CN101465800B - Resource configuration method - Google Patents
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- CN101465800B CN101465800B CN2007103039060A CN200710303906A CN101465800B CN 101465800 B CN101465800 B CN 101465800B CN 2007103039060 A CN2007103039060 A CN 2007103039060A CN 200710303906 A CN200710303906 A CN 200710303906A CN 101465800 B CN101465800 B CN 101465800B
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Abstract
The embodiment of the invention discloses a resource allocation method, including the following steps: fixing a TDM period in the TDM parameter assemblies allocated to MBMS service according to the ratio of the bandwidth of a forward access channel(FACH) to the service speed rate of the MBMS service which wants to share the FACH; checking up the occupation situation of the TDM parameter assemblies corresponding to the fixed TDM period, and if none of the TDM parameters is occupied, selecting one of the TDM parameter assemblies to allocate to the MBMS service; if the TDM parameter assemblies are partly occupied, selecting one from the unoccupied assemblies, and allocating the rest TDM parameter assembly with the largest continuous bandwidth to the MBMS service. The resource allocation method can improve utilization ratio of the bandwidth, thereby improving the utilization ratio of the wireless resource.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of resource allocation method.
Background technology
In the prior art,, proposed in multimedia broadcast multi-broadcasting business (MBMS) implementation procedure in order further to improve the utilance of resource, the thought of a plurality of service time division multiplexes (TDM) identical physical resources, but do not provide concrete resource allocation methods.
Common resource allocation methods can for: checking in the shared physical resource whether can also carry new business, if can carry, then is new business configuration TDM parameter, does not have clear and definite scheme but specifically how to dispose the TDM parameter.In fact, whether suitable TDM parameter configuration will directly have influence on physical resource utilization.
In order to support a plurality of MBMS service time division multiplex identical physical resources, increased the cell MBSFN TDM Information List that characterizes TDM information in the existing protocol, if agreement regulation cell MBSFNTDM Information List exists, then subscriber equipment (UE) is only gone up in the connection frame number (CFN) that satisfies formula (1) and is received corresponding M BMS service conversation:
(CFN?div?N)mod?TDM_Rep＝TDM_Offset (1)
Wherein, N is the Transmission Time Interval (TTI) of forward access channel (FACH), i.e. FACH dispatching cycle, the professional corresponding FACH of MBMS equals the bandwidth of this FACH and the ratio of the service rate of corresponding MBMS business dispatching cycle; Two TDM parameters of TDM_Rep and TDM_Offset are the pre-configured corresponding MBMS business of giving, and wherein TDM_Rep is the TDM cycle, and the span of stipulating in the agreement is 2 to 9 integer; TDM_Offset is the TDM skew, and the span of stipulating in the agreement is 0 to 8 integer.
More clear in order to illustrate, set the professional corresponding MBMS point of each MBMS to multicast communication channel (MTCH), the physical resource of sharing is FACH, the multiplexing same FACH of promptly a plurality of MTCH.Which in advance for the TDM_Rep of MBMS business configuration and TDM_Offset parameter have determined what FACH the professional corresponding MTCH of this MBMS needs just can be scheduled once dispatching cycle, and be scheduled dispatching cycle at FACH.Particularly, TDM_Rep and TDM_Offset parameter have determined UE in the MBMS business that TDM_Offset dispatching cycle receive correspondence of every TDM_Rep FACH in dispatching cycle.
TDM_Rep and two parameters of TDM_Offset the service rate that need consider the MBMS business is set, and FACH can loaded service speed, the i.e. bandwidth of FACH.If it is bad that these two parameters are provided with, then can cause waste of radio resources.
Illustrate: set FACH and have the bandwidth of 256K, have the MBMS business of two 64K and the MBMS business of a 128K now,, then may cause certain business wherein not to be re-used if the TDM parameter configuration is improper.For example, if the TDM_Rep of the MBMS business configuration of a 64k and TDM_Offset parameter are (4,1), here (4,1) implication is meant for this 64k business, per 4 FACH dispatching cycles are as a large period, and the transmission cycle that be this MBMS business the 1st dispatching cycle in wherein per 4.The TDM_Rep of the MBMS business configuration of another one 64K and TDM_Offset parameter are (4,3), the transmission cycle that 3rd dispatching cycle of promptly per 4 FACH in dispatching cycle is this MBMS business.Under this configuring condition, large period comprises four FACH dispatching cycles, and the MBMS business of two 64K has taken the 1st and the 3rd cycle in each large period respectively, though the bandwidth of FACH also remains 128k like this, but because remaining 128K bandwidth is in per 4 FACH in two discontinuous cycles in dispatching cycle, so the MBMS business of 128K can't be multiplexed on the above-mentioned FACH.This shows that the configuration management of TDM parameter directly has influence on the utilization ratio of Radio Resource.
