CN101489303B - Method, base station and mobile station for sharing common control channel among multiple base stations - Google Patents
Method, base station and mobile station for sharing common control channel among multiple base stations Download PDFInfo
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- CN101489303B CN101489303B CN2008100327855A CN200810032785A CN101489303B CN 101489303 B CN101489303 B CN 101489303B CN 2008100327855 A CN2008100327855 A CN 2008100327855A CN 200810032785 A CN200810032785 A CN 200810032785A CN 101489303 B CN101489303 B CN 101489303B
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Abstract
The present invention discloses a method for sharing common control channel by a plurality of base stations, a base station and a mobile station thereof. In the method for sharing common control channel by the a plurality of base stations according to the invention, the mobile station can be recognized by two or a plurality of adjacent BSs firstly in the overlapped coverage areas. Then the mobile station is established with the common control channel. Or two or a plurality of adjacent BSs firstly establish a common control channel, and when a mobile station enters the overlapped coverage area, the mobile station communicates with the plurality of base stations through the established common control channels. Simultaneously the invention also provides a service base station, adjacent base station and mobile station for the invention.
Description
Technical field
The present invention relates to moving communicating field, more specifically, relate to a kind of many base stations and share Common Control Channel method, base station and travelling carriage.
Background technology
IMT-Advanced (senior international mobile communication) next generation mobile networks is had higher requirement to power system capacity.Some standardization colonies or organize and develop some drafts energetically and satisfy these requirements can receive publicity in the IMT-Advanced evaluation process to expect these drafts.As replenishing of IEEE 802.16 standards, started IEEE 802.16m task groups recently, so that advanced air interface technologies to be provided, thereby realize the raising of operating characteristics in the licensed band, its target is the various requirement that satisfies in the IMT-Advanced next generation mobile networks the sub-district.
Along with being the development of the various technology of target, require neighbor bss (base station) to cooperate each other to adopt these new technologies with the IMT-Advanced next generation mobile networks.The state information (SINR etc.) of MS (travelling carriage), report, request etc. no longer are only to be used by the BS under it, also need be shared by a plurality of other BS simultaneously.Therefore, problem is how these information are forwarded to other related BS.
At present, MS can only be sent to its state information and request etc. the BS under it.This BS can be forwarded to neighbor cell with these information by backbone network.Do like this and caused the stand-by period (latency) problem, and increased the extra process burden at BS and MS place.In addition, pass the response of neighbor bss equally back by backbone network.
Fig. 1 shows the example that MS switches (MS handover).At first, the BS of MS under it sends HO (switching) request (step 1.).Serving BS broadcasts must be held consultation with neighbor bss, to check the possible candidate of target BS.In this operating period, serving BS broadcasts sends pre-notice request by backbone network to neighbor bss, wherein carries the MS state information, and its concrete flow process is: serving BS broadcasts sends the pre-notice request of HO to service WAC (Radio Access Controller) (step 2.); Serve WAC then and transmit the pre-notice request of HO to target WAC (step 3.) by backbone network, data-message might experience IP encapsulation and route time delay in this transport process; At last, target WAC sends the pre-notice request of HO to target BS (step 4.).Requested neighbor bss is beamed back response and is optimized etc. for HO time that target WAC (step 5.), described response comprise service level prediction, estimation and HO.Target WAC sends message to service WAC (step 6.) by backbone network, serves WAC then message is continued to send to serving BS broadcasts (step 7.).Obtain feedback from target BS after, serving BS broadcasts can send it back MS (step 8.) with the HO response.Although MS is positioned within the coverage and direct communication distance of candidate target BS, still need at first receives and transmit the state information of this MS and switch intention by the MS under it.From message flow, the state information of MS and the intention of switching will reach encapsulation/decapsulation time delay that target BS experiences IP possibly, route time delay etc., do like this and caused the stand-by period (latency) problem, and increased the extra process burden at BS and MS place.
Summary of the invention
The present invention proposes a kind of many base stations and share method, serving BS, neighbours base station and the travelling carriage of (up/descending) Common Control Channel, wherein a plurality of base stations can monitor and receive the MS uplink control message transmission by this Common Control Channel.Like this, neighbor bss can obtain some MS information (as SINR, HO request etc.) easily, directly and apace, and no longer needs to obtain these information from the serving BS broadcasts of this MS.A plurality of BS can receive the control information of MS by this Channel Transmission.Can regard this transmission as up broadcasting, MS broadcasts its message to a plurality of BS thus.The present invention has made full use of the signal broadcasting characteristic, and need not extra bandwidth consumption.For down link, can there be the Common Control Channel of sharing by a plurality of BS equally, wherein neighbor bss can be sent to control information related MS.
According to first scheme of the present invention, propose a kind of many base stations and shared the Common Control Channel method, may further comprise the steps: the overlapping covered interior travelling carriage that identifies two or more base stations; Notify the described travelling carriage of serving BS of described travelling carriage be in overlapping covered in; Described serving BS is set up Common Control Channel with the neighbours' base station negotiate that covers described travelling carriage; And described serving BS is notified to described travelling carriage with the information relevant with Common Control Channel.
According to alternative plan of the present invention, propose a kind of many base stations and shared the Common Control Channel method, may further comprise the steps: adjacent base station consults to set up Common Control Channel; Identify the overlapping covered interior travelling carriage of two or more base stations; Notify the described travelling carriage of serving BS of described travelling carriage be in overlapping covered in; And described serving BS is notified to described travelling carriage with the information relevant with Common Control Channel.
Preferably, the step that identifies the travelling carriage in two or more base stations overlapping covered comprises: described travelling carriage detects pilot signal or other id signals of the base station in the neighbor cell; According to detected pilot signal or other id signals, judge whether adjacent base station exists; And when definite adjacent base station existed, described travelling carriage was given the serving BS of oneself with detected signal, adjacent base station sign and signal quality reporting.
Preferably, the step that identifies the travelling carriage in two or more base stations overlapping covered comprises: described travelling carriage sends upstream data or Perodic ranging signal; Upstream data or the Perodic ranging signal that described travelling carriage sends detected in base station in the neighbor cell of described travelling carriage; When the base station in the neighbor cell of described travelling carriage detects upstream data that described travelling carriage sends or Perodic ranging signal, the serving BS that the base station in the neighbor cell of described travelling carriage is notified to described travelling carriage with the mobile station identification and the signal quality of detected described travelling carriage.
