CN101146345B - A downlink resource dynamic allocation system and method in GPRS system - Google Patents
A downlink resource dynamic allocation system and method in GPRS system Download PDFInfo
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Abstract
The invention discloses a system and method for dynamic alloacating downlink resources. The system includes a mobile station and a radio network. A module for adding bitmap information is added to the core network; the module adds corresponding bitmap information to at least one idle time slot acquired by the core network according to the bitmap information allocation corresponding to the current time slot; the core network allocates subsequent idle time slots according to the bitmap information added by the module. The method includes the following steps: the network side determines allocable idle time slots and corresponding bitmap information throughout the time domain, allocates the idle time slots according to the bitmap information corresponding to current time slot and adds corresponding bitmap information to at least one idle time slot acquired through allocation; the network side allocates subsequent idle time slot according to the added bitmap information.
Description
Technical field
The present invention relates to a kind of mobile communication technology, relate in particular to the system and method for downlink resource dynamic assignment in a kind of gprs system.
Background technology
GPRS is a kind of mobile pocket data business that grows up on existing global system for mobile communications basis.GPRS is by introduce the packet switching functional entity in global digital mobile communication network, with the transfer of data of supporting to adopt packet mode to carry out.Gprs system can be regarded as the business that circuit switching system in original global system for mobile communications is carried out and expands, and utilizes portable terminal to insert the demand of the Internet or other packet data network to satisfy travelling carriage.
As shown in Figure 1, gprs system comprises travelling carriage 1 and corresponding wireless network, and described wireless network comprises base station 2, base station control station and core net 4.Above-mentioned core net 4 is given each corresponding travelling carriage 1 according to the message bit pattern of current time slots correspondence with each follow-up time slot allocation, for example, distributes to other travelling carriages, or the time slot allocation of free time is given the travelling carriage of current time slots correspondence.At each time slot, wireless network is to the travelling carriage allocation of downlink resource of correspondence.
Introduce the process of allocation of downlink resource in the gprs system below, as shown in Figure 2, network side issues downlink grouped link assignment message (01) to travelling carriage on the downlink grouped associated control channel, after travelling carriage receives this assignment messages, to a grouping control of network side feedback response message (02), the expression travelling carriage has received the downlink grouped link assignment message that network side issues; Afterwards, network side is according to above-mentioned downlink grouped link assignment message, issue data block (03) by Packet Data Channel to travelling carriage, the moment of setting, network side can add polling message (04) in the data block that issues, after travelling carriage receives this polling message, receive the situation of data block in conjunction with it, on the downlink grouped associated control channel, confirm to reply/deny response message (05), to represent success or unsuccessfully to have received data block to grouping downlink of network side feedback.Because GPRS network is the transmitted in packets data block, therefore, network side continues to issue data block (06) by Packet Data Channel to travelling carriage after definite travelling carriage has successfully received above-mentioned data block.Network side can issue to travelling carriage in the process of data block (06), the moment of setting, in the downlink grouped link assignment message that issues to travelling carriage, add polling message (07) by the downlink grouped associated control channel, come the poll travelling carriage whether correctly to receive assignment information, travelling carriage is then controlled response message (08) according to its reception situation to grouping of network side feedback, confirms correctly to have received assignment information.Network side continues to issue data block (09) to travelling carriage by Packet Data Channel, and in last data block, add polling message (10), come the reception condition of poll travelling carriage to data block, travelling carriage then receives the data block situation according to it, feed back a grouping downlink and confirm to reply/deny response message (11), to represent success or unsuccessfully to have received all data blocks.
In the process of above-mentioned GPRS allocation of downlink Radio Resource, downlink grouped link assignment message (01) the message feedback grouping control response message (02) that travelling carriage issues network side, and travelling carriage poll that network side is issued its receive the message (07) of downlink grouped link assignment message scenario and the grouping control response message (08) of feedback, these response messages send in a up-link wireless block period according to reserved block period relatively.Mobile station side begins to send to the response message of confirming from beginning the complete downstream assigned message that receives, and has the time delay of 40ms to 100ms usually.And the reaction time of network in the cycle, is 0～300ms at the radio block of bearer service maximum appointment reciprocal normally, and relatively the reaction time of You Huaing is 60ms.Suppose under best situation, the response message of assignment messages and affirmation all receives correctly, and reserved block period and bearer service maximum reciprocal is all got optimum relatively, and promptly reserved block period is got 40ms relatively, bearer service maximum reciprocal is got 60ms, and then Zui Xiao time delay also will reach 100ms.In the time delay of this 100ms, wireless network resource is not used by network and any travelling carriage, but has been wasted.
In view of this, by utilizing the reserved place in the PT Payload Type in the GPRS downlink data block, change final piece simultaneously and indicate the idle time slot of realizing this 100ms to utilize in the prior art.