In a word, when not proposing a plurality of service time division multiplex identical physical resources in the prior art as yet, guarantee the resource allocation method of Radio Resource utilization ratio.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of resource allocation method, improves utilization ratio of wireless resources.
A kind of resource allocation method that the embodiment of the invention provides comprises:
According to the bandwidth of forward access channel FACH ratio, be defined as the TDM cycle in the TDM parameter combinations of described MBMS business configuration with the service rate of the MBMS business that will share this FACH; Wherein, described each TDM parameter combinations comprises: TDM cycle and TDM skew; If the situation that takies of the TDM parameter combinations of the TDM cycle correspondence that inspection is determined all unoccupied, then selects one of them TDM parameter combinations to dispose to described MBMS business; If there is part TDM parameter combinations occupied, then therefrom choose one unoccupied, and make the TDM parameter combinations of residue continuous bandwidth maximum dispose to described MBMS business.
By the description of above technical scheme as can be known, when the embodiment of the invention is given MBMS business configuration TDM parameter combinations at needs, at first be defined as the TDM cycle in the TDM parameter combinations of this MBMS business configuration; Check the situation that takies of the TDM parameter combinations of the TDM cycle correspondence determine afterwards, if there is part TDM parameter combinations occupied, then select one unoccupied, and make the TDM parameter combinations of residue continuous bandwidth maximum dispose to this MBMS business.Owing to when adopting said method to be MBMS business configuration resource, consider the principle of residue continuous bandwidth maximum, therefore can improve the FACH bandwidth utilization to greatest extent, improve utilization ratio of wireless resources.
Description of drawings
Fig. 1 is the schematic diagram of the corresponding relation of 4 TDM parameter combinations and FACH dispatching cycle for the TDM cycle in the embodiment of the invention;
Fig. 2 is the flow chart of resource allocation method embodiment one of the present invention;
Fig. 3 is the resource release flow figure of the embodiment of the invention;
Fig. 4 is the binary tree schematic diagram of the embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme and beneficial effect clearer,, the present invention is done detailed description further below in conjunction with embodiment and accompanying drawing.
The resource allocation method that the embodiment of the invention provides comprises:
According to the bandwidth of FACH ratio, be defined as the TDM cycle in the TDM parameter combinations of this MBMS business configuration with the service rate of the MBMS business that will share this FACH;
If the situation that takies of the TDM parameter combinations of the TDM cycle correspondence that inspection is determined all unoccupied, then selects one of them TDM parameter combinations to dispose to this MBMS business; If there is part TDM parameter combinations occupied, then therefrom choose one unoccupied, and make the TDM parameter combinations of residue continuous bandwidth maximum dispose to this MBMS business.
Wherein, check the TDM cycle correspondence determine the TDM parameter combinations take situation the time, can check successively by after arriving first according to the dispatching sequence of the FACH dispatching cycle of these TDM parameter combinations correspondences.
When the TDM parameter combinations of the TDM cycle correspondence of determining is all unoccupied, for this MBMS business configuration TDM parameter combinations can for:
From the TDM parameter combinations of the TDM cycle correspondence determined, select a configuration to give this MBMS business arbitrarily; Perhaps, with correspondence at first or last FACH dispatching cycle, make the TDM parameter combinations of residue continuous bandwidth maximum dispose to this MBMS business.
Realize above-mentioned resource allocation methods, need to generate in advance the various TDM parameter combinations of configuration FACH bandwidth resources, these TDM parameter combinations can be in advance according to the bandwidth of FACH and the service rate generation that will share all kinds of MBMS business of this FACH, and each TDM parameter combinations comprises: TDM cycle and TDM skew.The TDM cycle equals the bandwidth of FACH and the ratio of the service rate of each the class MBMS business that will share this FACH; The span of the TDM skew in the TDM parameter combinations of each TDM cycle correspondence is for subtracting 1 more than or equal to the 0 TDM cycle smaller or equal to correspondence.
Such as, a FACH bandwidth 256k, the service rate of sharing the MBMS business of this FACH comprises: two kinds of 128k and 64k, then according to the method described above as can be known, this value that disposes the TDM cycle in all TDM parameter combinations of this FACH bandwidth resources can be 256/128=2, perhaps 256/64=4, and all TDM parameter combinations that then dispose these FACH bandwidth resources comprise: (2,0), (2,1); (4,0), (4,1), (4,2), (4,3).
