CN101534512B - Communication system and communication method thereof - Google Patents
Communication system and communication method thereof Download PDFInfo
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- CN101534512B CN101534512B CN2008101017413A CN200810101741A CN101534512B CN 101534512 B CN101534512 B CN 101534512B CN 2008101017413 A CN2008101017413 A CN 2008101017413A CN 200810101741 A CN200810101741 A CN 200810101741A CN 101534512 B CN101534512 B CN 101534512B
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Abstract
The invention relates to a communication system and a communication method thereof. The communication system comprises: at least two communication cells, wherein at least one of the at least two communication cells comprises a central base station, at least one optical cable or electric cable and at least one edge-orientated antenna unit and is connected with the central base station by the at least one optical cable or electric cable. A mobile terminal positioned in the service area of the at least one edge-orientated antenna unit sends a resource request message to the central base station by the at least one edge-orientated antenna unit; and the communication cell transfers the data sent by the central base station to the mobile terminal. The adoption of the communication system and the communication method has flexible resource distribution mode and causes no waste of resources. In addition, the adoption of the system and the resource distribution mode can improve signal quality in the cell and obviously increase the capacity of the communication system.
Description
Technical field
The present invention relates to wireless communication technology, particularly relate to a kind of communication system and communication means thereof.
Background technology
Cellular communication system is a kind of sub-district system mobile communication system.Its characteristics are for to be divided into a plurality of sub-districts to whole large-scale wireless service areas, and each sub-district is provided with a base station, for a plurality of portable terminals in the sub-district provide service.Characteristics have obtained extensive use at wireless communication field to cellular communication system because its availability of frequency spectrum height, power system capacity be big etc.
Common a kind of cellular-communication-system structure as shown in Figure 1, each center of housing estate position is placed with three directional antennas, each covers this cell range with 120 degree sectors, that is, 3 sub-district a, b and c are divided into 9 scopes that directional antenna covered respectively among Fig. 1,9 directional antennas identify respectively with a1, a2, a3, b1, b2, b3, c1, c2 and c3, each covers with center of housing estate separately is one the 120 degree sector in the center of circle, and wherein directional antenna a1, a2, a3 and b1, b2, b3 and c1, c2, c3 adhere to sub-district a, b and c separately.Because the unbalanced and dynamic change of loading condition of mobile communication in the sub-district, for service being provided for each portable terminal, need the base station dynamically to be each directional antenna Resources allocation, for example, to belong to the communication resource in the sub-district and be divided into a plurality of subchannels, and be that the heavier directional antenna of coverage sector internal burden distributes than multi sub-channel.Thus, the assigned subchannel of corresponding directional antenna and inconsistent in each sub-district, at this moment, the adjacent directional antenna of neighbor cell may use same asset.As shown in fig. 1, directional antenna a1 adjacent one another are has used identical resource with directional antenna c2, when directional antenna a1 uses this resource to provide service for the portable terminal A in its coverage sector, because the sector that A is also covered near directional antenna c2, and directional antenna c2 also transmits by this resource, so directional antenna c2 can cause interference to A.
For fear of this situation, just need to coordinate mutually between neighbor cell, between the pairing directional antenna of adjacent sectors, do not use same asset, in this case, cause the dumb of resource allocation.
In addition, as shown in Figure 1,, all can only provide better service in three sub-district a, b and the c for the portable terminal nearer from the base station because signal is with the decay of distance, and relatively poor near the signal quality of the portable terminal of cell edge.Can cause cell edge portable terminal poor signal quality like this, signal to noise ratio is lower, so cellular communication system can only adopt the signal modulation system of lower-order, this moment, cellular communication system edge capacity was low, was difficult to satisfy the power system capacity requirement that improves day by day in the cellular communication system.
Summary of the invention
In view of this, the purpose of the embodiment of the invention is to provide a kind of communication system and communication means thereof, relatively poor with the phase mutual interference, the cell edge portable terminal signal quality that solve adjacent sectors between neighbor cell, as to be difficult to improve power system capacity problem.
