches to.
In the embodiment of the invention two,,, therefore, need preferentially portable terminal to be resided on the Cell4-f2 sub-district because the outdoor station co-channel interference is bigger at high-rise floor.At the low layer floor, switch more the generation and portable terminal preferentially need be resided on the Cell1-f1 sub-district with the frequency soft handover in order to guarantee indoor and outdoor.Above-mentioned preferential resident strategy can be realized by suitable allocating cell selection and reselecting parameters, preferentially reside on the Cell4-f2 such as offset parameter (Qoffset) guiding terminal that increases between two alien-frequency districts.
In sum, in the embodiments of the invention one,, therefore, be not subjected to the interference of outdoor station because high-rise floor has used alien frequencies.Use the transition sub-district simultaneously, improved alien frequencies direct-cut operation success rate greatly, reduced cutting off rate.
Because embodiments of the invention one have effectively been avoided the interference of outdoor station, therefore, the power of common signal channel does not need to dispose too greatly, has improved cell capacity effectively; Simultaneously, high-rise sub-district not can with outdoor station generation soft handover, do not take the capacity of outdoor station yet.
In the embodiments of the invention two, the interference of high-rise floor is little, capacity is high.Because high-rise floor has used alien frequencies, by configuration alien frequencies load balance parameter, can allow the load of alien-frequency district remain on the level that is higher than the co-frequency cell load, select and reselecting parameters by allocating cell, allow idle portable terminal preferentially reside in alien-frequency district, therefore, be subjected to the interference of outdoor station less, capacity is higher.
The embodiment of the invention two handover success rate height, cutting off rate are low.Under the indoor mobile situation, only take place to guarantee very high handover success rate with the frequency soft handover; During stationary indoors, the alien frequencies load balance may take place, this algorithm can trigger the blind switching of alien frequencies, because two alien-frequency districts are with covering, so handover success rate is very high; Indoor to outdoor the alien frequencies direct-cut operation may take place, because can optimize alien frequencies direct-cut operation relevant parameter at the signal distributions situation at scene, can be so that alien frequencies direct-cut operation success rate reaches 100%.
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, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (17)
1, the indoor covering implementation method of a kind of wireless signal is applied to Wideband Code Division Multiple Access (WCDMA) WCDMA system, it is characterized in that, comprising:
The indoor cell of carrying out indoor covering adopts two working frequency points, and a working frequency points is identical with the working frequency points of outdoor cell, and another working frequency points is different with the working frequency points of outdoor cell;
Portable terminal in communication moves to outdoor cell from indoor cell, and the working frequency points of the indoor cell of current service is different with the outdoor cell working frequency points, then carries out the alien frequencies direct-cut operation of indoor cell to outdoor cell in an indoor cell with outdoor cell next-door neighbour.
2, the method for claim 1 is characterized in that, the working frequency points of described and outdoor cell next-door neighbour's indoor cell is identical with the working frequency points of outdoor cell; The working frequency points of all the other indoor cell is different with the working frequency points of outdoor cell;
Portable terminal in communication carries out the same frequency soft handover of outdoor cell to indoor cell earlier when outdoor cell moves to indoor cell; Carry out the alien frequencies direct-cut operation between the indoor cell again.
3, method as claimed in claim 2 is characterized in that, the portable terminal in communication is when indoor cell moves to outdoor cell, and the regional location place near outdoor cell in described and outdoor cell next-door neighbour's indoor cell carries out the alien frequencies direct-cut operation.
4, method as claimed in claim 3 is characterized in that, the indoor covering of skyscraper adopts indoor cell of a storey setting or the shared indoor cell of a plurality of floor to carry out indoor covering.
5, method as claimed in claim 4, it is characterized in that, the mode that the elevator of skyscraper adopts the antenna by each floor elevator hall to penetrate elevator door is carried out signal and is covered, portable terminal in the communication during through different floor, carries out the same frequency soft handover of the different indoor cell of floor gap in elevator; Perhaps
The elevator of skyscraper adopts single sub-district to cover, and the portable terminal in the communication does not carry out the sub-district and switches in elevator; Perhaps
The elevator of skyscraper adopts two indoor cell to cover in opposite directions at top layer and bottom, and the portable terminal in the communication carries out in described two minizones with soft handover frequently in elevator during through Zone switched between high level and the low layer.
6, method as claimed in claim 4 is characterized in that, when the portable terminal in the communication passes in and out elevator in floor, if the coverage cell and the elevator of floor are inequality in the coverage cell of current floor, then carries out the minizone with the frequency soft handover; Otherwise, do not carry out the sub-district and switch.
7, as the described method of any claim of claim 1-6, it is characterized in that, in indoor covering, also use one or more repeaters; The working frequency points of described repeater is identical with the working frequency points of described and outdoor cell next-door neighbour's indoor cell.
8, the method for claim 1 is characterized in that, all indoor cell of carrying out indoor covering adopt the same coverage mode of alien-frequency district, and are identical with the working frequency points of outdoor cell with the working frequency points that covers one of them sub-district; Working frequency points with another sub-district that covers is different with the working frequency points of outdoor cell.
