CN101860918A - Method of mobile communication and system thereof - Google Patents
Method of mobile communication and system thereof Download PDFInfo
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- CN101860918A CN101860918A CN 201010164036 CN201010164036A CN101860918A CN 101860918 A CN101860918 A CN 101860918A CN 201010164036 CN201010164036 CN 201010164036 CN 201010164036 A CN201010164036 A CN 201010164036A CN 101860918 A CN101860918 A CN 101860918A
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Abstract
The present invention provides a method of mobile communication and a system thereof. The mobile communication system comprises a main base station and a plurality of sub-communication-devices. The sub-devices are sub-base-stations or user devices. The sub-base-stations and the user devices are all provided in the main covering area of the main base station. The method comprises the following steps: obtaining the positions of the sub-communication-devices; and furthermore, grouping the sub-communication-devices according to the positions of the sub-communication-devices; afterwards, obtaining the distribution of the transmission resource according to the grouping result, receiving the distribution by the sub-communication-devices for controlling message sending and data transmission; and, correspondingly with the receiving of the distribution, enabling the using of same transmission resource by the sub-communication-devices which are distributed with same transmission resource.
Description
Technical field
The present invention relates to a kind of mobile communication technology, and be particularly related to and hived off according to its position in subbase station and user's device, and come the method for mobile communication and the system of allocation of transmission resources according to grouping result.
Background technology
For construction with provide easy to use and transmit message transmission environment fast, telecommunications service provide manufacturer constantly existing mobile communication network technology to be developed and improved.For example, extensive use at present 3G (Third Generation) Moblie technology (3-rd Generation arranged, (the Universal Mobile telecommunications system of universal mobile telecommunications system 3G), be called for short UMTS), grounding wireless access network network (UMTS Terrestrial Radio Access Network, be called for short UTRAN), GERAN (GSM/EDGE) system, global intercommunication microwave inserts (Worldwide Interoperabilityfor Microwave Access, be called for short WiMAX) system and other radio network techniques, these carry out the exploitation and the improvement of mobile communications network simultaneously.
In many mobile communications networks, the common communication access point in base station (Base Station is called for short BS) as many radio communication devices.Wherein, radio communication device then can be mobile terminal apparatus (MobileStation, MS) (for example: mobile phone) or user's device (User Equipment, UE) (for example: mobile computer) etc., certainly, mobile terminal apparatus also can be user's device, and vice versa.Radio communication device can be fixture (for example personal computer (PC)) or mobile device (for example cell phone, laptop computer or other mobile communications devices).In addition, focus on all in the mobile communications network network development in the near future that promoting radio wideband inserts (Wireless broadband access, performance improvement WBA).Because the covering scope (also being called the huge area of coverage) of large-scale base station (macro BS) is vast, the mobile communications device of supporting in its scope is numerous, therefore have heavier communications burden, the large-scale base station area of coverage huge with it can be referred to as megacell (macrocell).And, large-scale base station is set up difficulty because of factors such as environmental protection, fight make and is promoted, and the indoor communication usefulness of building can set up the orientation because of the base station, be caused having communication dead angle by factors such as building or other barrier shieldings, and makes that indoor communication quality is very different.Be to found the bureau with, cloth that (for example: superminiature base station, femto base station (Femto BS), base station from home (Home BS, HBS)) just become the good solution that increases indoor communications usefulness for portion or subbase station.
The low-power at subbase station, high frequency range characteristic, can allow the user that the mobile communication access point is installed voluntarily, it provides the subcovering district of less covering scope, femto base station and its subcovering district can be referred to as femto unit (femtocell), make it place residential area or small business's environment for use.Zonal femto unit can set up and superposition in the subregion of megacell, to deal with the mobile communication zone of highly dense.And the subbase station can (digital subscriber line, wire communication mechanism access mechanism DSL) links to mobile core network (coreintemet) with the subbase station, to enjoy the mobile communication service of frequency range via for example Digital Subscriber Line.On the whole, can explain the advantage of setting up the subbase station from two aspects.From telecommunications dealer's angle, advantage comprises (1) minimizing back-end network (backhaul) capacity requirement; (2) increase wireless capacity; (3) reduce covering scope leak and produce new conformability service.And from client's angle, advantage comprises that (1) does not need to change phone and good indoor covering scope and quality are arranged; And (2) one numbers one phone and regional certain price.
Yet, owing to the coverage area at large-scale base station and subbase station often overlaps, just can the phase mutual interference during transmission information.In addition, large-scale base station also can be because of disturbing or problem such as transfer resource distribution and cause transmission quality low.