Preferably, described serving BS comprises with the step that the neighbours' base station negotiate that covers described travelling carriage is set up Common Control Channel: described serving BS carries out resource allocation at described travelling carriage, simultaneously resource allocation result is notified to the neighbours base station that covers described travelling carriage; And described neighbours base station distributes identical resource according to the state information of self, sets up described Common Control Channel.
Preferably, described serving BS also comprises with the step that the neighbours' base station negotiate that covers described travelling carriage is set up Common Control Channel: described neighbours base station is determined to distribute identical resource according to the state information of self, and refusal adds described Common Control Channel.
Preferably, described serving BS and the neighbours' base station negotiate that the covers described travelling carriage step of setting up Common Control Channel comprises: described serving BS is notified to the neighbours base station that covers described travelling carriage with the allowable resource of self; The base station selected allowable resource that allows separately of described neighbours, and feed back to described serving BS; And described serving BS is according to the feedback result of each neighbours base station, selects the common allowable resource that allows in all neighbours base stations to carry out resource allocation, sets up described Common Control Channel, and resource allocation result is notified to each neighbours base station.
Preferably, the step that adjacent base station consults to set up Common Control Channel comprises: resource allocation is carried out at overlapping covered in base station, simultaneously resource allocation result is notified to and above-mentioned overlapping covered relevant neighbours base station; And described neighbours base station distributes identical resource according to the state information of self, sets up described Common Control Channel.
Preferably, the step that Common Control Channel is set up in the adjacent base station negotiation also comprises: described neighbours base station is determined to distribute identical resource according to the state information of self, and refusal adds described Common Control Channel.
Preferably, the adjacent base station step of consulting to set up Common Control Channel comprises: base station is notified to other neighbours base stations with the allowable resource of self; The base station selected allowable resource that allows separately of described neighbours, and feed back to a described base station; And a described base station is according to the feedback result of each neighbours base station, selects the common allowable resource that allows in all neighbours base stations to carry out resource allocation, sets up described Common Control Channel, and resource allocation result is notified to each neighbours base station.
Preferably, described resource comprises at least one in time resource, frequency resource and the coding resource.
Preferably, described Common Control Channel is up Common Control Channel.
Preferably, the shared Common Control Channel method in described many base stations also comprises: each base station of up Common Control Channel that described travelling carriage utilization has been set up and the described travelling carriage of overlapping covering communicates.
Preferably, described Common Control Channel is descending Common Control Channel.More preferably, the shared Common Control Channel method in described many base stations also comprises: described travelling carriage receives the information on the descending Common Control Channel of having set up; And each base station of the described travelling carriage of overlapping covering utilizes descending Common Control Channel and the described travelling carriage set up to communicate.
Preferably, described many base stations are shared the Common Control Channel method and are also comprised: described serving BS and described neighbours base station according to described travelling carriage move and changes in channel conditions at least one, described Common Control Channel is carried out the dynamic negotiation adjustment; And described serving BS is responsible for giving described neighbours base station and described travelling carriage with the change notification of Common Control Channel.
According to third party's case of the present invention, a kind of base station has been proposed, comprising: receiving element is used to receive the overlapping covered interior relevant notice that whether is in two or more base stations with the travelling carriage that belongs to described base station; The Common Control Channel unit is used for setting up Common Control Channel at belonging to described base station and being positioned at overlapping covered travelling carriage or overlapping covered at described base station and neighbours base station with neighbours' base station negotiate; And notification unit, the information relevant with Common Control Channel is notified to belongs to described base station and be positioned at overlapping covered described travelling carriage.
Preferably, described base station also comprises: adjacent sub-district travelling carriage detecting unit, be used to detect upstream data or the Perodic ranging signal that adjacent sub-district travelling carriage sends, described adjacent sub-district travelling carriage is represented the travelling carriage in the neighbor cell, wherein said notification unit also is used for when described adjacent sub-district travelling carriage detecting unit detects upstream data that adjacent sub-district travelling carriage sends or Perodic ranging signal, send described adjacent sub-district travelling carriage to adjacent sub-district serving BS and be in notice in two or more base stations overlapping covered, and the mobile station identification and the signal quality of detected described adjacent sub-district travelling carriage be notified to described adjacent sub-district serving BS, described adjacent sub-district serving BS is represented the base station under the travelling carriage of described adjacent sub-district.
Preferably, at belonging to described base station and being positioned at overlapping covered travelling carriage or overlapping covered at described base station and neighbours base station, described Common Control Channel unit carries out resource allocation, resource allocation result is notified to by described notification unit covers described travelling carriage or described overlapping covered neighbours base station simultaneously.
Preferably, described receiving element also receives the resource allocation result from the neighbours base station, and described Common Control Channel unit distributes identical resource according to the state information of base station self, sets up described Common Control Channel.
Preferably, described common control unit is determined to distribute identical resource according to the state information of base station self, and refusal adds described Common Control Channel.
Preferably, described Common Control Channel unit with the allowable resource of base station self be notified to cover described travelling carriage or with described overlapping covered relevant neighbours base station; Described receiving element receives the feedback result of described neighbours base station; And described Common Control Channel unit is according to the feedback result of each neighbours base station, select the common allowable resource that allows in all neighbours base stations to carry out resource allocation, set up described Common Control Channel, and resource allocation result is notified to each neighbours base station by described notification unit.
Preferably, described receiving element also receives the allowable resource notice from the neighbours base station; The allowable resource that described Common Control Channel unit selects the base station self to be allowed, and, selection result is fed back to described neighbours base station by notification unit.
Preferably, described resource comprises at least one in time resource, frequency resource and the coding resource.
Preferably, described Common Control Channel is up Common Control Channel.
Preferably, described Common Control Channel is descending Common Control Channel.More preferably, described base station utilizes descending Common Control Channel and the described travelling carriage set up to communicate.
Preferably, described Common Control Channel unit according to described travelling carriage move and changes in channel conditions at least one, with the neighbours base station described Common Control Channel is carried out the dynamic negotiation adjustment; And described notification unit is given described neighbours base station and described travelling carriage with the change notification of Common Control Channel.
