CN101047585A - Resource allocating method, customer group method and resource allocating system - Google Patents
Resource allocating method, customer group method and resource allocating system Download PDFInfo
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- CN101047585A CN101047585A CN200610081700.3A CN200610081700A CN101047585A CN 101047585 A CN101047585 A CN 101047585A CN 200610081700 A CN200610081700 A CN 200610081700A CN 101047585 A CN101047585 A CN 101047585A
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Abstract
A method for indication-distributing resource includes using forward data packet format update module to make transmission format update indication-distribution (TFUID) under forward single-in and single-out antenna mode, using forward single code word data format update module to make TFUID under forward single code word multiin-multiout antenna mode, using forward multi-code word data packet format update module to make TFUID under forward multi-code word multiin-multiout antenna mode and using backward data packet format update module to make TFUID under backward single-in and single-out antenna mode.
Description
Technical field
The present invention relates to the communications field, and more particularly, relate to a kind of resource allocation method, user packet method and resource allocation system, it can be applied to the communication system such as OFDM (OFDM) system.
Background technology
OFDM (OFDM) technology is a kind of physical-layer techniques that adopts among the IEEE802.20 (access of MBWA mobile broadband wireless).The OFDM technology is divided into the narrow-band sub-carriers of some quadratures with the physical layer resources in the wireless communication system in frequency domain, high-speed data-flow parallel transmission by string and conversion and on each subcarrier.Because the narrow-band characteristic of subcarrier can overcome multi-path influence, so eliminated intersymbol interference greatly; Because the orthogonal property of subcarrier, i.e. the overlapped characteristic of frequency spectrum between subcarrier is so improved the utilance of frequency spectrum.Therefore, in wireless communication system, use the OFDM technology progressively becoming the development trend of mobile communication system.
Physical layer resources in the ofdm system can be regarded the two dimensional surface that is formed by " time domain " and " frequency domain " as, wherein, the available frequencies resource is divided into N fundamental frequency transmission unit, a fundamental frequency transmission unit can be a subcarrier, also can be the frequency subband that consists of a plurality of sub-carriers; Simultaneously, the physical layer resources in the transmission time periods (OFDM frame) by M basic time transmission unit constitute, and each basic transmission time unit comprises one or more OFDM symbol.
The OFDM wireless communication system is distributed to each customer traffic according to scheduling process with the fundamental frequency transmission unit in the basic transmission time unit, notifies the travelling carriage receiving terminal by forward control channel with scheduling result then.
In wireless air interface, the agreement relevant with resource assignation relates generally to physical layer protocol and medium access control (MAC) layer protocol.For the support resource assignment process, AN (Access Network, Access Network) side has designed the assignment process that a forward direction common signaling control channel F-SSCH is used to finish resource.Especially, the resource assignation module among the F-SSCH as shown in Figure 1.
MAC PDU (protocol Data Unit) from each subscriber equipment of BSC (base station services controller), at first be assigned to buffer memory in the different formations according to the MAC ID of MAC PDU sign, wait for then that the AN scheduling is gone up at F-DCH (forward data channel (FDC)) to send by the buffer queue processing unit.
AN (Access Network) sends the data in each MAC ID formation of each subscriber equipment at each physical frame and dispatches, and promptly AN selects the MAC PDU of the some in a certain formation in the F-DCH of current physical frame channel according to certain dispatching algorithm.The F-SSCH channel that transmits on same physical frame simultaneously is responsible for notifying each MAC PDU of AT (AccessTerminal accesses terminal) employed such as information such as physical layer sub-carrier resources, transformats.
With reference to Fig. 1, it shows the form of the resource assignation module among the F-SSCH in the correlation technique, can see, the resource assignation mode among the F-SSCH is divided into adhesive pattern (sticky) and non-adhesive pattern (non-sticky).Wherein, adhesive pattern is meant that the resource and the transformat that begin institute's assignment from successful assignment no longer change, and disconnects or carries out assignment again until link, and pairing distribution modulator comprises FLAB, MCWFLAB1, MCWFLAB2, SCWFLAB and RLAB.Non-adhesive pattern is meant that current assignment is only effective to current data packets for transmission, packet success demodulation or HARQ retransmission processes finish then that assignment ceases to be in force automatically, and pairing distribution modulator comprises NS-FLAB, NS-MCWFLAB1, NS-MCWFLAB2, NS-SCWFLAB and NS-RLAB.Different distribution modulators is that the Block Type (module type) by 4 bits identifies, and has used 11 kinds of module types at present, still has 4 kinds of reservations not use.