As shown in Figure 3, three piece B1, B2, the B3 of the left side one row do not utilize the wherein transmission of data blocks schematic diagram of idle time slot.In piece B1, time slot 0 has all been distributed to the travelling carriage of corresponding Packet Data Channel to time slot 7 these 8 time slots, and in piece B2 and B3, time slot 4 and time slot 6 are idle, the unallocated travelling carriage of giving any one Packet Data Channel.
Among three piece B1, B2 of row, the B3,, change final piece indication simultaneously and realized redistributing on the right idle time slot 4 and idle time slot 6 by utilizing the reserved place in the PT Payload Type in the GPRS downlink data block.In piece B1, time slot 0 has all been distributed to the travelling carriage of corresponding Packet Data Channel to time slot 7 these 8 time slots; Network side can determine that according to its record time slot 4 and time slot 6 are idle in the data block after piece B2, can use to the travelling carriage of current time slots 1 correspondence the time slot allocation of these two free time.So in piece B2, network side adds message bit pattern in the Packet Data Channel of time slot 1, this message bit pattern has been indicated the time slot allocation information of next the setting time slot scope that constantly can distribute.For example " 00101 ", represented the time slot allocation information in 5 time slot scopes after the current time slots 1 successively, wherein " 0 " represents indistributable time slot, and " 1 " representative can distributed time slot, and " 00101 " expression time slot 4 and time slot 6 all are the idle time slots that can distribute; In piece B3, according to the message bit pattern " 00101 " in the Packet Data Channel of time slot 1 among the above-mentioned B2, time slot 4 and time slot 6 are assigned to the travelling carriage of corresponding Packet Data Channel, thereby have realized the utilization to idle time slot.
Above-mentioned message bit pattern according to current time slots carries out in the assigning process of idle time slot, can only be assigned to the narrow idle time slot that message bit pattern can be expressed, as above rheme figure information has covered 5 expansion time slots after the current time slots, and this message bit pattern can only be included in the Packet Data Channel of current time slots.Like this, just may cause limitting, and make the idle time slot outside the message bit pattern coverage can not get distributing because of the coverage of message bit pattern.As shown in Figure 4, in current time slots 1, can only carry out dynamic assignment to idle time slot 4 in the subsequent expansion time slot and idle time slot 6 according to message bit pattern " 00101 " wherein; Even and time slot 0 is idle,, also can't carry out idle time slot 0 is carried out dynamic assignment because the range of distribution that message bit pattern covers in the current time slots 1 is limit.Desire is distributed this free time time slot 0, will wait until time slot 3 at least, could carry out dynamic assignment to this free time time slot 0 by the message bit pattern in the time slot 3.
This shows, in the prior art method of idle time slot allocation is depended on the message bit pattern of current time slots, and the range of distribution that the message bit pattern of current time slots covers is limited, this has just directly caused distributing the scope of idle time slot can not cover whole time domain scope.If still there is the idle time slot that can distribute outside the range of distribution that current bitmap information covers, existing distribution method is just powerless, so still has waste of network resources.
Summary of the invention
The present invention is directed to the shortcoming of prior art, the system and method for downlink resource dynamic assignment in a kind of gprs system is provided, can distribute the idle time slot on the whole time domain comprehensively, improve the utilance of network.
The system of downlink resource dynamic assignment comprises travelling carriage and corresponding wireless network in the described gprs system, and described wireless network comprises base station, base station control station and core net, wherein, also is provided with message bit pattern and adds module in described core net;
Described message bit pattern adds module and is being distributed according to the message bit pattern corresponding with current time slots at least one idle time slot of gained by described core net, add determine by described core net with the corresponding message bit pattern of described at least one idle time slot;
Described core net is added the message bit pattern distribution subsequent idle time slot that module is added according to described message bit pattern;
Described message bit pattern adds module and all adds in each the idle time slot by the follow-up each distribution gained of described core net and the corresponding message bit pattern of described each idle time slot.
Described core net is according to the idle time slot and the corresponding message bit pattern thereof that can distribute in the definite whole time domain of its record.
Described message bit pattern adds module being distributed in each idle time slot of gained according to the described message bit pattern corresponding with current time slots by described core net, adds and the corresponding message bit pattern of described each idle time slot.
Described message bit pattern adds module and also can add and the corresponding message bit pattern of described last idle time slot being distributed in last idle time slot of gained according to the described message bit pattern corresponding with current time slots by described core net.
The method of downlink resource dynamic assignment in the also described gprs system of the present invention, its step comprises:
Further comprise after the described step 3, described network side all adds in each idle time slot of follow-up each distribution gained and the corresponding message bit pattern of described each idle time slot, and distributes idle time slot according to the message bit pattern corresponding with described each idle time slot.