According to cubic case of the present invention, a kind of travelling carriage has been proposed, comprising: adjacent cell base station detecting unit is used to detect pilot signal or other id signals of adjacent cell base station; Judging unit is used for according to detected pilot signal or other id signals, judges whether adjacent cell base station exists; And notification unit, be used for when definite adjacent cell base station exists, send this travelling carriage to oneself serving BS and be in notice in two or more base stations overlapping covered, and give the serving BS of oneself detected signal, adjacent cell base station sign and signal quality reporting.
Usually, the MS that only is positioned at a plurality of BS overlapped coverages zone just has Common Control Channel, because MS only in this way can communicate with a plurality of BS.A plurality of MS can share a Common Control Channel, and whether to belong to identical BS irrelevant with these MS, and related BS can cooperate each other and distribute Common Control Channel, and makes it to these MS as seen.
Common Control Channel has made full use of the signal broadcasting characteristic in the up link.A plurality of BS all can receive MS ascending control channel transmission (status report, request etc.).Thus, can between a plurality of BS, share useful MS information easily, fast and effectively, help the cooperation of a plurality of BS, as quick switching, interference eliminated etc. at same MS.
The present invention has provided up Common Control Channel has been used for the example of switching fast.Utilize this up Common Control Channel, target BS can receive the HO request from the MS in the neighbor cell immediately, and need not to wait for the information from serving BS broadcasts, and quick response is made in this HO request.Therefore, the present invention proposes a kind of quick handover scheme of novelty, utilized between MS and target BS, communicated by letter by the direct control information of up Common Control Channel.
Common Control Channel proposed by the invention can be shared and exchange MS control information easier between a plurality of BS, fast and effectively.
Description of drawings
By below in conjunction with description of drawings the preferred embodiments of the present invention, will make above-mentioned and other purpose of the present invention, feature and advantage clearer, wherein:
Fig. 1 shows the example that MS switches (MS handover).
Fig. 2 shows the schematic diagram according to Common Control Channel of the present invention.
Fig. 3 a shows according to first embodiment of the invention, sets up the flow chart of up Common Control Channel, and wherein two or more neighbor bss recognize travelling carriage in its overlapping overlay area, set up up Common Control Channel for this travelling carriage then.
Fig. 3 b shows according to second embodiment of the invention, sets up the flow chart of up Common Control Channel, wherein two or more neighbor bss are set up up Common Control Channel earlier, in travelling carriage enters its overlapping overlay area, up Common Control Channel and a plurality of base station communication of travelling carriage by having set up.
Fig. 4 a shows according to third embodiment of the invention, sets up the flow chart of descending Common Control Channel, and wherein two or more neighbor bss recognize travelling carriage in its overlapping overlay area, set up descending Common Control Channel for this travelling carriage then.
Fig. 4 b shows according to fourth embodiment of the invention, sets up the flow chart of descending Common Control Channel, wherein two or more neighbor bss are set up descending Common Control Channel earlier, in travelling carriage enters its overlapping overlay area, descending Common Control Channel and the mobile communications of each base station by having set up.
Fig. 5 shows so that exchange the example of switching fast with the control messages of up Common Control Channel.
Fig. 6 shows the block diagram of BS proposed by the invention 600.
Fig. 7 shows the block diagram of MS proposed by the invention 700.
Embodiment
To a preferred embodiment of the present invention will be described in detail, having omitted in the description process is unnecessary details and function for the present invention with reference to the accompanying drawings, obscures to prevent that the understanding of the present invention from causing.
Fig. 2 shows the schematic diagram according to Common Control Channel of the present invention.
MS is positioned at the overlapping region of a plurality of BS coverages, and wherein these BS all can receive the MS uplink.By the cooperation between BS, set up Common Control Channel, thereby make related a plurality of BS share common time-frequency fields.A plurality of MS can share same Common Control Channel, and different MS can use TDMA, CDMA or additive method to avoid conflict in this channel.For example, CDMA Channel is an example in the various channels that can avoid conflict preferably.Similarly, descending Common Control Channel also is possible, and wherein any related BS all can send message to any related MS by this Common Control Channel.
The MS uplink control signal uses BSID (sign) to discern its communication counterpart, for example, can be at message, identify among the related BS one, a plurality of or whole.If the ID that BS receives not with himself is the message of destination, this BS can ignore this message.
Whether each BS can detect upstream data or the cycle upward signal of MS, still be in the coverage of himself to know this MS.When MS moves and/or during changes in channel conditions, may need carry out the dynamic negotiation adjustment to Common Control Channel, related MS and BS equally.When Common Control Channel changes, be responsible for BS and the MS of this change notification to other by a BS.
Fig. 3 a shows according to first embodiment of the invention, sets up the flow chart of up Common Control Channel, and wherein two or more neighbor bss recognize travelling carriage in its overlapping overlay area, set up up Common Control Channel for this travelling carriage then.
Shown in Fig. 3 a, at first identify the travelling carriage (step S301) of the overlapping region that is positioned at two or more BS, if find to exist such travelling carriage, then notification service BS (step S302).There are two kinds of possible RM: MS initiatively to discern or neighbours BS identification.
■ MS initiatively discerns: travelling carriage detects pilot signal (preabmle) or other id signals of neighbor cell base station, exists when detecting adjacent base station, and the serving BS broadcasts of oneself given detected signal, adjacent base station sign and signal quality reporting by travelling carriage.
■ neighbours BS identification: MS sends upstream data or Perodic ranging signal (periodic ranging), when MS is in the coverage of neighbor cell, neighbours BS can detect signal, thereby learn the not existence of one's own travelling carriage, neighbours BS is notified to serving BS broadcasts with detected travelling carriage ID and signal quality.Serving BS broadcasts and neighbours BS consult to set up up Common Control Channel (step S303):
Zero serving BS broadcasts Resources allocation (resources such as time, frequency, coding) is to the travelling carriage in overlapping covered, simultaneously the resource allocation conditions notice is covered other neighbor bss of this travelling carriage, neighbor bss is according to own state information or distribute same resource to set up up Common Control Channel, perhaps this up Common Control Channel of refusal adding; Perhaps
Zero serving BS broadcasts notifies neighbor bss oneself can distribute to the resource of up Common Control Channel earlier, neighbor bss is according to the state information of oneself, therefrom select the resource of distributing to up Common Control Channel of permission separately, feed back to serving BS broadcasts then, serving BS broadcasts selects everybody to set up up Common Control Channel in the total assignable resource according to the feedback of each neighbor bss, and the resource allocation result with up Common Control Channel is notified to each neighbor bss then.
