CN101242623B - Wireless resource managing method, wireless network controller and base station - Google Patents
Wireless resource managing method, wireless network controller and base station Download PDFInfo
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Abstract
The invention discloses a wireless resource management method, including steps of: allocating frequency point and time slot to marginal customer device in preference; scheduling user device on the access frequency point and time slot. The invention configures one or more marginal customer device with resource access preference. Because difference of resource selection sequence between marginal customer and central customer, there is no interference, resource waste problem caused by adoption of resource reservation is avoided. The invention ensures that marginal customer get access to resource, with consideration of system throughput. The invention also provides a wireless network controller and a base station device.
Description
Technical field
The present invention relates to the radio resource management techniques field, relate in particular to a kind of radio resource management method, radio network controller (Radio Network Controller, RNC) and base station (Node B).
Background technology
RRM (Radio Resource Management, RRM) target, be under band-limited condition, to be wireless user terminal (the User Equipment in the network, UE) provide the quality of service guarantee, its basic point of departure is under network traffic skewness, the situation of the characteristic of channel because of channel fading and interference fluctuations, flexible allocation and the dynamic available resources of adjusting wireless transmission part and network, at utmost improve the wireless frequency spectrum utilance, prevent network congestion and keep as far as possible little signaling traffic load.The research contents of RRM mainly contains: power control, channel allocation, scheduling, switching, access control, load control, QoS (Quality of Service, service quality) and adaptive coding and modulating etc. end to end.The RRM functional entity is positioned at RNC in the R99 version of WCDMA, and after the R5 version was released HSPA (high-speed packet access), in order to improve control response speed, the part correlation functional entity moved down in the base station.The present invention is that example is set forth from channel allocation and scheduling with HSPA.
HSPA comprises HSDPA (high speed downlink packet access) and HSUPA (high speed uplink packet access), adopted AMC (Adaptive Modulation and Coding, Adaptive Modulation and Coding) and Node B fast dispatch technology, usually good UE obtains the service of better quality to allow wireless environment, and then promotes the entire throughput of sub-district; And cell edge UE path loss is big, disturbed condition is complicated, under general scheduling situation, can only obtain lower data throughout, even may can not get service for a long time.But consider from the QoS angle of business, need to improve professional edges cover as far as possible, improve the communication quality of Cell Edge User.
In order to improve the edges cover of HSPA sub-district, common resource allocation, scheduling strategy have:
1) is the edge customer reserved resource, promptly reserves certain time slot or frequency, use for edge customer.
Though this mode can improve the throughput of edge customer, but be cost with the spectrum efficiency of sacrificing cell throughout and system.If the quantity of reserved resource is improper, can cause the waste of resource.
2) limit the number of users that inserts the sub-district, it is too much to avoid inserting the community user number, prevents that edge UE from can not get scheduling.
But if only rely on restricted cell user access number to improve user throughput, effect is not clearly, has reduced the capacity of system simultaneously; Because the restriction of dispatching method, the edge customer that channel condition is relatively poor can not have higher priority level all the time, thereby can not improve the throughput of edge customer preferably.
3) improve the throughput of edge customer by dispatching algorithm.
Dispatching algorithm is being controlled shared resource allocation, and for each sending time slots, it has determined serviced user, has determined the performance of this system to a great extent.
Take into account direct ratio justice (the Proportional-Fair Scheduler of fair and throughput as employing, PF), this algorithm is to transmit for a long time on the roughly fair basis of data throughout keeping the user, consider simultaneously to utilize the short-term channel situation of change to increase efficiency of transmission, it is that system obtains a kind of compromise of maximum throughput and fairness; Perhaps adopt round-robin scheduling (Round-Robin, RR), this algorithm calls each user circularly, promptly from the scheduling probability, all same probability of each user takies resource (time slot, power etc.), it is the most fair algorithm.
Improve edge scheduling probability by above-mentioned scheduling mode, can promote peripheral speed to a certain extent, but when the channel condition of edge customer is very poor, (switches preceding edge customer or be subjected to the serious edge customer of adjacent area interference), even obtain scheduling, also be difficult to guarantee the correct transmission data of high speed.
In sum, above-mentioned three kinds of modes can improve cell edge to a certain extent and cover, but but very poor with the throughput of sacrificing whole sub-district or communication quality be cost.
Summary of the invention
The invention provides a kind of method of RRM, taking into account on the basis of throughput of system, guarantee that Cell Edge User obtains the purpose of resource.
The present invention provides a kind of RNC simultaneously, and a kind of Node B.
For this reason, the embodiment of the invention adopts following technical scheme:
A kind of radio resource management method comprises step: give edge customer equipment with frequency or time slot priority allocation; The mode of described distribution is: judge the UE capability type, and be user equipment allocation frequency or time slot according to capability class; Wherein, the mode of described judgement UE capability type is: by the ability rating of user equipment to report, judge that user device type is: only support dominant frequency point to receive and dispatch the type A of data, only support transceive data on the frequency and support the type B of a plurality of frequencies simultaneously, or support the Type C of a plurality of frequency transceive data; For the Type C subscriber equipment, the frequency of random access resource abundance; Subscriber equipment to access frequency point or time slot is dispatched.
Describedly give edge customer equipment, comprising: dispose the priority that each frequency or time slot insert edge customer equipment frequency or time slot priority allocation; Frequency that priority is high or time slot allocation are given edge customer equipment.
Describedly give edge customer equipment, comprising: configuration frequency or time slot priority list frequency or time slot priority allocation; Determine that subscriber equipment is in cell edge or center, set edge customer equipment and central user equipment are chosen described tabulation with reverse order frequency or time slot; By said sequence is edge customer devices allocation frequency or time slot.
Described method also comprises: judge that whether described frequency or time slot access customer number order are more than or equal to first threshold value that presets, if choose next frequency or time slot successively.