Summary of the invention
The invention provides a kind of method of mobile communication, utilize the position of subbase station and user's device that this a little communicator is hived off, and come allocation of transmission resources, allow dominant base and subbase station can transmit information simultaneously, and then improve communication usefulness according to grouping result.
The present invention proposes a kind of method of mobile communication, is used for a mobile communication system.This mobile communication system comprises a dominant base and a plurality of sub-communicator, each sub-communicator be subbase station and user's device the two one of.Wherein, the position of the subcovering district at subbase station and user's device all is positioned within the prime coverage area of dominant base.This method comprises the following steps: to obtain this a little communicator information, wherein this a little communicator information comprises the position of sub-communicator, and the position of the sub-communicator of foundation, this a little communicator is hived off, and obtain a distribution of transfer resource according to grouping result, this a little communicator receives distribution of transmission resource, post a letter and transfer of data and Data Receiving to be used for control, and, be assigned with the use of this a little communicator activation same transmission resource of same transmission resource in response to the reception of aforementioned distribution.
From another angle, the present invention proposes a kind of system of mobile communication, comprises a dominant base, a plurality of sub-communicator and a location server.Arbitrary sub-communicator can be subbase station and user's device the two one of, wherein the position of the subcovering district at subbase station and user's device all is positioned within the prime coverage area of dominant base.Location server is in order to obtain sub-communicator information, and this a little communicator information comprises the position of sub-communicator.And location server hives off this a little communicator according to the position of sub-communicator.Then, dominant base and subbase station obtain distribution of transmission resource according to grouping result.This a little communicator is responded the reception that distributes, and is assigned with the use of the sub-communicator activation same transmission resource of same transmission resource.
Based on above-mentioned, embodiments of the invention receive the position of each subbase station and user's device, by this above-mentioned sub-mobile communications device is hived off, and utilize mechanism such as time-division and frequency division to come allocation of transmission resources, allow subbase station, user's device or dominant base can transmit information simultaneously, and be interfered hardly, to keep good stable communication quality.And the group base station is when finding that user's device enters its subcovering district, and dominant base can be transformed into its control in the subbase station, allows user's device can access the excellent communications quality.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and conjunction with figs. is described in detail below.
Description of drawings
Fig. 1 illustrates six examples of the interference that dominant base and subbase station may meet with in the mobile communications network.
Fig. 2 keeps the schematic diagram that the transfer resource mode avoids interference according to the described a kind of mobile communication system utilization of an embodiment.
Fig. 3 is the schematic diagram according to the system of the described mobile communication of one embodiment of the invention.
Fig. 4 is the flow chart according to the method for the described mobile communication of one embodiment of the invention.
Fig. 5 is the control structure figure according to the method for the described mobile communication of one embodiment of the invention.
Fig. 6 is the schematic diagram according to a kind of mode of hiving off of one embodiment of the invention explanation.
Fig. 7 enters the control structure figure of subbase station with conversion and control power according to the described user's device of one embodiment of the invention.
Fig. 8 is invited according to the described user's device of one embodiment of the invention and is entered the control structure figure of this mobile communication system.
[main element symbol description]
MS1～MBS2: dominant base
HBS1～HBS6: subbase station
UE1～UEN: user's device
RB, RB1: transfer resource
200,300: the system of mobile communication
310: location server
320: carrier network
330: the Internet
340; Mobile core network
700～780,800～875: label
S410～S450: step
R: the radius in the subcovering district at subbase station
Embodiment
Now will the example of described one exemplary embodiment be described in the accompanying drawings in detail with reference to the one exemplary embodiment of this creation.In addition, all possibility parts, the identical or similar portions of element/member/symbology of use same numeral in drawings and the embodiments.
The group base station be arranged at large-scale base station (macro BS, in the time of MBS) in the megacell (macrocell) that (in present embodiment, also can be described as dominant base), the subbase station normal with the interaction of large-scale base station.In mobile communications network, can come to comprise carrier frequency, power, frequency range etc. by the mode of planning femto unit (femtocell) for indivedual base station sets operating parameters.Under the limited situation of transfer resource, also can utilize frequency reuse (frequency reuse) notion to improve overall network usefulness.In planning process, the dealer must carry out field investigation, comprises the area of coverage of obtaining various base stations, also may need to obtain the scope of user's device signal, also is called the area of coverage of user's device, with information required in the process that is attained at setup parameter.Yet, when being installed, the subbase station is usually directed to the installation situation of plug and play, so may be more incorrect in the mode of manpower planning femto unit.