At last, the up Common Control Channel and a plurality of BS that set up of serving BS broadcasts notice travelling carriage utilization carries out (step S304) alternately.
Fig. 3 b shows according to second embodiment of the invention, sets up the flow chart of up Common Control Channel, wherein two or more neighbor bss are set up up Common Control Channel earlier, in travelling carriage enters its overlapping overlay area, up Common Control Channel and a plurality of base station communication of travelling carriage by having set up.
Shown in Fig. 3 b, whether no matter have travelling carriage to be in the overlapping covered of two or more BS, neighbor bss consults to set up up Common Control Channel (step S311) earlier:
01 BS Resources allocation (resources such as time, frequency, coding) are given overlapping covered, simultaneously with resource allocation conditions notice and above-mentioned overlapping covered other relevant neighbor bss, neighbor bss is according to own state information or distribute same resource to set up up Common Control Channel, perhaps this up Common Control Channel of refusal adding; Perhaps
01 BS notify neighbor bss oneself can distribute to the resource of up Common Control Channel earlier, neighbor bss is according to the state information of oneself, therefrom select the resource of distributing to up Common Control Channel of permission separately, feed back to a described BS then, a described BS selects everybody to set up up Common Control Channel in the total assignable resource according to the feedback of each neighbor bss, and the resource allocation result with up Common Control Channel is notified to each neighbor bss then.
When identifying travelling carriage and be positioned at two or more BS overlapping covered (step S312), notify the serving BS broadcasts (step S313) of this travelling carriage.(step S301 and S302) is similar for method described in above-mentioned RM and the first embodiment of the invention, and be succinct in order to compose a piece of writing, and omits detailed description at this.
At last, serving BS broadcasts notifies this travelling carriage to use up Common Control Channel of having distributed communicate by letter with a plurality of BS (step S314).
Fig. 4 a shows according to third embodiment of the invention, sets up the flow chart of descending Common Control Channel, and wherein two or more neighbor bss recognize travelling carriage in its overlapping overlay area, set up descending Common Control Channel for this travelling carriage then.
Shown in Fig. 4 a, at first identify the travelling carriage (step S401) of the overlapping region that is positioned at two or more BS, if find to exist such travelling carriage, then notification service BS (step S402).There are two kinds of possible RM: MS initiatively to discern or neighbours BS identification.
■ MS initiatively discerns: travelling carriage detects pilot signal (preabmle) or other id signals of neighbor cell base station, exists when detecting adjacent base station, and the serving BS broadcasts of oneself given detected signal, adjacent base station sign and signal quality reporting by travelling carriage.
■ neighbours BS identification: MS sends upstream data or Perodic ranging signal (periodic ranging), when MS is in the coverage of neighbor cell, neighbours BS can detect signal, thereby learn the not existence of one's own travelling carriage, neighbours BS is notified to serving BS broadcasts with detected travelling carriage ID and signal quality.Serving BS broadcasts and neighbours BS consult to set up descending Common Control Channel (step S403):
Zero serving BS broadcasts Resources allocation (resources such as time, frequency, coding) is to the travelling carriage in overlapping covered, simultaneously the resource allocation conditions notice is covered other neighbor bss of this travelling carriage, neighbor bss is according to own state information or distribute same resource to set up descending Common Control Channel, perhaps this descending Common Control Channel of refusal adding; Perhaps
Zero serving BS broadcasts notifies neighbor bss oneself can distribute to the resource of descending Common Control Channel earlier, neighbor bss is according to the state information of oneself, therefrom select the resource of distributing to descending Common Control Channel of permission separately, feed back to serving BS broadcasts then, serving BS broadcasts selects everybody to set up descending Common Control Channel in the total assignable resource according to the feedback of each neighbor bss, and the resource allocation result with descending Common Control Channel is notified to each neighbor bss then.
At last, the travelling carriage that serving BS broadcasts notice is positioned at the overlapping region receives the information on the descending Common Control Channel, and serving BS broadcasts and the neighbours BS that covers this travelling carriage utilize and set up good descending Common Control Channel and carry out (step S404) alternately with the travelling carriage that is positioned at the overlapping region.
Fig. 4 b shows according to fourth embodiment of the invention, sets up the flow chart of descending Common Control Channel, wherein two or more neighbor bss are set up descending Common Control Channel earlier, in travelling carriage enters its overlapping overlay area, descending Common Control Channel and the mobile communications of each base station by having set up.
Shown in Fig. 4 b, whether no matter have travelling carriage to be in the overlapping covered of two or more BS, neighbor bss consults to set up descending Common Control Channel (step S411) earlier:
01 BS Resources allocation (resources such as time, frequency, coding) are given overlapping covered, simultaneously with resource allocation conditions notice and above-mentioned overlapping covered other relevant neighbor bss, neighbor bss is according to own state information or distribute same resource to set up descending Common Control Channel, perhaps this descending Common Control Channel of refusal adding; Perhaps
01 BS notify neighbor bss oneself can distribute to the resource of descending Common Control Channel earlier, neighbor bss is according to the state information of oneself, therefrom select the resource of distributing to descending Common Control Channel of permission separately, feed back to a described BS then, a described BS selects everybody to set up descending Common Control Channel in the total assignable resource according to the feedback of each neighbor bss, and the resource allocation result with descending Common Control Channel is notified to each neighbor bss then.
When identifying travelling carriage and be positioned at two or more BS overlapping covered (step S412), notify the serving BS broadcasts (step S413) of this travelling carriage.(step S401 and S402) is similar for method described in above-mentioned RM and the third embodiment of the invention, and be succinct in order to compose a piece of writing, and omits detailed description at this.
At last, the travelling carriage that serving BS broadcasts notice is positioned at the overlapping region receives the information on the descending Common Control Channel, and serving BS broadcasts and the neighbours BS that covers this travelling carriage utilize and set up good descending Common Control Channel and carry out (step S414) alternately with the travelling carriage that is positioned at the overlapping region.
After up/descending Common Control Channel is set up,, may need Common Control Channel, related MS and BS are carried out the dynamic negotiation adjustment if MS moves and/or channel condition changes.In this case, can carry out Common Control Channel once more and consult establishment step (S303, S311, S403 or S411), thereby realize Common Control Channel, related MS and the dynamic negotiation adjustment of BS; But, it should be noted that the Common Control Channel of having set up is still available before finishing the negotiation establishment step of carrying out once more.
