CN103347303A - Radio resource allocation method and communication device - Google Patents
Radio resource allocation method and communication device Download PDFInfo
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Abstract
The invention provides a radio resource allocation method and a communication device. Under the recognizable state of a pattern recognition number (51), the combination and the distribution starting position of a plurality of resources in a resource space (61) managing radio resources of unit gaps of frequency, time and the like are defined in a distribution pattern definition list (50), serve as a resource allocation pattern (53) and a pattern initial coordinate (52), and are set in a base station and a mobile radio station. For resource allocation requests from the mobile radio station, according to the information of a distribution start coordinate of the pattern initial coordinate (52) in the base station response pattern recognition number (51) and the resource space (61), the pattern recognition number (51) received from the base station is used in the mobile radio station for searching the distribution pattern definition list (50), so that the resource allocation pattern (53) is determined. Further, according to the pattern position, assigned by the distribution start coordinate, in the resource space (61), the combination of the resources is determined and used.
Description
The application is based on the 42nd proposition of Patent Law detailed rules for the implementation, is to be that July 8, application number in 2005 are dividing an application of 200580050997.0 application for a patent for invention " wireless resource allocation methods, communicator " applying date.
Technical field
The present invention relates to wireless resource distributing techniques and wireless communication technology, particularly using the group of multiple radio resource to carry out the technology that effectively to use in the wireless communication system etc. of radio communication by reservation.
Background technology
Used the internet connection of portable terminal to popularize expectation communication more at a high speed.Portable terminal utilizes Radio Resource to be connected with the base station, is connected with external networks such as other base stations or internets from the base station in wired mode, finally establishes a connection to the path of communication counterpart.And, in order a plurality of portable terminals to be connected with 1 base station with finite wireless resources, use time division multiple access (TDMA:Time Division Multiple Access), frequency division multiple access (FDMA:Frequency Division Multiple Access), code division multiple access multi-access modes such as (CDMA:Code Division Multiple Access).
In TDMA, in identical frequency band, cutting apart very short time slot to the user, to carry out the user multiplexing.In FDMA, segmentation frequency band very thinly is to each user's allocated frequency band.In CDMA, at one time, in the identical frequency band, it is multiplexing to distribute the sign indicating number of quadrature to carry out the user to each user.Because the resource-constrained that in the base station, can use, so portable terminal is fixed.Therefore, when communicating, take to distribute to portable terminal the method for idle resource.Therefore, require effectively to carry out the distribution of resource and the control of release.
Carry out effective distribution and the release of Radio Resource by scheduling.So-called scheduling is the processing priority that for example determines from the user priority distribute data bag of the high channel of the quality of reception etc.
As representational dispatching method, known for example non-patent literature 1 disclosed Max CIR mode and PF(Proportional Fairness: mode proportional fairness).
And have following multicarrier to transmit as the transfer approach that is suitable for high-speed communication: the information that will transmit is converted to a plurality of data side by side, with respect to the different carrier wave of a plurality of frequencies in the transmission band, respectively these data arranged side by side is modulated, and transmits side by side then.Multicarrier transmits because transmit data side by side, so can realize transmitting at a high speed.Under this situation, the part of the Baud Length by multi-carrier modulation after than long arranged side by sideization of original Baud Length, so, can reduce in the radio communication influence of the multipath that the delay owing to reflected wave brings.And, in frequency domain, because the narrow bandwidth of each carrier wave, so, with respect to frequency selective fading also grow.As one of this multicarrier transmission mode, OFDM (the OFDM:Orthogonal Frequency Division Multiple) mode of the carrier wave that uses quadrature is for example arranged.When also with OFDM mode and TDMA or CDMA mode, except the transmission arranged side by side of frequency direction, the user who also carries out time domain or sign indicating number territory is multiplexing, can effectively use Radio Resource.
In radio communication, reserve resource before communicating, and after obtaining preengaging result's notice, beginning under the situation of the access way that data send, when having a plurality of stock number that can preengage, the control information quantitative change of the resource that notice is distributed is big.
For example in up transmission, portable terminal sends the resource reservation signal to the base station, carrying out resource in the base station distributes, in down channel under the situation of the system of portable terminal notice allocation result, in order effectively to utilize Radio Resource, the data that also can carry out down direction in same channel send and have put into the transmission of the control information of allocation result.In this case, in control information and downlink data, share certain resource, so, when the control information amount for a long time, the downlink data amount that can send together reduces, and has the problem that downlink throughput capacity reduces.