Described method also comprises: the frequency or the time slot that are set to the edge customer devices allocation are different with adjacent subdistrict frequency point or time slot.
After definite subscriber equipment was Type C, described method also comprised: judge that it is edge or center that the Type C subscriber equipment is in subdistrict position, and set the edge customer equipment of Type C and central user equipment is chosen described tabulation with reverse order frequency.
Described method also comprises: when the access customer number order of type A or the selected frequency of type B subscriber equipment during more than or equal to first threshold value, whether to judge on this frequency access style C subscriber equipment; If the Type C user device configuration is different from the new frequency of above-mentioned frequency for this reason, and rejudge described frequency can access style A or type B subscriber equipment.
Described scheduling process is: by positional information, path loss information or the channel quality sign of user equipment to report, the subscriber equipment that the priority scheduling position is far away, path loss is big or channel quality is low; Perhaps, adopt the scheduling strategy of direct ratio justice, circulation or maximum signal to noise ratio that subscriber equipment is dispatched.
Described method also comprises: the resource allocation request type of utilizing subscriber equipment to send, determine that request inserts or the frequency adjustment for the user; If the user inserts, judge whether this sub-district access customer number order reaches to preset second threshold value; If refusal inserts.
A kind of radio network controller comprises that resource chooses the unit, is used for giving edge customer equipment with frequency or time slot priority allocation;
User type judging unit: by the ability rating of user equipment to report, judge that user device type is: only support dominant frequency point to receive and dispatch the type A of data, only support transceive data on the frequency and support the type B of a plurality of frequencies simultaneously, or support the Type C of a plurality of frequency transceive data;
Described resource is chosen the unit, know the judged result of described user type judging unit after, for the Type C subscriber equipment, select the frequency of resource abundance at random.
Described radio network controller also comprises: the priority dispensing unit is used to dispose the priority that each frequency or time slot insert edge customer equipment; Described resource is chosen frequency or the time slot that the unit is the edge customer devices allocation, is meant the high frequency or the time slot of priority of described priority dispensing unit configuration.
Described radio network controller also comprises: the unit is known in priority list and position; Described position knows that the unit determines that subscriber equipment is in edge or center; Described resource is chosen the unit and is set edge customer equipment and central user equipment are chosen described tabulation with reverse order frequency or time slot; Described resource is chosen frequency or the time slot that the unit is the edge customer devices allocation, is meant that by said sequence be selected frequency of edge customer equipment or time slot.
Described radio network controller also comprises: first threshold value is provided with the unit and chooses control unit; Described first threshold value is provided with the unit, for each frequency or time slot are provided with first threshold value; The described control unit of choosing judges that whether described resource choose the selected frequency in unit or time slot access customer number order more than or equal to first threshold value, if the control resource is chosen the unit and chosen next frequency or time slot successively.
Described radio network controller also comprises: adjacent cell monitoring unit is used to monitor the frequency or the time slot configuration situation of adjacent sub-district; Listing control unit, it is different with adjacent subdistrict frequency point or time slot that preferred frequency of edge customer or time slot are set.
Perhaps, described resource is chosen the unit, is used for also knowing from described position that the unit learns Type C subscriber equipment present position, sets edge and center type C subscriber equipment are chosen described tabulation with reverse order frequency or time slot.
Perhaps, the described control unit of choosing also is used at the access customer number order of determining type A or the selected frequency of type B subscriber equipment during more than or equal to first threshold value, whether to judge on this frequency access style C subscriber equipment; If, indicate described resource choose the unit for this reason the Type C user device configuration be different from the new frequency of above-mentioned frequency, and rejudge described frequency can access style A or type B subscriber equipment.
A kind of base station comprises resource selection unit and scheduling unit; Described resource selection unit is used for giving edge customer equipment with frequency or time slot priority allocation; Described scheduling unit is dispatched the subscriber equipment that inserts described frequency or time slot; Described scheduling unit comprises:
Inverse ratio equity dispatching subelement: by positional information, path loss information or the channel quality sign of user equipment to report, the subscriber equipment that the priority scheduling position is far away, path loss is big or channel quality is low;
Direct ratio equity dispatching subelement: adopt direct ratio fairness policy scheduling user's set;
Round-robin scheduling subelement: adopt the cyclic policy scheduling user's set;
Maximum signal to noise ratio scheduling sublayer unit: adopt maximum signal to noise ratio strategy scheduling user's set;
Scheduling strategy chooser unit: from inverse ratio equity dispatching subelement, direct ratio equity dispatching subelement, round-robin scheduling subelement, maximum signal to noise ratio scheduling sublayer unit, select a subelement that subscriber equipment is dispatched.
Described base station also comprises: the priority dispensing unit is used to dispose the priority that each frequency or time slot insert edge customer equipment; Described resource selection unit is the frequency or the time slot of edge customer devices allocation, is meant the high frequency or the time slot of priority of described priority dispensing unit configuration.
Described base station also comprises: priority list is known unit and position acquiring unit; Described priority list is known the unit, knows the priority list of each frequency or time slot; Described position acquiring unit determines that subscriber equipment is in edge or center; Described resource selection unit setting edge customer equipment and central user equipment are chosen the frequency or the time slot of described tabulation with reverse order; Described resource selection unit is the frequency or the time slot of edge customer devices allocation, is meant that by said sequence be selected frequency of edge customer equipment or time slot.
Described base station also comprises: number of users preset unit and choose control unit; Described number of users preset unit is for each frequency or time slot are provided with access customer number order maximum: first threshold value; Whether the described control unit of choosing judges selected frequency in described resource selection unit or time slot access customer number order more than or equal to described first threshold value, if, next frequency of control resource selection unit selection or time slot.