In correlation technique, the transformat that MAC PDU is distributed is to obtain according to the CQI (channel quality indication) that the AT end reports.Available fl transmission form as shown in Figure 2, the reverse transfer form has defined transmission frequency spectra efficient for the first time, parameters such as maximum retransmission and order of modulation as shown in Figure 3, being divided into is 16 kinds of transformats, is identified by 4 bit PacketFormat Index (packet format/transformat index).
Equally as shown in Figure 1, in the resource assignation module of F-SSCH, sub-carrier resources indication (ChID) and transformat indication (PF) are bundled in the same module.Like this, under the assignment mode of adhesive pattern, the resource assignation of MAC PDU correspondence does not change in a long time, therefore, this mode has been saved the allocation overhead of forward control channel, and still, the transformat of MAC PDU (PF) can not be according to the variation of wireless channel and the self adaptation adjustment, the error rate increases when making the wireless channel environment variation like this, has reduced utilization ratio of wireless resources when perhaps wireless channel environment improves.
Therefore, need a kind of resource allocation method, it makes that under adhesive pattern the transformat of MACPDU (PF) can carry out the self adaptation adjustment according to the variation of wireless channel, thereby overcomes the problem that the error rate increases and wireless resource utility efficiency reduces.
Summary of the invention
Consider the problems referred to above and make the present invention.The object of the present invention is to provide a kind of resource allocation method and user packet method, by using this method, under adhesive pattern, the transformat of MACPDU (PF) can carry out the self adaptation adjustment according to the variation of wireless channel, thereby reduces the error rate of wireless transmission and improve utilization ratio of wireless resources.
According to an aspect of the present invention, a kind of resource allocation method is provided, it uses a kind of new resource assignation modular structure, this structure comprises four kinds of distribution modulators, and promptly the forward data packet format upgrades (FPF_UPDATE) module, forward direction single codeword data packet format upgrades (FSCWPF_UPDATE) module, many code words of forward direction data packet format renewal (FMCWPF_UPDATE) module and reverse data packet format and upgrades (RPF_UPDATE) module.
Especially, above-mentioned four kinds of distribution modulators correspond respectively in the correlation technique before four kinds under the adhesive pattern/reverse distribution modulator.
Particularly, the FPF_UPDATE module is used for the transformat renewal assignment under forward direction SISO (singly going into the singly) antenna mode; The transformat that the FSCWPF_UPDATE module is used under forward direction SCW MIMO (single codeword multiple-input, multiple-output) antenna mode upgrades assignment; The transformat that the FMCWPF_UPDATE module is used under forward direction MCW MIMO (multiple-input, multiple-output of the many code words) antenna mode upgrades assignment; And the transformat that the RPF_UPDATE module is used under reverse SISO (singly going into the singly) antenna mode upgrades assignment.
Merit attention to such an extent that be, the module type sign of above-mentioned resource assignation module still adopts the module type of its pairing resource assignation module respectively, particularly, the module type of FPF_UPDATE module is identical with the module type of forward link distribution module (FLAB); The module type of FSCWPF_UPDATE module is identical with the module type of single codeword forward link distribution module (SCWFLAB); The module type of FMCWPF_UPDATE module is identical with the module type of many code words forward link distribution module (MCWFLAB); And the module type of RPF_UPDATE module is identical with the module type of backward chaining distribution module (RLAB).For each identical module of above-mentioned module type, in module, distinguished with the Format Type of 1 bit.
In addition, the length of the length of above-mentioned four kinds of resource assignation modules and the resource assignation module in the correlation technique is approximate, usually, is less than or equal to the length of the resource assignation module in the correlation technique, like this, can satisfy the isometric requirement of all distribution modulators by limited filler.
By using according to resource allocation method of the present invention, under situation with the adhesive pattern assigned resources, after the access network side is finished the successful assignment first time of MAC ID, if satisfy the trigger condition that transformat upgrades, then in F-SSCH, finish the transformat renewal of corresponding data transmission link by above-mentioned distribution modulator.
Above-mentioned trigger condition can include but not limited to following several situation:
1. trigger condition is a predetermined period, that is, when having passed through predetermined period, new transport format more;
2. trigger condition is the difference of CQI (channel quality indication) value, that is, when the double difference between the CQI value of access network side feedback of the side that accesses terminal is in preset range, new transport format more;
3. trigger condition is correctly to reply continuously or the number of times of wrong responses, that is, when correctly replying continuously or the number of times of wrong responses when reaching pre-determined number, new transport format more.