Another kind of planning mode then is the scheme of automatic allocation of transmission resources, so that dominant base and subbase station are by time division mechanism (time division mechanism, TDM) and/or frequency division mechanism (frequencydivision mechanism is FDM) to avoid transmitting the information simultaneously and phase mutual interference.Yet,, cause dominant base and subbase station to be difficult to the identical transmission frequency/resource of repeated use with avoiding and cause communication quality and the usefulness reduction because the subbase station number in the specific megacell may be excessive.As shown in Figure 1, Fig. 1 illustrates six examples of the interference that dominant base MBS and subbase station HBS may meet with in the mobile communications network, and Fig. 1 comprises table 1.Under the listed situation of table 1, user's device UE2 and UE3 in user's device UE1 in the prime coverage area and UE4, the subcovering district all can cause interference to down link and the up link of dominant base MBS1, MBS2 and subbase station HBS1 and HBS2.Note that Fig. 1 and not drawn on scale at this, only for illustrating the schematic example of various situations.
Therefore, embodiment in this proposition can provide following notion: in allocation of transmission resources (resourceblock, in the time of RB), dominant base MBS1 keeps part transfer resource RB to give subbase station HBS1～HBS6 and uses, to avoid the phase mutual interference by this, please refer to Fig. 2.Fig. 2 is the schematic diagram that utilizes the mode of reservation transfer resource RB to avoid interference according to the described a kind of mobile communication system 200 of an embodiment.In the present embodiment, the subcovering district of subbase station HBS1～HBS6 and user's device UE1～UEN all are positioned in the middle of the prime coverage area of dominant base MBS1, and N is a positive integer.
Transfer resource RB allows dominant base MBS1 or subbase station HBS1～HBS6 to the user's device in its area of coverage transmission the transmitting bandwidth and the time interval that information kept, the left half-court piece of transfer resource RB is dominant base MBS1 or the subbase station HBS1～HBS6 down link to user's device, that is dominant base MBS1 or subbase station HBS1～HBS6 utilize transfer resource shown in Figure 2 (comprising the transmitting bandwidth and the time interval) information to be sent to the user's device that is positioned at its area of coverage.Relatively, the right half-court piece of transfer resource RB is uploaded information for user's device and is given dominant base MBS1 or the employed transfer resource of subbase station HBS1～HBS6, also is referred to as up link.In the present embodiment, the distribution of transfer resource RB comprises a plurality of resource allocation units, and each resource allocation unit then comprises Frequency Distribution, time distribution, frequency-time block, assigned power level, assigned code grade etc., or its combination in any.
As shown in Figure 2, the described method of present embodiment can keep the transfer resource RB of part to subbase station HBS1～HBS6, and dominant base MBS1 just can't use the transfer resource RB that has kept.For example, when the first transfer resource RB1 had kept to subbase station HBS1, dominant base MBS1 just banned use of the first transfer resource RB 1 to come transmission information.Relatively, the transfer resource RB that does not have to keep just gives dominant base MBS1 and uses, and this moment, each subbase station HBS1～HBS6 can't use the transfer resource RB that does not keep, and reaches by this and avoids the purpose that interferes with each other.But as the subbase station HBS1 in the prime coverage area～when the HBS6 number is too much, because each subbase station HBS1～HBS6 has its required transmission network frequency range, therefore it is meticulous transfer resource RB can't to be distributed, thereby causes transfer resource RB can't be supplied to all base stations in full amount.
Therefore, some embodiments of the present invention can utilize subbase station and the position of user's device and the degree of mutual interference mutually that this a little communicator is hived off.And come allocation of transmission resources RB according to grouping result, allow dominant base and subbase station can transmit information simultaneously, and reduce the situation of phase mutual interference, use the lifting communication quality, promote communication usefulness.Therefore, use embodiments of the invention can improve the utilization rate of transfer resource, and avoid simultaneously or slow down interference shown in Figure 1.
As shown in Figure 3, Fig. 3 is the schematic diagram according to the system 300 of the described mobile communication of one embodiment of the invention.The system 300 of mobile communication comprises dominant base MBS1, subbase station HBS 1 and HBS2, user's device UE1～UE3 and location server (location server) 310.Wherein, subbase station HBS1, HBS2 and user's device UE1～UE3 all can be described as sub-communicator.The position of the subcovering district of subbase station HBS1, HBS2 and user's device UE1～UE3 all is positioned within the prime coverage area of dominant base MBS1.The carrier network 320 that subbase station HBS1, HBS2 are provided by operator (ISP) in present embodiment (for example DSL or fiber optic cables) is connected to the Internet (Internet) 330, and dominant base MBS1 also is connected to the Internet 330.310 of location servers are arranged in mobile core network 340, and link to each other with the Internet 330, use to be coupled to dominant base MBS1 and subbase station HBS1, HBS2.Carrier network 320, the Internet 330 and mobile core network 340 then are referred to as the back-end network (backhaul) of mobile communication system 300.