In order to realize above-mentioned technical problem, on the one hand, provide a kind of communication system, comprising:
At least two communication cells, wherein at least one described at least two communication cell comprises:
Center base station;
At least one optical cable or cable;
At least one edge-oriented antenna element is connected with described center base station by described at least one optical cable or cable, by described at least one edge-oriented antenna element, is in the portable terminal in described at least one edge-oriented antenna element service area;
Send resource request information to described center base station;
The data of transmitting described center base station transmission are to described portable terminal;
Wherein, center base station comprises:
Resource allocation unit is used for Radio Resource is distributed, and generates a resource allocation result;
Signal processing unit is used for according to described resource allocation result first signal of communication being handled, and generates the second communication signal;
Signal conversion unit, being used for described second communication conversion of signals is the 3rd signal;
Each described at least one edge-oriented antenna element comprises:
The signal inverse transformer is used for receiving the 3rd signal by described at least one optical cable or cable, and described the 3rd conversion of signals is become described second communication signal;
Radio frequency unit is connected with described signal inverse transformer, is used for described second communication signal is handled, and generates four-way letter signal;
Antenna is connected with described radio frequency unit, is used to receive described four-way letter signal, and described four-way letter signal is sent to described portable terminal.
Preferably, described center base station also comprises: center antenna.
Preferably, described center antenna is specially: at least one omnidirectional antenna links to each other with described center base station.
Preferably, described center antenna is specially: at least one directional antenna links to each other with described center base station.
Preferably, described center antenna is specially: at least one smart antenna links to each other with center base station.
Preferably, described the 3rd signal is specially: the light signal or the signal of telecommunication.
Preferably, the adjacent described antenna of neighbor cell is placed on same position, and between neighbor cell adjacent described antenna transmit direction away from each other.
Preferably, the described number of antennas that belongs to same sub-district is at least 3, and 3 that are in described sub-district apart from one another by the summit of opening, and points to the center of this sub-district respectively with 120 degree sectors, correspondingly, three of three neighbor cells described antennas are arranged on the intersection of described three neighbor cells.
On the other hand, also provide a kind of communication means, may further comprise the steps:
Center base station is distributed cell radio resource, generates a resource allocation result;
According to described resource allocation result, first signal of communication is handled, generate the second communication signal;
Described second communication conversion of signals is become the 3rd signal, and described the 3rd signal is sent to edge-oriented antenna;
Edge-oriented antenna receives described the 3rd signal, and converts described the 3rd signal to described secondary signal by at least one optical cable or cable;
Described secondary signal is handled generation the 4th signal;
Receive and send described the 4th signal.
Preferably, described center base station is distributed cell radio resource and be may further comprise the steps:
Determine the coverage of at least two edge-oriented antennas and center antenna;
Add up the interior loading condition of coverage of described at least two edge-oriented antennas and center antenna;
According to the loading condition in described at least two edge-oriented antennas and the center antenna coverage, be described at least two edge-oriented antennas and center antenna allocation of downlink resource.
Preferably, described step for described at least two edge-oriented antennas and center antenna allocation of downlink resource comprises:
The subchannel that down-chain resource comprised is divided into the group more than that number equals edge-oriented number of antennas, respectively each group is appointed as first wife's resource of each edge-oriented antenna;
From each group, take out a sub-channel allocation successively and give center antenna, judge whether the assigned resource of center antenna can not satisfy the resource requirement that loading condition proposed in its coverage, give center antenna if then continue from each group, to take out a sub-channel allocation successively, otherwise carry out the step of follow-up arrangement subchannel;
For every edge-oriented antenna, arrange all subchannels in such a way: the subchannel that belongs to earlier each edge-oriented antenna first wife resource according to sequence arrangement in former group, alternately arrange the subchannel that belongs in other each group then according to backward in the group, until at every edge-oriented antenna, all having arranged all subchannels is a formation;
Carry out once or once above be the operation of each edge-oriented antenna assignment resource, in the described each time resource allocation operations at every edge-oriented antenna, at first judge corresponding to whether having distributed to center antenna or other edge-oriented antenna corresponding to the subchannel of this distribution number of times in the subchannel formation of this edge-oriented antenna, if be not this edge-oriented antenna assignment subchannel in the then current sub-distribution operation, otherwise this subchannel is distributed to this edge-oriented antenna, after each edge-oriented antenna assignment or non-allocated sub-channels, when last time resource allocation operations end, carry out resource allocation operations next time, the desired resource of loading condition in all edge-oriented antenna footprints all is met, or all subchannels have all divided timing, stop resource allocation.
Preferably, described center base station is distributed cell radio resource and be may further comprise the steps:
The coverage that microzonation is divided into each edge-oriented antenna;
Add up the interior loading condition of coverage of each edge-oriented antenna;
According to the loading condition in each edge-oriented antenna footprint, be each edge-oriented antenna assignment uplink resource.