The mode that patent documentation 1 is to use the three-dimensional resource of frequency, time, sign indicating number to dispatch, still, as announcement information, notice beginning slot and allocation space range information.So-called spatial dimension information shows the cuboid that is surrounded by unit frequency band, unit time slot and unitary code, under the situation of distributing with the shape beyond the cuboid, a plurality of cuboids is made up to distribute.But, because the announcement information amount increases with the quantity of the cuboid that makes up with being directly proportional, so, when the shape of spatial dimension information becomes complexity, have for the resource consumption of communicating control information the problem of many, downlink throughput capacity reduction.And, because the amount of information that throughput sends when low reduces, so the transmission of information may produce delay, in the audio communication (VoIP:Voice over IP) that utilizes packet to carry out that expectation will be popularized from now on waited the requirement that postpones very hard real time service, possibly can't satisfy delay allowance.
Non-patent literature 1:A.Jalali, R.Padovani, R.Pankaj, " Data Throughput of CDMA-HDR a High Efficiency-High Data Rate Personal Communication Wireless System ", VTC2000Spring, May2000.
Patent documentation 1: TOHKEMY 2005-117579 communique
Summary of the invention
The object of the present invention is to provide following technology: carry out in the radio communication of information communication in the reservation of carrying out Radio Resource and distribution, can cut down the needed amount of information of notice wireless resource allocation result.
Another object of the present invention is to provide following technology: carry out in the radio communication of information communication in the reservation of carrying out Radio Resource and distribution, can prevent the propagation delay that increases the communication information that causes because of the needed amount of information of notice wireless resource allocation result.
The 1st viewpoint of the present invention provides a kind of wireless resource allocation methods, this method is used for the 1st radio communication device and the 2nd radio communication device uses institute's assigned radio resource to carry out the wireless communication system of radio communication, wherein, the pre-prepd a plurality of resource allocation mode that are positioned at the resource management space of the 1st radio communication device storage, from a plurality of resource allocation mode that comprise the starting position, select based on the allocation of radio resources solicited message, and the resource allocation mode that comprises the starting position is notified to described the 2nd radio communication device with the selected pattern recognition information that comprises the resource allocation mode of starting position of expression.。
The 2nd viewpoint of the present invention provides a kind of communicator, this communicator has: memory cell, it keeps a plurality of resource allocation mode, and these a plurality of resource allocation mode comprise the resource starting position in the resource management space and are used to specify the various combination of the described Radio Resource in the described resource management space of managing radio resources; The solicited message detecting unit, it detects the allocation of radio resources solicited message; Selected cell, it selects to satisfy resource allocation mode described assignment request information and that comprise described starting position from a plurality of resource allocation mode that comprise the starting position; And the assignment information notification unit, the selected pattern recognition information that comprises the resource allocation mode of described starting position of its notice expression.
According to above-mentioned invention, can obtain following (i)～(vi) described effect or advantage.
(i) by being predetermined the pattern of wanting assigned radio resource, can carry out the flexibly resource corresponding with the quantity of pattern distributes, when notice assigned radio resource information, can notify with MIN amount of information, so can cut down control information, can effectively utilize Radio Resource.
(ii) when the request Radio Resource, by notifying the information about the delay that can allow together, the distribution that postpones can be considered, delay allowance can be satisfied.
(iii) by the one or more resources in time, frequency, the sign indicating number are defined allocation model as Radio Resource, can carry out resource distribution flexibly, and can cut down the control information amount for the notice Resources allocation, so can effectively utilize Radio Resource.
When (iv) any a plurality of in time, frequency, the sign indicating number being used as resource, by the allocation model that only is defined as follows, namely only used the allocation model of piece adjacent on any resource kind of time orientation or frequency direction or sign indicating number direction, thereby can cut down the pattern quantity of Resources allocation, can reduce the control information amount.
(when v) selecting resource allocation mode, if select to be sent completely moment pattern the earliest, then shorten delay.
(when vi) selecting resource allocation mode, by selecting to be sent completely the pattern that is no more than delay allowance constantly, can satisfy delay allowance.
Description of drawings
Fig. 1 illustrates the concept map that comprises as an example of the structure of the wireless communication system of the radio communication device of an embodiment of the invention.
Fig. 2 is the block diagram of an example that the structure of the radio communication device that constitutes the base station in an embodiment of the invention is shown.
Fig. 3 is the block diagram of an example that the structure of the radio communication device that constitutes mobile radio station in an embodiment of the invention is shown.
Fig. 4 is that example illustrates the block diagram of the part of the radio communication device that constitutes mobile radio station in an embodiment of the invention in more detail.
Fig. 5 is the concept map that the example of the allocation model definition in the two-dimentional resource is shown.
Fig. 6 is the key diagram that the example of resource allocation result in the two-dimentional resource and resource allocation information is shown.
Fig. 7 is the concept map that illustrates as an example of the structure of the employed assignment request information of resource allocation methods of an embodiment of the invention.
Fig. 8 is the concept map that the form example that distributes announcement information is shown.
Fig. 9 is the concept map of an example that assignment request information in an embodiment of the invention is shown and distributes the transfer approach of announcement information.
Figure 10 is the concept map of an example that assignment request information in an embodiment of the invention is shown and distributes the transfer approach of announcement information.