In the above-mentioned steps one, described network side is according to the idle time slot and the corresponding message bit pattern thereof that can distribute in the definite whole time domain of its record.
In the above-mentioned steps two, described network side adds and the corresponding message bit pattern of described each idle time slot in each the idle time slot that distributes gained;
In the above-mentioned steps two, described network side adds and the corresponding message bit pattern of described last idle time slot in last the idle time slot that distributes gained; According to this step 2, after step 3, can further include, described network side all adds in last idle time slot of follow-up each distribution and the corresponding message bit pattern of described last idle time slot, and distributes idle time slot according to the message bit pattern corresponding with described last idle time slot.
Among the present invention, network side is by adding each self-corresponding message bit pattern in the idle time slot of subsequent allocations, and proceed to distribute idle time slot according to the message bit pattern that adds, overcome in the prior art limited coverage area because of message bit pattern, cause the drawback that to distribute the idle time slot on the whole time domain, realized distribution, improved the utilance of network greatly the idle time slot on the whole time domain.
Description of drawings
Fig. 1 is the system configuration schematic diagram of gprs system allocation of downlink resource in the prior art;
Fig. 2 is the schematic flow sheet of gprs system allocation of downlink resource in the prior art;
Fig. 3 is the Time Slot Occupancy schematic diagram of gprs system allocation of downlink resource in the prior art;
Fig. 4 is the another kind of Time Slot Occupancy signal of gprs system allocation of downlink resource in the prior art;
Fig. 5 is the method flow diagram of gprs system dynamic assignment downlink resource of the present invention;
Fig. 6 is the Time Slot Occupancy schematic diagram of gprs system dynamic assignment downlink resource of the present invention;
Fig. 7 is the another kind of Time Slot Occupancy schematic diagram of gprs system dynamic assignment downlink resource of the present invention;
Fig. 8 is the another kind of Time Slot Occupancy schematic diagram of gprs system dynamic assignment downlink resource of the present invention.
Embodiment
The present invention has realized the idle time slot of whole time domain is carried out dynamic assignment by continue to dose the message bit pattern that distributes corresponding subsequent idle time slot in the idle time slot that distributes, and has improved the utilance of network greatly.
The present invention will be further described below in conjunction with accompanying drawing.
The system of downlink resource dynamic assignment in the gprs system of the present invention comprises travelling carriage and corresponding wireless network, and described wireless network comprises base station, base station control station and core net, increases to be provided with message bit pattern interpolation module in described core net.
Core net can be determined the message bit pattern of current time slots correspondence according to its record, and other idle time slots that can distribute in the whole time domain and corresponding message bit pattern thereof.For example, shown in Fig. 6, the time slot 0 among the piece B1 is to the whole time domain scope of time slot 7, and 8 time slots are all busy, all distributed to the travelling carriage of corresponding Packet Data Channel.
Core net can determine that according to its record time slot 0, time slot 4 and time slot 6 are idle in the data block after piece B2, can use to the travelling carriage of current time slots 1 correspondence the time slot allocation of these three free time.So in piece B2, core net has just determined accordingly that also the message bit pattern of time slot 4 correspondences is " 01011 ", the message bit pattern of time slot 6 correspondences is " 01100 ", and the message bit pattern of time slot 0 correspondence is " 10010 ".Wherein, " 0 " represents indistributable time slot, and " 1 " representative can distributed time slot.
Described message bit pattern adds module and distributes at least one idle time slot of gained at the message bit pattern of core net according to the current time slots correspondence, adds the message bit pattern of this definite free time time slot correspondence of core net.
Specifically, message bit pattern adds the message bit pattern that module adds idle time slot correspondence and can be divided into two kinds of situations.A kind of is to distribute in each idle time slot of gained at the message bit pattern of core net according to the current time slots correspondence, all adds the message bit pattern of this free time time slot correspondence.Then, core net is added the message bit pattern distribution subsequent idle time slot that module is added according to message bit pattern.Certainly, core net is after the message bit pattern according to above-mentioned interpolation has distributed subsequent idle time slot, the module of adding message bit pattern can continue to add corresponding message bit pattern in the idle time slot of subsequent allocations, the rest may be inferred, message bit pattern adds module and all add the message bit pattern of this time slot correspondence in each idle time slot of the follow-up each distribution gained of core net, and core net is then distributed corresponding idle time slot according to each message bit pattern that adds.