9, method as claimed in claim 8 is characterized in that, the portable terminal in communication carries out the same frequency soft handover of outdoor cell to indoor cell when outdoor cell moves to indoor cell; If the current indoor cell load identical with the outdoor cell working frequency points is heavy, then with the blind alien-frequency district that switches to covering of described portable terminal alien frequencies.
10, method as claimed in claim 9, it is characterized in that, portable terminal in communication if the working frequency points of the indoor cell of current service is identical with the outdoor cell working frequency points, then carries out the same frequency soft handover of indoor cell to outdoor cell when indoor cell moves to outdoor cell;
If the working frequency points of the indoor cell of current service is different with the outdoor cell working frequency points, then carry out the alien frequencies direct-cut operation of indoor cell to outdoor cell.
11, method as claimed in claim 10, it is characterized in that, the mode that the elevator of skyscraper adopts the antenna by each floor elevator hall to penetrate elevator door is carried out signal and is covered, portable terminal in the communication during through different floor, carries out the same frequency soft handover of the different indoor cell of floor gap in elevator; Perhaps
The elevator of skyscraper adopts single sub-district to cover, and the portable terminal in the communication does not carry out the sub-district and switches in elevator; Perhaps
The elevator of skyscraper adopts two indoor cell to cover in opposite directions at top layer and bottom, and then the portable terminal in the communication carries out in described two minizones with soft handover frequently in elevator during through Zone switched between high level and the low layer.
12, method as claimed in claim 11 is characterized in that, if the indoor cell load of current service is heavy, then with the blind alien-frequency district that switches to covering of described portable terminal alien frequencies.
13, method as claimed in claim 10 is characterized in that, when the portable terminal in the communication passes in and out elevator in floor, if the coverage cell and the elevator of floor are inequality in the coverage cell of current floor, then carries out the sub-district with the frequency soft handover; Otherwise, do not carry out the sub-district and switch.
14, method as claimed in claim 8 is characterized in that, when user terminal is set up professional the connection in indoor cell, carries out the following step:
A, radio network controller (RNC) judge whether the load of the indoor cell of current service has surpassed the access thresholding, if surpass access thresholding, execution in step B; Otherwise, set up professional for this user terminal by the indoor cell of current service;
B, RNC use the directed retry algorithm that the business of this user terminal is established to the same coverage cell of alien frequencies.
15, method as claimed in claim 8, it is characterized in that, more indoor per two alien frequencies of RNC are with the load state of coverage cell, when two alien frequencies surpass preset threshold with the difference of the descending power load of coverage cell, with certain customers' terminal from the blind load lighter same coverage cell of alien frequencies relatively that switches to of the heavier sub-district alien frequencies of load.
16, method as claimed in claim 8 is characterized in that, at the high-rise floor of indoor covering, user terminal is preferentially resided in the indoor cell different with the outdoor cell working frequency points; At the low layer floor of indoor covering, user terminal is preferentially resided in the indoor cell identical with the outdoor cell working frequency points.
17, method as claimed in claim 16 is characterized in that, describedly user terminal is resided in preferentially specific cell is selected by allocating cell and the reselecting parameters realization.
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| CN101232713B (en) * | 2007-09-20 | 2011-01-12 | 华为技术有限公司 | Device and method for implementing boundary area hard handoff |
| CN101252786B (en) * | 2008-03-27 | 2011-04-06 | 华为技术有限公司 | Base station, wireless communication system and switch method |
| CN101715196B (en) * | 2008-09-29 | 2012-05-23 | 杰脉通信技术(上海)有限公司 | Method for establishing single-carrier indoor base station |
| CN101990212B (en) * | 2009-08-04 | 2013-08-07 | 中兴通讯股份有限公司 | Method and system for networking indoor and outdoor distribution systems |
| CN101640893B (en) * | 2009-09-09 | 2011-12-21 | 中国电信股份有限公司 | Method and system for solving problem of pilot pollution of code division multiple access signals in high-rise building |
| CN101801032B (en) * | 2009-12-31 | 2014-03-19 | 中兴通讯股份有限公司 | Indoor access method and communication system |
| CN103220676B (en) * | 2013-04-09 | 2015-08-19 | 京信通信系统（中国）有限公司 | A kind of frequency multiplexing method, equipment and system |
| CN104469865A (en) * | 2014-11-28 | 2015-03-25 | 大唐移动通信设备有限公司 | Target cell configuration method and device |
| CN104463625B (en) * | 2014-12-01 | 2018-07-20 | 中国联合网络通信集团有限公司 | Realize the method for pushing and system of big screen information in elevator |
| CN105142117A (en) * | 2015-08-14 | 2015-12-09 | 广东公信智能会议股份有限公司 | Wireless simultaneous interpretation system applied to large gathering |
| CN108271196B (en) * | 2016-12-31 | 2021-03-05 | 中国移动通信集团福建有限公司 | Method, equipment and system for positioning high-level signal drift |
| CN112437446B (en) * | 2020-11-09 | 2022-11-01 | 中国联合网络通信集团有限公司 | Method and device for distinguishing multi-layer cell division cells, electronic equipment and storage medium |
| CN113055077B (en) * | 2021-03-12 | 2022-04-05 | 中国人民解放军63920部队 | Uplink carrier wave adding and adjusting self-adaptive adjusting method and device for near-earth space measurement and control network |
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