Preferably, described is that the interior user of each edge-oriented antenna footprint distributes uplink resource to comprise:
The subchannel that uplink resource comprised is divided into the group more than that number equals edge-oriented number of antennas, respectively each group is appointed as first wife's resource of each edge-oriented antenna;
For every edge-oriented antenna, arrange all subchannels in such a way: the subchannel that belongs to earlier each edge-oriented antenna first wife resource according to sequence arrangement in former group, alternately arrange the subchannel that belongs in other each group then according to backward in the group, until at the edge-oriented antenna of each root, all having arranged all subchannels is a formation;
Carry out once or once above be the operation of each edge-oriented antenna assignment resource, each time in the resource allocation operations at every edge-oriented antenna, at first judge corresponding to whether having distributed to user in other edge-oriented antenna footprint corresponding to the subchannel that distributes number of times in the subchannel formation of this edge-oriented antenna, if be not the interior user's allocated sub-channels of this edge-oriented antenna footprint in the then current sub-distribution operation, otherwise this subchannel is distributed to the interior user of this edge-oriented antenna footprint, user in each edge-oriented antenna footprint is distributed or not after the allocated sub-channels, when last time resource allocation operations end, carry out resource allocation operations next time, the desired resource of loading condition in all edge-oriented antenna footprints all is met, or all subchannels have all divided timing, stop resource allocation.
Communication system provided by the present invention and communication means thereof have following advantage:
1) the neighboring edge directional antenna of neighbor cell transmits direction away from each other, therefore portable terminal can not be subjected to the interference of the neighboring edge directional antenna of neighbor cell, do not need mutual coordinated allocation resource between neighbor cell thus, resource distribution mode is flexible thus.
2) all keep to the side directional antenna or center antenna of the portable terminal of each cell edge and center of housing estate, signal quality is better, can obtain better service, improved the signal quality in the sub-district, the signal to noise ratio height, therefore communication system can adopt the more signal modulation system of high-order, obviously improves capability of communication system.
3) to cellular communication system of the prior art, a directional antenna that only needs respectively to be arranged at cell edge by the fiber optic stretch technology is connected to the base station, and adds center antenna at center of housing estate and get final product, therefore to the communication system transformation less, invest little.
Description of drawings
Fig. 1 is the topological structure schematic diagram of cellular communication system in the prior art;
Fig. 2 is the topological structure schematic diagram of a sub-district in the communication system among the present invention;
Fig. 3 is the topological structure schematic diagram of a plurality of sub-districts in the communication system among the present invention;
Fig. 4 is the structural representation of base station in the communication system of the present invention and tier;
Fig. 5 is the flow chart of the medium and small intra-area communication method of communication system of the present invention;
Fig. 6 is the flow chart of communicating system descending link resource allocation methods among the present invention;
Fig. 7 is the flow chart of communication system method for distributing uplink resource among the present invention.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
As shown in Figure 2, communication system of the present invention is made up of a plurality of sub-districts equally, wherein, be provided with center base station 11 in the sub-district 1, in addition, sub-district 1 comprises the directional antenna that transmit direction points to inside, sub-district, these directional antennas are arranged on cell edge, and are connected to center base station 11.In Fig. 2, sub-district 1 comprises three directional antennas (12,12 ', 12 "), three that lay respectively at the sub-district claiming these to place the directional antenna of cell edge among the present invention is edge-oriented antenna; each edge-oriented antenna points to center of housing estate with 120 degree sectors; be used to the coverage that each edge-oriented antenna transmit direction is determined in this sub-district apart from one another by the summit of opening, that is the 120 degree sectors that each edge-oriented antenna covered, and interior portable terminal provides signal.In specific embodiment, the number and the position of same sub-district inward flange directional antenna can be different with actual demand.
Fig. 4 is the structural representation of base station in the communication system of the present invention and tier.As shown in Figure 4, described center base station comprises: resource allocation unit, be used for Radio Resource is distributed, and generate a resource allocation result; Signal processing unit is used for according to described resource allocation result first signal of communication being handled, and generates the second communication signal; Signal conversion unit, being used for described second communication conversion of signals is the 3rd signal; And each described at least one edge-oriented antenna element comprises: signal inverse transformation unit, be used for by described at least one optical cable or cable, receive the 3rd signal, wherein, described the 3rd signal can be the light signal that transmits on optical cable or the cable or signal of telecommunication etc., and described the 3rd conversion of signals is become described second communication signal; Radio frequency unit is connected with described signal inverse transformer, is used for described second communication signal is handled, and generates four-way letter signal; Antenna is connected with described radio frequency unit, is used to receive described four-way letter signal, and described four-way letter signal is sent to described portable terminal.