Figure 11 is the flow chart of an example of distribution method that the resource of base station is shown.
Figure 12 is the flow chart that illustrates as an example of the action of the mobile radio station in the resource allocation methods of an embodiment of the invention.
Figure 13 is the flow chart of variation that the resource allocation methods of base station side is shown.
Figure 14 illustrates in time, frequency, the sign indicating number any carried out the concept map of the structure example of the allocation model definition list of branch timing and resource memory (resource space) as resource.
Figure 15 is the concept map of the structure example of allocation model definition list when illustrating time and frequency as resource and resource memory (resource space).
Figure 16 is the concept map of the structure example of allocation model definition list when illustrating time, frequency and sign indicating number as resource and resource memory (resource space).
Figure 17 is the concept map of the structure example of allocation model definition list when each slot (slot) that distributes a plurality of times, frequency and sign indicating number individually is shown and resource memory (resource space).
Figure 18 illustrates the concept map that constitutes only specify the allocation model definition list of adjacent resource with frequency with when the time, the two was appointed as resource.
Figure 19 is the concept map of the allocation model definition list when only specifying in resource adjacent on frequency direction or time orientation or the sign indicating number direction.
Figure 20 is the flow chart that an example that is sent completely the resource allocation methods when constantly wired is shown.
Figure 21 illustrates satisfying the delay allowance ask and being sent completely constantly the flow chart of an example of the resource allocation methods that the combination of resource the earliest distributes.
Figure 22 is the flow chart that illustrates as the variation of the resource allocation methods of an embodiment of the invention.
Embodiment
Below, the execution mode that present invention will be described in detail with reference to the accompanying.
Fig. 1 illustrates the concept map that comprises as an example of the structure of the wireless communication system of the radio communication device of an embodiment of the invention, Fig. 2 is the block diagram of an example that the structure of the radio communication device that constitutes the base station in the present embodiment is shown, Fig. 3 is the block diagram of an example that the structure of the radio communication device that constitutes mobile radio station in the present embodiment is shown, and Fig. 4 is that example illustrates the block diagram of a part of the mobile radio station of present embodiment in more detail.
The wireless communication system of present embodiment comprises a plurality of base stations 30 and respectively and carry out a plurality of mobile radio stations 40 of radio communication between this base station 30.A plurality of base stations 30 are connected with upper network 10, carry out a plurality of mobile radio stations 40 that each base station 30(is a plurality of base station 30 subordinaties via this upper network 10) between information communication.
And upper network 10 for example is connected with external networks 20 such as public telecommunication networks, each mobile radio station 40 can carry out and external network 20 between information communication.
Such as illustrated in Figure 2, the base station 30 of present embodiment comprises control part 31, input/output interface 32, sending part 33, modulation portion 34, enlarging section 35, demodulation section 36, acceptance division 37, transmitting antenna Tx, reception antenna Rx and resource allocation section 38.
In receiving processing, the reception signal that reception antenna Rx receives is transmitted to acceptance division 37 after demodulation section 36 is decoded processing.The decoding that receives signal in acceptance division 37 is handled, and separates control data and information data, and the control data are transmitted to control part 31, and information data is output to upper network 10 via input/output interface 32.
In sending processing, the information via transmission is wished in input/output interface 32 inputs sends sending part 33 to.In sending part 33, control data and generate, encode, interweave, control regularly generation.The output of sending part 33 sends from transmitting antenna Tx via enlarging section 35 after modulating in modulation portion 34.In addition, modulation system is unqualified.And enlarging section 35 not necessarily.Control part 31 carries out whole control.
In storage device 38d, store allocation model definition list 50 described later and resource memory 60.
Fig. 5 is the concept map of an example that the structure of allocation model definition list 50 and resource memory 60 is shown.
That is, in resource memory 60, management resource 60a in the resource space 61 that the 2nd reference axis 61b by the 1st reference axis 61a of time orientation and frequency direction constitutes.A～i in the resource memory 60 illustrates the position of each resource 60a in resource space 61.Each resource 60a carries out for example whether having carried out the management that distributes with bitmap, and according to the carrying out of distributing, available clear area is changed to cut (worm food い) state.
Fig. 6 illustrates the distribution example of the resource 60a in the resource memory 60.In the example of this Fig. 6, show distribution (t3, f2), (t3, f3), (t4, f2) situation of the group of these 3 resource 60a.The position relation that becomes (a, b, d) that ties up in the resource space 61 is closed in the position of these 3 resource 60a.In the present embodiment, in advance the relative position relation of a plurality of resources in this resource space 61 is stored in the allocation model definition list 50 as resource allocation mode 53.Each resource allocation mode 53 is by 51 identifications of pattern recognition numbering.