Fig. 5 shows so that exchange the example of switching fast with the control messages of up Common Control Channel.MS at first sends the HO request (step 1.) with its state information in up Common Control Channel.Because this message is transmitted in up Common Control Channel, BS and neighbor bss under this MS can receive this message.The neighbor bss that will accept this MS that is moving will feed back a response (step 2.), and this response may comprise service level prediction, estimate HO time and HO optimization etc.MS obtains the feedback (may for a plurality of) from other BS, and estimates that it switches the destination.Then, the BS transmission of MS under it has the switching of this neighbor bss (switching destination BS) feedback information with reference to (step 3.).BS under this MS sends the HO response to MS, and simultaneously to WAC send a notification message (HO notice) (step 4.).
Fig. 6 shows the block diagram of BS proposed by the invention 600.
Can be used as serving BS broadcasts or neighbours BS according to BS 600 of the present invention.For easy, the assembly of serving BS broadcasts and neighbours BS all be included among the BS 600, and be described in the lump at this.But, should be understood that serving BS broadcasts and neighbours BS can use separately, and can only comprise part assembly shown in Figure 6 rather than whole.In addition, make theme of the present invention become unclear, omitted other assemblies that have nothing to do with the present invention in the base station here, only show assembly related to the present invention in order to prevent other guide.
As shown in Figure 6, as serving BS broadcasts, BS 600 of the present invention can comprise: receiving element 610 is used to receive the overlapping covered interior relevant notice that whether is in two or more BS with the MS that belongs to serving BS broadcasts; Common Control Channel unit 620 is used for consulting to set up up/descending Common Control Channel at belonging to serving BS broadcasts and being positioned at overlapping covered MS or overlapping covered at serving BS broadcasts and neighbours BS with neighbours BS; And notification unit 630, the information relevant with up/descending Common Control Channel is notified to belongs to serving BS broadcasts and be positioned at overlapping covered MS.
Neighbours BS identifies the MS of the overlapping region that is positioned at two or more BS, and notifies the serving BS broadcasts of this travelling carriage.For realizing above-mentioned functions, neighbours BS can comprise: adjacent sub-district MS detecting unit 650 is used to detect upstream data or the Perodic ranging signal that adjacent sub-district MS sends.Here, adjacent sub-district MS represents is MS in the sub-district, serving BS broadcasts place.When the notification unit 630 of neighbours BS detects upstream data that adjacent sub-district MS sends or Perodic ranging signal at adjacent sub-district MS detecting unit 650, send adjacent sub-district MS to serving BS broadcasts and be in notice in two or more BS overlapping covered, and MS sign and the signal quality of detected adjacent sub-district MS is notified to serving BS broadcasts.In addition, if only as neighbours BS, can omit receiving element 610, promptly neighbours BS can only comprise adjacent sub-district MS detecting unit 650, Common Control Channel unit 610 and notification unit 630.
Serving BS broadcasts and neighbours BS consult to set up up/descending Common Control Channel:
The Common Control Channel unit 620 of zero serving BS broadcasts is at belonging to serving BS broadcasts 600 and being positioned at overlapping covered MS or overlapping covered at serving BS broadcasts and neighbours BS, carry out resource allocation (resources such as time, frequency, coding), resource allocation result is notified to by notification unit 630 covers MS or overlapping covered neighbours BS simultaneously.The resource allocation result that the receiving element 610 of neighbours BS receives from serving BS broadcasts 600.The Common Control Channel unit 620 of neighbours BS perhaps distributes identical resource according to the state information of neighbours BS self, sets up up/descending Common Control Channel, perhaps determines to distribute identical resource, and refusal adds up/descending Common Control Channel.
Perhaps
The Common Control Channel unit 620 of zero serving BS broadcasts with the allowable resource of serving BS broadcasts self be notified to cover MS or with overlapping covered relevant neighbours BS.The receiving element 610 of neighbours BS receives the allowable resource notice from neighbours BS, the allowable resource that the Common Control Channel unit 620 of each neighbours BS selects neighbours BS self to be allowed, and, selection result is fed back to serving BS broadcasts by notification unit 630.The receiving element 610 of serving BS broadcasts receives the feedback result of neighbours BS, the Common Control Channel unit 620 of serving BS broadcasts is according to the feedback result of each neighbours BS, select the common allowable resource that allows of all neighbours BS to carry out resource allocation, set up up/descending Common Control Channel, and resource allocation result is notified to each neighbours BS by notification unit 630.
In addition, serving BS broadcasts (Common Control Channel unit 620) also according to MS move and changes in channel conditions at least one, with neighbours BS up/descending Common Control Channel is carried out the dynamic negotiation adjustment; And give neighbours BS and MS with the change notification of up/descending Common Control Channel by notification unit 630.
As described in Fig. 3 a～4b, the present invention can also adopt another kind of RM: MS initiatively discerns.For this purpose, travelling carriage according to the present invention can be as shown in Figure 7.
Fig. 7 shows the block diagram of MS proposed by the invention 700.
As shown in Figure 7, MS 700 according to the present invention comprises: neighbour region BS detecting unit 710 is used to detect pilot signal or other id signals of neighbour region BS; Judging unit 720 is used for according to detected pilot signal or other id signals, judges whether neighbour region BS exists; And notification unit 730, be used for when definite neighbour region BS exists, send this MS to oneself serving BS broadcasts and be in notice in two or more BS overlapping covered, and give the serving BS broadcasts of oneself detected signal, neighbour region BS sign and signal quality reporting.Here, the expression of neighbour region BS is equivalent to neighbours BS.
So far invention has been described in conjunction with the preferred embodiments.Should be appreciated that those skilled in the art can carry out various other change, replacement and interpolations under the situation that does not break away from the spirit and scope of the present invention.Therefore, scope of the present invention is not limited to above-mentioned specific embodiment, and should be limited by claims.