Technique effect for technique scheme is analyzed as follows:
Description of drawings
Go out to send from sub-district integral body (reserved resource, limit number of cells) with prior art and guarantee that edges cover is different, the embodiment of the invention is from Radio Resource (frequency/time slot) itself, guarantee that some resources preferentially insert edge customer, and when certain resource access customer number order reaches threshold value, can travel through next resource in proper order, guarantee dynamic allocation of resources.
Because edge customer and central user select the order of resource different,, on the basis of having taken into account throughput of system, guaranteed that edge customer can access resource so mutually noninterfere has been avoided the employing resource reservation and the wasting of resources problem that causes.
After the user inserts certain frequency/time slot, come dispatched users by Node B, the embodiment of the invention is not limited to existing dispatching algorithm, can preferentially call the user who is in cell edge, guarantees the throughput of edge customer.Preferably, preferentially insert edge customer by disposing certain or some frequencies, and these frequencies are different from the frequency of adjacent Cell Edge User, thereby effectively reduce the co-channel interference between the adjacent sub-district, guarantee the communication quality of edge customer.
Fig. 1 is that the inventive method embodiment one multifrequency point is distributed schematic diagram;
Fig. 2 is the inventive method embodiment one schematic diagram;
Fig. 3 is the inventive method embodiment one flow chart;
Fig. 4 is that the inventive method embodiment two adjacent subdistrict frequency points distribute schematic diagram;
Fig. 5 is the inventive method embodiment three flow charts;
Fig. 6 is the inventive method embodiment five flow charts;
Fig. 7 is RNC embodiment one structural representation of the present invention;
Fig. 8 is RNC embodiment two structural representations of the present invention;
Fig. 9 is RNC embodiment three structural representations of the present invention;
Figure 10 is embodiment one structural representation in base station of the present invention.
Embodiment
The embodiment of the invention disposes certain or some resources and preferentially inserts edge customer, and access customer number order threshold value is set for resource; When the resource of choosing for the user is saturated, the next resource of order assignment.
At first introduce the embodiment of the invention one:
The steps necessary of present embodiment is: give edge customer equipment with frequency or time slot priority allocation; Subscriber equipment to access frequency point or time slot is dispatched.
In order to guarantee that a part of frequency or time slot preferentially insert edge customer equipment, can adopt each frequency of configuration or time slot to insert the mode of the priority of edge customer equipment, so, priority allocation is given the frequency or the time slot of edge customer equipment, just is meant frequency or time slot that priority is high.
Perhaps, adopt the mode of configuration frequency or time slot priority list, determine that subscriber equipment is in after cell edge or the center, set edge customer equipment and central user equipment are chosen described tabulation with reverse order frequency or time slot; So, priority allocation is given the frequency or the time slot of edge customer equipment, is meant that by said sequence be selected frequency of edge customer equipment or time slot.
Allocation of radio resources that the embodiment of the invention relates to and dispatching method are applicable to the single-frequency dot system, for example time division duplex (Time Division Duplex, TDD) single-frequency dot system; Simultaneously, also be suitable for multiple frequency point system, as the TDD multiple frequency point system.For the former, Radio Resource mainly is meant time slot; And the latter mainly is meant frequency (carrier wave).The two there is no difference for enforcement of the present invention, below mainly sets forth with multifrequency point TDD system.
In 3-G (Generation Three mobile communication system), in order to reduce interference, improve power system capacity, the notion of multi-frequency-point community has been proposed, promptly a plurality of frequencies are distributed in each sub-district (sector) of being covered of Node B, and one of them be the dominant frequency point, and other are to assist frequency.In a sub-district, has only dominant frequency point configuration common signal channel.
Multi-frequency-point community is by slow dynamic channel allocation (Slow Dynamic Channel Allocation, SDCA), in RNC, keep a frequency priority list, when user's access or LCC (the congested adjustment of load) requirement adjustment resource, can select suitable frequency to insert according to priority list.The SDCA main task is to carry out the resource allocation of each minizone, variation according to service asymmetry in the sub-district, in each sub-district, distribute and adjust the resource of uplink downlink, the up-downgoing transmittability of time slot and the proportionate relationship of professional up-downgoing load are complementary, to obtain best spectrum efficiency.
With three frequency point cells is example, and its frequency point allocation is referring to shown in Figure 1, and wherein sub-district 1 is a dominant frequency with f1, and f2, f3 are frequently auxilliary; Sub-district 2 is a dominant frequency with f2, and f1, f3 are frequently auxilliary; Sub-district 3 is a dominant frequency with f3, and f1, f2 are frequently auxilliary.
Referring to Fig. 2, be the present embodiment schematic diagram.
At first, RNC configuration SDCA frequency priority list referring to table 1, is the priority list example of RNC configuration.
Table 1
| | Frequency | |
| 1? | f1? | |
| 2? | f2? | |
| 3? | f3? |
Edge customer and central user selective listing access frequency point reversed in order are set, the forward frequency in the selective listing (f1-〉f2-〉f3) of edge customer for example is set, and the frequency in the reverse selective listing of central user (f3-〉f2-〉f1).
And preferably too much in order to prevent certain frequency access customer number order, all there is a higher limit each frequency and each sub-district to the number of users that inserts, and are respectively: the first threshold value N
f, the second threshold value M
Cell
Secondly, UE reports the test report of information such as comprising signal strength signal intensity and quality, and RNC determines customer location in view of the above, selects SDCA priority list intermediate-frequeney point to insert then.
At last, Node B dispatches the user who inserts certain frequency.In order to guarantee that edge customer obtains scheduling, go up employing circulation even " inverse ratio justice " scheduling strategy at the preferential frequency (f1) that inserts edge customer; Also can be the same with other frequencies, adopt direct ratio justice or maximum signal to noise ratio (C/I) algorithm.
Circulation and direct ratio justice be by the agency of in front; Maximum signal to noise ratio when selecting transmission user, the CU resource transmission data that the selective channel condition is good.