That is, in allocation model definition list 50, at the each side of pre-prepd a plurality of resource allocation mode 53, pattern recognition numbering 51 and pattern beginning coordinate 52 be mapped store.Pattern beginning coordinate 52 is expressions with in the resource allocation mode 53 retrieve resources spaces 61 time, begin the definition information that the corresponding pattern of coordinate 62 starts the position with distribution in the resource space 61.In the example of Fig. 6, distribute beginning coordinate 62 to be positioned at and resource allocation mode 53(a, b, d) " a " corresponding (t3, position f2) of pattern beginning coordinate 52.
Therefore, can utilize the relative position relation of a plurality of resources in the resource allocation mode 53 allocated resource spaces 61, can utilize and distribute beginning coordinate 62 to specify one group of resource absolute position in resource space 61 with this position relation.
Then, in resources mode retrieval dispenser 38b, the resource allocation mode 53 that retrieval is consistent with the combination of the resource 60a of the assignment request information 80 that satisfies structure shown in Figure 7, and then, the resource 60a of the free time that retrieval ordered state and this resource allocation mode 53 are consistent in resource space 61, the distribution that detects in the resource space 61 corresponding with the starting position (pattern beginning coordinate 52) of this arrangement begins coordinate 62, is notified to mobile radio station 40 as the control data via sending part 33.
Fig. 8 is for 30 examples to the form of the control data (distributing announcement information 70) of the allocation result of mobile radio station 40 notice resource 60a from the base station.Distribute announcement information 70 to comprise allocation model identiflication number 71 and distribute and begin coordinate 72.
In allocation model identiflication number 71, be set with the pattern recognition numbering 51 corresponding with the resource allocation mode 53 of above-mentioned result for retrieval.The pattern in the resource space 61 with this resource allocation mode 53 of being set with in distributing beginning coordinate 72 starts coordinate 52 corresponding distribution and begins coordinate 62.
That is, the information that receives according to acceptance division 37 of solicited message test section 38a detects and above-mentionedly shown in Figure 7 distributes relevant assignment request information 80 with resource.This assignment request information 80 can comprise for example request resource amount 81, delay allowance time 82, transfer rate 83 and SIR(Signal to Interference Ratio: signal-to-jamming ratio) at least one in the information such as information 84.
Then, in resources mode retrieval dispenser 38b, from the allocation model definition list of storing at storage device 38d 50 in the predefined resource allocation mode 53, the resource allocation mode 53 of assignment request information 80 is satisfied in retrieval, judgement could distribute, and selects an assignable resource allocation mode 53.At last, in the assignment information notice 38c of portion, in distributing announcement information 70, set the allocation model identiflication number 71(pattern recognition numbering 51 of the selected resource allocation mode 53 of expression) and distribute the distribution in the beginning coordinate 72(resource space 61 to begin coordinate 62), and send it to sending part 33, via modulation portion 34, enlarging section 35 and transmitting antenna Tx, mobile radio station 40 is responded.
Such as illustrated in Figure 3, the mobile radio station 40 of present embodiment comprises control part 41, input/output interface 42, sending part 43, modulation portion 44, enlarging section 45, demodulation section 46, acceptance division 47, solicited message notice portion 48 and Resources allocation detection unit 49.
In receive handling, the reception signal that sends to reception antenna Rx has carried out decoding in demodulation section 46 handle after, be transmitted to acceptance division 47.The processing of decoding in acceptance division 47 separates control data and information data, and the control data are transmitted to control part 41, and information data is output to the user interface of information treatment part, sound and the image etc. of mobile radio station 40 inside via input/output interface 42.
In send handling, on the contrary, wish the information that sends from the user interface of information treatment part, sound and the image etc. of mobile radio station 40 inside via input/output interface 42 inputs, and send sending part 43 to.In sending part 43, control data and generate, encode, interweave, control regularly generation.The output of sending part 43 sends from transmitting antenna Tx via enlarging section 45 after modulating in modulation portion 44.In addition, modulation system is unqualified.And enlarging section 45 not necessarily.Control part 41 carries out whole control.
Under the situation of present embodiment, Resources allocation detection unit 49 comprises assignment information test section 49a and storage device 49b.In storage device 49b, store the allocation model definition list 50 that shares with the allocation model definition list 50 of above-mentioned base station 30 sides and resource space 61 and the definition information of resource space 61.
Assignment information test section 49a has following function: according to the distribution announcement information 70 of the 30 sides notice from the base station, detect the resource allocation mode 53 corresponding with allocation model identiflication number 71 and begin coordinate 62 with distributing the distribution that begins the corresponding resource space 61 of coordinate 72; And according to detected resource allocation mode 53 and the information of distributing beginning coordinate 62, utilize the method for above-mentioned Fig. 6, determine sending part 43 employed Radio Resource 49c, and in this sending part 43, set.