In addition, this sub-district can further include the center antenna 13 that is arranged on the center of housing estate position, described center antenna 13 can be one or an above omnidirectional antenna, and also one or an above directional antenna can also be one or an above smart antenna.Described center antenna 13 also is connected to center base station 11.
In a plurality of communication system cell of the present invention, the neighboring edge directional antenna of neighbor cell is arranged on same position, and between neighbor cell the neighboring edge directional antenna transmit direction away from each other.As shown in Figure 3, the edge-oriented antenna of sub-district 1,2,3 is respectively (12,12 ', 12 "), (22,22 ', 22 ") and (32,32 ', 32 "), center antenna is respectively 13,23 and 33, wherein; edge-oriented antenna 12 ", 22 ' and 32 be arranged on same position, be the intersection of three sub-districts among this embodiment, for example, these three edge-oriented antennas 12 ", 22 ' and 32 can be arranged on the same antenna iron tower.
By above-mentioned setting, as shown in Figure 2, not only radiuses are that the signal quality of portable terminal is better in the zone of r near the center antenna 13, and the signal quality of each edge-oriented antenna (12,12 ', 12 ") near zone portable terminal is also better; so communication system of the present invention can obviously be improved the signal quality of communication system; and obviously improve signal to noise ratio, communication system also can adopt the signal modulation system of higher-order, so capacity of communication system is also just promoted.
In addition, as shown in Figure 3, edge-oriented antenna 12 " the portable terminal A in the coverage sector can not receive the signal of neighboring edge directional antenna emission in the neighbor cell; because edge-oriented antenna 22 ' and 32 transmit direction and edge-oriented antenna 12 " deviate from mutually, can not cause interference thus to A, the sub-district 1 like this, 2 and 3 center base station 11,21 and 31 can freely distribute this intra-cell resource to give each edge antenna and each center antenna according to this sub-district internal burden situation, and do not need to hold consultation with other sub-district, increase flexibility like this, also can further improve capability of communication system.
Adopt above-mentioned communication system, the method that provides signal by center base station and edge-oriented antenna for portable terminal in the sub-district may further comprise the steps as shown in Figure 5:
Step 101: center base station is distributed cell radio resource, generates a resource allocation result.
Step 102: center base station is handled first signal of communication according to described resource allocation result, generates the second communication signal;
Step 103: center base station becomes the 3rd signal with described second communication conversion of signals, and described the 3rd signal is sent to edge-oriented antenna;
Step 104: edge-oriented antenna receives described the 3rd signal, and converts described the 3rd signal to described secondary signal by at least one optical cable or cable;
Step 105: edge-oriented antenna is handled described secondary signal and is generated the 4th signal;
Step 106: edge-oriented antenna receives and sends described the 4th signal to portable terminal.
Adopt above-mentioned communication means, comprise to the resource allocation of down link with to the resource allocation of up link, wherein to the resource allocation methods of down link as shown in Figure 6, may further comprise the steps carrying out resource allocation in the communication system:
Step 201: the coverage that microzonation is divided into each edge-oriented antenna and center antenna.
Transmitting power according to each edge-oriented antenna and center antenna, and the disturbance regime in the sub-district, to divide the coverage of center antenna near the scope of center antenna certain distance into, for example radius is the circle of r, other cell range is pressed dotted line among Fig. 3, that is, be divided into the coverage of each edge-oriented antenna nearby, as shown in Figure 3 according to 3 120 degree sectors.
Step 202: the interior loading condition of coverage of adding up each edge-oriented antenna and center antenna.
The resource request that portable terminal sent in the coverage of center base station according to each edge-oriented antenna and center antenna is determined the loading condition in the coverage of each edge-oriented antenna and center antenna.
Step 203:, be each edge-oriented antenna and center antenna allocation of downlink resource according to the loading condition in each edge-oriented antenna and the center antenna coverage.
For this step, can adopt multiple mode is each edge-oriented antenna and center antenna allocation of downlink resource, as long as satisfy according to the loading condition allocation of downlink resource in each edge-oriented antenna and the center antenna coverage.In one embodiment, adopt following method that the communication system down link link circuit resource is distributed:
Step 203A: a plurality of subchannels that uplink resource comprised are divided into number equal a plurality of groups of edge-oriented number of antennas, respectively each group is appointed as first wife's resource of each edge-oriented antenna.