Describe this embodiment of the present invention in detail at this, please be simultaneously with reference to Fig. 4 and Fig. 5.Fig. 4 is the flow chart according to the method for the described mobile communication of one embodiment of the invention.Fig. 5 is the control structure figure according to the method for the described mobile communication of one embodiment of the invention.In the prime coverage area of dominant base MBS 1, be initialized as the example explanation with subbase station HBS1 in the present embodiment.In other embodiments, subbase station HBS1 can utilize sub-communicator (as: user's device) to substitute.
In step S410, during group base station HBS1 initialization, the position of meeting first line search oneself itself, again this positional information is formed a sub-communicator information together with the information such as frequency range requirement of the user's device in the subcovering district scope of the annoyance level between the sub-communicator, subbase station HBS1, and this sub-communicator information is sent to location server 310 by back-end network, and location server 310 also comprises other positional informations of the sub-communicator that finishes of initialization.In the present embodiment, subbase station HBS1 herein can pass through global positioning system (Global Positioning System, be called for short GPS) and confirms the position of self.And in other embodiment, the also rough position that can make subbase station HBS1 by the router (router) or the gateway (Gateway) of the Internet or carrier network, so use which kind of method on earth, or not obtaining positional information voluntarily by the subbase station, the present invention is neither should exceed with the foregoing description.Certainly, the possibility that can't obtain the positional information at some subbase station also has.
Then enter step S420, whether location server 310 foundation earlier knows the information such as position of sub-communicator, and sub-communicator is divided into no position reporting information and two kinds of position reporting information are arranged, and sends these data to dominant base MBS1.Wherein for the sub-communicator of no position reporting information, dominant base MBS1 or location server 310 can range this a little communicator earlier and use the used resource area (RB region) of no positional information (position-insensitive).For the sub-communicator that position reporting information is arranged, dominant base MBS1 or location server 310 can range the resource area that makes apparatus positional information (position-intensive) with this a little communicator.If the above-mentioned running of hiving off be by or location server 310 finished, then these can send to dominant base MBS1 according to sub-communicator grouping result and information that positional information produced of sub-communicator.Can finish by dominant base or location server with this action of hiving off in the foregoing description, but non-to limit the present invention.
In step S430, because each subbase station required frequency range of HBS1 is not quite similar, but only use limited and fixing transfer resource, so dominant base MBS1 must make distribution of transmission resource according to the information of hiving off with subbase station HBS1 under it and consult, to obtain distribution of transmission resource.Wherein, be assigned to sub-the communicator identical or transfer resource that part overlaps and can utilize same frequency to come transmission information simultaneously, and reduce the situation of phase mutual interference.In addition, the required transfer resource size of each sub-communicator may be different, therefore the sub-communicator of the less transfer resource of needs may only belong to the part of the transfer resource that is assigned to, and other unappropriated transfer resources just can yield the sub-communicator that needs more transfer resource by assignment negotiation.In the present embodiment, after negotiation finished distribution of transmission resource, dominant base MBS1 can upgrade the information of hiving off in the location server 310, used for next distribution of transmission resource and consulted to use.
In step S440, these subbase station HBS1 and user's devices (both all can be described as sub-communicator) that are positioned at the prime coverage area of dominant base MBS1 receive above-mentioned distribution of transmission resource, and control is posted a letter to be used for, transfer of data and Data Receiving.Wherein, subbase station HBS1 can utilize back-end network to receive the distribution of this transfer resource RB, also can obtain this distribution from the broadcast message of dominant base MBS1.In addition, transmit user's device of information via dominant base MBS1 and can obtain this distribution from the broadcast message of dominant base MBS1 yet, the present invention should be as limit.In step S450, each sub-communicator is responded the reception of this distribution afterwards, but wherein is assigned to the use of the sub-communicator activation same transmission resource RB of same transmission resource RB.For instance, the sub-communicator that is assigned to same transmission resource RB can utilize same frequency to come transmission information simultaneously.The interference between dominant base MBS1 and the sub-communicator just can be avoided or alleviate to use this method, and the user can enjoy bigger message transmission rate.