Claims (54)
1. the Common Control Channel method is shared in base station more than a kind, may further comprise the steps:
Identify the overlapping covered interior travelling carriage of two or more base stations;
Notify the described travelling carriage of serving BS of described travelling carriage be in overlapping covered in;
Described serving BS is set up Common Control Channel with the neighbours' base station negotiate that covers described travelling carriage; And
Described serving BS is notified to described travelling carriage with the information relevant with Common Control Channel,
Wherein said serving BS comprises with the step that the neighbours' base station negotiate that covers described travelling carriage is set up Common Control Channel:
Described serving BS carries out resource allocation at described travelling carriage, simultaneously resource allocation result is notified to the neighbours base station that covers described travelling carriage; And
Identical resource is distributed according to the state information of self in described neighbours base station, sets up described Common Control Channel.
2. the Common Control Channel method is shared in many base stations according to claim 1, it is characterized in that the step that described serving BS and the neighbours' base station negotiate that covers described travelling carriage are set up Common Control Channel also comprises:
Described neighbours base station is determined to distribute identical resource according to the state information of self, and refusal adds described Common Control Channel.
3. the Common Control Channel method is shared in many base stations according to claim 1, and the step that it is characterized in that identifying the travelling carriage in two or more base stations overlapping covered comprises:
Described travelling carriage detects pilot signal or other id signals of neighbours base station;
According to detected pilot signal or other id signals, judge whether the neighbours base station exists; And
When definite neighbours base station existed, the serving BS of oneself given detected signal, neighbours' Base Station Identification and signal quality reporting by described travelling carriage.
4. the Common Control Channel method is shared in many base stations according to claim 1, and the step that it is characterized in that identifying the travelling carriage in two or more base stations overlapping covered comprises:
Described travelling carriage sends upstream data or Perodic ranging signal;
Upstream data or the Perodic ranging signal that described travelling carriage sends detected in the neighbours base station of described travelling carriage;
When the neighbours base station of described travelling carriage detects upstream data that described travelling carriage sends or Perodic ranging signal, the serving BS that the neighbours base station of described travelling carriage is notified to described travelling carriage with the mobile station identification and the signal quality of detected described travelling carriage.
5. the Common Control Channel method is shared in many base stations according to claim 1, it is characterized in that described resource comprises at least one in time resource, frequency resource and the coding resource.
6. the Common Control Channel method is shared in many base stations according to claim 1, it is characterized in that described Common Control Channel is up Common Control Channel.
7. the Common Control Channel method is shared in many base stations according to claim 6, it is characterized in that also comprising:
Each base station of up Common Control Channel that described travelling carriage utilization has been set up and the described travelling carriage of overlapping covering communicates.
8. the Common Control Channel method is shared in many base stations according to claim 1, it is characterized in that described Common Control Channel is descending Common Control Channel.
9. the Common Control Channel method is shared in many base stations according to claim 8, it is characterized in that also comprising:
Described travelling carriage receives the information on the descending Common Control Channel of having set up; And
Each base station of the described travelling carriage of overlapping covering utilizes descending Common Control Channel and the described travelling carriage set up to communicate.
10. share the Common Control Channel method according to the described many base stations of one of claim 1～9, it is characterized in that also comprising:
Described serving BS and described neighbours base station according to described travelling carriage move and changes in channel conditions at least one, described Common Control Channel is carried out the dynamic negotiation adjustment; And
Described serving BS is responsible for giving described neighbours base station and described travelling carriage with the change notification of Common Control Channel.
11. the Common Control Channel method is shared in base station more than a kind, may further comprise the steps:
Identify the overlapping covered interior travelling carriage of two or more base stations;
Notify the described travelling carriage of serving BS of described travelling carriage be in overlapping covered in;
Described serving BS is set up Common Control Channel with the neighbours' base station negotiate that covers described travelling carriage; And
Described serving BS is notified to described travelling carriage with the information relevant with Common Control Channel,
Wherein said serving BS comprises with the step that the neighbours' base station negotiate that covers described travelling carriage is set up Common Control Channel:
Described serving BS is notified to the neighbours base station that covers described travelling carriage with the allowable resource of self;
The base station selected allowable resource that allows separately of described neighbours, and feed back to described serving BS; And
Described serving BS selects the common allowable resource that allows in all neighbours base stations to carry out resource allocation according to the feedback result of each neighbours base station, sets up described Common Control Channel, and resource allocation result is notified to each neighbours base station.
12. the Common Control Channel method is shared in many base stations according to claim 11, the step that it is characterized in that identifying the travelling carriage in two or more base stations overlapping covered comprises:
Described travelling carriage detects pilot signal or other id signals of neighbours base station;
According to detected pilot signal or other id signals, judge whether the neighbours base station exists; And
When definite neighbours base station existed, the serving BS of oneself given detected signal, neighbours' Base Station Identification and signal quality reporting by described travelling carriage.
13. the Common Control Channel method is shared in many base stations according to claim 11, the step that it is characterized in that identifying the travelling carriage in two or more base stations overlapping covered comprises:
Described travelling carriage sends upstream data or Perodic ranging signal;
Upstream data or the Perodic ranging signal that described travelling carriage sends detected in the neighbours base station of described travelling carriage;
When the neighbours base station of described travelling carriage detects upstream data that described travelling carriage sends or Perodic ranging signal, the serving BS that the neighbours base station of described travelling carriage is notified to described travelling carriage with the mobile station identification and the signal quality of detected described travelling carriage.
14. the Common Control Channel method is shared in many base stations according to claim 11, it is characterized in that described resource comprises at least one in time resource, frequency resource and the coding resource.
15. the Common Control Channel method is shared in many base stations according to claim 11, it is characterized in that described Common Control Channel is up Common Control Channel.
16. the Common Control Channel method is shared in many base stations according to claim 15, it is characterized in that also comprising:
Each base station of up Common Control Channel that described travelling carriage utilization has been set up and the described travelling carriage of overlapping covering communicates.
17. the Common Control Channel method is shared in many base stations according to claim 11, it is characterized in that described Common Control Channel is descending Common Control Channel.
18. the Common Control Channel method is shared in many base stations according to claim 17, it is characterized in that also comprising:
Described travelling carriage receives the information on the descending Common Control Channel of having set up; And
Each base station of the described travelling carriage of overlapping covering utilizes descending Common Control Channel and the described travelling carriage set up to communicate.
19. share the Common Control Channel method according to the described many base stations of one of claim 11～18, it is characterized in that also comprising:
Described serving BS and described neighbours base station according to described travelling carriage move and changes in channel conditions at least one, described Common Control Channel is carried out the dynamic negotiation adjustment; And
Described serving BS is responsible for giving described neighbours base station and described travelling carriage with the change notification of Common Control Channel.