Inverse ratio is fair opposite with the fair thinking of direct ratio, preferentially calls the relatively poor user of channel condition.Now be described below from HSUPA and HSDPA two aspects:
In HSUPA, the user reports the L of reflection position and path loss information for Node B
Metric, be defined as follows:
Wherein, l represents the path loss of signal from UE to Node B, L
MetricBig more, illustrate that UE is near more apart from this sub-district Node B.In order to guarantee that edge customer obtains scheduling, with 1/L
MetricAs the authority of weighing dispatched users, like this, edge customer preferentially obtains scheduling.
In HSDPA, can be according to the CQI value of the reflection channel quality of user feedback, the user that this value is low more, bad channel quality, dispatching priority height.
In order to make present embodiment more clear,, how present embodiment is carried out resource allocation and scheduling is described in detail below in conjunction with Fig. 3.
Step 301:UE sends resource allocation request;
Step 302:RNC resolving resource request for allocation is differentiated the resource allocation request type; The type of requests resource allocation can be that the user inserts this sub-district; Also can be because the customer location movement requirement is carried out frequency adjustment (carrier wave adjustment); If the user inserts execution in step 303; Otherwise, execution in step 304; Because the frequency adjustment does not increase the community user number, so do not carry out the judgement of step 303;
Step 303: judge that whether this sub-district access total number of users is more than or equal to the second threshold value M
CellIf,, forward step 314 to, otherwise, execution in step 304;
Step 304: judge customer location; Can whether surpass system intialization echo signal value by the signal measurements in the measurement report of UE,, determine that then this user is in marginal position, execution in step 305 if surpass; Otherwise be in the center, execution in step 310;
Step 305: forward choose the frequency in the SDCA priority list;
Step 306: judge that whether this frequency accessed user number is more than or equal to the first threshold value N
fIf,, execution in step 307; Otherwise, execution in step 309;
Step 307: travel through all frequencies? if forward step 314 to; Otherwise, execution in step 308;
Step 308: forward choose the next frequency in the SDCA priority list, execution in step 306 then;
Step 309: insert this frequency; And adopt suitable dispatching algorithm that the user is dispatched;
For edge customer, the scheduling strategy of preferred inverse ratio equity dispatching or circulation; For central user, preferred direct ratio justice or maximum signal to noise ratio scheduling strategy.
Step 310: the reverse frequency of choosing in the SDCA priority list;
Step 311: judge whether this frequency accessed user number reaches the first threshold value N
fIf,, execution in step 312; Otherwise, execution in step 309;
Step 312: travel through all frequencies? if forward step 314 to; Otherwise, execution in step 313;
Step 313: the reverse next frequency of choosing in the SDCA priority list, execution in step 311 then;
Step 314: access failure.
With prior art from sub-district integral body (reserved resource, the qualification number of cells) goes out to send to guarantee the edges cover difference, the embodiment of the invention is from resource (frequency/time slot) itself, guarantee that some resources preferentially insert edge customer, and another part resource preferentially inserts central user, and when certain resource access customer number order reaches threshold value, can travel through next resource in proper order, guarantee dynamic allocation of resources, because edge customer selects the order of resource different with central user, so mutually noninterfere, the wasting of resources problem of having avoided adopting resource reservation and having caused on the basis of having taken into account throughput of system, has guaranteed that edge customer can access resource; After the user inserts certain frequency/time slot, come dispatched users by Node B, the embodiment of the invention is not limited to existing dispatching algorithm, can preferentially call the user who is in cell edge, guarantees the throughput of edge customer.
Introduce the specific embodiment of the invention two below:
On the basis of embodiment one, present embodiment has increased the consideration to adjacent area interference, and in the frequency point setting in the SDCA priority list, the frequency that will be different from adjacent sub-district preferentially inserts edge customer.
In order effectively to reduce intrasystem interference, improve the throughput of whole system, RNC selects different frequencies for neighbor cell as far as possible and preferentially inserts edge customer.The dominant frequency point of neighbor cell is different often in the multiple frequency point system, therefore edge customer is preferentially inserted the dominant frequency point of this sub-district.Referring to Fig. 4, be multifrequency point resource allocation schematic diagram with reference to adjacent area interference, wherein, sub-district 1 is left dominant frequency f1 for edge (zone between solid line and the dotted line) user and is inserted, and f2, f3 are that center (dotted line interior zone) user inserts; Sub-district 2 is left dominant frequency f2 for edge customer and is inserted, and f1, f3 are that central user inserts; Sub-district 3 is left dominant frequency f3 for edge customer and is inserted, and f1, f2 are that central user inserts.When configuration SDCA priority list, dominant frequency point preferentially is set to the frequency that edge customer is chosen, assurance is not subjected to the interference of adjacent sub-district like this.
As seen, preferentially insert edge customer by disposing certain or some frequencies, and these frequencies are different from the frequency of adjacent Cell Edge User, thereby effectively reduce the co-channel interference between the adjacent sub-district, guarantee the communication quality of edge customer.
Introduce the specific embodiment of the invention three below:
For multiple frequency point system, on the basis of embodiment one or embodiment two, present embodiment has increased the judgement to the UE type, and dissimilar UE is carried out different resource allocations and scheduling strategy.
According to the UE capacity variance, UE can be divided into three types: type A:, only be supported on the dominant frequency point and receive and send messages according to the single-frequency point UE of 3GPP TD-SCDMArelease 4 standard developments; Type B: only be supported on the frequency and receive and send messages, support a plurality of frequency system simultaneously; Type C: receive and send messages when can support a plurality of frequency.