Wherein, one embodiment of the invention has the multiple mode that sub-communicator is hived off, enumerate two kinds of modes of hiving off at this, its purpose is finds out the lower sub-communicator of phase mutual interference, make it be assigned to transfer resource RB identical or that part overlaps, so that this a little communicator can utilize same frequency to come transmission information simultaneously, so the present invention should be as limit.Fig. 6 is the schematic diagram according to a kind of mode of hiving off of one embodiment of the invention explanation.Wherein, the radius in the subcovering district of " r " expression subbase station HBS1～HBS6.In the present embodiment, user's device UE1～UE3 and subbase station HBS1～HBS6 all classify as the resource area that makes the apparatus positional information, it is the positional information of acquisition itself voluntarily, user's device UEN then classifies as the resource area of using no positional information, its position that can't detect oneself maybe can't provide the information of own position, therefore is controlled by dominant base MBS1.First kind of mode of hiving off please be simultaneously with reference to Fig. 6 and table 2.
Table 2
Illustrate as Fig. 6, the relative distance of group base station HBS1 and HBS4 is during less than " 2r " (also can be described as distance threshold value), and there is the overlapping part in the subcovering district of expression subbase station HBS1 and HBS4.Distance threshold value herein may change to some extent because of all factor affecting of communication environment, and the present invention should be as limit.In the present embodiment, the subbase station HBS1 that location server 310 just will have the part of overlapping is divided into same a group with HBS4, HBS2 and HBS3, and its grouping result is as shown in table 2, does not repeat them here.User's device also can be adopted the mechanism of hiving off as above-mentioned embodiment, and wherein the subcovering district also can be decided by signal strength signal intensity or interference strength etc.
Then when allocation of transmission resources RB, dominant base MBS1 is assigned identical transfer resource RB with one of them of each group subbase station or one of them of user's device.For example, the transfer resource RB among Fig. 6 is distributed in the 1st crowd subbase station HBS1, the 2nd crowd subbase station HBS2, the 3rd crowd subbase station HBS5 in the table 2 among the identical transfer resource RB with user's device UE1.By this, the problem that when utilizing same transmission resource RB, just can not disturb of the subbase station HBS5 of the subbase station HBS2 of the 1, the 2nd crowd of the 1st crowd subbase station HBS and the 3rd group (because not the subcovering district that overlaps).In addition, when utilizing identical transfer resource RB, the modes such as oriented antenna or adjustment through-put power of Uplink/Downlink between dominant base MBS1 and the user's device UE1 can utilizing in present embodiment reduce the interference for other subbase stations HBS1～HBS6, and the present invention should be as limit.
Whether another kind of sorting technique then allows sub-communicator (comprising subbase station HBS1～HBS6 and user's device UE1, UE2) detect to interfere with each other to produce sub-communicator information voluntarily and gives location server 310.Location server 310 is lower than one with mutual interference degree and disturbs the sub-communicator of critical value to be divided into same a group, please refer to table 3.This suppose the 1st group with the 2nd group in the middle of the mutual interference degree of sub-communicator all be lower than the interference critical value.
Table 3
| The 1st group | The 2nd group |
| ??HBS1 | ??HBS3 |
| ??HBS2 | ??HBS4 |
| ??HBS5 | ??HBS6 |
| ??UE1 | ??UE2 |
Shown in Fig. 6 and table 3, since lower with the mutual interference degree of the sub-communicator of a group, so present embodiment will be assigned same transmission resource RB with the sub-communicator of a group.By this, just can allow dominant base MBS1 and subbase station HBS1～HBS6 can transmit information simultaneously, and can the phase mutual interference and reduce communication quality.
In addition, in order to maintain the communications status of user's device UE1, UE2 best in quality, when user's device UE1, UE2 move to the subcovering district of subbase station HBS1, HBS2 respectively from prime coverage area, just the control of user's device UE1, UE2 can be weighed (handover) to subbase station HBS1, HBS2, so that better service quality to be provided from dominant base MBS1 difference conversion and control.Fig. 7 enters the control structure figure of subbase station with conversion and control power respectively according to the described user's device of one embodiment of the invention UE1, UE2.
As shown in Figure 7, when dominant base MBS1 finds that at first user's device UE1, UE2 move to the subcovering district of subbase station HBS1, HBS2 respectively (that is dominant base MBS1 is to user's device UE1, UE2 initialization), dominant base MBS1 proposes position probing to user's device UE1, UE2 respectively at label 700 places, and then user's device UE1, UE2 also return the position at place separately respectively to detect and to confirm that user's device UE1, UE2 are arranged in the subcovering district of subbase station HBS 1, HBS2 really in label 710 places.Afterwards, dominant base MBS1 passes to subbase station HBS1, HBS2 at label 720 places respectively with the relevant information of control transfer signal, distribution of transmission resource and user's device UE1, UE2.Then, dominant base MBS1 passes to UE1, UE2 at label 730 places respectively with the control transfer signal, makes it understand control and has been transferred to subbase station HBS1 and HBS2 respectively.And subbase station HBS1 also informs corresponding user's device UE1, UE2 respectively with HBS2 at label 740 places, and begins transmission information.