But, under with the situation of adhesive pattern assigned resources, come more new transport format according to trigger condition, may there be the problem that increases overhead.
For this reason, according to a further aspect in the invention, provide a kind of user packet method, it is divided into a plurality of groupings according to channel quality indicated value with the user in the network, and identifies each grouping with group ID.Wherein, the quantity of grouping equals the quantity of data packet transmission format classification.
Especially, can be according to resource allocation method of the present invention by user grouping is arranged resource.By means of resource allocation method according to the present invention and user packet method, for singly go into singly go out with the single codeword MIMO mode under PF_UPDATE, can upgrade two groups of users' that Group ID1 and Group ID2 identified transformat configuration simultaneously at every turn.
According to another aspect of the invention, provide a kind of resource allocation system, having comprised:
The forward data packet format upgrades (FPF_UPDATE) module, and the transformat that is used under forward direction SISO (singly going into the singly) antenna mode upgrades assignment, and its module type is identical with the module type of forward link distribution module (FLAB);
Forward direction single codeword data packet format upgrades (FSCWPF_UPDATE) module, the transformat that is used under forward direction SCW MIMO (single codeword multiple-input, multiple-output) antenna mode upgrades assignment, and its module type is identical with the module type of single codeword forward link distribution module (SCWFLAB);
Many code words of forward direction data packet format upgrades (FMCWPF_UPDATE) module, the transformat that is used under forward direction MCW MIMO (multiple-input, multiple-output of the many code words) antenna mode upgrades assignment, its module type is identical with the module type of many code words forward link distribution module (MCWFLAB), and
The reverse data packet format upgrades (RPF_UPDATE) module, and the transformat that is used under reverse SISO (singly going into the singly) antenna mode upgrades assignment, and its module type is identical with the module type of backward chaining distribution module (RLAB).
By above technical scheme, the present invention has realized following beneficial effect: under adhesive pattern, the transformat (PF) of medium access control PDU (data protocol unit) can carry out the self adaptation adjustment according to the variation of wireless channel, thereby has overcome the problem that the error rate increases and wireless resource utility efficiency reduces.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and exemplary embodiment of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the F-SSCH block structured form that illustrates according to correlation technique;
Fig. 2 is the form that illustrates according to the fl transmission form of correlation technique;
Fig. 3 is the form that illustrates according to the reverse transfer form of correlation technique;
Fig. 4 illustrates according to F-SSCH block structured form of the present invention; And
Fig. 5 is the block diagram that illustrates according to the resource allocation system structure of third embodiment of the invention.
Embodiment
Hereinafter with reference to accompanying drawing embodiments of the invention are described.
First embodiment
As shown in Figure 4, resource allocation method according to first embodiment of the invention uses a kind of new resource assignation modular structure, this structure comprises four kinds of distribution modulators, be FPF_UPDATE module, FSCWPF_UPDATE module, FMCWPF_UPDATE module and RPF_UPDATE module, above-mentioned four kinds of distribution modulators correspond respectively in the correlation technique before four kinds under the adhesive pattern/reverse distribution modulator.
The transformat that the FPF_UPDATE module is used under forward direction SISO (singly going into the singly) antenna mode upgrades assignment, with Block Type (module type) " 0101 " sign of FLAB module; The transformat that the FSCWPF_UPDATE module is used under forward direction SCW MIMO (single codeword multiple-input, multiple-output) antenna mode upgrades assignment, with BlockType " 1000 " sign of SCWFLAB module; The transformat that the FMCWPF_UPDATE module is used under forward direction MCW MIMO (multiple-input, multiple-output of the many code words) antenna mode upgrades assignment, with Block Type " 0110 " sign of MCWFLAB1 module; And the transformat that the RPF_UPDATE module is used under reverse SISO (singly going into the singly) antenna mode upgrades assignment, Block Type " 1001 " sign of usefulness RLAB module.
Especially, as shown in Figure 4, the length of the length of above-mentioned four kinds of resource assignation modules and the resource assignation module in the correlation technique is approximate, particularly, the length of FPF_UPDATE module and RPF_UPDATE module is 21 bits, the length of FSCWPF_UPDATE module is 19 bits, and the length of FMCWPF_UPDATE module is 10+4* (N
EFF_TX_ANT-1), wherein, N
EFF_TX_ANT-1Quantity for effective antenna in the system like this, can satisfy the isometric requirement of all distribution modulators by limited filler.