Wherein, according to communication protocol, the upstream or downstream link circuit resource of sub-district comprises a plurality of subchannels, takies different frequency or timeslice etc. respectively.
Step 203B: from each group, take out a sub-channel allocation successively and give center antenna, judge whether the assigned resource of center antenna can not satisfy the resource requirement that loading condition proposed in its coverage, give center antenna if then continue from each group, to take out a sub-channel allocation successively, otherwise execution in step 103C.
Step 203C: for every edge-oriented antenna, arrange all subchannels in such a way: the subchannel that belongs to earlier each edge-oriented antenna first wife resource according to sequence arrangement in former group, alternately arrange the subchannel that belongs in other each group then according to backward in the group, until at every edge-oriented antenna, all having arranged all subchannels is a formation.
Step 203D: carry out once or once above be the operation of each edge-oriented antenna assignment resource, each time in the resource allocation operations at every edge-oriented antenna, at first judge corresponding to whether having distributed to center edge directional antenna or other edge-oriented antenna corresponding to the subchannel that distributes number of times in the subchannel formation of this edge-oriented antenna, if be not this edge-oriented antenna assignment subchannel in the then current sub-distribution operation, otherwise this subchannel is distributed to this edge-oriented antenna, after each edge-oriented antenna assignment or non-allocated sub-channels, current sub-distribution resource operation termination, carry out Resources allocation operation next time, the desired resource of loading condition in all edge-oriented antenna footprints all is met, or all subchannels have all divided timing, stop resource allocation.
To comprise 3 edge-oriented antennas in the sub-district is example, above-mentioned 4 steps are described: establishing described center antenna is a1,3 edge-oriented antennas are respectively a2, a3 and a4, establish at first uplink resource to be divided into 9 subchannels, be respectively c1, c2, c3 ..., c9.9 channels are divided into 3 groups, are respectively { c1, c2, c3}, { c4, c5, c6} and { c7, c8, c9}.
If determining the resource requirement that center antenna a1 coverage internal burden situation is proposed, center base station needs 2 subchannels, and the resource requirement that a2, a3 and a4 coverage internal burden situation are proposed needs 1,4 and 2 subchannel respectively, and then at first execution in step 103B gets c1 and the c4 subchannel is distributed to center antenna a1 successively.
Then at every edge-oriented antenna a2, a3 and a4, arrange all subchannels in such a way: the subchannel that belongs to earlier each edge-oriented antenna first wife resource according to sequence arrangement in former group, alternately arrange the subchannel that belongs in other each group then according to backward in the group, until at the edge-oriented antenna of each root, all having arranged all subchannels is a formation.Can get the pairing subchannel formation of edge-oriented antenna a2, a3 and a4 is respectively: [c1, c2, c3, c6, c9, c5, c8, c4, c7] and [c4, c5, c6, c9, c3, c8, c2, c7, c1] and [c7, c8, c9, c3, c6, c2, c5, c1, c4].
Carry out repeatedly resource allocation operations then, for example in first time resource allocation operations, the c1 subchannel should be distributed in order that edge-oriented antenna a2, c4 subchannel distribute to edge-oriented antenna a3, the c7 subchannel is distributed to edge-oriented antenna a4, but because c1 subchannel and c4 subchannel have been distributed to center antenna, so in the resource allocation operations, only be that edge-oriented antenna a4 distributes the c7 subchannel for the first time.
In the resource allocation second time, in order the c2 subchannel is distributed to that edge-oriented antenna a2, c5 subchannel distribute to edge-oriented antenna a3, the c8 subchannel is distributed to edge-oriented antenna a4.
In resource allocation for the third time, the c3 subchannel should be distributed in order that edge-oriented antenna a2, c6 subchannel distribute to edge-oriented antenna a3, the c9 subchannel is distributed to edge-oriented antenna a4, but owing to the resource requirement of edge-oriented antenna a2 and a4 is met, so only the c6 subchannel is distributed to edge-oriented antenna a3.
In like manner, in the 4th resource allocation, the c9 subchannel is distributed to edge-oriented antenna a3.
In the 5th resource allocation, the c3 subchannel is distributed to edge-oriented antenna a3, the resource requirement of all edge-oriented antennas so far all is met, stops resource allocation operations.
By above resource allocation operations, for the center antenna allocated sub-channels c1, c4}, for edge-oriented antenna a2 allocated sub-channels c2}, and for edge-oriented antenna a3 allocated sub-channels c3, c5, c6, c9} is edge-oriented antenna a2 allocated sub-channels { c7, c8}.