When the UE of type A is carried out resource distribution, consider that mainly dominant frequency point accessed user number does not reach upper limit N
F1(f1 is the dominant frequency point of multiple frequency point system), and the access total number of users does not reach upper limit M in the sub-district
CellDuring to the type B resource distribution, should consider step by step that each frequency accessed user number does not reach upper limit N
F1And N
F2... N
Fn(f2...fn is the auxilliary frequency of multiple frequency point system), and the access total number of users does not reach upper limit M in the sub-district
CellThe UE of Type C can distribute shared channel resources at a plurality of frequencies simultaneously according to the ability that self can support multifrequency point (comprising frequency points and frequency bandwidth), during to the Type C resource distribution, only need to consider that UE supports that the access total number of users does not reach upper limit M in the ability of multifrequency point and this sub-district
CellM
Cell, N
Fi(1≤i≤n) determine by the capacity of system, relevant with intrasystem frequency and code channel number, general M
Cell＞N
Fi
Referring to Fig. 5, be the flow chart of embodiment three, be all kinds of UE differentiating and processing are comprised with embodiment one difference:
Step 501:UE sends resource allocation request;
Step 502:RNC resolving resource request for allocation is differentiated the resource allocation request type; If the user inserts execution in step 503; Otherwise, execution in step 504;
Step 503: judge whether this sub-district access total number of users reaches the second threshold value M
CellIf,, forward step 522 to, otherwise, execution in step 504;
Step 504: judge the UE type, if type A forwards step 505 to; Type B forwards step 507 to; Type C forwards step 517 to;
Step 505: judge whether main carrier frequency accessed user number reaches N
F1If,, forward step 522 to; Otherwise, execution in step 506;
Step 506: insert the dominant frequency point, and adopt corresponding scheduling strategy that UE is dispatched;
Step 507: judge customer location; Determine that the user is in marginal position, execution in step 508; Otherwise be in the center, execution in step 514;
Step 508: forward choose the frequency in the SDCA priority list;
Step 509: judge whether this frequency accessed user number reaches the first threshold value N
fIf,, execution in step 510; Otherwise, execution in step 513;
Step 510: travel through all frequencies? if forward step 522 to; Otherwise, execution in step 511;
Step 511: forward choose the next frequency in the SDCA priority list, execution in step 509 then;
Step 512: insert this frequency; And adopt suitable dispatching algorithm that the user is dispatched;
Step 513: the reverse frequency of choosing in the SDCA priority list;
Step 514: judge whether this frequency accessed user number reaches the first threshold value N
fIf,, execution in step 515; Otherwise, execution in step 512;
Step 515: travel through all frequencies? if forward step 522 to; Otherwise, execution in step 516;
Step 516: the reverse next frequency of choosing in the SDCA priority list; Execution in step 514 then;
Step 517: the reverse frequency of choosing in the SDCA priority list;
Step 518: judge whether this frequency has idling-resource, if, execution in step 519; Otherwise, execution in step 520;
Step 519: insert this frequency; And adopt suitable dispatching algorithm that the user is dispatched;
Step 520: travel through all frequencies? if forward step 522 to; Otherwise, execution in step 521;
Step 521: the reverse next frequency of choosing in the SDCA priority list; Execution in step 518 then;
Generally speaking, for the UE of Type C, the frequency number that its is supported is provided with maximum upper limit, and each frequency is continuous, for example 1.6MHz at interval; In practical operation, distribute the frequency of its support in order successively for UE.
Step 522: access failure.
After the UE type ability of carrying out divided, because there is not the frequency restriction in the UE of Type C, its access rate was higher.Therefore when selecting access frequency point, do not consider the UE position, insert, can leave more resource to edge customer like this according to the reverse frequency of choosing of SDCA priority list.
Introduce the specific embodiment of the invention four below:
On the basis of embodiment three, if system resource is abundanter, also can whether determine specifically to be the order of its access frequency point according to the present position to the UE of Type C at cell edge, if the UE of Type C is in edge cell, then forward select the frequency in the SDCA priority list to insert; Otherwise the reverse frequency of choosing inserts, and the corresponding flow process of type B is similar among detailed process flow process and Fig. 5.By judging the Type C terminal location, can reduce the number of times that frequency is adjusted.
Introduce the specific embodiment of the invention five below:
On the basis of embodiment three or embodiment four, can under the situation of the frequency deficiency that type A and type B user insert, the Type C user on this frequency be removed, thereby be type A or type B reservation of resource.
Because there is not the frequency restriction in the UE of Type C, so when the frequency inadequate resource that the UE of type A or type B inserts, can judge the user who whether has Type C in this frequency, if have, the UE of Type C can be shifted out this frequency, thereby reduce this frequency access customer number order, for type A or type B are abdicated sufficient resources.
The UE that is in the edge with type B is an example at the frequency inadequate resource of its access, describes the UE that shifts out Type C, is the example of type B reservation of resource.Referring to Fig. 6, comprising:
Step 601: for the edge customer of type B is forward selected frequency in the SDCA priority list;
Step 602: whether this frequency accessed user number has reached the first threshold value N
fIf,, execution in step 603; Otherwise, execution in step 607;
Step 603: judge the UE that has Type C on this frequency? if, execution in step 604; Otherwise, execution in step 605
Step 604: the UE of Type C is removed from this frequency;
Remove Type C UE process just for this reason the UE of Type C redistribute the process of frequency in addition.
Step 605: travel through all frequencies? if change step 608 over to; Otherwise, execution in step 606;
Step 606: forward choose the next frequency of SDCA and insert, execution in step 602 then;
Step 607: insert this frequency; And adopt suitable dispatching algorithm that the user is dispatched;
Step 608: access failure.
Be not difficult to find out from above, after the UE of Type C is removed from frequency,, preferentially guarantee the resource allocation of edge customer for the enough resources of leaving of type B edge customer.
Be not difficult to find out that from top five embodiment according to user's request type, resource allocation is divided into user's access and frequency is adjusted two branches; After the user is carried out resource allocation, utilize suitable dispatching algorithm that subscriber equipment is dispatched.When inserting, the user disposes frequency by RNC; And user's scheduling is realized by NodeB.