As shown in Figure 6, among the piece B2, comprised the message bit pattern that idle time slot 4 and idle time slot 6 are distributed in the Packet Data Channel of current time slots 1.So core net is distributed follow-up idle time slot 4 and idle time slot 6 according to the message bit pattern " 00101 " of current time slots 1 correspondence, promptly corresponding to piece B3.And in conjunction with the above-mentioned definite idle time slot 4 and the message bit pattern of idle time slot 6 correspondences, by message bit pattern add module after distribution idle time slot 4 and idle time slot 6 in all add corresponding message bit pattern.At this moment, the message bit pattern that comprises in the time slot 4 is " 01011 ", and expression time slot 6, time slot 0 all are the idle time slots that can distribute, and in the time slot 1 owing to comprised the message bit pattern that distributes subsequent idle time slot, therefore, in the message bit pattern corresponding to be designated " 1 " of time slot 1; The message bit pattern that comprises in the time slot 6 is " 01100 ", and expression time slot 0 is the idle time slot that can distribute.Core net is distributed follow-up idle time slot 0 according to the message bit pattern of above-mentioned time slot 4 and time slot 6 correspondences, promptly corresponding to piece B4.
Fig. 7 has expressed the process that core net is distributed idle time slot intuitively.Comprised the message bit pattern to idle time slot 4 and 6 distribution of idle time slot in current time slots 1, core net is distributed time slot 4 and time slot 6 according to this message bit pattern, promptly corresponding to process a1 among the figure and process a2; At time slot 4, core net is distributed time slot 6 and time slot 0 according to the message bit pattern that message bit pattern adds the module interpolation, promptly corresponding to process b1 among the figure and process b2; At time slot 6, core net is distributed time slot 0 according to the message bit pattern that message bit pattern adds the module interpolation, promptly corresponding to the process c1 among the figure; At time slot 0, core net is distributed time slot 4 according to the message bit pattern that message bit pattern adds the module interpolation, promptly corresponding to the process d1 among the figure.Through above-mentioned assigning process, the idle time slot on the whole time domain all is utilized, and no longer has idle time slot.
Another kind of situation is that message bit pattern adds module and distributes in last idle time slot of gained at the message bit pattern of core net according to the current time slots correspondence, adds the message bit pattern of this free time time slot correspondence.Then, core net is added the message bit pattern distribution subsequent idle time slot that module is added according to message bit pattern.Certainly, core net is after the message bit pattern according to above-mentioned interpolation has distributed subsequent idle time slot, the module of adding message bit pattern can continue to add corresponding message bit pattern in last idle time slot of subsequent allocations gained, the rest may be inferred, message bit pattern adds module and all add the message bit pattern of this time slot correspondence in last idle time slot of the follow-up each distribution gained of core net, and core net is then distributed corresponding idle time slot according to each message bit pattern that adds.
Be example with Fig. 6 still, among the piece B2, comprised the message bit pattern that idle time slot 4 and idle time slot 6 are distributed in the Packet Data Channel of current time slots 1.So core net is distributed follow-up idle time slot 4 and idle time slot 6 according to the message bit pattern " 00101 " of current time slots 1 correspondence, promptly corresponding to piece B3.And, add module at last the idle time slot that distributes by message bit pattern in conjunction with the above-mentioned definite idle time slot 4 and the message bit pattern of idle time slot 6 correspondences, add corresponding message bit pattern in the promptly idle time slot 6.At this moment, the message bit pattern that comprises in the time slot 6 is " 01100 ", and expression time slot 0 is the idle time slot that can distribute, and in the time slot 1 owing to comprised the message bit pattern that distributes subsequent idle time slot, therefore, in the message bit pattern corresponding to be designated " 1 " of time slot 1.Core net is distributed follow-up idle time slot 0 according to the message bit pattern of above-mentioned time slot 6 correspondences, promptly corresponding to piece B4.And as the time slot 4 of non-last idle time slot, its corresponding message bit pattern then is used for the data block of the travelling carriage correspondence of the Packet Data Channel of this time slot is demarcated.
Fig. 8 has expressed the process that core net is distributed idle time slot intuitively.In current time slots 1, comprised message bit pattern to idle time slot 4 and 6 distribution of idle time slot, core net is distributed time slot 4 and time slot 6 according to this message bit pattern, promptly corresponding to process a1 among the figure and process a2, after assigning, the message bit pattern in the time slot 4 is changed into the data block of the travelling carriage correspondence of the Packet Data Channel of this time slot is demarcated; At time slot 6, core net is distributed time slot 0 according to the message bit pattern that message bit pattern adds the module interpolation, promptly corresponding to the process b1 among the figure, after assigning, the message bit pattern in the time slot 6 is changed into the data block of the travelling carriage correspondence of the Packet Data Channel of this time slot is demarcated; At time slot 0, core net is distributed time slot 4 according to the message bit pattern that message bit pattern adds the module interpolation, promptly corresponding to the process c1 among the figure.Through above-mentioned assigning process, the idle time slot on the whole time domain all is utilized, and no longer has idle time slot.