And such as illustrated in Figure 4, solicited message notice portion 48 has the 48a of solicited message preparing department.The 48a of this solicited message preparing department has following function: according to from the information such as request resource amount 81, delay allowance time 82, transfer rate 83 and SIR information 84 of input/output interface 42 via control part 41 inputs, generate assignment request information 80 and send to sending part 43.
When producing the data that transmit from mobile radio station 40, at first, 30 announcement informations transmit needed assignment request information 80(and for example comprise request resource amount 81 to the base station by sending part 43 from solicited message notice portion 48).When 30 sending the resource distribution result when namely distributing announcement information 70 from the base station, received by acceptance division 47, send to Resources allocation detection unit 49 and distribute announcement informations 70.
Resources allocation detection unit 49 is in assignment information test section 49a, according to the control data of being separated by acceptance division 47 (distributing announcement information 70), the distribution that the allocation model identiflication number 71 of detection expression resource allocation mode 53 and the distribution of expression resource space 61 begin coordinate 62 begins coordinate 72, with reference to the allocation model definition list of storing among the storage device 49b 50, decision is the 30 spendable resource 60a that distribute from the base station, send it to sending part 43.In sending part 43, use specified resource 60a to come transfer information data.At this moment, also can with information data send comprise the resource 60a that uses of information data below the reservation assignment request information 80 in interior control data.
In addition, as from mobile radio station 40 to the base station 30 send assignment request information 80 and from the base station 30 methods of distributing announcement informations 70 to mobile radio station 40 responses, have the method for the illustrated such use physical channel separately of the method for using a physical channel between the illustrated such base station 30 of Fig. 9 and the mobile radio station 40 and Figure 10.
In the method for the physical channel of use of Fig. 9, in control data 91, be set with assignment request information 80, send to base station 30(Uplink with the user data 93 as information data 92 from mobile radio station 40).
And, be set with the distribution announcement information 70 corresponding with assignment request information 80 in the data 91 in control, with 30 sending to mobile radio station 40(Downlink as the user data 93 of information data 92 from the base station).
On the other hand, as shown in figure 10, under the situation of using physical channel separately, assignment request information 80 sends to base station 30(Uplink from mobile radio station 40 individually as control data 91), the distribution announcement information 70 that responds 30 sends to mobile radio station 40(Downlink from the base station individually as control data 91).User data 93 as information data 92 is received and dispatched (Uplink/Downlink) individually between base station 30 and mobile radio station 40.
Below, the effect of present embodiment is described.
Figure 11 is the flow chart of an example of distribution method that the resource of base station 30 sides is shown.
Then, select a pattern (step 103) the predefined resource allocation mode 53 in allocation model definition list 50, compare with idling-resource, judgement could be satisfied the distribution (step 104) of request.
Then, the result of retrieval for example as shown in Figure 6, if found assignable resource area, then under assignable situation, the resource allocation mode 53 corresponding pattern recognitions of in distributing announcement information 70, setting and retrieving number 51 and resource space 61 in distribution begin coordinate 62, as allocation model identiflication number 71 and distribution beginning coordinate 72, and be notified to mobile radio station 40(step 105).
In step 104, distinguish the branch timing of satisfying request for not being, differentiate and whether have untreated other resource allocation mode 53(step 106), under the situation that has other resource allocation mode 53, select this different resource allocation mode 53(step 109), carry out the later processing of step 104.
In step 106, distinguish under the situation that does not have other resource allocation mode 53, differentiate and whether exist other to distribute beginning coordinate 62(step 107), existing other to begin under the situation of coordinate 62, select other to begin coordinate 62(step 110), repeat the later processing of above-mentioned steps 103.
Under the situation that beginning coordinate 62 uses up in the judgement of step 107, think and to distribute, distribute (step 108) to mobile radio station 40 notice refusals.
In addition, in step 108, also can switch to the method for selecting each resource 60a discretely from the method for the present embodiment of using resource allocation mode 53, thus, resource 60a though amount of information than distributing announcement information 70 to increase, can replace refusing to distribute with the free time is notified to mobile radio station 40.
Figure 12 is the flow chart of an example of determining method that the resource of mobile radio station side is shown.
In mobile radio station 40, at first, in solicited message notice portion 48, generate assignment request information 80, and send it to base station 30(step 201), wait for the response (step 202) from the distribution announcement information 70 of base station 30 sides.
Then, distribute announcement information 70 if receive, then from distribute announcement information 70, read out in the information (step 203) of the beginning coordinate 62 in the pattern recognition numbering of setting in the allocation model identiflication number 71 51 and the resource space of in distributing beginning coordinate 72, setting 61.Then, utilize pattern recognition to number allocation model definition list 50 in the 51 retrieval storage devices 49b, identify corresponding resource allocation mode 53, make up the resource (step 204) that decision will be used with the information of beginning coordinate 62 in the resource space 61.
Then, in sending part 43, set the information (step 205) of the resource that determines, the information communication (step 206) between execution and the base station 30.