Continuation is with reference to Fig. 4, and the Block Type of above-mentioned resource assignation module sign still adopts the Block Type of its pairing resource assignation module respectively, and the Format Type with 1 bit is distinguished in module.
By using according to resource allocation method of the present invention, under situation with the adhesive pattern assigned resources, after the AN side is finished the successful assignment first time of MAC ID, if satisfy the trigger condition that transformat upgrades, then in F-SSCH, finish the transformat renewal of corresponding data transmission link by above-mentioned distribution modulator.
Above-mentioned trigger condition can include but not limited to following several situation:
1. trigger condition is a predetermined period, that is, when having passed through predetermined period, new transport format more;
2. trigger condition is the difference of CQI (channel quality indication) value, that is, when the double difference between the CQI value of access network side feedback of the side that accesses terminal is in preset range, new transport format more;
3. trigger condition is correctly to reply continuously or the number of times of wrong responses, that is, when correctly replying continuously or the number of times of wrong responses when reaching pre-determined number, new transport format more.
Second embodiment
Under with the situation of adhesive pattern assigned resources, come more new transport format, may have the problem that increases overhead according to trigger condition.For this reason, provide a kind of user packet method according to a second embodiment of the present invention, it is divided into a plurality of groupings according to channel quality indicated value with the user in the network, and identifies each grouping with group ID.
Wherein, the quantity of grouping equals the quantity of data packet transmission format classification, as shown in Figure 2,16 kinds of transformats in correlation technique, have been adopted, therefore, according to the CQI value user in the network is divided into 16 groupings, by the Group ID sign of 4 bits according to the user packet method of the embodiment of the invention.
Especially, resource allocation method according to first embodiment of the invention can use this user packet method, for instance, for singly go into singly go out with the single codeword MIMO mode under PF_UPDATE, can upgrade two groups of users' that Group ID1 and Group ID2 identified transformat configuration simultaneously at every turn.And when the AT side receives identical resource assignation module of Block Type and resource assignation update module simultaneously, ignore the resource assignation update module.
The 3rd embodiment
Describe a third embodiment in accordance with the invention hereinafter with reference to Fig. 5, wherein, Fig. 5 is the block diagram that illustrates according to the resource allocation system structure of third embodiment of the invention.
Resource allocation system 500 according to the present invention comprises:
The forward data packet format upgrades (FPF_UPDATE) module 502, and the transformat that is used under forward direction SISO (singly going into the singly) antenna mode upgrades assignment, and its module type is identical with the module type of forward link distribution module (FLAB);
Forward direction single codeword data packet format upgrades (FSCWPF_UPDATE) module 504, the transformat that is used under forward direction SCW MIMO (single codeword multiple-input, multiple-output) antenna mode upgrades assignment, and its module type is identical with the module type of single codeword forward link distribution module (SCWFLAB);
Many code words of forward direction data packet format upgrades (FMCWPF_UPDATE) module 506, the transformat that is used under forward direction MCW MIMO (multiple-input, multiple-output of the many code words) antenna mode upgrades assignment, its module type is identical with the module type of many code words forward link distribution module (MCWFLAB), and
The reverse data packet format upgrades (RPF_UPDATE) module 508, and the transformat that is used under reverse SISO (singly going into the singly) antenna mode upgrades assignment, and its module type is identical with the module type of backward chaining distribution module (RLAB).
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (18)
1. a resource allocation method is characterized in that, uses the resource assignation modular structure that comprises following distribution modulator:
Forward data packet format update module is used for the transformat that the forward direction list goes into singly to go out under the antenna mode and upgrades assignment;
Forward direction single codeword data packet format update module, the transformat that is used under the forward direction single codeword mimo antennas pattern upgrades assignment;
Many code words of forward direction data packet format update module, the transformat that is used under many code words of forward direction mimo antennas pattern upgrades assignment; And
Reverse data packet format update module, the transformat that is used for oppositely singly going into singly to go out under the antenna mode upgrades assignment.
2. resource allocation method according to claim 1 is characterized in that,
The module type of described forward data packet format update module is identical with the module type of forward link distribution module;
The module type of described forward direction single codeword data packet format update module is identical with the module type of single codeword forward link distribution module;
The module type of described many code words of forward direction data packet format update module is identical with the module type of many code words forward link distribution module; And
The module type of described reverse data packet format update module is identical with the module type of backward chaining distribution module.