Distribute for the ascending resource in the communication system,, therefore can further improve the service quality of portable terminal for portable terminal provides the diversity service owing to the signal of each portable terminal can be received by center antenna and respective edges directional antenna simultaneously.To the resource allocation methods of up link as shown in Figure 7, may further comprise the steps:
Step 301: the coverage that microzonation is divided into each edge-oriented antenna.
According to the position of each edge-oriented antenna, cell range is divided into 3 120 degree sectors, correspond respectively to the coverage of 3 edge-oriented antennas.
Step 302: add up the loading condition in each edge-oriented antenna footprint.
Center base station is determined the loading condition in each edge-oriented antenna footprint according to the resource request that portable terminal sent in each edge-oriented antenna footprint.
Step 303: according to the loading condition in each edge-oriented antenna footprint, for the user in each edge-oriented antenna footprint distributes uplink resource.
For this step, can adopt multiple mode to distribute uplink resource, as long as satisfy the condition of distributing uplink resource according to the loading condition in each edge-oriented antenna footprint for the user in each edge-oriented antenna footprint.In one embodiment, adopt following method that the uplink resource of communication system is distributed:
Step 303A: a plurality of subchannels that uplink resource comprised are divided into number equal a plurality of groups of edge-oriented number of antennas, each group is appointed as first wife's resource of each edge-oriented antenna.
Step 303B: for every edge-oriented antenna, arrange all subchannels in such a way: the subchannel that belongs to earlier each edge-oriented antenna first wife resource according to sequence arrangement in former group, alternately arrange the subchannel that belongs in other each group then according to backward in the group, until at every edge-oriented antenna, all having arranged all subchannels is a formation.
Step 303C: carrying out repeatedly is the operation of the user resource allocation in each edge-oriented antenna footprint, each time in the Resources allocation operation at the overlay area of every edge-oriented antenna, at first judge corresponding to whether having distributed to user in other edge-oriented antenna footprint corresponding to the subchannel that distributes number of times in the subchannel formation of this edge-oriented antenna, if be not the interior user's allocated sub-channels of this edge-oriented antenna footprint in the then current sub-distribution operation, otherwise this subchannel is distributed to the interior user of this edge-oriented antenna footprint, user in each edge-oriented antenna footprint is distributed or not after the allocated sub-channels, current sub-distribution resource operation termination, carry out Resources allocation operation next time, the desired resource of loading condition in all edge-oriented antenna footprints all is met, or all subchannels have all divided timing, stop resource allocation.
Because similar with the distribution to downlink resource to the distribution of ascending resource, difference is not only needing Resources allocation to give center antenna, so locate no longer illustrative example explanation.
The above is preferred embodiment of the present invention only, is not to be used for limiting protection scope of the present invention.Those skilled in that art should be able to associate; communication system adopts the edge-oriented antenna of different numbers; center antenna adopts dissimilar antennas to realize; adopting distinct methods is center antenna and edge-oriented antenna assignment resource, and other is equal to accordingly to change or replace according to technical scheme of the present invention and design thereof and all should belongs to protection scope of the present invention.