Figure 13 is the flow chart of variation that the resource allocation methods of base station 30 sides is shown.In the example of this Figure 13, select to satisfy a plurality of resource allocation mode 53 of assignment request information 80, therefrom determine a resource allocation mode 53 that satisfies assignment request information 80 most, as distributing announcement information 70 to be notified to mobile radio station 40.
Receive assignment request information (step 121) after 80s from mobile radio station 40, at first, select the coordinate (step 122) that begins to distribute the idling-resource in the resource space 61 of resource memory 60.Then, in allocation model definition list 50, select a pattern (step 123) the predefined resource allocation mode 53, compare with idling-resource, judgement could be satisfied the distribution (step 124) of request, (step 134, step 135) retrieved when selecting other resource allocation mode 53 or distributing beginning coordinate 62, till finding assignable resource allocation mode 53 and distributing beginning coordinate 62 (step 126, step 127).
In the process of this retrieval, if in above-mentioned step 124, found assignable beginning coordinate 62 and resource allocation mode 53, then as distributing the candidate to be appended to (step 125) in the candidate list.
Then, be not under the empty situation (step 128) at candidate list, in distributing candidate list, select to satisfy most requested resource allocation model 53(step 129, step 130, step 131, step 132, step 136), as announcement information notification mode identiflication number 51 and distribution beginning coordinate 62(step 133).
As the example based on the distribution request of assignment request information 80, when distributing the resource of time shaft (the 1st reference axis 61a), need to consider the request at postponing.Because the more late then time delay of the time resource that distributes (time slot) is more big, so distribution ratio delay allowance time resource early satisfies request more.Therefore, under this situation, in above-mentioned step 129～step 132, distribute the size of the time of delay among the candidate is the selection that benchmark distributes the candidate with each.
And, as the example that distributes request, when the resource of dividing frequency axle (the 2nd reference axis 61b), particularly under the situation of cutting apart the system that wideer frequency band distributes, under the many environment of multipath, produce frequency selective fading, the quality of reception difference between the frequency band of cutting apart, so, select the good frequency band of communication environments to satisfy request more for satisfying the request quality of reception.Therefore, under this situation, in above-mentioned step 129～step 132, be the selection that benchmark respectively distributes the candidate with the good frequency band of communication environments.
Candidate list is under the situation of sky in step 128, distributes (step 137) to mobile radio station 40 notice refusals.
With reference to Figure 14, illustrate in time, frequency, the sign indicating number any carried out allocation model definition list 50 and the resource memory 60(resource space 61 of branch timing as resource 60a) example.
At first, be illustrated in the situation of under the same frequency time slice is distributed to the user time slot of the quantity corresponding with the request resource amount for the unit slot.Under this situation, because fixed-frequency, so resource space 61 is with the one-dimensional space of time shaft as the 1st reference axis 61a, the arrangement of different time slots is represented in each position of a, b, c, d.In addition, resource allocation mode 53 also can show resource space 61 with coordinate, after determining to start slot, shows other slot with relative coordinate.
Then, equally with reference to Figure 14, illustrate frequency as examples of resources.Here, be the unit slot with time slice, be the unit frequency band with frequency segmentation, the zone that specific unit time slot and unit frequency band are surrounded is distributed the user according to the request resource amount as unit resource.That is, under this situation, the 1st reference axis 61a is frequency axis in resource space 61, and the arrangement of different unit frequency bands is represented in each position of a, b, c, d.Allocation model also can show resource space with coordinate, after determining to start slot, shows other slot with relative coordinate.
Service band carries out under the situation of radio communication in the broadband, in mobile communication environment, because of reflection and a large amount of ripples that postpone of diffraction generation, influenced by it, produces the frequency selective fading of received power and quality of reception change in each narrow-band.Thus, in dividing frequencyband carries out resource distribution mode that resource distributes, decide resource allocation mode 53 according to the change of the frequency axis of received power or the quality of reception, carry out the distribution of the combination of unit frequency band, can carry out the higher communication of resource utilization.
Then, equally with reference to Figure 14, illustrate sign indicating number as examples of resources.Under this situation, because the unitary code different to specific time slot allocation, so, the 1st reference axis 61a is-symbol axle of resource space 61, a, b, c, d are corresponding to different unitary codes.Because relevant hour of intersymbol is easy to separate desired wave and disturbing wave, so when selecting resource allocation mode 53 according to the combination that turns down mutually that makes intersymbol, the quality of reception improves, and can carry out the high communication of resource utilization.
Then, more specifically illustrate time and frequency as examples of resources.Figure 15 is the example of corresponding relation of the resource space 61 of allocation model definition list 50 when illustrating time and frequency as resource and resource memory 60.Under this situation, being the unit time slot with time slice, is unit frequency band (slot) with frequency segmentation, distributes the frequency band corresponding with the request resource amount to the user.The 1st reference axis 61a of resource space 61 is time shafts, and the 2nd reference axis 61b is frequency axis.A～i represents different time slots and each combination in crack frequently.Resource allocation mode 53 also can show resource space 61 with coordinate, after determining to start slot, shows other slot with relative coordinate.