3. resource allocation method according to claim 1 is characterized in that each in the described distribution modulator all comprises the Format Type of a bit, and described Format Type is respectively applied for distinguishes described distribution modulator and the module identical with its module type.
4. resource allocation method according to claim 1 is characterized in that,
The length of described forward data packet format update module is less than or equal to the length of described forward link distribution module;
The length of described forward direction single codeword data packet format update module is less than or equal to the length of described single codeword forward link distribution module;
The length of described many code words of forward direction data packet format update module is less than or equal to the length of described many code words forward link distribution module; And
The length of described reverse data packet format update module is less than or equal to the length of described backward chaining distribution module.
5. resource allocation method according to claim 1, it is characterized in that, under situation with the adhesive pattern assigned resources, after the access network side is finished the successful assignment first time of medium access control ID, if satisfy the trigger condition that transformat upgrades, then finish transformat and upgrade by described distribution modulator.
6. resource allocation method according to claim 5 is characterized in that described trigger condition is a predetermined period, when having passed through predetermined period, and new transport format more.
7. resource allocation method according to claim 5, it is characterized in that, described trigger condition is the difference of channel quality indicated value, when the double difference between the channel quality indicated value of access network side feedback of the side that accesses terminal is in preset range, and new transport format more.
8. resource allocation method according to claim 5 is characterized in that, described trigger condition is correctly to reply continuously or the number of times of wrong responses, when correctly replying continuously or the number of times of wrong responses when reaching pre-determined number, and new transport format more.
9. resource allocation method according to claim 1 is characterized in that, adopts the mode of user grouping is finished resource assignation.
10. resource allocation method according to claim 9 is characterized in that, according to channel quality indicated value the user in the network is divided into a plurality of groupings, and identifies each grouping with group ID.
11. resource allocation method according to claim 9 is characterized in that, the quantity of described grouping equals the quantity of data packet transmission format classification.
12. resource allocation methods according to claim 9 is characterized in that, described distribution modulator carries out transformat according to described grouping to be upgraded.
13. a user packet method is characterized in that, according to channel quality indicated value the user in the network is divided into a plurality of groupings, and identifies each grouping with group ID.
14. user packet method according to claim 13 is characterized in that, the quantity of described grouping equals the quantity of data packet transmission format classification.
15. a resource allocation system is characterized in that, comprising:
Forward data packet format update module is used for the transformat that the forward direction list goes into singly to go out under the antenna mode and upgrades assignment;
Forward direction single codeword data packet format update module, the transformat that is used under the forward direction single codeword mimo antennas pattern upgrades assignment;
Many code words of forward direction data packet format update module, the transformat that is used under many code words of forward direction mimo antennas pattern upgrades assignment; And
Reverse data packet format update module, the transformat that is used for oppositely singly going into singly to go out under the antenna mode upgrades assignment.
16. resource allocation system according to claim 15 is characterized in that,
The module type of described forward data packet format update module is identical with the module type of forward link distribution module;
The module type of described forward direction single codeword data packet format update module is identical with the module type of single codeword forward link distribution module;
The module type of described many code words of forward direction data packet format update module is identical with the module type of many code words forward link distribution module; And
The module type of described reverse data packet format update module is identical with the module type of backward chaining distribution module.
17. resource allocation system according to claim 15 is characterized in that, each in the described distribution modulator all comprises the Format Type of a bit, and described Format Type is respectively applied for distinguishes described distribution modulator and the module identical with its module type.
18. resource allocation system according to claim 15 is characterized in that,
The length of described forward data packet format update module is less than or equal to the length of described forward link distribution module;
The length of described forward direction single codeword data packet format update module is less than or equal to the length of described single codeword forward link distribution module;
The length of described many code words of forward direction data packet format update module is less than or equal to the length of described many code words forward link distribution module; And
The length of described reverse data packet format update module is less than or equal to the length of described backward chaining distribution module.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102340875A (en) * | 2010-07-23 | 2012-02-01 | 华为技术有限公司 | Method and device for allocating resources |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340875A (en) * | 2010-07-23 | 2012-02-01 | 华为技术有限公司 | Method and device for allocating resources |
| CN102340875B (en) * | 2010-07-23 | 2014-03-26 | 华为技术有限公司 | Method and device for allocating resources |
| US9179441B2 (en) | 2010-07-23 | 2015-11-03 | Huawei Technologies Co., Ltd. | Resource allocation method and apparatus |
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