In other embodiments, user's device UE1, UE2 are before receiving the control transfer signal, and dominant base MBS1 also can detect and confirm whether user's device UE1, UE2 can intercom with subbase station HBS1 and HBS2 really mutually.Because user's device UE1, UE2 may be subjected to the influence of building or other factors, though be arranged in the subcovering district of subbase station HBS1 and HBS2, can't communicate by letter with HBS2 with subbase station HBS1 (that is not in communication range of subbase station HBS1 and HBS2).If user's device UE1, UE2 can't intercom mutually with subbase station HBS1, HBS2, user's device UE1, UE2 still utilize dominant base MBS1 to come transmission information.In addition, after user's device UE1, UE2 received the control transfer signal, because communication factors or other reasons find to carry out control when shifting, then user's device UE1, UE2 replied dominant base MBS1, fail to illustrate that its control shifts.
If subbase station HBS1 and HBS2 detect user's device UE1, UE2 when entering separately subcovering district respectively in advance (that is subbase station HBS1 and HBS2 respectively to user's device UE1, UE2 initialization), subbase station HBS1 and HBS2 just can transmit at label 750 places and find that signal is with notice dominant base MBS1.Afterwards, dominant base MBS1 passes to subbase station HBS1, HBS2 at label 760 places respectively with the relevant information of control transfer signal, distribution of transmission resource and user's device UE1, UE2.Then, dominant base MBS1 passes to user's device UE1, UE2 at label 770 places respectively with the control transfer signal, makes it understand control and has been transferred to subbase station HBS1 and HBS2 respectively.And subbase station HBS1 also informs corresponding user's device UE1, UE2 respectively with HBS2 at label 780 places, and begins transmission information.
Described in previous embodiment, user's device UE1, UE2 are before receiving the control transfer signal, and dominant base MBS1 also can detect and confirm whether user's device UE1, UE2 can intercom with subbase station HBS1 and HBS2 really mutually.In addition, after user's device UE1, UE2 received the control transfer signal, because communication factors or other reasons find to carry out control when shifting, then user's device UE1, UE2 replied dominant base MBS1, fail to illustrate that its control shifts.Other thin portion flow processs have comprised in the above-described embodiments, do not repeat them here.
And dominant base MBS1 and subbase station HBS1 also can transmit sensing signal (cognition message) and invite the user's device with identical mobile communication technology to add in this mobile communication system when transmission information.Sensing signal can comprise frequency of operation, network bandwidth, wireless access technology (radio access techology, RAT) information such as (for example: WIMAX, WiFi, 3GPP) and valid expiration date of dominant base MBS1 or subbase station HBS1.In addition, user's device may cover signal or other reasons owing to building, it is also poor to cause communication quality for the subbase station to be compared to the service quality of dominant base, therefore just can utilize the embodiment of the invention that control is transferred to the comparatively good base station of communication, to promote communications status.UE1 is subjected to the invitation of dominant base MBS1 or subbase station HBS1 and prepares to add this mobile communication system at this hypothesis user device, as shown in Figure 8.Fig. 8 is invited according to the described user's device of one embodiment of the invention and is entered the control structure figure of this mobile communication system.
Before finding that user's device UE1 is favored with an invitation, the distribution that dominant base MBS1 just can will transmit information in label 800 places earlier sends to subbase station HBS1.Then, subbase station HBS 1 just goes on the air its sensing signal to invite user's device UE1 adding.After user's device UE1 is favored with an invitation, is convenient to antithetical phrase base station HBS1 in the label 820 and utilizes other frequencies to carry out the foundation and the setting of Radio Resource control (RRC).
Then, when user's device UE1 wants to be transferred to subbase station HBS1 from dominant base MBS1, and subbase station HBS1 is during at first to user's device UE1 initialization, and subbase station HBS1 sends user's device UE1 in label 830 places to dominant base MBS1 and finds signal.Dominant base MBS1 passes to subbase station HBS1 at label 840 places with the relevant information of distribution of transmission resource and user's device UE1.Then, dominant base MBS1 passes to user's device UE1 at label 850 places with the control transfer signal.Subbase station HBS1 just utilizes other frequencies to broadcast its sensing signal at label 860 places afterwards, and user's device UE1 also finishes signal in the transfer of label 865 places passback control.In other embodiments, user's device UE1 is before receiving the control transfer signal, dominant base MBS1 also can detect and confirm whether user's device UE1 can intercom with subbase station HBS1 really mutually, shifts the situation generation that but causes communication quality to degenerate on the contrary to avoid that control takes place.