Adjust the executive agent difference according to frequency, two kinds of implementations can be arranged: a kind of is to reconfigure by RNC, and another kind is that Node B dispatches voluntarily.The former has increased the signaling transmission course (channel is reshuffled) between RNC, Node B and the UE, and introduces certain time delay, but realizes more simple concerning Node B; And the latter does not need to adjust the user by the signaling of RNC, and reflection is very fast, but the scheduling that relies on Node B fully realizes, the complexity of scheduling strategy is slightly increased, and the mode application type B that dispatches voluntarily of Node B or the terminal of Type C.In practical operation, can select to carry out the frequency adjustment according to system situation by RNC or Node B.The main body that the preferred RNC of the embodiment of the invention adjusts as frequency.
Below respectively with RNC and Node B as carrying out the main body that frequency is adjusted, (RNC and Node B) sets forth to two kinds of equipment provided by the invention.
Referring to Fig. 7, radio network controller (RNC) structural representation that provides for the embodiment of the invention one, it comprises that also first threshold value is provided with unit 702, position and knows that unit 703, resource choose unit 704 and choose control unit 705 except that comprising frequency/time slot priority list 701.
Wherein, it is that core is formed that resource is chosen unit 704, finishes the frequency/time slot allocation to subscriber equipment under the cooperation of other unit.First threshold value is provided with unit 702, for each frequency/time slot is provided with access customer number order maximum: first threshold value; Unit 703 is known in the position, by the measurement report that subscriber equipment sends, determines that it is edge or center that subscriber equipment is in subdistrict position; Resource is chosen unit 704, knows that from described position the unit learns the subscriber equipment present position, sets edge customer equipment and central user equipment are chosen described tabulation with reverse order frequency/time slot; Choose control unit 705, judge that whether described resource choose the selected frequency in unit/time slot access customer number order more than or equal to described first threshold value, if the control resource is chosen next frequency/time slot that unit 704 is chosen tabulation successively.
For embodiment one, RNC also can include only resource and choose unit 704.Perhaps, RNC includes only resource and chooses unit 704 and a priority dispensing unit, the priority dispensing unit is used to dispose the priority of each frequency or time slot access edge customer equipment, resource is chosen unit 704 and is the frequency or the time slot of edge customer devices allocation, just is meant the highest frequency or the time slot of priority of priority dispensing unit configuration.Perhaps, RNC only comprises priority list 701, position and knows that unit 703 and resource choose unit 704.Is the optimum way of embodiment one for comprising that first threshold value is provided with unit 702 with the RNC that chooses control unit 705.
Referring to Fig. 8, the RNC structural representation that provides for the embodiment of the invention two.On the basis of Fig. 7, also comprise adjacent cell monitoring unit 706, be used to monitor the frequency/time slot configuration situation of adjacent sub-district; And listing control unit 707, it is different with adjacent subdistrict frequency point/time slot that the preferred frequency/time slot of edge customer is set in the tabulation.
Referring to Fig. 9, be the RNC structural representation of embodiment three.On the basis of Fig. 7 or Fig. 8, increased user type judging unit 708, it is by the ability rating of user equipment to report, judge that user device type is: only support dominant frequency point to receive and dispatch the type A of data, only support transceive data on the frequency and support the type B of a plurality of frequencies simultaneously, or support the Type C of a plurality of frequency transceive data; And this user type judging unit 708 sends to resource with judged result and chooses unit 704, carries out resource by it according to the result and chooses.
The result that resource is chosen the 704 pairs of user type judging units 708 in unit to be provided carries out difference utilization, can obtain different embodiment (embodiment three, embodiment four and embodiment five).In embodiment three, resource is chosen unit 704, knows the judged result of user type judging unit 708, for the Type C subscriber equipment, selects the frequency of resource abundance at random.And in embodiment four, resource is chosen unit 704 and is known that from the position unit 703 learns Type C subscriber equipment present position, and the Type C subscriber equipment of setting edge and center is chosen the frequency/time slot of tabulation with reverse order.In embodiment five, choose control unit 705, at the access customer number order of determining type A or the selected frequency of type B subscriber equipment during, choose unit 704 by resource and whether to judge on this frequency access style C subscriber equipment more than or equal to first threshold value; If, indexed resource choose unit 704 for this reason the Type C user device configuration be different from the new frequency of above-mentioned frequency, and rejudge this frequency can access style A or type B subscriber equipment.
The present invention also provides a kind of base station equipment, and referring to Figure 10, it comprises tabulating knows unit 1001, number of users preset unit 1002, position acquiring unit 1003, resource selection unit 1004, selection control unit 1005 and scheduling unit 1006.Wherein, resource selection unit 1004 and scheduling unit 1006 are that core is formed.
Tabulation is known and is known frequency/time slot priority list from RNC in unit 1001; Number of users preset unit 1002 is for each frequency/time slot is provided with access customer number order maximum: first threshold value; Position acquiring unit 1003 by the measurement report that subscriber equipment sends, determines that it is edge or center that subscriber equipment is in subdistrict position; The subscriber equipment present position is learnt from described position acquiring unit in resource selection unit 1004, sets edge customer equipment and central user equipment are chosen described tabulation with reverse order frequency/time slot; Select control unit 1005, whether judge resource selection unit 1004 selected frequencies/time slot access customer number order, if control resource selection unit 1004 is chosen the next frequency/time slot of tabulation successively more than or equal to described first threshold value; Scheduling unit 1006 is dispatched the subscriber equipment that inserts described frequency/time slot.