Check the situation that takies of TDM parameter combinations, need to distinguish occupied and unappropriated TDM parameter combinations.In addition, in order to reuse to Radio Resource, after a MBMS service ending, need to discharge the TDM parameter combinations that this MBMS business is given in configuration, other MBMS is professional to be used so that configuration is given, and the realization of this step need be distinguished occupied and unappropriated TDM parameter combinations equally.A kind of concrete implementation method is: set one and taken sign, not having to add the TDM parameter combinations that has taken sign is unappropriated TDM parameter combinations, after being the good TDM parameter combinations of MBMS business configuration, for this TDM parameter combinations interpolation has taken sign; When the MBMS service ending, that deletes TDM parameter combinations that this MBMS business takies takies sign.Certainly, here be a kind of to taking the method for distinguishing with vacant TDM parameter combinations, also have a variety of modes in actual the realization, such as can also in advance all TDM parameter combinations being added unoccupied sign, if some TDM parameter combinations are configured the business to MBMS, then the unoccupied sign of this TDM parameter combinations is deleted, or it is revised as the occupied sign of predesignating.Various implementations can't be exhaustive complete, repeats no more here.
A specific embodiment illustrates above-mentioned resource allocation methods: set FACH bandwidth t
fBe 256k, the current service rate t that will share the MBMS business of this FACH
mBe 64k, then at first according to t
f/ t
mValue TDM cycle of being defined as this business configuration be 4, check that afterwards the TDM cycle is the situation that takies of all TDM parameter combinations of 4, promptly (4,0), (4,1), (4,2) and the situation that takies of (4,3), Fig. a kind has provided the schematic diagram that TDM cycle among this embodiment is the corresponding relation of 4 various TDM parameter combinations and FACH dispatching cycle.If all unoccupied, then wherein this MBMS business is given in any one configuration, perhaps will make (4,0) or (4,3) configuration of residue continuous bandwidth maximum give this MBMS business.
If it is occupied to be checked through (4,1), then will be with (4,1) adjacent (4 of the residue continuous bandwidth maximum that makes, 0) distribute to this MBMS business, the remaining continuous bandwidth of FACH is 128K like this, that is to say that this FACH can also support the MBMS business that a service rate is 128K.
Generate in advance configuration FACH bandwidth resources various TDM parameter combinations method can also for: according to the bandwidth of FACH and the minimum value that will share the service rate in all kinds of MBMS business of this FACH, generate the node of the corresponding binary tree of each TDM parameter combinations according to the binary tree mode.
Provide all TDM parameter combinations that adopt the binary tree mode to generate these FACH bandwidth resources of configuration below, be the specific embodiment that the MBMS business is carried out resource distribution, its flow chart specifically comprises the steps: as shown in Figure 2
Step 101 according to the bandwidth of FACH with share the ratio of minimum value of service rate of all kinds of MBMS business of this FACH, is set up corresponding binary tree.
Among this embodiment, the bandwidth of setting FACH is t
f, the bandwidth of each MBMS business, i.e. the speed t of each MBMS business
mExpression.T wherein
mAnd t
fBetween be the even-multiple relation, and t
f＞=t
m, each service rate t
mBetween also be the even-multiple relation.t
m(min) be minimum service rate, t
f/ t
m(min)=and N, N is FACH dispatching cycle.
Can adopt following rule to generate the binary tree that characterizes all TDM parameter combinations:
Root node is (1,0); The corresponding a kind of TDM parameter combinations of each node, collocation form be (a, b), wherein a is TDM_Rep, b is TDM_Offset; The number of plies at node place is n, and the n value is 1,2 in the present embodiment, 3...N, N=t
f/ t
m(min), N in theory can be infinitely great, but consider actual use, significant span be generally N more than or equal to 1 smaller or equal to 5.
According to the organizational form of this binary tree, the value of n layer a is 2
N-1The span of b be (0,1 ..., (2
N-1-1)); Be set in this binary tree, if node be (a, b), then Dui Ying left child node and right child node can be respectively (2a, b) with (2a, b+a), the two is the brotgher of node, i.e. FACH continuous distribution dispatching cycle of these two node representatives.The order of same each node of level of this binary tree is that from top to bottom, below the child node under father node occupies came, above the child node on father node occupies came, left child node occupied down in two child nodes of same father node, on right child node occupies.