Then, illustrate time, frequency, sign indicating number as examples of resources.Figure 16 is the example of corresponding relation of the resource space 61 of allocation model definition list 50 when illustrating time, frequency, sign indicating number as resource and resource memory 60.Here, the 1st reference axis 61a of resource space 61 is time shafts, and the 2nd reference axis 61b is frequency axis, and the 3rd reference axis 61c is the sign indicating number axle.It is the unit interval with time slice, be the unit frequency band with frequency segmentation, and then utilize the unit area at the segmentation of each yard sequence to constitute resource space 61, according to request resource, come performance time, frequency, this three's of sign indicating number combination with resource allocation mode 53, distribute to the user as resource.Resource allocation mode 53 also can show resource space with coordinate, after determining to start slot, shows other slot with relative coordinate.
Figure 17 is illustrated under the situation of each slot that distributes a plurality of times, frequency and sign indicating number individually, the allocation model definition list 50 when distributing adjacent slot and the relation of resource memory 60.
For example, time shaft is being set at the 1st reference axis 61a, is distributing under the situation of a plurality of time slots, can only the time gone up adjacent time slot as allocation model.Under this situation, because the quantity of resource allocation mode 53 reduces, so pattern recognition numbering 51 reduces, can further cut down the control information amount of distribution announcement information 70 grades that are notified to mobile radio station 40.
Equally, in Figure 17, frequency axis is made as the 1st reference axis 61a, can be only with resource adjacent on the frequency direction as allocation model.Because the quantity of resource allocation mode 53 reduces, so pattern recognition numbering 51 reduces, can further cut down the control information amount of distribution announcement information 70 grades that are notified to mobile radio station 40.
And, in Figure 17, replace frequency and the sign indicating number axle is made as the 1st reference axis 61a, with sign indicating number as the situation of resource similarly, can use resource allocation mode continuous on the designated code direction of principal axis 53.
Figure 18 is illustrated in that the two is appointed as under the situation of resource 60a with frequency and time, only the setting example of the allocation model definition list 50 during adjacent resource on assigned frequency direction or the time orientation.
Also be because the quantity of resource allocation mode 53 reduces, so pattern recognition numbering 51 reduces, can further cut down the control information amount of distribution announcement information 70 grades that are notified to mobile radio station 40 under this situation.
And, replace frequency and when making up as resource to sign indicating number and time, also can use same allocation model.
And then, under the situation of using whole frequencies, time, sign indicating number, also can be only with adjacent resource as allocation model.
Figure 19 illustrates and utilizes allocation model definition list 50 only to specify in adjacent examples of resources on frequency direction or time orientation or the sign indicating number direction.Also be because the quantity of resource allocation mode 53 reduces, so pattern recognition numbering 51 reduces, can further cut down the control information amount of distribution announcement information 70 grades that are notified to mobile radio station 40 under this situation.
Figure 20 illustrates to utilize resource allocation mode 53 appointments to be sent completely constantly the more flow chart of an example of the resource allocation methods of the combination of the resource 60a of morning.
In base station 30, receive assignment request information (step 141) after 80s, in allocation model definition list 50, retrieve the resource allocation mode 53(step 142 that satisfies assignment request information 80 the predefined pattern), compare with idling-resource, judge simultaneously and could distribute (step 143, step 144), (step 152) retrieved when selecting other resource allocation mode 53, till finding assignable resource allocation mode 53 (step 145).
If found a plurality of assignable resource allocation mode 53(steps 146, step 147), then will be sent completely moment pattern the earliest as allocation model.
Namely, in step 144, from a plurality of resource allocation mode 53 that keep, select one (step 147), be assumed to be sent completely constantly than the Zao situation of distribution candidate under, carry out the operation of this resource allocation mode 53 as distribution candidate (step 149), and repeat aforesaid operations (step 150, step 153) at whole assignable resource allocation mode 53.
Then, set resource allocation mode 53 in the allocation model identiflication number 71 that distributes announcement information 70, the distribution of setting in the resource space 61 in distributing beginning coordinate 72 begins coordinate 62, and to mobile radio station 40 notices (step 151).
In step 146, under the situation of candidate's no one of assignable resource allocation mode 53, distribute (step 154) to mobile radio station 40 notice refusals.
Figure 21 is to satisfying the delay allowance ask and being sent completely constantly an example of the flow chart of the resource allocation methods that the combination of resource the earliest distributes.Under this situation, in the step 143 of the flow chart of above-mentioned Figure 20, judgement could be satisfied this point (step 143a) difference of distribution of the delay allowance of asking.