The method of downlink resource dynamic assignment in the gprs system of the present invention, as shown in Figure 5, its step comprises:
Network side can determine according to its record which time slot is idle in the whole time domain, and can determine the message bit pattern of these idle time slot correspondences.
As shown in Figure 6, the time slot 0 among the piece B1 is to the whole time domain scope of time slot 7, and 8 time slots are all busy, all distributed to the travelling carriage of corresponding Packet Data Channel.
Network side can determine that according to its record time slot 0, time slot 4 and time slot 6 are idle in the data block after piece B2, can use to the travelling carriage of current time slots 1 correspondence the time slot allocation of these three free time.So in piece B2, network side has just determined accordingly that also the message bit pattern of time slot 4 correspondences is " 01011 ", the message bit pattern of time slot 6 correspondences is " 01100 ", and the message bit pattern of time slot 0 correspondence is " 10010 ".Wherein, " 0 " represents indistributable time slot, and " 1 " representative can distributed time slot.
In this step, after network side distributes idle time slot according to the message bit pattern of current time slots correspondence, promptly at least one the idle time slot that distributes gained, add corresponding message bit pattern, specifically, the above-mentioned situation of adding corresponding message bit pattern at least one idle time slot can be divided into following two kinds.
Wherein a kind of situation is that network side adds corresponding message bit pattern in each the idle time slot that distributes gained.
Described in above-mentioned steps 101, among the piece B2, comprised the message bit pattern that idle time slot 4 and idle time slot 6 are distributed in the Packet Data Channel of current time slots 1.So, in this step, follow-up idle time slot 4 and idle time slot 6 are distributed according to the message bit pattern " 00101 " of current time slots 1 correspondence.And the idle time slot of determining in the integrating step 101 4 and the message bit pattern of idle time slot 6 correspondences, all add corresponding message bit pattern in idle time slot 4 after distribution and the idle time slot 6.At this moment, the message bit pattern that comprises in the time slot 4 is " 01011 ", and expression time slot 6, time slot 0 all are the idle time slots that can distribute, and in the time slot 1 owing to comprised the message bit pattern that distributes subsequent idle time slot, therefore, in the message bit pattern corresponding to be designated " 1 " of time slot 1; The message bit pattern that comprises in the time slot 6 is " 01100 ", and expression time slot 0 is the idle time slot that can distribute.By the message bit pattern of above-mentioned time slot 4 and time slot 6 correspondences as can be seen, all comprised the information of distributing idle time slot 0 in the message bit pattern of two time slot correspondences.
Among the piece B3, time slot 4 and time slot 6 all are assigned to the travelling carriage of the Packet Data Channel of current time slots 1 correspondence.
Another situation is that network side adds corresponding message bit pattern in last the idle time slot that distributes gained.
Equally, described in above-mentioned steps 101, among the piece B2, comprised the message bit pattern that idle time slot 4 and idle time slot 6 are distributed in the Packet Data Channel of current time slots 1.So, in this step, follow-up idle time slot 4 and idle time slot 6 are distributed according to the message bit pattern " 00101 " of current time slots 1 correspondence.And the idle time slot of determining in the integrating step 101 4 and the message bit pattern of idle time slot 6 correspondences, the idle time slot of last after distribution adds corresponding message bit pattern in the promptly idle time slot 6.At this moment, the message bit pattern that comprises in the time slot 6 is " 01100 ", and expression time slot 0 is the idle time slot that can distribute, and in the time slot 1 owing to comprised the message bit pattern that distributes subsequent idle time slot, therefore, in the message bit pattern corresponding to be designated " 1 " of time slot 1.And as the time slot 4 of non-last idle time slot, its corresponding message bit pattern then is used for the data block of the travelling carriage correspondence of the Packet Data Channel of this time slot is demarcated.
Among the piece B3, time slot 4 and time slot 6 all are assigned to the travelling carriage of the Packet Data Channel of current time slots 1 correspondence.
In this step, network side distributes subsequent idle time slot according to the message bit pattern that adds in the step 102.According to the difference of adding the mode of message bit pattern in the above-mentioned steps 102, in this step, distribute the message bit pattern of subsequent idle time slot institute foundation also different.Corresponding with above-mentioned steps 102, the distribution subsequent idle time slot in this step also can be divided into two kinds of situations.
Wherein a kind of situation is that the corresponding message bit pattern that adds in each the idle time slot that distributes gained according to network side distributes.
Corresponding situation in conjunction with above-mentioned steps 102, distribute according to the message bit pattern " 00101 " of time slot 1 correspondence time slot 4 and time slot 6 free time, and message bit pattern " 01011 " and " 01100 " of corresponding distribution subsequent timeslot have been added in time slot after distribution 4 and the time slot 6 respectively, so, in this step, network side continues follow-up idle time slot 0 is distributed according to the message bit pattern that adds in time slot 4 and the time slot 6.