What more than provide is the mode of a kind of concrete generation binary tree, and in actual applications, the create-rule of binary tree has a variety of, enumerates no longer one by one here.
When the MBMS service needed is shared this FACH, for the process of this MBMS traffic assignments TDM parameter combinations comprises the steps:
Step 102 is according to the bandwidth of FACH with will share ratio t between the service rate of MBMS business of this FACH
f/ t
m, be defined as the number of plies n at the TDM parameter combinations place of this MBMS business configuration.
Here, in case number of plies n is definite, then be that the value a of the TDM_Rep of this MBMS business configuration has just determined a=2
N-1
This step is defined as the value of the TDM_Offset of this MBMS business configuration, i.e. the value of b by selecting a unappropriated node.
This step can also for in the n layer corresponding at first or the FACH dispatching cycle of last scheduling, make the node configuration of residue continuous bandwidth maximum give this MBMS business.
If in the n layer, selected certain node configuration to give the MBMS business, then with this node identification for taking, and will be that all nodes of root and this node all are designated to the node between the binary tree root node and take with this node.
If a certain MBMS service ending then needs to discharge the TDM parameter combinations that this MBMS business takies, concrete release flow process comprises the steps: as shown in Figure 3
If do not occupied sign and distinguished by adding, then being released in this step: present node is added unoccupied sign by the node that occupies He do not occupied at the node of unappropriated TDM parameter combinations correspondence.If adopt alternate manner to distinguish whether occupying of node, the then also corresponding adjustment of dispose procedure is enumerated here no longer one by one.
When the resource allocation methods that adopts the embodiment of the invention to provide is MBMS business configuration TDM parameter combinations, combine the principle that guarantees residue continuous bandwidth maximum, therefore can improve bandwidth utilization, thereby improve utilization ratio of wireless resources.
A concrete example is as follows:
Setting the FACH bandwidth is 256k, i.e. t
f=256k; Possible MBMA service rate is 256k, 128k, 64k and 32k, then t
m(min)=32k.Can draw thus: t
f/ t
m(min)=8, adopt the described binary tree of step 101 to generate principle foundation binary tree as shown in Figure 3.
If the MBMS business of a 64k will be shared this FACH, then comprise for the process of this MBMS business configuration TDM parameter combinations:
According to t
f/ t
m=256/64=4 determines a=4, then selects node at the 3rd layer of binary tree;
According to (4,0), (4,2), (4,1), the operating position of the sequential search node of (4,3), in dispatching cycle the 1st, the 2nd, the 3rd and the 4th FACH of corresponding respectively four FACH of these four nodes dispatching cycle;
If node (4,1) uses, other node free time, promptly do not occupied, then selected the brotgher of node (4 of node (4,1), 3) this MBMS business is given in configuration, simultaneously the binary tree root node all is designated to this internodal node occupied, soon (1,0) and (2,1) being designated occupiedly, will be that all node identifications are about to (8 for occupied in the tree of root with this node, 3) and (8,7) be designated occupied.
Suppose to discharge the MBMS business that the TDM parameter combinations is configured to (4,1), then at first discharge node (4,1), discharging simultaneously with (4,1) is all child nodes of root, promptly discharges (8,1) and (8,5); If the brotgher of node (4,3) is occupied, then finish this release flow process; If the brotgher of node (4,3) is idle, then discharge the father node (2,1) of the two; With (2,1) is present node, continues above-mentioned releasing operation.
By above embodiment as seen, in the resource allocation method that the embodiment of the invention provides, when needs are given MBMS business configuration TDM parameter combinations, be used if be checked through the TDM parameter combinations of part configuration FACH bandwidth resources, select to make the TDM parameter combinations of residue continuous bandwidth maximum to dispose business in the TDM parameter combinations that then never is used to MBMS.Owing to when utilizing the embodiment of the invention, consider the principle that guarantees residue continuous bandwidth maximum for MBMS business configuration resource, therefore can improve the FACH bandwidth utilization to greatest extent, improve utilization ratio of wireless resources.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.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 (10)
1. a resource allocation method is characterized in that, comprising:
According to the bandwidth of forward access channel FACH ratio, be defined as the TDM cycle in the TDM parameter combinations of described MBMS business configuration with the service rate of the MBMS business that will share this FACH; Wherein, described each TDM parameter combinations comprises: TDM cycle and TDM skew;
If the situation that takies of the TDM parameter combinations of the TDM cycle correspondence that inspection is determined all unoccupied, then selects one of them TDM parameter combinations to dispose to described MBMS business; If there is part TDM parameter combinations occupied, then therefrom choose one unoccupied, and make the TDM parameter combinations of residue continuous bandwidth maximum dispose to described MBMS business.