Claims (8)
1. communication system comprises:
At least two communication cells, wherein at least one described communication cell comprises:
Be positioned at the center base station of described communication cell center, comprise the center antenna that links to each other with described center base station;
At least one optical cable or cable;
At least one edge-oriented antenna element is connected with described center base station by described at least one optical cable or cable, is in the portable terminal in described at least one edge-oriented antenna element service area;
Portable terminal sends resource request information to described center base station;
Edge-oriented antenna element is transmitted the data of described center base station transmission to described portable terminal;
Wherein, the antenna of the adjacent described edge-oriented antenna element of neighbor cell is placed on same position, and between neighbor cell described neighboring edge directional antenna transmit direction away from each other; The number of antennas that belongs to the edge-oriented antenna element of same communication cell is three, three that are in described communication cell respectively apart from one another by the summit of opening, and spend the center that this communication cell is pointed in sectors with 120 respectively, correspondingly, the antenna of three of three neighbor cells described edge-oriented antenna elements is arranged on the intersection of described three neighbor cells;
Described center base station comprises:
Resource allocation unit is used for freely distributing in this sub-district Radio Resource to give each edge-oriented antenna and each center antenna according to sub-district, center base station place internal burden situation, generates a resource allocation result; Radio Resource specifically is meant to each edge-oriented antenna and each center antenna and is edge-oriented antenna and center antenna allocation of downlink resource in this sub-district of described distribution, comprise: the subchannel that down-chain resource comprised is divided into the group more than that number equals edge-oriented number of antennas, respectively each group is appointed as first wife's resource of each edge-oriented antenna; From each group, take out a sub-channel allocation successively and give center antenna, judge whether the assigned resource of center antenna can not satisfy the resource requirement that loading condition proposed in its coverage, give center antenna if then continue from each group, to take out a sub-channel allocation successively, otherwise carry out the step of follow-up arrangement subchannel; For every edge-oriented antenna, arrange all subchannels in such a way: the subchannel that belongs to earlier each edge-oriented antenna first wife resource according to sequence arrangement in former group, alternately arrange the subchannel that belongs in other each group then according to backward in the group, until at every edge-oriented antenna, all having arranged all subchannels is a formation; Carry out once or once above be the operation of each edge-oriented antenna assignment resource, in the described each time resource allocation operations at every edge-oriented antenna, at first judge corresponding to whether having distributed to center antenna or other edge-oriented antenna corresponding to the subchannel of this distribution number of times in the subchannel formation of this edge-oriented antenna, if be not this edge-oriented antenna assignment subchannel in the then current sub-distribution operation, otherwise this subchannel is distributed to this edge-oriented antenna, after each edge-oriented antenna assignment or non-allocated sub-channels, when last time resource allocation operations end, carry out resource allocation operations next time, the desired resource of loading condition in all edge-oriented antenna footprints all is met, or all subchannels have all divided timing, stop resource allocation;
Signal processing unit is used for according to described resource allocation result first signal of communication being handled, and generates the second communication signal;
Signal conversion unit, being used for described second communication conversion of signals is the 3rd signal;
Each described at least one edge-oriented antenna element comprises:
The signal inverse transformer is used for receiving the 3rd signal by described at least one optical cable or cable, and described the 3rd conversion of signals is become described second communication signal;
Radio frequency unit is connected with described signal inverse transformer, is used for described second communication signal is handled, and generates four-way letter signal;
Antenna is connected with described radio frequency unit, is used to receive described four-way letter signal, and described four-way letter signal is sent to described portable terminal.
2. a kind of communication system according to claim 1 is characterized in that, described center antenna is specially: at least one omnidirectional antenna links to each other with described center base station.
3. a kind of communication system according to claim 1 is characterized in that, described center antenna is specially: at least one directional antenna links to each other with described center base station.
4. a kind of communication system according to claim 1 is characterized in that, described center antenna is specially: at least one smart antenna links to each other with center base station.
5. a kind of communication system according to claim 1 is characterized in that, described the 3rd signal is specially: the light signal or the signal of telecommunication.
6. a communication means is characterized in that, at least two communication cells, the antenna of the neighboring edge tier of neighbor cell is placed on same position, and between neighbor cell described neighboring edge directional antenna transmit direction away from each other; The number of antennas that belongs to the edge-oriented antenna element of same communication cell is three, three that are in described communication cell respectively apart from one another by the summit of opening, and spend the center that this communication cell is pointed in sectors with 120 respectively, correspondingly, the antenna of three of three neighbor cells described edge-oriented antenna elements is arranged on the intersection of described three neighbor cells; Center base station is positioned at described communication cell central authorities; Described communication means comprises:
Center base station is distributed cell radio resource, generates a resource allocation result; Described center base station is distributed cell radio resource, comprises the coverage of determining at least two edge-oriented antennas and center antenna; Add up the interior loading condition of coverage of described at least two edge-oriented antennas and center antenna; According to the loading condition in described at least two edge-oriented antennas and the center antenna coverage, be described at least two edge-oriented antennas and center antenna allocation of downlink resource;
According to described resource allocation result, first signal of communication is handled, generate the second communication signal;
Described second communication conversion of signals is become the 3rd signal, and described the 3rd signal is sent to edge-oriented antenna;
Edge-oriented antenna receives described the 3rd signal by at least one optical cable or cable, and converts described the 3rd signal to described secondary signal;
Described secondary signal is handled generation the 4th signal;
Receive and send described the 4th signal;
Described step for described at least two edge-oriented antennas and center antenna allocation of downlink resource comprises:
The subchannel that down-chain resource comprised is divided into the group more than that number equals edge-oriented number of antennas, respectively each group is appointed as first wife's resource of each edge-oriented antenna;
From each group, take out a sub-channel allocation successively and give center antenna, judge whether the assigned resource of center antenna can not satisfy the resource requirement that loading condition proposed in its coverage, give center antenna if then continue from each group, to take out a sub-channel allocation successively, otherwise carry out the step of follow-up arrangement subchannel;
For every edge-oriented antenna, arrange all subchannels in such a way: the subchannel that belongs to earlier each edge-oriented antenna first wife resource according to sequence arrangement in former group, alternately arrange the subchannel that belongs in other each group then according to backward in the group, until at every edge-oriented antenna, all having arranged all subchannels is a formation;
Carry out once or once above be the operation of each edge-oriented antenna assignment resource, in the described each time resource allocation operations at every edge-oriented antenna, at first judge corresponding to whether having distributed to center antenna or other edge-oriented antenna corresponding to the subchannel of this distribution number of times in the subchannel formation of this edge-oriented antenna, if be not this edge-oriented antenna assignment subchannel in the then current sub-distribution operation, otherwise this subchannel is distributed to this edge-oriented antenna, after each edge-oriented antenna assignment or non-allocated sub-channels, when last time resource allocation operations end, carry out resource allocation operations next time, the desired resource of loading condition in all edge-oriented antenna footprints all is met, or all subchannels have all divided timing, stop resource allocation.
7. a kind of communication means according to claim 6 is characterized in that, described center base station is distributed cell radio resource and be may further comprise the steps:
The coverage that microzonation is divided into each edge-oriented antenna;
Add up the interior loading condition of coverage of each edge-oriented antenna;
According to the loading condition in each edge-oriented antenna footprint, be each edge-oriented antenna assignment uplink resource.
8. a kind of communication means according to claim 7 is characterized in that, described is that the interior user of each edge-oriented antenna footprint distributes uplink resource to comprise:
The subchannel that uplink resource comprised is divided into the group more than that number equals edge-oriented number of antennas, respectively each group is appointed as first wife's resource of each edge-oriented antenna;
For every edge-oriented antenna, arrange all subchannels in such a way: the subchannel that belongs to earlier each edge-oriented antenna first wife resource according to sequence arrangement in former group, alternately arrange the subchannel that belongs in other each group then according to backward in the group, until at the edge-oriented antenna of each root, all having arranged all subchannels is a formation;
Carry out once or once above be the operation of each edge-oriented antenna assignment resource, each time in the resource allocation operations at every edge-oriented antenna, at first judge corresponding to whether having distributed to user in other edge-oriented antenna footprint corresponding to the subchannel that distributes number of times in the subchannel formation of this edge-oriented antenna, if be not the interior user's allocated sub-channels of this edge-oriented antenna footprint in the then current sub-distribution operation, otherwise this subchannel is distributed to the interior user of this edge-oriented antenna footprint, user in each edge-oriented antenna footprint is distributed or not after the allocated sub-channels, when last time resource allocation operations end, carry out resource allocation operations next time, the desired resource of loading condition in all edge-oriented antenna footprints all is met, or all subchannels have all divided timing, stop resource allocation.
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| CN101848019A (en) * | 2009-03-27 | 2010-09-29 | 富士通株式会社 | Communication device and method for forming service area of communication device |
| CN108834063B (en) * | 2018-05-31 | 2022-02-25 | 北京佰才邦技术股份有限公司 | Terminal scheduling method and device |
| CN113497654A (en) * | 2020-04-07 | 2021-10-12 | 普天信息技术有限公司 | Optical fiber distributed system |
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|---|---|---|---|---|
| CN1173793A (en) * | 1996-07-02 | 1998-02-18 | 松下电器产业株式会社 | Mobile communication system with improved antenna arrangement |
| US6898431B1 (en) * | 1999-05-24 | 2005-05-24 | Ericsson Inc. | Dynamic channel allocation in a sectored cell of a cellular communication system |
| CN101006745A (en) * | 2005-06-29 | 2007-07-25 | 株式会社东芝 | Wireless communications system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1173793A (en) * | 1996-07-02 | 1998-02-18 | 松下电器产业株式会社 | Mobile communication system with improved antenna arrangement |
| US6898431B1 (en) * | 1999-05-24 | 2005-05-24 | Ericsson Inc. | Dynamic channel allocation in a sectored cell of a cellular communication system |
| CN101006745A (en) * | 2005-06-29 | 2007-07-25 | 株式会社东芝 | Wireless communications system |
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