Message bit pattern " 01011 " for time slot 4 correspondences has comprised the dynamic assignment information to time slot 6 and time slot 0, so, can distribute time slot 6 and time slot 0 to give the travelling carriage of the Packet Data Channel of current time slots 1 correspondence according to this message bit pattern.Message bit pattern " 01100 " for time slot 6 correspondences has comprised the dynamic assignment information to time slot 0, so, time slot 0 is distributed to the travelling carriage of the Packet Data Channel of current time slots 1 correspondence according to this message bit pattern.Corresponding to the piece B4 among Fig. 5 as can be seen, time slot 4, time slot 6, time slot 0 are all distributed to the travelling carriage of the Packet Data Channel of current time slots 1 correspondence, do not have idle time slot on whole time domain.
Because network side is when determining the message bit pattern of time slot 4 and time slot 6 correspondences, also determined the message bit pattern of time slot 0 correspondence simultaneously, therefore, network side is after the message bit pattern according to time slot 4 and time slot 6 correspondences distributes time slot 0, can also in time slot 0, add its corresponding message bit pattern " 10010 ", and distribute idle time slot 4 according to this message bit pattern.
The travelling carriage of above-mentioned Packet Data Channel for current time slots 1 correspondence distributes the process of idle time slot 4, time slot 6, time slot 0 to continue a plurality of data blocks, when a certain moment, when network side determined that time slot 4, time slot 6, time slot 0 no longer belong to idle time slot, this dynamic allocation procedure finished.At this moment, the message bit pattern in time slot 4, time slot 6, time slot 0 and the time slot 1 is " 00000 ", represents the idle time slot that can not distribute in the whole time domain.
Fig. 7 has expressed the process of the idle time slot of above-mentioned distribution intuitively.Comprised the message bit pattern to idle time slot 4 and 6 distribution of idle time slot in current time slots 1, network side distributes time slot 4 and time slot 6 according to this message bit pattern, promptly corresponding to process a1 among the figure and process a2; At time slot 4, according to the message bit pattern that adds time slot 6 and time slot 0 are distributed, promptly corresponding to process b1 among the figure and process b2; At time slot 6, according to the message bit pattern that adds time slot 0 is distributed, promptly corresponding to the process c1 among the figure; At time slot 0, according to the message bit pattern that adds time slot 4 is distributed, promptly corresponding to the process d1 among the figure.Through above-mentioned assigning process, the idle time slot on the whole time domain all is utilized, and no longer has idle time slot.
Another kind of distribution condition in this step is that the corresponding message bit pattern that adds in last the idle time slot that distributes gained according to network side distributes.
In conjunction with the corresponding situation in the above-mentioned steps 102, distribute according to the message bit pattern " 00101 " of time slot 1 correspondence time slot 4 and time slot 6 free time, and added the message bit pattern " 01100 " of corresponding distribution subsequent timeslot in the time slot after distribution 6, so, in this step, network side continues follow-up idle time slot 0 is distributed according to the message bit pattern that adds in the time slot 6.Message bit pattern " 01100 " for time slot 6 correspondences has comprised the dynamic assignment information to time slot 0, so, time slot 0 is distributed to the travelling carriage of the Packet Data Channel of current time slots 1 correspondence according to this message bit pattern.Corresponding to the piece B4 among Fig. 5 as can be seen, time slot 4, time slot 6, time slot 0 are all distributed to the travelling carriage of the Packet Data Channel of current time slots 1 correspondence, do not have idle time slot on whole time domain.
Because network side is when determining the message bit pattern of time slot 4 and time slot 6 correspondences, also determined the message bit pattern of time slot 0 correspondence simultaneously, therefore, network side is after the message bit pattern according to time slot 6 correspondences distributes time slot 0, time slot 6 is last the idle time slot that has distributed after the current time slots 1 no longer just, and time slot 0 changes last idle time slot of current distribution into.So, network side can continue to add its corresponding message bit pattern " 10010 " in time slot 0, and distributes continuation to distribute idle time slot according to this message bit pattern.In this case, originally the time slot 6 that comprised the message bit pattern that distributes subsequent idle time slot, because it is being not last the idle time slot that has distributed, therefore, its corresponding message bit pattern is used for the data block of the travelling carriage correspondence of the Packet Data Channel of this time slot is demarcated.