Namely, under this situation, receive request resource amount 81 and delay allowance times 82 back (step 141) as assignment request information 80, in allocation model definition list 50, retrieve the resource allocation mode 53(step 142 that satisfies request resource amount 81 the predefined pattern), with resource memory 60 in idling-resource compare in, judgement could distribute (step 143a, step 144), and retrieves till finding to satisfy delay allowance and assignable resource allocation mode 53 (step 145, step 152).
If found a plurality of assignable patterns, then select to be sent completely moment resource allocation mode 53(step 147, step 148, step 149, step 150, step 153 the earliest).Then, in the allocation model identiflication number 71 that distributes announcement information 70, set resource allocation mode 53, in distributing beginning coordinate 72, set and distribute beginning coordinate 62, and to mobile radio station 40 notices (step 151).
In addition, in step 146, under the situation of candidate's no one of assignable resource allocation mode 53, distribute (step 154) to mobile radio station 40 notice refusals.
In the explanation of above-mentioned wireless resource allocation method, the initial resource allocation mode 53 of selecting at this resource allocation mode 53, is differentiated the idling-resource in the resource space 61 that whether is suitable in the resource memory 60, decide resource allocation mode 53, but also consider opposite situation.
Namely, as as illustrated in the flow chart of Figure 22, if in base station 30, receive assignment request information 80(step 161 from mobile radio station 40), then at first from resource memory 60, extract all and satisfy requested resource 60a(step 162), in the resource group of extracting, whether retrieval exists is in the resource 60a group (step 163) that concerns with resource allocation mode 53 consistent location that defined by allocation model definition list 50, judge and have or not consistent resource allocation mode 53(step 164), finding that consistent resource allocation mode 53(is one or more) situation under, select to satisfy most requested resource allocation model 53, in the allocation model identiflication number 71 that distributes announcement information 70, set resource identification numbering 51, the distribution of setting in the resource space 61 in distributing beginning coordinate 72 begins coordinate 62, and to mobile radio station 40 notices.
In the example of above execution mode, illustrated that the base station comprises the structure of resource allocation section, still, even for example in said apparatus, comprise the structure of the resource of each base station being carried out the resource allocation section of unified management, also can carry out an invention.
Utilizability on the industry
In addition, the invention is not restricted to the illustrated structure of above-mentioned execution mode, in the scope that does not break away from its purport, can carry out all changes certainly.
According to the present invention, carry out in the radio communication of information communication in the reservation of carrying out Radio Resource and distribution, can cut down the needed amount of information of notice wireless resource allocation result.
And, carry out in the radio communication of information communication in the reservation of carrying out Radio Resource and distribution, can prevent the propagation delay that increases the communication information that causes because of the needed amount of information of notice wireless resource allocation result.
Claims (2)
1. wireless resource allocation methods, this method are used for the 1st radio communication device and the 2nd radio communication device uses institute's assigned radio resource to carry out the wireless communication system of radio communication, it is characterized in that,
The pre-prepd a plurality of resource allocation mode that are positioned at the resource management space of the 1st radio communication device storage, from a plurality of resource allocation mode that comprise the starting position, select based on the resource allocation mode allocation of radio resources solicited message and that comprise the starting position, the selected pattern recognition information that comprises the resource allocation mode of starting position of expression is notified to described the 2nd radio communication device.
2. a communicator is characterized in that, this communicator has:
Memory cell, it keeps a plurality of resource allocation mode, and these a plurality of resource allocation mode comprise the resource starting position in the resource management space and are used to specify the various combination of the described Radio Resource in the described resource management space of managing radio resources;
The solicited message detecting unit, it detects the allocation of radio resources solicited message;
Selected cell, it selects to satisfy resource allocation mode described assignment request information and that comprise described starting position from a plurality of resource allocation mode that comprise the starting position; And
The assignment information notification unit, the selected pattern recognition information that comprises the resource allocation mode of described starting position of its notice expression.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20020102981A1 (en) * | 2001-01-29 | 2002-08-01 | Mitsubishi Denki Kabushiki Kaisha | Method for implicit allocation of resources |
| CN1404241A (en) * | 2001-08-30 | 2003-03-19 | 华为技术有限公司 | Residential broadcast business transmitting method |
| US20040127223A1 (en) * | 2002-09-30 | 2004-07-01 | Samsung Electronics Co., Ltd. | Apparatus and method for allocating resources of a virtual cell in an OFDM mobile communication system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020102981A1 (en) * | 2001-01-29 | 2002-08-01 | Mitsubishi Denki Kabushiki Kaisha | Method for implicit allocation of resources |
| CN1404241A (en) * | 2001-08-30 | 2003-03-19 | 华为技术有限公司 | Residential broadcast business transmitting method |
| US20040127223A1 (en) * | 2002-09-30 | 2004-07-01 | Samsung Electronics Co., Ltd. | Apparatus and method for allocating resources of a virtual cell in an OFDM mobile communication system |
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