If dominant base MBS1 is during at first to user's device UE1 initialization, dominant base MBS1 detects the position of user's device UE1 in label 870 places, and returns its position to confirm in label 875 user of place device UE1.Just as above-mentioned label 840 to 875 places, do not repeat them here afterwards.In addition, after user's device UE1 received the control transfer signal, because communication factors or other reasons find to carry out control when shifting, then user's device UE1 just can reply dominant base MBS1, fails to illustrate that its control shifts.
Based on above-mentioned, embodiments of the invention receive the position of each subbase station and user's device, by this above-mentioned sub-mobile communications device is hived off, and utilize time-division and frequency division mechanism to come allocation of transmission resources, allow subbase station and dominant base can transmit information simultaneously, and be interfered hardly, to keep good stable communication quality.And the group base station is when finding that user's device enters its subcovering district, and dominant base can be transformed into its control in the subbase station, allows user's device can access the excellent communications quality.
Though the present invention with embodiment openly as above; right its is not in order to qualification the present invention, those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the appended claims person of defining.
The cross reference of related application
Present specification is advocated the rights and interests of No. the 61/168th, 413, the U.S. Provisional Application of No. the 61/167th, 664, the U.S. Provisional Application of application on April 8th, 2009 and application on April 10th, 2009, and the content of above-mentioned case all is incorporated herein.
Claims (24)
1. the method for a mobile communication, be used for a mobile communication system, this mobile communication system comprises a dominant base and a plurality of sub-communicator, arbitrary sub-communicator be a subbase station and user's device the two one of, wherein the position of a subcovering district at this subbase station and this user's device all is positioned within one of this dominant base prime coverage area, and the method for this mobile communication comprises:
Obtain this a little communicator information, wherein this a little communicator information comprises the position of these sub-communicators;
According to the position of this a little communicator, this a little communicator is hived off;
Obtain a distribution of transfer resource according to grouping result;
This branch that this a little communicator receives transfer resource is equipped with to be used for controlling and posts a letter and transfer of data and Data Receiving; And
In response to the reception of this distribution, be assigned with the use of this a little communicator activation same transmission resource of same transmission resource.
2. the method for mobile communication as claimed in claim 1, wherein the step that this a little communicator is hived off comprises:
Timesharing when there is overlapping portion in the subcovering district of this a little communicator is divided into same a group with this a little communicator that overlaps.
3. the method for mobile communication as claimed in claim 2 wherein comprises according to the step that grouping result obtains this distribution of transfer resource:
With one of them distribution same transmission resource of this a little communicator of each group, the relative distance that wherein is assigned this a little communicator of same transmission resource surpasses a distance threshold value.
4. the method for mobile communication as claimed in claim 1, wherein the step that this a little communicator is hived off comprises:
Whether detect this a little communicator interferes with each other; And
Mutual interference degree is lower than one disturbs this a little communicator of critical value to be divided into same a group.
5. the method for mobile communication as claimed in claim 4 wherein comprises according to the step that grouping result obtains this distribution of transfer resource:
To distribute transfer resource identical or that part overlaps with this a little communicator of a group.
6. the method for mobile communication as claimed in claim 1, wherein this a little communicator comprises one first user's device and one first subbase station, the method for this mobile communication also comprises:
When this first subbase station detected this first user device in its subcovering district, this dominant base was notified at this first subbase station;
This first subbase station receives this distribution and one first user's device information of transfer resource; And
This first user device receives a control transfer signal, so that this first user device is via this first subbase station transmission and reception data.
7. the method for mobile communication as claimed in claim 6, before wherein this first user was installed on and receives this control transfer signal, this dominant base detects also confirmed whether first user's device is positioned at the communication range at this first subbase station really.
8. the method for mobile communication as claimed in claim 6, after wherein this first user device received this control transfer signal, discovery can't be carried out control and shifts, and then this first user device is replied this dominant base control and is shifted failure.
9. the method for mobile communication as claimed in claim 1, wherein this a little communicator comprises one first user's device and one first subbase station, the method for this mobile communication also comprises:
Obtain the position of this first user device;
When finding that this first user device is positioned at the subcovering district at this first subbase station, this distribution of this dominant base transmission transfer resource and one first user's device information are to this first subbase station; And
This first user device receives a control transfer signal, so that this first user device is via this first subbase station transmission and reception data.