20. the Common Control Channel method is shared in base station more than a kind, may further comprise the steps:
Neighbours' base station negotiate is set up Common Control Channel;
Identify the overlapping covered interior travelling carriage of two or more base stations;
Notify the described travelling carriage of serving BS of described travelling carriage be in overlapping covered in; And
Described serving BS is notified to described travelling carriage with the information relevant with Common Control Channel,
Wherein neighbours' base station negotiate step of setting up Common Control Channel comprises:
Resource allocation is carried out at overlapping covered in base station, simultaneously resource allocation result is notified to and above-mentioned overlapping covered relevant neighbours base station; And
Identical resource is distributed according to the state information of self in described neighbours base station, sets up described Common Control Channel.
21. the Common Control Channel method is shared in many base stations according to claim 20, it is characterized in that neighbours' base station negotiate sets up the step of Common Control Channel and also comprise:
Described neighbours base station is determined to distribute identical resource according to the state information of self, and refusal adds described Common Control Channel.
22. the Common Control Channel method is shared in many base stations according to claim 20, the step that it is characterized in that identifying the travelling carriage in two or more base stations overlapping covered comprises:
Described travelling carriage detects pilot signal or other id signals of neighbours base station;
According to detected pilot signal or other id signals, judge whether the neighbours base station exists; And
When definite neighbours base station existed, the serving BS of oneself given detected signal, neighbours' Base Station Identification and signal quality reporting by described travelling carriage.
23. the Common Control Channel method is shared in many base stations according to claim 20, the step that it is characterized in that identifying the travelling carriage in two or more base stations overlapping covered comprises:
Described travelling carriage sends upstream data or Perodic ranging signal;
Upstream data or the Perodic ranging signal that described travelling carriage sends detected in the neighbours base station of described travelling carriage;
When the neighbours base station of described travelling carriage detects upstream data that described travelling carriage sends or Perodic ranging signal, the serving BS that the neighbours base station of described travelling carriage is notified to described travelling carriage with the mobile station identification and the signal quality of detected described travelling carriage.
24. the Common Control Channel method is shared in many base stations according to claim 20, it is characterized in that described resource comprises at least one in time resource, frequency resource and the coding resource.
25. the Common Control Channel method is shared in many base stations according to claim 20, it is characterized in that described Common Control Channel is up Common Control Channel.
26. the Common Control Channel method is shared in many base stations according to claim 25, it is characterized in that also comprising:
Each base station of up Common Control Channel that described travelling carriage utilization has been set up and the described travelling carriage of overlapping covering communicates.
27. the Common Control Channel method is shared in many base stations according to claim 20, it is characterized in that described Common Control Channel is descending Common Control Channel.
28. the Common Control Channel method is shared in many base stations according to claim 27, it is characterized in that also comprising:
Described travelling carriage receives the information on the descending Common Control Channel of having set up; And
Each base station of the described travelling carriage of overlapping covering utilizes descending Common Control Channel and the described travelling carriage set up to communicate.
29. share the Common Control Channel method according to the described many base stations of one of claim 20～28, it is characterized in that also comprising:
Described serving BS and described neighbours base station according to described travelling carriage move and changes in channel conditions at least one, described Common Control Channel is carried out the dynamic negotiation adjustment; And
Described serving BS is responsible for giving described neighbours base station and described travelling carriage with the change notification of Common Control Channel.
30. the Common Control Channel method is shared in base station more than a kind, may further comprise the steps:
Neighbours' base station negotiate is set up Common Control Channel;
Identify the overlapping covered interior travelling carriage of two or more base stations;
Notify the described travelling carriage of serving BS of described travelling carriage be in overlapping covered in; And
Described serving BS is notified to described travelling carriage with the information relevant with Common Control Channel,
Wherein neighbours' base station negotiate step of setting up Common Control Channel comprises:
Base station is notified to other neighbours base stations with the allowable resource of self;
The base station selected allowable resource that allows separately of described neighbours, and feed back to a described base station; And
A described base station selects the common allowable resource that allows in all neighbours base stations to carry out resource allocation according to the feedback result of each neighbours base station, sets up described Common Control Channel, and resource allocation result is notified to each neighbours base station.
31. the Common Control Channel method is shared in many base stations according to claim 30, it is characterized in that described resource comprises at least one in time resource, frequency resource and the coding resource.
32. the Common Control Channel method is shared in many base stations according to claim 30, it is characterized in that described Common Control Channel is up Common Control Channel.
33. the Common Control Channel method is shared in many base stations according to claim 32, it is characterized in that also comprising:
Each base station of up Common Control Channel that described travelling carriage utilization has been set up and the described travelling carriage of overlapping covering communicates.
34. the Common Control Channel method is shared in many base stations according to claim 30, it is characterized in that described Common Control Channel is descending Common Control Channel.
35. the Common Control Channel method is shared in many base stations according to claim 34, it is characterized in that also comprising:
Described travelling carriage receives the information on the descending Common Control Channel of having set up; And
Each base station of the described travelling carriage of overlapping covering utilizes descending Common Control Channel and the described travelling carriage set up to communicate.
36. share the Common Control Channel method according to the described many base stations of one of claim 30～35, it is characterized in that also comprising:
Described serving BS and described neighbours base station according to described travelling carriage move and changes in channel conditions at least one, described Common Control Channel is carried out the dynamic negotiation adjustment; And
Described serving BS is responsible for giving described neighbours base station and described travelling carriage with the change notification of Common Control Channel.
37. a base station comprises:
Receiving element is used to receive the overlapping covered interior relevant notice that whether is in two or more base stations with the travelling carriage that belongs to described base station;
The Common Control Channel unit is used for setting up Common Control Channel at belonging to described base station and being positioned at overlapping covered travelling carriage or overlapping covered at described base station and neighbours base station with neighbours' base station negotiate; And
Notification unit is notified to the information relevant with Common Control Channel and belongs to described base station and be positioned at overlapping covered described travelling carriage,
Wherein at belonging to described base station and being positioned at overlapping covered travelling carriage or overlapping covered at described base station and neighbours base station, described Common Control Channel unit carries out resource allocation, resource allocation result is notified to by described notification unit covers described travelling carriage or described overlapping covered neighbours base station simultaneously.