The travelling carriage of above-mentioned Packet Data Channel for current time slots 1 correspondence distributes the process of idle time slot 4, time slot 6, time slot 0 to continue a plurality of data blocks, when a certain moment, when network side determined that time slot 4, time slot 6, time slot 0 no longer belong to idle time slot, this dynamic allocation procedure finished.At this moment, the message bit pattern in time slot 4, time slot 6, time slot 0 and the time slot 1 is " 00000 ", represents the idle time slot that can not distribute in the whole time domain.
Fig. 8 has expressed the process of the idle time slot of above-mentioned distribution intuitively.In current time slots 1, comprised message bit pattern to idle time slot 4 and 6 distribution of idle time slot, network side distributes time slot 4 and time slot 6 according to this message bit pattern, promptly corresponding to process a1 among the figure and process a2, after assigning, the message bit pattern in the time slot 4 is changed into the data block of the travelling carriage correspondence of the Packet Data Channel of this time slot is demarcated; At time slot 6, according to the message bit pattern that adds time slot 0 is distributed, promptly corresponding to the process b1 among the figure, after assigning, the message bit pattern in the time slot 6 is changed into the data block of the travelling carriage correspondence of the Packet Data Channel of this time slot is demarcated; At time slot 0, according to the message bit pattern that adds time slot 4 is distributed, promptly corresponding to the process c1 among the figure.Through above-mentioned assigning process, the idle time slot on the whole time domain all is utilized, and no longer has idle time slot.
Among the present invention, network side distributes follow-up idle time slot according to the message bit pattern of current time slots correspondence, and at least one idle time slot that distribution obtains, add to continue distribute the message bit pattern of the follow-up idle time slot of this time slot, message bit pattern according to this new interpolation distributes subsequent idle time slot again, and the idle time slot on the whole time domain all is utilized.Overcome in the prior art and can only improve the utilance of network greatly according to the message bit pattern of current time slots to the drawback that the idle time slot in this message bit pattern coverage distributes.Simultaneously, compare the distribution of idle time slot on only the message bit pattern that adds in the idle time slot that obtains according to last distribution situation of distributing can be finished whole time domain in less distribution number of times with the situation that the message bit pattern that adds in the idle time slot that obtains according to each distribution distributes.
Although embodiment of the present invention are open as above, but it is not restricted to listed utilization in specification and the execution mode, it can be applied to various suitable the field of the invention fully, for those skilled in the art, can easily realize other modification, therefore under the universal that does not deviate from claim and equivalency range and limited, the legend that the present invention is not limited to specific details and illustrates here and describe.
Claims (12)
1. the system of downlink resource dynamic assignment in the gprs system comprises travelling carriage and corresponding wireless network, and described wireless network comprises base station, base station control station and core net, it is characterized in that, also is provided with message bit pattern in the described core net and adds module;
Described message bit pattern adds module and is being distributed according to the message bit pattern corresponding with current time slots at least one idle time slot of gained by described core net, add determine by described core net with the corresponding message bit pattern of described at least one idle time slot;
Described core net is added the message bit pattern distribution subsequent idle time slot that module is added according to described message bit pattern;
Described message bit pattern adds module and all adds in each the idle time slot by the follow-up each distribution gained of described core net and the corresponding message bit pattern of described each idle time slot.
2. the system of downlink resource dynamic assignment as claimed in claim 1 is characterized in that, described core net is according to the idle time slot and the corresponding message bit pattern thereof that can distribute in the definite whole time domain of its record.
3. the system of downlink resource dynamic assignment as claimed in claim 1, it is characterized in that, described message bit pattern adds module being distributed in each idle time slot of gained according to the described message bit pattern corresponding with current time slots by described core net, adds and the corresponding message bit pattern of described each idle time slot.
4. the system of downlink resource dynamic assignment as claimed in claim 1, it is characterized in that, described message bit pattern adds module being distributed in last idle time slot of gained according to the described message bit pattern corresponding with current time slots by described core net, adds and the corresponding message bit pattern of described last idle time slot.
5. the system of downlink resource dynamic assignment in the gprs system comprises travelling carriage and corresponding wireless network, and described wireless network comprises base station, base station control station and core net, it is characterized in that, also is provided with message bit pattern in the described core net and adds module;
Described message bit pattern adds module and is being distributed according to the message bit pattern corresponding with current time slots at least one idle time slot of gained by described core net, add determine by described core net with the corresponding message bit pattern of described at least one idle time slot;
Described core net is added the message bit pattern distribution subsequent idle time slot that module is added according to described message bit pattern;
Described message bit pattern adds module and all adds in last the idle time slot by the follow-up each distribution gained of described core net and the corresponding message bit pattern of described last idle time slot.