10. the method for mobile communication as claimed in claim 9, before wherein this first user was installed on and receives this control transfer signal, this dominant base detects also confirmed whether first user's device is positioned at the communication range at this first subbase station really.
11. the method for mobile communication as claimed in claim 9, after wherein this first user device received this control transfer signal, discovery can't be carried out the control transfer, and then this first user device is replied this dominant base control and shifted failure.
12. method of mobile communication as claimed in claim 1, wherein this a little communicator information comprises that annoyance level, mobile device frequency range between these sub-communicators requires the position with this a little communicator.
13. method of mobile communication as claimed in claim 1, wherein this distribution of transfer resource comprises a plurality of resource allocation units, each resource allocation unit comprises a Frequency Distribution, time distribution, one frequency-time block, an assigned power level, an assigned code grade, or its combination in any.
14. the system of a mobile communication comprises:
One dominant base;
A plurality of sub-communicators, arbitrary sub-communicator be a subbase station and user's device the two one of, wherein the position of a subcovering district at this subbase station and this user's device all is positioned within the prime coverage area of this dominant base; And
One location server, in order to obtain this a little communicator information, wherein this a little communicator information comprises the position of these sub-communicators, and this a little communicator is hived off in the position according to this a little communicator, this dominant base and these subbase stations obtain a distribution of transfer resource according to grouping result, and
This a little communicator is in response to the reception of this distribution, and is assigned with the use of this a little communicator activation same transmission resource of same transmission resource.
15. wherein there is the overlapping portion time-division in the system of mobile communication as claimed in claim 14 when the subcovering district of this a little communicator, this a little communicator that this location server will overlap is divided into same a group.
16. the system of mobile communication as claimed in claim 15, wherein this location server is with one of them distribution same transmission resource of this a little communicator of each group, and the relative distance that wherein is assigned this a little communicator of same transmission resource surpasses a distance threshold value.
17. the system of mobile communication as claimed in claim 14, wherein whether this a little communicator detects and interferes with each other, and this location server is divided into same a group with this a little communicator that mutual interference degree is lower than an interference critical value.
18. the system of mobile communication as claimed in claim 17, wherein this location server will distribute transfer resource identical or that part overlaps with this a little communicator of a group.
19. the system of mobile communication as claimed in claim 14, this a little communicator comprises one first user's device and one first subbase station, when this first subbase station detects this first user device in its subcovering district, this dominant base is notified at this first subbase station, this distribution of this dominant base transmission transfer resource and one first user's device information are to this first subbase station, and this dominant base sends control transfer signal to the first a user device, so that this first user device is via this first subbase station transmission and reception data.
20. the method for mobile communication as claimed in claim 19, before wherein this first user was installed on and receives this control transfer signal, this dominant base detected and confirms whether first user's device is positioned at the communication range at this first subbase station really.
21. the method for mobile communication as claimed in claim 19, after wherein this first user device received this control transfer signal, discovery can't be carried out the control transfer, and then this first user device is replied this dominant base control and shifted failure.
22. the system of mobile communication as claimed in claim 14, this a little communicator comprises one first user's device and one first subbase station, after this dominant base obtains the position of this first user device, when this location server finds that this first user device is positioned at the subcovering district at this first subbase station, this distribution of this dominant base transmission transfer resource and one first user's device information are to this first subbase station, and this dominant base sends a control transfer signal to this first user device, so that this first user device is via this first subbase station transmission and reception data.
23. the method for mobile communication as claimed in claim 22, before wherein this first user was installed on and receives this control transfer signal, this dominant base detected and confirms whether first user's device is positioned at the communication range at this first subbase station really.
24. the method for mobile communication as claimed in claim 22, after wherein this first user device received this control transfer signal, discovery can't be carried out the control transfer, and then this first user device is replied this dominant base control and shifted failure.
Applications Claiming Priority (4)
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| US16766409P | 2009-04-08 | 2009-04-08 | |
| US61/167,664 | 2009-04-08 | ||
| US16841309P | 2009-04-10 | 2009-04-10 | |
| US61/168,413 | 2009-04-10 |
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| CN101860918A true CN101860918A (en) | 2010-10-13 |
| CN101860918B CN101860918B (en) | 2013-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010164036 Expired - Fee Related CN101860918B (en) | 2009-04-08 | 2010-04-08 | Method of mobile communication and system thereof |
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| CN (1) | CN101860918B (en) |
| TW (1) | TWI424760B (en) |
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Also Published As
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| CN101860918B (en) | 2013-02-06 |
| TW201129144A (en) | 2011-08-16 |
| TWI424760B (en) | 2014-01-21 |
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