38., it is characterized in that also comprising according to the described base station of claim 37:
Adjacent sub-district travelling carriage detecting unit is used to detect upstream data or the Perodic ranging signal that adjacent sub-district travelling carriage sends, and described adjacent sub-district travelling carriage is represented the travelling carriage in the neighbor cell,
Wherein said notification unit also is used for when described adjacent sub-district travelling carriage detecting unit detects upstream data that adjacent sub-district travelling carriage sends or Perodic ranging signal, send described adjacent sub-district travelling carriage to adjacent sub-district serving BS and be in notice in two or more base stations overlapping covered, and the mobile station identification and the signal quality of detected described adjacent sub-district travelling carriage be notified to described adjacent sub-district serving BS, described adjacent sub-district serving BS is represented the base station under the travelling carriage of described adjacent sub-district.
39., it is characterized in that according to the described base station of claim 37
Described receiving element also receives the resource allocation result from the neighbours base station,
Described Common Control Channel unit distributes identical resource according to the state information of base station self, sets up described Common Control Channel.
40., it is characterized in that according to the described base station of claim 39
Described common control unit is determined to distribute identical resource according to the state information of base station self, and refusal adds described Common Control Channel.
41., it is characterized in that according to the described base station of claim 37
Described resource comprises at least one in time resource, frequency resource and the coding resource.
42., it is characterized in that described Common Control Channel is up Common Control Channel according to the described base station of claim 37.
43., it is characterized in that described Common Control Channel is descending Common Control Channel according to the described base station of claim 37.
44., it is characterized in that described base station utilizes descending Common Control Channel and the described travelling carriage set up to communicate according to the described base station of claim 43.
45., it is characterized in that according to the described base station of one of claim 37～44
Described Common Control Channel unit according to described travelling carriage move and changes in channel conditions at least one, with the neighbours base station described Common Control Channel is carried out the dynamic negotiation adjustment; And
Described notification unit is given described neighbours base station and described travelling carriage with the change notification of Common Control Channel.
46. a base station comprises:
Receiving element is used to receive the overlapping covered interior relevant notice that whether is in two or more base stations with the travelling carriage that belongs to described base station;
The Common Control Channel unit is used for setting up Common Control Channel at belonging to described base station and being positioned at overlapping covered travelling carriage or overlapping covered at described base station and neighbours base station with neighbours' base station negotiate; And
Notification unit is notified to the information relevant with Common Control Channel and belongs to described base station and be positioned at overlapping covered described travelling carriage,
Wherein said Common Control Channel unit with the allowable resource of base station self be notified to cover described travelling carriage or with described overlapping covered relevant neighbours base station;
Described receiving element receives the feedback result of described neighbours base station; And
Described Common Control Channel unit is according to the feedback result of each neighbours base station, select the common allowable resource that allows in all neighbours base stations to carry out resource allocation, set up described Common Control Channel, and resource allocation result is notified to each neighbours base station by described notification unit.
47., it is characterized in that also comprising according to the described base station of claim 46:
Adjacent sub-district travelling carriage detecting unit is used to detect upstream data or the Perodic ranging signal that adjacent sub-district travelling carriage sends, and described adjacent sub-district travelling carriage is represented the travelling carriage in the neighbor cell,
Wherein said notification unit also is used for when described adjacent sub-district travelling carriage detecting unit detects upstream data that adjacent sub-district travelling carriage sends or Perodic ranging signal, send described adjacent sub-district travelling carriage to adjacent sub-district serving BS and be in notice in two or more base stations overlapping covered, and the mobile station identification and the signal quality of detected described adjacent sub-district travelling carriage be notified to described adjacent sub-district serving BS, described adjacent sub-district serving BS is represented the base station under the travelling carriage of described adjacent sub-district.
48., it is characterized in that according to the described base station of claim 46
Described receiving element also receives the allowable resource notice from the neighbours base station;
The allowable resource that described Common Control Channel unit selects the base station self to be allowed, and, selection result is fed back to described neighbours base station by notification unit.
49., it is characterized in that according to the described base station of claim 46
Described resource comprises at least one in time resource, frequency resource and the coding resource.
50., it is characterized in that described Common Control Channel is up Common Control Channel according to the described base station of claim 46.
51., it is characterized in that described Common Control Channel is descending Common Control Channel according to the described base station of claim 46.
52., it is characterized in that described base station utilizes descending Common Control Channel and the described travelling carriage set up to communicate according to the described base station of claim 51.
53., it is characterized in that according to the described base station of one of claim 46～52
Described Common Control Channel unit according to described travelling carriage move and changes in channel conditions at least one, with the neighbours base station described Common Control Channel is carried out the dynamic negotiation adjustment; And
Described notification unit is given described neighbours base station and described travelling carriage with the change notification of Common Control Channel.
54. a travelling carriage comprises:
Neighbours' base station test unit is used to detect pilot signal or other id signals of neighbours base station;
Judging unit is used for according to detected pilot signal or other id signals, judges whether the neighbours base station exists; And
Notification unit, when being used for existing in definite neighbours base station, send this travelling carriage to oneself serving BS and be in notice in two or more base stations overlapping covered, and give the serving BS of oneself detected signal, neighbours' Base Station Identification and signal quality reporting
Wherein said travelling carriage receives the notification of information relevant with Common Control Channel from serving BS, and described Common Control Channel is that serving BS is set up with the neighbours' base station negotiate that covers described travelling carriage.
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| CN2008100327855A CN101489303B (en) | 2008-01-14 | 2008-01-14 | Method, base station and mobile station for sharing common control channel among multiple base stations |
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| CN102340888A (en) * | 2010-07-23 | 2012-02-01 | 中兴通讯股份有限公司 | Multi-base-station collaboration method and system, mobile terminal and main service base station |
| EP2557850A1 (en) | 2011-08-12 | 2013-02-13 | Alcatel Lucent | Interference reduction |
| CN109302710B (en) | 2017-07-24 | 2022-07-12 | 华为技术有限公司 | Information transmission method and device |
| WO2022077267A1 (en) * | 2020-10-14 | 2022-04-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for communication management |
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| CN1393070A (en) * | 2000-10-04 | 2003-01-22 | 三星电子株式会社 | Apparatus and method for power control of downlink shared channel in mobile communication system |
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| CN1393070A (en) * | 2000-10-04 | 2003-01-22 | 三星电子株式会社 | Apparatus and method for power control of downlink shared channel in mobile communication system |
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