2. the method for claim 1 is characterized in that, checks that the situation that takies of the TDM parameter combinations of the TDM cycle correspondence of determining is:
Dispatching sequence according to the FACH dispatching cycle of described TDM parameter combinations correspondence checks successively by after arriving first.
3. the method for claim 1 is characterized in that, one of them TDM parameter combinations of described selection disposes to described MBMS business and is:
From the TDM parameter combinations of described TDM cycle correspondence, select a configuration to give described MBMS business arbitrarily;
Perhaps, with correspondence at first or last FACH dispatching cycle, make the TDM parameter combinations of residue continuous bandwidth maximum dispose to described MBMS business.
4. the method for claim 1 is characterized in that, also comprises:
After described MBMS service ending, be released to the TDM parameter combinations of described MBMS business configuration.
5. as each described method of claim 1 to 4, it is characterized in that described TDM parameter combinations is to generate according to the bandwidth of described FACH and the service rate that will share all kinds of MBMS business of this FACH in advance; The span of the TDM skew in the TDM parameter combinations of each TDM cycle correspondence is for subtracting 1 more than or equal to the 0 TDM cycle smaller or equal to correspondence.
6. the method for claim 1, it is characterized in that, described TDM parameter combinations is in advance according to the bandwidth of described FACH and the minimum value that will share the service rate in all kinds of MBMS business of this FACH, generate node of the corresponding binary tree of each TDM parameter combinations according to the binary tree mode.
7. method as claimed in claim 6 is characterized in that, when adopting the binary tree mode to generate described TDM parameter combinations, the concrete steps of carrying out resource allocation comprise:
According to the bandwidth of described FACH ratio, be defined as the number of plies n at node place of the TDM parameter combinations correspondence of described MBMS business configuration with the service rate of the MBMS business that will share this FACH;
Check the situation that takies of each node in the n layer,, then from the n layer, select a node configuration to give described MBMS business if all unoccupied; Otherwise the unappropriated brotgher of node of choosing occupied node from the n layer disposes to described MBMS business;
Configuration is given the node of described MBMS business, is that all nodes of root and this node all are designated to the node between the described binary tree root node and take with this node.
8. method as claimed in claim 7 is characterized in that, describedly selects a node configuration to be for described MBMS business from the n layer:
From the n layer, choose a node configuration arbitrarily and give described MBMS business;
Perhaps with in the n layer corresponding at first or the FACH dispatching cycle of last scheduling, make the node configuration of residue continuous bandwidth maximum give described MBMs business.
9. method as claimed in claim 7 is characterized in that, the situation that takies of each node is in the described inspection n layer:
According to the dispatching sequence of the FACH dispatching cycle of each node correspondence, by earlier to after check the situation that takies of each node in the n layer successively.
10. method as claimed in claim 7 is characterized in that, this method also comprises:
After described MBMS service ending, discharge the present node that described MBMS business takies, reaching with this node is the node of root;
Whether the brotgher of node of judging this node is occupied, if occupied, process ends then; Otherwise, discharge the father node of this node;
With described father node is present node, adopts said method to carry out node and discharges.
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| CN112883239B (en) * | 2021-01-26 | 2023-07-18 | 北京升哲科技有限公司 | Resource allocation method and device, computer equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6819940B1 (en) * | 1999-09-13 | 2004-11-16 | Mitsubishi Denki Kabushiki Kaisha | Mobile communications system |
| CN1735231A (en) * | 2004-08-12 | 2006-02-15 | 华为技术有限公司 | Method for informing collocation parameter for bearing MBMS service |
| CN101047438A (en) * | 2007-03-27 | 2007-10-03 | 中兴通讯股份有限公司 | Method for transceiving MBMS data using reframe in TD-SCDMA |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6819940B1 (en) * | 1999-09-13 | 2004-11-16 | Mitsubishi Denki Kabushiki Kaisha | Mobile communications system |
| CN1735231A (en) * | 2004-08-12 | 2006-02-15 | 华为技术有限公司 | Method for informing collocation parameter for bearing MBMS service |
| CN101047438A (en) * | 2007-03-27 | 2007-10-03 | 中兴通讯股份有限公司 | Method for transceiving MBMS data using reframe in TD-SCDMA |
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