Figure 10 shows that the optimal way of the base station equipment that the embodiment of the invention one provides.Perhaps, the base station also can include only resource selection unit 1004.Perhaps, also can include only resource selection unit 1004 and a priority dispensing unit, the priority dispensing unit is used to dispose the priority of each frequency or time slot access edge customer equipment, resource selection unit 1004 is the frequency or the time slot of edge customer devices allocation, just is meant the highest frequency or the time slot of priority of priority dispensing unit configuration.Perhaps, the base station also can include only to tabulate and know unit 1001, position acquiring unit 1003, resource selection unit 1004 and scheduling unit 1006.
Preferably, scheduling unit 1006 comprises again: inverse ratio equity dispatching subelement, direct ratio equity dispatching subelement, round-robin scheduling subelement, maximum signal to noise ratio scheduling sublayer unit and scheduling strategy chooser unit.Inverse ratio equity dispatching subelement: by positional information, path loss information or the channel quality sign of user equipment to report, the subscriber equipment that the priority scheduling position is far away, path loss is big or channel quality is low; Direct ratio equity dispatching subelement: adopt direct ratio fairness policy scheduling user's set; Round-robin scheduling subelement: adopt the cyclic policy scheduling user's set; Maximum signal to noise ratio scheduling sublayer unit: adopt maximum signal to noise ratio strategy scheduling user's set; Scheduling strategy chooser unit: from inverse ratio equity dispatching subelement, direct ratio equity dispatching subelement, round-robin scheduling subelement, maximum signal to noise ratio scheduling sublayer unit, select a subelement that subscriber equipment is dispatched.
For base station equipment provided by the invention, can also increase consideration adjacent area interference, in the frequency point setting in the SDCA priority list, the frequency that will be different from adjacent sub-district preferentially inserts edge customer (embodiment two); Can also increase judgement, and all types of subscriber equipmenies are done different resource allocations and scheduling processing (embodiment three, four, five), be embodied in the inventive method embodiment and have a detailed description, not give unnecessary details at this to user type.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (20)
1. a radio resource management method is characterized in that, comprising:
Give edge customer equipment with frequency or time slot priority allocation; The mode of described distribution is: judge the UE capability type, and be user equipment allocation frequency or time slot according to capability class; Wherein, the mode of described judgement UE capability type is: by the ability rating of user equipment to report, judge that user device type is: only support dominant frequency point to receive and dispatch the type A of data, only support transceive data on the frequency and support the type B of a plurality of frequencies simultaneously, or support the Type C of a plurality of frequency transceive data; For the Type C subscriber equipment, the frequency of random access resource abundance;
Subscriber equipment to access frequency point or time slot is dispatched.
2. radio resource management method according to claim 1 is characterized in that, describedly gives edge customer equipment with frequency or time slot priority allocation, comprising:
Dispose the priority that each frequency or time slot insert edge customer equipment;
Frequency that priority is high or time slot allocation are given edge customer equipment.
3. radio resource management method according to claim 1 is characterized in that, describedly gives edge customer equipment with frequency or time slot priority allocation, comprising:
Configuration frequency or time slot priority list;
Determine that subscriber equipment is in cell edge or center, set edge customer equipment and central user equipment are chosen described tabulation with reverse order frequency or time slot;
By said sequence is edge customer devices allocation frequency or time slot.
4. radio resource management method according to claim 3 is characterized in that, also comprises:
Judge that whether described frequency or time slot access customer number order are more than or equal to first threshold value that presets, if choose next frequency or time slot successively.
5. radio resource management method according to claim 3 is characterized in that, also comprises:
The frequency or the time slot that are set to the edge customer devices allocation are different with adjacent subdistrict frequency point or time slot.
6. radio resource management method according to claim 3 is characterized in that, determines that subscriber equipment is after the Type C, also comprises:
Judge that it is edge or center that the Type C subscriber equipment is in subdistrict position, and set the edge customer equipment of Type C and central user equipment is chosen described tabulation with reverse order frequency.
7. radio resource management method according to claim 1 is characterized in that, also comprises:
When the access customer number order of type A or the selected frequency of type B subscriber equipment during, whether to judge on this frequency access style C subscriber equipment more than or equal to first threshold value;
If the Type C user device configuration is different from the new frequency of above-mentioned frequency for this reason, and rejudge described frequency can access style A or type B subscriber equipment.
8. according to any described radio resource management method in the claim 1 to 5, it is characterized in that described scheduling process is:
By positional information, path loss information or the channel quality sign of user equipment to report, the subscriber equipment that the priority scheduling position is far away, path loss is big or channel quality is low;
Perhaps,
Adopt the scheduling strategy of direct ratio justice, circulation or maximum signal to noise ratio that subscriber equipment is dispatched.
9. according to any described radio resource management method in the claim 1 to 5, it is characterized in that, also comprise:
The resource allocation request type of utilizing subscriber equipment to send determines that request inserts or the frequency adjustment for the user;
If the user inserts, judge whether this sub-district access customer number order reaches to preset second threshold value; If refusal inserts.
10. radio network controller, it is characterized in that comprising: resource is chosen the unit, is used for giving edge customer equipment with frequency or time slot priority allocation;
User type judging unit: by the ability rating of user equipment to report, judge that user device type is: only support dominant frequency point to receive and dispatch the type A of data, only support transceive data on the frequency and support the type B of a plurality of frequencies simultaneously, or support the Type C of a plurality of frequency transceive data;
Described resource is chosen the unit, know the judged result of described user type judging unit after, for the Type C subscriber equipment, select the frequency of resource abundance at random.
11. radio network controller according to claim 10 is characterized in that also comprising: the priority dispensing unit is used to dispose the priority that each frequency or time slot insert edge customer equipment;
Described resource is chosen frequency or the time slot that the unit is the edge customer devices allocation, is meant the high frequency or the time slot of priority of described priority dispensing unit configuration.