6. the method for downlink resource dynamic assignment in the gprs system is characterized in that step comprises:
Step 1, network side are determined the idle time slot that can distribute in the whole time domain and corresponding message bit pattern thereof;
Step 2, described network side distributes idle time slot according to the message bit pattern corresponding with current time slots, and adds and the corresponding message bit pattern of described at least one idle time slot at least one the idle time slot that distributes gained;
Step 3, described network side distributes subsequent idle time slot according to the message bit pattern corresponding with described at least one idle time slot;
Further comprise after the described step 3, described network side all adds in each idle time slot of follow-up each distribution gained and the corresponding message bit pattern of described each idle time slot, and distributes idle time slot according to the message bit pattern corresponding with described each idle time slot.
7. the method for downlink resource dynamic assignment as claimed in claim 6 is characterized in that, in the described step 1, described network side is according to the idle time slot and the corresponding message bit pattern thereof that can distribute in the definite whole time domain of its record.
8. the method for downlink resource dynamic assignment as claimed in claim 6 is characterized in that, in the described step 2, described network side adds and the corresponding message bit pattern of described each idle time slot in each the idle time slot that distributes gained.
9. the method for downlink resource dynamic assignment as claimed in claim 6 is characterized in that, in the described step 2, described network side adds and the corresponding message bit pattern of described last idle time slot in last the idle time slot that distributes gained.
10. the method for downlink resource dynamic assignment as claimed in claim 9, it is characterized in that, in the described step 3, described network side carries out the branch timing according to the message bit pattern of last idle time slot correspondence, and the message bit pattern of all the idle time slot correspondences before described last idle time slot all is used for the data block corresponding with the travelling carriage of the Packet Data Channel of described last idle time slot demarcated.
11. the method for downlink resource dynamic assignment in the gprs system is characterized in that step comprises:
Step 1, network side are determined the idle time slot that can distribute in the whole time domain and corresponding message bit pattern thereof;
Step 2, described network side distributes idle time slot according to the message bit pattern corresponding with current time slots, and adds and the corresponding message bit pattern of described at least one idle time slot at least one the idle time slot that distributes gained;
Step 3, described network side distributes subsequent idle time slot according to the message bit pattern corresponding with described at least one idle time slot;
Further comprise after the described step 3, described network side all adds in last idle time slot of follow-up each distribution and the corresponding message bit pattern of described last idle time slot, and distributes idle time slot according to the message bit pattern corresponding with described last idle time slot.
12. the method for downlink resource dynamic assignment as claimed in claim 11, it is characterized in that, in the described step 3, described network side carries out the branch timing according to the message bit pattern of last idle time slot correspondence, and the message bit pattern of all the idle time slot correspondences before described last idle time slot all is used for the data block corresponding with the travelling carriage of the Packet Data Channel of described last idle time slot demarcated.
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| CN200610153832A CN101146345B (en) | 2006-09-13 | 2006-09-13 | A downlink resource dynamic allocation system and method in GPRS system |
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| CN101901261A (en) * | 2010-07-23 | 2010-12-01 | 南京国电南自轨道交通工程有限公司 | Method for storing real-time database by using similar cluster |
| CN107566075B (en) | 2016-07-01 | 2019-10-25 | 华为技术有限公司 | A kind of method, apparatus and network system sending and receiving business |
| CN109451587B (en) * | 2018-12-07 | 2022-03-08 | 珠海泰芯半导体有限公司 | Method for dynamically allocating time slot length of limited access window in wireless network |
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| CN1219306A (en) * | 1997-02-21 | 1999-06-09 | 摩托罗拉公司 | Method and apparatus for allocating spectral resources in a wireless communication system |
| CN1245623A (en) * | 1996-11-25 | 2000-02-23 | 艾利森电话股份有限公司 | Adaptive channel allocation method and apparatus for multi-slot, multi-carrier communication system |
| US6563806B1 (en) * | 1997-12-12 | 2003-05-13 | Hitachi, Ltd. | Base station for multi-carrier TDMA mobile communication system and method for assigning communication channels |
| US6895248B1 (en) * | 1998-06-02 | 2005-05-17 | The Board Of Trustees Of The Leland Stanford Junior University | Dynamic resource allocation and media access control for a wireless ATM network |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1245623A (en) * | 1996-11-25 | 2000-02-23 | 艾利森电话股份有限公司 | Adaptive channel allocation method and apparatus for multi-slot, multi-carrier communication system |
| CN1219306A (en) * | 1997-02-21 | 1999-06-09 | 摩托罗拉公司 | Method and apparatus for allocating spectral resources in a wireless communication system |
| US6563806B1 (en) * | 1997-12-12 | 2003-05-13 | Hitachi, Ltd. | Base station for multi-carrier TDMA mobile communication system and method for assigning communication channels |
| US6895248B1 (en) * | 1998-06-02 | 2005-05-17 | The Board Of Trustees Of The Leland Stanford Junior University | Dynamic resource allocation and media access control for a wireless ATM network |
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