12. radio network controller according to claim 10 is characterized in that also comprising: the unit is known in priority list and position;
Described position knows that the unit determines that subscriber equipment is in edge or center;
Described resource is chosen the unit and is set edge customer equipment and central user equipment are chosen described tabulation with reverse order frequency or time slot; Described resource is chosen frequency or the time slot that the unit is the edge customer devices allocation, is meant that by said sequence be selected frequency of edge customer equipment or time slot.
13. radio network controller according to claim 12 is characterized in that also comprising: first threshold value is provided with the unit and chooses control unit;
Described first threshold value is provided with the unit, for each frequency or time slot are provided with first threshold value;
The described control unit of choosing judges that whether described resource choose the selected frequency in unit or time slot access customer number order more than or equal to first threshold value, if the control resource is chosen the unit and chosen next frequency or time slot successively.
14. radio network controller according to claim 12 is characterized in that also comprising:
Adjacent cell monitoring unit is used to monitor the frequency or the time slot configuration situation of adjacent sub-district;
Listing control unit, it is different with adjacent subdistrict frequency point or time slot that preferred frequency of edge customer or time slot are set.
15., it is characterized in that according to each described radio network controller in the claim 12 to 14:
Described resource is chosen the unit, is used for also knowing from described position that the unit learns Type C subscriber equipment present position, sets edge and center type C subscriber equipment are chosen described tabulation with reverse order frequency or time slot.
16. radio network controller according to claim 13 is characterized in that:
The described control unit of choosing also is used at the access customer number order of determining type A or the selected frequency of type B subscriber equipment during more than or equal to first threshold value, whether to judge on this frequency access style C subscriber equipment; If, indicate described resource choose the unit for this reason the Type C user device configuration be different from the new frequency of above-mentioned frequency, and rejudge described frequency can access style A or type B subscriber equipment.
17. a base station is characterized in that comprising: resource selection unit and scheduling unit;
Described resource selection unit is used for giving edge customer equipment with frequency or time slot priority allocation.
Described scheduling unit is dispatched the subscriber equipment that inserts described frequency or time slot; Described scheduling unit comprises:
Inverse ratio equity dispatching subelement: by positional information, path loss information or the channel quality sign of user equipment to report, the subscriber equipment that the priority scheduling position is far away, path loss is big or channel quality is low;
Direct ratio equity dispatching subelement: adopt direct ratio fairness policy scheduling user's set;
Round-robin scheduling subelement: adopt the cyclic policy scheduling user's set;
Maximum signal to noise ratio scheduling sublayer unit: adopt maximum signal to noise ratio strategy scheduling user's set;
Scheduling strategy chooser unit: from inverse ratio equity dispatching subelement, direct ratio equity dispatching subelement, round-robin scheduling subelement, maximum signal to noise ratio scheduling sublayer unit, select a subelement that subscriber equipment is dispatched.
18. base station according to claim 17 is characterized in that also comprising: the priority dispensing unit is used to dispose the priority that each frequency or time slot insert edge customer equipment;
Described resource selection unit is the frequency or the time slot of edge customer devices allocation, is meant the high frequency or the time slot of priority of described priority dispensing unit configuration.
19. base station according to claim 17 is characterized in that also comprising: priority list is known unit and position acquiring unit;
Priority list is known the unit, knows the priority list of each frequency or time slot;
Described position acquiring unit determines that subscriber equipment is in edge or center;
Described resource selection unit setting edge customer equipment and central user equipment are chosen the frequency or the time slot of described tabulation with reverse order; Described resource selection unit is the frequency or the time slot of edge customer devices allocation, is meant that by said sequence be selected frequency of edge customer equipment or time slot.
20. base station according to claim 19 is characterized in that also comprising: number of users preset unit and choose control unit;
Described number of users preset unit is for each frequency or time slot are provided with access customer number order maximum: first threshold value;
Whether the described control unit of choosing judges selected frequency in described resource selection unit or time slot access customer number order more than or equal to described first threshold value, if, next frequency of control resource selection unit selection or time slot.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101836492B (en) * | 2007-10-25 | 2014-02-05 | 爱立信电话股份有限公司 | Method of allocating radio resources |
| CN101784087A (en) * | 2009-01-16 | 2010-07-21 | 华为技术有限公司 | Method, device and system for reporting measurement report |
| CN102164379B (en) * | 2010-02-23 | 2015-06-10 | 中兴通讯股份有限公司 | Method and device for adjusting frequency |
| CN102281575B (en) * | 2010-06-11 | 2015-02-18 | 电信科学技术研究院 | Method for accessing according to sequence of slot time priority and wireless network controller |
| CN102469604B (en) * | 2010-11-12 | 2014-04-09 | 大唐移动通信设备有限公司 | Method and device for distributing resource |
| CN102573091A (en) * | 2010-12-28 | 2012-07-11 | 上海贝尔股份有限公司 | Scheduling method and scheduling device based on inter-cell interference in wireless communication system |
| CN102740358B (en) * | 2011-04-01 | 2015-04-01 | 中兴通讯股份有限公司 | Method and system for downlink inter-cell interference coordination |
| CN102186248B (en) * | 2011-05-13 | 2014-01-08 | 电信科学技术研究院 | Scheduling method and device used for interference coordination |
| CN103096446A (en) * | 2011-11-03 | 2013-05-08 | 上海贝尔股份有限公司 | Method and equipment for coordinating physical downlink control channel (PDCCH) power between communities |
| CN107734698B (en) * | 2017-11-29 | 2020-04-14 | 京信通信系统（中国）有限公司 | Resource allocation method, device and storage medium |
| CN107947826A (en) * | 2017-12-05 | 2018-04-20 | 鞍钢集团（鞍山）铁路运输设备制造有限公司 | A kind of railway dispatching method of calling |
| CN112637886B (en) * | 2019-09-24 | 2022-05-17 | 深圳市万普拉斯科技有限公司 | Communication resource sharing method and system for base station and terminal |
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